add compiled version for instant use

1 files changed, 55047 insertions, 0 deletions

diff --git a/bundle.js b/bundle.js
new file mode 100644
index 0000000..6937230
--- /dev/null
+++ b/bundle.js
@@ -0,0 +1,55047 @@
+(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+window.createGame = require('voxel-engine');
+window.highlight = require('voxel-highlight');
+window.player = require('voxel-player');
+window.voxel = require('voxel');
+window.fly = require('voxel-fly');
+window.walk = require('voxel-walk');
+window.skin = require('minecraft-skin');
+
+function defaultSetup(game, avatar) {
+    var makeFly = fly(game);
+    var target = game.controls.target();
+    game.flyer = makeFly(target);
+
+    // highlight blocks when you look at them, hold <Ctrl> for block placement
+    var blockPosPlace, blockPosErase;
+    var hl = game.highlighter = highlight(game, { color: 0xff0000 });
+    hl.on('highlight', function (voxelPos) { blockPosErase = voxelPos; });
+    hl.on('remove', function (voxelPos) { blockPosErase = null; });
+    hl.on('highlight-adjacent', function (voxelPos) { blockPosPlace = voxelPos; });
+    hl.on('remove-adjacent', function (voxelPos) { blockPosPlace = null; });
+
+    // block interaction stuff, uses highlight data
+    var currentMaterial = 1;
+
+    game.on('fire', function (target, state) {
+        var position = blockPosPlace;
+        if (position) {
+            game.createBlock(position, currentMaterial);
+        }
+        else {
+            position = blockPosErase;
+            if (position) game.setBlock(position, 0);
+        }
+    });
+    
+    game.on('tick', function() {
+        walk.render(target.playerSkin);
+        var vx = Math.abs(target.velocity.x);
+        var vz = Math.abs(target.velocity.z);
+        if (vx > 0.001 || vz > 0.001) walk.stopWalking();
+        else walk.startWalking();
+    });
+}
+window.initGame = function() {
+    function generator(x, y, z) {
+        return y === 1 ? 1 : 0;
+    }
+
+    var options = {
+        generate: generator,
+        chunkDistance: 2
+    };
+    window.game = createGame(options);
+    window.gameWorld = document.createElement('div');
+    window.game.appendTo(window.gameWorld);
+    window.createPlayer = window.player(window.game);
+    window.gamePlayer = createPlayer('greg.png');
+    window.gamePlayer.possess();
+    window.gamePlayer.yaw.position.set(2, 14, 4);
+    defaultSetup(window.game, window.gamePlayer);
+};
+
+module.exports = window.initGame;
+
+},{"minecraft-skin":2,"voxel":58,"voxel-engine":3,"voxel-fly":46,"voxel-highlight":51,"voxel-player":54,"voxel-walk":56}],2:[function(require,module,exports){
+var THREE
+
+module.exports = function(three, image, sizeRatio) {
+  return new Skin(three, image, sizeRatio)
+}
+
+function Skin(three, image, opts) {
+  if (opts) opts.image = opts.image || image
+  else opts = { image: image }
+  if (typeof image === 'object' && !(image instanceof HTMLElement)) opts = image
+  THREE = three // hack until three.js fixes multiple instantiation
+  this.sizeRatio = opts.sizeRatio || 8
+  this.scale = opts.scale || new three.Vector3(1, 1, 1)
+  this.fallbackImage = opts.fallbackImage || 'skin.png'
+  this.createCanvases()
+  this.charMaterial = this.getMaterial(this.skin, false)
+	this.charMaterialTrans = this.getMaterial(this.skin, true)
+  if (typeof opts.image === "string") this.fetchImage(opts.image)
+  if (opts.image instanceof HTMLElement) this.setImage(opts.image)
+  this.mesh = this.createPlayerObject()
+}
+
+Skin.prototype.createCanvases = function() {
+  this.skinBig = document.createElement('canvas')
+  this.skinBigContext = this.skinBig.getContext('2d')
+  this.skinBig.width = 64 * this.sizeRatio
+  this.skinBig.height = 32 * this.sizeRatio
+  
+  this.skin = document.createElement('canvas')
+  this.skinContext = this.skin.getContext('2d')
+  this.skin.width = 64
+  this.skin.height = 32
+}
+
+Skin.prototype.fetchImage = function(imageURL) {
+  var self = this
+  this.image = new Image()
+  this.image.crossOrigin = 'anonymous'
+  this.image.src = imageURL
+  this.image.onload = function() {
+    self.setImage(self.image)
+  }
+}
+
+Skin.prototype.setImage = function (skin) {
+  this.image = skin
+  this.skinContext.clearRect(0, 0, 64, 32);
+  
+  this.skinContext.drawImage(skin, 0, 0);
+  
+  var imgdata = this.skinContext.getImageData(0, 0, 64, 32);
+  var pixels = imgdata.data;
+
+  this.skinBigContext.clearRect(0, 0, this.skinBig.width, this.skinBig.height);
+  this.skinBigContext.save();
+  
+  var isOnecolor = true;
+  
+  var colorCheckAgainst = [40, 0];
+  var colorIndex = (colorCheckAgainst[0]+colorCheckAgainst[1]*64)*4;
+  
+  var isPixelDifferent = function (x, y) {
+    if(pixels[(x+y*64)*4+0] !== pixels[colorIndex+0] || pixels[(x+y*64)*4+1] !== pixels[colorIndex+1] || pixels[(x+y*64)*4+2] !== pixels[colorIndex+2] || pixels[(x+y*64)*4+3] !== pixels[colorIndex+3]) {
+      return true;
+    }
+    return false;
+  };
+  
+  // Check if helmet/hat is a solid color
+  // Bottom row
+  for(var i=32; i < 64; i+=1) {
+    for(var j=8; j < 16; j+=1) {
+      if(isPixelDifferent(i, j)) {
+        isOnecolor = false;
+        break;
+      }
+    }
+    if(!isOnecolor) {
+      break;
+    }
+  }
+  if(!isOnecolor) {
+    // Top row
+    for(var i=40; i < 56; i+=1) {
+      for(var j=0; j < 8; j+=1) {
+        if(isPixelDifferent(i, j)) {
+          isOnecolor = false;
+          break;
+        }
+      }
+      if(!isOnecolor) {
+        break;
+      }
+      
+    }
+  }
+  
+  for(var i=0; i < 64; i+=1) {
+    for(var j=0; j < 32; j+=1) {
+      if(isOnecolor && ((i >= 32 && i < 64 && j >= 8 && j < 16) || (i >= 40 && i < 56 && j >= 0 && j < 8))) {
+        pixels[(i+j*64)*4+3] = 0
+      }
+      this.skinBigContext.fillStyle = 'rgba('+pixels[(i+j*64)*4+0]+', '+pixels[(i+j*64)*4+1]+', '+pixels[(i+j*64)*4+2]+', '+pixels[(i+j*64)*4+3]/255+')';
+      this.skinBigContext.fillRect(i * this.sizeRatio, j * this.sizeRatio, this.sizeRatio, this.sizeRatio);
+    }
+  }
+  
+  this.skinBigContext.restore();
+  
+  this.skinContext.putImageData(imgdata, 0, 0);
+  
+  this.charMaterial.map.needsUpdate = true;
+  this.charMaterialTrans.map.needsUpdate = true;
+  
+};
+
+Skin.prototype.getMaterial = function(img, transparent) {
+  var texture    = new THREE.Texture(img);
+  texture.magFilter  = THREE.NearestFilter;
+  texture.minFilter  = THREE.NearestFilter;
+  texture.format    = transparent ? THREE.RGBAFormat : THREE.RGBFormat;
+  texture.needsUpdate  = true;
+  var material  = new THREE.MeshBasicMaterial({
+    map    : texture,
+    transparent  : transparent ? true : false
+  });
+  return material;
+}
+
+Skin.prototype.UVMap = function(mesh, face, x, y, w, h, rotateBy) {
+  if (!rotateBy) rotateBy = 0;
+  var uvs = mesh.geometry.faceVertexUvs[0][face];
+  var tileU = x;
+  var tileV = y;
+  var tileUvWidth = 1/64;
+  var tileUvHeight = 1/32;
+  uvs[ (0 + rotateBy) % 4 ].x = (tileU * tileUvWidth)
+  uvs[ (0 + rotateBy) % 4 ].y = 1 - (tileV * tileUvHeight)
+  uvs[ (1 + rotateBy) % 4 ].x = (tileU * tileUvWidth)
+  uvs[ (1 + rotateBy) % 4 ].y = 1 - (tileV * tileUvHeight + h * tileUvHeight)
+  uvs[ (2 + rotateBy) % 4 ].x = (tileU * tileUvWidth + w * tileUvWidth)
+  uvs[ (2 + rotateBy) % 4 ].y = 1 - (tileV * tileUvHeight + h * tileUvHeight)
+  uvs[ (3 + rotateBy) % 4 ].x = (tileU * tileUvWidth + w * tileUvWidth)
+  uvs[ (3 + rotateBy) % 4 ].y = 1 - (tileV * tileUvHeight)
+}
+
+Skin.prototype.cubeFromPlanes = function (size, mat) {
+  var cube = new THREE.Object3D();
+  var meshes = [];
+  for(var i=0; i < 6; i++) {
+    var mesh = new THREE.Mesh(new THREE.PlaneGeometry(size, size), mat);
+    mesh.doubleSided = true;
+    cube.add(mesh);
+    meshes.push(mesh);
+  }
+  // Front
+  meshes[0].rotation.x = Math.PI/2;
+  meshes[0].rotation.z = -Math.PI/2;
+  meshes[0].position.x = size/2;
+  
+  // Back
+  meshes[1].rotation.x = Math.PI/2;
+  meshes[1].rotation.z = Math.PI/2;
+  meshes[1].position.x = -size/2;
+  
+  // Top
+  meshes[2].position.y = size/2;
+  
+  // Bottom
+  meshes[3].rotation.y = Math.PI;
+  meshes[3].rotation.z = Math.PI;
+  meshes[3].position.y = -size/2;
+  
+  // Left
+  meshes[4].rotation.x = Math.PI/2;
+  meshes[4].position.z = size/2;
+  
+  // Right
+  meshes[5].rotation.x = -Math.PI/2;
+  meshes[5].rotation.y = Math.PI;
+  meshes[5].position.z = -size/2;
+  
+  return cube;
+}
+
+//exporting these meshes for manipulation:
+//leftLeg
+//rightLeg
+//leftArm
+//rightArm
+//body
+//head
+
+Skin.prototype.createPlayerObject = function(scene) {
+  var headgroup = new THREE.Object3D();
+  var upperbody = this.upperbody = new THREE.Object3D();
+  
+  // Left leg
+  var leftleggeo = new THREE.CubeGeometry(4, 12, 4);
+  for(var i=0; i < 8; i+=1) {
+    leftleggeo.vertices[i].y -= 6;
+  }
+  var leftleg = this.leftLeg = new THREE.Mesh(leftleggeo, this.charMaterial);
+  leftleg.position.z = -2;
+  leftleg.position.y = -6;
+  this.UVMap(leftleg, 0, 8, 20, -4, 12);
+  this.UVMap(leftleg, 1, 16, 20, -4, 12);
+  this.UVMap(leftleg, 2, 4, 16, 4, 4, 3);
+  this.UVMap(leftleg, 3, 8, 20, 4, -4, 1);
+  this.UVMap(leftleg, 4, 12, 20, -4, 12);
+  this.UVMap(leftleg, 5, 4, 20, -4, 12);
+
+  // Right leg
+  var rightleggeo = new THREE.CubeGeometry(4, 12, 4);
+  for(var i=0; i < 8; i+=1) {
+    rightleggeo.vertices[i].y -= 6;
+  }
+  var rightleg = this.rightLeg =new THREE.Mesh(rightleggeo, this.charMaterial);
+  rightleg.position.z = 2;
+  rightleg.position.y = -6;
+  this.UVMap(rightleg, 0, 4, 20, 4, 12);
+  this.UVMap(rightleg, 1, 12, 20, 4, 12);
+  this.UVMap(rightleg, 2, 8, 16, -4, 4, 3);
+  this.UVMap(rightleg, 3, 12, 20, -4, -4, 1);
+  this.UVMap(rightleg, 4, 0, 20, 4, 12);
+  this.UVMap(rightleg, 5, 8, 20, 4, 12);
+  
+  // Body
+  var bodygeo = new THREE.CubeGeometry(4, 12, 8);
+  var bodymesh = this.body = new THREE.Mesh(bodygeo, this.charMaterial);
+  this.UVMap(bodymesh, 0, 20, 20, 8, 12);
+  this.UVMap(bodymesh, 1, 32, 20, 8, 12);
+  this.UVMap(bodymesh, 2, 20, 16, 8, 4, 1);
+  this.UVMap(bodymesh, 3, 28, 16, 8, 4, 3);
+  this.UVMap(bodymesh, 4, 16, 20, 4, 12);
+  this.UVMap(bodymesh, 5, 28, 20, 4, 12);
+  upperbody.add(bodymesh);
+  
+  
+  // Left arm
+  var leftarmgeo = new THREE.CubeGeometry(4, 12, 4);
+  for(var i=0; i < 8; i+=1) {
+    leftarmgeo.vertices[i].y -= 4;
+  }
+  var leftarm = this.leftArm = new THREE.Mesh(leftarmgeo, this.charMaterial);
+  leftarm.position.z = -6;
+  leftarm.position.y = 4;
+  leftarm.rotation.x = Math.PI/32;
+  this.UVMap(leftarm, 0, 48, 20, -4, 12);
+  this.UVMap(leftarm, 1, 56, 20, -4, 12);
+  this.UVMap(leftarm, 2, 48, 16, -4, 4, 1);
+  this.UVMap(leftarm, 3, 52, 16, -4, 4, 3);
+  this.UVMap(leftarm, 4, 52, 20, -4, 12);
+  this.UVMap(leftarm, 5, 44, 20, -4, 12);
+  upperbody.add(leftarm);
+  
+  // Right arm
+  var rightarmgeo = new THREE.CubeGeometry(4, 12, 4);
+  for(var i=0; i < 8; i+=1) {
+    rightarmgeo.vertices[i].y -= 4;
+  }
+  var rightarm =this.rightArm = new THREE.Mesh(rightarmgeo, this.charMaterial);
+  rightarm.position.z = 6;
+  rightarm.position.y = 4;
+  rightarm.rotation.x = -Math.PI/32;
+  this.UVMap(rightarm, 0, 44, 20, 4, 12);
+  this.UVMap(rightarm, 1, 52, 20, 4, 12);
+  this.UVMap(rightarm, 2, 44, 16, 4, 4, 1);
+  this.UVMap(rightarm, 3, 48, 16, 4, 4, 3);
+  this.UVMap(rightarm, 4, 40, 20, 4, 12);
+  this.UVMap(rightarm, 5, 48, 20, 4, 12);
+  upperbody.add(rightarm);
+  
+  //Head
+  var headgeo = new THREE.CubeGeometry(8, 8, 8);
+  var headmesh = this.head = new THREE.Mesh(headgeo, this.charMaterial);
+  headmesh.position.y = 2;
+  this.UVMap(headmesh, 0, 8, 8, 8, 8);
+  this.UVMap(headmesh, 1, 24, 8, 8, 8);
+  
+  this.UVMap(headmesh, 2, 8, 0, 8, 8, 1);
+  this.UVMap(headmesh, 3, 16, 0, 8, 8, 3);
+  
+  this.UVMap(headmesh, 4, 0, 8, 8, 8);
+  this.UVMap(headmesh, 5, 16, 8, 8, 8);
+
+  var unrotatedHeadMesh = new THREE.Object3D();
+  unrotatedHeadMesh.rotation.y = Math.PI / 2;
+  unrotatedHeadMesh.add(headmesh);
+
+  headgroup.add(unrotatedHeadMesh);
+
+  var helmet = this.cubeFromPlanes(9, this.charMaterialTrans);
+  helmet.position.y = 2;
+  this.UVMap(helmet.children[0], 0, 32+8, 8, 8, 8);
+  this.UVMap(helmet.children[1], 0, 32+24, 8, 8, 8);
+  this.UVMap(helmet.children[2], 0, 32+8, 0, 8, 8, 1);
+  this.UVMap(helmet.children[3], 0, 32+16, 0, 8, 8, 3);
+  this.UVMap(helmet.children[4], 0, 32+0, 8, 8, 8);
+  this.UVMap(helmet.children[5], 0, 32+16, 8, 8, 8);
+  
+  headgroup.add(helmet);
+  
+  var ears = new THREE.Object3D();
+  
+  var eargeo = new THREE.CubeGeometry(1, (9/8)*6, (9/8)*6);
+  var leftear = new THREE.Mesh(eargeo, this.charMaterial);
+  var rightear = new THREE.Mesh(eargeo, this.charMaterial);
+  
+  leftear.position.y = 2+(9/8)*5;
+  rightear.position.y = 2+(9/8)*5;
+  leftear.position.z = -(9/8)*5;
+  rightear.position.z = (9/8)*5;
+  
+  // Right ear share same geometry, same uv-maps
+  
+  this.UVMap(leftear, 0, 25, 1, 6, 6); // Front side
+  this.UVMap(leftear, 1, 32, 1, 6, 6); // Back side
+  
+  this.UVMap(leftear, 2, 25, 0, 6, 1, 1); // Top edge
+  this.UVMap(leftear, 3, 31, 0, 6, 1, 1); // Bottom edge
+  
+  this.UVMap(leftear, 4, 24, 1, 1, 6); // Left edge
+  this.UVMap(leftear, 5, 31, 1, 1, 6); // Right edge
+  
+  ears.add(leftear);
+  ears.add(rightear);
+  
+  leftear.visible = rightear.visible = false;
+  
+  headgroup.add(ears);
+  headgroup.position.y = 8;
+  
+  var playerModel = this.playerModel = new THREE.Object3D();
+  
+  playerModel.add(leftleg);
+  playerModel.add(rightleg);
+  
+  playerModel.add(upperbody);
+  
+  var playerRotation = new THREE.Object3D();
+  playerRotation.rotation.y = Math.PI / 2
+  playerRotation.position.y = 12
+  playerRotation.add(playerModel)
+
+  var rotatedHead = new THREE.Object3D();
+  rotatedHead.rotation.y = -Math.PI/2;
+  rotatedHead.add(headgroup);
+
+  playerModel.add(rotatedHead);
+  playerModel.position.y = 6;
+  
+  var playerGroup = new THREE.Object3D();
+  playerGroup.cameraInside = new THREE.Object3D()
+  playerGroup.cameraOutside = new THREE.Object3D()
+
+  playerGroup.cameraInside.position.x = 0;
+  playerGroup.cameraInside.position.y = 2;
+  playerGroup.cameraInside.position.z = 0; 
+
+  playerGroup.head = headgroup
+  headgroup.add(playerGroup.cameraInside)
+  playerGroup.cameraInside.add(playerGroup.cameraOutside)
+
+  playerGroup.cameraOutside.position.z = 100
+
+  
+  playerGroup.add(playerRotation);
+  playerGroup.scale = this.scale
+  return playerGroup
+}
+},{}],3:[function(require,module,exports){
+(function (process){
+var voxel = require('voxel')
+var voxelMesh = require('voxel-mesh')
+var ray = require('voxel-raycast')
+var texture = require('voxel-texture')
+var control = require('voxel-control')
+var voxelView = require('voxel-view')
+var THREE = require('three')
+var Stats = require('./lib/stats')
+var Detector = require('./lib/detector')
+var inherits = require('inherits')
+var path = require('path')
+var EventEmitter = require('events').EventEmitter
+if (process.browser) var interact = require('interact')
+var requestAnimationFrame = require('raf')
+var collisions = require('collide-3d-tilemap')
+var aabb = require('aabb-3d')
+var glMatrix = require('gl-matrix')
+var vector = glMatrix.vec3
+var SpatialEventEmitter = require('spatial-events')
+var regionChange = require('voxel-region-change')
+var kb = require('kb-controls')
+var physical = require('voxel-physical')
+var pin = require('pin-it')
+var tic = require('tic')()
+
+module.exports = Game
+
+function Game(opts) {
+  if (!(this instanceof Game)) return new Game(opts)
+  var self = this
+  if (!opts) opts = {}
+  if (process.browser && this.notCapable(opts)) return
+  
+  // is this a client or a headless server
+  this.isClient = Boolean( (typeof opts.isClient !== 'undefined') ? opts.isClient : process.browser )
+
+  if (!('generateChunks' in opts)) opts.generateChunks = true
+  this.generateChunks = opts.generateChunks
+  this.setConfigurablePositions(opts)
+  this.configureChunkLoading(opts)
+  this.setDimensions(opts)
+  this.THREE = THREE
+  this.vector = vector
+  this.glMatrix = glMatrix
+  this.arrayType = opts.arrayType || Uint8Array
+  this.cubeSize = 1 // backwards compat
+  this.chunkSize = opts.chunkSize || 32
+  
+  // chunkDistance and removeDistance should not be set to the same thing
+  // as it causes lag when you go back and forth on a chunk boundary
+  this.chunkDistance = opts.chunkDistance || 2
+  this.removeDistance = opts.removeDistance || this.chunkDistance + 1
+  
+  this.skyColor = opts.skyColor || 0xBFD1E5
+  this.antialias = opts.antialias
+  this.playerHeight = opts.playerHeight || 1.62
+  this.meshType = opts.meshType || 'surfaceMesh'
+  this.mesher = opts.mesher || voxel.meshers.culled
+  this.materialType = opts.materialType || THREE.MeshLambertMaterial
+  this.materialParams = opts.materialParams || {}
+  this.items = []
+  this.voxels = voxel(this)
+  this.scene = new THREE.Scene()
+  this.view = opts.view || new voxelView(THREE, {
+    width: this.width,
+    height: this.height,
+    skyColor: this.skyColor,
+    antialias: this.antialias
+  })
+  this.view.bindToScene(this.scene)
+  this.camera = this.view.getCamera()
+  if (!opts.lightsDisabled) this.addLights(this.scene)
+  
+  this.fogScale = opts.fogScale || 32
+  if (!opts.fogDisabled) this.scene.fog = new THREE.Fog( this.skyColor, 0.00025, this.worldWidth() * this.fogScale )
+  
+  this.collideVoxels = collisions(
+    this.getBlock.bind(this),
+    1,
+    [Infinity, Infinity, Infinity],
+    [-Infinity, -Infinity, -Infinity]
+  )
+  
+  this.timer = this.initializeTimer((opts.tickFPS || 16))
+  this.paused = false
+
+  this.spatial = new SpatialEventEmitter
+  this.region = regionChange(this.spatial, aabb([0, 0, 0], [1, 1, 1]), this.chunkSize)
+  this.voxelRegion = regionChange(this.spatial, 1)
+  this.chunkRegion = regionChange(this.spatial, this.chunkSize)
+  this.asyncChunkGeneration = false
+
+  // contains chunks that has had an update this tick. Will be generated right before redrawing the frame
+  this.chunksNeedsUpdate = {}
+  // contains new chunks yet to be generated. Handled by game.loadPendingChunks
+  this.pendingChunks = []
+
+  this.materials = texture({
+    game: this,
+    texturePath: opts.texturePath || './textures/',
+    materialType: opts.materialType || THREE.MeshLambertMaterial,
+    materialParams: opts.materialParams || {},
+    materialFlatColor: opts.materialFlatColor === true
+  })
+
+  this.materialNames = opts.materials || [['grass', 'dirt', 'grass_dirt'], 'brick', 'dirt']
+  
+  self.chunkRegion.on('change', function(newChunk) {
+    self.removeFarChunks()
+  })
+
+  if (this.isClient) this.materials.load(this.materialNames)
+
+  if (this.generateChunks) this.handleChunkGeneration()
+
+  // client side only after this point
+  if (!this.isClient) return
+  
+  this.paused = true
+  this.initializeRendering(opts)
+ 
+  this.showAllChunks()
+
+  setTimeout(function() {
+    self.asyncChunkGeneration = 'asyncChunkGeneration' in opts ? opts.asyncChunkGeneration : true
+  }, 2000)
+
+  this.initializeControls(opts)
+}
+
+inherits(Game, EventEmitter)
+
+// # External API
+
+Game.prototype.voxelPosition = function(gamePosition) {
+  var _ = Math.floor
+  var p = gamePosition
+  var v = []
+  v[0] = _(p[0])
+  v[1] = _(p[1])
+  v[2] = _(p[2])
+  return v
+}
+
+Game.prototype.cameraPosition = function() {
+  return this.view.cameraPosition()
+}
+
+Game.prototype.cameraVector = function() {
+  return this.view.cameraVector()
+}
+
+Game.prototype.makePhysical = function(target, envelope, blocksCreation) {
+  var vel = this.terminalVelocity
+  envelope = envelope || [2/3, 1.5, 2/3]
+  var obj = physical(target, this.potentialCollisionSet(), envelope, {x: vel[0], y: vel[1], z: vel[2]})
+  obj.blocksCreation = !!blocksCreation
+  return obj
+}
+
+Game.prototype.addItem = function(item) {
+  if (!item.tick) {
+    var newItem = physical(
+      item.mesh,
+      this.potentialCollisionSet(),
+      [item.size, item.size, item.size]
+    )
+    
+    if (item.velocity) {
+      newItem.velocity.copy(item.velocity)
+      newItem.subjectTo(this.gravity)
+    }
+    
+    newItem.repr = function() { return 'debris' }
+    newItem.mesh = item.mesh
+    newItem.blocksCreation = item.blocksCreation
+    
+    item = newItem
+  }
+  
+  this.items.push(item)
+  if (item.mesh) this.scene.add(item.mesh)
+  return this.items[this.items.length - 1]
+}
+
+Game.prototype.removeItem = function(item) {
+  var ix = this.items.indexOf(item)
+  if (ix < 0) return
+  this.items.splice(ix, 1)
+  if (item.mesh) this.scene.remove(item.mesh)
+}
+
+// only intersects voxels, not items (for now)
+Game.prototype.raycast = // backwards compat
+Game.prototype.raycastVoxels = function(start, direction, maxDistance, epilson) {
+  if (!start) return this.raycastVoxels(this.cameraPosition(), this.cameraVector(), 10)
+  
+  var hitNormal = [0, 0, 0]
+  var hitPosition = [0, 0, 0]
+  var cp = start || this.cameraPosition()
+  var cv = direction || this.cameraVector()
+  var hitBlock = ray(this, cp, cv, maxDistance || 10.0, hitPosition, hitNormal, epilson || this.epilson)
+  if (hitBlock <= 0) return false
+  var adjacentPosition = [0, 0, 0]
+  var voxelPosition = this.voxelPosition(hitPosition)
+  vector.add(adjacentPosition, voxelPosition, hitNormal)
+  
+  return {
+    position: hitPosition,
+    voxel: voxelPosition,
+    direction: direction,
+    value: hitBlock,
+    normal: hitNormal,
+    adjacent: adjacentPosition
+  }
+}
+
+Game.prototype.canCreateBlock = function(pos) {
+  pos = this.parseVectorArguments(arguments)
+  var floored = pos.map(function(i) { return Math.floor(i) })
+  var bbox = aabb(floored, [1, 1, 1])
+  
+  for (var i = 0, len = this.items.length; i < len; ++i) {
+    var item = this.items[i]
+    var itemInTheWay = item.blocksCreation && item.aabb && bbox.intersects(item.aabb())
+    if (itemInTheWay) return false
+  }
+
+  return true
+}
+
+Game.prototype.createBlock = function(pos, val) {
+  if (typeof val === 'string') val = this.materials.find(val)
+  if (!this.canCreateBlock(pos)) return false
+  this.setBlock(pos, val)
+  return true
+}
+
+Game.prototype.setBlock = function(pos, val) {
+  if (typeof val === 'string') val = this.materials.find(val)
+  var old = this.voxels.voxelAtPosition(pos, val)
+  var c = this.voxels.chunkAtPosition(pos)
+  var chunk = this.voxels.chunks[c.join('|')]
+  if (!chunk) return// todo - does self.emit('missingChunk', c.join('|')) make sense here?
+  this.addChunkToNextUpdate(chunk)
+  this.spatial.emit('change-block', pos, old, val)
+  this.emit('setBlock', pos, val, old)
+}
+
+Game.prototype.getBlock = function(pos) {
+  pos = this.parseVectorArguments(arguments)
+  return this.voxels.voxelAtPosition(pos)
+}
+
+Game.prototype.blockPosition = function(pos) {
+  pos = this.parseVectorArguments(arguments)
+  var ox = Math.floor(pos[0])
+  var oy = Math.floor(pos[1])
+  var oz = Math.floor(pos[2])
+  return [ox, oy, oz]
+}
+
+Game.prototype.blocks = function(low, high, iterator) {
+  var l = low, h = high
+  var d = [ h[0]-l[0], h[1]-l[1], h[2]-l[2] ]
+  if (!iterator) var voxels = new this.arrayType(d[0]*d[1]*d[2])
+  var i = 0
+  for(var z=l[2]; z<h[2]; ++z)
+  for(var y=l[1]; y<h[1]; ++y)
+  for(var x=l[0]; x<h[0]; ++x, ++i) {
+    if (iterator) iterator(x, y, z, i)
+    else voxels[i] = this.voxels.voxelAtPosition([x, y, z])
+  }
+  if (!iterator) return {voxels: voxels, dims: d}
+}
+
+// backwards compat
+Game.prototype.createAdjacent = function(hit, val) {
+  this.createBlock(hit.adjacent, val)
+}
+
+Game.prototype.appendTo = function (element) {
+  this.view.appendTo(element)
+}
+
+// # Defaults/options parsing
+
+Game.prototype.gravity = [0, -0.0000036, 0]
+Game.prototype.friction = 0.3
+Game.prototype.epilson = 1e-8
+Game.prototype.terminalVelocity = [0.9, 0.1, 0.9]
+
+Game.prototype.defaultButtons = {
+  'W': 'forward'
+, 'A': 'left'
+, 'S': 'backward'
+, 'D': 'right'
+, '<up>': 'forward'
+, '<left>': 'left'
+, '<down>': 'backward'
+, '<right>': 'right'
+, '<mouse 1>': 'fire'
+, '<mouse 3>': 'firealt'
+, '<space>': 'jump'
+, '<shift>': 'crouch'
+, '<control>': 'alt'
+}
+
+// used in methods that have identity function(pos) {}
+Game.prototype.parseVectorArguments = function(args) {
+  if (!args) return false
+  if (args[0] instanceof Array) return args[0]
+  return [args[0], args[1], args[2]]
+}
+
+Game.prototype.setConfigurablePositions = function(opts) {
+  var sp = opts.startingPosition
+  this.startingPosition = sp || [35, 1024, 35]
+  var wo = opts.worldOrigin
+  this.worldOrigin = wo || [0, 0, 0]
+}
+
+Game.prototype.setDimensions = function(opts) {
+  if (opts.container) this.container = opts.container
+  if (opts.container && opts.container.clientHeight) {
+    this.height = opts.container.clientHeight
+  } else {
+    this.height = typeof window === "undefined" ? 1 : window.innerHeight
+  }
+  if (opts.container && opts.container.clientWidth) {
+    this.width = opts.container.clientWidth
+  } else {
+    this.width = typeof window === "undefined" ? 1 : window.innerWidth
+  }
+}
+
+Game.prototype.notCapable = function(opts) {
+  var self = this
+  if( !Detector().webgl ) {
+    this.view = {
+      appendTo: function(el) {
+        el.appendChild(self.notCapableMessage())
+      }
+    }
+    return true
+  }
+  return false
+}
+
+Game.prototype.notCapableMessage = function() {
+  var wrapper = document.createElement('div')
+  wrapper.className = "errorMessage"
+  var a = document.createElement('a')
+  a.title = "You need WebGL and Pointer Lock (Chrome 23/Firefox 14) to play this game. Click here for more information."
+  a.innerHTML = a.title
+  a.href = "http://get.webgl.org"
+  wrapper.appendChild(a)
+  return wrapper
+}
+
+Game.prototype.onWindowResize = function() {
+  var width = window.innerWidth
+  var height = window.innerHeight
+  if (this.container) {
+    width = this.container.clientWidth
+    height = this.container.clientHeight
+  }
+  this.view.resizeWindow(width, height)
+}
+
+// # Physics/collision related methods
+
+Game.prototype.control = function(target) {
+  this.controlling = target
+  return this.controls.target(target)
+}
+
+Game.prototype.potentialCollisionSet = function() {
+  return [{ collide: this.collideTerrain.bind(this) }]
+}
+
+/**
+ * Get the position of the player under control.
+ * If there is no player under control, return
+ * current position of the game's camera.
+ *
+ * @return {Array} an [x, y, z] tuple
+ */
+
+Game.prototype.playerPosition = function() {
+  var target = this.controls.target()
+  var position = target
+    ? target.avatar.position
+    : this.camera.localToWorld(this.camera.position.clone())
+  return [position.x, position.y, position.z]
+}
+
+Game.prototype.playerAABB = function(position) {
+  var pos = position || this.playerPosition()
+  var lower = []
+  var upper = [1/2, this.playerHeight, 1/2]
+  var playerBottom = [1/4, this.playerHeight, 1/4]
+  vector.subtract(lower, pos, playerBottom)
+  var bbox = aabb(lower, upper)
+  return bbox
+}
+
+Game.prototype.collideTerrain = function(other, bbox, vec, resting) {
+  var self = this
+  var axes = ['x', 'y', 'z']
+  var vec3 = [vec.x, vec.y, vec.z]
+  this.collideVoxels(bbox, vec3, function hit(axis, tile, coords, dir, edge) {
+    if (!tile) return
+    if (Math.abs(vec3[axis]) < Math.abs(edge)) return
+    vec3[axis] = vec[axes[axis]] = edge
+    other.acceleration[axes[axis]] = 0
+    resting[axes[axis]] = dir
+    other.friction[axes[(axis + 1) % 3]] = other.friction[axes[(axis + 2) % 3]] = axis === 1 ? self.friction  : 1
+    return true
+  })
+}
+
+// # Three.js specific methods
+
+Game.prototype.addStats = function() {
+  stats = new Stats()
+  stats.domElement.style.position  = 'absolute'
+  stats.domElement.style.bottom  = '0px'
+  document.body.appendChild( stats.domElement )
+}
+
+Game.prototype.addLights = function(scene) {
+  var ambientLight, directionalLight
+  ambientLight = new THREE.AmbientLight(0xcccccc)
+  scene.add(ambientLight)
+  var light	= new THREE.DirectionalLight( 0xffffff , 1)
+  light.position.set( 1, 1, 0.5 ).normalize()
+  scene.add( light )
+}
+
+// # Chunk related methods
+
+Game.prototype.configureChunkLoading = function(opts) {
+  var self = this
+  if (!opts.generateChunks) return
+  if (!opts.generate) {
+    this.generate = function(x,y,z) {
+      return x*x+y*y+z*z <= 15*15 ? 1 : 0 // sphere world
+    }
+  } else {
+    this.generate = opts.generate
+  }
+  if (opts.generateVoxelChunk) {
+    this.generateVoxelChunk = opts.generateVoxelChunk
+  } else {
+    this.generateVoxelChunk = function(low, high) {
+      return voxel.generate(low, high, self.generate, self)
+    }
+  }
+}
+
+Game.prototype.worldWidth = function() {
+  return this.chunkSize * 2 * this.chunkDistance
+}
+
+Game.prototype.chunkToWorld = function(pos) {
+  return [
+    pos[0] * this.chunkSize,
+    pos[1] * this.chunkSize,
+    pos[2] * this.chunkSize
+  ]
+}
+
+Game.prototype.removeFarChunks = function(playerPosition) {
+  var self = this
+  playerPosition = playerPosition || this.playerPosition()
+  var nearbyChunks = this.voxels.nearbyChunks(playerPosition, this.removeDistance).map(function(chunkPos) {
+    return chunkPos.join('|')
+  })
+  Object.keys(self.voxels.chunks).map(function(chunkIndex) {
+    if (nearbyChunks.indexOf(chunkIndex) > -1) return
+    var chunk = self.voxels.chunks[chunkIndex]
+    var mesh = self.voxels.meshes[chunkIndex]
+    var pendingIndex = self.pendingChunks.indexOf(chunkIndex)
+    if (pendingIndex !== -1) self.pendingChunks.splice(pendingIndex, 1)
+    if (!chunk) return
+    var chunkPosition = chunk.position
+    if (mesh) {
+      if (mesh.surfaceMesh) {
+        self.scene.remove(mesh.surfaceMesh)
+        mesh.surfaceMesh.geometry.dispose()
+      }
+      if (mesh.wireMesh) {
+        mesh.wireMesh.geometry.dispose()
+        self.scene.remove(mesh.wireMesh)
+      }
+      delete mesh.data
+      delete mesh.geometry
+      delete mesh.meshed
+      delete mesh.surfaceMesh
+      delete mesh.wireMesh
+    }
+    delete self.voxels.chunks[chunkIndex]
+    self.emit('removeChunk', chunkPosition)
+  })
+  self.voxels.requestMissingChunks(playerPosition)
+}
+
+Game.prototype.addChunkToNextUpdate = function(chunk) {
+  this.chunksNeedsUpdate[chunk.position.join('|')] = chunk
+}
+
+Game.prototype.updateDirtyChunks = function() {
+  var self = this
+  Object.keys(this.chunksNeedsUpdate).forEach(function showChunkAtIndex(chunkIndex) {
+    var chunk = self.chunksNeedsUpdate[chunkIndex]
+    self.emit('dirtyChunkUpdate', chunk)
+    self.showChunk(chunk)
+  })
+  this.chunksNeedsUpdate = {}
+}
+
+Game.prototype.loadPendingChunks = function(count) {
+  var pendingChunks = this.pendingChunks
+
+  if (!this.asyncChunkGeneration) {
+    count = pendingChunks.length
+  } else {
+    count = count || (pendingChunks.length * 0.1)
+    count = Math.max(1, Math.min(count, pendingChunks.length))
+  }
+
+  for (var i = 0; i < count; i += 1) {
+    var chunkPos = pendingChunks[i].split('|')
+    var chunk = this.voxels.generateChunk(chunkPos[0]|0, chunkPos[1]|0, chunkPos[2]|0)
+
+    if (this.isClient) this.showChunk(chunk)
+  }
+
+  if (count) pendingChunks.splice(0, count)
+}
+
+Game.prototype.getChunkAtPosition = function(pos) {
+  var chunkID = this.voxels.chunkAtPosition(pos).join('|')
+  var chunk = this.voxels.chunks[chunkID]
+  return chunk
+}
+
+Game.prototype.showAllChunks = function() {
+  for (var chunkIndex in this.voxels.chunks) {
+    this.showChunk(this.voxels.chunks[chunkIndex])
+  }
+}
+
+Game.prototype.showChunk = function(chunk) {
+  var chunkIndex = chunk.position.join('|')
+  var bounds = this.voxels.getBounds.apply(this.voxels, chunk.position)
+  var scale = new THREE.Vector3(1, 1, 1)
+  var mesh = voxelMesh(chunk, this.mesher, scale, this.THREE)
+  this.voxels.chunks[chunkIndex] = chunk
+  if (this.voxels.meshes[chunkIndex]) {
+    if (this.voxels.meshes[chunkIndex].surfaceMesh) this.scene.remove(this.voxels.meshes[chunkIndex].surfaceMesh)
+    if (this.voxels.meshes[chunkIndex].wireMesh) this.scene.remove(this.voxels.meshes[chunkIndex].wireMesh)
+  }
+  this.voxels.meshes[chunkIndex] = mesh
+  if (this.isClient) {
+    if (this.meshType === 'wireMesh') mesh.createWireMesh()
+    else mesh.createSurfaceMesh(this.materials.material)
+    this.materials.paint(mesh)
+  }
+  mesh.setPosition(bounds[0][0], bounds[0][1], bounds[0][2])
+  mesh.addToScene(this.scene)
+  this.emit('renderChunk', chunk)
+  return mesh
+}
+
+// # Debugging methods
+
+Game.prototype.addMarker = function(position) {
+  var geometry = new THREE.SphereGeometry( 0.1, 10, 10 )
+  var material = new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.FlatShading } )
+  var mesh = new THREE.Mesh( geometry, material )
+  mesh.position.copy(position)
+  this.scene.add(mesh)
+}
+
+Game.prototype.addAABBMarker = function(aabb, color) {
+  var geometry = new THREE.CubeGeometry(aabb.width(), aabb.height(), aabb.depth())
+  var material = new THREE.MeshBasicMaterial({ color: color || 0xffffff, wireframe: true, transparent: true, opacity: 0.5, side: THREE.DoubleSide })
+  var mesh = new THREE.Mesh(geometry, material)
+  mesh.position.set(aabb.x0() + aabb.width() / 2, aabb.y0() + aabb.height() / 2, aabb.z0() + aabb.depth() / 2)
+  this.scene.add(mesh)
+  return mesh
+}
+
+Game.prototype.addVoxelMarker = function(x, y, z, color) {
+  var bbox = aabb([x, y, z], [1, 1, 1])
+  return this.addAABBMarker(bbox, color)
+}
+
+Game.prototype.pin = pin
+
+// # Misc internal methods
+
+Game.prototype.onControlChange = function(gained, stream) {
+  this.paused = false
+
+  if (!gained && !this.optout) {
+    this.buttons.disable()
+    return
+  }
+
+  this.buttons.enable()
+  stream.pipe(this.controls.createWriteRotationStream())
+}
+
+Game.prototype.onControlOptOut = function() {
+  this.optout = true
+}
+
+Game.prototype.onFire = function(state) {
+  this.emit('fire', this.controlling, state)
+}
+
+Game.prototype.setInterval = tic.interval.bind(tic)
+Game.prototype.setTimeout = tic.timeout.bind(tic)
+
+Game.prototype.tick = function(delta) {
+  for(var i = 0, len = this.items.length; i < len; ++i) {
+    this.items[i].tick(delta)
+  }
+  
+  if (this.materials) this.materials.tick(delta)
+
+  if (this.pendingChunks.length) this.loadPendingChunks()
+  if (Object.keys(this.chunksNeedsUpdate).length > 0) this.updateDirtyChunks()
+  
+  tic.tick(delta)
+
+  this.emit('tick', delta)
+  
+  if (!this.controls) return
+  var playerPos = this.playerPosition()
+  this.spatial.emit('position', playerPos, playerPos)
+}
+
+Game.prototype.render = function(delta) {
+  this.view.render(this.scene)
+}
+
+Game.prototype.initializeTimer = function(rate) {
+  var self = this
+  var accum = 0
+  var now = 0
+  var last = null
+  var dt = 0
+  var wholeTick
+  
+  self.frameUpdated = true
+  self.interval = setInterval(timer, 0)
+  return self.interval
+  
+  function timer() {
+    if (self.paused) {
+      last = Date.now()
+      accum = 0
+      return
+    }
+    now = Date.now()
+    dt = now - (last || now)
+    last = now
+    accum += dt
+    if (accum < rate) return
+    wholeTick = ((accum / rate)|0)
+    if (wholeTick <= 0) return
+    wholeTick *= rate
+    
+    self.tick(wholeTick)
+    accum -= wholeTick
+    
+    self.frameUpdated = true
+  }
+}
+
+Game.prototype.initializeRendering = function(opts) {
+  var self = this
+
+  if (!opts.statsDisabled) self.addStats()
+
+  window.addEventListener('resize', self.onWindowResize.bind(self), false)
+
+  requestAnimationFrame(window).on('data', function(dt) {
+    self.emit('prerender', dt)
+    self.render(dt)
+    self.emit('postrender', dt)
+  })
+  if (typeof stats !== 'undefined') {
+    self.on('postrender', function() {
+      stats.update()
+    })
+  }
+}
+
+Game.prototype.initializeControls = function(opts) {
+  // player control
+  this.keybindings = opts.keybindings || this.defaultButtons
+  this.buttons = kb(document.body, this.keybindings)
+  this.buttons.disable()
+  this.optout = false
+  this.interact = interact(opts.interactElement || this.view.element, opts.interactMouseDrag)
+  this.interact
+      .on('attain', this.onControlChange.bind(this, true))
+      .on('release', this.onControlChange.bind(this, false))
+      .on('opt-out', this.onControlOptOut.bind(this))
+  this.hookupControls(this.buttons, opts)
+}
+
+Game.prototype.hookupControls = function(buttons, opts) {
+  opts = opts || {}
+  opts.controls = opts.controls || {}
+  opts.controls.onfire = this.onFire.bind(this)
+  this.controls = control(buttons, opts.controls)
+  this.items.push(this.controls)
+  this.controlling = null
+}
+
+Game.prototype.handleChunkGeneration = function() {
+  var self = this
+  this.voxels.on('missingChunk', function(chunkPos) {
+    self.pendingChunks.push(chunkPos.join('|'))
+  })
+  this.voxels.requestMissingChunks(this.worldOrigin)
+  this.loadPendingChunks(this.pendingChunks.length)
+}
+
+// teardown methods
+Game.prototype.destroy = function() {
+  clearInterval(this.timer)
+}
+
+}).call(this,require('_process'))
+},{"./lib/detector":4,"./lib/stats":5,"_process":74,"aabb-3d":6,"collide-3d-tilemap":7,"events":70,"gl-matrix":8,"inherits":9,"interact":10,"kb-controls":19,"path":73,"pin-it":24,"raf":25,"spatial-events":26,"three":28,"tic":29,"voxel":41,"voxel-control":30,"voxel-mesh":31,"voxel-physical":32,"voxel-raycast":33,"voxel-region-change":34,"voxel-texture":37,"voxel-view":39}],4:[function(require,module,exports){
+/**
+ * @author alteredq / http://alteredqualia.com/
+ * @author mr.doob / http://mrdoob.com/
+ */
+
+module.exports = function() {
+  return {
+  	canvas : !! window.CanvasRenderingContext2D,
+  	webgl : ( function () { try { return !! window.WebGLRenderingContext && !! document.createElement( 'canvas' ).getContext( 'experimental-webgl' ); } catch( e ) { return false; } } )(),
+  	workers : !! window.Worker,
+  	fileapi : window.File && window.FileReader && window.FileList && window.Blob,
+
+  	getWebGLErrorMessage : function () {
+
+  		var domElement = document.createElement( 'div' );
+
+  		domElement.style.fontFamily = 'monospace';
+  		domElement.style.fontSize = '13px';
+  		domElement.style.textAlign = 'center';
+  		domElement.style.background = '#eee';
+  		domElement.style.color = '#000';
+  		domElement.style.padding = '1em';
+  		domElement.style.width = '475px';
+  		domElement.style.margin = '5em auto 0';
+
+  		if ( ! this.webgl ) {
+
+  			domElement.innerHTML = window.WebGLRenderingContext ? [
+  				'Your graphics card does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a>.<br />',
+  				'Find out how to get it <a href="http://get.webgl.org/">here</a>.'
+  			].join( '\n' ) : [
+  				'Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a>.<br/>',
+  				'Find out how to get it <a href="http://get.webgl.org/">here</a>.'
+  			].join( '\n' );
+
+  		}
+
+  		return domElement;
+
+  	},
+
+  	addGetWebGLMessage : function ( parameters ) {
+
+  		var parent, id, domElement;
+
+  		parameters = parameters || {};
+
+  		parent = parameters.parent !== undefined ? parameters.parent : document.body;
+  		id = parameters.id !== undefined ? parameters.id : 'oldie';
+
+  		domElement = Detector.getWebGLErrorMessage();
+  		domElement.id = id;
+
+  		parent.appendChild( domElement );
+
+  	}
+
+  };
+}
+
+},{}],5:[function(require,module,exports){
+/**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+var Stats = function () {
+
+	var startTime = Date.now(), prevTime = startTime;
+	var ms = 0, msMin = Infinity, msMax = 0;
+	var fps = 0, fpsMin = Infinity, fpsMax = 0;
+	var frames = 0, mode = 0;
+
+	var container = document.createElement( 'div' );
+	container.id = 'stats';
+	container.addEventListener( 'mousedown', function ( event ) { event.preventDefault(); setMode( ++ mode % 2 ) }, false );
+	container.style.cssText = 'width:80px;opacity:0.9;cursor:pointer';
+
+	var fpsDiv = document.createElement( 'div' );
+	fpsDiv.id = 'fps';
+	fpsDiv.style.cssText = 'padding:0 0 3px 3px;text-align:left;background-color:#002';
+	container.appendChild( fpsDiv );
+
+	var fpsText = document.createElement( 'div' );
+	fpsText.id = 'fpsText';
+	fpsText.style.cssText = 'color:#0ff;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px';
+	fpsText.innerHTML = 'FPS';
+	fpsDiv.appendChild( fpsText );
+
+	var fpsGraph = document.createElement( 'div' );
+	fpsGraph.id = 'fpsGraph';
+	fpsGraph.style.cssText = 'position:relative;width:74px;height:30px;background-color:#0ff';
+	fpsDiv.appendChild( fpsGraph );
+
+	while ( fpsGraph.children.length < 74 ) {
+
+		var bar = document.createElement( 'span' );
+		bar.style.cssText = 'width:1px;height:30px;float:left;background-color:#113';
+		fpsGraph.appendChild( bar );
+
+	}
+
+	var msDiv = document.createElement( 'div' );
+	msDiv.id = 'ms';
+	msDiv.style.cssText = 'padding:0 0 3px 3px;text-align:left;background-color:#020;display:none';
+	container.appendChild( msDiv );
+
+	var msText = document.createElement( 'div' );
+	msText.id = 'msText';
+	msText.style.cssText = 'color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px';
+	msText.innerHTML = 'MS';
+	msDiv.appendChild( msText );
+
+	var msGraph = document.createElement( 'div' );
+	msGraph.id = 'msGraph';
+	msGraph.style.cssText = 'position:relative;width:74px;height:30px;background-color:#0f0';
+	msDiv.appendChild( msGraph );
+
+	while ( msGraph.children.length < 74 ) {
+
+		var bar = document.createElement( 'span' );
+		bar.style.cssText = 'width:1px;height:30px;float:left;background-color:#131';
+		msGraph.appendChild( bar );
+
+	}
+
+	var setMode = function ( value ) {
+
+		mode = value;
+
+		switch ( mode ) {
+
+			case 0:
+				fpsDiv.style.display = 'block';
+				msDiv.style.display = 'none';
+				break;
+			case 1:
+				fpsDiv.style.display = 'none';
+				msDiv.style.display = 'block';
+				break;
+		}
+
+	}
+
+	var updateGraph = function ( dom, value ) {
+
+		var child = dom.appendChild( dom.firstChild );
+		child.style.height = value + 'px';
+
+	}
+
+	return {
+
+		REVISION: 11,
+
+		domElement: container,
+
+		setMode: setMode,
+
+		begin: function () {
+
+			startTime = Date.now();
+
+		},
+
+		end: function () {
+
+			var time = Date.now();
+
+			ms = time - startTime;
+			msMin = Math.min( msMin, ms );
+			msMax = Math.max( msMax, ms );
+
+			msText.textContent = ms + ' MS (' + msMin + '-' + msMax + ')';
+			updateGraph( msGraph, Math.min( 30, 30 - ( ms / 200 ) * 30 ) );
+
+			frames ++;
+
+			if ( time > prevTime + 1000 ) {
+
+				fps = Math.round( ( frames * 1000 ) / ( time - prevTime ) );
+				fpsMin = Math.min( fpsMin, fps );
+				fpsMax = Math.max( fpsMax, fps );
+
+				fpsText.textContent = fps + ' FPS (' + fpsMin + '-' + fpsMax + ')';
+				updateGraph( fpsGraph, Math.min( 30, 30 - ( fps / 100 ) * 30 ) );
+
+				prevTime = time;
+				frames = 0;
+
+			}
+
+			return time;
+
+		},
+
+		update: function () {
+
+			startTime = this.end();
+
+		}
+
+	}
+
+};
+
+module.exports = Stats
+},{}],6:[function(require,module,exports){
+module.exports = AABB
+
+var vec3 = require('gl-matrix').vec3
+
+function AABB(pos, vec) {
+  if(!(this instanceof AABB)) {
+    return new AABB(pos, vec)
+  }
+
+  this.base = pos
+  this.vec = vec
+
+  this.mag = vec3.length(this.vec)
+
+  this.max = vec3.create()
+  vec3.add(this.max, this.base, this.vec)
+}
+
+var cons = AABB
+  , proto = cons.prototype
+
+proto.width = function() {
+  return this.vec[0]
+}
+
+proto.height = function() {
+  return this.vec[1]
+}
+
+proto.depth = function() {
+  return this.vec[2]
+}
+
+proto.x0 = function() {
+  return this.base[0]
+}
+
+proto.y0 = function() {
+  return this.base[1]
+}
+
+proto.z0 = function() {
+  return this.base[2]
+}
+
+proto.x1 = function() {
+  return this.max[0]
+}
+
+proto.y1 = function() {
+  return this.max[1]
+}
+
+proto.z1 = function() {
+  return this.max[2]
+}
+
+proto.translate = function(by) {
+  vec3.add(this.max, this.max, by)
+  vec3.add(this.base, this.base, by)
+  return this
+}
+
+proto.expand = function(aabb) {
+  var max = vec3.create()
+    , min = vec3.create()
+
+  vec3.max(max, aabb.max, this.max)
+  vec3.min(min, aabb.base, this.base)
+  vec3.sub(max, max, min)
+
+  return new AABB(min, max)
+}
+
+proto.intersects = function(aabb) {
+  if(aabb.base[0] > this.max[0]) return false
+  if(aabb.base[1] > this.max[1]) return false
+  if(aabb.base[2] > this.max[2]) return false
+  if(aabb.max[0] < this.base[0]) return false
+  if(aabb.max[1] < this.base[1]) return false
+  if(aabb.max[2] < this.base[2]) return false
+
+  return true
+}
+
+proto.union = function(aabb) {
+  if(!this.intersects(aabb)) return null
+
+  var base_x = Math.max(aabb.base[0], this.base[0])
+    , base_y = Math.max(aabb.base[1], this.base[1])
+    , base_z = Math.max(aabb.base[2], this.base[2])
+    , max_x = Math.min(aabb.max[0], this.max[0])
+    , max_y = Math.min(aabb.max[1], this.max[1])
+    , max_z = Math.min(aabb.max[2], this.max[2])
+
+  return new AABB([base_x, base_y, base_z], [max_x - base_x, max_y - base_y, max_z - base_z])
+}
+
+},{"gl-matrix":8}],7:[function(require,module,exports){
+module.exports = function(field, tilesize, dimensions, offset) {
+  dimensions = dimensions || [ 
+    Math.sqrt(field.length) >> 0
+  , Math.sqrt(field.length) >> 0
+  , Math.sqrt(field.length) >> 0
+  ] 
+
+  offset = offset || [
+    0
+  , 0
+  , 0
+  ]
+
+  field = typeof field === 'function' ? field : function(x, y, z) {
+    return this[x + y * dimensions[1] + (z * dimensions[1] * dimensions[2])]
+  }.bind(field) 
+
+  var coords
+
+  coords = [0, 0, 0]
+
+  return collide
+
+  function collide(box, vec, oncollision) {
+    if(vec[0] === 0 && vec[1] === 0 && vec[2] === 0) return
+
+    // collide x, then y
+    collideaxis(0)
+    collideaxis(1)
+    collideaxis(2)
+
+    function collideaxis(i_axis) {
+      var j_axis = (i_axis + 1) % 3
+        , k_axis = (i_axis + 2) % 3 
+        , posi = vec[i_axis] > 0
+        , leading = box[posi ? 'max' : 'base'][i_axis] 
+        , dir = posi ? 1 : -1
+        , i_start = Math.floor(leading / tilesize)
+        , i_end = (Math.floor((leading + vec[i_axis]) / tilesize)) + dir
+        , j_start = Math.floor(box.base[j_axis] / tilesize)
+        , j_end = Math.ceil(box.max[j_axis] / tilesize)
+        , k_start = Math.floor(box.base[k_axis] / tilesize) 
+        , k_end = Math.ceil(box.max[k_axis] / tilesize)
+        , done = false
+        , edge_vector
+        , edge
+        , tile
+
+      // loop from the current tile coord to the dest tile coord
+      //    -> loop on the opposite axis to get the other candidates
+      //      -> if `oncollision` return `true` we've hit something and
+      //         should break out of the loops entirely.
+      //         NB: `oncollision` is where the client gets the chance
+      //         to modify the `vec` in-flight.
+      // once we're done translate the box to the vec results
+
+      var step = 0
+      for(var i = i_start; !done && i !== i_end; ++step, i += dir) {
+        if(i < offset[i_axis] || i >= dimensions[i_axis]) continue
+        for(var j = j_start; !done && j !== j_end; ++j) {
+          if(j < offset[j_axis] || j >= dimensions[j_axis]) continue
+          for(var k = k_start; k !== k_end; ++k) {
+            if(k < offset[k_axis] || k >= dimensions[k_axis]) continue
+            coords[i_axis] = i
+            coords[j_axis] = j
+            coords[k_axis] = k
+            tile = field.apply(field, coords)
+
+            if(tile === undefined) continue
+
+            edge = dir > 0 ? i * tilesize : (i + 1) * tilesize
+            edge_vector = edge - leading
+
+            if(oncollision(i_axis, tile, coords, dir, edge_vector)) {
+              done = true
+              break
+            }
+          } 
+        }
+      }
+
+      coords[0] = coords[1] = coords[2] = 0
+      coords[i_axis] = vec[i_axis]
+      box.translate(coords)
+    }
+  }  
+}
+
+},{}],8:[function(require,module,exports){
+/**
+ * @fileoverview gl-matrix - High performance matrix and vector operations
+ * @author Brandon Jones
+ * @author Colin MacKenzie IV
+ * @version 2.0.0
+ */
+
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+
+(function() {
+  "use strict";
+
+  var shim = {};
+  if (typeof(exports) === 'undefined') {
+    if(typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
+      shim.exports = {};
+      define(function() {
+        return shim.exports;
+      });
+    } else {
+      // gl-matrix lives in a browser, define its namespaces in global
+      shim.exports = window;
+    }    
+  }
+  else {
+    // gl-matrix lives in commonjs, define its namespaces in exports
+    shim.exports = exports;
+  }
+
+  (function(exports) {
+    /* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 2 Dimensional Vector
+ * @name vec2
+ */
+
+var vec2 = {};
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+ 
+/**
+ * Creates a new, empty vec2
+ *
+ * @returns {vec2} a new 2D vector
+ */
+vec2.create = function() {
+    return new Float32Array(2);
+};
+
+/**
+ * Creates a new vec2 initialized with values from an existing vector
+ *
+ * @param {vec2} a vector to clone
+ * @returns {vec2} a new 2D vector
+ */
+vec2.clone = function(a) {
+    var out = new Float32Array(2);
+    out[0] = a[0];
+    out[1] = a[1];
+    return out;
+};
+
+/**
+ * Creates a new vec2 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @returns {vec2} a new 2D vector
+ */
+vec2.fromValues = function(x, y) {
+    var out = new Float32Array(2);
+    out[0] = x;
+    out[1] = y;
+    return out;
+};
+
+/**
+ * Copy the values from one vec2 to another
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the source vector
+ * @returns {vec2} out
+ */
+vec2.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    return out;
+};
+
+/**
+ * Set the components of a vec2 to the given values
+ *
+ * @param {vec2} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @returns {vec2} out
+ */
+vec2.set = function(out, x, y) {
+    out[0] = x;
+    out[1] = y;
+    return out;
+};
+
+/**
+ * Adds two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.add = function(out, a, b) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    return out;
+};
+
+/**
+ * Subtracts two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.sub = vec2.subtract = function(out, a, b) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    return out;
+};
+
+/**
+ * Multiplies two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.mul = vec2.multiply = function(out, a, b) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    return out;
+};
+
+/**
+ * Divides two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.div = vec2.divide = function(out, a, b) {
+    out[0] = a[0] / b[0];
+    out[1] = a[1] / b[1];
+    return out;
+};
+
+/**
+ * Returns the minimum of two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.min = function(out, a, b) {
+    out[0] = Math.min(a[0], b[0]);
+    out[1] = Math.min(a[1], b[1]);
+    return out;
+};
+
+/**
+ * Returns the maximum of two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.max = function(out, a, b) {
+    out[0] = Math.max(a[0], b[0]);
+    out[1] = Math.max(a[1], b[1]);
+    return out;
+};
+
+/**
+ * Scales a vec2 by a scalar number
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to scale
+ * @param {vec2} b amount to scale the vector by
+ * @returns {vec2} out
+ */
+vec2.scale = function(out, a, b) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec2.dist = vec2.distance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1];
+    return Math.sqrt(x*x + y*y);
+};
+
+/**
+ * Calculates the squared euclidian distance between two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec2.sqrDist = vec2.squaredDistance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1];
+    return x*x + y*y;
+};
+
+/**
+ * Caclulates the length of a vec2
+ *
+ * @param {vec2} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec2.len = vec2.length = function (a) {
+    var x = a[0],
+        y = a[1];
+    return Math.sqrt(x*x + y*y);
+};
+
+/**
+ * Caclulates the squared length of a vec2
+ *
+ * @param {vec2} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec2.sqrLen = vec2.squaredLength = function (a) {
+    var x = a[0],
+        y = a[1];
+    return x*x + y*y;
+};
+
+/**
+ * Negates the components of a vec2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a vector to negate
+ * @returns {vec2} out
+ */
+vec2.negate = function(out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    return out;
+};
+
+/**
+ * Normalize a vec2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a vector to normalize
+ * @returns {vec2} out
+ */
+vec2.normalize = function(out, a) {
+    var x = a[0],
+        y = a[1];
+    var len = x*x + y*y;
+    if (len > 0) {
+        //TODO: evaluate use of glm_invsqrt here?
+        len = 1 / Math.sqrt(len);
+        out[0] = a[0] * len;
+        out[1] = a[1] * len;
+    }
+    return out;
+};
+
+/**
+ * Caclulates the dot product of two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec2.dot = function (a, b) {
+    return a[0] * b[0] + a[1] * b[1];
+};
+
+/**
+ * Computes the cross product of two vec2's
+ * Note that the cross product must by definition produce a 3D vector
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec3} out
+ */
+vec2.cross = function(out, a, b) {
+    var z = a[0] * b[1] - a[1] * b[0];
+    out[0] = out[1] = 0;
+    out[2] = z;
+    return out;
+};
+
+/**
+ * Performs a linear interpolation between two vec2's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec2} out
+ */
+vec2.lerp = function (out, a, b, t) {
+    var ax = a[0],
+        ay = a[1];
+    out[0] = ax + t * (b[0] - ax);
+    out[1] = ay + t * (b[1] - ay);
+    return out;
+};
+
+/**
+ * Transforms the vec2 with a mat2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat2} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat2 = function(out, a, m) {
+    var x = a[0],
+        y = a[1];
+    out[0] = x * m[0] + y * m[1];
+    out[1] = x * m[2] + y * m[3];
+    return out;
+};
+
+/**
+ * Perform some operation over an array of vec2s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ */
+vec2.forEach = (function() {
+    var vec = new Float32Array(2);
+
+    return function(a, stride, offset, count, fn, arg) {
+        var i, l;
+        if(!stride) {
+            stride = 2;
+        }
+
+        if(!offset) {
+            offset = 0;
+        }
+        
+        if(count) {
+            l = Math.min((count * stride) + offset, a.length);
+        } else {
+            l = a.length;
+        }
+
+        for(i = offset; i < l; i += stride) {
+            vec[0] = a[i]; vec[1] = a[i+1];
+            fn(vec, vec, arg);
+            a[i] = vec[0]; a[i+1] = vec[1];
+        }
+        
+        return a;
+    };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec2} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec2.str = function (a) {
+    return 'vec2(' + a[0] + ', ' + a[1] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.vec2 = vec2;
+}
+;
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 3 Dimensional Vector
+ * @name vec3
+ */
+
+var vec3 = {};
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+ 
+/**
+ * Creates a new, empty vec3
+ *
+ * @returns {vec3} a new 3D vector
+ */
+vec3.create = function() {
+    return new Float32Array(3);
+};
+
+/**
+ * Creates a new vec3 initialized with values from an existing vector
+ *
+ * @param {vec3} a vector to clone
+ * @returns {vec3} a new 3D vector
+ */
+vec3.clone = function(a) {
+    var out = new Float32Array(3);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    return out;
+};
+
+/**
+ * Creates a new vec3 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @returns {vec3} a new 3D vector
+ */
+vec3.fromValues = function(x, y, z) {
+    var out = new Float32Array(3);
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    return out;
+};
+
+/**
+ * Copy the values from one vec3 to another
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the source vector
+ * @returns {vec3} out
+ */
+vec3.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    return out;
+};
+
+/**
+ * Set the components of a vec3 to the given values
+ *
+ * @param {vec3} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @returns {vec3} out
+ */
+vec3.set = function(out, x, y, z) {
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    return out;
+};
+
+/**
+ * Adds two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.add = function(out, a, b) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    out[2] = a[2] + b[2];
+    return out;
+};
+
+/**
+ * Subtracts two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.sub = vec3.subtract = function(out, a, b) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    out[2] = a[2] - b[2];
+    return out;
+};
+
+/**
+ * Multiplies two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.mul = vec3.multiply = function(out, a, b) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    out[2] = a[2] * b[2];
+    return out;
+};
+
+/**
+ * Divides two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.div = vec3.divide = function(out, a, b) {
+    out[0] = a[0] / b[0];
+    out[1] = a[1] / b[1];
+    out[2] = a[2] / b[2];
+    return out;
+};
+
+/**
+ * Returns the minimum of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.min = function(out, a, b) {
+    out[0] = Math.min(a[0], b[0]);
+    out[1] = Math.min(a[1], b[1]);
+    out[2] = Math.min(a[2], b[2]);
+    return out;
+};
+
+/**
+ * Returns the maximum of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.max = function(out, a, b) {
+    out[0] = Math.max(a[0], b[0]);
+    out[1] = Math.max(a[1], b[1]);
+    out[2] = Math.max(a[2], b[2]);
+    return out;
+};
+
+/**
+ * Scales a vec3 by a scalar number
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to scale
+ * @param {vec3} b amount to scale the vector by
+ * @returns {vec3} out
+ */
+vec3.scale = function(out, a, b) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    out[2] = a[2] * b;
+    return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec3.dist = vec3.distance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2];
+    return Math.sqrt(x*x + y*y + z*z);
+};
+
+/**
+ * Calculates the squared euclidian distance between two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec3.sqrDist = vec3.squaredDistance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2];
+    return x*x + y*y + z*z;
+};
+
+/**
+ * Caclulates the length of a vec3
+ *
+ * @param {vec3} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec3.len = vec3.length = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2];
+    return Math.sqrt(x*x + y*y + z*z);
+};
+
+/**
+ * Caclulates the squared length of a vec3
+ *
+ * @param {vec3} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec3.sqrLen = vec3.squaredLength = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2];
+    return x*x + y*y + z*z;
+};
+
+/**
+ * Negates the components of a vec3
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a vector to negate
+ * @returns {vec3} out
+ */
+vec3.negate = function(out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    return out;
+};
+
+/**
+ * Normalize a vec3
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a vector to normalize
+ * @returns {vec3} out
+ */
+vec3.normalize = function(out, a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2];
+    var len = x*x + y*y + z*z;
+    if (len > 0) {
+        //TODO: evaluate use of glm_invsqrt here?
+        len = 1 / Math.sqrt(len);
+        out[0] = a[0] * len;
+        out[1] = a[1] * len;
+        out[2] = a[2] * len;
+    }
+    return out;
+};
+
+/**
+ * Caclulates the dot product of two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec3.dot = function (a, b) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+};
+
+/**
+ * Computes the cross product of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.cross = function(out, a, b) {
+    var ax = a[0], ay = a[1], az = a[2],
+        bx = b[0], by = b[1], bz = b[2];
+
+    out[0] = ay * bz - az * by;
+    out[1] = az * bx - ax * bz;
+    out[2] = ax * by - ay * bx;
+    return out;
+};
+
+/**
+ * Performs a linear interpolation between two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec3} out
+ */
+vec3.lerp = function (out, a, b, t) {
+    var ax = a[0],
+        ay = a[1],
+        az = a[2];
+    out[0] = ax + t * (b[0] - ax);
+    out[1] = ay + t * (b[1] - ay);
+    out[2] = az + t * (b[2] - az);
+    return out;
+};
+
+/**
+ * Transforms the vec3 with a mat4.
+ * 4th vector component is implicitly '1'
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec3} out
+ */
+vec3.transformMat4 = function(out, a, m) {
+    var x = a[0], y = a[1], z = a[2];
+    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12];
+    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13];
+    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14];
+    return out;
+};
+
+/**
+ * Transforms the vec3 with a quat
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {quat} q quaternion to transform with
+ * @returns {vec3} out
+ */
+vec3.transformQuat = function(out, a, q) {
+    var x = a[0], y = a[1], z = a[2],
+        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+
+        // calculate quat * vec
+        ix = qw * x + qy * z - qz * y,
+        iy = qw * y + qz * x - qx * z,
+        iz = qw * z + qx * y - qy * x,
+        iw = -qx * x - qy * y - qz * z;
+
+    // calculate result * inverse quat
+    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+    return out;
+};
+
+/**
+ * Perform some operation over an array of vec3s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ */
+vec3.forEach = (function() {
+    var vec = new Float32Array(3);
+
+    return function(a, stride, offset, count, fn, arg) {
+        var i, l;
+        if(!stride) {
+            stride = 3;
+        }
+
+        if(!offset) {
+            offset = 0;
+        }
+        
+        if(count) {
+            l = Math.min((count * stride) + offset, a.length);
+        } else {
+            l = a.length;
+        }
+
+        for(i = offset; i < l; i += stride) {
+            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
+            fn(vec, vec, arg);
+            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
+        }
+        
+        return a;
+    };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec3} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec3.str = function (a) {
+    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.vec3 = vec3;
+}
+;
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 4 Dimensional Vector
+ * @name vec4
+ */
+
+var vec4 = {};
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+
+/**
+ * Creates a new, empty vec4
+ *
+ * @returns {vec4} a new 4D vector
+ */
+vec4.create = function() {
+    return new Float32Array(4);
+};
+
+/**
+ * Creates a new vec4 initialized with values from an existing vector
+ *
+ * @param {vec4} a vector to clone
+ * @returns {vec4} a new 4D vector
+ */
+vec4.clone = function(a) {
+    var out = new Float32Array(4);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Creates a new vec4 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {vec4} a new 4D vector
+ */
+vec4.fromValues = function(x, y, z, w) {
+    var out = new Float32Array(4);
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    out[3] = w;
+    return out;
+};
+
+/**
+ * Copy the values from one vec4 to another
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the source vector
+ * @returns {vec4} out
+ */
+vec4.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Set the components of a vec4 to the given values
+ *
+ * @param {vec4} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {vec4} out
+ */
+vec4.set = function(out, x, y, z, w) {
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    out[3] = w;
+    return out;
+};
+
+/**
+ * Adds two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.add = function(out, a, b) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    out[2] = a[2] + b[2];
+    out[3] = a[3] + b[3];
+    return out;
+};
+
+/**
+ * Subtracts two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.sub = vec4.subtract = function(out, a, b) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    out[2] = a[2] - b[2];
+    out[3] = a[3] - b[3];
+    return out;
+};
+
+/**
+ * Multiplies two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.mul = vec4.multiply = function(out, a, b) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    out[2] = a[2] * b[2];
+    out[3] = a[3] * b[3];
+    return out;
+};
+
+/**
+ * Divides two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.div = vec4.divide = function(out, a, b) {
+    out[0] = a[0] / b[0];
+    out[1] = a[1] / b[1];
+    out[2] = a[2] / b[2];
+    out[3] = a[3] / b[3];
+    return out;
+};
+
+/**
+ * Returns the minimum of two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.min = function(out, a, b) {
+    out[0] = Math.min(a[0], b[0]);
+    out[1] = Math.min(a[1], b[1]);
+    out[2] = Math.min(a[2], b[2]);
+    out[3] = Math.min(a[3], b[3]);
+    return out;
+};
+
+/**
+ * Returns the maximum of two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.max = function(out, a, b) {
+    out[0] = Math.max(a[0], b[0]);
+    out[1] = Math.max(a[1], b[1]);
+    out[2] = Math.max(a[2], b[2]);
+    out[3] = Math.max(a[3], b[3]);
+    return out;
+};
+
+/**
+ * Scales a vec4 by a scalar number
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to scale
+ * @param {vec4} b amount to scale the vector by
+ * @returns {vec4} out
+ */
+vec4.scale = function(out, a, b) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    out[2] = a[2] * b;
+    out[3] = a[3] * b;
+    return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec4.dist = vec4.distance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2],
+        w = b[3] - a[3];
+    return Math.sqrt(x*x + y*y + z*z + w*w);
+};
+
+/**
+ * Calculates the squared euclidian distance between two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec4.sqrDist = vec4.squaredDistance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2],
+        w = b[3] - a[3];
+    return x*x + y*y + z*z + w*w;
+};
+
+/**
+ * Caclulates the length of a vec4
+ *
+ * @param {vec4} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec4.len = vec4.length = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2],
+        w = a[3];
+    return Math.sqrt(x*x + y*y + z*z + w*w);
+};
+
+/**
+ * Caclulates the squared length of a vec4
+ *
+ * @param {vec4} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec4.sqrLen = vec4.squaredLength = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2],
+        w = a[3];
+    return x*x + y*y + z*z + w*w;
+};
+
+/**
+ * Negates the components of a vec4
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a vector to negate
+ * @returns {vec4} out
+ */
+vec4.negate = function(out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    out[3] = -a[3];
+    return out;
+};
+
+/**
+ * Normalize a vec4
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a vector to normalize
+ * @returns {vec4} out
+ */
+vec4.normalize = function(out, a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2],
+        w = a[3];
+    var len = x*x + y*y + z*z + w*w;
+    if (len > 0) {
+        len = 1 / Math.sqrt(len);
+        out[0] = a[0] * len;
+        out[1] = a[1] * len;
+        out[2] = a[2] * len;
+        out[3] = a[3] * len;
+    }
+    return out;
+};
+
+/**
+ * Caclulates the dot product of two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec4.dot = function (a, b) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+};
+
+/**
+ * Performs a linear interpolation between two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec4} out
+ */
+vec4.lerp = function (out, a, b, t) {
+    var ax = a[0],
+        ay = a[1],
+        az = a[2],
+        aw = a[3];
+    out[0] = ax + t * (b[0] - ax);
+    out[1] = ay + t * (b[1] - ay);
+    out[2] = az + t * (b[2] - az);
+    out[3] = aw + t * (b[3] - aw);
+    return out;
+};
+
+/**
+ * Transforms the vec4 with a mat4.
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec4} out
+ */
+vec4.transformMat4 = function(out, a, m) {
+    var x = a[0], y = a[1], z = a[2], w = a[3];
+    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+    return out;
+};
+
+/**
+ * Transforms the vec4 with a quat
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to transform
+ * @param {quat} q quaternion to transform with
+ * @returns {vec4} out
+ */
+vec4.transformQuat = function(out, a, q) {
+    var x = a[0], y = a[1], z = a[2],
+        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+
+        // calculate quat * vec
+        ix = qw * x + qy * z - qz * y,
+        iy = qw * y + qz * x - qx * z,
+        iz = qw * z + qx * y - qy * x,
+        iw = -qx * x - qy * y - qz * z;
+
+    // calculate result * inverse quat
+    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+    return out;
+};
+
+/**
+ * Perform some operation over an array of vec4s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ */
+vec4.forEach = (function() {
+    var vec = new Float32Array(4);
+
+    return function(a, stride, offset, count, fn, arg) {
+        var i, l;
+        if(!stride) {
+            stride = 4;
+        }
+
+        if(!offset) {
+            offset = 0;
+        }
+        
+        if(count) {
+            l = Math.min((count * stride) + offset, a.length);
+        } else {
+            l = a.length;
+        }
+
+        for(i = offset; i < l; i += stride) {
+            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
+            fn(vec, vec, arg);
+            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
+        }
+        
+        return a;
+    };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec4} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec4.str = function (a) {
+    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.vec4 = vec4;
+}
+;
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 2x2 Matrix
+ * @name mat2
+ */
+
+var mat2 = {};
+
+var mat2Identity = new Float32Array([
+    1, 0,
+    0, 1
+]);
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+
+/**
+ * Creates a new identity mat2
+ *
+ * @returns {mat2} a new 2x2 matrix
+ */
+mat2.create = function() {
+    return new Float32Array(mat2Identity);
+};
+
+/**
+ * Creates a new mat2 initialized with values from an existing matrix
+ *
+ * @param {mat2} a matrix to clone
+ * @returns {mat2} a new 2x2 matrix
+ */
+mat2.clone = function(a) {
+    var out = new Float32Array(4);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Copy the values from one mat2 to another
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Set a mat2 to the identity matrix
+ *
+ * @param {mat2} out the receiving matrix
+ * @returns {mat2} out
+ */
+mat2.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    return out;
+};
+
+/**
+ * Transpose the values of a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.transpose = function(out, a) {
+    // If we are transposing ourselves we can skip a few steps but have to cache some values
+    if (out === a) {
+        var a1 = a[1];
+        out[1] = a[2];
+        out[2] = a1;
+    } else {
+        out[0] = a[0];
+        out[1] = a[2];
+        out[2] = a[1];
+        out[3] = a[3];
+    }
+    
+    return out;
+};
+
+/**
+ * Inverts a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.invert = function(out, a) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+
+        // Calculate the determinant
+        det = a0 * a3 - a2 * a1;
+
+    if (!det) {
+        return null;
+    }
+    det = 1.0 / det;
+    
+    out[0] =  a3 * det;
+    out[1] = -a1 * det;
+    out[2] = -a2 * det;
+    out[3] =  a0 * det;
+
+    return out;
+};
+
+/**
+ * Caclulates the adjugate of a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.adjoint = function(out, a) {
+    // Caching this value is nessecary if out == a
+    var a0 = a[0];
+    out[0] =  a[3];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    out[3] =  a0;
+
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat2
+ *
+ * @param {mat2} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat2.determinant = function (a) {
+    return a[0] * a[3] - a[2] * a[1];
+};
+
+/**
+ * Multiplies two mat2's
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the first operand
+ * @param {mat2} b the second operand
+ * @returns {mat2} out
+ */
+mat2.mul = mat2.multiply = function (out, a, b) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+    out[0] = a0 * b0 + a1 * b2;
+    out[1] = a0 * b1 + a1 * b3;
+    out[2] = a2 * b0 + a3 * b2;
+    out[3] = a2 * b1 + a3 * b3;
+    return out;
+};
+
+/**
+ * Rotates a mat2 by the given angle
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the matrix to rotate
+ * @param {mat2} rad the angle to rotate the matrix by
+ * @returns {mat2} out
+ */
+mat2.rotate = function (out, a, rad) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+        s = Math.sin(rad),
+        c = Math.cos(rad);
+    out[0] = a0 *  c + a1 * s;
+    out[1] = a0 * -s + a1 * c;
+    out[2] = a2 *  c + a3 * s;
+    out[3] = a2 * -s + a3 * c;
+    return out;
+};
+
+/**
+ * Scales the mat2 by the dimensions in the given vec2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the matrix to rotate
+ * @param {mat2} v the vec2 to scale the matrix by
+ * @returns {mat2} out
+ **/
+mat2.scale = function(out, a, v) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+        v0 = v[0], v1 = v[1];
+    out[0] = a0 * v0;
+    out[1] = a1 * v1;
+    out[2] = a2 * v0;
+    out[3] = a3 * v1;
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat2
+ *
+ * @param {mat2} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat2.str = function (a) {
+    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat2 = mat2;
+}
+;
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 3x3 Matrix
+ * @name mat3
+ */
+
+var mat3 = {};
+
+var mat3Identity = new Float32Array([
+    1, 0, 0,
+    0, 1, 0,
+    0, 0, 1
+]);
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+
+/**
+ * Creates a new identity mat3
+ *
+ * @returns {mat3} a new 3x3 matrix
+ */
+mat3.create = function() {
+    return new Float32Array(mat3Identity);
+};
+
+/**
+ * Creates a new mat3 initialized with values from an existing matrix
+ *
+ * @param {mat3} a matrix to clone
+ * @returns {mat3} a new 3x3 matrix
+ */
+mat3.clone = function(a) {
+    var out = new Float32Array(9);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    return out;
+};
+
+/**
+ * Copy the values from one mat3 to another
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    return out;
+};
+
+/**
+ * Set a mat3 to the identity matrix
+ *
+ * @param {mat3} out the receiving matrix
+ * @returns {mat3} out
+ */
+mat3.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 1;
+    out[5] = 0;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 1;
+    return out;
+};
+
+/**
+ * Transpose the values of a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.transpose = function(out, a) {
+    // If we are transposing ourselves we can skip a few steps but have to cache some values
+    if (out === a) {
+        var a01 = a[1], a02 = a[2], a12 = a[5];
+        out[1] = a[3];
+        out[2] = a[6];
+        out[3] = a01;
+        out[5] = a[7];
+        out[6] = a02;
+        out[7] = a12;
+    } else {
+        out[0] = a[0];
+        out[1] = a[3];
+        out[2] = a[6];
+        out[3] = a[1];
+        out[4] = a[4];
+        out[5] = a[7];
+        out[6] = a[2];
+        out[7] = a[5];
+        out[8] = a[8];
+    }
+    
+    return out;
+};
+
+/**
+ * Inverts a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.invert = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8],
+
+        b01 = a22 * a11 - a12 * a21,
+        b11 = -a22 * a10 + a12 * a20,
+        b21 = a21 * a10 - a11 * a20,
+
+        // Calculate the determinant
+        det = a00 * b01 + a01 * b11 + a02 * b21;
+
+    if (!det) { 
+        return null; 
+    }
+    det = 1.0 / det;
+
+    out[0] = b01 * det;
+    out[1] = (-a22 * a01 + a02 * a21) * det;
+    out[2] = (a12 * a01 - a02 * a11) * det;
+    out[3] = b11 * det;
+    out[4] = (a22 * a00 - a02 * a20) * det;
+    out[5] = (-a12 * a00 + a02 * a10) * det;
+    out[6] = b21 * det;
+    out[7] = (-a21 * a00 + a01 * a20) * det;
+    out[8] = (a11 * a00 - a01 * a10) * det;
+    return out;
+};
+
+/**
+ * Caclulates the adjugate of a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.adjoint = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8];
+
+    out[0] = (a11 * a22 - a12 * a21);
+    out[1] = (a02 * a21 - a01 * a22);
+    out[2] = (a01 * a12 - a02 * a11);
+    out[3] = (a12 * a20 - a10 * a22);
+    out[4] = (a00 * a22 - a02 * a20);
+    out[5] = (a02 * a10 - a00 * a12);
+    out[6] = (a10 * a21 - a11 * a20);
+    out[7] = (a01 * a20 - a00 * a21);
+    out[8] = (a00 * a11 - a01 * a10);
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat3
+ *
+ * @param {mat3} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat3.determinant = function (a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8];
+
+    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
+};
+
+/**
+ * Multiplies two mat3's
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the first operand
+ * @param {mat3} b the second operand
+ * @returns {mat3} out
+ */
+mat3.mul = mat3.multiply = function (out, a, b) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8],
+
+        b00 = b[0], b01 = b[1], b02 = b[2],
+        b10 = b[3], b11 = b[4], b12 = b[5],
+        b20 = b[6], b21 = b[7], b22 = b[8];
+
+    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
+    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
+    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
+
+    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
+    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
+    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
+
+    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
+    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
+    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat3
+ *
+ * @param {mat3} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat3.str = function (a) {
+    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
+                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat3 = mat3;
+}
+;
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 4x4 Matrix
+ * @name mat4
+ */
+
+var mat4 = {};
+
+var mat4Identity = new Float32Array([
+    1, 0, 0, 0,
+    0, 1, 0, 0,
+    0, 0, 1, 0,
+    0, 0, 0, 1
+]);
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+
+/**
+ * Creates a new identity mat4
+ *
+ * @returns {mat4} a new 4x4 matrix
+ */
+mat4.create = function() {
+    return new Float32Array(mat4Identity);
+};
+
+/**
+ * Creates a new mat4 initialized with values from an existing matrix
+ *
+ * @param {mat4} a matrix to clone
+ * @returns {mat4} a new 4x4 matrix
+ */
+mat4.clone = function(a) {
+    var out = new Float32Array(16);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    out[9] = a[9];
+    out[10] = a[10];
+    out[11] = a[11];
+    out[12] = a[12];
+    out[13] = a[13];
+    out[14] = a[14];
+    out[15] = a[15];
+    return out;
+};
+
+/**
+ * Copy the values from one mat4 to another
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    out[9] = a[9];
+    out[10] = a[10];
+    out[11] = a[11];
+    out[12] = a[12];
+    out[13] = a[13];
+    out[14] = a[14];
+    out[15] = a[15];
+    return out;
+};
+
+/**
+ * Set a mat4 to the identity matrix
+ *
+ * @param {mat4} out the receiving matrix
+ * @returns {mat4} out
+ */
+mat4.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = 1;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = 1;
+    out[11] = 0;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = 0;
+    out[15] = 1;
+    return out;
+};
+
+/**
+ * Transpose the values of a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.transpose = function(out, a) {
+    // If we are transposing ourselves we can skip a few steps but have to cache some values
+    if (out === a) {
+        var a01 = a[1], a02 = a[2], a03 = a[3],
+            a12 = a[6], a13 = a[7],
+            a23 = a[11];
+
+        out[1] = a[4];
+        out[2] = a[8];
+        out[3] = a[12];
+        out[4] = a01;
+        out[6] = a[9];
+        out[7] = a[13];
+        out[8] = a02;
+        out[9] = a12;
+        out[11] = a[14];
+        out[12] = a03;
+        out[13] = a13;
+        out[14] = a23;
+    } else {
+        out[0] = a[0];
+        out[1] = a[4];
+        out[2] = a[8];
+        out[3] = a[12];
+        out[4] = a[1];
+        out[5] = a[5];
+        out[6] = a[9];
+        out[7] = a[13];
+        out[8] = a[2];
+        out[9] = a[6];
+        out[10] = a[10];
+        out[11] = a[14];
+        out[12] = a[3];
+        out[13] = a[7];
+        out[14] = a[11];
+        out[15] = a[15];
+    }
+    
+    return out;
+};
+
+/**
+ * Inverts a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.invert = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+        b00 = a00 * a11 - a01 * a10,
+        b01 = a00 * a12 - a02 * a10,
+        b02 = a00 * a13 - a03 * a10,
+        b03 = a01 * a12 - a02 * a11,
+        b04 = a01 * a13 - a03 * a11,
+        b05 = a02 * a13 - a03 * a12,
+        b06 = a20 * a31 - a21 * a30,
+        b07 = a20 * a32 - a22 * a30,
+        b08 = a20 * a33 - a23 * a30,
+        b09 = a21 * a32 - a22 * a31,
+        b10 = a21 * a33 - a23 * a31,
+        b11 = a22 * a33 - a23 * a32,
+
+        // Calculate the determinant
+        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+
+    if (!det) { 
+        return null; 
+    }
+    det = 1.0 / det;
+
+    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+
+    return out;
+};
+
+/**
+ * Caclulates the adjugate of a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.adjoint = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
+    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
+    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
+    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
+    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
+    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
+    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
+    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
+    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
+    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
+    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
+    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
+    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
+    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
+    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
+    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat4
+ *
+ * @param {mat4} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat4.determinant = function (a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+        b00 = a00 * a11 - a01 * a10,
+        b01 = a00 * a12 - a02 * a10,
+        b02 = a00 * a13 - a03 * a10,
+        b03 = a01 * a12 - a02 * a11,
+        b04 = a01 * a13 - a03 * a11,
+        b05 = a02 * a13 - a03 * a12,
+        b06 = a20 * a31 - a21 * a30,
+        b07 = a20 * a32 - a22 * a30,
+        b08 = a20 * a33 - a23 * a30,
+        b09 = a21 * a32 - a22 * a31,
+        b10 = a21 * a33 - a23 * a31,
+        b11 = a22 * a33 - a23 * a32;
+
+    // Calculate the determinant
+    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+};
+
+/**
+ * Multiplies two mat4's
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the first operand
+ * @param {mat4} b the second operand
+ * @returns {mat4} out
+ */
+mat4.mul = mat4.multiply = function (out, a, b) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+    // Cache only the current line of the second matrix
+    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
+    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+    return out;
+};
+
+/**
+ * Translate a mat4 by the given vector
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to translate
+ * @param {vec3} v vector to translate by
+ * @returns {mat4} out
+ */
+mat4.translate = function (out, a, v) {
+    var x = v[0], y = v[1], z = v[2],
+        a00, a01, a02, a03,
+        a10, a11, a12, a13,
+        a20, a21, a22, a23;
+
+    if (a === out) {
+        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+    } else {
+        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+
+        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+
+        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+    }
+
+    return out;
+};
+
+/**
+ * Scales the mat4 by the dimensions in the given vec3
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to scale
+ * @param {vec3} v the vec3 to scale the matrix by
+ * @returns {mat4} out
+ **/
+mat4.scale = function(out, a, v) {
+    var x = v[0], y = v[1], z = v[2];
+
+    out[0] = a[0] * x;
+    out[1] = a[1] * x;
+    out[2] = a[2] * x;
+    out[3] = a[3] * x;
+    out[4] = a[4] * y;
+    out[5] = a[5] * y;
+    out[6] = a[6] * y;
+    out[7] = a[7] * y;
+    out[8] = a[8] * z;
+    out[9] = a[9] * z;
+    out[10] = a[10] * z;
+    out[11] = a[11] * z;
+    out[12] = a[12];
+    out[13] = a[13];
+    out[14] = a[14];
+    out[15] = a[15];
+    return out;
+};
+
+/**
+ * Rotates a mat4 by the given angle
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @param {vec3} axis the axis to rotate around
+ * @returns {mat4} out
+ */
+mat4.rotate = function (out, a, rad, axis) {
+    var x = axis[0], y = axis[1], z = axis[2],
+        len = Math.sqrt(x * x + y * y + z * z),
+        s, c, t,
+        a00, a01, a02, a03,
+        a10, a11, a12, a13,
+        a20, a21, a22, a23,
+        b00, b01, b02,
+        b10, b11, b12,
+        b20, b21, b22;
+
+    if (Math.abs(len) < GLMAT_EPSILON) { return null; }
+    
+    len = 1 / len;
+    x *= len;
+    y *= len;
+    z *= len;
+
+    s = Math.sin(rad);
+    c = Math.cos(rad);
+    t = 1 - c;
+
+    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+
+    // Construct the elements of the rotation matrix
+    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+
+    // Perform rotation-specific matrix multiplication
+    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+    return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the X axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateX = function (out, a, rad) {
+    var s = Math.sin(rad),
+        c = Math.cos(rad),
+        a10 = a[4],
+        a11 = a[5],
+        a12 = a[6],
+        a13 = a[7],
+        a20 = a[8],
+        a21 = a[9],
+        a22 = a[10],
+        a23 = a[11];
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+        out[0]  = a[0];
+        out[1]  = a[1];
+        out[2]  = a[2];
+        out[3]  = a[3];
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+
+    // Perform axis-specific matrix multiplication
+    out[4] = a10 * c + a20 * s;
+    out[5] = a11 * c + a21 * s;
+    out[6] = a12 * c + a22 * s;
+    out[7] = a13 * c + a23 * s;
+    out[8] = a20 * c - a10 * s;
+    out[9] = a21 * c - a11 * s;
+    out[10] = a22 * c - a12 * s;
+    out[11] = a23 * c - a13 * s;
+    return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the Y axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateY = function (out, a, rad) {
+    var s = Math.sin(rad),
+        c = Math.cos(rad),
+        a00 = a[0],
+        a01 = a[1],
+        a02 = a[2],
+        a03 = a[3],
+        a20 = a[8],
+        a21 = a[9],
+        a22 = a[10],
+        a23 = a[11];
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+        out[4]  = a[4];
+        out[5]  = a[5];
+        out[6]  = a[6];
+        out[7]  = a[7];
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+
+    // Perform axis-specific matrix multiplication
+    out[0] = a00 * c - a20 * s;
+    out[1] = a01 * c - a21 * s;
+    out[2] = a02 * c - a22 * s;
+    out[3] = a03 * c - a23 * s;
+    out[8] = a00 * s + a20 * c;
+    out[9] = a01 * s + a21 * c;
+    out[10] = a02 * s + a22 * c;
+    out[11] = a03 * s + a23 * c;
+    return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the Z axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateZ = function (out, a, rad) {
+    var s = Math.sin(rad),
+        c = Math.cos(rad),
+        a00 = a[0],
+        a01 = a[1],
+        a02 = a[2],
+        a03 = a[3],
+        a10 = a[4],
+        a11 = a[5],
+        a12 = a[6],
+        a13 = a[7];
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+        out[8]  = a[8];
+        out[9]  = a[9];
+        out[10] = a[10];
+        out[11] = a[11];
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+
+    // Perform axis-specific matrix multiplication
+    out[0] = a00 * c + a10 * s;
+    out[1] = a01 * c + a11 * s;
+    out[2] = a02 * c + a12 * s;
+    out[3] = a03 * c + a13 * s;
+    out[4] = a10 * c - a00 * s;
+    out[5] = a11 * c - a01 * s;
+    out[6] = a12 * c - a02 * s;
+    out[7] = a13 * c - a03 * s;
+    return out;
+};
+
+/**
+ * Creates a matrix from a quaternion rotation and vector translation
+ * This is equivalent to (but much faster than):
+ *
+ *     mat4.identity(dest);
+ *     mat4.translate(dest, vec);
+ *     var quatMat = mat4.create();
+ *     quat4.toMat4(quat, quatMat);
+ *     mat4.multiply(dest, quatMat);
+ *
+ * @param {mat4} out mat4 receiving operation result
+ * @param {quat4} q Rotation quaternion
+ * @param {vec3} v Translation vector
+ * @returns {mat4} out
+ */
+mat4.fromRotationTranslation = function (out, q, v) {
+    // Quaternion math
+    var x = q[0], y = q[1], z = q[2], w = q[3],
+        x2 = x + x,
+        y2 = y + y,
+        z2 = z + z,
+
+        xx = x * x2,
+        xy = x * y2,
+        xz = x * z2,
+        yy = y * y2,
+        yz = y * z2,
+        zz = z * z2,
+        wx = w * x2,
+        wy = w * y2,
+        wz = w * z2;
+
+    out[0] = 1 - (yy + zz);
+    out[1] = xy + wz;
+    out[2] = xz - wy;
+    out[3] = 0;
+    out[4] = xy - wz;
+    out[5] = 1 - (xx + zz);
+    out[6] = yz + wx;
+    out[7] = 0;
+    out[8] = xz + wy;
+    out[9] = yz - wx;
+    out[10] = 1 - (xx + yy);
+    out[11] = 0;
+    out[12] = v[0];
+    out[13] = v[1];
+    out[14] = v[2];
+    out[15] = 1;
+    
+    return out;
+};
+
+/**
+ * Generates a frustum matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {Number} left Left bound of the frustum
+ * @param {Number} right Right bound of the frustum
+ * @param {Number} bottom Bottom bound of the frustum
+ * @param {Number} top Top bound of the frustum
+ * @param {Number} near Near bound of the frustum
+ * @param {Number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.frustum = function (out, left, right, bottom, top, near, far) {
+    var rl = 1 / (right - left),
+        tb = 1 / (top - bottom),
+        nf = 1 / (near - far);
+    out[0] = (near * 2) * rl;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = (near * 2) * tb;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = (right + left) * rl;
+    out[9] = (top + bottom) * tb;
+    out[10] = (far + near) * nf;
+    out[11] = -1;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = (far * near * 2) * nf;
+    out[15] = 0;
+    return out;
+};
+
+/**
+ * Generates a perspective projection matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {number} fovy Vertical field of view in radians
+ * @param {number} aspect Aspect ratio. typically viewport width/height
+ * @param {number} near Near bound of the frustum
+ * @param {number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.perspective = function (out, fovy, aspect, near, far) {
+    var f = 1.0 / Math.tan(fovy / 2),
+        nf = 1 / (near - far);
+    out[0] = f / aspect;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = f;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = (far + near) * nf;
+    out[11] = -1;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = (2 * far * near) * nf;
+    out[15] = 0;
+    return out;
+};
+
+/**
+ * Generates a orthogonal projection matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {number} left Left bound of the frustum
+ * @param {number} right Right bound of the frustum
+ * @param {number} bottom Bottom bound of the frustum
+ * @param {number} top Top bound of the frustum
+ * @param {number} near Near bound of the frustum
+ * @param {number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.ortho = function (out, left, right, bottom, top, near, far) {
+    var lr = 1 / (left - right),
+        bt = 1 / (bottom - top),
+        nf = 1 / (near - far);
+    out[0] = -2 * lr;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = -2 * bt;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = 2 * nf;
+    out[11] = 0;
+    out[12] = (left + right) * lr;
+    out[13] = (top + bottom) * bt;
+    out[14] = (far + near) * nf;
+    out[15] = 1;
+    return out;
+};
+
+/**
+ * Generates a look-at matrix with the given eye position, focal point, and up axis
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {vec3} eye Position of the viewer
+ * @param {vec3} center Point the viewer is looking at
+ * @param {vec3} up vec3 pointing up
+ * @returns {mat4} out
+ */
+mat4.lookAt = function (out, eye, center, up) {
+    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+        eyex = eye[0],
+        eyey = eye[1],
+        eyez = eye[2],
+        upx = up[0],
+        upy = up[1],
+        upz = up[2],
+        centerx = center[0],
+        centery = center[1],
+        centerz = center[2];
+
+    if (Math.abs(eyex - centerx) < GLMAT_EPSILON &&
+        Math.abs(eyey - centery) < GLMAT_EPSILON &&
+        Math.abs(eyez - centerz) < GLMAT_EPSILON) {
+        return mat4.identity(out);
+    }
+
+    z0 = eyex - centerx;
+    z1 = eyey - centery;
+    z2 = eyez - centerz;
+
+    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+    z0 *= len;
+    z1 *= len;
+    z2 *= len;
+
+    x0 = upy * z2 - upz * z1;
+    x1 = upz * z0 - upx * z2;
+    x2 = upx * z1 - upy * z0;
+    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+    if (!len) {
+        x0 = 0;
+        x1 = 0;
+        x2 = 0;
+    } else {
+        len = 1 / len;
+        x0 *= len;
+        x1 *= len;
+        x2 *= len;
+    }
+
+    y0 = z1 * x2 - z2 * x1;
+    y1 = z2 * x0 - z0 * x2;
+    y2 = z0 * x1 - z1 * x0;
+
+    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+    if (!len) {
+        y0 = 0;
+        y1 = 0;
+        y2 = 0;
+    } else {
+        len = 1 / len;
+        y0 *= len;
+        y1 *= len;
+        y2 *= len;
+    }
+
+    out[0] = x0;
+    out[1] = y0;
+    out[2] = z0;
+    out[3] = 0;
+    out[4] = x1;
+    out[5] = y1;
+    out[6] = z1;
+    out[7] = 0;
+    out[8] = x2;
+    out[9] = y2;
+    out[10] = z2;
+    out[11] = 0;
+    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+    out[15] = 1;
+
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat4
+ *
+ * @param {mat4} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat4.str = function (a) {
+    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
+                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
+                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' + 
+                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat4 = mat4;
+}
+;
+/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class Quaternion
+ * @name quat
+ */
+
+var quat = {};
+
+var quatIdentity = new Float32Array([0, 0, 0, 1]);
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+
+/**
+ * Creates a new identity quat
+ *
+ * @returns {quat} a new quaternion
+ */
+quat.create = function() {
+    return new Float32Array(quatIdentity);
+};
+
+/**
+ * Creates a new quat initialized with values from an existing quaternion
+ *
+ * @param {quat} a quaternion to clone
+ * @returns {quat} a new quaternion
+ */
+quat.clone = vec4.clone;
+
+/**
+ * Creates a new quat initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {quat} a new quaternion
+ */
+quat.fromValues = vec4.fromValues;
+
+/**
+ * Copy the values from one quat to another
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the source quaternion
+ * @returns {quat} out
+ */
+quat.copy = vec4.copy;
+
+/**
+ * Set the components of a quat to the given values
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {quat} out
+ */
+quat.set = vec4.set;
+
+/**
+ * Set a quat to the identity quaternion
+ *
+ * @param {quat} out the receiving quaternion
+ * @returns {quat} out
+ */
+quat.identity = function(out) {
+    out[0] = 0;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    return out;
+};
+
+/**
+ * Sets a quat from the given angle and rotation axis,
+ * then returns it.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {vec3} axis the axis around which to rotate
+ * @param {Number} rad the angle in radians
+ * @returns {quat} out
+ **/
+quat.setAxisAngle = function(out, axis, rad) {
+    rad = rad * 0.5;
+    var s = Math.sin(rad);
+    out[0] = s * axis[0];
+    out[1] = s * axis[1];
+    out[2] = s * axis[2];
+    out[3] = Math.cos(rad);
+    return out;
+};
+
+/**
+ * Adds two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {quat} out
+ */
+quat.add = vec4.add;
+
+/**
+ * Multiplies two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {quat} out
+ */
+quat.mul = quat.multiply = function(out, a, b) {
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+
+    out[0] = ax * bw + aw * bx + ay * bz - az * by;
+    out[1] = ay * bw + aw * by + az * bx - ax * bz;
+    out[2] = az * bw + aw * bz + ax * by - ay * bx;
+    out[3] = aw * bw - ax * bx - ay * by - az * bz;
+    return out;
+};
+
+/**
+ * Scales a quat by a scalar number
+ *
+ * @param {quat} out the receiving vector
+ * @param {quat} a the vector to scale
+ * @param {quat} b amount to scale the vector by
+ * @returns {quat} out
+ */
+quat.scale = vec4.scale;
+
+/**
+ * Rotates a quaternion by the given angle around the X axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateX = function (out, a, rad) {
+    rad *= 0.5; 
+
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bx = Math.sin(rad), bw = Math.cos(rad);
+
+    out[0] = ax * bw + aw * bx;
+    out[1] = ay * bw + az * bx;
+    out[2] = az * bw - ay * bx;
+    out[3] = aw * bw - ax * bx;
+    return out;
+};
+
+/**
+ * Rotates a quaternion by the given angle around the X axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateY = function (out, a, rad) {
+    rad *= 0.5; 
+
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        by = Math.sin(rad), bw = Math.cos(rad);
+
+    out[0] = ax * bw - az * by;
+    out[1] = ay * bw + aw * by;
+    out[2] = az * bw + ax * by;
+    out[3] = aw * bw - ay * by;
+    return out;
+};
+
+/**
+ * Rotates a quaternion by the given angle around the X axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateZ = function (out, a, rad) {
+    rad *= 0.5; 
+
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bz = Math.sin(rad), bw = Math.cos(rad);
+
+    out[0] = ax * bw + ay * bz;
+    out[1] = ay * bw - ax * bz;
+    out[2] = az * bw + aw * bz;
+    out[3] = aw * bw - az * bz;
+    return out;
+};
+
+/**
+ * Calculates the W component of a quat from the X, Y, and Z components.
+ * Assumes that quaternion is 1 unit in length.
+ * Any existing W component will be ignored.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate W component of
+ * @returns {quat} out
+ */
+quat.calculateW = function (out, a) {
+    var x = a[0], y = a[1], z = a[2];
+
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    out[3] = -Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
+    return out;
+};
+
+/**
+ * Caclulates the dot product of two quat's
+ *
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+quat.dot = vec4.dot;
+
+/**
+ * Performs a linear interpolation between two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {quat} out
+ */
+quat.lerp = vec4.lerp;
+
+/**
+ * Performs a spherical linear interpolation between two quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {quat} out
+ */
+quat.slerp = function (out, a, b, t) {
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bx = b[0], by = b[1], bz = b[2], bw = a[3];
+
+    var cosHalfTheta = ax * bx + ay * by + az * bz + aw * bw,
+        halfTheta,
+        sinHalfTheta,
+        ratioA,
+        ratioB;
+
+    if (Math.abs(cosHalfTheta) >= 1.0) {
+        if (out !== a) {
+            out[0] = ax;
+            out[1] = ay;
+            out[2] = az;
+            out[3] = aw;
+        }
+        return out;
+    }
+
+    halfTheta = Math.acos(cosHalfTheta);
+    sinHalfTheta = Math.sqrt(1.0 - cosHalfTheta * cosHalfTheta);
+
+    if (Math.abs(sinHalfTheta) < 0.001) {
+        out[0] = (ax * 0.5 + bx * 0.5);
+        out[1] = (ay * 0.5 + by * 0.5);
+        out[2] = (az * 0.5 + bz * 0.5);
+        out[3] = (aw * 0.5 + bw * 0.5);
+        return out;
+    }
+
+    ratioA = Math.sin((1 - t) * halfTheta) / sinHalfTheta;
+    ratioB = Math.sin(t * halfTheta) / sinHalfTheta;
+
+    out[0] = (ax * ratioA + bx * ratioB);
+    out[1] = (ay * ratioA + by * ratioB);
+    out[2] = (az * ratioA + bz * ratioB);
+    out[3] = (aw * ratioA + bw * ratioB);
+
+    return out;
+};
+
+/**
+ * Calculates the inverse of a quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate inverse of
+ * @returns {quat} out
+ */
+quat.invert = function(out, a) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
+        invDot = dot ? 1.0/dot : 0;
+    
+    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
+
+    out[0] = -a0*invDot;
+    out[1] = -a1*invDot;
+    out[2] = -a2*invDot;
+    out[3] = a3*invDot;
+    return out;
+};
+
+/**
+ * Calculates the conjugate of a quat
+ * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate conjugate of
+ * @returns {quat} out
+ */
+quat.conjugate = function (out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Caclulates the length of a quat
+ *
+ * @param {quat} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+quat.len = quat.length = vec4.length;
+
+/**
+ * Caclulates the squared length of a quat
+ *
+ * @param {quat} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+quat.sqrLen = quat.squaredLength = vec4.squaredLength;
+
+/**
+ * Normalize a quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quaternion to normalize
+ * @returns {quat} out
+ */
+quat.normalize = vec4.normalize;
+
+/**
+ * Returns a string representation of a quatenion
+ *
+ * @param {quat} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+quat.str = function (a) {
+    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.quat = quat;
+}
+;
+
+
+
+
+
+
+
+
+
+
+  })(shim.exports);
+})();
+
+},{}],9:[function(require,module,exports){
+module.exports = inherits
+
+function inherits (c, p, proto) {
+  proto = proto || {}
+  var e = {}
+  ;[c.prototype, proto].forEach(function (s) {
+    Object.getOwnPropertyNames(s).forEach(function (k) {
+      e[k] = Object.getOwnPropertyDescriptor(s, k)
+    })
+  })
+  c.prototype = Object.create(p.prototype, e)
+  c.super = p
+}
+
+//function Child () {
+//  Child.super.call(this)
+//  console.error([this
+//                ,this.constructor
+//                ,this.constructor === Child
+//                ,this.constructor.super === Parent
+//                ,Object.getPrototypeOf(this) === Child.prototype
+//                ,Object.getPrototypeOf(Object.getPrototypeOf(this))
+//                 === Parent.prototype
+//                ,this instanceof Child
+//                ,this instanceof Parent])
+//}
+//function Parent () {}
+//inherits(Child, Parent)
+//new Child
+
+},{}],10:[function(require,module,exports){
+var lock = require('pointer-lock')
+  , drag = require('drag-stream')
+  , full = require('fullscreen')
+
+var EE = require('events').EventEmitter
+  , Stream = require('stream').Stream
+
+module.exports = interact
+
+function interact(el, skiplock) {
+  var ee = new EE
+    , internal
+
+  if(!lock.available() || skiplock) {
+    internal = usedrag(el)
+  } else {
+    internal = uselock(el, politelydeclined)
+  }
+
+  ee.release = function() { internal.release && internal.release() }
+  ee.request = function() { internal.request && internal.request() }
+  ee.destroy = function() { internal.destroy && internal.destroy() }
+  ee.pointerAvailable = function() { return lock.available() }
+  ee.fullscreenAvailable = function() { return full.available() }
+
+  forward()
+
+  return ee
+
+  function politelydeclined() {
+    ee.emit('opt-out')
+    internal.destroy()
+    internal = usedrag(el)
+    forward()
+  }
+
+  function forward() {
+    internal.on('attain', function(stream) {
+      ee.emit('attain', stream)
+    })
+
+    internal.on('release', function() {
+      ee.emit('release')
+    })
+  }
+}
+
+function uselock(el, declined) {
+  var pointer = lock(el)
+    , fs = full(el)
+
+  pointer.on('needs-fullscreen', function() {
+    fs.once('attain', function() {
+      pointer.request()
+    })
+    fs.request()
+  })
+
+  pointer.on('error', declined)
+
+  return pointer
+}
+
+function usedrag(el) {
+  var ee = new EE
+    , d = drag(el)
+    , stream
+
+  d.paused = true
+
+  d.on('resume', function() {
+    stream = new Stream
+    stream.readable = true
+    stream.initial = null
+  })
+
+  d.on('data', function(datum) {
+    if(!stream) {
+      stream = new Stream
+      stream.readable = true
+      stream.initial = null
+    }
+
+    if(!stream.initial) {
+      stream.initial = {
+        x: datum.dx
+      , y: datum.dy
+      , t: datum.dt
+      }
+      return ee.emit('attain', stream)
+    }
+
+    if(stream.paused) {
+      ee.emit('release')
+      stream.emit('end')
+      stream.readable = false
+      stream.emit('close')
+      stream = null
+    }
+
+    stream.emit('data', datum)
+  })
+
+  return ee
+}
+
+},{"drag-stream":11,"events":70,"fullscreen":17,"pointer-lock":18,"stream":86}],11:[function(require,module,exports){
+module.exports = dragstream
+
+var Stream = require('stream')
+  , read = require('domnode-dom').createReadStream
+  , through = require('through')
+
+function dragstream(el) {
+  var body = el.ownerDocument.body
+    , down = read(el, 'mousedown')
+    , up = read(body, 'mouseup', false)
+    , move = read(body, 'mousemove', false)
+    , anchor = {x: 0, y: 0, t: 0}
+    , drag = through(on_move)
+
+  // default to "paused"
+  drag.pause()
+
+  down.on('data', on_down)
+  up.on('data', on_up)
+
+  return move.pipe(drag)
+
+  // listeners:
+
+  function on_move(ev) {
+    if(drag.paused) return
+
+    drag.emit('data', datum(
+        ev.screenX - anchor.x
+      , ev.screenY - anchor.y
+      , +new Date
+    ))
+
+    anchor.x = ev.screenX
+    anchor.y = ev.screenY
+  }
+
+  function on_down(ev) {
+    anchor.x = ev.screenX
+    anchor.y = ev.screenY
+    anchor.t = +new Date
+    drag.resume()
+    drag.emit('data', datum(
+        anchor.x
+      , anchor.y
+      , anchor.t
+    ))
+  }
+
+  function on_up(ev) {
+    drag.pause()
+    drag.emit('data', datum(
+        ev.screenX - anchor.x
+      , ev.screenY - anchor.y
+      , +new Date
+    ))
+  }
+
+  function datum(dx, dy, when) {
+    return {
+      dx: dx
+    , dy: dy
+    , dt: when - anchor.t
+    }
+  }
+}
+
+},{"domnode-dom":12,"stream":86,"through":16}],12:[function(require,module,exports){
+module.exports = require('./lib/index')
+
+},{"./lib/index":13}],13:[function(require,module,exports){
+var WriteStream = require('./writable')
+  , ReadStream = require('./readable')
+  , DOMStream = {}
+
+DOMStream.WriteStream = WriteStream
+DOMStream.ReadStream = ReadStream
+
+DOMStream.createAppendStream = function(el, mimetype) {
+  return new DOMStream.WriteStream(
+      el
+    , DOMStream.WriteStream.APPEND
+    , mimetype
+  )
+}
+
+DOMStream.createWriteStream = function(el, mimetype) {
+  return new DOMStream.WriteStream(
+      el
+    , DOMStream.WriteStream.WRITE
+    , mimetype
+  )
+}
+
+DOMStream.createReadStream =
+DOMStream.createEventStream = function(el, type, preventDefault) {
+  preventDefault = preventDefault === undefined ? true : preventDefault
+
+  return new DOMStream.ReadStream(
+      el
+    , type
+    , preventDefault
+  )
+}
+
+module.exports = DOMStream
+
+
+},{"./readable":14,"./writable":15}],14:[function(require,module,exports){
+module.exports = DOMStream
+
+var Stream = require('stream').Stream
+
+var listener = function(el, type, onmsg) {
+  return el.addEventListener(type, onmsg, false)
+}
+
+if(typeof $ !== 'undefined')
+  listener = function(el, type, onmsg) {
+    return el = $(el)[type](onmsg)
+  }
+
+if(typeof document !== 'undefined' && !document.createElement('div').addEventListener)
+  listener = function(el, type, onmsg) {
+    return el.attachEvent('on'+type, onmsg)
+  }
+
+function DOMStream(el, eventType, shouldPreventDefault) {
+  this.el = el
+  this.eventType = eventType
+  this.shouldPreventDefault = shouldPreventDefault
+
+  var self = this
+
+  if(el && this.eventType)
+    listener(
+        this.el
+      , this.eventType
+      , function() { return self.listen.apply(self, arguments) }
+    )
+
+  Stream.call(this)
+}
+
+var cons = DOMStream
+  , proto = cons.prototype = Object.create(Stream.prototype)
+
+proto.constructor = cons
+
+proto.listen = function(ev) {
+  if(this.shouldPreventDefault)
+    ev.preventDefault ? ev.preventDefault() : (ev.returnValue = false)
+
+  var collectData =
+    this.eventType === 'submit' ||
+    this.eventType === 'change' ||
+    this.eventType === 'keydown' ||
+    this.eventType === 'keyup' ||
+    this.eventType === 'input'
+
+  if(collectData) {
+    if(this.el.tagName.toUpperCase() === 'FORM')
+      return this.handleFormSubmit(ev)
+
+    return this.emit('data', valueFromElement(this.el))
+  }
+
+  this.emit('data', ev)
+}
+
+proto.handleFormSubmit = function(ev) {
+  var elements = []
+
+  if(this.el.querySelectorAll) {
+    elements = this.el.querySelectorAll('input,textarea,select')
+  } else {
+    var inputs = {'INPUT':true, 'TEXTAREA':true, 'SELECT':true}
+
+    var recurse = function(el) {
+      for(var i = 0, len = el.childNodes.length; i < len; ++i) {
+        if(el.childNodes[i].tagName) {
+          if(inputs[el.childNodes[i].tagName.toUpperCase()]) {
+            elements.push(el)
+          } else {
+            recurse(el.childNodes[i])
+          }
+        }
+      }
+    }
+
+    recurse(this.el)
+  }
+
+  var output = {}
+    , attr
+    , val
+
+  for(var i = 0, len = elements.length; i < len; ++i) {
+    attr = elements[i].getAttribute('name')
+    val = valueFromElement(elements[i])
+
+    if(val !== null) {
+      output[attr] = val
+    }
+  }
+
+  return this.emit('data', output)
+}
+
+function valueFromElement(el) {
+  switch(el.getAttribute('type')) {
+    case 'radio':
+      return el.checked ? el.value : null
+    case 'checkbox':
+      return 'data', el.checked
+  }
+  return el.value
+}
+
+},{"stream":86}],15:[function(require,module,exports){
+module.exports = DOMStream
+
+var Stream = require('stream').Stream
+
+function DOMStream(el, mode, mimetype) {
+  this.el = el
+  this.mode = mode
+  this.mimetype = mimetype || 'text/html'
+
+  Stream.call(this)
+}
+
+var cons = DOMStream
+  , proto = cons.prototype = Object.create(Stream.prototype)
+
+proto.constructor = cons
+
+cons.APPEND = 0
+cons.WRITE = 1
+
+proto.writable = true
+
+proto.setMimetype = function(mime) {
+  this.mimetype = mime
+}
+
+proto.write = function(data) {
+  var result = (this.mode === cons.APPEND) ? this.append(data) : this.insert(data)
+  this.emit('data', this.el.childNodes)
+  return result
+}
+
+proto.end = function() {
+
+}
+
+proto.insert = function(data) {
+  this.el.innerHTML = ''
+  return this.append(data)
+}
+
+proto.append = function(data) {
+  var result = this[this.resolveMimetypeHandler()](data)
+
+  for(var i = 0, len = result.length; i < len; ++i) {
+    this.el.appendChild(result[i])
+  }
+
+  return true
+}
+
+proto.resolveMimetypeHandler = function() {
+  var type = this.mimetype.replace(/(\/\w)/, function(x) {
+    return x.slice(1).toUpperCase()
+  })
+  type = type.charAt(0).toUpperCase() + type.slice(1)
+
+  return 'construct'+type
+}
+
+proto.constructTextHtml = function(data) {
+  var isTableFragment = /(tr|td|th)/.test(data) && !/table/.test(data)
+    , div
+
+  if(isTableFragment) {
+    // wuh-oh.
+    div = document.createElement('table')
+  }
+
+  div = div || document.createElement('div')
+  div.innerHTML = data 
+
+  return [].slice.call(div.childNodes)
+}
+
+proto.constructTextPlain = function(data) {
+  var textNode = document.createTextNode(data)
+
+  return [textNode]
+}
+
+},{"stream":86}],16:[function(require,module,exports){
+(function (process){
+var Stream = require('stream')
+
+// through
+//
+// a stream that does nothing but re-emit the input.
+// useful for aggregating a series of changing but not ending streams into one stream)
+
+
+
+exports = module.exports = through
+through.through = through
+
+//create a readable writable stream.
+
+function through (write, end) {
+  write = write || function (data) { this.emit('data', data) }
+  end = end || function () { this.emit('end') }
+
+  var ended = false, destroyed = false
+  var stream = new Stream(), buffer = []
+  stream.buffer = buffer
+  stream.readable = stream.writable = true
+  stream.paused = false
+  stream.write = function (data) {
+    write.call(this, data)
+    return !stream.paused
+  }
+
+  function drain() {
+    while(buffer.length && !stream.paused) {
+      var data = buffer.shift()
+      if(null === data)
+        return stream.emit('end')
+      else
+        stream.emit('data', data)
+    }
+  }
+
+  stream.queue = function (data) {
+    buffer.push(data)
+    drain()
+  }
+
+  //this will be registered as the first 'end' listener
+  //must call destroy next tick, to make sure we're after any
+  //stream piped from here.
+  //this is only a problem if end is not emitted synchronously.
+  //a nicer way to do this is to make sure this is the last listener for 'end'
+
+  stream.on('end', function () {
+    stream.readable = false
+    if(!stream.writable)
+      process.nextTick(function () {
+        stream.destroy()
+      })
+  })
+
+  function _end () {
+    stream.writable = false
+    end.call(stream)
+    if(!stream.readable)
+      stream.destroy()
+  }
+
+  stream.end = function (data) {
+    if(ended) return
+    ended = true
+    if(arguments.length) stream.write(data)
+    _end() // will emit or queue
+  }
+
+  stream.destroy = function () {
+    if(destroyed) return
+    destroyed = true
+    ended = true
+    buffer.length = 0
+    stream.writable = stream.readable = false
+    stream.emit('close')
+  }
+
+  stream.pause = function () {
+    if(stream.paused) return
+    stream.paused = true
+    stream.emit('pause')
+  }
+  stream.resume = function () {
+    if(stream.paused) {
+      stream.paused = false
+    }
+    drain()
+    //may have become paused again,
+    //as drain emits 'data'.
+    if(!stream.paused)
+      stream.emit('drain')
+  }
+  return stream
+}
+
+
+}).call(this,require('_process'))
+},{"_process":74,"stream":86}],17:[function(require,module,exports){
+module.exports = fullscreen
+fullscreen.available = available
+
+var EE = require('events').EventEmitter
+
+function available() {
+  return !!shim(document.body)
+}
+
+function fullscreen(el) {
+  var ael = el.addEventListener || el.attachEvent
+    , doc = el.ownerDocument
+    , body = doc.body
+    , rfs = shim(el)
+    , ee = new EE
+
+  var vendors = ['', 'webkit', 'moz', 'ms', 'o']
+
+  for(var i = 0, len = vendors.length; i < len; ++i) {
+    ael.call(doc, vendors[i]+'fullscreenchange', onfullscreenchange)
+    ael.call(doc, vendors[i]+'fullscreenerror', onfullscreenerror)
+  }
+
+  ee.release = release
+  ee.request = request
+  ee.target = fullscreenelement
+
+  if(!shim) {
+    setTimeout(function() {
+      ee.emit('error', new Error('fullscreen is not supported'))
+    }, 0)
+  }
+  return ee
+
+  function onfullscreenchange() {
+    if(!fullscreenelement()) {
+      return ee.emit('release')
+    }
+    ee.emit('attain')
+  }
+
+  function onfullscreenerror() {
+    ee.emit('error')
+  }
+
+  function request() {
+    return rfs.call(el)
+  }
+
+  function release() {
+    (el.exitFullscreen ||
+    el.exitFullscreen ||
+    el.webkitExitFullScreen ||
+    el.webkitExitFullscreen ||
+    el.mozExitFullScreen ||
+    el.mozExitFullscreen ||
+    el.msExitFullScreen ||
+    el.msExitFullscreen ||
+    el.oExitFullScreen ||
+    el.oExitFullscreen).call(el)
+  } 
+
+  function fullscreenelement() {
+    return 0 ||
+      doc.fullScreenElement ||
+      doc.fullscreenElement ||
+      doc.webkitFullScreenElement ||
+      doc.webkitFullscreenElement ||
+      doc.mozFullScreenElement ||
+      doc.mozFullscreenElement ||
+      doc.msFullScreenElement ||
+      doc.msFullscreenElement ||
+      doc.oFullScreenElement ||
+      doc.oFullscreenElement ||
+      null
+  }
+}
+
+function shim(el) {
+  return (el.requestFullscreen ||
+    el.webkitRequestFullscreen ||
+    el.webkitRequestFullScreen ||
+    el.mozRequestFullscreen ||
+    el.mozRequestFullScreen ||
+    el.msRequestFullscreen ||
+    el.msRequestFullScreen ||
+    el.oRequestFullscreen ||
+    el.oRequestFullScreen)
+}
+
+},{"events":70}],18:[function(require,module,exports){
+module.exports = pointer
+
+pointer.available = available
+
+var EE = require('events').EventEmitter
+  , Stream = require('stream').Stream
+
+function available() {
+  return !!shim(document.body)
+}
+
+function pointer(el) {
+  var ael = el.addEventListener || el.attachEvent
+    , rel = el.removeEventListener || el.detachEvent
+    , doc = el.ownerDocument
+    , body = doc.body
+    , rpl = shim(el) 
+    , out = {dx: 0, dy: 0, dt: 0}
+    , ee = new EE
+    , stream = null
+    , lastPageX, lastPageY
+    , needsFullscreen = false
+    , mouseDownMS
+
+  ael.call(el, 'mousedown', onmousedown, false)
+  ael.call(el, 'mouseup', onmouseup, false)
+  ael.call(body, 'mousemove', onmove, false)
+
+  var vendors = ['', 'webkit', 'moz', 'ms', 'o']
+
+  for(var i = 0, len = vendors.length; i < len; ++i) {
+    ael.call(doc, vendors[i]+'pointerlockchange', onpointerlockchange)
+    ael.call(doc, vendors[i]+'pointerlockerror', onpointerlockerror)
+  }
+
+  ee.release = release
+  ee.target = pointerlockelement
+  ee.request = onmousedown
+  ee.destroy = function() {
+    rel.call(el, 'mouseup', onmouseup, false)
+    rel.call(el, 'mousedown', onmousedown, false)
+    rel.call(el, 'mousemove', onmove, false)
+  }
+
+  if(!shim) {
+    setTimeout(function() {
+      ee.emit('error', new Error('pointer lock is not supported'))
+    }, 0)
+  }
+  return ee
+
+  function onmousedown(ev) {
+    if(pointerlockelement()) {
+      return
+    }
+    mouseDownMS = +new Date
+    rpl.call(el)
+  }
+
+  function onmouseup(ev) {
+    if(!needsFullscreen) {
+      return
+    }
+
+    ee.emit('needs-fullscreen')
+    needsFullscreen = false
+  }
+
+  function onpointerlockchange(ev) {
+    if(!pointerlockelement()) {
+      if(stream) release()
+      return
+    }
+
+    stream = new Stream
+    stream.readable = true
+    stream.initial = {x: lastPageX, y: lastPageY, t: Date.now()}
+
+    ee.emit('attain', stream)
+  }
+
+  function onpointerlockerror(ev) {
+    var dt = +(new Date) - mouseDownMS
+    if(dt < 100) {
+      // we errored immediately, we need to do fullscreen first.
+      needsFullscreen = true
+      return
+    }
+
+    if(stream) {
+      stream.emit('error', ev)
+      stream = null
+    }
+  }
+
+  function release() {
+    ee.emit('release')
+
+    if(stream) {
+      stream.emit('end')
+      stream.readable = false
+      stream.emit('close')
+      stream = null
+    }
+
+    var pel = pointerlockelement()
+    if(!pel) {
+      return
+    }
+
+    (doc.exitPointerLock ||
+    doc.mozExitPointerLock ||
+    doc.webkitExitPointerLock ||
+    doc.msExitPointerLock ||
+    doc.oExitPointerLock).call(doc)
+  }
+
+  function onmove(ev) {
+    lastPageX = ev.pageX
+    lastPageY = ev.pageY
+
+    if(!stream) return
+
+    // we're reusing a single object
+    // because I'd like to avoid piling up
+    // a ton of objects for the garbage
+    // collector.
+    out.dx =
+      ev.movementX || ev.webkitMovementX ||
+      ev.mozMovementX || ev.msMovementX ||
+      ev.oMovementX || 0
+
+    out.dy = 
+      ev.movementY || ev.webkitMovementY ||
+      ev.mozMovementY || ev.msMovementY ||
+      ev.oMovementY || 0
+
+    out.dt = Date.now() - stream.initial.t
+
+    ee.emit('data', out)
+    stream.emit('data', out)
+  }
+
+  function pointerlockelement() {
+    return 0 ||
+      doc.pointerLockElement ||
+      doc.mozPointerLockElement ||
+      doc.webkitPointerLockElement ||
+      doc.msPointerLockElement ||
+      doc.oPointerLockElement ||
+      null
+  }
+}
+
+function shim(el) {
+  return el.requestPointerLock ||
+    el.webkitRequestPointerLock ||
+    el.mozRequestPointerLock ||
+    el.msRequestPointerLock ||
+    el.oRequestPointerLock ||
+    null
+}
+
+},{"events":70,"stream":86}],19:[function(require,module,exports){
+var ever = require('ever')
+  , vkey = require('vkey')
+  , max = Math.max
+
+module.exports = function(el, bindings, state) {
+  if(bindings === undefined || !el.ownerDocument) {
+    state = bindings
+    bindings = el
+    el = this.document.body
+  }
+
+  var ee = ever(el)
+    , measured = {}
+    , enabled = true
+
+  state = state || {}
+
+  // always initialize the state.
+  for(var key in bindings) {
+    if(bindings[key] === 'enabled' ||
+       bindings[key] === 'enable' ||
+       bindings[key] === 'disable' ||
+       bindings[key] === 'destroy') {
+      throw new Error(bindings[key]+' is reserved')
+    }
+    state[bindings[key]] = 0
+    measured[key] = 1
+  }
+
+  ee.on('keyup', wrapped(onoff(kb, false)))
+  ee.on('keydown', wrapped(onoff(kb, true)))
+  ee.on('mouseup', wrapped(onoff(mouse, false)))
+  ee.on('mousedown', wrapped(onoff(mouse, true)))
+
+  state.enabled = function() {
+    return enabled
+  }
+
+  state.enable = enable_disable(true)
+  state.disable = enable_disable(false)
+  state.destroy = function() {
+    ee.removeAllListeners()
+  } 
+  return state
+
+  function clear() {
+    // always initialize the state.
+    for(var key in bindings) {
+      state[bindings[key]] = 0
+      measured[key] = 1
+    }
+  }
+
+  function enable_disable(on_or_off) {
+    return function() {
+      clear()
+      enabled = on_or_off
+      return this
+    }
+  }
+
+  function wrapped(fn) {
+    return function(ev) {
+      if(enabled) {
+        ev.preventDefault()
+        fn(ev)
+      } else {
+        return
+      }
+    }
+  }
+
+  function onoff(find, on_or_off) {
+    return function(ev) {
+      var key = find(ev)
+        , binding = bindings[key]
+
+      if(binding) {
+        state[binding] += on_or_off ? max(measured[key]--, 0) : -(measured[key] = 1)
+
+        if(!on_or_off && state[binding] < 0) {
+          state[binding] = 0
+        }
+      }
+    }
+  }
+
+  function mouse(ev) {
+    return '<mouse '+ev.which+'>'
+  }
+
+  function kb(ev) {
+    return vkey[ev.keyCode] || ev.char
+  }
+}
+
+},{"ever":20,"vkey":23}],20:[function(require,module,exports){
+var EventEmitter = require('events').EventEmitter;
+
+module.exports = function (elem) {
+    return new Ever(elem);
+};
+
+function Ever (elem) {
+    this.element = elem;
+}
+
+Ever.prototype = new EventEmitter;
+
+Ever.prototype.on = function (name, cb, useCapture) {
+    if (!this._events) this._events = {};
+    if (!this._events[name]) this._events[name] = [];
+    this._events[name].push(cb);
+    this.element.addEventListener(name, cb, useCapture || false);
+
+    return this;
+};
+Ever.prototype.addListener = Ever.prototype.on;
+
+Ever.prototype.removeListener = function (type, listener, useCapture) {
+    if (!this._events) this._events = {};
+    this.element.removeEventListener(type, listener, useCapture || false);
+    
+    var xs = this.listeners(type);
+    var ix = xs.indexOf(listener);
+    if (ix >= 0) xs.splice(ix, 1);
+
+    return this;
+};
+
+Ever.prototype.removeAllListeners = function (type) {
+    var self = this;
+    function removeAll (t) {
+        var xs = self.listeners(t);
+        for (var i = 0; i < xs.length; i++) {
+            self.removeListener(t, xs[i]);
+        }
+    }
+    
+    if (type) {
+        removeAll(type)
+    }
+    else if (self._events) {
+        for (var key in self._events) {
+            if (key) removeAll(key);
+        }
+    }
+    return EventEmitter.prototype.removeAllListeners.apply(self, arguments);
+}
+
+var initSignatures = require('./init.json');
+
+Ever.prototype.emit = function (name, ev) {
+    if (typeof name === 'object') {
+        ev = name;
+        name = ev.type;
+    }
+    
+    if (!isEvent(ev)) {
+        var type = Ever.typeOf(name);
+        
+        var opts = ev || {};
+        if (opts.type === undefined) opts.type = name;
+        
+        ev = document.createEvent(type + 's');
+        var init = typeof ev['init' + type] === 'function'
+            ? 'init' + type : 'initEvent'
+        ;
+        
+        var sig = initSignatures[init];
+        var used = {};
+        var args = [];
+        
+        for (var i = 0; i < sig.length; i++) {
+            var key = sig[i];
+            args.push(opts[key]);
+            used[key] = true;
+        }
+        ev[init].apply(ev, args);
+        
+        // attach remaining unused options to the object
+        for (var key in opts) {
+            if (!used[key]) ev[key] = opts[key];
+        }
+    }
+    return this.element.dispatchEvent(ev);
+};
+
+function isEvent (ev) {
+    var s = Object.prototype.toString.call(ev);
+    return /\[object \S+Event\]/.test(s);
+}
+
+Ever.types = require('./types.json');
+Ever.typeOf = (function () {
+    var types = {};
+    for (var key in Ever.types) {
+        var ts = Ever.types[key];
+        for (var i = 0; i < ts.length; i++) {
+            types[ts[i]] = key;
+        }
+    }
+    
+    return function (name) {
+        return types[name] || 'Event';
+    };
+})();;
+
+},{"./init.json":21,"./types.json":22,"events":70}],21:[function(require,module,exports){
+module.exports={
+  "initEvent" : [
+    "type",
+    "canBubble", 
+    "cancelable"
+  ],
+  "initUIEvent" : [
+    "type",
+    "canBubble", 
+    "cancelable", 
+    "view", 
+    "detail"
+  ],
+  "initMouseEvent" : [
+    "type",
+    "canBubble", 
+    "cancelable", 
+    "view", 
+    "detail", 
+    "screenX", 
+    "screenY", 
+    "clientX", 
+    "clientY", 
+    "ctrlKey", 
+    "altKey", 
+    "shiftKey", 
+    "metaKey", 
+    "button",
+    "relatedTarget"
+  ],
+  "initMutationEvent" : [
+    "type",
+    "canBubble", 
+    "cancelable", 
+    "relatedNode", 
+    "prevValue", 
+    "newValue", 
+    "attrName", 
+    "attrChange"
+  ]
+}
+
+},{}],22:[function(require,module,exports){
+module.exports={
+  "MouseEvent" : [
+    "click",
+    "mousedown",
+    "mouseup",
+    "mouseover",
+    "mousemove",
+    "mouseout"
+  ],
+  "KeyBoardEvent" : [
+    "keydown",
+    "keyup",
+    "keypress"
+  ],
+  "MutationEvent" : [
+    "DOMSubtreeModified",
+    "DOMNodeInserted",
+    "DOMNodeRemoved",
+    "DOMNodeRemovedFromDocument",
+    "DOMNodeInsertedIntoDocument",
+    "DOMAttrModified",
+    "DOMCharacterDataModified"
+  ],
+  "HTMLEvent" : [
+    "load",
+    "unload",
+    "abort",
+    "error",
+    "select",
+    "change",
+    "submit",
+    "reset",
+    "focus",
+    "blur",
+    "resize",
+    "scroll"
+  ],
+  "UIEvent" : [
+    "DOMFocusIn",
+    "DOMFocusOut",
+    "DOMActivate"
+  ]
+}
+
+},{}],23:[function(require,module,exports){
+var ua = typeof window !== 'undefined' ? window.navigator.userAgent : ''
+  , isOSX = /OS X/.test(ua)
+  , isOpera = /Opera/.test(ua)
+  , maybeFirefox = !/like Gecko/.test(ua) && !isOpera
+
+var i, output = module.exports = {
+  0:  isOSX ? '<menu>' : '<UNK>'
+, 1:  '<mouse 1>'
+, 2:  '<mouse 2>'
+, 3:  '<break>'
+, 4:  '<mouse 3>'
+, 5:  '<mouse 4>'
+, 6:  '<mouse 5>'
+, 8:  '<backspace>'
+, 9:  '<tab>'
+, 12: '<clear>'
+, 13: '<enter>'
+, 16: '<shift>'
+, 17: '<control>'
+, 18: '<alt>'
+, 19: '<pause>'
+, 20: '<caps-lock>'
+, 21: '<ime-hangul>'
+, 23: '<ime-junja>'
+, 24: '<ime-final>'
+, 25: '<ime-kanji>'
+, 27: '<escape>'
+, 28: '<ime-convert>'
+, 29: '<ime-nonconvert>'
+, 30: '<ime-accept>'
+, 31: '<ime-mode-change>'
+, 27: '<escape>'
+, 32: '<space>'
+, 33: '<page-up>'
+, 34: '<page-down>'
+, 35: '<end>'
+, 36: '<home>'
+, 37: '<left>'
+, 38: '<up>'
+, 39: '<right>'
+, 40: '<down>'
+, 41: '<select>'
+, 42: '<print>'
+, 43: '<execute>'
+, 44: '<snapshot>'
+, 45: '<insert>'
+, 46: '<delete>'
+, 47: '<help>'
+, 91: '<meta>'  // meta-left -- no one handles left and right properly, so we coerce into one.
+, 92: '<meta>'  // meta-right
+, 93: isOSX ? '<meta>' : '<menu>'      // chrome,opera,safari all report this for meta-right (osx mbp).
+, 95: '<sleep>'
+, 106: '<num-*>'
+, 107: '<num-+>'
+, 108: '<num-enter>'
+, 109: '<num-->'
+, 110: '<num-.>'
+, 111: '<num-/>'
+, 144: '<num-lock>'
+, 145: '<scroll-lock>'
+, 160: '<shift-left>'
+, 161: '<shift-right>'
+, 162: '<control-left>'
+, 163: '<control-right>'
+, 164: '<alt-left>'
+, 165: '<alt-right>'
+, 166: '<browser-back>'
+, 167: '<browser-forward>'
+, 168: '<browser-refresh>'
+, 169: '<browser-stop>'
+, 170: '<browser-search>'
+, 171: '<browser-favorites>'
+, 172: '<browser-home>'
+
+  // ff/osx reports '<volume-mute>' for '-'
+, 173: isOSX && maybeFirefox ? '-' : '<volume-mute>'
+, 174: '<volume-down>'
+, 175: '<volume-up>'
+, 176: '<next-track>'
+, 177: '<prev-track>'
+, 178: '<stop>'
+, 179: '<play-pause>'
+, 180: '<launch-mail>'
+, 181: '<launch-media-select>'
+, 182: '<launch-app 1>'
+, 183: '<launch-app 2>'
+, 186: ';'
+, 187: '='
+, 188: ','
+, 189: '-'
+, 190: '.'
+, 191: '/'
+, 192: '`'
+, 219: '['
+, 220: '\\'
+, 221: ']'
+, 222: "'"
+, 223: '<meta>'
+, 224: '<meta>'       // firefox reports meta here.
+, 226: '<alt-gr>'
+, 229: '<ime-process>'
+, 231: isOpera ? '`' : '<unicode>'
+, 246: '<attention>'
+, 247: '<crsel>'
+, 248: '<exsel>'
+, 249: '<erase-eof>'
+, 250: '<play>'
+, 251: '<zoom>'
+, 252: '<no-name>'
+, 253: '<pa-1>'
+, 254: '<clear>'
+}
+
+for(i = 58; i < 65; ++i) {
+  output[i] = String.fromCharCode(i)
+}
+
+// 0-9
+for(i = 48; i < 58; ++i) {
+  output[i] = (i - 48)+''
+}
+
+// A-Z
+for(i = 65; i < 91; ++i) {
+  output[i] = String.fromCharCode(i)
+}
+
+// num0-9
+for(i = 96; i < 106; ++i) {
+  output[i] = '<num-'+(i - 96)+'>'
+}
+
+// F1-F24
+for(i = 112; i < 136; ++i) {
+  output[i] = 'F'+(i-111)
+}
+
+},{}],24:[function(require,module,exports){
+module.exports = pin
+
+var pins = {}
+  , stack_holder = {}
+  , pin_holder
+
+function make_pin_for(name, obj) {
+  var container = document.createElement('div')
+    , header = document.createElement('h4')
+    , body = document.createElement('pre')
+
+  container.style.background = 'white'
+  container.style.marginBottom = '4px'
+  container.appendChild(header)
+  container.appendChild(body)
+  header.textContents = header.innerText = obj && obj.repr ? obj.repr() : name
+  body.style.padding = '8px'
+
+
+  if(!pin_holder) {
+    pin_holder = document.createElement('div')
+    pin_holder.style.position = 'absolute'
+    pin_holder.style.top =
+    pin_holder.style.right = '4px'
+
+    document.body.appendChild(pin_holder)
+  }
+
+  pin_holder.appendChild(container)
+
+  return (pins[name] = pins[name] || []).push({body: body, last: -Infinity, for_object: obj}), pins[name]
+}
+
+function update_pin(item, into, retain, depth) {
+  if(!retain) into.innerHTML = ''
+  if(depth > 1) return
+  depth = depth || 0
+
+  switch(typeof item) {
+    case 'number': into.innerText += item.toFixed(3); break
+    case 'string': into.innerText += '"'+item+'"'; break
+    case 'undefined':
+    case 'object':
+      if(item) {
+        for(var key in item) if(item.hasOwnProperty(key)) {
+          into.innerText += key +':'
+          update_pin(item[key], into, true, depth+1)
+          into.innerText += '\n'
+        } 
+        break
+      }
+    case 'boolean': into.innerText += ''+item; break
+  }  
+}
+
+function pin(item, every, obj, name) {
+  if(!name) Error.captureStackTrace(stack_holder)
+  var location = name || stack_holder.stack.split('\n').slice(2)[0].replace(/^\s+at /g, '')
+    , target = pins[location] || make_pin_for(location, obj)
+    , now = Date.now()
+    , every = every || 0
+
+  if(arguments.length < 3) target = target[0]
+  else {
+    for(var i = 0, len = target.length; i < len; ++i) {
+    if(target[i].for_object === obj) {
+      target = target[i]
+      break   
+    }
+  }
+    if(i === len) {
+      pins[location].push(target = make_pin_for(location, obj))
+    }
+  }
+
+  if(now - target.last > every) {
+    update_pin(item, target.body)
+    target.last = now 
+  }
+}
+
+},{}],25:[function(require,module,exports){
+module.exports = raf
+
+var EE = require('events').EventEmitter
+  , global = typeof window === 'undefined' ? this : window
+
+var _raf =
+  global.requestAnimationFrame ||
+  global.webkitRequestAnimationFrame ||
+  global.mozRequestAnimationFrame ||
+  global.msRequestAnimationFrame ||
+  global.oRequestAnimationFrame ||
+  (global.setImmediate ? function(fn, el) {
+    setImmediate(fn)
+  } :
+  function(fn, el) {
+    setTimeout(fn, 0)
+  })
+
+function raf(el) {
+  var now = raf.now()
+    , ee = new EE
+
+  ee.pause = function() { ee.paused = true }
+  ee.resume = function() { ee.paused = false }
+
+  _raf(iter, el)
+
+  return ee
+
+  function iter(timestamp) {
+    var _now = raf.now()
+      , dt = _now - now
+    
+    now = _now
+
+    ee.emit('data', dt)
+
+    if(!ee.paused) {
+      _raf(iter, el)
+    }
+  }
+}
+
+raf.polyfill = _raf
+raf.now = function() { return Date.now() }
+
+},{"events":70}],26:[function(require,module,exports){
+module.exports = SpatialEventEmitter
+
+var slice = [].slice
+  , Tree = require('./tree')
+  , aabb = require('aabb-3d')
+
+function SpatialEventEmitter() {
+  this.root = null
+  this.infinites = {}
+}
+
+var cons = SpatialEventEmitter
+  , proto = cons.prototype
+
+proto.size = 16
+
+proto.addListener = 
+proto.addEventListener = 
+proto.on = function(event, bbox, listener) {
+  if(!finite(bbox)) {
+    (this.infinites[event] = this.infinites[event] || []).push({
+      bbox: bbox
+    , func: listener
+    })
+    return this
+  }
+
+  (this.root = this.root || this.create_root(bbox))
+    .add(event, bbox, listener)
+
+  return this
+}
+
+proto.once = function(event, bbox, listener) {
+  var self = this
+
+  self.on(event, bbox, function once() {
+    listener.apply(null, arguments)
+    self.remove(event, once)
+  })
+
+  return self
+}
+
+proto.removeListener =
+proto.removeEventListener =
+proto.remove = function(event, listener) {
+  if(this.root) {
+    this.root.remove(event, listener)
+  }
+
+  if(!this.infinites[event]) {
+    return this
+  }
+
+  for(var i = 0, len = this.infinites[event].length; i < len; ++i) {
+    if(this.infinites[event][i].func === listener) {
+      break
+    }
+  }
+
+  if(i !== len) {
+    this.infinites[event].splice(i, 1)
+  }
+
+  return this
+}
+
+proto.emit = function(event, bbox/*, ...args */) {
+  var args = slice.call(arguments, 2)
+
+  // support point emitting
+  if('0' in bbox) {
+    bbox = aabb(bbox, [0, 0, 0]) 
+  }
+
+  if(this.root) {
+    this.root.send(event, bbox, args)
+  }
+
+  if(!this.infinites[event]) {
+    return this
+  }
+
+  var list = this.infinites[event].slice()
+  for(var i = 0, len = list.length; i < len; ++i) {
+    if(list[i].bbox.intersects(bbox)) {
+      list[i].func.apply(null, args) 
+    }
+  }
+
+  return this
+}
+
+proto.rootSize = function(size) {
+  proto.size = size
+}
+
+proto.create_root = function(bbox) {
+  var self = this
+    , size = self.size
+    , base = [
+        Math.floor(bbox.x0() / size) * size
+      , Math.floor(bbox.y0() / size) * size
+      , Math.floor(bbox.z0() / size) * size
+      ]
+    , tree_bbox = new bbox.constructor(base, [size, size, size])
+
+  function OurTree(size, bbox) {
+    Tree.call(this, size, bbox, null)
+  }
+
+  OurTree.prototype = Object.create(Tree.prototype)
+  OurTree.prototype.constructor = OurTree
+  OurTree.prototype.grow = function(new_root) {
+    self.root = new_root
+  }
+  OurTree.prototype.min_size = size
+
+  return new OurTree(size, tree_bbox) 
+}
+
+function finite(bbox) {
+  return isFinite(bbox.x0()) &&
+         isFinite(bbox.x1()) &&
+         isFinite(bbox.y0()) &&
+         isFinite(bbox.y1()) &&
+         isFinite(bbox.z0()) &&
+         isFinite(bbox.z1())
+}
+
+},{"./tree":27,"aabb-3d":6}],27:[function(require,module,exports){
+module.exports = Tree
+
+var aabb = require('aabb-3d')
+
+function Tree(size, bbox, parent) {
+  this.listeners = {}
+  this.size = size
+  this.bbox = bbox
+  this.parent = parent
+  this.children = []
+}
+
+var cons = Tree
+  , proto = cons.prototype
+
+proto.add = function(event, bbox, listener) {
+  if(!this.parent && !this.contains(bbox)) {
+    return this.expand(bbox).add(event, bbox, listener)
+  }
+
+  for(var i = 0, len = this.children.length; i < len; ++i) {
+    if(this.children[i].contains(bbox)) {
+      return this.children[i].add(event, bbox, listener)
+    }
+  }
+
+  var size = this.size / 2
+
+  if(size > this.min_size && bbox.vec[0] < size && bbox.vec[1] < size && bbox.vec[2] < size) {
+    // if it fits into a child node, make that childnode
+    if(Math.floor(bbox.x0() / size) === Math.floor(bbox.x1() / size) &&
+       Math.floor(bbox.y0() / size) === Math.floor(bbox.y1() / size) &&
+       Math.floor(bbox.z0() / size) === Math.floor(bbox.z1() / size)) {
+      var inst = new this.constructor(
+          size
+        , aabb([
+              Math.floor(bbox.x0() / size) * size
+            , Math.floor(bbox.y0() / size) * size
+            , Math.floor(bbox.z0() / size) * size
+            ]
+          , [size, size, size]
+          )
+        , this
+      )
+      this.children.push(inst)
+      return inst.add(event, bbox, listener)
+    }
+  }
+
+  (this.listeners[event] = this.listeners[event] || [])
+    .push({bbox: bbox, func: listener})
+}
+
+proto.contains = function(bbox) {
+  return bbox.x0() >= this.bbox.x0() &&
+         bbox.y0() >= this.bbox.y0() &&
+         bbox.z0() >= this.bbox.z0() &&
+         bbox.x1() <= this.bbox.x1() &&
+         bbox.y1() <= this.bbox.y1() &&
+         bbox.z1() <= this.bbox.z1()
+}
+
+proto.expand = function(bbox) {
+  var size = this.size
+    , new_size = size * 2
+    , expanded = this.bbox.expand(bbox)
+    , new_i = Math.floor(bbox.x0() / size)
+    , new_j = Math.floor(bbox.y0() / size)
+    , new_k = Math.floor(bbox.z0() / size)
+    , cur_i = Math.floor(this.bbox.x0() / size)
+    , cur_j = Math.floor(this.bbox.y0() / size)
+    , cur_k = Math.floor(this.bbox.z0() / size)
+    , new_base = [
+        new_i - cur_i >= 0 ? cur_i : cur_i - 1
+      , new_j - cur_j >= 0 ? cur_j : cur_j - 1
+      , new_k - cur_k >= 0 ? cur_k : cur_k - 1
+      ].map(function(ii) { return ii * size })
+    , new_bbox = aabb(new_base, [new_size, new_size, new_size])
+    , new_root = new this.constructor(new_size, new_bbox)
+    , self = this
+
+  this.parent = new_root
+  this.grow(this.parent)
+
+  new_root.children.push(self)
+
+  return new_root
+}
+
+proto.remove = function(event, listener) {
+  var list = this.listeners[event]
+  if(list) {
+    for(var i = 0, len = list.length; i < len; ++i) {
+      if(list[i].func === listener)
+        break
+    }
+
+    if(i !== len) {
+      list.splice(i, 1)
+    }
+  }
+  for(var i = 0, len = this.children.length; i < len; ++i) {
+    this.children[i].remove(event, listener)
+  }
+}
+
+proto.send = function(event, bbox, args) {
+  for(var i = 0, len = this.children.length; i < len; ++i) {
+    if(bbox.intersects(this.children[i].bbox)) {
+      this.children[i].send(event, bbox, args)
+    }
+  }
+
+  var list = this.listeners[event]
+  if(!list) {
+    return
+  }
+
+  for(var i = 0, len = list.length; i < len; ++i) {
+    if(list[i].bbox.intersects(bbox)) {
+      list[i].func.apply(null, args)
+    }
+  }
+}
+
+},{"aabb-3d":6}],28:[function(require,module,exports){
+(function (process){
+

+var window = window || {};

+var self = self || {};

+

+// High-resulution counter: emulate window.performance.now() for THREE.CLOCK

+if( window.performance === undefined ) {

+

+	window.performance = { };

+

+}

+

+if( window.performance.now === undefined ) {

+

+	window.performance.now = function () {

+

+		var time = process.hrtime();

+		return ( time[0] + time[1] / 1e9 ) * 1000;

+

+	};

+

+}

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author Larry Battle / http://bateru.com/news

+ */

+

+var THREE = THREE || { REVISION: '56' };

+

+self.console = self.console || {

+

+	info: function () {},

+	log: function () {},

+	debug: function () {},

+	warn: function () {},

+	error: function () {}

+

+};

+

+self.Int32Array = self.Int32Array || Array;

+self.Float32Array = self.Float32Array || Array;

+

+String.prototype.trim = String.prototype.trim || function () {

+

+	return this.replace( /^\s+|\s+$/g, '' );

+

+};

+

+// based on https://github.com/documentcloud/underscore/blob/bf657be243a075b5e72acc8a83e6f12a564d8f55/underscore.js#L767

+THREE.extend = function ( obj, source ) {

+

+	// ECMAScript5 compatibility based on: http://www.nczonline.net/blog/2012/12/11/are-your-mixins-ecmascript-5-compatible/

+	if ( Object.keys ) {

+

+		var keys = Object.keys( source );

+

+		for (var i = 0, il = keys.length; i < il; i++) {

+

+			var prop = keys[i];

+			Object.defineProperty( obj, prop, Object.getOwnPropertyDescriptor( source, prop ) );

+

+		}

+

+	} else {

+

+		var safeHasOwnProperty = {}.hasOwnProperty;

+

+		for ( var prop in source ) {

+

+			if ( safeHasOwnProperty.call( source, prop ) ) {

+

+				obj[prop] = source[prop];

+

+			}

+

+		}

+

+	}

+

+	return obj;

+

+};

+

+// http://paulirish.com/2011/requestanimationframe-for-smart-animating/

+// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

+

+// requestAnimationFrame polyfill by Erik Möller

+// fixes from Paul Irish and Tino Zijdel

+

+( function () {

+

+	var lastTime = 0;

+	var vendors = [ 'ms', 'moz', 'webkit', 'o' ];

+

+	for ( var x = 0; x < vendors.length && !window.requestAnimationFrame; ++ x ) {

+

+		window.requestAnimationFrame = window[ vendors[ x ] + 'RequestAnimationFrame' ];

+		window.cancelAnimationFrame = window[ vendors[ x ] + 'CancelAnimationFrame' ] || window[ vendors[ x ] + 'CancelRequestAnimationFrame' ];

+

+	}

+

+	if ( window.requestAnimationFrame === undefined ) {

+

+		window.requestAnimationFrame = function ( callback ) {

+

+			var currTime = Date.now(), timeToCall = Math.max( 0, 16 - ( currTime - lastTime ) );

+			var id = window.setTimeout( function() { callback( currTime + timeToCall ); }, timeToCall );

+			lastTime = currTime + timeToCall;

+			return id;

+

+		};

+

+	}

+

+	window.cancelAnimationFrame = window.cancelAnimationFrame || function ( id ) { window.clearTimeout( id ) };

+

+}() );

+

+// GL STATE CONSTANTS

+

+THREE.CullFaceNone = 0;

+THREE.CullFaceBack = 1;

+THREE.CullFaceFront = 2;

+THREE.CullFaceFrontBack = 3;

+

+THREE.FrontFaceDirectionCW = 0;

+THREE.FrontFaceDirectionCCW = 1;

+

+// SHADOWING TYPES

+

+THREE.BasicShadowMap = 0;

+THREE.PCFShadowMap = 1;

+THREE.PCFSoftShadowMap = 2;

+

+// MATERIAL CONSTANTS

+

+// side

+

+THREE.FrontSide = 0;

+THREE.BackSide = 1;

+THREE.DoubleSide = 2;

+

+// shading

+

+THREE.NoShading = 0;

+THREE.FlatShading = 1;

+THREE.SmoothShading = 2;

+

+// colors

+

+THREE.NoColors = 0;

+THREE.FaceColors = 1;

+THREE.VertexColors = 2;

+

+// blending modes

+

+THREE.NoBlending = 0;

+THREE.NormalBlending = 1;

+THREE.AdditiveBlending = 2;

+THREE.SubtractiveBlending = 3;

+THREE.MultiplyBlending = 4;

+THREE.CustomBlending = 5;

+

+// custom blending equations

+// (numbers start from 100 not to clash with other

+//  mappings to OpenGL constants defined in Texture.js)

+

+THREE.AddEquation = 100;

+THREE.SubtractEquation = 101;

+THREE.ReverseSubtractEquation = 102;

+

+// custom blending destination factors

+

+THREE.ZeroFactor = 200;

+THREE.OneFactor = 201;

+THREE.SrcColorFactor = 202;

+THREE.OneMinusSrcColorFactor = 203;

+THREE.SrcAlphaFactor = 204;

+THREE.OneMinusSrcAlphaFactor = 205;

+THREE.DstAlphaFactor = 206;

+THREE.OneMinusDstAlphaFactor = 207;

+

+// custom blending source factors

+

+//THREE.ZeroFactor = 200;

+//THREE.OneFactor = 201;

+//THREE.SrcAlphaFactor = 204;

+//THREE.OneMinusSrcAlphaFactor = 205;

+//THREE.DstAlphaFactor = 206;

+//THREE.OneMinusDstAlphaFactor = 207;

+THREE.DstColorFactor = 208;

+THREE.OneMinusDstColorFactor = 209;

+THREE.SrcAlphaSaturateFactor = 210;

+

+

+// TEXTURE CONSTANTS

+

+THREE.MultiplyOperation = 0;

+THREE.MixOperation = 1;

+THREE.AddOperation = 2;

+

+// Mapping modes

+

+THREE.UVMapping = function () {};

+

+THREE.CubeReflectionMapping = function () {};

+THREE.CubeRefractionMapping = function () {};

+

+THREE.SphericalReflectionMapping = function () {};

+THREE.SphericalRefractionMapping = function () {};

+

+// Wrapping modes

+

+THREE.RepeatWrapping = 1000;

+THREE.ClampToEdgeWrapping = 1001;

+THREE.MirroredRepeatWrapping = 1002;

+

+// Filters

+

+THREE.NearestFilter = 1003;

+THREE.NearestMipMapNearestFilter = 1004;

+THREE.NearestMipMapLinearFilter = 1005;

+THREE.LinearFilter = 1006;

+THREE.LinearMipMapNearestFilter = 1007;

+THREE.LinearMipMapLinearFilter = 1008;

+

+// Data types

+

+THREE.UnsignedByteType = 1009;

+THREE.ByteType = 1010;

+THREE.ShortType = 1011;

+THREE.UnsignedShortType = 1012;

+THREE.IntType = 1013;

+THREE.UnsignedIntType = 1014;

+THREE.FloatType = 1015;

+

+// Pixel types

+

+//THREE.UnsignedByteType = 1009;

+THREE.UnsignedShort4444Type = 1016;

+THREE.UnsignedShort5551Type = 1017;

+THREE.UnsignedShort565Type = 1018;

+

+// Pixel formats

+

+THREE.AlphaFormat = 1019;

+THREE.RGBFormat = 1020;

+THREE.RGBAFormat = 1021;

+THREE.LuminanceFormat = 1022;

+THREE.LuminanceAlphaFormat = 1023;

+

+// Compressed texture formats

+

+THREE.RGB_S3TC_DXT1_Format = 2001;

+THREE.RGBA_S3TC_DXT1_Format = 2002;

+THREE.RGBA_S3TC_DXT3_Format = 2003;

+THREE.RGBA_S3TC_DXT5_Format = 2004;

+

+/*

+// Potential future PVRTC compressed texture formats

+THREE.RGB_PVRTC_4BPPV1_Format = 2100;

+THREE.RGB_PVRTC_2BPPV1_Format = 2101;

+THREE.RGBA_PVRTC_4BPPV1_Format = 2102;

+THREE.RGBA_PVRTC_2BPPV1_Format = 2103;

+*/

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Color = function ( value ) {

+

+	if ( value !== undefined ) this.set( value );

+

+	return this;

+

+};

+

+THREE.extend( THREE.Color.prototype, {

+

+	r: 1, g: 1, b: 1,

+

+	set: function ( value ) {

+

+		switch ( typeof value ) {

+

+			case "number":

+				this.setHex( value );

+				break;

+

+			case "string":

+				this.setStyle( value );

+				break;

+

+		}

+

+	},

+

+	setHex: function ( hex ) {

+

+		hex = Math.floor( hex );

+

+		this.r = ( hex >> 16 & 255 ) / 255;

+		this.g = ( hex >> 8 & 255 ) / 255;

+		this.b = ( hex & 255 ) / 255;

+

+		return this;

+

+	},

+

+	setRGB: function ( r, g, b ) {

+

+		this.r = r;

+		this.g = g;

+		this.b = b;

+

+		return this;

+

+	},

+

+	setHSV: function ( h, s, v ) {

+

+		console.log( 'DEPRECATED: Color\'s .setHSV() will be removed. Use .setHSL( h, s, l ) instead.' );

+		return this.setHSL(h,s*v/((h=(2-s)*v)<1?h:2-h),h/2); // https://gist.github.com/xpansive/1337890

+

+	},

+

+	setHSL: function ( h, s, l ) {

+

+		// h,s,l ranges are in 0.0 - 1.0

+

+		if ( s === 0 ) {

+

+			this.r = this.g = this.b = l;

+

+		} else {

+

+			var hue2rgb = function ( p, q, t ) {

+

+				if ( t < 0 ) t += 1;

+				if ( t > 1 ) t -= 1;

+				if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;

+				if ( t < 1 / 2 ) return q;

+				if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );

+				return p;

+

+			};

+

+			var p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );

+			var q = ( 2 * l ) - p;

+

+			this.r = hue2rgb( q, p, h + 1 / 3 );

+			this.g = hue2rgb( q, p, h );

+			this.b = hue2rgb( q, p, h - 1 / 3 );

+

+		}

+

+		return this;

+

+	},

+

+	setStyle: function ( style ) {

+

+		// rgb(255,0,0)

+

+		if ( /^rgb\((\d+),(\d+),(\d+)\)$/i.test( style ) ) {

+

+			var color = /^rgb\((\d+),(\d+),(\d+)\)$/i.exec( style );

+

+			this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;

+			this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;

+			this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;

+

+			return this;

+

+		}

+

+		// rgb(100%,0%,0%)

+

+		if ( /^rgb\((\d+)\%,(\d+)\%,(\d+)\%\)$/i.test( style ) ) {

+

+			var color = /^rgb\((\d+)\%,(\d+)\%,(\d+)\%\)$/i.exec( style );

+

+			this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;

+			this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;

+			this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;

+

+			return this;

+

+		}

+

+		// #ff0000

+

+		if ( /^\#([0-9a-f]{6})$/i.test( style ) ) {

+

+			var color = /^\#([0-9a-f]{6})$/i.exec( style );

+

+			this.setHex( parseInt( color[ 1 ], 16 ) );

+

+			return this;

+

+		}

+

+		// #f00

+

+		if ( /^\#([0-9a-f])([0-9a-f])([0-9a-f])$/i.test( style ) ) {

+

+			var color = /^\#([0-9a-f])([0-9a-f])([0-9a-f])$/i.exec( style );

+

+			this.setHex( parseInt( color[ 1 ] + color[ 1 ] + color[ 2 ] + color[ 2 ] + color[ 3 ] + color[ 3 ], 16 ) );

+

+			return this;

+

+		}

+

+		// red

+

+		if ( /^(\w+)$/i.test( style ) ) {

+

+			this.setHex( THREE.ColorKeywords[ style ] );

+

+			return this;

+

+		}

+

+

+	},

+

+	copy: function ( color ) {

+

+		this.r = color.r;

+		this.g = color.g;

+		this.b = color.b;

+

+		return this;

+

+	},

+

+	copyGammaToLinear: function ( color ) {

+

+		this.r = color.r * color.r;

+		this.g = color.g * color.g;

+		this.b = color.b * color.b;

+

+		return this;

+

+	},

+

+	copyLinearToGamma: function ( color ) {

+

+		this.r = Math.sqrt( color.r );

+		this.g = Math.sqrt( color.g );

+		this.b = Math.sqrt( color.b );

+

+		return this;

+

+	},

+

+	convertGammaToLinear: function () {

+

+		var r = this.r, g = this.g, b = this.b;

+

+		this.r = r * r;

+		this.g = g * g;

+		this.b = b * b;

+

+		return this;

+

+	},

+

+	convertLinearToGamma: function () {

+

+		this.r = Math.sqrt( this.r );

+		this.g = Math.sqrt( this.g );

+		this.b = Math.sqrt( this.b );

+

+		return this;

+

+	},

+

+	getHex: function () {

+

+		return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;

+

+	},

+

+	getHexString: function () {

+

+		return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );

+

+	},

+

+	getHSL: function () {

+

+		var hsl = { h: 0, s: 0, l: 0 };

+

+		return function () {

+

+			// h,s,l ranges are in 0.0 - 1.0

+

+			var r = this.r, g = this.g, b = this.b;

+

+			var max = Math.max( r, g, b );

+			var min = Math.min( r, g, b );

+

+			var hue, saturation;

+			var lightness = ( min + max ) / 2.0;

+

+			if ( min === max ) {

+

+				hue = 0;

+				saturation = 0;

+

+			} else {

+

+				var delta = max - min;

+

+				saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );

+

+				switch ( max ) {

+

+					case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;

+					case g: hue = ( b - r ) / delta + 2; break;

+					case b: hue = ( r - g ) / delta + 4; break;

+

+				}

+

+				hue /= 6;

+

+			}

+

+			hsl.h = hue;

+			hsl.s = saturation;

+			hsl.l = lightness;

+

+			return hsl;

+

+		};

+

+	}(),

+

+	getStyle: function () {

+

+		return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';

+

+	},

+

+	offsetHSL: function ( h, s, l ) {

+

+		var hsl = this.getHSL();

+

+		hsl.h += h; hsl.s += s; hsl.l += l;

+

+		this.setHSL( hsl.h, hsl.s, hsl.l );

+

+		return this;

+

+	},

+

+	add: function ( color ) {

+

+		this.r += color.r;

+		this.g += color.g;

+		this.b += color.b;

+

+		return this;

+

+	},

+

+	addColors: function ( color1, color2 ) {

+

+		this.r = color1.r + color2.r;

+		this.g = color1.g + color2.g;

+		this.b = color1.b + color2.b;

+

+		return this;

+

+	},

+

+	addScalar: function ( s ) {

+

+		this.r += s;

+		this.g += s;

+		this.b += s;

+

+		return this;

+

+	},

+

+	multiply: function ( color ) {

+

+		this.r *= color.r;

+		this.g *= color.g;

+		this.b *= color.b;

+

+		return this;

+

+	},

+

+	multiplyScalar: function ( s ) {

+

+		this.r *= s;

+		this.g *= s;

+		this.b *= s;

+

+		return this;

+

+	},

+

+	lerp: function ( color, alpha ) {

+

+		this.r += ( color.r - this.r ) * alpha;

+		this.g += ( color.g - this.g ) * alpha;

+		this.b += ( color.b - this.b ) * alpha;

+

+		return this;

+

+	},

+

+	clone: function () {

+

+		return new THREE.Color().setRGB( this.r, this.g, this.b );

+

+	}

+

+} );

+

+THREE.ColorKeywords = { "aliceblue": 0xF0F8FF, "antiquewhite": 0xFAEBD7, "aqua": 0x00FFFF, "aquamarine": 0x7FFFD4, "azure": 0xF0FFFF,

+"beige": 0xF5F5DC, "bisque": 0xFFE4C4, "black": 0x000000, "blanchedalmond": 0xFFEBCD, "blue": 0x0000FF, "blueviolet": 0x8A2BE2,

+"brown": 0xA52A2A, "burlywood": 0xDEB887, "cadetblue": 0x5F9EA0, "chartreuse": 0x7FFF00, "chocolate": 0xD2691E, "coral": 0xFF7F50,

+"cornflowerblue": 0x6495ED, "cornsilk": 0xFFF8DC, "crimson": 0xDC143C, "cyan": 0x00FFFF, "darkblue": 0x00008B, "darkcyan": 0x008B8B,

+"darkgoldenrod": 0xB8860B, "darkgray": 0xA9A9A9, "darkgreen": 0x006400, "darkgrey": 0xA9A9A9, "darkkhaki": 0xBDB76B, "darkmagenta": 0x8B008B,

+"darkolivegreen": 0x556B2F, "darkorange": 0xFF8C00, "darkorchid": 0x9932CC, "darkred": 0x8B0000, "darksalmon": 0xE9967A, "darkseagreen": 0x8FBC8F,

+"darkslateblue": 0x483D8B, "darkslategray": 0x2F4F4F, "darkslategrey": 0x2F4F4F, "darkturquoise": 0x00CED1, "darkviolet": 0x9400D3,

+"deeppink": 0xFF1493, "deepskyblue": 0x00BFFF, "dimgray": 0x696969, "dimgrey": 0x696969, "dodgerblue": 0x1E90FF, "firebrick": 0xB22222,

+"floralwhite": 0xFFFAF0, "forestgreen": 0x228B22, "fuchsia": 0xFF00FF, "gainsboro": 0xDCDCDC, "ghostwhite": 0xF8F8FF, "gold": 0xFFD700,

+"goldenrod": 0xDAA520, "gray": 0x808080, "green": 0x008000, "greenyellow": 0xADFF2F, "grey": 0x808080, "honeydew": 0xF0FFF0, "hotpink": 0xFF69B4,

+"indianred": 0xCD5C5C, "indigo": 0x4B0082, "ivory": 0xFFFFF0, "khaki": 0xF0E68C, "lavender": 0xE6E6FA, "lavenderblush": 0xFFF0F5, "lawngreen": 0x7CFC00,

+"lemonchiffon": 0xFFFACD, "lightblue": 0xADD8E6, "lightcoral": 0xF08080, "lightcyan": 0xE0FFFF, "lightgoldenrodyellow": 0xFAFAD2, "lightgray": 0xD3D3D3,

+"lightgreen": 0x90EE90, "lightgrey": 0xD3D3D3, "lightpink": 0xFFB6C1, "lightsalmon": 0xFFA07A, "lightseagreen": 0x20B2AA, "lightskyblue": 0x87CEFA,

+"lightslategray": 0x778899, "lightslategrey": 0x778899, "lightsteelblue": 0xB0C4DE, "lightyellow": 0xFFFFE0, "lime": 0x00FF00, "limegreen": 0x32CD32,

+"linen": 0xFAF0E6, "magenta": 0xFF00FF, "maroon": 0x800000, "mediumaquamarine": 0x66CDAA, "mediumblue": 0x0000CD, "mediumorchid": 0xBA55D3,

+"mediumpurple": 0x9370DB, "mediumseagreen": 0x3CB371, "mediumslateblue": 0x7B68EE, "mediumspringgreen": 0x00FA9A, "mediumturquoise": 0x48D1CC,

+"mediumvioletred": 0xC71585, "midnightblue": 0x191970, "mintcream": 0xF5FFFA, "mistyrose": 0xFFE4E1, "moccasin": 0xFFE4B5, "navajowhite": 0xFFDEAD,

+"navy": 0x000080, "oldlace": 0xFDF5E6, "olive": 0x808000, "olivedrab": 0x6B8E23, "orange": 0xFFA500, "orangered": 0xFF4500, "orchid": 0xDA70D6,

+"palegoldenrod": 0xEEE8AA, "palegreen": 0x98FB98, "paleturquoise": 0xAFEEEE, "palevioletred": 0xDB7093, "papayawhip": 0xFFEFD5, "peachpuff": 0xFFDAB9,

+"peru": 0xCD853F, "pink": 0xFFC0CB, "plum": 0xDDA0DD, "powderblue": 0xB0E0E6, "purple": 0x800080, "red": 0xFF0000, "rosybrown": 0xBC8F8F,

+"royalblue": 0x4169E1, "saddlebrown": 0x8B4513, "salmon": 0xFA8072, "sandybrown": 0xF4A460, "seagreen": 0x2E8B57, "seashell": 0xFFF5EE,

+"sienna": 0xA0522D, "silver": 0xC0C0C0, "skyblue": 0x87CEEB, "slateblue": 0x6A5ACD, "slategray": 0x708090, "slategrey": 0x708090, "snow": 0xFFFAFA,

+"springgreen": 0x00FF7F, "steelblue": 0x4682B4, "tan": 0xD2B48C, "teal": 0x008080, "thistle": 0xD8BFD8, "tomato": 0xFF6347, "turquoise": 0x40E0D0,

+"violet": 0xEE82EE, "wheat": 0xF5DEB3, "white": 0xFFFFFF, "whitesmoke": 0xF5F5F5, "yellow": 0xFFFF00, "yellowgreen": 0x9ACD32 };

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ * @author WestLangley / http://github.com/WestLangley

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Quaternion = function( x, y, z, w ) {

+

+	this.x = x || 0;

+	this.y = y || 0;

+	this.z = z || 0;

+	this.w = ( w !== undefined ) ? w : 1;

+

+};

+

+THREE.extend( THREE.Quaternion.prototype, {

+

+	set: function ( x, y, z, w ) {

+

+		this.x = x;

+		this.y = y;

+		this.z = z;

+		this.w = w;

+

+		return this;

+

+	},

+

+	copy: function ( q ) {

+

+		this.x = q.x;

+		this.y = q.y;

+		this.z = q.z;

+		this.w = q.w;

+

+		return this;

+

+	},

+

+	setFromEuler: function ( v, order ) {

+

+		// http://www.mathworks.com/matlabcentral/fileexchange/

+		// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/

+		//	content/SpinCalc.m

+

+		var c1 = Math.cos( v.x / 2 );

+		var c2 = Math.cos( v.y / 2 );

+		var c3 = Math.cos( v.z / 2 );

+		var s1 = Math.sin( v.x / 2 );

+		var s2 = Math.sin( v.y / 2 );

+		var s3 = Math.sin( v.z / 2 );

+

+		if ( order === undefined || order === 'XYZ' ) {

+

+			this.x = s1 * c2 * c3 + c1 * s2 * s3;

+			this.y = c1 * s2 * c3 - s1 * c2 * s3;

+			this.z = c1 * c2 * s3 + s1 * s2 * c3;

+			this.w = c1 * c2 * c3 - s1 * s2 * s3;

+

+		} else if ( order === 'YXZ' ) {

+

+			this.x = s1 * c2 * c3 + c1 * s2 * s3;

+			this.y = c1 * s2 * c3 - s1 * c2 * s3;

+			this.z = c1 * c2 * s3 - s1 * s2 * c3;

+			this.w = c1 * c2 * c3 + s1 * s2 * s3;

+

+		} else if ( order === 'ZXY' ) {

+

+			this.x = s1 * c2 * c3 - c1 * s2 * s3;

+			this.y = c1 * s2 * c3 + s1 * c2 * s3;

+			this.z = c1 * c2 * s3 + s1 * s2 * c3;

+			this.w = c1 * c2 * c3 - s1 * s2 * s3;

+

+		} else if ( order === 'ZYX' ) {

+

+			this.x = s1 * c2 * c3 - c1 * s2 * s3;

+			this.y = c1 * s2 * c3 + s1 * c2 * s3;

+			this.z = c1 * c2 * s3 - s1 * s2 * c3;

+			this.w = c1 * c2 * c3 + s1 * s2 * s3;

+

+		} else if ( order === 'YZX' ) {

+

+			this.x = s1 * c2 * c3 + c1 * s2 * s3;

+			this.y = c1 * s2 * c3 + s1 * c2 * s3;

+			this.z = c1 * c2 * s3 - s1 * s2 * c3;

+			this.w = c1 * c2 * c3 - s1 * s2 * s3;

+

+		} else if ( order === 'XZY' ) {

+

+			this.x = s1 * c2 * c3 - c1 * s2 * s3;

+			this.y = c1 * s2 * c3 - s1 * c2 * s3;

+			this.z = c1 * c2 * s3 + s1 * s2 * c3;

+			this.w = c1 * c2 * c3 + s1 * s2 * s3;

+

+		}

+

+		return this;

+

+	},

+

+	setFromAxisAngle: function ( axis, angle ) {

+

+		// from http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm

+		// axis have to be normalized

+

+		var halfAngle = angle / 2,

+			s = Math.sin( halfAngle );

+

+		this.x = axis.x * s;

+		this.y = axis.y * s;

+		this.z = axis.z * s;

+		this.w = Math.cos( halfAngle );

+

+		return this;

+

+	},

+

+	setFromRotationMatrix: function ( m ) {

+

+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm

+

+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

+

+		var te = m.elements,

+

+			m11 = te[0], m12 = te[4], m13 = te[8],

+			m21 = te[1], m22 = te[5], m23 = te[9],

+			m31 = te[2], m32 = te[6], m33 = te[10],

+

+			trace = m11 + m22 + m33,

+			s;

+

+		if ( trace > 0 ) {

+

+			s = 0.5 / Math.sqrt( trace + 1.0 );

+

+			this.w = 0.25 / s;

+			this.x = ( m32 - m23 ) * s;

+			this.y = ( m13 - m31 ) * s;

+			this.z = ( m21 - m12 ) * s;

+

+		} else if ( m11 > m22 && m11 > m33 ) {

+

+			s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );

+

+			this.w = (m32 - m23 ) / s;

+			this.x = 0.25 * s;

+			this.y = (m12 + m21 ) / s;

+			this.z = (m13 + m31 ) / s;

+

+		} else if ( m22 > m33 ) {

+

+			s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );

+

+			this.w = (m13 - m31 ) / s;

+			this.x = (m12 + m21 ) / s;

+			this.y = 0.25 * s;

+			this.z = (m23 + m32 ) / s;

+

+		} else {

+

+			s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );

+

+			this.w = ( m21 - m12 ) / s;

+			this.x = ( m13 + m31 ) / s;

+			this.y = ( m23 + m32 ) / s;

+			this.z = 0.25 * s;

+

+		}

+

+		return this;

+

+	},

+

+	inverse: function () {

+

+		this.conjugate().normalize();

+

+		return this;

+

+	},

+

+	conjugate: function () {

+

+		this.x *= -1;

+		this.y *= -1;

+		this.z *= -1;

+

+		return this;

+

+	},

+

+	lengthSq: function () {

+

+		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;

+

+	},

+

+	length: function () {

+

+		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

+

+	},

+

+	normalize: function () {

+

+		var l = this.length();

+

+		if ( l === 0 ) {

+

+			this.x = 0;

+			this.y = 0;

+			this.z = 0;

+			this.w = 1;

+

+		} else {

+

+			l = 1 / l;

+

+			this.x = this.x * l;

+			this.y = this.y * l;

+			this.z = this.z * l;

+			this.w = this.w * l;

+

+		}

+

+		return this;

+

+	},

+

+	multiply: function ( q, p ) {

+

+		if ( p !== undefined ) {

+

+			console.warn( 'DEPRECATED: Quaternion\'s .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );

+			return this.multiplyQuaternions( q, p );

+

+		}

+

+		return this.multiplyQuaternions( this, q );

+

+	},

+

+	multiplyQuaternions: function ( a, b ) {

+

+		// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm

+

+		var qax = a.x, qay = a.y, qaz = a.z, qaw = a.w;

+		var qbx = b.x, qby = b.y, qbz = b.z, qbw = b.w;

+

+		this.x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;

+		this.y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;

+		this.z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;

+		this.w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

+

+		return this;

+

+	},

+

+	multiplyVector3: function ( vector ) {

+

+		console.warn( 'DEPRECATED: Quaternion\'s .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );

+		return vector.applyQuaternion( this );

+

+	},

+

+	slerp: function ( qb, t ) {

+

+		var x = this.x, y = this.y, z = this.z, w = this.w;

+

+		// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

+

+		var cosHalfTheta = w * qb.w + x * qb.x + y * qb.y + z * qb.z;

+

+		if ( cosHalfTheta < 0 ) {

+

+			this.w = -qb.w;

+			this.x = -qb.x;

+			this.y = -qb.y;

+			this.z = -qb.z;

+

+			cosHalfTheta = -cosHalfTheta;

+

+		} else {

+

+			this.copy( qb );

+

+		}

+

+		if ( cosHalfTheta >= 1.0 ) {

+

+			this.w = w;

+			this.x = x;

+			this.y = y;

+			this.z = z;

+

+			return this;

+

+		}

+

+		var halfTheta = Math.acos( cosHalfTheta );

+		var sinHalfTheta = Math.sqrt( 1.0 - cosHalfTheta * cosHalfTheta );

+

+		if ( Math.abs( sinHalfTheta ) < 0.001 ) {

+

+			this.w = 0.5 * ( w + this.w );

+			this.x = 0.5 * ( x + this.x );

+			this.y = 0.5 * ( y + this.y );

+			this.z = 0.5 * ( z + this.z );

+

+			return this;

+

+		}

+

+		var ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,

+		ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;

+

+		this.w = ( w * ratioA + this.w * ratioB );

+		this.x = ( x * ratioA + this.x * ratioB );

+		this.y = ( y * ratioA + this.y * ratioB );

+		this.z = ( z * ratioA + this.z * ratioB );

+

+		return this;

+

+	},

+

+	equals: function ( v ) {

+

+		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Quaternion( this.x, this.y, this.z, this.w );

+

+	}

+

+} );

+

+THREE.Quaternion.slerp = function ( qa, qb, qm, t ) {

+

+	return qm.copy( qa ).slerp( qb, t );

+

+}

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author philogb / http://blog.thejit.org/

+ * @author egraether / http://egraether.com/

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ */

+

+THREE.Vector2 = function ( x, y ) {

+

+	this.x = x || 0;

+	this.y = y || 0;

+

+};

+

+THREE.extend( THREE.Vector2.prototype, {

+

+	set: function ( x, y ) {

+

+		this.x = x;

+		this.y = y;

+

+		return this;

+

+	},

+

+	setX: function ( x ) {

+

+		this.x = x;

+

+		return this;

+

+	},

+

+	setY: function ( y ) {

+

+		this.y = y;

+

+		return this;

+

+	},

+

+

+	setComponent: function ( index, value ) {

+

+		switch ( index ) {

+

+			case 0: this.x = value; break;

+			case 1: this.y = value; break;

+			default: throw new Error( "index is out of range: " + index );

+

+		}

+

+	},

+

+	getComponent: function ( index ) {

+

+		switch ( index ) {

+

+			case 0: return this.x;

+			case 1: return this.y;

+			default: throw new Error( "index is out of range: " + index );

+

+		}

+

+	},

+

+	copy: function ( v ) {

+

+		this.x = v.x;

+		this.y = v.y;

+

+		return this;

+

+	},

+

+	add: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector2\'s .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );

+			return this.addVectors( v, w );

+

+		}

+

+		this.x += v.x;

+		this.y += v.y;

+

+		return this;

+

+	},

+

+	addVectors: function ( a, b ) {

+

+		this.x = a.x + b.x;

+		this.y = a.y + b.y;

+

+		return this;

+

+	},

+

+	addScalar: function ( s ) {

+

+		this.x += s;

+		this.y += s;

+

+		return this;

+

+	},

+

+	sub: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector2\'s .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );

+			return this.subVectors( v, w );

+

+		}

+

+		this.x -= v.x;

+		this.y -= v.y;

+

+		return this;

+

+	},

+

+	subVectors: function ( a, b ) {

+

+		this.x = a.x - b.x;

+		this.y = a.y - b.y;

+

+		return this;

+

+	},

+

+	multiplyScalar: function ( s ) {

+

+		this.x *= s;

+		this.y *= s;

+

+		return this;

+

+	},

+

+	divideScalar: function ( s ) {

+

+		if ( s !== 0 ) {

+

+			this.x /= s;

+			this.y /= s;

+

+		} else {

+

+			this.set( 0, 0 );

+

+		}

+

+		return this;

+

+	},

+

+	min: function ( v ) {

+

+		if ( this.x > v.x ) {

+

+			this.x = v.x;

+

+		}

+

+		if ( this.y > v.y ) {

+

+			this.y = v.y;

+

+		}

+

+		return this;

+

+	},

+

+	max: function ( v ) {

+

+		if ( this.x < v.x ) {

+

+			this.x = v.x;

+

+		}

+

+		if ( this.y < v.y ) {

+

+			this.y = v.y;

+

+		}

+

+		return this;

+

+	},

+

+	clamp: function ( min, max ) {

+

+		// This function assumes min < max, if this assumption isn't true it will not operate correctly

+

+		if ( this.x < min.x ) {

+

+			this.x = min.x;

+

+		} else if ( this.x > max.x ) {

+

+			this.x = max.x;

+

+		}

+

+		if ( this.y < min.y ) {

+

+			this.y = min.y;

+

+		} else if ( this.y > max.y ) {

+

+			this.y = max.y;

+

+		}

+

+		return this;

+

+	},

+

+	negate: function() {

+

+		return this.multiplyScalar( - 1 );

+

+	},

+

+	dot: function ( v ) {

+

+		return this.x * v.x + this.y * v.y;

+

+	},

+

+	lengthSq: function () {

+

+		return this.x * this.x + this.y * this.y;

+

+	},

+

+	length: function () {

+

+		return Math.sqrt( this.x * this.x + this.y * this.y );

+

+	},

+

+	normalize: function () {

+

+		return this.divideScalar( this.length() );

+

+	},

+

+	distanceTo: function ( v ) {

+

+		return Math.sqrt( this.distanceToSquared( v ) );

+

+	},

+

+	distanceToSquared: function ( v ) {

+

+		var dx = this.x - v.x, dy = this.y - v.y;

+		return dx * dx + dy * dy;

+

+	},

+

+	setLength: function ( l ) {

+

+		var oldLength = this.length();

+

+		if ( oldLength !== 0 && l !== oldLength ) {

+

+			this.multiplyScalar( l / oldLength );

+		}

+

+		return this;

+

+	},

+

+	lerp: function ( v, alpha ) {

+

+		this.x += ( v.x - this.x ) * alpha;

+		this.y += ( v.y - this.y ) * alpha;

+

+		return this;

+

+	},

+

+	equals: function( v ) {

+

+		return ( ( v.x === this.x ) && ( v.y === this.y ) );

+

+	},

+

+	toArray: function () {

+

+		return [ this.x, this.y ];

+		

+	},

+

+	clone: function () {

+

+		return new THREE.Vector2( this.x, this.y );

+

+	}

+

+} );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author *kile / http://kile.stravaganza.org/

+ * @author philogb / http://blog.thejit.org/

+ * @author mikael emtinger / http://gomo.se/

+ * @author egraether / http://egraether.com/

+ * @author WestLangley / http://github.com/WestLangley

+ */

+

+THREE.Vector3 = function ( x, y, z ) {

+

+	this.x = x || 0;

+	this.y = y || 0;

+	this.z = z || 0;

+

+};

+

+THREE.extend( THREE.Vector3.prototype, {

+

+	set: function ( x, y, z ) {

+

+		this.x = x;

+		this.y = y;

+		this.z = z;

+

+		return this;

+

+	},

+

+	setX: function ( x ) {

+

+		this.x = x;

+

+		return this;

+

+	},

+

+	setY: function ( y ) {

+

+		this.y = y;

+

+		return this;

+

+	},

+

+	setZ: function ( z ) {

+

+		this.z = z;

+

+		return this;

+

+	},

+

+	setComponent: function ( index, value ) {

+

+		switch ( index ) {

+

+			case 0: this.x = value; break;

+			case 1: this.y = value; break;

+			case 2: this.z = value; break;

+			default: throw new Error( "index is out of range: " + index );

+

+		}

+

+	},

+

+	getComponent: function ( index ) {

+

+		switch ( index ) {

+

+			case 0: return this.x;

+			case 1: return this.y;

+			case 2: return this.z;

+			default: throw new Error( "index is out of range: " + index );

+

+		}

+

+	},

+

+	copy: function ( v ) {

+

+		this.x = v.x;

+		this.y = v.y;

+		this.z = v.z;

+

+		return this;

+

+	},

+

+	add: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector3\'s .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );

+			return this.addVectors( v, w );

+

+		}

+

+		this.x += v.x;

+		this.y += v.y;

+		this.z += v.z;

+

+		return this;

+

+	},

+

+	addScalar: function ( s ) {

+

+		this.x += s;

+		this.y += s;

+		this.z += s;

+

+		return this;

+

+	},

+

+	addVectors: function ( a, b ) {

+

+		this.x = a.x + b.x;

+		this.y = a.y + b.y;

+		this.z = a.z + b.z;

+

+		return this;

+

+	},

+

+	sub: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector3\'s .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );

+			return this.subVectors( v, w );

+

+		}

+

+		this.x -= v.x;

+		this.y -= v.y;

+		this.z -= v.z;

+

+		return this;

+

+	},

+

+	subVectors: function ( a, b ) {

+

+		this.x = a.x - b.x;

+		this.y = a.y - b.y;

+		this.z = a.z - b.z;

+

+		return this;

+

+	},

+

+	multiply: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector3\'s .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );

+			return this.multiplyVectors( v, w );

+

+		}

+

+		this.x *= v.x;

+		this.y *= v.y;

+		this.z *= v.z;

+

+		return this;

+

+	},

+

+	multiplyScalar: function ( s ) {

+

+		this.x *= s;

+		this.y *= s;

+		this.z *= s;

+

+		return this;

+

+	},

+

+	multiplyVectors: function ( a, b ) {

+

+		this.x = a.x * b.x;

+		this.y = a.y * b.y;

+		this.z = a.z * b.z;

+

+		return this;

+

+	},

+

+	applyMatrix3: function ( m ) {

+

+		var x = this.x;

+		var y = this.y;

+		var z = this.z;

+

+		var e = m.elements;

+

+		this.x = e[0] * x + e[3] * y + e[6] * z;

+		this.y = e[1] * x + e[4] * y + e[7] * z;

+		this.z = e[2] * x + e[5] * y + e[8] * z;

+

+		return this;

+

+	},

+

+	applyMatrix4: function ( m ) {

+

+		// input: THREE.Matrix4 affine matrix

+

+		var x = this.x, y = this.y, z = this.z;

+

+		var e = m.elements;

+

+		this.x = e[0] * x + e[4] * y + e[8]  * z + e[12];

+		this.y = e[1] * x + e[5] * y + e[9]  * z + e[13];

+		this.z = e[2] * x + e[6] * y + e[10] * z + e[14];

+

+		return this;

+

+	},

+

+	applyProjection: function ( m ) {

+

+		// input: THREE.Matrix4 projection matrix

+

+		var x = this.x, y = this.y, z = this.z;

+

+		var e = m.elements;

+		var d = 1 / ( e[3] * x + e[7] * y + e[11] * z + e[15] ); // perspective divide

+

+		this.x = ( e[0] * x + e[4] * y + e[8]  * z + e[12] ) * d;

+		this.y = ( e[1] * x + e[5] * y + e[9]  * z + e[13] ) * d;

+		this.z = ( e[2] * x + e[6] * y + e[10] * z + e[14] ) * d;

+

+		return this;

+

+	},

+

+	applyQuaternion: function ( q ) {

+

+		var x = this.x;

+		var y = this.y;

+		var z = this.z;

+

+		var qx = q.x;

+		var qy = q.y;

+		var qz = q.z;

+		var qw = q.w;

+

+		// calculate quat * vector

+

+		var ix =  qw * x + qy * z - qz * y;

+		var iy =  qw * y + qz * x - qx * z;

+		var iz =  qw * z + qx * y - qy * x;

+		var iw = -qx * x - qy * y - qz * z;

+

+		// calculate result * inverse quat

+

+		this.x = ix * qw + iw * -qx + iy * -qz - iz * -qy;

+		this.y = iy * qw + iw * -qy + iz * -qx - ix * -qz;

+		this.z = iz * qw + iw * -qz + ix * -qy - iy * -qx;

+

+		return this;

+

+	},

+

+	applyEuler: function () {

+

+		var q1 = new THREE.Quaternion();

+

+		return function ( v, eulerOrder ) {

+

+			var quaternion = q1.setFromEuler( v, eulerOrder );

+

+			this.applyQuaternion( quaternion );

+

+			return this;

+

+		};

+

+	}(),

+

+	applyAxisAngle: function () {

+

+		var q1 = new THREE.Quaternion();

+

+		return function ( axis, angle ) {

+

+			var quaternion = q1.setFromAxisAngle( axis, angle );

+

+			this.applyQuaternion( quaternion );

+

+			return this;

+

+		};

+

+	}(),

+

+	transformDirection: function ( m ) {

+

+		// input: THREE.Matrix4 affine matrix

+		// vector interpreted as a direction

+

+		var x = this.x, y = this.y, z = this.z;

+

+		var e = m.elements;

+

+		this.x = e[0] * x + e[4] * y + e[8]  * z;

+		this.y = e[1] * x + e[5] * y + e[9]  * z;

+		this.z = e[2] * x + e[6] * y + e[10] * z;

+

+		this.normalize();

+

+		return this;

+

+	},

+

+	divide: function ( v ) {

+

+		this.x /= v.x;

+		this.y /= v.y;

+		this.z /= v.z;

+

+		return this;

+

+	},

+

+	divideScalar: function ( s ) {

+

+		if ( s !== 0 ) {

+

+			this.x /= s;

+			this.y /= s;

+			this.z /= s;

+

+		} else {

+

+			this.x = 0;

+			this.y = 0;

+			this.z = 0;

+

+		}

+

+		return this;

+

+	},

+

+	min: function ( v ) {

+

+		if ( this.x > v.x ) {

+

+			this.x = v.x;

+

+		}

+

+		if ( this.y > v.y ) {

+

+			this.y = v.y;

+

+		}

+

+		if ( this.z > v.z ) {

+

+			this.z = v.z;

+

+		}

+

+		return this;

+

+	},

+

+	max: function ( v ) {

+

+		if ( this.x < v.x ) {

+

+			this.x = v.x;

+

+		}

+

+		if ( this.y < v.y ) {

+

+			this.y = v.y;

+

+		}

+

+		if ( this.z < v.z ) {

+

+			this.z = v.z;

+

+		}

+

+		return this;

+

+	},

+

+	clamp: function ( min, max ) {

+

+		// This function assumes min < max, if this assumption isn't true it will not operate correctly

+

+		if ( this.x < min.x ) {

+

+			this.x = min.x;

+

+		} else if ( this.x > max.x ) {

+

+			this.x = max.x;

+

+		}

+

+		if ( this.y < min.y ) {

+

+			this.y = min.y;

+

+		} else if ( this.y > max.y ) {

+

+			this.y = max.y;

+

+		}

+

+		if ( this.z < min.z ) {

+

+			this.z = min.z;

+

+		} else if ( this.z > max.z ) {

+

+			this.z = max.z;

+

+		}

+

+		return this;

+

+	},

+

+	negate: function () {

+

+		return this.multiplyScalar( - 1 );

+

+	},

+

+	dot: function ( v ) {

+

+		return this.x * v.x + this.y * v.y + this.z * v.z;

+

+	},

+

+	lengthSq: function () {

+

+		return this.x * this.x + this.y * this.y + this.z * this.z;

+

+	},

+

+	length: function () {

+

+		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );

+

+	},

+

+	lengthManhattan: function () {

+

+		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );

+

+	},

+

+	normalize: function () {

+

+		return this.divideScalar( this.length() );

+

+	},

+

+	setLength: function ( l ) {

+

+		var oldLength = this.length();

+

+		if ( oldLength !== 0 && l !== oldLength  ) {

+

+			this.multiplyScalar( l / oldLength );

+		}

+

+		return this;

+

+	},

+

+	lerp: function ( v, alpha ) {

+

+		this.x += ( v.x - this.x ) * alpha;

+		this.y += ( v.y - this.y ) * alpha;

+		this.z += ( v.z - this.z ) * alpha;

+

+		return this;

+

+	},

+

+	cross: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector3\'s .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );

+			return this.crossVectors( v, w );

+

+		}

+

+		var x = this.x, y = this.y, z = this.z;

+

+		this.x = y * v.z - z * v.y;

+		this.y = z * v.x - x * v.z;

+		this.z = x * v.y - y * v.x;

+

+		return this;

+

+	},

+

+	crossVectors: function ( a, b ) {

+

+		this.x = a.y * b.z - a.z * b.y;

+		this.y = a.z * b.x - a.x * b.z;

+		this.z = a.x * b.y - a.y * b.x;

+

+		return this;

+

+	},

+

+	projectOnVector: function () {

+

+		var v1 = new THREE.Vector3();

+

+		return function( vector ) {

+

+			v1.copy( vector ).normalize();

+			var d = this.dot( v1 );

+			return this.copy( v1 ).multiplyScalar( d );

+

+		};

+

+	}(),

+

+	projectOnPlane: function () {

+

+		var v1 = new THREE.Vector3();

+

+		return function( planeNormal ) {

+

+			v1.copy( this ).projectOnVector( planeNormal );

+

+			return this.sub( v1 );

+

+		}

+

+	}(),

+

+	reflect: function () {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( vector ) {

+

+		    v1.copy( this ).projectOnVector( vector ).multiplyScalar( 2 );

+

+		    return this.subVectors( v1, this );

+

+		}

+

+	}(),

+

+	angleTo: function ( v ) {

+

+		var theta = this.dot( v ) / ( this.length() * v.length() );

+

+		// clamp, to handle numerical problems

+

+		return Math.acos( THREE.Math.clamp( theta, -1, 1 ) );

+

+	},

+

+	distanceTo: function ( v ) {

+

+		return Math.sqrt( this.distanceToSquared( v ) );

+

+	},

+

+	distanceToSquared: function ( v ) {

+

+		var dx = this.x - v.x;

+		var dy = this.y - v.y;

+		var dz = this.z - v.z;

+

+		return dx * dx + dy * dy + dz * dz;

+

+	},

+

+	getPositionFromMatrix: function ( m ) {

+

+		this.x = m.elements[12];

+		this.y = m.elements[13];

+		this.z = m.elements[14];

+

+		return this;

+

+	},

+

+	setEulerFromRotationMatrix: function ( m, order ) {

+

+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

+

+		// clamp, to handle numerical problems

+

+		function clamp( x ) {

+

+			return Math.min( Math.max( x, -1 ), 1 );

+

+		}

+

+		var te = m.elements;

+		var m11 = te[0], m12 = te[4], m13 = te[8];

+		var m21 = te[1], m22 = te[5], m23 = te[9];

+		var m31 = te[2], m32 = te[6], m33 = te[10];

+

+		if ( order === undefined || order === 'XYZ' ) {

+

+			this.y = Math.asin( clamp( m13 ) );

+

+			if ( Math.abs( m13 ) < 0.99999 ) {

+

+				this.x = Math.atan2( - m23, m33 );

+				this.z = Math.atan2( - m12, m11 );

+

+			} else {

+

+				this.x = Math.atan2( m32, m22 );

+				this.z = 0;

+

+			}

+

+		} else if ( order === 'YXZ' ) {

+

+			this.x = Math.asin( - clamp( m23 ) );

+

+			if ( Math.abs( m23 ) < 0.99999 ) {

+

+				this.y = Math.atan2( m13, m33 );

+				this.z = Math.atan2( m21, m22 );

+

+			} else {

+

+				this.y = Math.atan2( - m31, m11 );

+				this.z = 0;

+

+			}

+

+		} else if ( order === 'ZXY' ) {

+

+			this.x = Math.asin( clamp( m32 ) );

+

+			if ( Math.abs( m32 ) < 0.99999 ) {

+

+				this.y = Math.atan2( - m31, m33 );

+				this.z = Math.atan2( - m12, m22 );

+

+			} else {

+

+				this.y = 0;

+				this.z = Math.atan2( m21, m11 );

+

+			}

+

+		} else if ( order === 'ZYX' ) {

+

+			this.y = Math.asin( - clamp( m31 ) );

+

+			if ( Math.abs( m31 ) < 0.99999 ) {

+

+				this.x = Math.atan2( m32, m33 );

+				this.z = Math.atan2( m21, m11 );

+

+			} else {

+

+				this.x = 0;

+				this.z = Math.atan2( - m12, m22 );

+

+			}

+

+		} else if ( order === 'YZX' ) {

+

+			this.z = Math.asin( clamp( m21 ) );

+

+			if ( Math.abs( m21 ) < 0.99999 ) {

+

+				this.x = Math.atan2( - m23, m22 );

+				this.y = Math.atan2( - m31, m11 );

+

+			} else {

+

+				this.x = 0;

+				this.y = Math.atan2( m13, m33 );

+

+			}

+

+		} else if ( order === 'XZY' ) {

+

+			this.z = Math.asin( - clamp( m12 ) );

+

+			if ( Math.abs( m12 ) < 0.99999 ) {

+

+				this.x = Math.atan2( m32, m22 );

+				this.y = Math.atan2( m13, m11 );

+

+			} else {

+

+				this.x = Math.atan2( - m23, m33 );

+				this.y = 0;

+

+			}

+

+		}

+

+		return this;

+

+	},

+

+	setEulerFromQuaternion: function ( q, order ) {

+

+		// q is assumed to be normalized

+

+		// clamp, to handle numerical problems

+

+		function clamp( x ) {

+

+			return Math.min( Math.max( x, -1 ), 1 );

+

+		}

+

+		// http://www.mathworks.com/matlabcentral/fileexchange/20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/content/SpinCalc.m

+

+		var sqx = q.x * q.x;

+		var sqy = q.y * q.y;

+		var sqz = q.z * q.z;

+		var sqw = q.w * q.w;

+

+		if ( order === undefined || order === 'XYZ' ) {

+

+			this.x = Math.atan2( 2 * ( q.x * q.w - q.y * q.z ), ( sqw - sqx - sqy + sqz ) );

+			this.y = Math.asin(  clamp( 2 * ( q.x * q.z + q.y * q.w ) ) );

+			this.z = Math.atan2( 2 * ( q.z * q.w - q.x * q.y ), ( sqw + sqx - sqy - sqz ) );

+

+		} else if ( order ===  'YXZ' ) {

+

+			this.x = Math.asin(  clamp( 2 * ( q.x * q.w - q.y * q.z ) ) );

+			this.y = Math.atan2( 2 * ( q.x * q.z + q.y * q.w ), ( sqw - sqx - sqy + sqz ) );

+			this.z = Math.atan2( 2 * ( q.x * q.y + q.z * q.w ), ( sqw - sqx + sqy - sqz ) );

+

+		} else if ( order === 'ZXY' ) {

+

+			this.x = Math.asin(  clamp( 2 * ( q.x * q.w + q.y * q.z ) ) );

+			this.y = Math.atan2( 2 * ( q.y * q.w - q.z * q.x ), ( sqw - sqx - sqy + sqz ) );

+			this.z = Math.atan2( 2 * ( q.z * q.w - q.x * q.y ), ( sqw - sqx + sqy - sqz ) );

+

+		} else if ( order === 'ZYX' ) {

+

+			this.x = Math.atan2( 2 * ( q.x * q.w + q.z * q.y ), ( sqw - sqx - sqy + sqz ) );

+			this.y = Math.asin(  clamp( 2 * ( q.y * q.w - q.x * q.z ) ) );

+			this.z = Math.atan2( 2 * ( q.x * q.y + q.z * q.w ), ( sqw + sqx - sqy - sqz ) );

+

+		} else if ( order === 'YZX' ) {

+

+			this.x = Math.atan2( 2 * ( q.x * q.w - q.z * q.y ), ( sqw - sqx + sqy - sqz ) );

+			this.y = Math.atan2( 2 * ( q.y * q.w - q.x * q.z ), ( sqw + sqx - sqy - sqz ) );

+			this.z = Math.asin(  clamp( 2 * ( q.x * q.y + q.z * q.w ) ) );

+

+		} else if ( order === 'XZY' ) {

+

+			this.x = Math.atan2( 2 * ( q.x * q.w + q.y * q.z ), ( sqw - sqx + sqy - sqz ) );

+			this.y = Math.atan2( 2 * ( q.x * q.z + q.y * q.w ), ( sqw + sqx - sqy - sqz ) );

+			this.z = Math.asin(  clamp( 2 * ( q.z * q.w - q.x * q.y ) ) );

+

+		}

+

+		return this;

+

+	},

+

+	getScaleFromMatrix: function ( m ) {

+

+		var sx = this.set( m.elements[0], m.elements[1], m.elements[2] ).length();

+		var sy = this.set( m.elements[4], m.elements[5], m.elements[6] ).length();

+		var sz = this.set( m.elements[8], m.elements[9], m.elements[10] ).length();

+

+		this.x = sx;

+		this.y = sy;

+		this.z = sz;

+

+		return this;

+	},

+

+	equals: function ( v ) {

+

+		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );

+

+	},

+

+	toArray: function () {

+

+		return [ this.x, this.y, this.z ];

+		

+	},

+

+	clone: function () {

+

+		return new THREE.Vector3( this.x, this.y, this.z );

+

+	}

+

+} );

+/**

+ * @author supereggbert / http://www.paulbrunt.co.uk/

+ * @author philogb / http://blog.thejit.org/

+ * @author mikael emtinger / http://gomo.se/

+ * @author egraether / http://egraether.com/

+ * @author WestLangley / http://github.com/WestLangley

+ */

+

+THREE.Vector4 = function ( x, y, z, w ) {

+

+	this.x = x || 0;

+	this.y = y || 0;

+	this.z = z || 0;

+	this.w = ( w !== undefined ) ? w : 1;

+

+};

+

+THREE.extend( THREE.Vector4.prototype, {

+

+	set: function ( x, y, z, w ) {

+

+		this.x = x;

+		this.y = y;

+		this.z = z;

+		this.w = w;

+

+		return this;

+

+	},

+

+	setX: function ( x ) {

+

+		this.x = x;

+

+		return this;

+

+	},

+

+	setY: function ( y ) {

+

+		this.y = y;

+

+		return this;

+

+	},

+

+	setZ: function ( z ) {

+

+		this.z = z;

+

+		return this;

+

+	},

+

+	setW: function ( w ) {

+

+		this.w = w;

+

+		return this;

+

+	},

+

+	setComponent: function ( index, value ) {

+

+		switch ( index ) {

+

+			case 0: this.x = value; break;

+			case 1: this.y = value; break;

+			case 2: this.z = value; break;

+			case 3: this.w = value; break;

+			default: throw new Error( "index is out of range: " + index );

+

+		}

+

+	},

+

+	getComponent: function ( index ) {

+

+		switch ( index ) {

+

+			case 0: return this.x;

+			case 1: return this.y;

+			case 2: return this.z;

+			case 3: return this.w;

+			default: throw new Error( "index is out of range: " + index );

+

+		}

+

+	},

+

+	copy: function ( v ) {

+

+		this.x = v.x;

+		this.y = v.y;

+		this.z = v.z;

+		this.w = ( v.w !== undefined ) ? v.w : 1;

+

+		return this;

+

+	},

+

+	add: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector4\'s .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );

+			return this.addVectors( v, w );

+

+		}

+

+		this.x += v.x;

+		this.y += v.y;

+		this.z += v.z;

+		this.w += v.w;

+

+		return this;

+

+	},

+

+	addScalar: function ( s ) {

+

+		this.x += s;

+		this.y += s;

+		this.z += s;

+		this.w += s;

+

+		return this;

+

+	},

+

+	addVectors: function ( a, b ) {

+

+		this.x = a.x + b.x;

+		this.y = a.y + b.y;

+		this.z = a.z + b.z;

+		this.w = a.w + b.w;

+

+		return this;

+

+	},

+

+	sub: function ( v, w ) {

+

+		if ( w !== undefined ) {

+

+			console.warn( 'DEPRECATED: Vector4\'s .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );

+			return this.subVectors( v, w );

+

+		}

+

+		this.x -= v.x;

+		this.y -= v.y;

+		this.z -= v.z;

+		this.w -= v.w;

+

+		return this;

+

+	},

+

+	subVectors: function ( a, b ) {

+

+		this.x = a.x - b.x;

+		this.y = a.y - b.y;

+		this.z = a.z - b.z;

+		this.w = a.w - b.w;

+

+		return this;

+

+	},

+

+	multiplyScalar: function ( s ) {

+

+		this.x *= s;

+		this.y *= s;

+		this.z *= s;

+		this.w *= s;

+

+		return this;

+

+	},

+

+	applyMatrix4: function ( m ) {

+

+		var x = this.x;

+		var y = this.y;

+		var z = this.z;

+		var w = this.w;

+

+		var e = m.elements;

+

+		this.x = e[0] * x + e[4] * y + e[8] * z + e[12] * w;

+		this.y = e[1] * x + e[5] * y + e[9] * z + e[13] * w;

+		this.z = e[2] * x + e[6] * y + e[10] * z + e[14] * w;

+		this.w = e[3] * x + e[7] * y + e[11] * z + e[15] * w;

+

+		return this;

+

+	},

+

+	divideScalar: function ( s ) {

+

+		if ( s !== 0 ) {

+

+			this.x /= s;

+			this.y /= s;

+			this.z /= s;

+			this.w /= s;

+

+		} else {

+

+			this.x = 0;

+			this.y = 0;

+			this.z = 0;

+			this.w = 1;

+

+		}

+

+		return this;

+

+	},

+

+	setAxisAngleFromQuaternion: function ( q ) {

+

+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm

+

+		// q is assumed to be normalized

+

+		this.w = 2 * Math.acos( q.w );

+

+		var s = Math.sqrt( 1 - q.w * q.w );

+

+		if ( s < 0.0001 ) {

+

+			 this.x = 1;

+			 this.y = 0;

+			 this.z = 0;

+

+		} else {

+

+			 this.x = q.x / s;

+			 this.y = q.y / s;

+			 this.z = q.z / s;

+

+		}

+

+		return this;

+

+	},

+

+	setAxisAngleFromRotationMatrix: function ( m ) {

+

+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm

+

+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

+

+		var angle, x, y, z,		// variables for result

+			epsilon = 0.01,		// margin to allow for rounding errors

+			epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees

+

+			te = m.elements,

+

+			m11 = te[0], m12 = te[4], m13 = te[8],

+			m21 = te[1], m22 = te[5], m23 = te[9],

+			m31 = te[2], m32 = te[6], m33 = te[10];

+

+		if ( ( Math.abs( m12 - m21 ) < epsilon )

+		  && ( Math.abs( m13 - m31 ) < epsilon )

+		  && ( Math.abs( m23 - m32 ) < epsilon ) ) {

+

+			// singularity found

+			// first check for identity matrix which must have +1 for all terms

+			// in leading diagonal and zero in other terms

+

+			if ( ( Math.abs( m12 + m21 ) < epsilon2 )

+			  && ( Math.abs( m13 + m31 ) < epsilon2 )

+			  && ( Math.abs( m23 + m32 ) < epsilon2 )

+			  && ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {

+

+				// this singularity is identity matrix so angle = 0

+

+				this.set( 1, 0, 0, 0 );

+

+				return this; // zero angle, arbitrary axis

+

+			}

+

+			// otherwise this singularity is angle = 180

+

+			angle = Math.PI;

+

+			var xx = ( m11 + 1 ) / 2;

+			var yy = ( m22 + 1 ) / 2;

+			var zz = ( m33 + 1 ) / 2;

+			var xy = ( m12 + m21 ) / 4;

+			var xz = ( m13 + m31 ) / 4;

+			var yz = ( m23 + m32 ) / 4;

+

+			if ( ( xx > yy ) && ( xx > zz ) ) { // m11 is the largest diagonal term

+

+				if ( xx < epsilon ) {

+

+					x = 0;

+					y = 0.707106781;

+					z = 0.707106781;

+

+				} else {

+

+					x = Math.sqrt( xx );

+					y = xy / x;

+					z = xz / x;

+

+				}

+

+			} else if ( yy > zz ) { // m22 is the largest diagonal term

+

+				if ( yy < epsilon ) {

+

+					x = 0.707106781;

+					y = 0;

+					z = 0.707106781;

+

+				} else {

+

+					y = Math.sqrt( yy );

+					x = xy / y;

+					z = yz / y;

+

+				}

+

+			} else { // m33 is the largest diagonal term so base result on this

+

+				if ( zz < epsilon ) {

+

+					x = 0.707106781;

+					y = 0.707106781;

+					z = 0;

+

+				} else {

+

+					z = Math.sqrt( zz );

+					x = xz / z;

+					y = yz / z;

+

+				}

+

+			}

+

+			this.set( x, y, z, angle );

+

+			return this; // return 180 deg rotation

+

+		}

+

+		// as we have reached here there are no singularities so we can handle normally

+

+		var s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 )

+						 + ( m13 - m31 ) * ( m13 - m31 )

+						 + ( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize

+

+		if ( Math.abs( s ) < 0.001 ) s = 1;

+

+		// prevent divide by zero, should not happen if matrix is orthogonal and should be

+		// caught by singularity test above, but I've left it in just in case

+

+		this.x = ( m32 - m23 ) / s;

+		this.y = ( m13 - m31 ) / s;

+		this.z = ( m21 - m12 ) / s;

+		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );

+

+		return this;

+

+	},

+

+	min: function ( v ) {

+

+		if ( this.x > v.x ) {

+

+			this.x = v.x;

+

+		}

+

+		if ( this.y > v.y ) {

+

+			this.y = v.y;

+

+		}

+

+		if ( this.z > v.z ) {

+

+			this.z = v.z;

+

+		}

+

+		if ( this.w > v.w ) {

+

+			this.w = v.w;

+

+		}

+

+		return this;

+

+	},

+

+	max: function ( v ) {

+

+		if ( this.x < v.x ) {

+

+			this.x = v.x;

+

+		}

+

+		if ( this.y < v.y ) {

+

+			this.y = v.y;

+

+		}

+

+		if ( this.z < v.z ) {

+

+			this.z = v.z;

+

+		}

+

+		if ( this.w < v.w ) {

+

+			this.w = v.w;

+

+		}

+

+		return this;

+

+	},

+

+	clamp: function ( min, max ) {

+

+		// This function assumes min < max, if this assumption isn't true it will not operate correctly

+

+		if ( this.x < min.x ) {

+

+			this.x = min.x;

+

+		} else if ( this.x > max.x ) {

+

+			this.x = max.x;

+

+		}

+

+		if ( this.y < min.y ) {

+

+			this.y = min.y;

+

+		} else if ( this.y > max.y ) {

+

+			this.y = max.y;

+

+		}

+

+		if ( this.z < min.z ) {

+

+			this.z = min.z;

+

+		} else if ( this.z > max.z ) {

+

+			this.z = max.z;

+

+		}

+

+		if ( this.w < min.w ) {

+

+			this.w = min.w;

+

+		} else if ( this.w > max.w ) {

+

+			this.w = max.w;

+

+		}

+

+		return this;

+

+	},

+

+	negate: function() {

+

+		return this.multiplyScalar( -1 );

+

+	},

+

+	dot: function ( v ) {

+

+		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;

+

+	},

+

+	lengthSq: function () {

+

+		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;

+

+	},

+

+	length: function () {

+

+		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

+

+	},

+

+	lengthManhattan: function () {

+

+		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );

+

+	},

+

+	normalize: function () {

+

+		return this.divideScalar( this.length() );

+

+	},

+

+	setLength: function ( l ) {

+

+		var oldLength = this.length();

+

+		if ( oldLength !== 0 && l !== oldLength ) {

+

+			this.multiplyScalar( l / oldLength );

+		}

+

+		return this;

+

+	},

+

+	lerp: function ( v, alpha ) {

+

+		this.x += ( v.x - this.x ) * alpha;

+		this.y += ( v.y - this.y ) * alpha;

+		this.z += ( v.z - this.z ) * alpha;

+		this.w += ( v.w - this.w ) * alpha;

+

+		return this;

+

+	},

+

+	equals: function ( v ) {

+

+		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );

+

+	},

+

+	toArray: function () {

+

+		return [ this.x, this.y, this.z, this.w ];

+		

+	},

+

+	clone: function () {

+

+		return new THREE.Vector4( this.x, this.y, this.z, this.w );

+

+	}

+

+} );

+/**

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Box2 = function ( min, max ) {

+

+	this.min = ( min !== undefined ) ? min : new THREE.Vector2( Infinity, Infinity );

+	this.max = ( max !== undefined ) ? max : new THREE.Vector2( -Infinity, -Infinity );

+

+};

+

+THREE.extend( THREE.Box2.prototype, {

+

+	set: function ( min, max ) {

+

+		this.min.copy( min );

+		this.max.copy( max );

+

+		return this;

+

+	},

+

+	setFromPoints: function ( points ) {

+

+		if ( points.length > 0 ) {

+

+			var point = points[ 0 ];

+

+			this.min.copy( point );

+			this.max.copy( point );

+

+			for ( var i = 1, il = points.length; i < il; i ++ ) {

+

+				point = points[ i ];

+

+				if ( point.x < this.min.x ) {

+

+					this.min.x = point.x;

+

+				} else if ( point.x > this.max.x ) {

+

+					this.max.x = point.x;

+

+				}

+

+				if ( point.y < this.min.y ) {

+

+					this.min.y = point.y;

+

+				} else if ( point.y > this.max.y ) {

+

+					this.max.y = point.y;

+

+				}

+

+			}

+

+		} else {

+

+			this.makeEmpty();

+

+		}

+

+		return this;

+

+	},

+

+	setFromCenterAndSize: function() {

+

+		var v1 = new THREE.Vector2();

+

+		return function ( center, size ) {

+

+			var halfSize = v1.copy( size ).multiplyScalar( 0.5 );

+			this.min.copy( center ).sub( halfSize );

+			this.max.copy( center ).add( halfSize );

+

+			return this;

+

+		};

+

+	}(),

+

+	copy: function ( box ) {

+

+		this.min.copy( box.min );

+		this.max.copy( box.max );

+

+		return this;

+

+	},

+

+	makeEmpty: function () {

+

+		this.min.x = this.min.y = Infinity;

+		this.max.x = this.max.y = -Infinity;

+

+		return this;

+

+	},

+

+	empty: function () {

+

+		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

+

+		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );

+

+	},

+

+	center: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector2();

+		return result.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

+

+	},

+

+	size: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector2();

+		return result.subVectors( this.max, this.min );

+

+	},

+

+	expandByPoint: function ( point ) {

+

+		this.min.min( point );

+		this.max.max( point );

+

+		return this;

+	},

+

+	expandByVector: function ( vector ) {

+

+		this.min.sub( vector );

+		this.max.add( vector );

+

+		return this;

+	},

+

+	expandByScalar: function ( scalar ) {

+

+		this.min.addScalar( -scalar );

+		this.max.addScalar( scalar );

+

+		return this;

+	},

+

+	containsPoint: function ( point ) {

+

+		if ( point.x < this.min.x || point.x > this.max.x ||

+		     point.y < this.min.y || point.y > this.max.y ) {

+

+			return false;

+

+		}

+

+		return true;

+

+	},

+

+	containsBox: function ( box ) {

+

+		if ( ( this.min.x <= box.min.x ) && ( box.max.x <= this.max.x ) &&

+		     ( this.min.y <= box.min.y ) && ( box.max.y <= this.max.y ) ) {

+

+			return true;

+

+		}

+

+		return false;

+

+	},

+

+	getParameter: function ( point ) {

+

+		// This can potentially have a divide by zero if the box

+		// has a size dimension of 0.

+

+		return new THREE.Vector2(

+			( point.x - this.min.x ) / ( this.max.x - this.min.x ),

+			( point.y - this.min.y ) / ( this.max.y - this.min.y )

+		);

+

+	},

+

+	isIntersectionBox: function ( box ) {

+

+		// using 6 splitting planes to rule out intersections.

+

+		if ( box.max.x < this.min.x || box.min.x > this.max.x ||

+		     box.max.y < this.min.y || box.min.y > this.max.y ) {

+

+			return false;

+

+		}

+

+		return true;

+

+	},

+

+	clampPoint: function ( point, optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector2();

+		return result.copy( point ).clamp( this.min, this.max );

+

+	},

+

+	distanceToPoint: function() {

+

+		var v1 = new THREE.Vector2();

+

+		return function ( point ) {

+

+			var clampedPoint = v1.copy( point ).clamp( this.min, this.max );

+			return clampedPoint.sub( point ).length();

+

+		};

+

+	}(),

+

+	intersect: function ( box ) {

+

+		this.min.max( box.min );

+		this.max.min( box.max );

+

+		return this;

+

+	},

+

+	union: function ( box ) {

+

+		this.min.min( box.min );

+		this.max.max( box.max );

+

+		return this;

+

+	},

+

+	translate: function ( offset ) {

+

+		this.min.add( offset );

+		this.max.add( offset );

+

+		return this;

+

+	},

+

+	equals: function ( box ) {

+

+		return box.min.equals( this.min ) && box.max.equals( this.max );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Box2().copy( this );

+

+	}

+

+} );

+/**

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Box3 = function ( min, max ) {

+

+	this.min = ( min !== undefined ) ? min : new THREE.Vector3( Infinity, Infinity, Infinity );

+	this.max = ( max !== undefined ) ? max : new THREE.Vector3( -Infinity, -Infinity, -Infinity );

+

+};

+

+THREE.extend( THREE.Box3.prototype, {

+

+	set: function ( min, max ) {

+

+		this.min.copy( min );

+		this.max.copy( max );

+

+		return this;

+

+	},

+

+	setFromPoints: function ( points ) {

+

+		if ( points.length > 0 ) {

+

+			var point = points[ 0 ];

+

+			this.min.copy( point );

+			this.max.copy( point );

+

+			for ( var i = 1, il = points.length; i < il; i ++ ) {

+

+				point = points[ i ];

+

+				if ( point.x < this.min.x ) {

+

+					this.min.x = point.x;

+

+				} else if ( point.x > this.max.x ) {

+

+					this.max.x = point.x;

+

+				}

+

+				if ( point.y < this.min.y ) {

+

+					this.min.y = point.y;

+

+				} else if ( point.y > this.max.y ) {

+

+					this.max.y = point.y;

+

+				}

+

+				if ( point.z < this.min.z ) {

+

+					this.min.z = point.z;

+

+				} else if ( point.z > this.max.z ) {

+

+					this.max.z = point.z;

+

+				}

+

+			}

+

+		} else {

+

+			this.makeEmpty();

+

+		}

+

+		return this;

+

+	},

+

+	setFromCenterAndSize: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( center, size ) {

+

+			var halfSize = v1.copy( size ).multiplyScalar( 0.5 );

+

+			this.min.copy( center ).sub( halfSize );

+			this.max.copy( center ).add( halfSize );

+

+			return this;

+

+		};

+

+	}(),

+

+	copy: function ( box ) {

+

+		this.min.copy( box.min );

+		this.max.copy( box.max );

+

+		return this;

+

+	},

+

+	makeEmpty: function () {

+

+		this.min.x = this.min.y = this.min.z = Infinity;

+		this.max.x = this.max.y = this.max.z = -Infinity;

+

+		return this;

+

+	},

+

+	empty: function () {

+

+		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

+

+		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );

+

+	},

+

+	center: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+		return result.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

+

+	},

+

+	size: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+		return result.subVectors( this.max, this.min );

+

+	},

+

+	expandByPoint: function ( point ) {

+

+		this.min.min( point );

+		this.max.max( point );

+

+		return this;

+

+	},

+

+	expandByVector: function ( vector ) {

+

+		this.min.sub( vector );

+		this.max.add( vector );

+

+		return this;

+

+	},

+

+	expandByScalar: function ( scalar ) {

+

+		this.min.addScalar( -scalar );

+		this.max.addScalar( scalar );

+

+		return this;

+

+	},

+

+	containsPoint: function ( point ) {

+

+		if ( point.x < this.min.x || point.x > this.max.x ||

+		     point.y < this.min.y || point.y > this.max.y ||

+		     point.z < this.min.z || point.z > this.max.z ) {

+

+			return false;

+

+		}

+

+		return true;

+

+	},

+

+	containsBox: function ( box ) {

+

+		if ( ( this.min.x <= box.min.x ) && ( box.max.x <= this.max.x ) &&

+			 ( this.min.y <= box.min.y ) && ( box.max.y <= this.max.y ) &&

+			 ( this.min.z <= box.min.z ) && ( box.max.z <= this.max.z ) ) {

+

+			return true;

+

+		}

+

+		return false;

+

+	},

+

+	getParameter: function ( point ) {

+

+		// This can potentially have a divide by zero if the box

+		// has a size dimension of 0.

+

+		return new THREE.Vector3(

+			( point.x - this.min.x ) / ( this.max.x - this.min.x ),

+			( point.y - this.min.y ) / ( this.max.y - this.min.y ),

+			( point.z - this.min.z ) / ( this.max.z - this.min.z )

+		);

+

+	},

+

+	isIntersectionBox: function ( box ) {

+

+		// using 6 splitting planes to rule out intersections.

+

+		if ( box.max.x < this.min.x || box.min.x > this.max.x ||

+		     box.max.y < this.min.y || box.min.y > this.max.y ||

+		     box.max.z < this.min.z || box.min.z > this.max.z ) {

+

+			return false;

+

+		}

+

+		return true;

+

+	},

+

+	clampPoint: function ( point, optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+		return result.copy( point ).clamp( this.min, this.max );

+

+	},

+

+	distanceToPoint: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( point ) {

+

+			var clampedPoint = v1.copy( point ).clamp( this.min, this.max );

+			return clampedPoint.sub( point ).length();

+

+		};

+

+	}(),

+

+	getBoundingSphere: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( optionalTarget ) {

+

+			var result = optionalTarget || new THREE.Sphere();

+

+			result.center = this.center();

+			result.radius = this.size( v1 ).length() * 0.5;

+

+			return result;

+

+		};

+

+	}(),

+

+	intersect: function ( box ) {

+

+		this.min.max( box.min );

+		this.max.min( box.max );

+

+		return this;

+

+	},

+

+	union: function ( box ) {

+

+		this.min.min( box.min );

+		this.max.max( box.max );

+

+		return this;

+

+	},

+

+	applyMatrix4: function() {

+

+		var points = [

+			new THREE.Vector3(),

+			new THREE.Vector3(),

+			new THREE.Vector3(),

+			new THREE.Vector3(),

+			new THREE.Vector3(),

+			new THREE.Vector3(),

+			new THREE.Vector3(),

+			new THREE.Vector3()

+			];

+

+		return function ( matrix ) {

+

+			// NOTE: I am using a binary pattern to specify all 2^3 combinations below

+			points[0].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000

+			points[1].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001

+			points[2].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010

+			points[3].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011

+			points[4].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100

+			points[5].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101

+			points[6].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110

+			points[7].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix );  // 111

+

+			this.makeEmpty();

+			this.setFromPoints( points );

+

+			return this;

+

+		};

+

+	}(),

+

+	translate: function ( offset ) {

+

+		this.min.add( offset );

+		this.max.add( offset );

+

+		return this;

+

+	},

+

+	equals: function ( box ) {

+

+		return box.min.equals( this.min ) && box.max.equals( this.max );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Box3().copy( this );

+

+	}

+

+} );

+/**

+ * @author alteredq / http://alteredqualia.com/

+ * @author WestLangley / http://github.com/WestLangley

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Matrix3 = function ( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {

+

+	this.elements = new Float32Array(9);

+

+	this.set(

+

+		( n11 !== undefined ) ? n11 : 1, n12 || 0, n13 || 0,

+		n21 || 0, ( n22 !== undefined ) ? n22 : 1, n23 || 0,

+		n31 || 0, n32 || 0, ( n33 !== undefined ) ? n33 : 1

+

+	);

+};

+

+THREE.extend( THREE.Matrix3.prototype, {

+

+	set: function ( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {

+

+		var te = this.elements;

+

+		te[0] = n11; te[3] = n12; te[6] = n13;

+		te[1] = n21; te[4] = n22; te[7] = n23;

+		te[2] = n31; te[5] = n32; te[8] = n33;

+

+		return this;

+

+	},

+

+	identity: function () {

+

+		this.set(

+

+			1, 0, 0,

+			0, 1, 0,

+			0, 0, 1

+

+		);

+

+		return this;

+

+	},

+

+	copy: function ( m ) {

+

+		var me = m.elements;

+

+		this.set(

+

+			me[0], me[3], me[6],

+			me[1], me[4], me[7],

+			me[2], me[5], me[8]

+

+		);

+

+		return this;

+

+	},

+

+	multiplyVector3: function ( vector ) {

+

+		console.warn( 'DEPRECATED: Matrix3\'s .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );

+		return vector.applyMatrix3( this );

+

+	},

+

+	multiplyVector3Array: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( a ) {

+

+			for ( var i = 0, il = a.length; i < il; i += 3 ) {

+

+				v1.x = a[ i ];

+				v1.y = a[ i + 1 ];

+				v1.z = a[ i + 2 ];

+

+				v1.applyMatrix3(this);

+

+				a[ i ]     = v1.x;

+				a[ i + 1 ] = v1.y;

+				a[ i + 2 ] = v1.z;

+

+			}

+

+			return a;

+

+		};

+

+	}(),

+

+	multiplyScalar: function ( s ) {

+

+		var te = this.elements;

+

+		te[0] *= s; te[3] *= s; te[6] *= s;

+		te[1] *= s; te[4] *= s; te[7] *= s;

+		te[2] *= s; te[5] *= s; te[8] *= s;

+

+		return this;

+

+	},

+

+	determinant: function () {

+

+		var te = this.elements;

+

+		var a = te[0], b = te[1], c = te[2],

+			d = te[3], e = te[4], f = te[5],

+			g = te[6], h = te[7], i = te[8];

+

+		return a*e*i - a*f*h - b*d*i + b*f*g + c*d*h - c*e*g;

+

+	},

+

+	getInverse: function ( matrix, throwOnInvertible ) {

+

+		// input: THREE.Matrix4

+		// ( based on http://code.google.com/p/webgl-mjs/ )

+

+		var me = matrix.elements;

+		var te = this.elements;

+

+		te[ 0 ] =   me[10] * me[5] - me[6] * me[9];

+		te[ 1 ] = - me[10] * me[1] + me[2] * me[9];

+		te[ 2 ] =   me[6] * me[1] - me[2] * me[5];

+		te[ 3 ] = - me[10] * me[4] + me[6] * me[8];

+		te[ 4 ] =   me[10] * me[0] - me[2] * me[8];

+		te[ 5 ] = - me[6] * me[0] + me[2] * me[4];

+		te[ 6 ] =   me[9] * me[4] - me[5] * me[8];

+		te[ 7 ] = - me[9] * me[0] + me[1] * me[8];

+		te[ 8 ] =   me[5] * me[0] - me[1] * me[4];

+

+		var det = me[ 0 ] * te[ 0 ] + me[ 1 ] * te[ 3 ] + me[ 2 ] * te[ 6 ];

+

+		// no inverse

+

+		if ( det === 0 ) {

+

+			var msg = "Matrix3.getInverse(): can't invert matrix, determinant is 0";

+

+			if ( throwOnInvertible || false ) {

+

+				throw new Error( msg ); 

+

+			} else {

+

+				console.warn( msg );

+

+			}

+

+			this.identity();

+

+			return this;

+

+		}

+

+		this.multiplyScalar( 1.0 / det );

+

+		return this;

+

+	},

+

+	transpose: function () {

+

+		var tmp, m = this.elements;

+

+		tmp = m[1]; m[1] = m[3]; m[3] = tmp;

+		tmp = m[2]; m[2] = m[6]; m[6] = tmp;

+		tmp = m[5]; m[5] = m[7]; m[7] = tmp;

+

+		return this;

+

+	},

+

+	getNormalMatrix: function ( m ) {

+

+		// input: THREE.Matrix4

+

+		this.getInverse( m ).transpose();

+

+		return this;

+

+	},

+

+	transposeIntoArray: function ( r ) {

+

+		var m = this.elements;

+

+		r[ 0 ] = m[ 0 ];

+		r[ 1 ] = m[ 3 ];

+		r[ 2 ] = m[ 6 ];

+		r[ 3 ] = m[ 1 ];

+		r[ 4 ] = m[ 4 ];

+		r[ 5 ] = m[ 7 ];

+		r[ 6 ] = m[ 2 ];

+		r[ 7 ] = m[ 5 ];

+		r[ 8 ] = m[ 8 ];

+

+		return this;

+

+	},

+

+	clone: function () {

+

+		var te = this.elements;

+

+		return new THREE.Matrix3(

+

+			te[0], te[3], te[6],

+			te[1], te[4], te[7],

+			te[2], te[5], te[8]

+

+		);

+

+	}

+

+} );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author supereggbert / http://www.paulbrunt.co.uk/

+ * @author philogb / http://blog.thejit.org/

+ * @author jordi_ros / http://plattsoft.com

+ * @author D1plo1d / http://github.com/D1plo1d

+ * @author alteredq / http://alteredqualia.com/

+ * @author mikael emtinger / http://gomo.se/

+ * @author timknip / http://www.floorplanner.com/

+ * @author bhouston / http://exocortex.com

+ */

+

+

+THREE.Matrix4 = function ( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {

+

+	var te = this.elements = new Float32Array( 16 );

+

+	// TODO: if n11 is undefined, then just set to identity, otherwise copy all other values into matrix

+	//   we should not support semi specification of Matrix4, it is just weird.

+

+	te[0] = ( n11 !== undefined ) ? n11 : 1; te[4] = n12 || 0; te[8] = n13 || 0; te[12] = n14 || 0;

+	te[1] = n21 || 0; te[5] = ( n22 !== undefined ) ? n22 : 1; te[9] = n23 || 0; te[13] = n24 || 0;

+	te[2] = n31 || 0; te[6] = n32 || 0; te[10] = ( n33 !== undefined ) ? n33 : 1; te[14] = n34 || 0;

+	te[3] = n41 || 0; te[7] = n42 || 0; te[11] = n43 || 0; te[15] = ( n44 !== undefined ) ? n44 : 1;

+

+};

+

+THREE.extend( THREE.Matrix4.prototype, {

+

+	set: function ( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {

+

+		var te = this.elements;

+

+		te[0] = n11; te[4] = n12; te[8] = n13; te[12] = n14;

+		te[1] = n21; te[5] = n22; te[9] = n23; te[13] = n24;

+		te[2] = n31; te[6] = n32; te[10] = n33; te[14] = n34;

+		te[3] = n41; te[7] = n42; te[11] = n43; te[15] = n44;

+

+		return this;

+

+	},

+

+	identity: function () {

+

+		this.set(

+

+			1, 0, 0, 0,

+			0, 1, 0, 0,

+			0, 0, 1, 0,

+			0, 0, 0, 1

+

+		);

+

+		return this;

+

+	},

+

+	copy: function ( m ) {

+

+		var me = m.elements;

+

+		this.set(

+

+			me[0], me[4], me[8], me[12],

+			me[1], me[5], me[9], me[13],

+			me[2], me[6], me[10], me[14],

+			me[3], me[7], me[11], me[15]

+

+		);

+

+		return this;

+

+	},

+

+	setRotationFromEuler: function ( v, order ) {

+

+		var te = this.elements;

+

+		var x = v.x, y = v.y, z = v.z;

+		var a = Math.cos( x ), b = Math.sin( x );

+		var c = Math.cos( y ), d = Math.sin( y );

+		var e = Math.cos( z ), f = Math.sin( z );

+

+		if ( order === undefined || order === 'XYZ' ) {

+

+			var ae = a * e, af = a * f, be = b * e, bf = b * f;

+

+			te[0] = c * e;

+			te[4] = - c * f;

+			te[8] = d;

+

+			te[1] = af + be * d;

+			te[5] = ae - bf * d;

+			te[9] = - b * c;

+

+			te[2] = bf - ae * d;

+			te[6] = be + af * d;

+			te[10] = a * c;

+

+		} else if ( order === 'YXZ' ) {

+

+			var ce = c * e, cf = c * f, de = d * e, df = d * f;

+

+			te[0] = ce + df * b;

+			te[4] = de * b - cf;

+			te[8] = a * d;

+

+			te[1] = a * f;

+			te[5] = a * e;

+			te[9] = - b;

+

+			te[2] = cf * b - de;

+			te[6] = df + ce * b;

+			te[10] = a * c;

+

+		} else if ( order === 'ZXY' ) {

+

+			var ce = c * e, cf = c * f, de = d * e, df = d * f;

+

+			te[0] = ce - df * b;

+			te[4] = - a * f;

+			te[8] = de + cf * b;

+

+			te[1] = cf + de * b;

+			te[5] = a * e;

+			te[9] = df - ce * b;

+

+			te[2] = - a * d;

+			te[6] = b;

+			te[10] = a * c;

+

+		} else if ( order === 'ZYX' ) {

+

+			var ae = a * e, af = a * f, be = b * e, bf = b * f;

+

+			te[0] = c * e;

+			te[4] = be * d - af;

+			te[8] = ae * d + bf;

+

+			te[1] = c * f;

+			te[5] = bf * d + ae;

+			te[9] = af * d - be;

+

+			te[2] = - d;

+			te[6] = b * c;

+			te[10] = a * c;

+

+		} else if ( order === 'YZX' ) {

+

+			var ac = a * c, ad = a * d, bc = b * c, bd = b * d;

+

+			te[0] = c * e;

+			te[4] = bd - ac * f;

+			te[8] = bc * f + ad;

+

+			te[1] = f;

+			te[5] = a * e;

+			te[9] = - b * e;

+

+			te[2] = - d * e;

+			te[6] = ad * f + bc;

+			te[10] = ac - bd * f;

+

+		} else if ( order === 'XZY' ) {

+

+			var ac = a * c, ad = a * d, bc = b * c, bd = b * d;

+

+			te[0] = c * e;

+			te[4] = - f;

+			te[8] = d * e;

+

+			te[1] = ac * f + bd;

+			te[5] = a * e;

+			te[9] = ad * f - bc;

+

+			te[2] = bc * f - ad;

+			te[6] = b * e;

+			te[10] = bd * f + ac;

+

+		}

+

+		return this;

+

+	},

+

+	setRotationFromQuaternion: function ( q ) {

+

+		var te = this.elements;

+

+		var x = q.x, y = q.y, z = q.z, w = q.w;

+		var x2 = x + x, y2 = y + y, z2 = z + z;

+		var xx = x * x2, xy = x * y2, xz = x * z2;

+		var yy = y * y2, yz = y * z2, zz = z * z2;

+		var wx = w * x2, wy = w * y2, wz = w * z2;

+

+		te[0] = 1 - ( yy + zz );

+		te[4] = xy - wz;

+		te[8] = xz + wy;

+

+		te[1] = xy + wz;

+		te[5] = 1 - ( xx + zz );

+		te[9] = yz - wx;

+

+		te[2] = xz - wy;

+		te[6] = yz + wx;

+		te[10] = 1 - ( xx + yy );

+

+		return this;

+

+	},

+

+	lookAt: function() {

+

+		var x = new THREE.Vector3();

+		var y = new THREE.Vector3();

+		var z = new THREE.Vector3();

+

+		return function ( eye, target, up ) {

+

+			var te = this.elements;

+

+			z.subVectors( eye, target ).normalize();

+

+			if ( z.length() === 0 ) {

+

+				z.z = 1;

+

+			}

+

+			x.crossVectors( up, z ).normalize();

+

+			if ( x.length() === 0 ) {

+

+				z.x += 0.0001;

+				x.crossVectors( up, z ).normalize();

+

+			}

+

+			y.crossVectors( z, x );

+

+

+			te[0] = x.x; te[4] = y.x; te[8] = z.x;

+			te[1] = x.y; te[5] = y.y; te[9] = z.y;

+			te[2] = x.z; te[6] = y.z; te[10] = z.z;

+

+			return this;

+

+		};

+

+	}(),

+

+	multiply: function ( m, n ) {

+

+		if ( n !== undefined ) {

+

+			console.warn( 'DEPRECATED: Matrix4\'s .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );

+			return this.multiplyMatrices( m, n );

+

+		}

+

+		return this.multiplyMatrices( this, m );

+

+	},

+

+	multiplyMatrices: function ( a, b ) {

+

+		var ae = a.elements;

+		var be = b.elements;

+		var te = this.elements;

+

+		var a11 = ae[0], a12 = ae[4], a13 = ae[8], a14 = ae[12];

+		var a21 = ae[1], a22 = ae[5], a23 = ae[9], a24 = ae[13];

+		var a31 = ae[2], a32 = ae[6], a33 = ae[10], a34 = ae[14];

+		var a41 = ae[3], a42 = ae[7], a43 = ae[11], a44 = ae[15];

+

+		var b11 = be[0], b12 = be[4], b13 = be[8], b14 = be[12];

+		var b21 = be[1], b22 = be[5], b23 = be[9], b24 = be[13];

+		var b31 = be[2], b32 = be[6], b33 = be[10], b34 = be[14];

+		var b41 = be[3], b42 = be[7], b43 = be[11], b44 = be[15];

+

+		te[0] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;

+		te[4] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;

+		te[8] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;

+		te[12] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;

+

+		te[1] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;

+		te[5] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;

+		te[9] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;

+		te[13] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;

+

+		te[2] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;

+		te[6] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;

+		te[10] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;

+		te[14] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;

+

+		te[3] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;

+		te[7] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;

+		te[11] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;

+		te[15] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;

+

+		return this;

+

+	},

+

+	multiplyToArray: function ( a, b, r ) {

+

+		var te = this.elements;

+

+		this.multiplyMatrices( a, b );

+

+		r[ 0 ] = te[0]; r[ 1 ] = te[1]; r[ 2 ] = te[2]; r[ 3 ] = te[3];

+		r[ 4 ] = te[4]; r[ 5 ] = te[5]; r[ 6 ] = te[6]; r[ 7 ] = te[7];

+		r[ 8 ]  = te[8]; r[ 9 ]  = te[9]; r[ 10 ] = te[10]; r[ 11 ] = te[11];

+		r[ 12 ] = te[12]; r[ 13 ] = te[13]; r[ 14 ] = te[14]; r[ 15 ] = te[15];

+

+		return this;

+

+	},

+

+	multiplyScalar: function ( s ) {

+

+		var te = this.elements;

+

+		te[0] *= s; te[4] *= s; te[8] *= s; te[12] *= s;

+		te[1] *= s; te[5] *= s; te[9] *= s; te[13] *= s;

+		te[2] *= s; te[6] *= s; te[10] *= s; te[14] *= s;

+		te[3] *= s; te[7] *= s; te[11] *= s; te[15] *= s;

+

+		return this;

+

+	},

+

+	multiplyVector3: function ( vector ) {

+

+		console.warn( 'DEPRECATED: Matrix4\'s .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) or vector.applyProjection( matrix ) instead.' );

+		return vector.applyProjection( this );

+

+	},

+

+	multiplyVector4: function ( vector ) {

+

+		console.warn( 'DEPRECATED: Matrix4\'s .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );

+		return vector.applyMatrix4( this );

+

+	},

+

+	multiplyVector3Array: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( a ) {

+

+			for ( var i = 0, il = a.length; i < il; i += 3 ) {

+

+				v1.x = a[ i ];

+				v1.y = a[ i + 1 ];

+				v1.z = a[ i + 2 ];

+

+				v1.applyProjection( this );

+

+				a[ i ]     = v1.x;

+				a[ i + 1 ] = v1.y;

+				a[ i + 2 ] = v1.z;

+

+			}

+

+			return a;

+

+		};

+

+	}(),

+

+	rotateAxis: function ( v ) {

+

+		var te = this.elements;

+		var vx = v.x, vy = v.y, vz = v.z;

+

+		v.x = vx * te[0] + vy * te[4] + vz * te[8];

+		v.y = vx * te[1] + vy * te[5] + vz * te[9];

+		v.z = vx * te[2] + vy * te[6] + vz * te[10];

+

+		v.normalize();

+

+		return v;

+

+	},

+

+	crossVector: function ( a ) {

+

+		var te = this.elements;

+		var v = new THREE.Vector4();

+

+		v.x = te[0] * a.x + te[4] * a.y + te[8] * a.z + te[12] * a.w;

+		v.y = te[1] * a.x + te[5] * a.y + te[9] * a.z + te[13] * a.w;

+		v.z = te[2] * a.x + te[6] * a.y + te[10] * a.z + te[14] * a.w;

+

+		v.w = ( a.w ) ? te[3] * a.x + te[7] * a.y + te[11] * a.z + te[15] * a.w : 1;

+

+		return v;

+

+	},

+

+	determinant: function () {

+

+		var te = this.elements;

+

+		var n11 = te[0], n12 = te[4], n13 = te[8], n14 = te[12];

+		var n21 = te[1], n22 = te[5], n23 = te[9], n24 = te[13];

+		var n31 = te[2], n32 = te[6], n33 = te[10], n34 = te[14];

+		var n41 = te[3], n42 = te[7], n43 = te[11], n44 = te[15];

+

+		//TODO: make this more efficient

+		//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )

+

+		return (

+			n41 * (

+				+n14 * n23 * n32

+				-n13 * n24 * n32

+				-n14 * n22 * n33

+				+n12 * n24 * n33

+				+n13 * n22 * n34

+				-n12 * n23 * n34

+			) +

+			n42 * (

+				+n11 * n23 * n34

+				-n11 * n24 * n33

+				+n14 * n21 * n33

+				-n13 * n21 * n34

+				+n13 * n24 * n31

+				-n14 * n23 * n31

+			) +

+			n43 * (

+				+n11 * n24 * n32

+				-n11 * n22 * n34

+				-n14 * n21 * n32

+				+n12 * n21 * n34

+				+n14 * n22 * n31

+				-n12 * n24 * n31

+			) +

+			n44 * (

+				-n13 * n22 * n31

+				-n11 * n23 * n32

+				+n11 * n22 * n33

+				+n13 * n21 * n32

+				-n12 * n21 * n33

+				+n12 * n23 * n31

+			)

+

+		);

+

+	},

+

+	transpose: function () {

+

+		var te = this.elements;

+		var tmp;

+

+		tmp = te[1]; te[1] = te[4]; te[4] = tmp;

+		tmp = te[2]; te[2] = te[8]; te[8] = tmp;

+		tmp = te[6]; te[6] = te[9]; te[9] = tmp;

+

+		tmp = te[3]; te[3] = te[12]; te[12] = tmp;

+		tmp = te[7]; te[7] = te[13]; te[13] = tmp;

+		tmp = te[11]; te[11] = te[14]; te[14] = tmp;

+

+		return this;

+

+	},

+

+	flattenToArray: function ( flat ) {

+

+		var te = this.elements;

+		flat[ 0 ] = te[0]; flat[ 1 ] = te[1]; flat[ 2 ] = te[2]; flat[ 3 ] = te[3];

+		flat[ 4 ] = te[4]; flat[ 5 ] = te[5]; flat[ 6 ] = te[6]; flat[ 7 ] = te[7];

+		flat[ 8 ] = te[8]; flat[ 9 ] = te[9]; flat[ 10 ] = te[10]; flat[ 11 ] = te[11];

+		flat[ 12 ] = te[12]; flat[ 13 ] = te[13]; flat[ 14 ] = te[14]; flat[ 15 ] = te[15];

+

+		return flat;

+

+	},

+

+	flattenToArrayOffset: function( flat, offset ) {

+

+		var te = this.elements;

+		flat[ offset ] = te[0];

+		flat[ offset + 1 ] = te[1];

+		flat[ offset + 2 ] = te[2];

+		flat[ offset + 3 ] = te[3];

+

+		flat[ offset + 4 ] = te[4];

+		flat[ offset + 5 ] = te[5];

+		flat[ offset + 6 ] = te[6];

+		flat[ offset + 7 ] = te[7];

+

+		flat[ offset + 8 ]  = te[8];

+		flat[ offset + 9 ]  = te[9];

+		flat[ offset + 10 ] = te[10];

+		flat[ offset + 11 ] = te[11];

+

+		flat[ offset + 12 ] = te[12];

+		flat[ offset + 13 ] = te[13];

+		flat[ offset + 14 ] = te[14];

+		flat[ offset + 15 ] = te[15];

+

+		return flat;

+

+	},

+

+	getPosition: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function () {

+

+			console.warn( 'DEPRECATED: Matrix4\'s .getPosition() has been removed. Use Vector3.getPositionFromMatrix( matrix ) instead.' );

+

+			var te = this.elements;

+			return v1.set( te[12], te[13], te[14] );

+

+		};

+

+	}(),

+

+	setPosition: function ( v ) {

+

+		var te = this.elements;

+

+		te[12] = v.x;

+		te[13] = v.y;

+		te[14] = v.z;

+

+		return this;

+

+	},

+

+	getInverse: function ( m, throwOnInvertible ) {

+

+		// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm

+		var te = this.elements;

+		var me = m.elements;

+

+		var n11 = me[0], n12 = me[4], n13 = me[8], n14 = me[12];

+		var n21 = me[1], n22 = me[5], n23 = me[9], n24 = me[13];

+		var n31 = me[2], n32 = me[6], n33 = me[10], n34 = me[14];

+		var n41 = me[3], n42 = me[7], n43 = me[11], n44 = me[15];

+

+		te[0] = n23*n34*n42 - n24*n33*n42 + n24*n32*n43 - n22*n34*n43 - n23*n32*n44 + n22*n33*n44;

+		te[4] = n14*n33*n42 - n13*n34*n42 - n14*n32*n43 + n12*n34*n43 + n13*n32*n44 - n12*n33*n44;

+		te[8] = n13*n24*n42 - n14*n23*n42 + n14*n22*n43 - n12*n24*n43 - n13*n22*n44 + n12*n23*n44;

+		te[12] = n14*n23*n32 - n13*n24*n32 - n14*n22*n33 + n12*n24*n33 + n13*n22*n34 - n12*n23*n34;

+		te[1] = n24*n33*n41 - n23*n34*n41 - n24*n31*n43 + n21*n34*n43 + n23*n31*n44 - n21*n33*n44;

+		te[5] = n13*n34*n41 - n14*n33*n41 + n14*n31*n43 - n11*n34*n43 - n13*n31*n44 + n11*n33*n44;

+		te[9] = n14*n23*n41 - n13*n24*n41 - n14*n21*n43 + n11*n24*n43 + n13*n21*n44 - n11*n23*n44;

+		te[13] = n13*n24*n31 - n14*n23*n31 + n14*n21*n33 - n11*n24*n33 - n13*n21*n34 + n11*n23*n34;

+		te[2] = n22*n34*n41 - n24*n32*n41 + n24*n31*n42 - n21*n34*n42 - n22*n31*n44 + n21*n32*n44;

+		te[6] = n14*n32*n41 - n12*n34*n41 - n14*n31*n42 + n11*n34*n42 + n12*n31*n44 - n11*n32*n44;

+		te[10] = n12*n24*n41 - n14*n22*n41 + n14*n21*n42 - n11*n24*n42 - n12*n21*n44 + n11*n22*n44;

+		te[14] = n14*n22*n31 - n12*n24*n31 - n14*n21*n32 + n11*n24*n32 + n12*n21*n34 - n11*n22*n34;

+		te[3] = n23*n32*n41 - n22*n33*n41 - n23*n31*n42 + n21*n33*n42 + n22*n31*n43 - n21*n32*n43;

+		te[7] = n12*n33*n41 - n13*n32*n41 + n13*n31*n42 - n11*n33*n42 - n12*n31*n43 + n11*n32*n43;

+		te[11] = n13*n22*n41 - n12*n23*n41 - n13*n21*n42 + n11*n23*n42 + n12*n21*n43 - n11*n22*n43;

+		te[15] = n12*n23*n31 - n13*n22*n31 + n13*n21*n32 - n11*n23*n32 - n12*n21*n33 + n11*n22*n33;

+

+		var det = me[ 0 ] * te[ 0 ] + me[ 1 ] * te[ 4 ] + me[ 2 ] * te[ 8 ] + me[ 3 ] * te[ 12 ];

+

+		if ( det == 0 ) {

+

+			var msg = "Matrix4.getInverse(): can't invert matrix, determinant is 0";

+

+			if ( throwOnInvertible || false ) {

+

+				throw new Error( msg ); 

+

+			} else {

+

+				console.warn( msg );

+

+			}

+

+			this.identity();

+

+			return this;

+		}

+

+		this.multiplyScalar( 1 / det );

+

+		return this;

+

+	},

+

+	compose: function() {

+

+		var mRotation = new THREE.Matrix4(),

+			mScale = new THREE.Matrix4();

+		

+		return function ( translation, rotation, scale ) {

+

+			var te = this.elements;

+

+			mRotation.identity();

+			mRotation.setRotationFromQuaternion( rotation );

+

+			mScale.makeScale( scale.x, scale.y, scale.z );

+

+			this.multiplyMatrices( mRotation, mScale );

+

+			te[12] = translation.x;

+			te[13] = translation.y;

+			te[14] = translation.z;

+

+			return this;

+

+		};

+

+	}(),

+

+	decompose: function() {

+

+		var x = new THREE.Vector3(),

+			y = new THREE.Vector3(),

+			z = new THREE.Vector3(),

+			matrix = new THREE.Matrix4();

+

+		return function ( translation, rotation, scale ) {

+

+			var te = this.elements;

+

+			// grab the axis vectors

+			x.set( te[0], te[1], te[2] );

+			y.set( te[4], te[5], te[6] );

+			z.set( te[8], te[9], te[10] );

+

+			translation = ( translation instanceof THREE.Vector3 ) ? translation : new THREE.Vector3();

+			rotation = ( rotation instanceof THREE.Quaternion ) ? rotation : new THREE.Quaternion();

+			scale = ( scale instanceof THREE.Vector3 ) ? scale : new THREE.Vector3();

+

+			scale.x = x.length();

+			scale.y = y.length();

+			scale.z = z.length();

+

+			translation.x = te[12];

+			translation.y = te[13];

+			translation.z = te[14];

+

+			// scale the rotation part

+

+			matrix.copy( this );

+

+			matrix.elements[0] /= scale.x;

+			matrix.elements[1] /= scale.x;

+			matrix.elements[2] /= scale.x;

+

+			matrix.elements[4] /= scale.y;

+			matrix.elements[5] /= scale.y;

+			matrix.elements[6] /= scale.y;

+

+			matrix.elements[8] /= scale.z;

+			matrix.elements[9] /= scale.z;

+			matrix.elements[10] /= scale.z;

+

+			rotation.setFromRotationMatrix( matrix );

+

+			return [ translation, rotation, scale ];

+

+		};

+

+	}(),

+

+	extractPosition: function ( m ) {

+

+		var te = this.elements;

+		var me = m.elements;

+

+		te[12] = me[12];

+		te[13] = me[13];

+		te[14] = me[14];

+

+		return this;

+

+	},

+

+	extractRotation: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( m ) {

+

+			var te = this.elements;

+			var me = m.elements;

+

+			var scaleX = 1 / v1.set( me[0], me[1], me[2] ).length();

+			var scaleY = 1 / v1.set( me[4], me[5], me[6] ).length();

+			var scaleZ = 1 / v1.set( me[8], me[9], me[10] ).length();

+

+			te[0] = me[0] * scaleX;

+			te[1] = me[1] * scaleX;

+			te[2] = me[2] * scaleX;

+

+			te[4] = me[4] * scaleY;

+			te[5] = me[5] * scaleY;

+			te[6] = me[6] * scaleY;

+

+			te[8] = me[8] * scaleZ;

+			te[9] = me[9] * scaleZ;

+			te[10] = me[10] * scaleZ;

+

+			return this;

+

+		};

+

+	}(),

+

+	translate: function ( v ) {

+

+		var te = this.elements;

+		var x = v.x, y = v.y, z = v.z;

+

+		te[12] = te[0] * x + te[4] * y + te[8] * z + te[12];

+		te[13] = te[1] * x + te[5] * y + te[9] * z + te[13];

+		te[14] = te[2] * x + te[6] * y + te[10] * z + te[14];

+		te[15] = te[3] * x + te[7] * y + te[11] * z + te[15];

+

+		return this;

+

+	},

+

+	rotateX: function ( angle ) {

+

+		var te = this.elements;

+		var m12 = te[4];

+		var m22 = te[5];

+		var m32 = te[6];

+		var m42 = te[7];

+		var m13 = te[8];

+		var m23 = te[9];

+		var m33 = te[10];

+		var m43 = te[11];

+		var c = Math.cos( angle );

+		var s = Math.sin( angle );

+

+		te[4] = c * m12 + s * m13;

+		te[5] = c * m22 + s * m23;

+		te[6] = c * m32 + s * m33;

+		te[7] = c * m42 + s * m43;

+

+		te[8] = c * m13 - s * m12;

+		te[9] = c * m23 - s * m22;

+		te[10] = c * m33 - s * m32;

+		te[11] = c * m43 - s * m42;

+

+		return this;

+

+	},

+

+	rotateY: function ( angle ) {

+

+		var te = this.elements;

+		var m11 = te[0];

+		var m21 = te[1];

+		var m31 = te[2];

+		var m41 = te[3];

+		var m13 = te[8];

+		var m23 = te[9];

+		var m33 = te[10];

+		var m43 = te[11];

+		var c = Math.cos( angle );

+		var s = Math.sin( angle );

+

+		te[0] = c * m11 - s * m13;

+		te[1] = c * m21 - s * m23;

+		te[2] = c * m31 - s * m33;

+		te[3] = c * m41 - s * m43;

+

+		te[8] = c * m13 + s * m11;

+		te[9] = c * m23 + s * m21;

+		te[10] = c * m33 + s * m31;

+		te[11] = c * m43 + s * m41;

+

+		return this;

+

+	},

+

+	rotateZ: function ( angle ) {

+

+		var te = this.elements;

+		var m11 = te[0];

+		var m21 = te[1];

+		var m31 = te[2];

+		var m41 = te[3];

+		var m12 = te[4];

+		var m22 = te[5];

+		var m32 = te[6];

+		var m42 = te[7];

+		var c = Math.cos( angle );

+		var s = Math.sin( angle );

+

+		te[0] = c * m11 + s * m12;

+		te[1] = c * m21 + s * m22;

+		te[2] = c * m31 + s * m32;

+		te[3] = c * m41 + s * m42;

+

+		te[4] = c * m12 - s * m11;

+		te[5] = c * m22 - s * m21;

+		te[6] = c * m32 - s * m31;

+		te[7] = c * m42 - s * m41;

+

+		return this;

+

+	},

+

+	rotateByAxis: function ( axis, angle ) {

+

+		var te = this.elements;

+

+		// optimize by checking axis

+

+		if ( axis.x === 1 && axis.y === 0 && axis.z === 0 ) {

+

+			return this.rotateX( angle );

+

+		} else if ( axis.x === 0 && axis.y === 1 && axis.z === 0 ) {

+

+			return this.rotateY( angle );

+

+		} else if ( axis.x === 0 && axis.y === 0 && axis.z === 1 ) {

+

+			return this.rotateZ( angle );

+

+		}

+

+		var x = axis.x, y = axis.y, z = axis.z;

+		var n = Math.sqrt(x * x + y * y + z * z);

+

+		x /= n;

+		y /= n;

+		z /= n;

+

+		var xx = x * x, yy = y * y, zz = z * z;

+		var c = Math.cos( angle );

+		var s = Math.sin( angle );

+		var oneMinusCosine = 1 - c;

+		var xy = x * y * oneMinusCosine;

+		var xz = x * z * oneMinusCosine;

+		var yz = y * z * oneMinusCosine;

+		var xs = x * s;

+		var ys = y * s;

+		var zs = z * s;

+

+		var r11 = xx + (1 - xx) * c;

+		var r21 = xy + zs;

+		var r31 = xz - ys;

+		var r12 = xy - zs;

+		var r22 = yy + (1 - yy) * c;

+		var r32 = yz + xs;

+		var r13 = xz + ys;

+		var r23 = yz - xs;

+		var r33 = zz + (1 - zz) * c;

+

+		var m11 = te[0], m21 = te[1], m31 = te[2], m41 = te[3];

+		var m12 = te[4], m22 = te[5], m32 = te[6], m42 = te[7];

+		var m13 = te[8], m23 = te[9], m33 = te[10], m43 = te[11];

+

+		te[0] = r11 * m11 + r21 * m12 + r31 * m13;

+		te[1] = r11 * m21 + r21 * m22 + r31 * m23;

+		te[2] = r11 * m31 + r21 * m32 + r31 * m33;

+		te[3] = r11 * m41 + r21 * m42 + r31 * m43;

+

+		te[4] = r12 * m11 + r22 * m12 + r32 * m13;

+		te[5] = r12 * m21 + r22 * m22 + r32 * m23;

+		te[6] = r12 * m31 + r22 * m32 + r32 * m33;

+		te[7] = r12 * m41 + r22 * m42 + r32 * m43;

+

+		te[8] = r13 * m11 + r23 * m12 + r33 * m13;

+		te[9] = r13 * m21 + r23 * m22 + r33 * m23;

+		te[10] = r13 * m31 + r23 * m32 + r33 * m33;

+		te[11] = r13 * m41 + r23 * m42 + r33 * m43;

+

+		return this;

+

+	},

+

+	scale: function ( v ) {

+

+		var te = this.elements;

+		var x = v.x, y = v.y, z = v.z;

+

+		te[0] *= x; te[4] *= y; te[8] *= z;

+		te[1] *= x; te[5] *= y; te[9] *= z;

+		te[2] *= x; te[6] *= y; te[10] *= z;

+		te[3] *= x; te[7] *= y; te[11] *= z;

+

+		return this;

+

+	},

+

+	getMaxScaleOnAxis: function () {

+

+		var te = this.elements;

+

+		var scaleXSq = te[0] * te[0] + te[1] * te[1] + te[2] * te[2];

+		var scaleYSq = te[4] * te[4] + te[5] * te[5] + te[6] * te[6];

+		var scaleZSq = te[8] * te[8] + te[9] * te[9] + te[10] * te[10];

+

+		return Math.sqrt( Math.max( scaleXSq, Math.max( scaleYSq, scaleZSq ) ) );

+

+	},

+

+	makeTranslation: function ( x, y, z ) {

+

+		this.set(

+

+			1, 0, 0, x,

+			0, 1, 0, y,

+			0, 0, 1, z,

+			0, 0, 0, 1

+

+		);

+

+		return this;

+

+	},

+

+	makeRotationX: function ( theta ) {

+

+		var c = Math.cos( theta ), s = Math.sin( theta );

+

+		this.set(

+

+			1, 0,  0, 0,

+			0, c, -s, 0,

+			0, s,  c, 0,

+			0, 0,  0, 1

+

+		);

+

+		return this;

+

+	},

+

+	makeRotationY: function ( theta ) {

+

+		var c = Math.cos( theta ), s = Math.sin( theta );

+

+		this.set(

+

+			 c, 0, s, 0,

+			 0, 1, 0, 0,

+			-s, 0, c, 0,

+			 0, 0, 0, 1

+

+		);

+

+		return this;

+

+	},

+

+	makeRotationZ: function ( theta ) {

+

+		var c = Math.cos( theta ), s = Math.sin( theta );

+

+		this.set(

+

+			c, -s, 0, 0,

+			s,  c, 0, 0,

+			0,  0, 1, 0,

+			0,  0, 0, 1

+

+		);

+

+		return this;

+

+	},

+

+	makeRotationAxis: function ( axis, angle ) {

+

+		// Based on http://www.gamedev.net/reference/articles/article1199.asp

+

+		var c = Math.cos( angle );

+		var s = Math.sin( angle );

+		var t = 1 - c;

+		var x = axis.x, y = axis.y, z = axis.z;

+		var tx = t * x, ty = t * y;

+

+		this.set(

+

+			tx * x + c, tx * y - s * z, tx * z + s * y, 0,

+			tx * y + s * z, ty * y + c, ty * z - s * x, 0,

+			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,

+			0, 0, 0, 1

+

+		);

+

+		 return this;

+

+	},

+

+	makeScale: function ( x, y, z ) {

+

+		this.set(

+

+			x, 0, 0, 0,

+			0, y, 0, 0,

+			0, 0, z, 0,

+			0, 0, 0, 1

+

+		);

+

+		return this;

+

+	},

+

+	makeFrustum: function ( left, right, bottom, top, near, far ) {

+

+		var te = this.elements;

+		var x = 2 * near / ( right - left );

+		var y = 2 * near / ( top - bottom );

+

+		var a = ( right + left ) / ( right - left );

+		var b = ( top + bottom ) / ( top - bottom );

+		var c = - ( far + near ) / ( far - near );

+		var d = - 2 * far * near / ( far - near );

+

+		te[0] = x;	te[4] = 0;	te[8] = a;	te[12] = 0;

+		te[1] = 0;	te[5] = y;	te[9] = b;	te[13] = 0;

+		te[2] = 0;	te[6] = 0;	te[10] = c;	te[14] = d;

+		te[3] = 0;	te[7] = 0;	te[11] = - 1;	te[15] = 0;

+

+		return this;

+

+	},

+

+	makePerspective: function ( fov, aspect, near, far ) {

+

+		var ymax = near * Math.tan( THREE.Math.degToRad( fov * 0.5 ) );

+		var ymin = - ymax;

+		var xmin = ymin * aspect;

+		var xmax = ymax * aspect;

+

+		return this.makeFrustum( xmin, xmax, ymin, ymax, near, far );

+

+	},

+

+	makeOrthographic: function ( left, right, top, bottom, near, far ) {

+

+		var te = this.elements;

+		var w = right - left;

+		var h = top - bottom;

+		var p = far - near;

+

+		var x = ( right + left ) / w;

+		var y = ( top + bottom ) / h;

+		var z = ( far + near ) / p;

+

+		te[0] = 2 / w;	te[4] = 0;	te[8] = 0;	te[12] = -x;

+		te[1] = 0;	te[5] = 2 / h;	te[9] = 0;	te[13] = -y;

+		te[2] = 0;	te[6] = 0;	te[10] = -2/p;	te[14] = -z;

+		te[3] = 0;	te[7] = 0;	te[11] = 0;	te[15] = 1;

+

+		return this;

+

+	},

+

+	clone: function () {

+

+		var te = this.elements;

+

+		return new THREE.Matrix4(

+

+			te[0], te[4], te[8], te[12],

+			te[1], te[5], te[9], te[13],

+			te[2], te[6], te[10], te[14],

+			te[3], te[7], te[11], te[15]

+

+		);

+

+	}

+

+} );

+/**

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Ray = function ( origin, direction ) {

+

+	this.origin = ( origin !== undefined ) ? origin : new THREE.Vector3();

+	this.direction = ( direction !== undefined ) ? direction : new THREE.Vector3();

+

+};

+

+THREE.extend( THREE.Ray.prototype, {

+

+	set: function ( origin, direction ) {

+

+		this.origin.copy( origin );

+		this.direction.copy( direction );

+

+		return this;

+

+	},

+

+	copy: function ( ray ) {

+

+		this.origin.copy( ray.origin );

+		this.direction.copy( ray.direction );

+

+		return this;

+

+	},

+

+	at: function( t, optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+

+		return result.copy( this.direction ).multiplyScalar( t ).add( this.origin );

+

+	},

+

+	recast: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( t ) {

+

+			this.origin.copy( this.at( t, v1 ) );

+

+			return this;

+

+		};

+

+	}(),

+

+	closestPointToPoint: function ( point, optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+		result.subVectors( point, this.origin );

+		var directionDistance = result.dot( this.direction );

+

+		return result.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

+

+	},

+

+	distanceToPoint: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( point ) {

+

+			var directionDistance = v1.subVectors( point, this.origin ).dot( this.direction );

+			v1.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

+

+			return v1.distanceTo( point );

+

+		};

+

+	}(),

+

+	isIntersectionSphere: function( sphere ) {

+

+		return ( this.distanceToPoint( sphere.center ) <= sphere.radius );

+

+	},

+

+	isIntersectionPlane: function ( plane ) {

+

+		// check if the line and plane are non-perpendicular, if they

+		// eventually they will intersect.

+		var denominator = plane.normal.dot( this.direction );

+		if ( denominator != 0 ) {

+

+			return true;

+

+		}

+

+		// line is coplanar, return origin

+		if( plane.distanceToPoint( this.origin ) == 0 ) {

+

+			return true;

+

+		}

+

+		return false;

+

+	},

+

+	distanceToPlane: function ( plane ) {

+

+		var denominator = plane.normal.dot( this.direction );

+		if ( denominator == 0 ) {

+

+			// line is coplanar, return origin

+			if( plane.distanceToPoint( this.origin ) == 0 ) {

+

+				return 0;

+

+			}

+

+			// Unsure if this is the correct method to handle this case.

+			return undefined;

+

+		}

+

+		var t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;

+

+		return t;

+

+	},

+

+	intersectPlane: function ( plane, optionalTarget ) {

+

+		var t = this.distanceToPlane( plane );

+

+		if ( t === undefined ) {

+

+			return undefined;

+		}

+

+		return this.at( t, optionalTarget );

+

+	},

+

+	applyMatrix4: function ( matrix4 ) {

+

+		this.direction.add( this.origin ).applyMatrix4( matrix4 );

+		this.origin.applyMatrix4( matrix4 );

+		this.direction.sub( this.origin );

+

+		return this;

+	},

+

+	equals: function ( ray ) {

+

+		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Ray().copy( this );

+

+	}

+

+} );

+/**

+ * @author bhouston / http://exocortex.com

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Sphere = function ( center, radius ) {

+

+	this.center = ( center !== undefined ) ? center : new THREE.Vector3();

+	this.radius = ( radius !== undefined ) ? radius : 0;

+

+};

+

+THREE.extend( THREE.Sphere.prototype, {

+

+	set: function ( center, radius ) {

+

+		this.center.copy( center );

+		this.radius = radius;

+

+		return this;

+	},

+

+	setFromCenterAndPoints: function ( center, points ) {

+

+		var maxRadiusSq = 0;

+

+		for ( var i = 0, il = points.length; i < il; i ++ ) {

+

+			var radiusSq = center.distanceToSquared( points[ i ] );

+			maxRadiusSq = Math.max( maxRadiusSq, radiusSq );

+

+		}

+

+		this.center = center;

+		this.radius = Math.sqrt( maxRadiusSq );

+

+		return this;

+

+	},

+

+	copy: function ( sphere ) {

+

+		this.center.copy( sphere.center );

+		this.radius = sphere.radius;

+

+		return this;

+

+	},

+

+	empty: function () {

+

+		return ( this.radius <= 0 );

+

+	},

+

+	containsPoint: function ( point ) {

+

+		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );

+

+	},

+

+	distanceToPoint: function ( point ) {

+

+		return ( point.distanceTo( this.center ) - this.radius );

+

+	},

+

+	intersectsSphere: function ( sphere ) {

+

+		var radiusSum = this.radius + sphere.radius;

+

+		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );

+

+	},

+

+	clampPoint: function ( point, optionalTarget ) {

+

+		var deltaLengthSq = this.center.distanceToSquared( point );

+

+		var result = optionalTarget || new THREE.Vector3();

+		result.copy( point );

+

+		if ( deltaLengthSq > ( this.radius * this.radius ) ) {

+

+			result.sub( this.center ).normalize();

+			result.multiplyScalar( this.radius ).add( this.center );

+

+		}

+

+		return result;

+

+	},

+

+	getBoundingBox: function ( optionalTarget ) {

+

+		var box = optionalTarget || new THREE.Box3();

+

+		box.set( this.center, this.center );

+		box.expandByScalar( this.radius );

+

+		return box;

+

+	},

+

+	applyMatrix4: function ( matrix ) {

+

+		this.center.applyMatrix4( matrix );

+		this.radius = this.radius * matrix.getMaxScaleOnAxis();

+

+		return this;

+

+	},

+

+	translate: function ( offset ) {

+

+		this.center.add( offset );

+

+		return this;

+

+	},

+

+	equals: function ( sphere ) {

+

+		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Sphere().copy( this );

+

+	}

+

+} );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Frustum = function ( p0, p1, p2, p3, p4, p5 ) {

+

+	this.planes = [

+

+		( p0 !== undefined ) ? p0 : new THREE.Plane(),

+		( p1 !== undefined ) ? p1 : new THREE.Plane(),

+		( p2 !== undefined ) ? p2 : new THREE.Plane(),

+		( p3 !== undefined ) ? p3 : new THREE.Plane(),

+		( p4 !== undefined ) ? p4 : new THREE.Plane(),

+		( p5 !== undefined ) ? p5 : new THREE.Plane()

+

+	];

+

+};

+

+THREE.extend( THREE.Frustum.prototype, {

+

+	set: function ( p0, p1, p2, p3, p4, p5 ) {

+

+		var planes = this.planes;

+

+		planes[0].copy( p0 );

+		planes[1].copy( p1 );

+		planes[2].copy( p2 );

+		planes[3].copy( p3 );

+		planes[4].copy( p4 );

+		planes[5].copy( p5 );

+

+		return this;

+

+	},

+

+	copy: function ( frustum ) {

+

+		var planes = this.planes;

+

+		for( var i = 0; i < 6; i ++ ) {

+

+			planes[i].copy( frustum.planes[i] );

+

+		}

+

+		return this;

+

+	},

+

+	setFromMatrix: function ( m ) {

+

+		var planes = this.planes;

+		var me = m.elements;

+		var me0 = me[0], me1 = me[1], me2 = me[2], me3 = me[3];

+		var me4 = me[4], me5 = me[5], me6 = me[6], me7 = me[7];

+		var me8 = me[8], me9 = me[9], me10 = me[10], me11 = me[11];

+		var me12 = me[12], me13 = me[13], me14 = me[14], me15 = me[15];

+

+		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();

+		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();

+		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();

+		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();

+		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();

+		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();

+

+		return this;

+

+	},

+

+	intersectsObject: function () {

+

+		var center = new THREE.Vector3();

+

+		return function ( object ) {

+

+			// this method is expanded inlined for performance reasons.

+

+			var matrix = object.matrixWorld;

+			var planes = this.planes;

+			var negRadius = - object.geometry.boundingSphere.radius * matrix.getMaxScaleOnAxis();

+

+			center.getPositionFromMatrix( matrix );

+

+			for ( var i = 0; i < 6; i ++ ) {

+

+				var distance = planes[ i ].distanceToPoint( center );

+

+				if ( distance < negRadius ) {

+

+					return false;

+

+				}

+

+			}

+

+			return true;

+

+		};

+

+	}(),

+

+	intersectsSphere: function ( sphere ) {

+

+		var planes = this.planes;

+		var center = sphere.center;

+		var negRadius = -sphere.radius;

+

+		for ( var i = 0; i < 6; i ++ ) {

+

+			var distance = planes[ i ].distanceToPoint( center );

+

+			if ( distance < negRadius ) {

+

+				return false;

+

+			}

+

+		}

+

+		return true;

+

+	},

+

+	containsPoint: function ( point ) {

+

+		var planes = this.planes;

+

+		for ( var i = 0; i < 6; i ++ ) {

+

+			if ( planes[ i ].distanceToPoint( point ) < 0 ) {

+

+				return false;

+

+			}

+

+		}

+

+		return true;

+

+	},

+

+	clone: function () {

+

+		return new THREE.Frustum().copy( this );

+

+	}

+

+} );

+/**

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Plane = function ( normal, constant ) {

+

+	this.normal = ( normal !== undefined ) ? normal : new THREE.Vector3( 1, 0, 0 );

+	this.constant = ( constant !== undefined ) ? constant : 0;

+

+};

+

+THREE.extend( THREE.Plane.prototype, {

+

+	set: function ( normal, constant ) {

+

+		this.normal.copy( normal );

+		this.constant = constant;

+

+		return this;

+

+	},

+

+	setComponents: function ( x, y, z, w ) {

+

+		this.normal.set( x, y, z );

+		this.constant = w;

+

+		return this;

+

+	},

+

+	setFromNormalAndCoplanarPoint: function ( normal, point ) {

+

+		this.normal.copy( normal );

+		this.constant = - point.dot( this.normal );	// must be this.normal, not normal, as this.normal is normalized

+

+		return this;

+

+	},

+

+	setFromCoplanarPoints: function() {

+

+		var v1 = new THREE.Vector3();

+		var v2 = new THREE.Vector3();

+

+		return function ( a, b, c ) {

+

+			var normal = v1.subVectors( c, b ).cross( v2.subVectors( a, b ) ).normalize();

+

+			// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?

+

+			this.setFromNormalAndCoplanarPoint( normal, a );

+

+			return this;

+

+		};

+

+	}(),

+

+

+	copy: function ( plane ) {

+

+		this.normal.copy( plane.normal );

+		this.constant = plane.constant;

+

+		return this;

+

+	},

+

+	normalize: function () {

+

+		// Note: will lead to a divide by zero if the plane is invalid.

+

+		var inverseNormalLength = 1.0 / this.normal.length();

+		this.normal.multiplyScalar( inverseNormalLength );

+		this.constant *= inverseNormalLength;

+

+		return this;

+

+	},

+

+	negate: function () {

+

+		this.constant *= -1;

+		this.normal.negate();

+

+		return this;

+

+	},

+

+	distanceToPoint: function ( point ) {

+

+		return this.normal.dot( point ) + this.constant;

+

+	},

+

+	distanceToSphere: function ( sphere ) {

+

+		return this.distanceToPoint( sphere.center ) - sphere.radius;

+

+	},

+

+	projectPoint: function ( point, optionalTarget ) {

+

+		return this.orthoPoint( point, optionalTarget ).sub( point ).negate();

+

+	},

+

+	orthoPoint: function ( point, optionalTarget ) {

+

+		var perpendicularMagnitude = this.distanceToPoint( point );

+

+		var result = optionalTarget || new THREE.Vector3();

+		return result.copy( this.normal ).multiplyScalar( perpendicularMagnitude );

+

+	},

+

+	isIntersectionLine: function ( line ) {

+

+		// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.

+

+		var startSign = this.distanceToPoint( line.start );

+		var endSign = this.distanceToPoint( line.end );

+

+		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );

+

+	},

+

+	intersectLine: function() {

+

+		var v1 = new THREE.Vector3();

+

+		return function ( line, optionalTarget ) {

+

+			var result = optionalTarget || new THREE.Vector3();

+

+			var direction = line.delta( v1 );

+

+			var denominator = this.normal.dot( direction );

+

+			if ( denominator == 0 ) {

+

+				// line is coplanar, return origin

+				if( this.distanceToPoint( line.start ) == 0 ) {

+

+					return result.copy( line.start );

+

+				}

+

+				// Unsure if this is the correct method to handle this case.

+				return undefined;

+

+			}

+

+			var t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;

+

+			if( t < 0 || t > 1 ) {

+

+				return undefined;

+

+			}

+

+			return result.copy( direction ).multiplyScalar( t ).add( line.start );

+

+		};

+

+	}(),

+

+

+	coplanarPoint: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+		return result.copy( this.normal ).multiplyScalar( - this.constant );

+

+	},

+

+	applyMatrix4: function() {

+

+		var v1 = new THREE.Vector3();

+		var v2 = new THREE.Vector3();

+

+		return function ( matrix, optionalNormalMatrix ) {

+

+			// compute new normal based on theory here:

+			// http://www.songho.ca/opengl/gl_normaltransform.html

+			optionalNormalMatrix = optionalNormalMatrix || new THREE.Matrix3().getInverse( matrix ).transpose();

+			var newNormal = v1.copy( this.normal ).applyMatrix3( optionalNormalMatrix );

+

+			var newCoplanarPoint = this.coplanarPoint( v2 );

+			newCoplanarPoint.applyMatrix4( matrix );

+

+			this.setFromNormalAndCoplanarPoint( newNormal, newCoplanarPoint );

+

+			return this;

+

+		};

+

+	}(),

+

+	translate: function ( offset ) {

+

+		this.constant = this.constant - offset.dot( this.normal );

+

+		return this;

+

+	},

+

+	equals: function ( plane ) {

+

+		return plane.normal.equals( this.normal ) && ( plane.constant == this.constant );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Plane().copy( this );

+

+	}

+

+} );

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Math = {

+

+	// Clamp value to range <a, b>

+

+	clamp: function ( x, a, b ) {

+

+		return ( x < a ) ? a : ( ( x > b ) ? b : x );

+

+	},

+

+	// Clamp value to range <a, inf)

+

+	clampBottom: function ( x, a ) {

+

+		return x < a ? a : x;

+

+	},

+

+	// Linear mapping from range <a1, a2> to range <b1, b2>

+

+	mapLinear: function ( x, a1, a2, b1, b2 ) {

+

+		return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );

+

+	},

+

+	// http://en.wikipedia.org/wiki/Smoothstep

+

+	smoothstep: function ( x, min, max ) {

+

+		if ( x <= min ) return 0;

+		if ( x >= max ) return 1;

+

+		x = ( x - min )/( max - min );

+

+		return x*x*(3 - 2*x);

+

+	},

+

+	smootherstep: function ( x, min, max ) {

+

+		if ( x <= min ) return 0;

+		if ( x >= max ) return 1;

+

+		x = ( x - min )/( max - min );

+

+		return x*x*x*(x*(x*6 - 15) + 10);

+

+	},

+

+	// Random float from <0, 1> with 16 bits of randomness

+	// (standard Math.random() creates repetitive patterns when applied over larger space)

+

+	random16: function () {

+

+		return ( 65280 * Math.random() + 255 * Math.random() ) / 65535;

+

+	},

+

+	// Random integer from <low, high> interval

+

+	randInt: function ( low, high ) {

+

+		return low + Math.floor( Math.random() * ( high - low + 1 ) );

+

+	},

+

+	// Random float from <low, high> interval

+

+	randFloat: function ( low, high ) {

+

+		return low + Math.random() * ( high - low );

+

+	},

+

+	// Random float from <-range/2, range/2> interval

+

+	randFloatSpread: function ( range ) {

+

+		return range * ( 0.5 - Math.random() );

+

+	},

+

+	sign: function ( x ) {

+

+		return ( x < 0 ) ? -1 : ( ( x > 0 ) ? 1 : 0 );

+

+	},

+

+	degToRad: function() {

+

+		var degreeToRadiansFactor = Math.PI / 180;

+

+		return function ( degrees ) {

+

+			return degrees * degreeToRadiansFactor;

+

+		};

+

+	}(),

+

+	radToDeg: function() {

+

+		var radianToDegreesFactor = 180 / Math.PI;

+

+		return function ( radians ) {

+

+			return radians * radianToDegreesFactor;

+

+		};

+

+	}()

+

+};

+/**

+ * Spline from Tween.js, slightly optimized (and trashed)

+ * http://sole.github.com/tween.js/examples/05_spline.html

+ *

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Spline = function ( points ) {

+

+	this.points = points;

+

+	var c = [], v3 = { x: 0, y: 0, z: 0 },

+	point, intPoint, weight, w2, w3,

+	pa, pb, pc, pd;

+

+	this.initFromArray = function( a ) {

+

+		this.points = [];

+

+		for ( var i = 0; i < a.length; i++ ) {

+

+			this.points[ i ] = { x: a[ i ][ 0 ], y: a[ i ][ 1 ], z: a[ i ][ 2 ] };

+

+		}

+

+	};

+

+	this.getPoint = function ( k ) {

+

+		point = ( this.points.length - 1 ) * k;

+		intPoint = Math.floor( point );

+		weight = point - intPoint;

+

+		c[ 0 ] = intPoint === 0 ? intPoint : intPoint - 1;

+		c[ 1 ] = intPoint;

+		c[ 2 ] = intPoint  > this.points.length - 2 ? this.points.length - 1 : intPoint + 1;

+		c[ 3 ] = intPoint  > this.points.length - 3 ? this.points.length - 1 : intPoint + 2;

+

+		pa = this.points[ c[ 0 ] ];

+		pb = this.points[ c[ 1 ] ];

+		pc = this.points[ c[ 2 ] ];

+		pd = this.points[ c[ 3 ] ];

+

+		w2 = weight * weight;

+		w3 = weight * w2;

+

+		v3.x = interpolate( pa.x, pb.x, pc.x, pd.x, weight, w2, w3 );

+		v3.y = interpolate( pa.y, pb.y, pc.y, pd.y, weight, w2, w3 );

+		v3.z = interpolate( pa.z, pb.z, pc.z, pd.z, weight, w2, w3 );

+

+		return v3;

+

+	};

+

+	this.getControlPointsArray = function () {

+

+		var i, p, l = this.points.length,

+			coords = [];

+

+		for ( i = 0; i < l; i ++ ) {

+

+			p = this.points[ i ];

+			coords[ i ] = [ p.x, p.y, p.z ];

+

+		}

+

+		return coords;

+

+	};

+

+	// approximate length by summing linear segments

+

+	this.getLength = function ( nSubDivisions ) {

+

+		var i, index, nSamples, position,

+			point = 0, intPoint = 0, oldIntPoint = 0,

+			oldPosition = new THREE.Vector3(),

+			tmpVec = new THREE.Vector3(),

+			chunkLengths = [],

+			totalLength = 0;

+

+		// first point has 0 length

+

+		chunkLengths[ 0 ] = 0;

+

+		if ( !nSubDivisions ) nSubDivisions = 100;

+

+		nSamples = this.points.length * nSubDivisions;

+

+		oldPosition.copy( this.points[ 0 ] );

+

+		for ( i = 1; i < nSamples; i ++ ) {

+

+			index = i / nSamples;

+

+			position = this.getPoint( index );

+			tmpVec.copy( position );

+

+			totalLength += tmpVec.distanceTo( oldPosition );

+

+			oldPosition.copy( position );

+

+			point = ( this.points.length - 1 ) * index;

+			intPoint = Math.floor( point );

+

+			if ( intPoint != oldIntPoint ) {

+

+				chunkLengths[ intPoint ] = totalLength;

+				oldIntPoint = intPoint;

+

+			}

+

+		}

+

+		// last point ends with total length

+

+		chunkLengths[ chunkLengths.length ] = totalLength;

+

+		return { chunks: chunkLengths, total: totalLength };

+

+	};

+

+	this.reparametrizeByArcLength = function ( samplingCoef ) {

+

+		var i, j,

+			index, indexCurrent, indexNext,

+			linearDistance, realDistance,

+			sampling, position,

+			newpoints = [],

+			tmpVec = new THREE.Vector3(),

+			sl = this.getLength();

+

+		newpoints.push( tmpVec.copy( this.points[ 0 ] ).clone() );

+

+		for ( i = 1; i < this.points.length; i++ ) {

+

+			//tmpVec.copy( this.points[ i - 1 ] );

+			//linearDistance = tmpVec.distanceTo( this.points[ i ] );

+

+			realDistance = sl.chunks[ i ] - sl.chunks[ i - 1 ];

+

+			sampling = Math.ceil( samplingCoef * realDistance / sl.total );

+

+			indexCurrent = ( i - 1 ) / ( this.points.length - 1 );

+			indexNext = i / ( this.points.length - 1 );

+

+			for ( j = 1; j < sampling - 1; j++ ) {

+

+				index = indexCurrent + j * ( 1 / sampling ) * ( indexNext - indexCurrent );

+

+				position = this.getPoint( index );

+				newpoints.push( tmpVec.copy( position ).clone() );

+

+			}

+

+			newpoints.push( tmpVec.copy( this.points[ i ] ).clone() );

+

+		}

+

+		this.points = newpoints;

+

+	};

+

+	// Catmull-Rom

+

+	function interpolate( p0, p1, p2, p3, t, t2, t3 ) {

+

+		var v0 = ( p2 - p0 ) * 0.5,

+			v1 = ( p3 - p1 ) * 0.5;

+

+		return ( 2 * ( p1 - p2 ) + v0 + v1 ) * t3 + ( - 3 * ( p1 - p2 ) - 2 * v0 - v1 ) * t2 + v0 * t + p1;

+

+	};

+

+};

+/**

+ * @author bhouston / http://exocortex.com

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Triangle = function ( a, b, c ) {

+

+	this.a = ( a !== undefined ) ? a : new THREE.Vector3();

+	this.b = ( b !== undefined ) ? b : new THREE.Vector3();

+	this.c = ( c !== undefined ) ? c : new THREE.Vector3();

+

+};

+

+THREE.Triangle.normal = function() {

+

+	var v0 = new THREE.Vector3();

+

+	return function( a, b, c, optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+

+		result.subVectors( c, b );

+		v0.subVectors( a, b );

+		result.cross( v0 );

+

+		var resultLengthSq = result.lengthSq();

+		if( resultLengthSq > 0 ) {

+

+			return result.multiplyScalar( 1 / Math.sqrt( resultLengthSq ) );

+

+		}

+

+		return result.set( 0, 0, 0 );

+

+	};

+

+}();

+

+// static/instance method to calculate barycoordinates

+// based on: http://www.blackpawn.com/texts/pointinpoly/default.html

+THREE.Triangle.barycoordFromPoint = function() {

+

+	var v0 = new THREE.Vector3(),

+		v1 = new THREE.Vector3(),

+		v2 = new THREE.Vector3();

+

+	return function ( point, a, b, c, optionalTarget ) {

+

+		v0.subVectors( c, a );

+		v1.subVectors( b, a );

+		v2.subVectors( point, a );

+

+		var dot00 = v0.dot( v0 );

+		var dot01 = v0.dot( v1 );

+		var dot02 = v0.dot( v2 );

+		var dot11 = v1.dot( v1 );

+		var dot12 = v1.dot( v2 );

+

+		var denom = ( dot00 * dot11 - dot01 * dot01 );

+

+		var result = optionalTarget || new THREE.Vector3();

+

+		// colinear or singular triangle

+		if( denom == 0 ) {

+			// arbitrary location outside of triangle?

+			// not sure if this is the best idea, maybe should be returning undefined

+			return result.set( -2, -1, -1 );

+		}

+

+		var invDenom = 1 / denom;

+		var u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;

+		var v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;

+

+		// barycoordinates must always sum to 1

+		return result.set( 1 - u - v, v, u );

+

+	};

+

+}();

+

+THREE.Triangle.containsPoint = function() {

+

+	var v1 = new THREE.Vector3();

+

+	return function ( point, a, b, c ) {

+

+		var result = THREE.Triangle.barycoordFromPoint( point, a, b, c, v1 );

+

+		return ( result.x >= 0 ) && ( result.y >= 0 ) && ( ( result.x + result.y ) <= 1 );

+

+	};

+

+}();

+

+THREE.extend( THREE.Triangle.prototype, {

+

+	constructor: THREE.Triangle,

+

+	set: function ( a, b, c ) {

+

+		this.a.copy( a );

+		this.b.copy( b );

+		this.c.copy( c );

+

+		return this;

+

+	},

+

+	setFromPointsAndIndices: function ( points, i0, i1, i2 ) {

+

+		this.a.copy( points[i0] );

+		this.b.copy( points[i1] );

+		this.c.copy( points[i2] );

+

+		return this;

+

+	},

+

+	copy: function ( triangle ) {

+

+		this.a.copy( triangle.a );

+		this.b.copy( triangle.b );

+		this.c.copy( triangle.c );

+

+		return this;

+

+	},

+

+	area: function() {

+

+		var v0 = new THREE.Vector3();

+		var v1 = new THREE.Vector3();

+

+		return function () {

+

+			v0.subVectors( this.c, this.b );

+			v1.subVectors( this.a, this.b );

+

+			return v0.cross( v1 ).length() * 0.5;

+

+		};

+

+	}(),

+

+	midpoint: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Vector3();

+		return result.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );

+

+	},

+

+	normal: function ( optionalTarget ) {

+

+		return THREE.Triangle.normal( this.a, this.b, this.c, optionalTarget );

+

+	},

+

+	plane: function ( optionalTarget ) {

+

+		var result = optionalTarget || new THREE.Plane();

+

+		return result.setFromCoplanarPoints( this.a, this.b, this.c );

+

+	},

+

+	barycoordFromPoint: function ( point, optionalTarget ) {

+

+		return THREE.Triangle.barycoordFromPoint( point, this.a, this.b, this.c, optionalTarget );

+

+	},

+

+	containsPoint: function ( point ) {

+

+		return THREE.Triangle.containsPoint( point, this.a, this.b, this.c );

+

+	},

+

+	equals: function ( triangle ) {

+

+		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );

+

+	},

+

+	clone: function () {

+

+		return new THREE.Triangle().copy( this );

+

+	}

+

+} );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Vertex = function ( v ) {

+

+	console.warn( 'THREE.Vertex has been DEPRECATED. Use THREE.Vector3 instead.')

+	return v;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.UV = function ( u, v ) {

+

+	console.warn( 'THREE.UV has been DEPRECATED. Use THREE.Vector2 instead.')

+	return new THREE.Vector2( u, v );

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Clock = function ( autoStart ) {

+

+	this.autoStart = ( autoStart !== undefined ) ? autoStart : true;

+

+	this.startTime = 0;

+	this.oldTime = 0;

+	this.elapsedTime = 0;

+

+	this.running = false;

+

+};

+

+THREE.extend( THREE.Clock.prototype, {

+

+	start: function () {

+

+		this.startTime = window.performance !== undefined && window.performance.now !== undefined

+					? window.performance.now()

+					: Date.now();

+

+		this.oldTime = this.startTime;

+		this.running = true;

+	},

+

+	stop: function () {

+

+		this.getElapsedTime();

+		this.running = false;

+

+	},

+

+	getElapsedTime: function () {

+

+		this.getDelta();

+		return this.elapsedTime;

+

+	},

+

+	getDelta: function () {

+

+		var diff = 0;

+

+		if ( this.autoStart && ! this.running ) {

+

+			this.start();

+

+		}

+

+		if ( this.running ) {

+

+			var newTime = window.performance !== undefined && window.performance.now !== undefined

+					? window.performance.now()

+					: Date.now();

+

+			diff = 0.001 * ( newTime - this.oldTime );

+			this.oldTime = newTime;

+

+			this.elapsedTime += diff;

+

+		}

+

+		return diff;

+

+	}

+

+} );

+/**

+ * https://github.com/mrdoob/eventdispatcher.js/

+ */

+

+THREE.EventDispatcher = function () {

+

+	var listeners = {};

+

+	this.addEventListener = function ( type, listener ) {

+

+		if ( listeners[ type ] === undefined ) {

+

+			listeners[ type ] = [];

+

+		}

+

+		if ( listeners[ type ].indexOf( listener ) === - 1 ) {

+

+			listeners[ type ].push( listener );

+

+		}

+

+	};

+

+	this.removeEventListener = function ( type, listener ) {

+

+		var index = listeners[ type ].indexOf( listener );

+

+		if ( index !== - 1 ) {

+

+			listeners[ type ].splice( index, 1 );

+

+		}

+

+	};

+

+	this.dispatchEvent = function ( event ) {

+

+		var listenerArray = listeners[ event.type ];

+

+		if ( listenerArray !== undefined ) {

+

+			event.target = this;

+

+			for ( var i = 0, l = listenerArray.length; i < l; i ++ ) {

+

+				listenerArray[ i ].call( this, event );

+

+			}

+

+		}

+

+	};

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author bhouston / http://exocortex.com/

+ */

+

+( function ( THREE ) {

+

+	THREE.Raycaster = function ( origin, direction, near, far ) {

+

+		this.ray = new THREE.Ray( origin, direction );

+

+		// normalized ray.direction required for accurate distance calculations

+		if( this.ray.direction.lengthSq() > 0 ) {

+

+			this.ray.direction.normalize();

+

+		}

+

+		this.near = near || 0;

+		this.far = far || Infinity;

+

+	};

+

+	var sphere = new THREE.Sphere();

+	var localRay = new THREE.Ray();

+	var facePlane = new THREE.Plane();

+	var intersectPoint = new THREE.Vector3();

+	var matrixPosition = new THREE.Vector3();

+

+	var inverseMatrix = new THREE.Matrix4();

+

+	var descSort = function ( a, b ) {

+

+		return a.distance - b.distance;

+

+	};

+

+	var intersectObject = function ( object, raycaster, intersects ) {

+

+		if ( object instanceof THREE.Particle ) {

+

+			matrixPosition.getPositionFromMatrix( object.matrixWorld );

+			var distance = raycaster.ray.distanceToPoint( matrixPosition );

+

+			if ( distance > object.scale.x ) {

+

+				return intersects;

+

+			}

+

+			intersects.push( {

+

+				distance: distance,

+				point: object.position,

+				face: null,

+				object: object

+

+			} );

+

+		} else if ( object instanceof THREE.Mesh ) {

+

+			// Checking boundingSphere distance to ray

+			matrixPosition.getPositionFromMatrix( object.matrixWorld );

+			sphere.set(

+				matrixPosition,

+				object.geometry.boundingSphere.radius * object.matrixWorld.getMaxScaleOnAxis() );

+

+			if ( ! raycaster.ray.isIntersectionSphere( sphere ) ) {

+

+				return intersects;

+

+			}

+

+			// Checking faces

+

+			var geometry = object.geometry;

+			var vertices = geometry.vertices;

+

+			var isFaceMaterial = object.material instanceof THREE.MeshFaceMaterial;

+			var objectMaterials = isFaceMaterial === true ? object.material.materials : null;

+

+			var side = object.material.side;

+

+			var a, b, c, d;

+			var precision = raycaster.precision;

+

+			object.matrixRotationWorld.extractRotation( object.matrixWorld );

+

+			inverseMatrix.getInverse( object.matrixWorld );

+

+			localRay.copy( raycaster.ray ).applyMatrix4( inverseMatrix );

+

+			for ( var f = 0, fl = geometry.faces.length; f < fl; f ++ ) {

+

+				var face = geometry.faces[ f ];

+

+				var material = isFaceMaterial === true ? objectMaterials[ face.materialIndex ] : object.material;

+

+				if ( material === undefined ) continue;

+

+				facePlane.setFromNormalAndCoplanarPoint( face.normal, vertices[face.a] );

+

+				var planeDistance = localRay.distanceToPlane( facePlane );

+

+				// bail if raycaster and plane are parallel

+				if ( Math.abs( planeDistance ) < precision ) continue;

+

+				// if negative distance, then plane is behind raycaster

+				if ( planeDistance < 0 ) continue;

+

+				// check if we hit the wrong side of a single sided face

+				side = material.side;

+				if( side !== THREE.DoubleSide ) {

+

+					var planeSign = localRay.direction.dot( facePlane.normal );

+

+					if( ! ( side === THREE.FrontSide ? planeSign < 0 : planeSign > 0 ) ) continue;

+

+				}

+

+				// this can be done using the planeDistance from localRay because localRay wasn't normalized, but ray was

+				if ( planeDistance < raycaster.near || planeDistance > raycaster.far ) continue;

+

+				intersectPoint = localRay.at( planeDistance, intersectPoint ); // passing in intersectPoint avoids a copy

+

+				if ( face instanceof THREE.Face3 ) {

+

+					a = vertices[ face.a ];

+					b = vertices[ face.b ];

+					c = vertices[ face.c ];

+

+					if ( ! THREE.Triangle.containsPoint( intersectPoint, a, b, c ) ) continue;

+

+				} else if ( face instanceof THREE.Face4 ) {

+

+					a = vertices[ face.a ];

+					b = vertices[ face.b ];

+					c = vertices[ face.c ];

+					d = vertices[ face.d ];

+

+					if ( ( ! THREE.Triangle.containsPoint( intersectPoint, a, b, d ) ) &&

+						 ( ! THREE.Triangle.containsPoint( intersectPoint, b, c, d ) ) ) continue;

+

+				} else {

+

+					// This is added because if we call out of this if/else group when none of the cases

+					//    match it will add a point to the intersection list erroneously.

+					throw Error( "face type not supported" );

+

+				}

+

+				intersects.push( {

+

+					distance: planeDistance,	// this works because the original ray was normalized, and the transformed localRay wasn't

+					point: raycaster.ray.at( planeDistance ),

+					face: face,

+					faceIndex: f,

+					object: object

+

+				} );

+

+			}

+

+		}

+

+	};

+

+	var intersectDescendants = function ( object, raycaster, intersects ) {

+

+		var descendants = object.getDescendants();

+

+		for ( var i = 0, l = descendants.length; i < l; i ++ ) {

+

+			intersectObject( descendants[ i ], raycaster, intersects );

+

+		}

+	};

+

+	//

+

+	THREE.Raycaster.prototype.precision = 0.0001;

+

+	THREE.Raycaster.prototype.set = function ( origin, direction ) {

+

+		this.ray.set( origin, direction );

+

+		// normalized ray.direction required for accurate distance calculations

+		if( this.ray.direction.length() > 0 ) {

+

+			this.ray.direction.normalize();

+

+		}

+

+	};

+

+	THREE.Raycaster.prototype.intersectObject = function ( object, recursive ) {

+

+		var intersects = [];

+

+		if ( recursive === true ) {

+

+			intersectDescendants( object, this, intersects );

+

+		}

+

+		intersectObject( object, this, intersects );

+

+		intersects.sort( descSort );

+

+		return intersects;

+

+	};

+

+	THREE.Raycaster.prototype.intersectObjects = function ( objects, recursive ) {

+

+		var intersects = [];

+

+		for ( var i = 0, l = objects.length; i < l; i ++ ) {

+

+			intersectObject( objects[ i ], this, intersects );

+

+			if ( recursive === true ) {

+

+				intersectDescendants( objects[ i ], this, intersects );

+

+			}

+		}

+

+		intersects.sort( descSort );

+

+		return intersects;

+

+	};

+

+}( THREE ) );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Object3D = function () {

+

+	this.id = THREE.Object3DIdCount ++;

+

+	this.name = '';

+	this.properties = {};

+

+	this.parent = undefined;

+	this.children = [];

+

+	this.up = new THREE.Vector3( 0, 1, 0 );

+

+	this.position = new THREE.Vector3();

+	this.rotation = new THREE.Vector3();

+	this.eulerOrder = THREE.Object3D.defaultEulerOrder;

+	this.scale = new THREE.Vector3( 1, 1, 1 );

+

+	this.renderDepth = null;

+

+	this.rotationAutoUpdate = true;

+

+	this.matrix = new THREE.Matrix4();

+	this.matrixWorld = new THREE.Matrix4();

+	this.matrixRotationWorld = new THREE.Matrix4();

+

+	this.matrixAutoUpdate = true;

+	this.matrixWorldNeedsUpdate = true;

+

+	this.quaternion = new THREE.Quaternion();

+	this.useQuaternion = false;

+

+	this.visible = true;

+

+	this.castShadow = false;

+	this.receiveShadow = false;

+

+	this.frustumCulled = true;

+

+	this._vector = new THREE.Vector3();

+

+};

+

+

+THREE.Object3D.prototype = {

+

+	constructor: THREE.Object3D,

+

+	applyMatrix: function ( matrix ) {

+

+		this.matrix.multiplyMatrices( matrix, this.matrix );

+

+		this.scale.getScaleFromMatrix( this.matrix );

+

+		var mat = new THREE.Matrix4().extractRotation( this.matrix );

+		this.rotation.setEulerFromRotationMatrix( mat, this.eulerOrder );

+

+		this.position.getPositionFromMatrix( this.matrix );

+

+	},

+

+	translate: function ( distance, axis ) {

+

+		this.matrix.rotateAxis( axis );

+		this.position.add( axis.multiplyScalar( distance ) );

+

+	},

+

+	translateX: function ( distance ) {

+

+		this.translate( distance, this._vector.set( 1, 0, 0 ) );

+

+	},

+

+	translateY: function ( distance ) {

+

+		this.translate( distance, this._vector.set( 0, 1, 0 ) );

+

+	},

+

+	translateZ: function ( distance ) {

+

+		this.translate( distance, this._vector.set( 0, 0, 1 ) );

+

+	},

+

+	localToWorld: function ( vector ) {

+

+		return vector.applyMatrix4( this.matrixWorld );

+

+	},

+

+	worldToLocal: function ( vector ) {

+

+		return vector.applyMatrix4( THREE.Object3D.__m1.getInverse( this.matrixWorld ) );

+

+	},

+

+	lookAt: function ( vector ) {

+

+		// TODO: Add hierarchy support.

+

+		this.matrix.lookAt( vector, this.position, this.up );

+

+		if ( this.rotationAutoUpdate ) {

+

+			if ( this.useQuaternion === false )  {

+

+				this.rotation.setEulerFromRotationMatrix( this.matrix, this.eulerOrder );

+

+			} else {

+

+				this.quaternion.copy( this.matrix.decompose()[ 1 ] );

+

+			}

+

+		}

+

+	},

+

+	add: function ( object ) {

+

+		if ( object === this ) {

+

+			console.warn( 'THREE.Object3D.add: An object can\'t be added as a child of itself.' );

+			return;

+

+		}

+

+		if ( object instanceof THREE.Object3D ) {

+

+			if ( object.parent !== undefined ) {

+

+				object.parent.remove( object );

+

+			}

+

+			object.parent = this;

+			this.children.push( object );

+

+			// add to scene

+

+			var scene = this;

+

+			while ( scene.parent !== undefined ) {

+

+				scene = scene.parent;

+

+			}

+

+			if ( scene !== undefined && scene instanceof THREE.Scene )  {

+

+				scene.__addObject( object );

+

+			}

+

+		}

+

+	},

+

+	remove: function ( object ) {

+

+		var index = this.children.indexOf( object );

+

+		if ( index !== - 1 ) {

+

+			object.parent = undefined;

+			this.children.splice( index, 1 );

+

+			// remove from scene

+

+			var scene = this;

+

+			while ( scene.parent !== undefined ) {

+

+				scene = scene.parent;

+

+			}

+

+			if ( scene !== undefined && scene instanceof THREE.Scene ) {

+

+				scene.__removeObject( object );

+

+			}

+

+		}

+

+	},

+

+	traverse: function ( callback ) {

+

+		callback( this );

+

+		for ( var i = 0, l = this.children.length; i < l; i ++ ) {

+

+			this.children[ i ].traverse( callback );

+

+		}

+

+	},

+

+	getChildByName: function ( name, recursive ) {

+

+		for ( var i = 0, l = this.children.length; i < l; i ++ ) {

+

+			var child = this.children[ i ];

+

+			if ( child.name === name ) {

+

+				return child;

+

+			}

+

+			if ( recursive === true ) {

+

+				child = child.getChildByName( name, recursive );

+

+				if ( child !== undefined ) {

+

+					return child;

+

+				}

+

+			}

+

+		}

+

+		return undefined;

+

+	},

+

+	getDescendants: function ( array ) {

+

+		if ( array === undefined ) array = [];

+

+		Array.prototype.push.apply( array, this.children );

+

+		for ( var i = 0, l = this.children.length; i < l; i ++ ) {

+

+			this.children[ i ].getDescendants( array );

+

+		}

+

+		return array;

+

+	},

+

+	updateMatrix: function () {

+

+		this.matrix.setPosition( this.position );

+

+		if ( this.useQuaternion === false )  {

+

+			this.matrix.setRotationFromEuler( this.rotation, this.eulerOrder );

+

+		} else {

+

+			this.matrix.setRotationFromQuaternion( this.quaternion );

+

+		}

+

+		if ( this.scale.x !== 1 || this.scale.y !== 1 || this.scale.z !== 1 ) {

+

+			this.matrix.scale( this.scale );

+

+		}

+

+		this.matrixWorldNeedsUpdate = true;

+

+	},

+

+	updateMatrixWorld: function ( force ) {

+

+		if ( this.matrixAutoUpdate === true ) this.updateMatrix();

+

+		if ( this.matrixWorldNeedsUpdate === true || force === true ) {

+

+			if ( this.parent === undefined ) {

+

+				this.matrixWorld.copy( this.matrix );

+

+			} else {

+

+				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

+

+			}

+

+			this.matrixWorldNeedsUpdate = false;

+

+			force = true;

+

+		}

+

+		// update children

+

+		for ( var i = 0, l = this.children.length; i < l; i ++ ) {

+

+			this.children[ i ].updateMatrixWorld( force );

+

+		}

+

+	},

+

+	clone: function ( object ) {

+

+		if ( object === undefined ) object = new THREE.Object3D();

+

+		object.name = this.name;

+

+		object.up.copy( this.up );

+

+		object.position.copy( this.position );

+		if ( object.rotation instanceof THREE.Vector3 ) object.rotation.copy( this.rotation ); // because of Sprite madness

+		object.eulerOrder = this.eulerOrder;

+		object.scale.copy( this.scale );

+

+		object.renderDepth = this.renderDepth;

+

+		object.rotationAutoUpdate = this.rotationAutoUpdate;

+

+		object.matrix.copy( this.matrix );

+		object.matrixWorld.copy( this.matrixWorld );

+		object.matrixRotationWorld.copy( this.matrixRotationWorld );

+

+		object.matrixAutoUpdate = this.matrixAutoUpdate;

+		object.matrixWorldNeedsUpdate = this.matrixWorldNeedsUpdate;

+

+		object.quaternion.copy( this.quaternion );

+		object.useQuaternion = this.useQuaternion;

+

+		object.visible = this.visible;

+

+		object.castShadow = this.castShadow;

+		object.receiveShadow = this.receiveShadow;

+

+		object.frustumCulled = this.frustumCulled;

+

+		for ( var i = 0; i < this.children.length; i ++ ) {

+

+			var child = this.children[ i ];

+			object.add( child.clone() );

+

+		}

+

+		return object;

+

+	}

+

+};

+

+THREE.Object3D.__m1 = new THREE.Matrix4();

+THREE.Object3D.defaultEulerOrder = 'XYZ',

+

+THREE.Object3DIdCount = 0;

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author supereggbert / http://www.paulbrunt.co.uk/

+ * @author julianwa / https://github.com/julianwa

+ */

+

+THREE.Projector = function () {

+

+	var _object, _objectCount, _objectPool = [], _objectPoolLength = 0,

+	_vertex, _vertexCount, _vertexPool = [], _vertexPoolLength = 0,

+	_face, _face3Count, _face3Pool = [], _face3PoolLength = 0,

+	_face4Count, _face4Pool = [], _face4PoolLength = 0,

+	_line, _lineCount, _linePool = [], _linePoolLength = 0,

+	_particle, _particleCount, _particlePool = [], _particlePoolLength = 0,

+

+	_renderData = { objects: [], sprites: [], lights: [], elements: [] },

+

+	_vector3 = new THREE.Vector3(),

+	_vector4 = new THREE.Vector4(),

+

+	_clipBox = new THREE.Box3( new THREE.Vector3( -1, -1, -1 ), new THREE.Vector3( 1, 1, 1 ) ),

+	_boundingBox = new THREE.Box3(),

+	_points3 = new Array( 3 ),

+	_points4 = new Array( 4 ),

+

+	_viewMatrix = new THREE.Matrix4(),

+	_viewProjectionMatrix = new THREE.Matrix4(),

+

+	_modelMatrix,

+	_modelViewProjectionMatrix = new THREE.Matrix4(),

+

+	_normalMatrix = new THREE.Matrix3(),

+	_normalViewMatrix = new THREE.Matrix3(),

+

+	_centroid = new THREE.Vector3(),

+

+	_frustum = new THREE.Frustum(),

+

+	_clippedVertex1PositionScreen = new THREE.Vector4(),

+	_clippedVertex2PositionScreen = new THREE.Vector4();

+

+	this.projectVector = function ( vector, camera ) {

+

+		camera.matrixWorldInverse.getInverse( camera.matrixWorld );

+

+		_viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );

+

+		return vector.applyProjection( _viewProjectionMatrix );

+

+	};

+

+	this.unprojectVector = function ( vector, camera ) {

+

+		camera.projectionMatrixInverse.getInverse( camera.projectionMatrix );

+

+		_viewProjectionMatrix.multiplyMatrices( camera.matrixWorld, camera.projectionMatrixInverse );

+

+		return vector.applyProjection( _viewProjectionMatrix );

+

+	};

+

+	this.pickingRay = function ( vector, camera ) {

+

+		// set two vectors with opposing z values

+		vector.z = -1.0;

+		var end = new THREE.Vector3( vector.x, vector.y, 1.0 );

+

+		this.unprojectVector( vector, camera );

+		this.unprojectVector( end, camera );

+

+		// find direction from vector to end

+		end.sub( vector ).normalize();

+

+		return new THREE.Raycaster( vector, end );

+

+	};

+

+	var projectGraph = function ( root, sortObjects ) {

+

+		_objectCount = 0;

+

+		_renderData.objects.length = 0;

+		_renderData.sprites.length = 0;

+		_renderData.lights.length = 0;

+

+		var projectObject = function ( parent ) {

+

+			for ( var c = 0, cl = parent.children.length; c < cl; c ++ ) {

+

+				var object = parent.children[ c ];

+

+				if ( object.visible === false ) continue;

+

+				if ( object instanceof THREE.Light ) {

+

+					_renderData.lights.push( object );

+

+				} else if ( object instanceof THREE.Mesh || object instanceof THREE.Line ) {

+

+					if ( object.frustumCulled === false || _frustum.intersectsObject( object ) === true ) {

+

+						_object = getNextObjectInPool();

+						_object.object = object;

+

+						if ( object.renderDepth !== null ) {

+

+							_object.z = object.renderDepth;

+

+						} else {

+

+							_vector3.getPositionFromMatrix( object.matrixWorld );

+							_vector3.applyProjection( _viewProjectionMatrix );

+							_object.z = _vector3.z;

+

+						}

+

+						_renderData.objects.push( _object );

+

+					}

+

+				} else if ( object instanceof THREE.Sprite || object instanceof THREE.Particle ) {

+

+					_object = getNextObjectInPool();

+					_object.object = object;

+

+					// TODO: Find an elegant and performant solution and remove this dupe code.

+

+					if ( object.renderDepth !== null ) {

+

+						_object.z = object.renderDepth;

+

+					} else {

+

+						_vector3.getPositionFromMatrix( object.matrixWorld );

+						_vector3.applyProjection( _viewProjectionMatrix );

+						_object.z = _vector3.z;

+

+					}

+

+					_renderData.sprites.push( _object );

+

+				} else {

+

+					_object = getNextObjectInPool();

+					_object.object = object;

+

+					if ( object.renderDepth !== null ) {

+

+						_object.z = object.renderDepth;

+

+					} else {

+

+						_vector3.getPositionFromMatrix( object.matrixWorld );

+						_vector3.applyProjection( _viewProjectionMatrix );

+						_object.z = _vector3.z;

+

+					}

+

+					_renderData.objects.push( _object );

+

+				}

+

+				projectObject( object );

+

+			}

+

+		};

+

+		projectObject( root );

+

+		if ( sortObjects === true ) _renderData.objects.sort( painterSort );

+

+		return _renderData;

+

+	};

+

+	this.projectScene = function ( scene, camera, sortObjects, sortElements ) {

+

+		var visible = false,

+		o, ol, v, vl, f, fl, n, nl, c, cl, u, ul, object,

+		geometry, vertices, faces, face, faceVertexNormals, faceVertexUvs, uvs,

+		v1, v2, v3, v4, isFaceMaterial, objectMaterials;

+

+		_face3Count = 0;

+		_face4Count = 0;

+		_lineCount = 0;

+		_particleCount = 0;

+

+		_renderData.elements.length = 0;

+

+		scene.updateMatrixWorld();

+

+		if ( camera.parent === undefined ) camera.updateMatrixWorld();

+

+		_viewMatrix.copy( camera.matrixWorldInverse.getInverse( camera.matrixWorld ) );

+		_viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, _viewMatrix );

+

+		_normalViewMatrix.getInverse( _viewMatrix );

+		_normalViewMatrix.transpose();

+

+		_frustum.setFromMatrix( _viewProjectionMatrix );

+

+		_renderData = projectGraph( scene, sortObjects );

+

+		for ( o = 0, ol = _renderData.objects.length; o < ol; o ++ ) {

+

+			object = _renderData.objects[ o ].object;

+

+			_modelMatrix = object.matrixWorld;

+

+			_vertexCount = 0;

+

+			if ( object instanceof THREE.Mesh ) {

+

+				geometry = object.geometry;

+

+				vertices = geometry.vertices;

+				faces = geometry.faces;

+				faceVertexUvs = geometry.faceVertexUvs;

+

+				_normalMatrix.getInverse( _modelMatrix );

+				_normalMatrix.transpose();

+

+				isFaceMaterial = object.material instanceof THREE.MeshFaceMaterial;

+				objectMaterials = isFaceMaterial === true ? object.material : null;

+

+				for ( v = 0, vl = vertices.length; v < vl; v ++ ) {

+

+					_vertex = getNextVertexInPool();

+

+					_vertex.positionWorld.copy( vertices[ v ] ).applyMatrix4( _modelMatrix );

+					_vertex.positionScreen.copy( _vertex.positionWorld ).applyMatrix4( _viewProjectionMatrix );

+

+					_vertex.positionScreen.x /= _vertex.positionScreen.w;

+					_vertex.positionScreen.y /= _vertex.positionScreen.w;

+					_vertex.positionScreen.z /= _vertex.positionScreen.w;

+

+					_vertex.visible = ! ( _vertex.positionScreen.x < -1 || _vertex.positionScreen.x > 1 ||

+							      _vertex.positionScreen.y < -1 || _vertex.positionScreen.y > 1 ||

+							      _vertex.positionScreen.z < -1 || _vertex.positionScreen.z > 1 );

+

+				}

+

+				for ( f = 0, fl = faces.length; f < fl; f ++ ) {

+

+					face = faces[ f ];

+

+					var material = isFaceMaterial === true

+						? objectMaterials.materials[ face.materialIndex ]

+						: object.material;

+

+					if ( material === undefined ) continue;

+

+					var side = material.side;

+

+					if ( face instanceof THREE.Face3 ) {

+

+						v1 = _vertexPool[ face.a ];

+						v2 = _vertexPool[ face.b ];

+						v3 = _vertexPool[ face.c ];

+

+						_points3[ 0 ] = v1.positionScreen;

+						_points3[ 1 ] = v2.positionScreen;

+						_points3[ 2 ] = v3.positionScreen;

+

+						if ( v1.visible === true || v2.visible === true || v3.visible === true ||

+							_clipBox.isIntersectionBox( _boundingBox.setFromPoints( _points3 ) ) ) {

+

+							visible = ( ( v3.positionScreen.x - v1.positionScreen.x ) * ( v2.positionScreen.y - v1.positionScreen.y ) -

+								( v3.positionScreen.y - v1.positionScreen.y ) * ( v2.positionScreen.x - v1.positionScreen.x ) ) < 0;

+

+							if ( side === THREE.DoubleSide || visible === ( side === THREE.FrontSide ) ) {

+

+								_face = getNextFace3InPool();

+

+								_face.v1.copy( v1 );

+								_face.v2.copy( v2 );

+								_face.v3.copy( v3 );

+

+							} else {

+

+								continue;

+

+							}

+

+						} else {

+

+							continue;

+

+						}

+

+					} else if ( face instanceof THREE.Face4 ) {

+

+						v1 = _vertexPool[ face.a ];

+						v2 = _vertexPool[ face.b ];

+						v3 = _vertexPool[ face.c ];

+						v4 = _vertexPool[ face.d ];

+

+						_points4[ 0 ] = v1.positionScreen;

+						_points4[ 1 ] = v2.positionScreen;

+						_points4[ 2 ] = v3.positionScreen;

+						_points4[ 3 ] = v4.positionScreen;

+

+						if ( v1.visible === true || v2.visible === true || v3.visible === true || v4.visible === true ||

+							_clipBox.isIntersectionBox( _boundingBox.setFromPoints( _points4 ) ) ) {

+

+							visible = ( v4.positionScreen.x - v1.positionScreen.x ) * ( v2.positionScreen.y - v1.positionScreen.y ) -

+								( v4.positionScreen.y - v1.positionScreen.y ) * ( v2.positionScreen.x - v1.positionScreen.x ) < 0 ||

+								( v2.positionScreen.x - v3.positionScreen.x ) * ( v4.positionScreen.y - v3.positionScreen.y ) -

+								( v2.positionScreen.y - v3.positionScreen.y ) * ( v4.positionScreen.x - v3.positionScreen.x ) < 0;

+

+

+							if ( side === THREE.DoubleSide || visible === ( side === THREE.FrontSide ) ) {

+

+								_face = getNextFace4InPool();

+

+								_face.v1.copy( v1 );

+								_face.v2.copy( v2 );

+								_face.v3.copy( v3 );

+								_face.v4.copy( v4 );

+

+							} else {

+

+								continue;

+

+							}

+

+						} else {

+

+							continue;

+

+						}

+

+					}

+

+					_face.normalModel.copy( face.normal );

+

+					if ( visible === false && ( side === THREE.BackSide || side === THREE.DoubleSide ) ) {

+

+						_face.normalModel.negate();

+

+					}

+

+					_face.normalModel.applyMatrix3( _normalMatrix ).normalize();

+

+					_face.normalModelView.copy( _face.normalModel ).applyMatrix3( _normalViewMatrix );

+

+					_face.centroidModel.copy( face.centroid ).applyMatrix4( _modelMatrix );

+

+					faceVertexNormals = face.vertexNormals;

+

+					for ( n = 0, nl = faceVertexNormals.length; n < nl; n ++ ) {

+

+						var normalModel = _face.vertexNormalsModel[ n ];

+						normalModel.copy( faceVertexNormals[ n ] );

+

+						if ( visible === false && ( side === THREE.BackSide || side === THREE.DoubleSide ) ) {

+

+							normalModel.negate();

+

+						}

+

+						normalModel.applyMatrix3( _normalMatrix ).normalize();

+

+						var normalModelView = _face.vertexNormalsModelView[ n ];

+						normalModelView.copy( normalModel ).applyMatrix3( _normalViewMatrix );

+

+					}

+

+					_face.vertexNormalsLength = faceVertexNormals.length;

+

+					for ( c = 0, cl = faceVertexUvs.length; c < cl; c ++ ) {

+

+						uvs = faceVertexUvs[ c ][ f ];

+

+						if ( uvs === undefined ) continue;

+

+						for ( u = 0, ul = uvs.length; u < ul; u ++ ) {

+

+							_face.uvs[ c ][ u ] = uvs[ u ];

+

+						}

+

+					}

+

+					_face.color = face.color;

+					_face.material = material;

+

+					_centroid.copy( _face.centroidModel ).applyProjection( _viewProjectionMatrix );

+

+					_face.z = _centroid.z;

+

+					_renderData.elements.push( _face );

+

+				}

+

+			} else if ( object instanceof THREE.Line ) {

+

+				_modelViewProjectionMatrix.multiplyMatrices( _viewProjectionMatrix, _modelMatrix );

+

+				vertices = object.geometry.vertices;

+

+				v1 = getNextVertexInPool();

+				v1.positionScreen.copy( vertices[ 0 ] ).applyMatrix4( _modelViewProjectionMatrix );

+

+				// Handle LineStrip and LinePieces

+				var step = object.type === THREE.LinePieces ? 2 : 1;

+

+				for ( v = 1, vl = vertices.length; v < vl; v ++ ) {

+

+					v1 = getNextVertexInPool();

+					v1.positionScreen.copy( vertices[ v ] ).applyMatrix4( _modelViewProjectionMatrix );

+

+					if ( ( v + 1 ) % step > 0 ) continue;

+

+					v2 = _vertexPool[ _vertexCount - 2 ];

+

+					_clippedVertex1PositionScreen.copy( v1.positionScreen );

+					_clippedVertex2PositionScreen.copy( v2.positionScreen );

+

+					if ( clipLine( _clippedVertex1PositionScreen, _clippedVertex2PositionScreen ) === true ) {

+

+						// Perform the perspective divide

+						_clippedVertex1PositionScreen.multiplyScalar( 1 / _clippedVertex1PositionScreen.w );

+						_clippedVertex2PositionScreen.multiplyScalar( 1 / _clippedVertex2PositionScreen.w );

+

+						_line = getNextLineInPool();

+						_line.v1.positionScreen.copy( _clippedVertex1PositionScreen );

+						_line.v2.positionScreen.copy( _clippedVertex2PositionScreen );

+

+						_line.z = Math.max( _clippedVertex1PositionScreen.z, _clippedVertex2PositionScreen.z );

+

+						_line.material = object.material;

+

+						_renderData.elements.push( _line );

+

+					}

+

+				}

+

+			}

+

+		}

+

+		for ( o = 0, ol = _renderData.sprites.length; o < ol; o++ ) {

+

+			object = _renderData.sprites[ o ].object;

+

+			_modelMatrix = object.matrixWorld;

+

+			if ( object instanceof THREE.Particle ) {

+

+				_vector4.set( _modelMatrix.elements[12], _modelMatrix.elements[13], _modelMatrix.elements[14], 1 );

+				_vector4.applyMatrix4( _viewProjectionMatrix );

+

+				_vector4.z /= _vector4.w;

+

+				if ( _vector4.z > 0 && _vector4.z < 1 ) {

+

+					_particle = getNextParticleInPool();

+					_particle.object = object;

+					_particle.x = _vector4.x / _vector4.w;

+					_particle.y = _vector4.y / _vector4.w;

+					_particle.z = _vector4.z;

+

+					_particle.rotation = object.rotation.z;

+

+					_particle.scale.x = object.scale.x * Math.abs( _particle.x - ( _vector4.x + camera.projectionMatrix.elements[0] ) / ( _vector4.w + camera.projectionMatrix.elements[12] ) );

+					_particle.scale.y = object.scale.y * Math.abs( _particle.y - ( _vector4.y + camera.projectionMatrix.elements[5] ) / ( _vector4.w + camera.projectionMatrix.elements[13] ) );

+

+					_particle.material = object.material;

+

+					_renderData.elements.push( _particle );

+

+				}

+

+			}

+

+		}

+

+		if ( sortElements === true ) _renderData.elements.sort( painterSort );

+

+		return _renderData;

+

+	};

+

+	// Pools

+

+	function getNextObjectInPool() {

+

+		if ( _objectCount === _objectPoolLength ) {

+

+			var object = new THREE.RenderableObject();

+			_objectPool.push( object );

+			_objectPoolLength ++;

+			_objectCount ++;

+			return object;

+

+		}

+

+		return _objectPool[ _objectCount ++ ];

+

+	}

+

+	function getNextVertexInPool() {

+

+		if ( _vertexCount === _vertexPoolLength ) {

+

+			var vertex = new THREE.RenderableVertex();

+			_vertexPool.push( vertex );

+			_vertexPoolLength ++;

+			_vertexCount ++;

+			return vertex;

+

+		}

+

+		return _vertexPool[ _vertexCount ++ ];

+

+	}

+

+	function getNextFace3InPool() {

+

+		if ( _face3Count === _face3PoolLength ) {

+

+			var face = new THREE.RenderableFace3();

+			_face3Pool.push( face );

+			_face3PoolLength ++;

+			_face3Count ++;

+			return face;

+

+		}

+

+		return _face3Pool[ _face3Count ++ ];

+

+

+	}

+

+	function getNextFace4InPool() {

+

+		if ( _face4Count === _face4PoolLength ) {

+

+			var face = new THREE.RenderableFace4();

+			_face4Pool.push( face );

+			_face4PoolLength ++;

+			_face4Count ++;

+			return face;

+

+		}

+

+		return _face4Pool[ _face4Count ++ ];

+

+	}

+

+	function getNextLineInPool() {

+

+		if ( _lineCount === _linePoolLength ) {

+

+			var line = new THREE.RenderableLine();

+			_linePool.push( line );

+			_linePoolLength ++;

+			_lineCount ++

+			return line;

+

+		}

+

+		return _linePool[ _lineCount ++ ];

+

+	}

+

+	function getNextParticleInPool() {

+

+		if ( _particleCount === _particlePoolLength ) {

+

+			var particle = new THREE.RenderableParticle();

+			_particlePool.push( particle );

+			_particlePoolLength ++;

+			_particleCount ++

+			return particle;

+

+		}

+

+		return _particlePool[ _particleCount ++ ];

+

+	}

+

+	//

+

+	function painterSort( a, b ) {

+

+		return b.z - a.z;

+

+	}

+

+	function clipLine( s1, s2 ) {

+

+		var alpha1 = 0, alpha2 = 1,

+

+		// Calculate the boundary coordinate of each vertex for the near and far clip planes,

+		// Z = -1 and Z = +1, respectively.

+		bc1near =  s1.z + s1.w,

+		bc2near =  s2.z + s2.w,

+		bc1far =  - s1.z + s1.w,

+		bc2far =  - s2.z + s2.w;

+

+		if ( bc1near >= 0 && bc2near >= 0 && bc1far >= 0 && bc2far >= 0 ) {

+

+			// Both vertices lie entirely within all clip planes.

+			return true;

+

+		} else if ( ( bc1near < 0 && bc2near < 0) || (bc1far < 0 && bc2far < 0 ) ) {

+

+			// Both vertices lie entirely outside one of the clip planes.

+			return false;

+

+		} else {

+

+			// The line segment spans at least one clip plane.

+

+			if ( bc1near < 0 ) {

+

+				// v1 lies outside the near plane, v2 inside

+				alpha1 = Math.max( alpha1, bc1near / ( bc1near - bc2near ) );

+

+			} else if ( bc2near < 0 ) {

+

+				// v2 lies outside the near plane, v1 inside

+				alpha2 = Math.min( alpha2, bc1near / ( bc1near - bc2near ) );

+

+			}

+

+			if ( bc1far < 0 ) {

+

+				// v1 lies outside the far plane, v2 inside

+				alpha1 = Math.max( alpha1, bc1far / ( bc1far - bc2far ) );

+

+			} else if ( bc2far < 0 ) {

+

+				// v2 lies outside the far plane, v2 inside

+				alpha2 = Math.min( alpha2, bc1far / ( bc1far - bc2far ) );

+

+			}

+

+			if ( alpha2 < alpha1 ) {

+

+				// The line segment spans two boundaries, but is outside both of them.

+				// (This can't happen when we're only clipping against just near/far but good

+				//  to leave the check here for future usage if other clip planes are added.)

+				return false;

+

+			} else {

+

+				// Update the s1 and s2 vertices to match the clipped line segment.

+				s1.lerp( s2, alpha1 );

+				s2.lerp( s1, 1 - alpha2 );

+

+				return true;

+

+			}

+

+		}

+

+	}

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Face3 = function ( a, b, c, normal, color, materialIndex ) {

+

+	this.a = a;

+	this.b = b;

+	this.c = c;

+

+	this.normal = normal instanceof THREE.Vector3 ? normal : new THREE.Vector3();

+	this.vertexNormals = normal instanceof Array ? normal : [ ];

+

+	this.color = color instanceof THREE.Color ? color : new THREE.Color();

+	this.vertexColors = color instanceof Array ? color : [];

+

+	this.vertexTangents = [];

+

+	this.materialIndex = materialIndex !== undefined ? materialIndex : 0;

+

+	this.centroid = new THREE.Vector3();

+

+};

+

+THREE.Face3.prototype = {

+

+	constructor: THREE.Face3,

+

+	clone: function () {

+

+		var face = new THREE.Face3( this.a, this.b, this.c );

+

+		face.normal.copy( this.normal );

+		face.color.copy( this.color );

+		face.centroid.copy( this.centroid );

+

+		face.materialIndex = this.materialIndex;

+

+		var i, il;

+		for ( i = 0, il = this.vertexNormals.length; i < il; i ++ ) face.vertexNormals[ i ] = this.vertexNormals[ i ].clone();

+		for ( i = 0, il = this.vertexColors.length; i < il; i ++ ) face.vertexColors[ i ] = this.vertexColors[ i ].clone();

+		for ( i = 0, il = this.vertexTangents.length; i < il; i ++ ) face.vertexTangents[ i ] = this.vertexTangents[ i ].clone();

+

+		return face;

+

+	}

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Face4 = function ( a, b, c, d, normal, color, materialIndex ) {

+

+	this.a = a;

+	this.b = b;

+	this.c = c;

+	this.d = d;

+

+	this.normal = normal instanceof THREE.Vector3 ? normal : new THREE.Vector3();

+	this.vertexNormals = normal instanceof Array ? normal : [ ];

+

+	this.color = color instanceof THREE.Color ? color : new THREE.Color();

+	this.vertexColors = color instanceof Array ? color : [];

+

+	this.vertexTangents = [];

+

+	this.materialIndex = materialIndex !== undefined ? materialIndex : 0;

+

+	this.centroid = new THREE.Vector3();

+

+};

+

+THREE.Face4.prototype = {

+

+	constructor: THREE.Face4,

+

+	clone: function () {

+

+		var face = new THREE.Face4( this.a, this.b, this.c, this.d );

+

+		face.normal.copy( this.normal );

+		face.color.copy( this.color );

+		face.centroid.copy( this.centroid );

+

+		face.materialIndex = this.materialIndex;

+

+		var i, il;

+		for ( i = 0, il = this.vertexNormals.length; i < il; i ++ ) face.vertexNormals[ i ] = this.vertexNormals[ i ].clone();

+		for ( i = 0, il = this.vertexColors.length; i < il; i ++ ) face.vertexColors[ i ] = this.vertexColors[ i ].clone();

+		for ( i = 0, il = this.vertexTangents.length; i < il; i ++ ) face.vertexTangents[ i ] = this.vertexTangents[ i ].clone();

+

+		return face;

+

+	}

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author kile / http://kile.stravaganza.org/

+ * @author alteredq / http://alteredqualia.com/

+ * @author mikael emtinger / http://gomo.se/

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ * @author bhouston / http://exocortex.com

+ */

+

+THREE.Geometry = function () {

+

+	THREE.EventDispatcher.call( this );

+

+	this.id = THREE.GeometryIdCount ++;

+

+	this.name = '';

+

+	this.vertices = [];

+	this.colors = [];  // one-to-one vertex colors, used in ParticleSystem, Line and Ribbon

+	this.normals = []; // one-to-one vertex normals, used in Ribbon

+

+	this.faces = [];

+

+	this.faceUvs = [[]];

+	this.faceVertexUvs = [[]];

+

+	this.morphTargets = [];

+	this.morphColors = [];

+	this.morphNormals = [];

+

+	this.skinWeights = [];

+	this.skinIndices = [];

+

+	this.lineDistances = [];

+

+	this.boundingBox = null;

+	this.boundingSphere = null;

+

+	this.hasTangents = false;

+

+	this.dynamic = true; // the intermediate typed arrays will be deleted when set to false

+

+	// update flags

+

+	this.verticesNeedUpdate = false;

+	this.elementsNeedUpdate = false;

+	this.uvsNeedUpdate = false;

+	this.normalsNeedUpdate = false;

+	this.tangentsNeedUpdate = false;

+	this.colorsNeedUpdate = false;

+	this.lineDistancesNeedUpdate = false;

+

+	this.buffersNeedUpdate = false;

+

+};

+

+THREE.Geometry.prototype = {

+

+	constructor: THREE.Geometry,

+

+	applyMatrix: function ( matrix ) {

+

+		var normalMatrix = new THREE.Matrix3().getInverse( matrix ).transpose();

+

+		for ( var i = 0, il = this.vertices.length; i < il; i ++ ) {

+

+			var vertex = this.vertices[ i ];

+			vertex.applyMatrix4( matrix );

+

+		}

+

+		for ( var i = 0, il = this.faces.length; i < il; i ++ ) {

+

+			var face = this.faces[ i ];

+			face.normal.applyMatrix3( normalMatrix ).normalize();

+

+			for ( var j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {

+

+				face.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();

+

+			}

+

+			face.centroid.applyMatrix4( matrix );

+

+		}

+

+	},

+

+	computeCentroids: function () {

+

+		var f, fl, face;

+

+		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			face = this.faces[ f ];

+			face.centroid.set( 0, 0, 0 );

+

+			if ( face instanceof THREE.Face3 ) {

+

+				face.centroid.add( this.vertices[ face.a ] );

+				face.centroid.add( this.vertices[ face.b ] );

+				face.centroid.add( this.vertices[ face.c ] );

+				face.centroid.divideScalar( 3 );

+

+			} else if ( face instanceof THREE.Face4 ) {

+

+				face.centroid.add( this.vertices[ face.a ] );

+				face.centroid.add( this.vertices[ face.b ] );

+				face.centroid.add( this.vertices[ face.c ] );

+				face.centroid.add( this.vertices[ face.d ] );

+				face.centroid.divideScalar( 4 );

+

+			}

+

+		}

+

+	},

+

+	computeFaceNormals: function () {

+

+		var cb = new THREE.Vector3(), ab = new THREE.Vector3();

+

+		for ( var f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			var face = this.faces[ f ];

+

+			var vA = this.vertices[ face.a ];

+			var vB = this.vertices[ face.b ];

+			var vC = this.vertices[ face.c ];

+

+			cb.subVectors( vC, vB );

+			ab.subVectors( vA, vB );

+			cb.cross( ab );

+

+			cb.normalize();

+

+			face.normal.copy( cb );

+

+		}

+

+	},

+

+	computeVertexNormals: function ( areaWeighted ) {

+

+		var v, vl, f, fl, face, vertices;

+

+		// create internal buffers for reuse when calling this method repeatedly

+		// (otherwise memory allocation / deallocation every frame is big resource hog)

+

+		if ( this.__tmpVertices === undefined ) {

+

+			this.__tmpVertices = new Array( this.vertices.length );

+			vertices = this.__tmpVertices;

+

+			for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {

+

+				vertices[ v ] = new THREE.Vector3();

+

+			}

+

+			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+				face = this.faces[ f ];

+

+				if ( face instanceof THREE.Face3 ) {

+

+					face.vertexNormals = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];

+

+				} else if ( face instanceof THREE.Face4 ) {

+

+					face.vertexNormals = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];

+

+				}

+

+			}

+

+		} else {

+

+			vertices = this.__tmpVertices;

+

+			for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {

+

+				vertices[ v ].set( 0, 0, 0 );

+

+			}

+

+		}

+

+		if ( areaWeighted ) {

+

+			// vertex normals weighted by triangle areas

+			// http://www.iquilezles.org/www/articles/normals/normals.htm

+

+			var vA, vB, vC, vD;

+			var cb = new THREE.Vector3(), ab = new THREE.Vector3(),

+				db = new THREE.Vector3(), dc = new THREE.Vector3(), bc = new THREE.Vector3();

+

+			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+				face = this.faces[ f ];

+

+				if ( face instanceof THREE.Face3 ) {

+

+					vA = this.vertices[ face.a ];

+					vB = this.vertices[ face.b ];

+					vC = this.vertices[ face.c ];

+

+					cb.subVectors( vC, vB );

+					ab.subVectors( vA, vB );

+					cb.cross( ab );

+

+					vertices[ face.a ].add( cb );

+					vertices[ face.b ].add( cb );

+					vertices[ face.c ].add( cb );

+

+				} else if ( face instanceof THREE.Face4 ) {

+

+					vA = this.vertices[ face.a ];

+					vB = this.vertices[ face.b ];

+					vC = this.vertices[ face.c ];

+					vD = this.vertices[ face.d ];

+

+					// abd

+

+					db.subVectors( vD, vB );

+					ab.subVectors( vA, vB );

+					db.cross( ab );

+

+					vertices[ face.a ].add( db );

+					vertices[ face.b ].add( db );

+					vertices[ face.d ].add( db );

+

+					// bcd

+

+					dc.subVectors( vD, vC );

+					bc.subVectors( vB, vC );

+					dc.cross( bc );

+

+					vertices[ face.b ].add( dc );

+					vertices[ face.c ].add( dc );

+					vertices[ face.d ].add( dc );

+

+				}

+

+			}

+

+		} else {

+

+			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+				face = this.faces[ f ];

+

+				if ( face instanceof THREE.Face3 ) {

+

+					vertices[ face.a ].add( face.normal );

+					vertices[ face.b ].add( face.normal );

+					vertices[ face.c ].add( face.normal );

+

+				} else if ( face instanceof THREE.Face4 ) {

+

+					vertices[ face.a ].add( face.normal );

+					vertices[ face.b ].add( face.normal );

+					vertices[ face.c ].add( face.normal );

+					vertices[ face.d ].add( face.normal );

+

+				}

+

+			}

+

+		}

+

+		for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {

+

+			vertices[ v ].normalize();

+

+		}

+

+		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			face = this.faces[ f ];

+

+			if ( face instanceof THREE.Face3 ) {

+

+				face.vertexNormals[ 0 ].copy( vertices[ face.a ] );

+				face.vertexNormals[ 1 ].copy( vertices[ face.b ] );

+				face.vertexNormals[ 2 ].copy( vertices[ face.c ] );

+

+			} else if ( face instanceof THREE.Face4 ) {

+

+				face.vertexNormals[ 0 ].copy( vertices[ face.a ] );

+				face.vertexNormals[ 1 ].copy( vertices[ face.b ] );

+				face.vertexNormals[ 2 ].copy( vertices[ face.c ] );

+				face.vertexNormals[ 3 ].copy( vertices[ face.d ] );

+

+			}

+

+		}

+

+	},

+

+	computeMorphNormals: function () {

+

+		var i, il, f, fl, face;

+

+		// save original normals

+		// - create temp variables on first access

+		//   otherwise just copy (for faster repeated calls)

+

+		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			face = this.faces[ f ];

+

+			if ( ! face.__originalFaceNormal ) {

+

+				face.__originalFaceNormal = face.normal.clone();

+

+			} else {

+

+				face.__originalFaceNormal.copy( face.normal );

+

+			}

+

+			if ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];

+

+			for ( i = 0, il = face.vertexNormals.length; i < il; i ++ ) {

+

+				if ( ! face.__originalVertexNormals[ i ] ) {

+

+					face.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();

+

+				} else {

+

+					face.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );

+

+				}

+

+			}

+

+		}

+

+		// use temp geometry to compute face and vertex normals for each morph

+

+		var tmpGeo = new THREE.Geometry();

+		tmpGeo.faces = this.faces;

+

+		for ( i = 0, il = this.morphTargets.length; i < il; i ++ ) {

+

+			// create on first access

+

+			if ( ! this.morphNormals[ i ] ) {

+

+				this.morphNormals[ i ] = {};

+				this.morphNormals[ i ].faceNormals = [];

+				this.morphNormals[ i ].vertexNormals = [];

+

+				var dstNormalsFace = this.morphNormals[ i ].faceNormals;

+				var dstNormalsVertex = this.morphNormals[ i ].vertexNormals;

+

+				var faceNormal, vertexNormals;

+

+				for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+					face = this.faces[ f ];

+

+					faceNormal = new THREE.Vector3();

+

+					if ( face instanceof THREE.Face3 ) {

+

+						vertexNormals = { a: new THREE.Vector3(), b: new THREE.Vector3(), c: new THREE.Vector3() };

+

+					} else {

+

+						vertexNormals = { a: new THREE.Vector3(), b: new THREE.Vector3(), c: new THREE.Vector3(), d: new THREE.Vector3() };

+

+					}

+

+					dstNormalsFace.push( faceNormal );

+					dstNormalsVertex.push( vertexNormals );

+

+				}

+

+			}

+

+			var morphNormals = this.morphNormals[ i ];

+

+			// set vertices to morph target

+

+			tmpGeo.vertices = this.morphTargets[ i ].vertices;

+

+			// compute morph normals

+

+			tmpGeo.computeFaceNormals();

+			tmpGeo.computeVertexNormals();

+

+			// store morph normals

+

+			var faceNormal, vertexNormals;

+

+			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+				face = this.faces[ f ];

+

+				faceNormal = morphNormals.faceNormals[ f ];

+				vertexNormals = morphNormals.vertexNormals[ f ];

+

+				faceNormal.copy( face.normal );

+

+				if ( face instanceof THREE.Face3 ) {

+

+					vertexNormals.a.copy( face.vertexNormals[ 0 ] );

+					vertexNormals.b.copy( face.vertexNormals[ 1 ] );

+					vertexNormals.c.copy( face.vertexNormals[ 2 ] );

+

+				} else {

+

+					vertexNormals.a.copy( face.vertexNormals[ 0 ] );

+					vertexNormals.b.copy( face.vertexNormals[ 1 ] );

+					vertexNormals.c.copy( face.vertexNormals[ 2 ] );

+					vertexNormals.d.copy( face.vertexNormals[ 3 ] );

+

+				}

+

+			}

+

+		}

+

+		// restore original normals

+

+		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			face = this.faces[ f ];

+

+			face.normal = face.__originalFaceNormal;

+			face.vertexNormals = face.__originalVertexNormals;

+

+		}

+

+	},

+

+	computeTangents: function () {

+

+		// based on http://www.terathon.com/code/tangent.html

+		// tangents go to vertices

+

+		var f, fl, v, vl, i, il, vertexIndex,

+			face, uv, vA, vB, vC, uvA, uvB, uvC,

+			x1, x2, y1, y2, z1, z2,

+			s1, s2, t1, t2, r, t, test,

+			tan1 = [], tan2 = [],

+			sdir = new THREE.Vector3(), tdir = new THREE.Vector3(),

+			tmp = new THREE.Vector3(), tmp2 = new THREE.Vector3(),

+			n = new THREE.Vector3(), w;

+

+		for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {

+

+			tan1[ v ] = new THREE.Vector3();

+			tan2[ v ] = new THREE.Vector3();

+

+		}

+

+		function handleTriangle( context, a, b, c, ua, ub, uc ) {

+

+			vA = context.vertices[ a ];

+			vB = context.vertices[ b ];

+			vC = context.vertices[ c ];

+

+			uvA = uv[ ua ];

+			uvB = uv[ ub ];

+			uvC = uv[ uc ];

+

+			x1 = vB.x - vA.x;

+			x2 = vC.x - vA.x;

+			y1 = vB.y - vA.y;

+			y2 = vC.y - vA.y;

+			z1 = vB.z - vA.z;

+			z2 = vC.z - vA.z;

+

+			s1 = uvB.x - uvA.x;

+			s2 = uvC.x - uvA.x;

+			t1 = uvB.y - uvA.y;

+			t2 = uvC.y - uvA.y;

+

+			r = 1.0 / ( s1 * t2 - s2 * t1 );

+			sdir.set( ( t2 * x1 - t1 * x2 ) * r,

+					  ( t2 * y1 - t1 * y2 ) * r,

+					  ( t2 * z1 - t1 * z2 ) * r );

+			tdir.set( ( s1 * x2 - s2 * x1 ) * r,

+					  ( s1 * y2 - s2 * y1 ) * r,

+					  ( s1 * z2 - s2 * z1 ) * r );

+

+			tan1[ a ].add( sdir );

+			tan1[ b ].add( sdir );

+			tan1[ c ].add( sdir );

+

+			tan2[ a ].add( tdir );

+			tan2[ b ].add( tdir );

+			tan2[ c ].add( tdir );

+

+		}

+

+		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			face = this.faces[ f ];

+			uv = this.faceVertexUvs[ 0 ][ f ]; // use UV layer 0 for tangents

+

+			if ( face instanceof THREE.Face3 ) {

+

+				handleTriangle( this, face.a, face.b, face.c, 0, 1, 2 );

+

+			} else if ( face instanceof THREE.Face4 ) {

+

+				handleTriangle( this, face.a, face.b, face.d, 0, 1, 3 );

+				handleTriangle( this, face.b, face.c, face.d, 1, 2, 3 );

+

+			}

+

+		}

+

+		var faceIndex = [ 'a', 'b', 'c', 'd' ];

+

+		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

+

+			face = this.faces[ f ];

+

+			for ( i = 0; i < face.vertexNormals.length; i++ ) {

+

+				n.copy( face.vertexNormals[ i ] );

+

+				vertexIndex = face[ faceIndex[ i ] ];

+

+				t = tan1[ vertexIndex ];

+

+				// Gram-Schmidt orthogonalize

+

+				tmp.copy( t );

+				tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();

+

+				// Calculate handedness

+

+				tmp2.crossVectors( face.vertexNormals[ i ], t );

+				test = tmp2.dot( tan2[ vertexIndex ] );

+				w = (test < 0.0) ? -1.0 : 1.0;

+

+				face.vertexTangents[ i ] = new THREE.Vector4( tmp.x, tmp.y, tmp.z, w );

+

+			}

+

+		}

+

+		this.hasTangents = true;

+

+	},

+

+	computeLineDistances: function ( ) {

+

+		var d = 0;

+		var vertices = this.vertices;

+

+		for ( var i = 0, il = vertices.length; i < il; i ++ ) {

+

+			if ( i > 0 ) {

+

+				d += vertices[ i ].distanceTo( vertices[ i - 1 ] );

+

+			}

+

+			this.lineDistances[ i ] = d;

+

+		}

+

+	},

+

+	computeBoundingBox: function () {

+

+		if ( this.boundingBox === null ) {

+

+			this.boundingBox = new THREE.Box3();

+

+		}

+

+		this.boundingBox.setFromPoints( this.vertices );

+

+	},

+

+	computeBoundingSphere: function () {

+

+		if ( this.boundingSphere === null ) {

+

+			this.boundingSphere = new THREE.Sphere();

+

+		}

+

+		this.boundingSphere.setFromCenterAndPoints( this.boundingSphere.center, this.vertices );

+

+	},

+

+	/*

+	 * Checks for duplicate vertices with hashmap.

+	 * Duplicated vertices are removed

+	 * and faces' vertices are updated.

+	 */

+

+	mergeVertices: function () {

+

+		var verticesMap = {}; // Hashmap for looking up vertice by position coordinates (and making sure they are unique)

+		var unique = [], changes = [];

+

+		var v, key;

+		var precisionPoints = 4; // number of decimal points, eg. 4 for epsilon of 0.0001

+		var precision = Math.pow( 10, precisionPoints );

+		var i,il, face;

+		var indices, k, j, jl, u;

+

+		// reset cache of vertices as it now will be changing.

+		this.__tmpVertices = undefined;

+

+		for ( i = 0, il = this.vertices.length; i < il; i ++ ) {

+

+			v = this.vertices[ i ];

+			key = [ Math.round( v.x * precision ), Math.round( v.y * precision ), Math.round( v.z * precision ) ].join( '_' );

+

+			if ( verticesMap[ key ] === undefined ) {

+

+				verticesMap[ key ] = i;

+				unique.push( this.vertices[ i ] );

+				changes[ i ] = unique.length - 1;

+

+			} else {

+

+				//console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);

+				changes[ i ] = changes[ verticesMap[ key ] ];

+

+			}

+

+		};

+

+

+		// if faces are completely degenerate after merging vertices, we

+		// have to remove them from the geometry.

+		var faceIndicesToRemove = [];

+

+		for( i = 0, il = this.faces.length; i < il; i ++ ) {

+

+			face = this.faces[ i ];

+

+			if ( face instanceof THREE.Face3 ) {

+

+				face.a = changes[ face.a ];

+				face.b = changes[ face.b ];

+				face.c = changes[ face.c ];

+

+				indices = [ face.a, face.b, face.c ];

+

+				var dupIndex = -1;

+

+				// if any duplicate vertices are found in a Face3

+				// we have to remove the face as nothing can be saved

+				for ( var n = 0; n < 3; n ++ ) {

+					if ( indices[ n ] == indices[ ( n + 1 ) % 3 ] ) {

+

+						dupIndex = n;

+						faceIndicesToRemove.push( i );

+						break;

+

+					}

+				}

+

+			} else if ( face instanceof THREE.Face4 ) {

+

+				face.a = changes[ face.a ];

+				face.b = changes[ face.b ];

+				face.c = changes[ face.c ];

+				face.d = changes[ face.d ];

+

+				// check dups in (a, b, c, d) and convert to -> face3

+

+				indices = [ face.a, face.b, face.c, face.d ];

+

+				var dupIndex = -1;

+

+				for ( var n = 0; n < 4; n ++ ) {

+

+					if ( indices[ n ] == indices[ ( n + 1 ) % 4 ] ) {

+

+						// if more than one duplicated vertex is found

+						// we can't generate any valid Face3's, thus

+						// we need to remove this face complete.

+						if ( dupIndex >= 0 ) {

+

+							faceIndicesToRemove.push( i );

+

+						}

+

+						dupIndex = n;

+

+					}

+				}

+

+				if ( dupIndex >= 0 ) {

+

+					indices.splice( dupIndex, 1 );

+

+					var newFace = new THREE.Face3( indices[0], indices[1], indices[2], face.normal, face.color, face.materialIndex );

+

+					for ( j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {

+

+						u = this.faceVertexUvs[ j ][ i ];

+

+						if ( u ) {

+							u.splice( dupIndex, 1 );

+						}

+

+					}

+

+					if( face.vertexNormals && face.vertexNormals.length > 0) {

+

+						newFace.vertexNormals = face.vertexNormals;

+						newFace.vertexNormals.splice( dupIndex, 1 );

+

+					}

+

+					if( face.vertexColors && face.vertexColors.length > 0 ) {

+

+						newFace.vertexColors = face.vertexColors;

+						newFace.vertexColors.splice( dupIndex, 1 );

+					}

+

+					this.faces[ i ] = newFace;

+				}

+

+			}

+

+		}

+

+		for ( i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {

+

+			this.faces.splice( i, 1 );

+

+			for ( j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {

+

+				this.faceVertexUvs[ j ].splice( i, 1 );

+

+			}

+

+		}

+

+		// Use unique set of vertices

+

+		var diff = this.vertices.length - unique.length;

+		this.vertices = unique;

+		return diff;

+

+	},

+

+	clone: function () {

+

+		var geometry = new THREE.Geometry();

+

+		var vertices = this.vertices;

+

+		for ( var i = 0, il = vertices.length; i < il; i ++ ) {

+

+			geometry.vertices.push( vertices[ i ].clone() );

+

+		}

+

+		var faces = this.faces;

+

+		for ( var i = 0, il = faces.length; i < il; i ++ ) {

+

+			geometry.faces.push( faces[ i ].clone() );

+

+		}

+

+		var uvs = this.faceVertexUvs[ 0 ];

+

+		for ( var i = 0, il = uvs.length; i < il; i ++ ) {

+

+			var uv = uvs[ i ], uvCopy = [];

+

+			for ( var j = 0, jl = uv.length; j < jl; j ++ ) {

+

+				uvCopy.push( new THREE.Vector2( uv[ j ].x, uv[ j ].y ) );

+

+			}

+

+			geometry.faceVertexUvs[ 0 ].push( uvCopy );

+

+		}

+

+		return geometry;

+

+	},

+

+	dispose: function () {

+

+		this.dispatchEvent( { type: 'dispose' } );

+

+	}

+

+};

+

+THREE.GeometryIdCount = 0;

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.BufferGeometry = function () {

+

+	THREE.EventDispatcher.call( this );

+

+	this.id = THREE.GeometryIdCount ++;

+

+	// attributes

+

+	this.attributes = {};

+

+	// attributes typed arrays are kept only if dynamic flag is set

+

+	this.dynamic = false;

+

+	// offsets for chunks when using indexed elements

+

+	this.offsets = [];

+

+	// boundings

+

+	this.boundingBox = null;

+	this.boundingSphere = null;

+

+	this.hasTangents = false;

+

+	// for compatibility

+

+	this.morphTargets = [];

+

+};

+

+THREE.BufferGeometry.prototype = {

+

+	constructor : THREE.BufferGeometry,

+

+	applyMatrix: function ( matrix ) {

+

+		var positionArray;

+		var normalArray;

+

+		if ( this.attributes[ "position" ] ) positionArray = this.attributes[ "position" ].array;

+		if ( this.attributes[ "normal" ] ) normalArray = this.attributes[ "normal" ].array;

+

+		if ( positionArray !== undefined ) {

+

+			matrix.multiplyVector3Array( positionArray );

+			this.verticesNeedUpdate = true;

+

+		}

+

+		if ( normalArray !== undefined ) {

+

+			var normalMatrix = new THREE.Matrix3();

+			normalMatrix.getInverse( matrix ).transpose();

+

+			normalMatrix.multiplyVector3Array( normalArray );

+

+			this.normalizeNormals();

+

+			this.normalsNeedUpdate = true;

+

+		}

+

+	},

+

+	computeBoundingBox: function () {

+

+		if ( this.boundingBox === null ) {

+

+			this.boundingBox = new THREE.Box3();

+

+		}

+

+		var positions = this.attributes[ "position" ].array;

+

+		if ( positions ) {

+

+			var bb = this.boundingBox;

+			var x, y, z;

+

+			if( positions.length >= 3 ) {

+				bb.min.x = bb.max.x = positions[ 0 ];

+				bb.min.y = bb.max.y = positions[ 1 ];

+				bb.min.z = bb.max.z = positions[ 2 ];

+			}

+

+			for ( var i = 3, il = positions.length; i < il; i += 3 ) {

+

+				x = positions[ i ];

+				y = positions[ i + 1 ];

+				z = positions[ i + 2 ];

+

+				// bounding box

+

+				if ( x < bb.min.x ) {

+

+					bb.min.x = x;

+

+				} else if ( x > bb.max.x ) {

+

+					bb.max.x = x;

+

+				}

+

+				if ( y < bb.min.y ) {

+

+					bb.min.y = y;

+

+				} else if ( y > bb.max.y ) {

+

+					bb.max.y = y;

+

+				}

+

+				if ( z < bb.min.z ) {

+

+					bb.min.z = z;

+

+				} else if ( z > bb.max.z ) {

+

+					bb.max.z = z;

+

+				}

+

+			}

+

+		}

+

+		if ( positions === undefined || positions.length === 0 ) {

+

+			this.boundingBox.min.set( 0, 0, 0 );

+			this.boundingBox.max.set( 0, 0, 0 );

+

+		}

+

+	},

+

+	computeBoundingSphere: function () {

+

+		if ( this.boundingSphere === null ) {

+

+			this.boundingSphere = new THREE.Sphere();

+

+		}

+

+		var positions = this.attributes[ "position" ].array;

+

+		if ( positions ) {

+

+			var radiusSq, maxRadiusSq = 0;

+			var x, y, z;

+

+			for ( var i = 0, il = positions.length; i < il; i += 3 ) {

+

+				x = positions[ i ];

+				y = positions[ i + 1 ];

+				z = positions[ i + 2 ];

+

+				radiusSq =  x * x + y * y + z * z;

+				if ( radiusSq > maxRadiusSq ) maxRadiusSq = radiusSq;

+

+			}

+

+			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );

+

+		}

+

+	},

+

+	computeVertexNormals: function () {

+

+		if ( this.attributes[ "position" ] ) {

+

+			var i, il;

+			var j, jl;

+

+			var nVertexElements = this.attributes[ "position" ].array.length;

+

+			if ( this.attributes[ "normal" ] === undefined ) {

+

+				this.attributes[ "normal" ] = {

+

+					itemSize: 3,

+					array: new Float32Array( nVertexElements ),

+					numItems: nVertexElements

+

+				};

+

+			} else {

+

+				// reset existing normals to zero

+

+				for ( i = 0, il = this.attributes[ "normal" ].array.length; i < il; i ++ ) {

+

+					this.attributes[ "normal" ].array[ i ] = 0;

+

+				}

+

+			}

+

+			var positions = this.attributes[ "position" ].array;

+			var normals = this.attributes[ "normal" ].array;

+

+			var vA, vB, vC, x, y, z,

+

+			pA = new THREE.Vector3(),

+			pB = new THREE.Vector3(),

+			pC = new THREE.Vector3(),

+

+			cb = new THREE.Vector3(),

+			ab = new THREE.Vector3();

+

+			// indexed elements

+

+			if ( this.attributes[ "index" ] ) {

+

+				var indices = this.attributes[ "index" ].array;

+

+				var offsets = this.offsets;

+

+				for ( j = 0, jl = offsets.length; j < jl; ++ j ) {

+

+					var start = offsets[ j ].start;

+					var count = offsets[ j ].count;

+					var index = offsets[ j ].index;

+

+					for ( i = start, il = start + count; i < il; i += 3 ) {

+

+						vA = index + indices[ i ];

+						vB = index + indices[ i + 1 ];

+						vC = index + indices[ i + 2 ];

+

+						x = positions[ vA * 3 ];

+						y = positions[ vA * 3 + 1 ];

+						z = positions[ vA * 3 + 2 ];

+						pA.set( x, y, z );

+

+						x = positions[ vB * 3 ];

+						y = positions[ vB * 3 + 1 ];

+						z = positions[ vB * 3 + 2 ];

+						pB.set( x, y, z );

+

+						x = positions[ vC * 3 ];

+						y = positions[ vC * 3 + 1 ];

+						z = positions[ vC * 3 + 2 ];

+						pC.set( x, y, z );

+

+						cb.subVectors( pC, pB );

+						ab.subVectors( pA, pB );

+						cb.cross( ab );

+

+						normals[ vA * 3 ]     += cb.x;

+						normals[ vA * 3 + 1 ] += cb.y;

+						normals[ vA * 3 + 2 ] += cb.z;

+

+						normals[ vB * 3 ]     += cb.x;

+						normals[ vB * 3 + 1 ] += cb.y;

+						normals[ vB * 3 + 2 ] += cb.z;

+

+						normals[ vC * 3 ]     += cb.x;

+						normals[ vC * 3 + 1 ] += cb.y;

+						normals[ vC * 3 + 2 ] += cb.z;

+

+					}

+

+				}

+

+			// non-indexed elements (unconnected triangle soup)

+

+			} else {

+

+				for ( i = 0, il = positions.length; i < il; i += 9 ) {

+

+					x = positions[ i ];

+					y = positions[ i + 1 ];

+					z = positions[ i + 2 ];

+					pA.set( x, y, z );

+

+					x = positions[ i + 3 ];

+					y = positions[ i + 4 ];

+					z = positions[ i + 5 ];

+					pB.set( x, y, z );

+

+					x = positions[ i + 6 ];

+					y = positions[ i + 7 ];

+					z = positions[ i + 8 ];

+					pC.set( x, y, z );

+

+					cb.subVectors( pC, pB );

+					ab.subVectors( pA, pB );

+					cb.cross( ab );

+

+					normals[ i ] 	 = cb.x;

+					normals[ i + 1 ] = cb.y;

+					normals[ i + 2 ] = cb.z;

+

+					normals[ i + 3 ] = cb.x;

+					normals[ i + 4 ] = cb.y;

+					normals[ i + 5 ] = cb.z;

+

+					normals[ i + 6 ] = cb.x;

+					normals[ i + 7 ] = cb.y;

+					normals[ i + 8 ] = cb.z;

+

+				}

+

+			}

+

+			this.normalizeNormals();

+

+			this.normalsNeedUpdate = true;

+

+		}

+

+	},

+

+	normalizeNormals: function () {

+

+		var normals = this.attributes[ "normal" ].array;

+

+		var x, y, z, n;

+

+		for ( var i = 0, il = normals.length; i < il; i += 3 ) {

+

+			x = normals[ i ];

+			y = normals[ i + 1 ];

+			z = normals[ i + 2 ];

+

+			n = 1.0 / Math.sqrt( x * x + y * y + z * z );

+

+			normals[ i ] 	 *= n;

+			normals[ i + 1 ] *= n;

+			normals[ i + 2 ] *= n;

+

+		}

+

+	},

+

+	computeTangents: function () {

+

+		// based on http://www.terathon.com/code/tangent.html

+		// (per vertex tangents)

+

+		if ( this.attributes[ "index" ] === undefined ||

+			 this.attributes[ "position" ] === undefined ||

+			 this.attributes[ "normal" ] === undefined ||

+			 this.attributes[ "uv" ] === undefined ) {

+

+			console.warn( "Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()" );

+			return;

+

+		}

+

+		var indices = this.attributes[ "index" ].array;

+		var positions = this.attributes[ "position" ].array;

+		var normals = this.attributes[ "normal" ].array;

+		var uvs = this.attributes[ "uv" ].array;

+

+		var nVertices = positions.length / 3;

+

+		if ( this.attributes[ "tangent" ] === undefined ) {

+

+			var nTangentElements = 4 * nVertices;

+

+			this.attributes[ "tangent" ] = {

+

+				itemSize: 4,

+				array: new Float32Array( nTangentElements ),

+				numItems: nTangentElements

+

+			};

+

+		}

+

+		var tangents = this.attributes[ "tangent" ].array;

+

+		var tan1 = [], tan2 = [];

+

+		for ( var k = 0; k < nVertices; k ++ ) {

+

+			tan1[ k ] = new THREE.Vector3();

+			tan2[ k ] = new THREE.Vector3();

+

+		}

+

+		var xA, yA, zA,

+			xB, yB, zB,

+			xC, yC, zC,

+

+			uA, vA,

+			uB, vB,

+			uC, vC,

+

+			x1, x2, y1, y2, z1, z2,

+			s1, s2, t1, t2, r;

+

+		var sdir = new THREE.Vector3(), tdir = new THREE.Vector3();

+

+		function handleTriangle( a, b, c ) {

+

+			xA = positions[ a * 3 ];

+			yA = positions[ a * 3 + 1 ];

+			zA = positions[ a * 3 + 2 ];

+

+			xB = positions[ b * 3 ];

+			yB = positions[ b * 3 + 1 ];

+			zB = positions[ b * 3 + 2 ];

+

+			xC = positions[ c * 3 ];

+			yC = positions[ c * 3 + 1 ];

+			zC = positions[ c * 3 + 2 ];

+

+			uA = uvs[ a * 2 ];

+			vA = uvs[ a * 2 + 1 ];

+

+			uB = uvs[ b * 2 ];

+			vB = uvs[ b * 2 + 1 ];

+

+			uC = uvs[ c * 2 ];

+			vC = uvs[ c * 2 + 1 ];

+

+			x1 = xB - xA;

+			x2 = xC - xA;

+

+			y1 = yB - yA;

+			y2 = yC - yA;

+

+			z1 = zB - zA;

+			z2 = zC - zA;

+

+			s1 = uB - uA;

+			s2 = uC - uA;

+

+			t1 = vB - vA;

+			t2 = vC - vA;

+

+			r = 1.0 / ( s1 * t2 - s2 * t1 );

+

+			sdir.set(

+				( t2 * x1 - t1 * x2 ) * r,

+				( t2 * y1 - t1 * y2 ) * r,

+				( t2 * z1 - t1 * z2 ) * r

+			);

+

+			tdir.set(

+				( s1 * x2 - s2 * x1 ) * r,

+				( s1 * y2 - s2 * y1 ) * r,

+				( s1 * z2 - s2 * z1 ) * r

+			);

+

+			tan1[ a ].add( sdir );

+			tan1[ b ].add( sdir );

+			tan1[ c ].add( sdir );

+

+			tan2[ a ].add( tdir );

+			tan2[ b ].add( tdir );

+			tan2[ c ].add( tdir );

+

+		}

+

+		var i, il;

+		var j, jl;

+		var iA, iB, iC;

+

+		var offsets = this.offsets;

+

+		for ( j = 0, jl = offsets.length; j < jl; ++ j ) {

+

+			var start = offsets[ j ].start;

+			var count = offsets[ j ].count;

+			var index = offsets[ j ].index;

+

+			for ( i = start, il = start + count; i < il; i += 3 ) {

+

+				iA = index + indices[ i ];

+				iB = index + indices[ i + 1 ];

+				iC = index + indices[ i + 2 ];

+

+				handleTriangle( iA, iB, iC );

+

+			}

+

+		}

+

+		var tmp = new THREE.Vector3(), tmp2 = new THREE.Vector3();

+		var n = new THREE.Vector3(), n2 = new THREE.Vector3();

+		var w, t, test;

+

+		function handleVertex( v ) {

+

+			n.x = normals[ v * 3 ];

+			n.y = normals[ v * 3 + 1 ];

+			n.z = normals[ v * 3 + 2 ];

+

+			n2.copy( n );

+

+			t = tan1[ v ];

+

+			// Gram-Schmidt orthogonalize

+

+			tmp.copy( t );

+			tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();

+

+			// Calculate handedness

+

+			tmp2.crossVectors( n2, t );

+			test = tmp2.dot( tan2[ v ] );

+			w = ( test < 0.0 ) ? -1.0 : 1.0;

+

+			tangents[ v * 4 ] 	  = tmp.x;

+			tangents[ v * 4 + 1 ] = tmp.y;

+			tangents[ v * 4 + 2 ] = tmp.z;

+			tangents[ v * 4 + 3 ] = w;

+

+		}

+

+		for ( j = 0, jl = offsets.length; j < jl; ++ j ) {

+

+			var start = offsets[ j ].start;

+			var count = offsets[ j ].count;

+			var index = offsets[ j ].index;

+

+			for ( i = start, il = start + count; i < il; i += 3 ) {

+

+				iA = index + indices[ i ];

+				iB = index + indices[ i + 1 ];

+				iC = index + indices[ i + 2 ];

+

+				handleVertex( iA );

+				handleVertex( iB );

+				handleVertex( iC );

+

+			}

+

+		}

+

+		this.hasTangents = true;

+		this.tangentsNeedUpdate = true;

+

+	},

+

+	dispose: function () {

+

+		this.dispatchEvent( { type: 'dispose' } );

+

+	}

+

+};

+

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author mikael emtinger / http://gomo.se/

+ */

+

+THREE.Camera = function () {

+

+	THREE.Object3D.call( this );

+

+	this.matrixWorldInverse = new THREE.Matrix4();

+

+	this.projectionMatrix = new THREE.Matrix4();

+	this.projectionMatrixInverse = new THREE.Matrix4();

+

+};

+

+THREE.Camera.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Camera.prototype.lookAt = function ( vector ) {

+

+	// TODO: Add hierarchy support.

+

+	this.matrix.lookAt( this.position, vector, this.up );

+

+	if ( this.rotationAutoUpdate === true ) {

+

+		if ( this.useQuaternion === false )  {

+

+			this.rotation.setEulerFromRotationMatrix( this.matrix, this.eulerOrder );

+

+		} else {

+

+			this.quaternion.copy( this.matrix.decompose()[ 1 ] );

+

+		}

+

+	}

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.OrthographicCamera = function ( left, right, top, bottom, near, far ) {

+

+	THREE.Camera.call( this );

+

+	this.left = left;

+	this.right = right;

+	this.top = top;

+	this.bottom = bottom;

+

+	this.near = ( near !== undefined ) ? near : 0.1;

+	this.far = ( far !== undefined ) ? far : 2000;

+

+	this.updateProjectionMatrix();

+

+};

+

+THREE.OrthographicCamera.prototype = Object.create( THREE.Camera.prototype );

+

+THREE.OrthographicCamera.prototype.updateProjectionMatrix = function () {

+

+	this.projectionMatrix.makeOrthographic( this.left, this.right, this.top, this.bottom, this.near, this.far );

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author greggman / http://games.greggman.com/

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ */

+

+THREE.PerspectiveCamera = function ( fov, aspect, near, far ) {

+

+	THREE.Camera.call( this );

+

+	this.fov = fov !== undefined ? fov : 50;

+	this.aspect = aspect !== undefined ? aspect : 1;

+	this.near = near !== undefined ? near : 0.1;

+	this.far = far !== undefined ? far : 2000;

+

+	this.updateProjectionMatrix();

+

+};

+

+THREE.PerspectiveCamera.prototype = Object.create( THREE.Camera.prototype );

+

+

+/**

+ * Uses Focal Length (in mm) to estimate and set FOV

+ * 35mm (fullframe) camera is used if frame size is not specified;

+ * Formula based on http://www.bobatkins.com/photography/technical/field_of_view.html

+ */

+

+THREE.PerspectiveCamera.prototype.setLens = function ( focalLength, frameHeight ) {

+

+	if ( frameHeight === undefined ) frameHeight = 24;

+

+	this.fov = 2 * THREE.Math.radToDeg( Math.atan( frameHeight / ( focalLength * 2 ) ) );

+	this.updateProjectionMatrix();

+

+}

+

+

+/**

+ * Sets an offset in a larger frustum. This is useful for multi-window or

+ * multi-monitor/multi-machine setups.

+ *

+ * For example, if you have 3x2 monitors and each monitor is 1920x1080 and

+ * the monitors are in grid like this

+ *

+ *   +---+---+---+

+ *   | A | B | C |

+ *   +---+---+---+

+ *   | D | E | F |

+ *   +---+---+---+

+ *

+ * then for each monitor you would call it like this

+ *

+ *   var w = 1920;

+ *   var h = 1080;

+ *   var fullWidth = w * 3;

+ *   var fullHeight = h * 2;

+ *

+ *   --A--

+ *   camera.setOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );

+ *   --B--

+ *   camera.setOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );

+ *   --C--

+ *   camera.setOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );

+ *   --D--

+ *   camera.setOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );

+ *   --E--

+ *   camera.setOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );

+ *   --F--

+ *   camera.setOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );

+ *

+ *   Note there is no reason monitors have to be the same size or in a grid.

+ */

+

+THREE.PerspectiveCamera.prototype.setViewOffset = function ( fullWidth, fullHeight, x, y, width, height ) {

+

+	this.fullWidth = fullWidth;

+	this.fullHeight = fullHeight;

+	this.x = x;

+	this.y = y;

+	this.width = width;

+	this.height = height;

+

+	this.updateProjectionMatrix();

+

+};

+

+

+THREE.PerspectiveCamera.prototype.updateProjectionMatrix = function () {

+

+	if ( this.fullWidth ) {

+

+		var aspect = this.fullWidth / this.fullHeight;

+		var top = Math.tan( THREE.Math.degToRad( this.fov * 0.5 ) ) * this.near;

+		var bottom = -top;

+		var left = aspect * bottom;

+		var right = aspect * top;

+		var width = Math.abs( right - left );

+		var height = Math.abs( top - bottom );

+

+		this.projectionMatrix.makeFrustum(

+			left + this.x * width / this.fullWidth,

+			left + ( this.x + this.width ) * width / this.fullWidth,

+			top - ( this.y + this.height ) * height / this.fullHeight,

+			top - this.y * height / this.fullHeight,

+			this.near,

+			this.far

+		);

+

+	} else {

+

+		this.projectionMatrix.makePerspective( this.fov, this.aspect, this.near, this.far );

+

+	}

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+ 

+THREE.Light = function ( hex ) {

+

+	THREE.Object3D.call( this );

+

+	this.color = new THREE.Color( hex );

+

+};

+

+THREE.Light.prototype = Object.create( THREE.Object3D.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.AmbientLight = function ( hex ) {

+

+	THREE.Light.call( this, hex );

+

+};

+

+THREE.AmbientLight.prototype = Object.create( THREE.Light.prototype );

+/**

+ * @author MPanknin / http://www.redplant.de/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.AreaLight = function ( hex, intensity ) {

+

+	THREE.Light.call( this, hex );

+

+	this.normal = new THREE.Vector3( 0, -1, 0 );

+	this.right = new THREE.Vector3( 1, 0, 0 );

+

+	this.intensity = ( intensity !== undefined ) ? intensity : 1;

+

+	this.width = 1.0;

+	this.height = 1.0;

+

+	this.constantAttenuation = 1.5;

+	this.linearAttenuation = 0.5;

+	this.quadraticAttenuation = 0.1;

+

+};

+

+THREE.AreaLight.prototype = Object.create( THREE.Light.prototype );

+

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.DirectionalLight = function ( hex, intensity ) {

+

+	THREE.Light.call( this, hex );

+

+	this.position = new THREE.Vector3( 0, 1, 0 );

+	this.target = new THREE.Object3D();

+

+	this.intensity = ( intensity !== undefined ) ? intensity : 1;

+

+	this.castShadow = false;

+	this.onlyShadow = false;

+

+	//

+

+	this.shadowCameraNear = 50;

+	this.shadowCameraFar = 5000;

+

+	this.shadowCameraLeft = -500;

+	this.shadowCameraRight = 500;

+	this.shadowCameraTop = 500;

+	this.shadowCameraBottom = -500;

+

+	this.shadowCameraVisible = false;

+

+	this.shadowBias = 0;

+	this.shadowDarkness = 0.5;

+

+	this.shadowMapWidth = 512;

+	this.shadowMapHeight = 512;

+

+	//

+

+	this.shadowCascade = false;

+

+	this.shadowCascadeOffset = new THREE.Vector3( 0, 0, -1000 );

+	this.shadowCascadeCount = 2;

+

+	this.shadowCascadeBias = [ 0, 0, 0 ];

+	this.shadowCascadeWidth = [ 512, 512, 512 ];

+	this.shadowCascadeHeight = [ 512, 512, 512 ];

+

+	this.shadowCascadeNearZ = [ -1.000, 0.990, 0.998 ];

+	this.shadowCascadeFarZ  = [  0.990, 0.998, 1.000 ];

+

+	this.shadowCascadeArray = [];

+

+	//

+

+	this.shadowMap = null;

+	this.shadowMapSize = null;

+	this.shadowCamera = null;

+	this.shadowMatrix = null;

+

+};

+

+THREE.DirectionalLight.prototype = Object.create( THREE.Light.prototype );

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.HemisphereLight = function ( skyColorHex, groundColorHex, intensity ) {

+

+	THREE.Light.call( this, skyColorHex );

+

+	this.groundColor = new THREE.Color( groundColorHex );

+

+	this.position = new THREE.Vector3( 0, 100, 0 );

+

+	this.intensity = ( intensity !== undefined ) ? intensity : 1;

+

+};

+

+THREE.HemisphereLight.prototype = Object.create( THREE.Light.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.PointLight = function ( hex, intensity, distance ) {

+

+	THREE.Light.call( this, hex );

+

+	this.position = new THREE.Vector3( 0, 0, 0 );

+	this.intensity = ( intensity !== undefined ) ? intensity : 1;

+	this.distance = ( distance !== undefined ) ? distance : 0;

+

+};

+

+THREE.PointLight.prototype = Object.create( THREE.Light.prototype );

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.SpotLight = function ( hex, intensity, distance, angle, exponent ) {

+

+	THREE.Light.call( this, hex );

+

+	this.position = new THREE.Vector3( 0, 1, 0 );

+	this.target = new THREE.Object3D();

+

+	this.intensity = ( intensity !== undefined ) ? intensity : 1;

+	this.distance = ( distance !== undefined ) ? distance : 0;

+	this.angle = ( angle !== undefined ) ? angle : Math.PI / 2;

+	this.exponent = ( exponent !== undefined ) ? exponent : 10;

+

+	this.castShadow = false;

+	this.onlyShadow = false;

+

+	//

+

+	this.shadowCameraNear = 50;

+	this.shadowCameraFar = 5000;

+	this.shadowCameraFov = 50;

+

+	this.shadowCameraVisible = false;

+

+	this.shadowBias = 0;

+	this.shadowDarkness = 0.5;

+

+	this.shadowMapWidth = 512;

+	this.shadowMapHeight = 512;

+

+	//

+

+	this.shadowMap = null;

+	this.shadowMapSize = null;

+	this.shadowCamera = null;

+	this.shadowMatrix = null;

+

+};

+

+THREE.SpotLight.prototype = Object.create( THREE.Light.prototype );

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Loader = function ( showStatus ) {

+

+	this.showStatus = showStatus;

+	this.statusDomElement = showStatus ? THREE.Loader.prototype.addStatusElement() : null;

+

+	this.onLoadStart = function () {};

+	this.onLoadProgress = function () {};

+	this.onLoadComplete = function () {};

+

+};

+

+THREE.Loader.prototype = {

+

+	constructor: THREE.Loader,

+

+	crossOrigin: 'anonymous',

+

+	addStatusElement: function () {

+

+		var e = document.createElement( "div" );

+

+		e.style.position = "absolute";

+		e.style.right = "0px";

+		e.style.top = "0px";

+		e.style.fontSize = "0.8em";

+		e.style.textAlign = "left";

+		e.style.background = "rgba(0,0,0,0.25)";

+		e.style.color = "#fff";

+		e.style.width = "120px";

+		e.style.padding = "0.5em 0.5em 0.5em 0.5em";

+		e.style.zIndex = 1000;

+

+		e.innerHTML = "Loading ...";

+

+		return e;

+

+	},

+

+	updateProgress: function ( progress ) {

+

+		var message = "Loaded ";

+

+		if ( progress.total ) {

+

+			message += ( 100 * progress.loaded / progress.total ).toFixed(0) + "%";

+

+

+		} else {

+

+			message += ( progress.loaded / 1000 ).toFixed(2) + " KB";

+

+		}

+

+		this.statusDomElement.innerHTML = message;

+

+	},

+

+	extractUrlBase: function ( url ) {

+

+		var parts = url.split( '/' );

+		parts.pop();

+		return ( parts.length < 1 ? '.' : parts.join( '/' ) ) + '/';

+

+	},

+

+	initMaterials: function ( materials, texturePath ) {

+

+		var array = [];

+

+		for ( var i = 0; i < materials.length; ++ i ) {

+

+			array[ i ] = THREE.Loader.prototype.createMaterial( materials[ i ], texturePath );

+

+		}

+

+		return array;

+

+	},

+

+	needsTangents: function ( materials ) {

+

+		for( var i = 0, il = materials.length; i < il; i ++ ) {

+

+			var m = materials[ i ];

+

+			if ( m instanceof THREE.ShaderMaterial ) return true;

+

+		}

+

+		return false;

+

+	},

+

+	createMaterial: function ( m, texturePath ) {

+

+		var _this = this;

+

+		function is_pow2( n ) {

+

+			var l = Math.log( n ) / Math.LN2;

+			return Math.floor( l ) == l;

+

+		}

+

+		function nearest_pow2( n ) {

+

+			var l = Math.log( n ) / Math.LN2;

+			return Math.pow( 2, Math.round(  l ) );

+

+		}

+

+		function load_image( where, url ) {

+

+			var image = new Image();

+

+			image.onload = function () {

+

+				if ( !is_pow2( this.width ) || !is_pow2( this.height ) ) {

+

+					var width = nearest_pow2( this.width );

+					var height = nearest_pow2( this.height );

+

+					where.image.width = width;

+					where.image.height = height;

+					where.image.getContext( '2d' ).drawImage( this, 0, 0, width, height );

+

+				} else {

+

+					where.image = this;

+

+				}

+

+				where.needsUpdate = true;

+

+			};

+

+			image.crossOrigin = _this.crossOrigin;

+			image.src = url;

+

+		}

+

+		function create_texture( where, name, sourceFile, repeat, offset, wrap, anisotropy ) {

+

+			var isCompressed = /\.dds$/i.test( sourceFile );

+			var fullPath = texturePath + "/" + sourceFile;

+

+			if ( isCompressed ) {

+

+				var texture = THREE.ImageUtils.loadCompressedTexture( fullPath );

+

+				where[ name ] = texture;

+

+			} else {

+

+				var texture = document.createElement( 'canvas' );

+

+				where[ name ] = new THREE.Texture( texture );

+

+			}

+

+			where[ name ].sourceFile = sourceFile;

+

+			if( repeat ) {

+

+				where[ name ].repeat.set( repeat[ 0 ], repeat[ 1 ] );

+

+				if ( repeat[ 0 ] !== 1 ) where[ name ].wrapS = THREE.RepeatWrapping;

+				if ( repeat[ 1 ] !== 1 ) where[ name ].wrapT = THREE.RepeatWrapping;

+

+			}

+

+			if ( offset ) {

+

+				where[ name ].offset.set( offset[ 0 ], offset[ 1 ] );

+

+			}

+

+			if ( wrap ) {

+

+				var wrapMap = {

+					"repeat": THREE.RepeatWrapping,

+					"mirror": THREE.MirroredRepeatWrapping

+				}

+

+				if ( wrapMap[ wrap[ 0 ] ] !== undefined ) where[ name ].wrapS = wrapMap[ wrap[ 0 ] ];

+				if ( wrapMap[ wrap[ 1 ] ] !== undefined ) where[ name ].wrapT = wrapMap[ wrap[ 1 ] ];

+

+			}

+

+			if ( anisotropy ) {

+

+				where[ name ].anisotropy = anisotropy;

+

+			}

+

+			if ( ! isCompressed ) {

+

+				load_image( where[ name ], fullPath );

+

+			}

+

+		}

+

+		function rgb2hex( rgb ) {

+

+			return ( rgb[ 0 ] * 255 << 16 ) + ( rgb[ 1 ] * 255 << 8 ) + rgb[ 2 ] * 255;

+

+		}

+

+		// defaults

+

+		var mtype = "MeshLambertMaterial";

+		var mpars = { color: 0xeeeeee, opacity: 1.0, map: null, lightMap: null, normalMap: null, bumpMap: null, wireframe: false };

+

+		// parameters from model file

+

+		if ( m.shading ) {

+

+			var shading = m.shading.toLowerCase();

+

+			if ( shading === "phong" ) mtype = "MeshPhongMaterial";

+			else if ( shading === "basic" ) mtype = "MeshBasicMaterial";

+

+		}

+

+		if ( m.blending !== undefined && THREE[ m.blending ] !== undefined ) {

+

+			mpars.blending = THREE[ m.blending ];

+

+		}

+

+		if ( m.transparent !== undefined || m.opacity < 1.0 ) {

+

+			mpars.transparent = m.transparent;

+

+		}

+

+		if ( m.depthTest !== undefined ) {

+

+			mpars.depthTest = m.depthTest;

+

+		}

+

+		if ( m.depthWrite !== undefined ) {

+

+			mpars.depthWrite = m.depthWrite;

+

+		}

+

+		if ( m.visible !== undefined ) {

+

+			mpars.visible = m.visible;

+

+		}

+

+		if ( m.flipSided !== undefined ) {

+

+			mpars.side = THREE.BackSide;

+

+		}

+

+		if ( m.doubleSided !== undefined ) {

+

+			mpars.side = THREE.DoubleSide;

+

+		}

+

+		if ( m.wireframe !== undefined ) {

+

+			mpars.wireframe = m.wireframe;

+

+		}

+

+		if ( m.vertexColors !== undefined ) {

+

+			if ( m.vertexColors === "face" ) {

+

+				mpars.vertexColors = THREE.FaceColors;

+

+			} else if ( m.vertexColors ) {

+

+				mpars.vertexColors = THREE.VertexColors;

+

+			}

+

+		}

+

+		// colors

+

+		if ( m.colorDiffuse ) {

+

+			mpars.color = rgb2hex( m.colorDiffuse );

+

+		} else if ( m.DbgColor ) {

+

+			mpars.color = m.DbgColor;

+

+		}

+

+		if ( m.colorSpecular ) {

+

+			mpars.specular = rgb2hex( m.colorSpecular );

+

+		}

+

+		if ( m.colorAmbient ) {

+

+			mpars.ambient = rgb2hex( m.colorAmbient );

+

+		}

+

+		// modifiers

+

+		if ( m.transparency ) {

+

+			mpars.opacity = m.transparency;

+

+		}

+

+		if ( m.specularCoef ) {

+

+			mpars.shininess = m.specularCoef;

+

+		}

+

+		// textures

+

+		if ( m.mapDiffuse && texturePath ) {

+

+			create_texture( mpars, "map", m.mapDiffuse, m.mapDiffuseRepeat, m.mapDiffuseOffset, m.mapDiffuseWrap, m.mapDiffuseAnisotropy );

+

+		}

+

+		if ( m.mapLight && texturePath ) {

+

+			create_texture( mpars, "lightMap", m.mapLight, m.mapLightRepeat, m.mapLightOffset, m.mapLightWrap, m.mapLightAnisotropy );

+

+		}

+

+		if ( m.mapBump && texturePath ) {

+

+			create_texture( mpars, "bumpMap", m.mapBump, m.mapBumpRepeat, m.mapBumpOffset, m.mapBumpWrap, m.mapBumpAnisotropy );

+

+		}

+

+		if ( m.mapNormal && texturePath ) {

+

+			create_texture( mpars, "normalMap", m.mapNormal, m.mapNormalRepeat, m.mapNormalOffset, m.mapNormalWrap, m.mapNormalAnisotropy );

+

+		}

+

+		if ( m.mapSpecular && texturePath ) {

+

+			create_texture( mpars, "specularMap", m.mapSpecular, m.mapSpecularRepeat, m.mapSpecularOffset, m.mapSpecularWrap, m.mapSpecularAnisotropy );

+

+		}

+

+		//

+

+		if ( m.mapBumpScale ) {

+

+			mpars.bumpScale = m.mapBumpScale;

+

+		}

+

+		// special case for normal mapped material

+

+		if ( m.mapNormal ) {

+

+			var shader = THREE.ShaderLib[ "normalmap" ];

+			var uniforms = THREE.UniformsUtils.clone( shader.uniforms );

+

+			uniforms[ "tNormal" ].value = mpars.normalMap;

+

+			if ( m.mapNormalFactor ) {

+

+				uniforms[ "uNormalScale" ].value.set( m.mapNormalFactor, m.mapNormalFactor );

+

+			}

+

+			if ( mpars.map ) {

+

+				uniforms[ "tDiffuse" ].value = mpars.map;

+				uniforms[ "enableDiffuse" ].value = true;

+

+			}

+

+			if ( mpars.specularMap ) {

+

+				uniforms[ "tSpecular" ].value = mpars.specularMap;

+				uniforms[ "enableSpecular" ].value = true;

+

+			}

+

+			if ( mpars.lightMap ) {

+

+				uniforms[ "tAO" ].value = mpars.lightMap;

+				uniforms[ "enableAO" ].value = true;

+

+			}

+

+			// for the moment don't handle displacement texture

+

+			uniforms[ "uDiffuseColor" ].value.setHex( mpars.color );

+			uniforms[ "uSpecularColor" ].value.setHex( mpars.specular );

+			uniforms[ "uAmbientColor" ].value.setHex( mpars.ambient );

+

+			uniforms[ "uShininess" ].value = mpars.shininess;

+

+			if ( mpars.opacity !== undefined ) {

+

+				uniforms[ "uOpacity" ].value = mpars.opacity;

+

+			}

+

+			var parameters = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShader, uniforms: uniforms, lights: true, fog: true };

+			var material = new THREE.ShaderMaterial( parameters );

+

+			if ( mpars.transparent ) {

+

+				material.transparent = true;

+

+			}

+

+		} else {

+

+			var material = new THREE[ mtype ]( mpars );

+

+		}

+

+		if ( m.DbgName !== undefined ) material.name = m.DbgName;

+

+		return material;

+

+	}

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.ImageLoader = function () {

+

+	THREE.EventDispatcher.call( this );

+

+	this.crossOrigin = null;

+

+};

+

+THREE.ImageLoader.prototype = {

+

+	constructor: THREE.ImageLoader,

+

+	load: function ( url, image ) {

+

+		var scope = this;

+

+		if ( image === undefined ) image = new Image();

+

+		image.addEventListener( 'load', function () {

+

+			scope.dispatchEvent( { type: 'load', content: image } );

+

+		}, false );

+

+		image.addEventListener( 'error', function () {

+

+			scope.dispatchEvent( { type: 'error', message: 'Couldn\'t load URL [' + url + ']' } );

+

+		}, false );

+

+		if ( scope.crossOrigin ) image.crossOrigin = scope.crossOrigin;

+

+		image.src = url;

+

+	}

+

+}

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.JSONLoader = function ( showStatus ) {

+

+	THREE.Loader.call( this, showStatus );

+

+	this.withCredentials = false;

+

+};

+

+THREE.JSONLoader.prototype = Object.create( THREE.Loader.prototype );

+

+THREE.JSONLoader.prototype.load = function ( url, callback, texturePath ) {

+

+	var scope = this;

+

+	// todo: unify load API to for easier SceneLoader use

+

+	texturePath = texturePath && ( typeof texturePath === "string" ) ? texturePath : this.extractUrlBase( url );

+

+	this.onLoadStart();

+	this.loadAjaxJSON( this, url, callback, texturePath );

+

+};

+

+THREE.JSONLoader.prototype.loadAjaxJSON = function ( context, url, callback, texturePath, callbackProgress ) {

+

+	var xhr = new XMLHttpRequest();

+

+	var length = 0;

+

+	xhr.onreadystatechange = function () {

+

+		if ( xhr.readyState === xhr.DONE ) {

+

+			if ( xhr.status === 200 || xhr.status === 0 ) {

+

+				if ( xhr.responseText ) {

+

+					var json = JSON.parse( xhr.responseText );

+					context.createModel( json, callback, texturePath );

+

+				} else {

+

+					console.warn( "THREE.JSONLoader: [" + url + "] seems to be unreachable or file there is empty" );

+

+				}

+

+				// in context of more complex asset initialization

+				// do not block on single failed file

+				// maybe should go even one more level up

+

+				context.onLoadComplete();

+

+			} else {

+

+				console.error( "THREE.JSONLoader: Couldn't load [" + url + "] [" + xhr.status + "]" );

+

+			}

+

+		} else if ( xhr.readyState === xhr.LOADING ) {

+

+			if ( callbackProgress ) {

+

+				if ( length === 0 ) {

+

+					length = xhr.getResponseHeader( "Content-Length" );

+

+				}

+

+				callbackProgress( { total: length, loaded: xhr.responseText.length } );

+

+			}

+

+		} else if ( xhr.readyState === xhr.HEADERS_RECEIVED ) {

+

+			length = xhr.getResponseHeader( "Content-Length" );

+

+		}

+

+	};

+

+	xhr.open( "GET", url, true );

+	xhr.withCredentials = this.withCredentials;

+	xhr.send( null );

+

+};

+

+THREE.JSONLoader.prototype.createModel = function ( json, callback, texturePath ) {

+

+	var scope = this,

+	geometry = new THREE.Geometry(),

+	scale = ( json.scale !== undefined ) ? 1.0 / json.scale : 1.0;

+

+	parseModel( scale );

+

+	parseSkin();

+	parseMorphing( scale );

+

+	geometry.computeCentroids();

+	geometry.computeFaceNormals();

+

+	function parseModel( scale ) {

+

+		function isBitSet( value, position ) {

+

+			return value & ( 1 << position );

+

+		}

+

+		var i, j, fi,

+

+		offset, zLength, nVertices,

+

+		colorIndex, normalIndex, uvIndex, materialIndex,

+

+		type,

+		isQuad,

+		hasMaterial,

+		hasFaceUv, hasFaceVertexUv,

+		hasFaceNormal, hasFaceVertexNormal,

+		hasFaceColor, hasFaceVertexColor,

+

+		vertex, face, color, normal,

+

+		uvLayer, uvs, u, v,

+

+		faces = json.faces,

+		vertices = json.vertices,

+		normals = json.normals,

+		colors = json.colors,

+

+		nUvLayers = 0;

+

+		// disregard empty arrays

+

+		for ( i = 0; i < json.uvs.length; i++ ) {

+

+			if ( json.uvs[ i ].length ) nUvLayers ++;

+

+		}

+

+		for ( i = 0; i < nUvLayers; i++ ) {

+

+			geometry.faceUvs[ i ] = [];

+			geometry.faceVertexUvs[ i ] = [];

+

+		}

+

+		offset = 0;

+		zLength = vertices.length;

+

+		while ( offset < zLength ) {

+

+			vertex = new THREE.Vector3();

+

+			vertex.x = vertices[ offset ++ ] * scale;

+			vertex.y = vertices[ offset ++ ] * scale;

+			vertex.z = vertices[ offset ++ ] * scale;

+

+			geometry.vertices.push( vertex );

+

+		}

+

+		offset = 0;

+		zLength = faces.length;

+

+		while ( offset < zLength ) {

+

+			type = faces[ offset ++ ];

+

+

+			isQuad          	= isBitSet( type, 0 );

+			hasMaterial         = isBitSet( type, 1 );

+			hasFaceUv           = isBitSet( type, 2 );

+			hasFaceVertexUv     = isBitSet( type, 3 );

+			hasFaceNormal       = isBitSet( type, 4 );

+			hasFaceVertexNormal = isBitSet( type, 5 );

+			hasFaceColor	    = isBitSet( type, 6 );

+			hasFaceVertexColor  = isBitSet( type, 7 );

+

+			//console.log("type", type, "bits", isQuad, hasMaterial, hasFaceUv, hasFaceVertexUv, hasFaceNormal, hasFaceVertexNormal, hasFaceColor, hasFaceVertexColor);

+

+			if ( isQuad ) {

+

+				face = new THREE.Face4();

+

+				face.a = faces[ offset ++ ];

+				face.b = faces[ offset ++ ];

+				face.c = faces[ offset ++ ];

+				face.d = faces[ offset ++ ];

+

+				nVertices = 4;

+

+			} else {

+

+				face = new THREE.Face3();

+

+				face.a = faces[ offset ++ ];

+				face.b = faces[ offset ++ ];

+				face.c = faces[ offset ++ ];

+

+				nVertices = 3;

+

+			}

+

+			if ( hasMaterial ) {

+

+				materialIndex = faces[ offset ++ ];

+				face.materialIndex = materialIndex;

+

+			}

+

+			// to get face <=> uv index correspondence

+

+			fi = geometry.faces.length;

+

+			if ( hasFaceUv ) {

+

+				for ( i = 0; i < nUvLayers; i++ ) {

+

+					uvLayer = json.uvs[ i ];

+

+					uvIndex = faces[ offset ++ ];

+

+					u = uvLayer[ uvIndex * 2 ];

+					v = uvLayer[ uvIndex * 2 + 1 ];

+

+					geometry.faceUvs[ i ][ fi ] = new THREE.Vector2( u, v );

+

+				}

+

+			}

+

+			if ( hasFaceVertexUv ) {

+

+				for ( i = 0; i < nUvLayers; i++ ) {

+

+					uvLayer = json.uvs[ i ];

+

+					uvs = [];

+

+					for ( j = 0; j < nVertices; j ++ ) {

+

+						uvIndex = faces[ offset ++ ];

+

+						u = uvLayer[ uvIndex * 2 ];

+						v = uvLayer[ uvIndex * 2 + 1 ];

+

+						uvs[ j ] = new THREE.Vector2( u, v );

+

+					}

+

+					geometry.faceVertexUvs[ i ][ fi ] = uvs;

+

+				}

+

+			}

+

+			if ( hasFaceNormal ) {

+

+				normalIndex = faces[ offset ++ ] * 3;

+

+				normal = new THREE.Vector3();

+

+				normal.x = normals[ normalIndex ++ ];

+				normal.y = normals[ normalIndex ++ ];

+				normal.z = normals[ normalIndex ];

+

+				face.normal = normal;

+

+			}

+

+			if ( hasFaceVertexNormal ) {

+

+				for ( i = 0; i < nVertices; i++ ) {

+

+					normalIndex = faces[ offset ++ ] * 3;

+

+					normal = new THREE.Vector3();

+

+					normal.x = normals[ normalIndex ++ ];

+					normal.y = normals[ normalIndex ++ ];

+					normal.z = normals[ normalIndex ];

+

+					face.vertexNormals.push( normal );

+

+				}

+

+			}

+

+

+			if ( hasFaceColor ) {

+

+				colorIndex = faces[ offset ++ ];

+

+				color = new THREE.Color( colors[ colorIndex ] );

+				face.color = color;

+

+			}

+

+

+			if ( hasFaceVertexColor ) {

+

+				for ( i = 0; i < nVertices; i++ ) {

+

+					colorIndex = faces[ offset ++ ];

+

+					color = new THREE.Color( colors[ colorIndex ] );

+					face.vertexColors.push( color );

+

+				}

+

+			}

+

+			geometry.faces.push( face );

+

+		}

+

+	};

+

+	function parseSkin() {

+

+		var i, l, x, y, z, w, a, b, c, d;

+

+		if ( json.skinWeights ) {

+

+			for ( i = 0, l = json.skinWeights.length; i < l; i += 2 ) {

+

+				x = json.skinWeights[ i     ];

+				y = json.skinWeights[ i + 1 ];

+				z = 0;

+				w = 0;

+

+				geometry.skinWeights.push( new THREE.Vector4( x, y, z, w ) );

+

+			}

+

+		}

+

+		if ( json.skinIndices ) {

+

+			for ( i = 0, l = json.skinIndices.length; i < l; i += 2 ) {

+

+				a = json.skinIndices[ i     ];

+				b = json.skinIndices[ i + 1 ];

+				c = 0;

+				d = 0;

+

+				geometry.skinIndices.push( new THREE.Vector4( a, b, c, d ) );

+

+			}

+

+		}

+

+		geometry.bones = json.bones;

+		geometry.animation = json.animation;

+

+	};

+

+	function parseMorphing( scale ) {

+

+		if ( json.morphTargets !== undefined ) {

+

+			var i, l, v, vl, dstVertices, srcVertices;

+

+			for ( i = 0, l = json.morphTargets.length; i < l; i ++ ) {

+

+				geometry.morphTargets[ i ] = {};

+				geometry.morphTargets[ i ].name = json.morphTargets[ i ].name;

+				geometry.morphTargets[ i ].vertices = [];

+

+				dstVertices = geometry.morphTargets[ i ].vertices;

+				srcVertices = json.morphTargets [ i ].vertices;

+

+				for( v = 0, vl = srcVertices.length; v < vl; v += 3 ) {

+

+					var vertex = new THREE.Vector3();

+					vertex.x = srcVertices[ v ] * scale;

+					vertex.y = srcVertices[ v + 1 ] * scale;

+					vertex.z = srcVertices[ v + 2 ] * scale;

+

+					dstVertices.push( vertex );

+

+				}

+

+			}

+

+		}

+

+		if ( json.morphColors !== undefined ) {

+

+			var i, l, c, cl, dstColors, srcColors, color;

+

+			for ( i = 0, l = json.morphColors.length; i < l; i++ ) {

+

+				geometry.morphColors[ i ] = {};

+				geometry.morphColors[ i ].name = json.morphColors[ i ].name;

+				geometry.morphColors[ i ].colors = [];

+

+				dstColors = geometry.morphColors[ i ].colors;

+				srcColors = json.morphColors [ i ].colors;

+

+				for ( c = 0, cl = srcColors.length; c < cl; c += 3 ) {

+

+					color = new THREE.Color( 0xffaa00 );

+					color.setRGB( srcColors[ c ], srcColors[ c + 1 ], srcColors[ c + 2 ] );

+					dstColors.push( color );

+

+				}

+

+			}

+

+		}

+

+	};

+

+	var materials = this.initMaterials( json.materials, texturePath );

+

+	if ( this.needsTangents( materials ) ) geometry.computeTangents();

+

+	callback( geometry, materials );

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.LoadingMonitor = function () {

+

+	THREE.EventDispatcher.call( this );

+

+	var scope = this;

+

+	var loaded = 0;

+	var total = 0;

+

+	var onLoad = function ( event ) {

+

+		loaded ++;

+

+		scope.dispatchEvent( { type: 'progress', loaded: loaded, total: total } );

+

+		if ( loaded === total ) {

+

+			scope.dispatchEvent( { type: 'load' } );

+

+		}

+

+	};

+

+	this.add = function ( loader ) {

+

+		total ++;

+

+		loader.addEventListener( 'load', onLoad, false );

+

+	};

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.SceneLoader = function () {

+

+	this.onLoadStart = function () {};

+	this.onLoadProgress = function() {};

+	this.onLoadComplete = function () {};

+

+	this.callbackSync = function () {};

+	this.callbackProgress = function () {};

+

+	this.geometryHandlerMap = {};

+	this.hierarchyHandlerMap = {};

+

+	this.addGeometryHandler( "ascii", THREE.JSONLoader );

+

+};

+

+THREE.SceneLoader.prototype.constructor = THREE.SceneLoader;

+

+THREE.SceneLoader.prototype.load = function ( url, callbackFinished ) {

+

+	var scope = this;

+

+	var xhr = new XMLHttpRequest();

+

+	xhr.onreadystatechange = function () {

+

+		if ( xhr.readyState === 4 ) {

+

+			if ( xhr.status === 200 || xhr.status === 0 ) {

+

+				var json = JSON.parse( xhr.responseText );

+				scope.parse( json, callbackFinished, url );

+

+			} else {

+

+				console.error( "THREE.SceneLoader: Couldn't load [" + url + "] [" + xhr.status + "]" );

+

+			}

+

+		}

+

+	};

+

+	xhr.open( "GET", url, true );

+	xhr.send( null );

+

+};

+

+THREE.SceneLoader.prototype.addGeometryHandler = function ( typeID, loaderClass ) {

+

+	this.geometryHandlerMap[ typeID ] = { "loaderClass": loaderClass };

+

+};

+

+THREE.SceneLoader.prototype.addHierarchyHandler = function ( typeID, loaderClass ) {

+

+	this.hierarchyHandlerMap[ typeID ] = { "loaderClass": loaderClass };

+

+};

+

+THREE.SceneLoader.prototype.parse = function ( json, callbackFinished, url ) {

+

+	var scope = this;

+

+	var urlBase = THREE.Loader.prototype.extractUrlBase( url );

+

+	var geometry, material, camera, fog,

+		texture, images, color,

+		light, hex, intensity,

+		counter_models, counter_textures,

+		total_models, total_textures,

+		result;

+

+	var target_array = [];

+

+	var data = json;

+

+	// async geometry loaders

+

+	for ( var typeID in this.geometryHandlerMap ) {

+

+		var loaderClass = this.geometryHandlerMap[ typeID ][ "loaderClass" ];

+		this.geometryHandlerMap[ typeID ][ "loaderObject" ] = new loaderClass();

+

+	}

+

+	// async hierachy loaders

+

+	for ( var typeID in this.hierarchyHandlerMap ) {

+

+		var loaderClass = this.hierarchyHandlerMap[ typeID ][ "loaderClass" ];

+		this.hierarchyHandlerMap[ typeID ][ "loaderObject" ] = new loaderClass();

+

+	}

+

+	counter_models = 0;

+	counter_textures = 0;

+

+	result = {

+

+		scene: new THREE.Scene(),

+		geometries: {},

+		face_materials: {},

+		materials: {},

+		textures: {},

+		objects: {},

+		cameras: {},

+		lights: {},

+		fogs: {},

+		empties: {},

+		groups: {}

+

+	};

+

+	if ( data.transform ) {

+

+		var position = data.transform.position,

+			rotation = data.transform.rotation,

+			scale = data.transform.scale;

+

+		if ( position )

+			result.scene.position.set( position[ 0 ], position[ 1 ], position [ 2 ] );

+

+		if ( rotation )

+			result.scene.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation [ 2 ] );

+

+		if ( scale )

+			result.scene.scale.set( scale[ 0 ], scale[ 1 ], scale [ 2 ] );

+

+		if ( position || rotation || scale ) {

+

+			result.scene.updateMatrix();

+			result.scene.updateMatrixWorld();

+

+		}

+

+	}

+

+	function get_url( source_url, url_type ) {

+

+		if ( url_type == "relativeToHTML" ) {

+

+			return source_url;

+

+		} else {

+

+			return urlBase + "/" + source_url;

+

+		}

+

+	};

+

+	// toplevel loader function, delegates to handle_children

+

+	function handle_objects() {

+

+		handle_children( result.scene, data.objects );

+

+	}

+

+	// handle all the children from the loaded json and attach them to given parent

+

+	function handle_children( parent, children ) {

+

+		var mat, dst, pos, rot, scl, quat;

+

+		for ( var objID in children ) {

+

+			// check by id if child has already been handled,

+			// if not, create new object

+

+			if ( result.objects[ objID ] === undefined ) {

+

+				var objJSON = children[ objID ];

+

+				var object = null;

+

+				// meshes

+

+				if ( objJSON.type && ( objJSON.type in scope.hierarchyHandlerMap ) ) {

+

+					if ( objJSON.loading === undefined ) {

+

+						var reservedTypes = { "type": 1, "url": 1, "material": 1,

+											  "position": 1, "rotation": 1, "scale" : 1,

+											  "visible": 1, "children": 1, "properties": 1,

+											  "skin": 1, "morph": 1, "mirroredLoop": 1, "duration": 1 };

+

+						var loaderParameters = {};

+

+						for ( var parType in objJSON ) {

+

+							if ( ! ( parType in reservedTypes ) ) {

+

+								loaderParameters[ parType ] = objJSON[ parType ];

+

+							}

+

+						}

+

+						material = result.materials[ objJSON.material ];

+

+						objJSON.loading = true;

+

+						var loader = scope.hierarchyHandlerMap[ objJSON.type ][ "loaderObject" ];

+

+						// ColladaLoader

+

+						if ( loader.options ) {

+

+							loader.load( get_url( objJSON.url, data.urlBaseType ), create_callback_hierachy( objID, parent, material, objJSON ) );

+

+						// UTF8Loader

+						// OBJLoader

+

+						} else {

+

+							loader.load( get_url( objJSON.url, data.urlBaseType ), create_callback_hierachy( objID, parent, material, objJSON ), loaderParameters );

+

+						}

+

+					}

+

+				} else if ( objJSON.geometry !== undefined ) {

+

+					geometry = result.geometries[ objJSON.geometry ];

+

+					// geometry already loaded

+

+					if ( geometry ) {

+

+						var needsTangents = false;

+

+						material = result.materials[ objJSON.material ];

+						needsTangents = material instanceof THREE.ShaderMaterial;

+

+						pos = objJSON.position;

+						rot = objJSON.rotation;

+						scl = objJSON.scale;

+						mat = objJSON.matrix;

+						quat = objJSON.quaternion;

+

+						// use materials from the model file

+						// if there is no material specified in the object

+

+						if ( ! objJSON.material ) {

+

+							material = new THREE.MeshFaceMaterial( result.face_materials[ objJSON.geometry ] );

+

+						}

+

+						// use materials from the model file

+						// if there is just empty face material

+						// (must create new material as each model has its own face material)

+

+						if ( ( material instanceof THREE.MeshFaceMaterial ) && material.materials.length === 0 ) {

+

+							material = new THREE.MeshFaceMaterial( result.face_materials[ objJSON.geometry ] );

+

+						}

+

+						if ( material instanceof THREE.MeshFaceMaterial ) {

+

+							for ( var i = 0; i < material.materials.length; i ++ ) {

+

+								needsTangents = needsTangents || ( material.materials[ i ] instanceof THREE.ShaderMaterial );

+

+							}

+

+						}

+

+						if ( needsTangents ) {

+

+							geometry.computeTangents();

+

+						}

+

+						if ( objJSON.skin ) {

+

+							object = new THREE.SkinnedMesh( geometry, material );

+

+						} else if ( objJSON.morph ) {

+

+							object = new THREE.MorphAnimMesh( geometry, material );

+

+							if ( objJSON.duration !== undefined ) {

+

+								object.duration = objJSON.duration;

+

+							}

+

+							if ( objJSON.time !== undefined ) {

+

+								object.time = objJSON.time;

+

+							}

+

+							if ( objJSON.mirroredLoop !== undefined ) {

+

+								object.mirroredLoop = objJSON.mirroredLoop;

+

+							}

+

+							if ( material.morphNormals ) {

+

+								geometry.computeMorphNormals();

+

+							}

+

+						} else {

+

+							object = new THREE.Mesh( geometry, material );

+

+						}

+

+						object.name = objID;

+

+						if ( mat ) {

+

+							object.matrixAutoUpdate = false;

+							object.matrix.set(

+								mat[0],  mat[1],  mat[2],  mat[3],

+								mat[4],  mat[5],  mat[6],  mat[7],

+								mat[8],  mat[9],  mat[10], mat[11],

+								mat[12], mat[13], mat[14], mat[15]

+							);

+

+						} else {

+

+							object.position.set( pos[0], pos[1], pos[2] );

+

+							if ( quat ) {

+

+								object.quaternion.set( quat[0], quat[1], quat[2], quat[3] );

+								object.useQuaternion = true;

+

+							} else {

+

+								object.rotation.set( rot[0], rot[1], rot[2] );

+

+							}

+

+							object.scale.set( scl[0], scl[1], scl[2] );

+

+						}

+

+						object.visible = objJSON.visible;

+						object.castShadow = objJSON.castShadow;

+						object.receiveShadow = objJSON.receiveShadow;

+

+						parent.add( object );

+

+						result.objects[ objID ] = object;

+

+					}

+

+				// lights

+

+				} else if ( objJSON.type === "DirectionalLight" || objJSON.type === "PointLight" || objJSON.type === "AmbientLight" ) {

+

+					hex = ( objJSON.color !== undefined ) ? objJSON.color : 0xffffff;

+					intensity = ( objJSON.intensity !== undefined ) ? objJSON.intensity : 1;

+

+					if ( objJSON.type === "DirectionalLight" ) {

+

+						pos = objJSON.direction;

+

+						light = new THREE.DirectionalLight( hex, intensity );

+						light.position.set( pos[0], pos[1], pos[2] );

+

+						if ( objJSON.target ) {

+

+							target_array.push( { "object": light, "targetName" : objJSON.target } );

+

+							// kill existing default target

+							// otherwise it gets added to scene when parent gets added

+

+							light.target = null;

+

+						}

+

+					} else if ( objJSON.type === "PointLight" ) {

+

+						pos = objJSON.position;

+						dst = objJSON.distance;

+

+						light = new THREE.PointLight( hex, intensity, dst );

+						light.position.set( pos[0], pos[1], pos[2] );

+

+					} else if ( objJSON.type === "AmbientLight" ) {

+

+						light = new THREE.AmbientLight( hex );

+

+					}

+

+					parent.add( light );

+

+					light.name = objID;

+					result.lights[ objID ] = light;

+					result.objects[ objID ] = light;

+

+				// cameras

+

+				} else if ( objJSON.type === "PerspectiveCamera" || objJSON.type === "OrthographicCamera" ) {

+

+					if ( objJSON.type === "PerspectiveCamera" ) {

+

+						camera = new THREE.PerspectiveCamera( objJSON.fov, objJSON.aspect, objJSON.near, objJSON.far );

+

+					} else if ( objJSON.type === "OrthographicCamera" ) {

+

+						camera = new THREE.OrthographicCamera( objJSON.left, objJSON.right, objJSON.top, objJSON.bottom, objJSON.near, objJSON.far );

+

+					}

+

+					pos = objJSON.position;

+					camera.position.set( pos[0], pos[1], pos[2] );

+					parent.add( camera );

+

+					camera.name = objID;

+					result.cameras[ objID ] = camera;

+					result.objects[ objID ] = camera;

+

+				// pure Object3D

+

+				} else {

+

+					pos = objJSON.position;

+					rot = objJSON.rotation;

+					scl = objJSON.scale;

+					quat = objJSON.quaternion;

+

+					object = new THREE.Object3D();

+					object.name = objID;

+					object.position.set( pos[0], pos[1], pos[2] );

+

+					if ( quat ) {

+

+						object.quaternion.set( quat[0], quat[1], quat[2], quat[3] );

+						object.useQuaternion = true;

+

+					} else {

+

+						object.rotation.set( rot[0], rot[1], rot[2] );

+

+					}

+

+					object.scale.set( scl[0], scl[1], scl[2] );

+					object.visible = ( objJSON.visible !== undefined ) ? objJSON.visible : false;

+

+					parent.add( object );

+

+					result.objects[ objID ] = object;

+					result.empties[ objID ] = object;

+

+				}

+

+				if ( object ) {

+

+					if ( objJSON.properties !== undefined )  {

+

+						for ( var key in objJSON.properties ) {

+

+							var value = objJSON.properties[ key ];

+							object.properties[ key ] = value;

+

+						}

+

+					}

+

+					if ( objJSON.groups !== undefined ) {

+

+						for ( var i = 0; i < objJSON.groups.length; i ++ ) {

+

+							var groupID = objJSON.groups[ i ];

+

+							if ( result.groups[ groupID ] === undefined ) {

+

+								result.groups[ groupID ] = [];

+

+							}

+

+							result.groups[ groupID ].push( objID );

+

+						}

+

+					}

+

+					if ( objJSON.children !== undefined ) {

+

+						handle_children( object, objJSON.children );

+

+					}

+

+				}

+

+			}

+

+		}

+

+	};

+

+	function handle_mesh( geo, mat, id ) {

+

+		result.geometries[ id ] = geo;

+		result.face_materials[ id ] = mat;

+		handle_objects();

+

+	};

+

+	function handle_hierarchy( node, id, parent, material, obj ) {

+

+		var p = obj.position;

+		var r = obj.rotation;

+		var q = obj.quaternion;

+		var s = obj.scale;

+

+		node.position.set( p[0], p[1], p[2] );

+

+		if ( q ) {

+

+			node.quaternion.set( q[0], q[1], q[2], q[3] );

+			node.useQuaternion = true;

+

+		} else {

+

+			node.rotation.set( r[0], r[1], r[2] );

+

+		}

+

+		node.scale.set( s[0], s[1], s[2] );

+

+		// override children materials

+		// if object material was specified in JSON explicitly

+

+		if ( material ) {

+

+			node.traverse( function ( child )  {

+

+				child.material = material;

+

+			} );

+

+		}

+

+		// override children visibility

+		// with root node visibility as specified in JSON

+

+		var visible = ( obj.visible !== undefined ) ? obj.visible : true;

+

+		node.traverse( function ( child )  {

+

+			child.visible = visible;

+

+		} );

+

+		parent.add( node );

+

+		node.name = id;

+

+		result.objects[ id ] = node;

+		handle_objects();

+

+	};

+

+	function create_callback_geometry( id ) {

+

+		return function( geo, mat ) {

+

+			handle_mesh( geo, mat, id );

+

+			counter_models -= 1;

+

+			scope.onLoadComplete();

+

+			async_callback_gate();

+

+		}

+

+	};

+

+	function create_callback_hierachy( id, parent, material, obj ) {

+

+		return function( event ) {

+

+			var result;

+

+			// loaders which use EventDispatcher

+

+			if ( event.content ) {

+

+				result = event.content;

+

+			// ColladaLoader

+

+			} else if ( event.dae ) {

+

+				result = event.scene;

+

+

+			// UTF8Loader

+

+			} else {

+

+				result = event;

+

+			}

+

+			handle_hierarchy( result, id, parent, material, obj );

+

+			counter_models -= 1;

+

+			scope.onLoadComplete();

+

+			async_callback_gate();

+

+		}

+

+	};

+

+	function create_callback_embed( id ) {

+

+		return function( geo, mat ) {

+

+			result.geometries[ id ] = geo;

+			result.face_materials[ id ] = mat;

+

+		}

+

+	};

+

+	function async_callback_gate() {

+

+		var progress = {

+

+			totalModels : total_models,

+			totalTextures : total_textures,

+			loadedModels : total_models - counter_models,

+			loadedTextures : total_textures - counter_textures

+

+		};

+

+		scope.callbackProgress( progress, result );

+

+		scope.onLoadProgress();

+

+		if ( counter_models === 0 && counter_textures === 0 ) {

+

+			finalize();

+			callbackFinished( result );

+

+		}

+

+	};

+

+	function finalize() {

+

+		// take care of targets which could be asynchronously loaded objects

+

+		for ( var i = 0; i < target_array.length; i ++ ) {

+

+			var ta = target_array[ i ];

+

+			var target = result.objects[ ta.targetName ];

+

+			if ( target ) {

+

+				ta.object.target = target;

+

+			} else {

+

+				// if there was error and target of specified name doesn't exist in the scene file

+				// create instead dummy target

+				// (target must be added to scene explicitly as parent is already added)

+

+				ta.object.target = new THREE.Object3D();

+				result.scene.add( ta.object.target );

+

+			}

+

+			ta.object.target.properties.targetInverse = ta.object;

+

+		}

+

+	};

+

+	var callbackTexture = function ( count ) {

+

+		counter_textures -= count;

+		async_callback_gate();

+

+		scope.onLoadComplete();

+

+	};

+

+	// must use this instead of just directly calling callbackTexture

+	// because of closure in the calling context loop

+

+	var generateTextureCallback = function ( count ) {

+

+		return function() {

+

+			callbackTexture( count );

+

+		};

+

+	};

+

+	// first go synchronous elements

+

+	// fogs

+

+	var fogID, fogJSON;

+

+	for ( fogID in data.fogs ) {

+

+		fogJSON = data.fogs[ fogID ];

+

+		if ( fogJSON.type === "linear" ) {

+

+			fog = new THREE.Fog( 0x000000, fogJSON.near, fogJSON.far );

+

+		} else if ( fogJSON.type === "exp2" ) {

+

+			fog = new THREE.FogExp2( 0x000000, fogJSON.density );

+

+		}

+

+		color = fogJSON.color;

+		fog.color.setRGB( color[0], color[1], color[2] );

+

+		result.fogs[ fogID ] = fog;

+

+	}

+

+	// now come potentially asynchronous elements

+

+	// geometries

+

+	// count how many geometries will be loaded asynchronously

+

+	var geoID, geoJSON;

+

+	for ( geoID in data.geometries ) {

+

+		geoJSON = data.geometries[ geoID ];

+

+		if ( geoJSON.type in this.geometryHandlerMap ) {

+

+			counter_models += 1;

+

+			scope.onLoadStart();

+

+		}

+

+	}

+

+	// count how many hierarchies will be loaded asynchronously

+

+	var objID, objJSON;

+

+	for ( objID in data.objects ) {

+

+		objJSON = data.objects[ objID ];

+

+		if ( objJSON.type && ( objJSON.type in this.hierarchyHandlerMap ) ) {

+

+			counter_models += 1;

+

+			scope.onLoadStart();

+

+		}

+

+	}

+

+	total_models = counter_models;

+

+	for ( geoID in data.geometries ) {

+

+		geoJSON = data.geometries[ geoID ];

+

+		if ( geoJSON.type === "cube" ) {

+

+			geometry = new THREE.CubeGeometry( geoJSON.width, geoJSON.height, geoJSON.depth, geoJSON.widthSegments, geoJSON.heightSegments, geoJSON.depthSegments );

+			result.geometries[ geoID ] = geometry;

+

+		} else if ( geoJSON.type === "plane" ) {

+

+			geometry = new THREE.PlaneGeometry( geoJSON.width, geoJSON.height, geoJSON.widthSegments, geoJSON.heightSegments );

+			result.geometries[ geoID ] = geometry;

+

+		} else if ( geoJSON.type === "sphere" ) {

+

+			geometry = new THREE.SphereGeometry( geoJSON.radius, geoJSON.widthSegments, geoJSON.heightSegments );

+			result.geometries[ geoID ] = geometry;

+

+		} else if ( geoJSON.type === "cylinder" ) {

+

+			geometry = new THREE.CylinderGeometry( geoJSON.topRad, geoJSON.botRad, geoJSON.height, geoJSON.radSegs, geoJSON.heightSegs );

+			result.geometries[ geoID ] = geometry;

+

+		} else if ( geoJSON.type === "torus" ) {

+

+			geometry = new THREE.TorusGeometry( geoJSON.radius, geoJSON.tube, geoJSON.segmentsR, geoJSON.segmentsT );

+			result.geometries[ geoID ] = geometry;

+

+		} else if ( geoJSON.type === "icosahedron" ) {

+

+			geometry = new THREE.IcosahedronGeometry( geoJSON.radius, geoJSON.subdivisions );

+			result.geometries[ geoID ] = geometry;

+

+		} else if ( geoJSON.type in this.geometryHandlerMap ) {

+

+			var loaderParameters = {};

+

+			for ( var parType in geoJSON ) {

+

+				if ( parType !== "type" && parType !== "url" ) {

+

+					loaderParameters[ parType ] = geoJSON[ parType ];

+

+				}

+

+			}

+

+			var loader = this.geometryHandlerMap[ geoJSON.type ][ "loaderObject" ];

+			loader.load( get_url( geoJSON.url, data.urlBaseType ), create_callback_geometry( geoID ), loaderParameters );

+

+		} else if ( geoJSON.type === "embedded" ) {

+

+			var modelJson = data.embeds[ geoJSON.id ],

+				texture_path = "";

+

+			// pass metadata along to jsonLoader so it knows the format version

+

+			modelJson.metadata = data.metadata;

+

+			if ( modelJson ) {

+

+				var jsonLoader = this.geometryHandlerMap[ "ascii" ][ "loaderObject" ];

+				jsonLoader.createModel( modelJson, create_callback_embed( geoID ), texture_path );

+

+			}

+

+		}

+

+	}

+

+	// textures

+

+	// count how many textures will be loaded asynchronously

+

+	var textureID, textureJSON;

+

+	for ( textureID in data.textures ) {

+

+		textureJSON = data.textures[ textureID ];

+

+		if ( textureJSON.url instanceof Array ) {

+

+			counter_textures += textureJSON.url.length;

+

+			for( var n = 0; n < textureJSON.url.length; n ++ ) {

+

+				scope.onLoadStart();

+

+			}

+

+		} else {

+

+			counter_textures += 1;

+

+			scope.onLoadStart();

+

+		}

+

+	}

+

+	total_textures = counter_textures;

+

+	for ( textureID in data.textures ) {

+

+		textureJSON = data.textures[ textureID ];

+

+		if ( textureJSON.mapping !== undefined && THREE[ textureJSON.mapping ] !== undefined  ) {

+

+			textureJSON.mapping = new THREE[ textureJSON.mapping ]();

+

+		}

+

+		if ( textureJSON.url instanceof Array ) {

+

+			var count = textureJSON.url.length;

+			var url_array = [];

+

+			for( var i = 0; i < count; i ++ ) {

+

+				url_array[ i ] = get_url( textureJSON.url[ i ], data.urlBaseType );

+

+			}

+

+			var isCompressed = /\.dds$/i.test( url_array[ 0 ] );

+

+			if ( isCompressed ) {

+

+				texture = THREE.ImageUtils.loadCompressedTextureCube( url_array, textureJSON.mapping, generateTextureCallback( count ) );

+

+			} else {

+

+				texture = THREE.ImageUtils.loadTextureCube( url_array, textureJSON.mapping, generateTextureCallback( count ) );

+

+			}

+

+		} else {

+

+			var isCompressed = /\.dds$/i.test( textureJSON.url );

+			var fullUrl = get_url( textureJSON.url, data.urlBaseType );

+			var textureCallback = generateTextureCallback( 1 );

+

+			if ( isCompressed ) {

+

+				texture = THREE.ImageUtils.loadCompressedTexture( fullUrl, textureJSON.mapping, textureCallback );

+

+			} else {

+

+				texture = THREE.ImageUtils.loadTexture( fullUrl, textureJSON.mapping, textureCallback );

+

+			}

+

+			if ( THREE[ textureJSON.minFilter ] !== undefined )

+				texture.minFilter = THREE[ textureJSON.minFilter ];

+

+			if ( THREE[ textureJSON.magFilter ] !== undefined )

+				texture.magFilter = THREE[ textureJSON.magFilter ];

+

+			if ( textureJSON.anisotropy ) texture.anisotropy = textureJSON.anisotropy;

+

+			if ( textureJSON.repeat ) {

+

+				texture.repeat.set( textureJSON.repeat[ 0 ], textureJSON.repeat[ 1 ] );

+

+				if ( textureJSON.repeat[ 0 ] !== 1 ) texture.wrapS = THREE.RepeatWrapping;

+				if ( textureJSON.repeat[ 1 ] !== 1 ) texture.wrapT = THREE.RepeatWrapping;

+

+			}

+

+			if ( textureJSON.offset ) {

+

+				texture.offset.set( textureJSON.offset[ 0 ], textureJSON.offset[ 1 ] );

+

+			}

+

+			// handle wrap after repeat so that default repeat can be overriden

+

+			if ( textureJSON.wrap ) {

+

+				var wrapMap = {

+				"repeat" 	: THREE.RepeatWrapping,

+				"mirror"	: THREE.MirroredRepeatWrapping

+				}

+

+				if ( wrapMap[ textureJSON.wrap[ 0 ] ] !== undefined ) texture.wrapS = wrapMap[ textureJSON.wrap[ 0 ] ];

+				if ( wrapMap[ textureJSON.wrap[ 1 ] ] !== undefined ) texture.wrapT = wrapMap[ textureJSON.wrap[ 1 ] ];

+

+			}

+

+		}

+

+		result.textures[ textureID ] = texture;

+

+	}

+

+	// materials

+

+	var matID, matJSON;

+	var parID;

+

+	for ( matID in data.materials ) {

+

+		matJSON = data.materials[ matID ];

+

+		for ( parID in matJSON.parameters ) {

+

+			if ( parID === "envMap" || parID === "map" || parID === "lightMap" || parID === "bumpMap" ) {

+

+				matJSON.parameters[ parID ] = result.textures[ matJSON.parameters[ parID ] ];

+

+			} else if ( parID === "shading" ) {

+

+				matJSON.parameters[ parID ] = ( matJSON.parameters[ parID ] === "flat" ) ? THREE.FlatShading : THREE.SmoothShading;

+

+			} else if ( parID === "side" ) {

+

+				if ( matJSON.parameters[ parID ] == "double" ) {

+

+					matJSON.parameters[ parID ] = THREE.DoubleSide;

+

+				} else if ( matJSON.parameters[ parID ] == "back" ) {

+

+					matJSON.parameters[ parID ] = THREE.BackSide;

+

+				} else {

+

+					matJSON.parameters[ parID ] = THREE.FrontSide;

+

+				}

+

+			} else if ( parID === "blending" ) {

+

+				matJSON.parameters[ parID ] = matJSON.parameters[ parID ] in THREE ? THREE[ matJSON.parameters[ parID ] ] : THREE.NormalBlending;

+

+			} else if ( parID === "combine" ) {

+

+				matJSON.parameters[ parID ] = matJSON.parameters[ parID ] in THREE ? THREE[ matJSON.parameters[ parID ] ] : THREE.MultiplyOperation;

+

+			} else if ( parID === "vertexColors" ) {

+

+				if ( matJSON.parameters[ parID ] == "face" ) {

+

+					matJSON.parameters[ parID ] = THREE.FaceColors;

+

+				// default to vertex colors if "vertexColors" is anything else face colors or 0 / null / false

+

+				} else if ( matJSON.parameters[ parID ] )   {

+

+					matJSON.parameters[ parID ] = THREE.VertexColors;

+

+				}

+

+			} else if ( parID === "wrapRGB" ) {

+

+				var v3 = matJSON.parameters[ parID ];

+				matJSON.parameters[ parID ] = new THREE.Vector3( v3[ 0 ], v3[ 1 ], v3[ 2 ] );

+

+			}

+

+		}

+

+		if ( matJSON.parameters.opacity !== undefined && matJSON.parameters.opacity < 1.0 ) {

+

+			matJSON.parameters.transparent = true;

+

+		}

+

+		if ( matJSON.parameters.normalMap ) {

+

+			var shader = THREE.ShaderLib[ "normalmap" ];

+			var uniforms = THREE.UniformsUtils.clone( shader.uniforms );

+

+			var diffuse = matJSON.parameters.color;

+			var specular = matJSON.parameters.specular;

+			var ambient = matJSON.parameters.ambient;

+			var shininess = matJSON.parameters.shininess;

+

+			uniforms[ "tNormal" ].value = result.textures[ matJSON.parameters.normalMap ];

+

+			if ( matJSON.parameters.normalScale ) {

+

+				uniforms[ "uNormalScale" ].value.set( matJSON.parameters.normalScale[ 0 ], matJSON.parameters.normalScale[ 1 ] );

+

+			}

+

+			if ( matJSON.parameters.map ) {

+

+				uniforms[ "tDiffuse" ].value = matJSON.parameters.map;

+				uniforms[ "enableDiffuse" ].value = true;

+

+			}

+

+			if ( matJSON.parameters.envMap ) {

+

+				uniforms[ "tCube" ].value = matJSON.parameters.envMap;

+				uniforms[ "enableReflection" ].value = true;

+				uniforms[ "uReflectivity" ].value = matJSON.parameters.reflectivity;

+

+			}

+

+			if ( matJSON.parameters.lightMap ) {

+

+				uniforms[ "tAO" ].value = matJSON.parameters.lightMap;

+				uniforms[ "enableAO" ].value = true;

+

+			}

+

+			if ( matJSON.parameters.specularMap ) {

+

+				uniforms[ "tSpecular" ].value = result.textures[ matJSON.parameters.specularMap ];

+				uniforms[ "enableSpecular" ].value = true;

+

+			}

+

+			if ( matJSON.parameters.displacementMap ) {

+

+				uniforms[ "tDisplacement" ].value = result.textures[ matJSON.parameters.displacementMap ];

+				uniforms[ "enableDisplacement" ].value = true;

+

+				uniforms[ "uDisplacementBias" ].value = matJSON.parameters.displacementBias;

+				uniforms[ "uDisplacementScale" ].value = matJSON.parameters.displacementScale;

+

+			}

+

+			uniforms[ "uDiffuseColor" ].value.setHex( diffuse );

+			uniforms[ "uSpecularColor" ].value.setHex( specular );

+			uniforms[ "uAmbientColor" ].value.setHex( ambient );

+

+			uniforms[ "uShininess" ].value = shininess;

+

+			if ( matJSON.parameters.opacity ) {

+

+				uniforms[ "uOpacity" ].value = matJSON.parameters.opacity;

+

+			}

+

+			var parameters = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShader, uniforms: uniforms, lights: true, fog: true };

+

+			material = new THREE.ShaderMaterial( parameters );

+

+		} else {

+

+			material = new THREE[ matJSON.type ]( matJSON.parameters );

+

+		}

+

+		result.materials[ matID ] = material;

+

+	}

+

+	// second pass through all materials to initialize MeshFaceMaterials

+	// that could be referring to other materials out of order

+

+	for ( matID in data.materials ) {

+

+		matJSON = data.materials[ matID ];

+

+		if ( matJSON.parameters.materials ) {

+

+			var materialArray = [];

+

+			for ( var i = 0; i < matJSON.parameters.materials.length; i ++ ) {

+

+				var label = matJSON.parameters.materials[ i ];

+				materialArray.push( result.materials[ label ] );

+

+			}

+

+			result.materials[ matID ].materials = materialArray;

+

+		}

+

+	}

+

+	// objects ( synchronous init of procedural primitives )

+

+	handle_objects();

+

+	// defaults

+

+	if ( result.cameras && data.defaults.camera ) {

+

+		result.currentCamera = result.cameras[ data.defaults.camera ];

+

+	}

+

+	if ( result.fogs && data.defaults.fog ) {

+

+		result.scene.fog = result.fogs[ data.defaults.fog ];

+

+	}

+

+	// synchronous callback

+

+	scope.callbackSync( result );

+

+	// just in case there are no async elements

+

+	async_callback_gate();

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.TextureLoader = function () {

+

+	THREE.EventDispatcher.call( this );

+

+	this.crossOrigin = null;

+

+};

+

+THREE.TextureLoader.prototype = {

+

+	constructor: THREE.TextureLoader,

+

+	load: function ( url ) {

+

+		var scope = this;

+

+		var image = new Image();

+

+		image.addEventListener( 'load', function () {

+

+			var texture = new THREE.Texture( image );

+			texture.needsUpdate = true;

+

+			scope.dispatchEvent( { type: 'load', content: texture } );

+

+		}, false );

+

+		image.addEventListener( 'error', function () {

+

+			scope.dispatchEvent( { type: 'error', message: 'Couldn\'t load URL [' + url + ']' } );

+

+		}, false );

+

+		if ( scope.crossOrigin ) image.crossOrigin = scope.crossOrigin;

+

+		image.src = url;

+

+	}

+

+}

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Material = function () {

+

+	THREE.EventDispatcher.call( this );

+

+	this.id = THREE.MaterialIdCount ++;

+

+	this.name = '';

+

+	this.side = THREE.FrontSide;

+

+	this.opacity = 1;

+	this.transparent = false;

+

+	this.blending = THREE.NormalBlending;

+

+	this.blendSrc = THREE.SrcAlphaFactor;

+	this.blendDst = THREE.OneMinusSrcAlphaFactor;

+	this.blendEquation = THREE.AddEquation;

+

+	this.depthTest = true;

+	this.depthWrite = true;

+

+	this.polygonOffset = false;

+	this.polygonOffsetFactor = 0;

+	this.polygonOffsetUnits = 0;

+

+	this.alphaTest = 0;

+

+	this.overdraw = false; // Boolean for fixing antialiasing gaps in CanvasRenderer

+

+	this.visible = true;

+

+	this.needsUpdate = true;

+

+};

+

+THREE.Material.prototype.setValues = function ( values ) {

+

+	if ( values === undefined ) return;

+

+	for ( var key in values ) {

+

+		var newValue = values[ key ];

+

+		if ( newValue === undefined ) {

+

+			console.warn( 'THREE.Material: \'' + key + '\' parameter is undefined.' );

+			continue;

+

+		}

+

+		if ( key in this ) {

+

+			var currentValue = this[ key ];

+

+			if ( currentValue instanceof THREE.Color && newValue instanceof THREE.Color ) {

+

+				currentValue.copy( newValue );

+

+			} else if ( currentValue instanceof THREE.Color ) {

+

+				currentValue.set( newValue );

+

+			} else if ( currentValue instanceof THREE.Vector3 && newValue instanceof THREE.Vector3 ) {

+

+				currentValue.copy( newValue );

+

+			} else {

+

+				this[ key ] = newValue;

+

+			}

+

+		}

+

+	}

+

+};

+

+THREE.Material.prototype.clone = function ( material ) {

+

+	if ( material === undefined ) material = new THREE.Material();

+

+	material.name = this.name;

+

+	material.side = this.side;

+

+	material.opacity = this.opacity;

+	material.transparent = this.transparent;

+

+	material.blending = this.blending;

+

+	material.blendSrc = this.blendSrc;

+	material.blendDst = this.blendDst;

+	material.blendEquation = this.blendEquation;

+

+	material.depthTest = this.depthTest;

+	material.depthWrite = this.depthWrite;

+

+	material.polygonOffset = this.polygonOffset;

+	material.polygonOffsetFactor = this.polygonOffsetFactor;

+	material.polygonOffsetUnits = this.polygonOffsetUnits;

+

+	material.alphaTest = this.alphaTest;

+

+	material.overdraw = this.overdraw;

+

+	material.visible = this.visible;

+

+	return material;

+

+};

+

+THREE.Material.prototype.dispose = function () {

+

+	this.dispatchEvent( { type: 'dispose' } );

+

+};

+

+THREE.MaterialIdCount = 0;

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  opacity: <float>,

+ *

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  linewidth: <float>,

+ *  linecap: "round",

+ *  linejoin: "round",

+ *

+ *  vertexColors: <bool>

+ *

+ *  fog: <bool>

+ * }

+ */

+

+THREE.LineBasicMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff );

+

+	this.linewidth = 1;

+	this.linecap = 'round';

+	this.linejoin = 'round';

+

+	this.vertexColors = false;

+

+	this.fog = true;

+

+	this.setValues( parameters );

+

+};

+

+THREE.LineBasicMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.LineBasicMaterial.prototype.clone = function () {

+

+	var material = new THREE.LineBasicMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+

+	material.linewidth = this.linewidth;

+	material.linecap = this.linecap;

+	material.linejoin = this.linejoin;

+

+	material.vertexColors = this.vertexColors;

+

+	material.fog = this.fog;

+

+	return material;

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  opacity: <float>,

+ *

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  linewidth: <float>,

+ *

+ *  scale: <float>,

+ *  dashSize: <float>,

+ *  gapSize: <float>,

+ *

+ *  vertexColors: <bool>

+ *

+ *  fog: <bool>

+ * }

+ */

+

+THREE.LineDashedMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff );

+

+	this.linewidth = 1;

+

+	this.scale = 1;

+	this.dashSize = 3;

+	this.gapSize = 1;

+

+	this.vertexColors = false;

+

+	this.fog = true;

+

+	this.setValues( parameters );

+

+};

+

+THREE.LineDashedMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.LineDashedMaterial.prototype.clone = function () {

+

+	var material = new THREE.LineDashedMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+

+	material.linewidth = this.linewidth;

+

+	material.scale = this.scale;

+	material.dashSize = this.dashSize;

+	material.gapSize = this.gapSize;

+

+	material.vertexColors = this.vertexColors;

+

+	material.fog = this.fog;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  opacity: <float>,

+ *  map: new THREE.Texture( <Image> ),

+ *

+ *  lightMap: new THREE.Texture( <Image> ),

+ *

+ *  specularMap: new THREE.Texture( <Image> ),

+ *

+ *  envMap: new THREE.TextureCube( [posx, negx, posy, negy, posz, negz] ),

+ *  combine: THREE.Multiply,

+ *  reflectivity: <float>,

+ *  refractionRatio: <float>,

+ *

+ *  shading: THREE.SmoothShading,

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  wireframe: <boolean>,

+ *  wireframeLinewidth: <float>,

+ *

+ *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,

+ *

+ *  skinning: <bool>,

+ *  morphTargets: <bool>,

+ *

+ *  fog: <bool>

+ * }

+ */

+

+THREE.MeshBasicMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff ); // emissive

+

+	this.map = null;

+

+	this.lightMap = null;

+

+	this.specularMap = null;

+

+	this.envMap = null;

+	this.combine = THREE.MultiplyOperation;

+	this.reflectivity = 1;

+	this.refractionRatio = 0.98;

+

+	this.fog = true;

+

+	this.shading = THREE.SmoothShading;

+

+	this.wireframe = false;

+	this.wireframeLinewidth = 1;

+	this.wireframeLinecap = 'round';

+	this.wireframeLinejoin = 'round';

+

+	this.vertexColors = THREE.NoColors;

+

+	this.skinning = false;

+	this.morphTargets = false;

+

+	this.setValues( parameters );

+

+};

+

+THREE.MeshBasicMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.MeshBasicMaterial.prototype.clone = function () {

+

+	var material = new THREE.MeshBasicMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+

+	material.map = this.map;

+

+	material.lightMap = this.lightMap;

+

+	material.specularMap = this.specularMap;

+

+	material.envMap = this.envMap;

+	material.combine = this.combine;

+	material.reflectivity = this.reflectivity;

+	material.refractionRatio = this.refractionRatio;

+

+	material.fog = this.fog;

+

+	material.shading = this.shading;

+

+	material.wireframe = this.wireframe;

+	material.wireframeLinewidth = this.wireframeLinewidth;

+	material.wireframeLinecap = this.wireframeLinecap;

+	material.wireframeLinejoin = this.wireframeLinejoin;

+

+	material.vertexColors = this.vertexColors;

+

+	material.skinning = this.skinning;

+	material.morphTargets = this.morphTargets;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  ambient: <hex>,

+ *  emissive: <hex>,

+ *  opacity: <float>,

+ *

+ *  map: new THREE.Texture( <Image> ),

+ *

+ *  lightMap: new THREE.Texture( <Image> ),

+ *

+ *  specularMap: new THREE.Texture( <Image> ),

+ *

+ *  envMap: new THREE.TextureCube( [posx, negx, posy, negy, posz, negz] ),

+ *  combine: THREE.Multiply,

+ *  reflectivity: <float>,

+ *  refractionRatio: <float>,

+ *

+ *  shading: THREE.SmoothShading,

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  wireframe: <boolean>,

+ *  wireframeLinewidth: <float>,

+ *

+ *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,

+ *

+ *  skinning: <bool>,

+ *  morphTargets: <bool>,

+ *  morphNormals: <bool>,

+ *

+ *	fog: <bool>

+ * }

+ */

+

+THREE.MeshLambertMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff ); // diffuse

+	this.ambient = new THREE.Color( 0xffffff );

+	this.emissive = new THREE.Color( 0x000000 );

+

+	this.wrapAround = false;

+	this.wrapRGB = new THREE.Vector3( 1, 1, 1 );

+

+	this.map = null;

+

+	this.lightMap = null;

+

+	this.specularMap = null;

+

+	this.envMap = null;

+	this.combine = THREE.MultiplyOperation;

+	this.reflectivity = 1;

+	this.refractionRatio = 0.98;

+

+	this.fog = true;

+

+	this.shading = THREE.SmoothShading;

+

+	this.wireframe = false;

+	this.wireframeLinewidth = 1;

+	this.wireframeLinecap = 'round';

+	this.wireframeLinejoin = 'round';

+

+	this.vertexColors = THREE.NoColors;

+

+	this.skinning = false;

+	this.morphTargets = false;

+	this.morphNormals = false;

+

+	this.setValues( parameters );

+

+};

+

+THREE.MeshLambertMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.MeshLambertMaterial.prototype.clone = function () {

+

+	var material = new THREE.MeshLambertMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+	material.ambient.copy( this.ambient );

+	material.emissive.copy( this.emissive );

+

+	material.wrapAround = this.wrapAround;

+	material.wrapRGB.copy( this.wrapRGB );

+

+	material.map = this.map;

+

+	material.lightMap = this.lightMap;

+

+	material.specularMap = this.specularMap;

+

+	material.envMap = this.envMap;

+	material.combine = this.combine;

+	material.reflectivity = this.reflectivity;

+	material.refractionRatio = this.refractionRatio;

+

+	material.fog = this.fog;

+

+	material.shading = this.shading;

+

+	material.wireframe = this.wireframe;

+	material.wireframeLinewidth = this.wireframeLinewidth;

+	material.wireframeLinecap = this.wireframeLinecap;

+	material.wireframeLinejoin = this.wireframeLinejoin;

+

+	material.vertexColors = this.vertexColors;

+

+	material.skinning = this.skinning;

+	material.morphTargets = this.morphTargets;

+	material.morphNormals = this.morphNormals;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  ambient: <hex>,

+ *  emissive: <hex>,

+ *  specular: <hex>,

+ *  shininess: <float>,

+ *  opacity: <float>,

+ *

+ *  map: new THREE.Texture( <Image> ),

+ *

+ *  lightMap: new THREE.Texture( <Image> ),

+ *

+ *  bumpMap: new THREE.Texture( <Image> ),

+ *  bumpScale: <float>,

+ *

+ *  normalMap: new THREE.Texture( <Image> ),

+ *  normalScale: <Vector2>,

+ *

+ *  specularMap: new THREE.Texture( <Image> ),

+ *

+ *  envMap: new THREE.TextureCube( [posx, negx, posy, negy, posz, negz] ),

+ *  combine: THREE.Multiply,

+ *  reflectivity: <float>,

+ *  refractionRatio: <float>,

+ *

+ *  shading: THREE.SmoothShading,

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  wireframe: <boolean>,

+ *  wireframeLinewidth: <float>,

+ *

+ *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,

+ *

+ *  skinning: <bool>,

+ *  morphTargets: <bool>,

+ *  morphNormals: <bool>,

+ *

+ *	fog: <bool>

+ * }

+ */

+

+THREE.MeshPhongMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff ); // diffuse

+	this.ambient = new THREE.Color( 0xffffff );

+	this.emissive = new THREE.Color( 0x000000 );

+	this.specular = new THREE.Color( 0x111111 );

+	this.shininess = 30;

+

+	this.metal = false;

+	this.perPixel = true;

+

+	this.wrapAround = false;

+	this.wrapRGB = new THREE.Vector3( 1, 1, 1 );

+

+	this.map = null;

+

+	this.lightMap = null;

+

+	this.bumpMap = null;

+	this.bumpScale = 1;

+

+	this.normalMap = null;

+	this.normalScale = new THREE.Vector2( 1, 1 );

+

+	this.specularMap = null;

+

+	this.envMap = null;

+	this.combine = THREE.MultiplyOperation;

+	this.reflectivity = 1;

+	this.refractionRatio = 0.98;

+

+	this.fog = true;

+

+	this.shading = THREE.SmoothShading;

+

+	this.wireframe = false;

+	this.wireframeLinewidth = 1;

+	this.wireframeLinecap = 'round';

+	this.wireframeLinejoin = 'round';

+

+	this.vertexColors = THREE.NoColors;

+

+	this.skinning = false;

+	this.morphTargets = false;

+	this.morphNormals = false;

+

+	this.setValues( parameters );

+

+};

+

+THREE.MeshPhongMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.MeshPhongMaterial.prototype.clone = function () {

+

+	var material = new THREE.MeshPhongMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+	material.ambient.copy( this.ambient );

+	material.emissive.copy( this.emissive );

+	material.specular.copy( this.specular );

+	material.shininess = this.shininess;

+

+	material.metal = this.metal;

+	material.perPixel = this.perPixel;

+

+	material.wrapAround = this.wrapAround;

+	material.wrapRGB.copy( this.wrapRGB );

+

+	material.map = this.map;

+

+	material.lightMap = this.lightMap;

+

+	material.bumpMap = this.bumpMap;

+	material.bumpScale = this.bumpScale;

+

+	material.normalMap = this.normalMap;

+	material.normalScale.copy( this.normalScale );

+

+	material.specularMap = this.specularMap;

+

+	material.envMap = this.envMap;

+	material.combine = this.combine;

+	material.reflectivity = this.reflectivity;

+	material.refractionRatio = this.refractionRatio;

+

+	material.fog = this.fog;

+

+	material.shading = this.shading;

+

+	material.wireframe = this.wireframe;

+	material.wireframeLinewidth = this.wireframeLinewidth;

+	material.wireframeLinecap = this.wireframeLinecap;

+	material.wireframeLinejoin = this.wireframeLinejoin;

+

+	material.vertexColors = this.vertexColors;

+

+	material.skinning = this.skinning;

+	material.morphTargets = this.morphTargets;

+	material.morphNormals = this.morphNormals;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  opacity: <float>,

+ *

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  wireframe: <boolean>,

+ *  wireframeLinewidth: <float>

+ * }

+ */

+

+THREE.MeshDepthMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.wireframe = false;

+	this.wireframeLinewidth = 1;

+

+	this.setValues( parameters );

+

+};

+

+THREE.MeshDepthMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.MeshDepthMaterial.prototype.clone = function () {

+

+	var material = new THREE.LineBasicMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.wireframe = this.wireframe;

+	material.wireframeLinewidth = this.wireframeLinewidth;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ *

+ * parameters = {

+ *  opacity: <float>,

+ *

+ *  shading: THREE.FlatShading,

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  wireframe: <boolean>,

+ *  wireframeLinewidth: <float>

+ * }

+ */

+

+THREE.MeshNormalMaterial = function ( parameters ) {

+

+	THREE.Material.call( this, parameters );

+

+	this.shading = THREE.FlatShading;

+

+	this.wireframe = false;

+	this.wireframeLinewidth = 1;

+

+	this.setValues( parameters );

+

+};

+

+THREE.MeshNormalMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.MeshNormalMaterial.prototype.clone = function () {

+

+	var material = new THREE.MeshNormalMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.shading = this.shading;

+

+	material.wireframe = this.wireframe;

+	material.wireframeLinewidth = this.wireframeLinewidth;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.MeshFaceMaterial = function ( materials ) {

+

+	this.materials = materials instanceof Array ? materials : [];

+

+};

+

+THREE.MeshFaceMaterial.prototype.clone = function () {

+

+	return new THREE.MeshFaceMaterial( this.materials.slice( 0 ) );

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  opacity: <float>,

+ *  map: new THREE.Texture( <Image> ),

+ *

+ *  size: <float>,

+ *

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  vertexColors: <bool>,

+ *

+ *  fog: <bool>

+ * }

+ */

+

+THREE.ParticleBasicMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff );

+

+	this.map = null;

+

+	this.size = 1;

+	this.sizeAttenuation = true;

+

+	this.vertexColors = false;

+

+	this.fog = true;

+

+	this.setValues( parameters );

+

+};

+

+THREE.ParticleBasicMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.ParticleBasicMaterial.prototype.clone = function () {

+

+	var material = new THREE.ParticleBasicMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+

+	material.map = this.map;

+

+	material.size = this.size;

+	material.sizeAttenuation = this.sizeAttenuation;

+

+	material.vertexColors = this.vertexColors;

+

+	material.fog = this.fog;

+

+	return material;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  program: <function>,

+ *  opacity: <float>,

+ *  blending: THREE.NormalBlending

+ * }

+ */

+

+THREE.ParticleCanvasMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.color = new THREE.Color( 0xffffff );

+	this.program = function ( context, color ) {};

+

+	this.setValues( parameters );

+

+};

+

+THREE.ParticleCanvasMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.ParticleCanvasMaterial.prototype.clone = function () {

+

+	var material = new THREE.ParticleCanvasMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+	material.program = this.program;

+

+	return material;

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  fragmentShader: <string>,

+ *  vertexShader: <string>,

+ *

+ *  uniforms: { "parameter1": { type: "f", value: 1.0 }, "parameter2": { type: "i" value2: 2 } },

+ *

+ *  defines: { "label" : "value" },

+ *

+ *  shading: THREE.SmoothShading,

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  wireframe: <boolean>,

+ *  wireframeLinewidth: <float>,

+ *

+ *  lights: <bool>,

+ *

+ *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,

+ *

+ *  skinning: <bool>,

+ *  morphTargets: <bool>,

+ *  morphNormals: <bool>,

+ *

+ *	fog: <bool>

+ * }

+ */

+

+THREE.ShaderMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	this.fragmentShader = "void main() {}";

+	this.vertexShader = "void main() {}";

+	this.uniforms = {};

+	this.defines = {};

+	this.attributes = null;

+

+	this.shading = THREE.SmoothShading;

+

+	this.wireframe = false;

+	this.wireframeLinewidth = 1;

+

+	this.fog = false; // set to use scene fog

+

+	this.lights = false; // set to use scene lights

+

+	this.vertexColors = THREE.NoColors; // set to use "color" attribute stream

+

+	this.skinning = false; // set to use skinning attribute streams

+

+	this.morphTargets = false; // set to use morph targets

+	this.morphNormals = false; // set to use morph normals

+

+	this.setValues( parameters );

+

+};

+

+THREE.ShaderMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.ShaderMaterial.prototype.clone = function () {

+

+	var material = new THREE.ShaderMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.fragmentShader = this.fragmentShader;

+	material.vertexShader = this.vertexShader;

+

+	material.uniforms = THREE.UniformsUtils.clone( this.uniforms );

+

+	material.attributes = this.attributes;

+	material.defines = this.defines;

+

+	material.shading = this.shading;

+

+	material.wireframe = this.wireframe;

+	material.wireframeLinewidth = this.wireframeLinewidth;

+

+	material.fog = this.fog;

+

+	material.lights = this.lights;

+

+	material.vertexColors = this.vertexColors;

+

+	material.skinning = this.skinning;

+

+	material.morphTargets = this.morphTargets;

+	material.morphNormals = this.morphNormals;

+

+	return material;

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * parameters = {

+ *  color: <hex>,

+ *  opacity: <float>,

+ *  map: new THREE.Texture( <Image> ),

+ *

+ *  blending: THREE.NormalBlending,

+ *  depthTest: <bool>,

+ *  depthWrite: <bool>,

+ *

+ *  useScreenCoordinates: <bool>,

+ *  sizeAttenuation: <bool>,

+ *  scaleByViewport: <bool>,

+ *  alignment: THREE.SpriteAlignment.center,

+ *

+ *	uvOffset: new THREE.Vector2(),

+ *	uvScale: new THREE.Vector2(),

+ *

+ *  fog: <bool>

+ * }

+ */

+

+THREE.SpriteMaterial = function ( parameters ) {

+

+	THREE.Material.call( this );

+

+	// defaults

+

+	this.color = new THREE.Color( 0xffffff );

+	this.map = new THREE.Texture();

+

+	this.useScreenCoordinates = true;

+	this.depthTest = !this.useScreenCoordinates;

+	this.sizeAttenuation = !this.useScreenCoordinates;

+	this.scaleByViewport = !this.sizeAttenuation;

+	this.alignment = THREE.SpriteAlignment.center.clone();

+

+	this.fog = false;

+

+	this.uvOffset = new THREE.Vector2( 0, 0 );

+	this.uvScale  = new THREE.Vector2( 1, 1 );

+

+	// set parameters

+

+	this.setValues( parameters );

+

+	// override coupled defaults if not specified explicitly by parameters

+

+	parameters = parameters || {};

+

+	if ( parameters.depthTest === undefined ) this.depthTest = !this.useScreenCoordinates;

+	if ( parameters.sizeAttenuation === undefined ) this.sizeAttenuation = !this.useScreenCoordinates;

+	if ( parameters.scaleByViewport === undefined ) this.scaleByViewport = !this.sizeAttenuation;

+

+};

+

+THREE.SpriteMaterial.prototype = Object.create( THREE.Material.prototype );

+

+THREE.SpriteMaterial.prototype.clone = function () {

+

+	var material = new THREE.SpriteMaterial();

+

+	THREE.Material.prototype.clone.call( this, material );

+

+	material.color.copy( this.color );

+	material.map = this.map;

+

+	material.useScreenCoordinates = this.useScreenCoordinates;

+	material.sizeAttenuation = this.sizeAttenuation;

+	material.scaleByViewport = this.scaleByViewport;

+	material.alignment.copy( this.alignment );

+

+	material.uvOffset.copy( this.uvOffset );

+	material.uvScale.copy( this.uvScale );

+

+	material.fog = this.fog;

+

+	return material;

+

+};

+

+// Alignment enums

+

+THREE.SpriteAlignment = {};

+THREE.SpriteAlignment.topLeft = new THREE.Vector2( 1, -1 );

+THREE.SpriteAlignment.topCenter = new THREE.Vector2( 0, -1 );

+THREE.SpriteAlignment.topRight = new THREE.Vector2( -1, -1 );

+THREE.SpriteAlignment.centerLeft = new THREE.Vector2( 1, 0 );

+THREE.SpriteAlignment.center = new THREE.Vector2( 0, 0 );

+THREE.SpriteAlignment.centerRight = new THREE.Vector2( -1, 0 );

+THREE.SpriteAlignment.bottomLeft = new THREE.Vector2( 1, 1 );

+THREE.SpriteAlignment.bottomCenter = new THREE.Vector2( 0, 1 );

+THREE.SpriteAlignment.bottomRight = new THREE.Vector2( -1, 1 );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ * @author szimek / https://github.com/szimek/

+ */

+

+THREE.Texture = function ( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

+

+	THREE.EventDispatcher.call( this );

+

+	this.id = THREE.TextureIdCount ++;

+

+	this.name = '';

+

+	this.image = image;

+	this.mipmaps = [];

+

+	this.mapping = mapping !== undefined ? mapping : new THREE.UVMapping();

+

+	this.wrapS = wrapS !== undefined ? wrapS : THREE.ClampToEdgeWrapping;

+	this.wrapT = wrapT !== undefined ? wrapT : THREE.ClampToEdgeWrapping;

+

+	this.magFilter = magFilter !== undefined ? magFilter : THREE.LinearFilter;

+	this.minFilter = minFilter !== undefined ? minFilter : THREE.LinearMipMapLinearFilter;

+

+	this.anisotropy = anisotropy !== undefined ? anisotropy : 1;

+

+	this.format = format !== undefined ? format : THREE.RGBAFormat;

+	this.type = type !== undefined ? type : THREE.UnsignedByteType;

+

+	this.offset = new THREE.Vector2( 0, 0 );

+	this.repeat = new THREE.Vector2( 1, 1 );

+

+	this.generateMipmaps = true;

+	this.premultiplyAlpha = false;

+	this.flipY = true;

+	this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)

+

+	this.needsUpdate = false;

+	this.onUpdate = null;

+

+};

+

+THREE.Texture.prototype = {

+

+	constructor: THREE.Texture,

+

+	clone: function ( texture ) {

+

+		if ( texture === undefined ) texture = new THREE.Texture();

+

+		texture.image = this.image;

+		texture.mipmaps = this.mipmaps.slice(0);

+

+		texture.mapping = this.mapping;

+

+		texture.wrapS = this.wrapS;

+		texture.wrapT = this.wrapT;

+

+		texture.magFilter = this.magFilter;

+		texture.minFilter = this.minFilter;

+

+		texture.anisotropy = this.anisotropy;

+

+		texture.format = this.format;

+		texture.type = this.type;

+

+		texture.offset.copy( this.offset );

+		texture.repeat.copy( this.repeat );

+

+		texture.generateMipmaps = this.generateMipmaps;

+		texture.premultiplyAlpha = this.premultiplyAlpha;

+		texture.flipY = this.flipY;

+		texture.unpackAlignment = this.unpackAlignment;

+

+		return texture;

+

+	},

+

+	dispose: function () {

+

+		this.dispatchEvent( { type: 'dispose' } );

+

+	}

+

+};

+

+THREE.TextureIdCount = 0;

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.CompressedTexture = function ( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy ) {

+

+	THREE.Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

+

+	this.image = { width: width, height: height };

+	this.mipmaps = mipmaps;

+

+	this.generateMipmaps = false; // WebGL currently can't generate mipmaps for compressed textures, they must be embedded in DDS file

+

+};

+

+THREE.CompressedTexture.prototype = Object.create( THREE.Texture.prototype );

+

+THREE.CompressedTexture.prototype.clone = function () {

+

+	var texture = new THREE.CompressedTexture();

+

+	THREE.Texture.prototype.clone.call( this, texture );

+

+	return texture;

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.DataTexture = function ( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy ) {

+

+	THREE.Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

+

+	this.image = { data: data, width: width, height: height };

+

+};

+

+THREE.DataTexture.prototype = Object.create( THREE.Texture.prototype );

+

+THREE.DataTexture.prototype.clone = function () {

+

+	var texture = new THREE.DataTexture();

+

+	THREE.Texture.prototype.clone.call( this, texture );

+

+	return texture;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Particle = function ( material ) {

+

+	THREE.Object3D.call( this );

+

+	this.material = material;

+

+};

+

+THREE.Particle.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Particle.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.Particle( this.material );

+

+	THREE.Object3D.prototype.clone.call( this, object );

+

+	return object;

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.ParticleSystem = function ( geometry, material ) {

+

+	THREE.Object3D.call( this );

+

+	this.geometry = geometry;

+	this.material = ( material !== undefined ) ? material : new THREE.ParticleBasicMaterial( { color: Math.random() * 0xffffff } );

+

+	this.sortParticles = false;

+

+	if ( this.geometry ) {

+

+		// calc bound radius

+

+		if( this.geometry.boundingSphere === null ) {

+

+			this.geometry.computeBoundingSphere();

+

+		}

+

+	}

+

+	this.frustumCulled = false;

+

+};

+

+THREE.ParticleSystem.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.ParticleSystem.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.ParticleSystem( this.geometry, this.material );

+	object.sortParticles = this.sortParticles;

+

+	THREE.Object3D.prototype.clone.call( this, object );

+

+	return object;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Line = function ( geometry, material, type ) {

+

+	THREE.Object3D.call( this );

+

+	this.geometry = geometry;

+	this.material = ( material !== undefined ) ? material : new THREE.LineBasicMaterial( { color: Math.random() * 0xffffff } );

+	this.type = ( type !== undefined ) ? type : THREE.LineStrip;

+

+	if ( this.geometry ) {

+

+		if ( ! this.geometry.boundingSphere ) {

+

+			this.geometry.computeBoundingSphere();

+

+		}

+

+	}

+

+};

+

+THREE.LineStrip = 0;

+THREE.LinePieces = 1;

+

+THREE.Line.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Line.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.Line( this.geometry, this.material, this.type );

+

+	THREE.Object3D.prototype.clone.call( this, object );

+

+	return object;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ * @author mikael emtinger / http://gomo.se/

+ * @author jonobr1 / http://jonobr1.com/

+ */

+

+THREE.Mesh = function ( geometry, material ) {

+

+	THREE.Object3D.call( this );

+

+	this.geometry = geometry;

+	this.material = ( material !== undefined ) ? material : new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, wireframe: true } );

+

+	if ( this.geometry !== undefined ) {

+

+		if ( this.geometry.boundingSphere === null ) {

+

+			this.geometry.computeBoundingSphere();

+

+		}

+

+		this.updateMorphTargets();

+

+	}

+

+};

+

+THREE.Mesh.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Mesh.prototype.updateMorphTargets = function () {

+

+	if ( this.geometry.morphTargets.length > 0 ) {

+

+		this.morphTargetBase = -1;

+		this.morphTargetForcedOrder = [];

+		this.morphTargetInfluences = [];

+		this.morphTargetDictionary = {};

+

+		for ( var m = 0, ml = this.geometry.morphTargets.length; m < ml; m ++ ) {

+

+			this.morphTargetInfluences.push( 0 );

+			this.morphTargetDictionary[ this.geometry.morphTargets[ m ].name ] = m;

+

+		}

+

+	}

+

+};

+

+THREE.Mesh.prototype.getMorphTargetIndexByName = function ( name ) {

+

+	if ( this.morphTargetDictionary[ name ] !== undefined ) {

+

+		return this.morphTargetDictionary[ name ];

+

+	}

+

+	console.log( "THREE.Mesh.getMorphTargetIndexByName: morph target " + name + " does not exist. Returning 0." );

+

+	return 0;

+

+};

+

+THREE.Mesh.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.Mesh( this.geometry, this.material );

+

+	THREE.Object3D.prototype.clone.call( this, object );

+

+	return object;

+

+};

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Bone = function( belongsToSkin ) {

+

+	THREE.Object3D.call( this );

+

+	this.skin = belongsToSkin;

+	this.skinMatrix = new THREE.Matrix4();

+

+};

+

+THREE.Bone.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Bone.prototype.update = function ( parentSkinMatrix, forceUpdate ) {

+

+	// update local

+

+	if ( this.matrixAutoUpdate ) {

+

+		forceUpdate |= this.updateMatrix();

+

+	}

+

+	// update skin matrix

+

+	if ( forceUpdate || this.matrixWorldNeedsUpdate ) {

+

+		if( parentSkinMatrix ) {

+

+			this.skinMatrix.multiplyMatrices( parentSkinMatrix, this.matrix );

+

+		} else {

+

+			this.skinMatrix.copy( this.matrix );

+

+		}

+

+		this.matrixWorldNeedsUpdate = false;

+		forceUpdate = true;

+

+	}

+

+	// update children

+

+	var child, i, l = this.children.length;

+

+	for ( i = 0; i < l; i ++ ) {

+

+		this.children[ i ].update( this.skinMatrix, forceUpdate );

+

+	}

+

+};

+

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.SkinnedMesh = function ( geometry, material, useVertexTexture ) {

+

+	THREE.Mesh.call( this, geometry, material );

+

+	//

+

+	this.useVertexTexture = useVertexTexture !== undefined ? useVertexTexture : true;

+

+	// init bones

+

+	this.identityMatrix = new THREE.Matrix4();

+

+	this.bones = [];

+	this.boneMatrices = [];

+

+	var b, bone, gbone, p, q, s;

+

+	if ( this.geometry && this.geometry.bones !== undefined ) {

+

+		for ( b = 0; b < this.geometry.bones.length; b ++ ) {

+

+			gbone = this.geometry.bones[ b ];

+

+			p = gbone.pos;

+			q = gbone.rotq;

+			s = gbone.scl;

+

+			bone = this.addBone();

+

+			bone.name = gbone.name;

+			bone.position.set( p[0], p[1], p[2] );

+			bone.quaternion.set( q[0], q[1], q[2], q[3] );

+			bone.useQuaternion = true;

+

+			if ( s !== undefined ) {

+

+				bone.scale.set( s[0], s[1], s[2] );

+

+			} else {

+

+				bone.scale.set( 1, 1, 1 );

+

+			}

+

+		}

+

+		for ( b = 0; b < this.bones.length; b ++ ) {

+

+			gbone = this.geometry.bones[ b ];

+			bone = this.bones[ b ];

+

+			if ( gbone.parent === -1 ) {

+

+				this.add( bone );

+

+			} else {

+

+				this.bones[ gbone.parent ].add( bone );

+

+			}

+

+		}

+

+		//

+

+		var nBones = this.bones.length;

+

+		if ( this.useVertexTexture ) {

+

+			// layout (1 matrix = 4 pixels)

+			//	RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)

+			//  with  8x8  pixel texture max   16 bones  (8 * 8  / 4)

+			//  	 16x16 pixel texture max   64 bones (16 * 16 / 4)

+			//  	 32x32 pixel texture max  256 bones (32 * 32 / 4)

+			//  	 64x64 pixel texture max 1024 bones (64 * 64 / 4)

+

+			var size;

+

+			if ( nBones > 256 )

+				size = 64;

+			else if ( nBones > 64 )

+				size = 32;

+			else if ( nBones > 16 )

+				size = 16;

+			else

+				size = 8;

+

+			this.boneTextureWidth = size;

+			this.boneTextureHeight = size;

+

+			this.boneMatrices = new Float32Array( this.boneTextureWidth * this.boneTextureHeight * 4 ); // 4 floats per RGBA pixel

+			this.boneTexture = new THREE.DataTexture( this.boneMatrices, this.boneTextureWidth, this.boneTextureHeight, THREE.RGBAFormat, THREE.FloatType );

+			this.boneTexture.minFilter = THREE.NearestFilter;

+			this.boneTexture.magFilter = THREE.NearestFilter;

+			this.boneTexture.generateMipmaps = false;

+			this.boneTexture.flipY = false;

+

+		} else {

+

+			this.boneMatrices = new Float32Array( 16 * nBones );

+

+		}

+

+		this.pose();

+

+	}

+

+};

+

+THREE.SkinnedMesh.prototype = Object.create( THREE.Mesh.prototype );

+

+THREE.SkinnedMesh.prototype.addBone = function( bone ) {

+

+	if ( bone === undefined ) {

+

+		bone = new THREE.Bone( this );

+

+	}

+

+	this.bones.push( bone );

+

+	return bone;

+

+};

+

+THREE.SkinnedMesh.prototype.updateMatrixWorld = function ( force ) {

+

+	this.matrixAutoUpdate && this.updateMatrix();

+

+	// update matrixWorld

+

+	if ( this.matrixWorldNeedsUpdate || force ) {

+

+		if ( this.parent ) {

+

+			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

+

+		} else {

+

+			this.matrixWorld.copy( this.matrix );

+

+		}

+

+		this.matrixWorldNeedsUpdate = false;

+

+		force = true;

+

+	}

+

+	// update children

+

+	for ( var i = 0, l = this.children.length; i < l; i ++ ) {

+

+		var child = this.children[ i ];

+

+		if ( child instanceof THREE.Bone ) {

+

+			child.update( this.identityMatrix, false );

+

+		} else {

+

+			child.updateMatrixWorld( true );

+

+		}

+

+	}

+

+	// make a snapshot of the bones' rest position

+

+	if ( this.boneInverses == undefined ) {

+

+		this.boneInverses = [];

+

+		for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

+

+			var inverse = new THREE.Matrix4();

+

+			inverse.getInverse( this.bones[ b ].skinMatrix );

+

+			this.boneInverses.push( inverse );

+

+		}

+

+	}

+

+	// flatten bone matrices to array

+

+	for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

+

+		// compute the offset between the current and the original transform;

+

+		//TODO: we could get rid of this multiplication step if the skinMatrix

+		// was already representing the offset; however, this requires some

+		// major changes to the animation system

+

+		THREE.SkinnedMesh.offsetMatrix.multiplyMatrices( this.bones[ b ].skinMatrix, this.boneInverses[ b ] );

+

+		THREE.SkinnedMesh.offsetMatrix.flattenToArrayOffset( this.boneMatrices, b * 16 );

+

+	}

+

+	if ( this.useVertexTexture ) {

+

+		this.boneTexture.needsUpdate = true;

+

+	}

+

+};

+

+THREE.SkinnedMesh.prototype.pose = function () {

+

+	this.updateMatrixWorld( true );

+

+	for ( var i = 0; i < this.geometry.skinIndices.length; i ++ ) {

+

+		// normalize weights

+

+		var sw = this.geometry.skinWeights[ i ];

+

+		var scale = 1.0 / sw.lengthManhattan();

+

+		if ( scale !== Infinity ) {

+

+			sw.multiplyScalar( scale );

+

+		} else {

+

+			sw.set( 1 ); // this will be normalized by the shader anyway

+

+		}

+

+	}

+

+};

+

+THREE.SkinnedMesh.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.SkinnedMesh( this.geometry, this.material, this.useVertexTexture );

+

+	THREE.Mesh.prototype.clone.call( this, object );

+

+	return object;

+

+};

+

+THREE.SkinnedMesh.offsetMatrix = new THREE.Matrix4();

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.MorphAnimMesh = function ( geometry, material ) {

+

+	THREE.Mesh.call( this, geometry, material );

+

+	// API

+

+	this.duration = 1000; // milliseconds

+	this.mirroredLoop = false;

+	this.time = 0;

+

+	// internals

+

+	this.lastKeyframe = 0;

+	this.currentKeyframe = 0;

+

+	this.direction = 1;

+	this.directionBackwards = false;

+

+	this.setFrameRange( 0, this.geometry.morphTargets.length - 1 );

+

+};

+

+THREE.MorphAnimMesh.prototype = Object.create( THREE.Mesh.prototype );

+

+THREE.MorphAnimMesh.prototype.setFrameRange = function ( start, end ) {

+

+	this.startKeyframe = start;

+	this.endKeyframe = end;

+

+	this.length = this.endKeyframe - this.startKeyframe + 1;

+

+};

+

+THREE.MorphAnimMesh.prototype.setDirectionForward = function () {

+

+	this.direction = 1;

+	this.directionBackwards = false;

+

+};

+

+THREE.MorphAnimMesh.prototype.setDirectionBackward = function () {

+

+	this.direction = -1;

+	this.directionBackwards = true;

+

+};

+

+THREE.MorphAnimMesh.prototype.parseAnimations = function () {

+

+	var geometry = this.geometry;

+

+	if ( ! geometry.animations ) geometry.animations = {};

+

+	var firstAnimation, animations = geometry.animations;

+

+	var pattern = /([a-z]+)(\d+)/;

+

+	for ( var i = 0, il = geometry.morphTargets.length; i < il; i ++ ) {

+

+		var morph = geometry.morphTargets[ i ];

+		var parts = morph.name.match( pattern );

+

+		if ( parts && parts.length > 1 ) {

+

+			var label = parts[ 1 ];

+			var num = parts[ 2 ];

+

+			if ( ! animations[ label ] ) animations[ label ] = { start: Infinity, end: -Infinity };

+

+			var animation = animations[ label ];

+

+			if ( i < animation.start ) animation.start = i;

+			if ( i > animation.end ) animation.end = i;

+

+			if ( ! firstAnimation ) firstAnimation = label;

+

+		}

+

+	}

+

+	geometry.firstAnimation = firstAnimation;

+

+};

+

+THREE.MorphAnimMesh.prototype.setAnimationLabel = function ( label, start, end ) {

+

+	if ( ! this.geometry.animations ) this.geometry.animations = {};

+

+	this.geometry.animations[ label ] = { start: start, end: end };

+

+};

+

+THREE.MorphAnimMesh.prototype.playAnimation = function ( label, fps ) {

+

+	var animation = this.geometry.animations[ label ];

+

+	if ( animation ) {

+

+		this.setFrameRange( animation.start, animation.end );

+		this.duration = 1000 * ( ( animation.end - animation.start ) / fps );

+		this.time = 0;

+

+	} else {

+

+		console.warn( "animation[" + label + "] undefined" );

+

+	}

+

+};

+

+THREE.MorphAnimMesh.prototype.updateAnimation = function ( delta ) {

+

+	var frameTime = this.duration / this.length;

+

+	this.time += this.direction * delta;

+

+	if ( this.mirroredLoop ) {

+

+		if ( this.time > this.duration || this.time < 0 ) {

+

+			this.direction *= -1;

+

+			if ( this.time > this.duration ) {

+

+				this.time = this.duration;

+				this.directionBackwards = true;

+

+			}

+

+			if ( this.time < 0 ) {

+

+				this.time = 0;

+				this.directionBackwards = false;

+

+			}

+

+		}

+

+	} else {

+

+		this.time = this.time % this.duration;

+

+		if ( this.time < 0 ) this.time += this.duration;

+

+	}

+

+	var keyframe = this.startKeyframe + THREE.Math.clamp( Math.floor( this.time / frameTime ), 0, this.length - 1 );

+

+	if ( keyframe !== this.currentKeyframe ) {

+

+		this.morphTargetInfluences[ this.lastKeyframe ] = 0;

+		this.morphTargetInfluences[ this.currentKeyframe ] = 1;

+

+		this.morphTargetInfluences[ keyframe ] = 0;

+

+		this.lastKeyframe = this.currentKeyframe;

+		this.currentKeyframe = keyframe;

+

+	}

+

+	var mix = ( this.time % frameTime ) / frameTime;

+

+	if ( this.directionBackwards ) {

+

+		mix = 1 - mix;

+

+	}

+

+	this.morphTargetInfluences[ this.currentKeyframe ] = mix;

+	this.morphTargetInfluences[ this.lastKeyframe ] = 1 - mix;

+

+};

+

+THREE.MorphAnimMesh.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.MorphAnimMesh( this.geometry, this.material );

+

+	object.duration = this.duration;

+	object.mirroredLoop = this.mirroredLoop;

+	object.time = this.time;

+

+	object.lastKeyframe = this.lastKeyframe;

+	object.currentKeyframe = this.currentKeyframe;

+

+	object.direction = this.direction;

+	object.directionBackwards = this.directionBackwards;

+

+	THREE.Mesh.prototype.clone.call( this, object );

+

+	return object;

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Ribbon = function ( geometry, material ) {

+

+	THREE.Object3D.call( this );

+

+	this.geometry = geometry;

+	this.material = material;

+

+};

+

+THREE.Ribbon.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Ribbon.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.Ribbon( this.geometry, this.material );

+

+	THREE.Object3D.prototype.clone.call( this, object );

+

+	return object;

+

+};

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.LOD = function () {

+

+	THREE.Object3D.call( this );

+

+	this.LODs = [];

+

+};

+

+

+THREE.LOD.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.LOD.prototype.addLevel = function ( object3D, visibleAtDistance ) {

+

+	if ( visibleAtDistance === undefined ) {

+

+		visibleAtDistance = 0;

+

+	}

+

+	visibleAtDistance = Math.abs( visibleAtDistance );

+

+	for ( var l = 0; l < this.LODs.length; l ++ ) {

+

+		if ( visibleAtDistance < this.LODs[ l ].visibleAtDistance ) {

+

+			break;

+

+		}

+

+	}

+

+	this.LODs.splice( l, 0, { visibleAtDistance: visibleAtDistance, object3D: object3D } );

+	this.add( object3D );

+

+};

+

+THREE.LOD.prototype.update = function ( camera ) {

+

+	if ( this.LODs.length > 1 ) {

+

+		camera.matrixWorldInverse.getInverse( camera.matrixWorld );

+

+		var inverse  = camera.matrixWorldInverse;

+		var distance = -( inverse.elements[2] * this.matrixWorld.elements[12] + inverse.elements[6] * this.matrixWorld.elements[13] + inverse.elements[10] * this.matrixWorld.elements[14] + inverse.elements[14] );

+

+		this.LODs[ 0 ].object3D.visible = true;

+

+		for ( var l = 1; l < this.LODs.length; l ++ ) {

+

+			if( distance >= this.LODs[ l ].visibleAtDistance ) {

+

+				this.LODs[ l - 1 ].object3D.visible = false;

+				this.LODs[ l     ].object3D.visible = true;

+

+			} else {

+

+				break;

+

+			}

+

+		}

+

+		for( ; l < this.LODs.length; l ++ ) {

+

+			this.LODs[ l ].object3D.visible = false;

+

+		}

+

+	}

+

+};

+

+THREE.LOD.prototype.clone = function () {

+

+	// TODO

+

+};

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Sprite = function ( material ) {

+

+	THREE.Object3D.call( this );

+

+	this.material = ( material !== undefined ) ? material : new THREE.SpriteMaterial();

+

+	this.rotation3d = this.rotation;

+	this.rotation = 0;

+

+};

+

+THREE.Sprite.prototype = Object.create( THREE.Object3D.prototype );

+

+/*

+ * Custom update matrix

+ */

+

+THREE.Sprite.prototype.updateMatrix = function () {

+

+	this.matrix.setPosition( this.position );

+

+	this.rotation3d.set( 0, 0, this.rotation );

+	this.matrix.setRotationFromEuler( this.rotation3d );

+

+	if ( this.scale.x !== 1 || this.scale.y !== 1 ) {

+

+		this.matrix.scale( this.scale );

+

+	}

+

+	this.matrixWorldNeedsUpdate = true;

+

+};

+

+THREE.Sprite.prototype.clone = function ( object ) {

+

+	if ( object === undefined ) object = new THREE.Sprite( this.material );

+

+	THREE.Object3D.prototype.clone.call( this, object );

+

+	return object;

+

+};

+

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.Scene = function () {

+

+	THREE.Object3D.call( this );

+

+	this.fog = null;

+	this.overrideMaterial = null;

+

+	this.matrixAutoUpdate = false;

+

+	this.__objects = [];

+	this.__lights = [];

+

+	this.__objectsAdded = [];

+	this.__objectsRemoved = [];

+

+};

+

+THREE.Scene.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Scene.prototype.__addObject = function ( object ) {

+

+	if ( object instanceof THREE.Light ) {

+

+		if ( this.__lights.indexOf( object ) === - 1 ) {

+

+			this.__lights.push( object );

+

+		}

+

+		if ( object.target && object.target.parent === undefined ) {

+

+			this.add( object.target );

+

+		}

+

+	} else if ( !( object instanceof THREE.Camera || object instanceof THREE.Bone ) ) {

+

+		if ( this.__objects.indexOf( object ) === - 1 ) {

+

+			this.__objects.push( object );

+			this.__objectsAdded.push( object );

+

+			// check if previously removed

+

+			var i = this.__objectsRemoved.indexOf( object );

+

+			if ( i !== -1 ) {

+

+				this.__objectsRemoved.splice( i, 1 );

+

+			}

+

+		}

+

+	}

+

+	for ( var c = 0; c < object.children.length; c ++ ) {

+

+		this.__addObject( object.children[ c ] );

+

+	}

+

+};

+

+THREE.Scene.prototype.__removeObject = function ( object ) {

+

+	if ( object instanceof THREE.Light ) {

+

+		var i = this.__lights.indexOf( object );

+

+		if ( i !== -1 ) {

+

+			this.__lights.splice( i, 1 );

+

+		}

+

+	} else if ( !( object instanceof THREE.Camera ) ) {

+

+		var i = this.__objects.indexOf( object );

+

+		if( i !== -1 ) {

+

+			this.__objects.splice( i, 1 );

+			this.__objectsRemoved.push( object );

+

+			// check if previously added

+

+			var ai = this.__objectsAdded.indexOf( object );

+

+			if ( ai !== -1 ) {

+

+				this.__objectsAdded.splice( ai, 1 );

+

+			}

+

+		}

+

+	}

+

+	for ( var c = 0; c < object.children.length; c ++ ) {

+

+		this.__removeObject( object.children[ c ] );

+

+	}

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Fog = function ( hex, near, far ) {

+

+	this.name = '';

+

+	this.color = new THREE.Color( hex );

+

+	this.near = ( near !== undefined ) ? near : 1;

+	this.far = ( far !== undefined ) ? far : 1000;

+

+};

+

+THREE.Fog.prototype.clone = function () {

+

+	return new THREE.Fog( this.color.getHex(), this.near, this.far );

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.FogExp2 = function ( hex, density ) {

+

+	this.name = '';

+	this.color = new THREE.Color( hex );

+	this.density = ( density !== undefined ) ? density : 0.00025;

+

+};

+

+THREE.FogExp2.prototype.clone = function () {

+

+	return new THREE.FogExp2( this.color.getHex(), this.density );

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.CanvasRenderer = function ( parameters ) {

+

+	console.log( 'THREE.CanvasRenderer', THREE.REVISION );

+

+	var smoothstep = THREE.Math.smoothstep;

+

+	parameters = parameters || {};

+

+	var _this = this,

+	_renderData, _elements, _lights,

+	_projector = new THREE.Projector(),

+

+	_canvas = parameters.canvas !== undefined

+			? parameters.canvas

+			: document.createElement( 'canvas' ),

+

+	_canvasWidth, _canvasHeight, _canvasWidthHalf, _canvasHeightHalf,

+	_context = _canvas.getContext( '2d' ),

+

+	_clearColor = new THREE.Color( 0x000000 ),

+	_clearOpacity = 0,

+

+	_contextGlobalAlpha = 1,

+	_contextGlobalCompositeOperation = 0,

+	_contextStrokeStyle = null,

+	_contextFillStyle = null,

+	_contextLineWidth = null,

+	_contextLineCap = null,

+	_contextLineJoin = null,

+	_contextDashSize = null,

+	_contextGapSize = 0,

+

+	_v1, _v2, _v3, _v4,

+	_v5 = new THREE.RenderableVertex(),

+	_v6 = new THREE.RenderableVertex(),

+

+	_v1x, _v1y, _v2x, _v2y, _v3x, _v3y,

+	_v4x, _v4y, _v5x, _v5y, _v6x, _v6y,

+

+	_color = new THREE.Color(),

+	_color1 = new THREE.Color(),

+	_color2 = new THREE.Color(),

+	_color3 = new THREE.Color(),

+	_color4 = new THREE.Color(),

+

+	_diffuseColor = new THREE.Color(),

+	_emissiveColor = new THREE.Color(),

+

+	_lightColor = new THREE.Color(),

+

+	_patterns = {}, _imagedatas = {},

+

+	_near, _far,

+

+	_image, _uvs,

+	_uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y,

+

+	_clipBox = new THREE.Box2(),

+	_clearBox = new THREE.Box2(),

+	_elemBox = new THREE.Box2(),

+

+	_enableLighting = false,

+	_ambientLight = new THREE.Color(),

+	_directionalLights = new THREE.Color(),

+	_pointLights = new THREE.Color(),

+

+	_vector3 = new THREE.Vector3(), // Needed for PointLight

+

+	_pixelMap, _pixelMapContext, _pixelMapImage, _pixelMapData,

+	_gradientMap, _gradientMapContext, _gradientMapQuality = 16;

+

+	_pixelMap = document.createElement( 'canvas' );

+	_pixelMap.width = _pixelMap.height = 2;

+

+	_pixelMapContext = _pixelMap.getContext( '2d' );

+	_pixelMapContext.fillStyle = 'rgba(0,0,0,1)';

+	_pixelMapContext.fillRect( 0, 0, 2, 2 );

+

+	_pixelMapImage = _pixelMapContext.getImageData( 0, 0, 2, 2 );

+	_pixelMapData = _pixelMapImage.data;

+

+	_gradientMap = document.createElement( 'canvas' );

+	_gradientMap.width = _gradientMap.height = _gradientMapQuality;

+

+	_gradientMapContext = _gradientMap.getContext( '2d' );

+	_gradientMapContext.translate( - _gradientMapQuality / 2, - _gradientMapQuality / 2 );

+	_gradientMapContext.scale( _gradientMapQuality, _gradientMapQuality );

+

+	_gradientMapQuality --; // Fix UVs

+

+	// dash+gap fallbacks for Firefox and everything else

+

+	if ( _context.setLineDash === undefined ) {

+

+		if ( _context.mozDash !== undefined ) {

+

+			_context.setLineDash = function ( values ) {

+

+				_context.mozDash = values[ 0 ] !== null ? values : null;

+

+			}

+

+		} else {

+

+			_context.setLineDash = function () {}

+

+		}

+

+	}

+

+	this.domElement = _canvas;

+

+	this.devicePixelRatio = parameters.devicePixelRatio !== undefined

+				? parameters.devicePixelRatio

+				: window.devicePixelRatio !== undefined

+					? window.devicePixelRatio

+					: 1;

+

+	this.autoClear = true;

+	this.sortObjects = true;

+	this.sortElements = true;

+

+	this.info = {

+

+		render: {

+

+			vertices: 0,

+			faces: 0

+

+		}

+

+	}

+

+	// WebGLRenderer compatibility

+

+	this.supportsVertexTextures = function () {};

+	this.setFaceCulling = function () {};

+

+	this.setSize = function ( width, height ) {

+

+		_canvasWidth = width * this.devicePixelRatio;

+		_canvasHeight = height * this.devicePixelRatio;

+

+		_canvasWidthHalf = Math.floor( _canvasWidth / 2 );

+		_canvasHeightHalf = Math.floor( _canvasHeight / 2 );

+

+		_canvas.width = _canvasWidth;

+		_canvas.height = _canvasHeight;

+

+		_canvas.style.width = width + 'px';

+		_canvas.style.height = height + 'px';

+

+		_clipBox.set(

+			new THREE.Vector2( - _canvasWidthHalf, - _canvasHeightHalf ),

+			new THREE.Vector2( _canvasWidthHalf, _canvasHeightHalf )

+		);

+

+		_clearBox.set(

+			new THREE.Vector2( - _canvasWidthHalf, - _canvasHeightHalf ),

+			new THREE.Vector2( _canvasWidthHalf, _canvasHeightHalf )

+		);

+

+		_contextGlobalAlpha = 1;

+		_contextGlobalCompositeOperation = 0;

+		_contextStrokeStyle = null;

+		_contextFillStyle = null;

+		_contextLineWidth = null;

+		_contextLineCap = null;

+		_contextLineJoin = null;

+

+	};

+

+	this.setClearColor = function ( color, opacity ) {

+

+		_clearColor.copy( color );

+		_clearOpacity = opacity !== undefined ? opacity : 1;

+

+		_clearBox.set(

+			new THREE.Vector2( - _canvasWidthHalf, - _canvasHeightHalf ),

+			new THREE.Vector2( _canvasWidthHalf, _canvasHeightHalf )

+		);

+

+	};

+

+	this.setClearColorHex = function ( hex, opacity ) {

+

+		_clearColor.setHex( hex );

+		_clearOpacity = opacity !== undefined ? opacity : 1;

+

+		_clearBox.set(

+			new THREE.Vector2( - _canvasWidthHalf, - _canvasHeightHalf ),

+			new THREE.Vector2( _canvasWidthHalf, _canvasHeightHalf )

+		);

+

+	};

+

+	this.getMaxAnisotropy  = function () {

+

+		return 0;

+

+	};

+

+	this.clear = function () {

+

+		_context.setTransform( 1, 0, 0, - 1, _canvasWidthHalf, _canvasHeightHalf );

+

+		if ( _clearBox.empty() === false ) {

+

+			_clearBox.intersect( _clipBox );

+			_clearBox.expandByScalar( 2 );

+

+			if ( _clearOpacity < 1 ) {

+

+				_context.clearRect(

+					_clearBox.min.x | 0,

+					_clearBox.min.y | 0,

+					( _clearBox.max.x - _clearBox.min.x ) | 0,

+					( _clearBox.max.y - _clearBox.min.y ) | 0

+				);

+

+			}

+

+			if ( _clearOpacity > 0 ) {

+

+				setBlending( THREE.NormalBlending );

+				setOpacity( 1 );

+

+				setFillStyle( 'rgba(' + Math.floor( _clearColor.r * 255 ) + ',' + Math.floor( _clearColor.g * 255 ) + ',' + Math.floor( _clearColor.b * 255 ) + ',' + _clearOpacity + ')' );

+

+				_context.fillRect(

+					_clearBox.min.x | 0,

+					_clearBox.min.y | 0,

+					( _clearBox.max.x - _clearBox.min.x ) | 0,

+					( _clearBox.max.y - _clearBox.min.y ) | 0

+				);

+

+			}

+

+			_clearBox.makeEmpty();

+

+		}

+

+

+	};

+

+	this.render = function ( scene, camera ) {

+

+		if ( camera instanceof THREE.Camera === false ) {

+

+			console.error( 'THREE.CanvasRenderer.render: camera is not an instance of THREE.Camera.' );

+			return;

+

+		}

+

+		if ( this.autoClear === true ) {

+

+			this.clear();

+

+		}

+

+		_context.setTransform( 1, 0, 0, - 1, _canvasWidthHalf, _canvasHeightHalf );

+

+		_this.info.render.vertices = 0;

+		_this.info.render.faces = 0;

+

+		_renderData = _projector.projectScene( scene, camera, this.sortObjects, this.sortElements );

+		_elements = _renderData.elements;

+		_lights = _renderData.lights;

+

+		/* DEBUG

+		setFillStyle( 'rgba( 0, 255, 255, 0.5 )' );

+		_context.fillRect( _clipBox.min.x, _clipBox.min.y, _clipBox.max.x - _clipBox.min.x, _clipBox.max.y - _clipBox.min.y );

+		*/

+

+		_enableLighting = _lights.length > 0;

+

+		if ( _enableLighting === true ) {

+

+			 calculateLights();

+

+		}

+

+		for ( var e = 0, el = _elements.length; e < el; e++ ) {

+

+			var element = _elements[ e ];

+

+			var material = element.material;

+

+			if ( material === undefined || material.visible === false ) continue;

+

+			_elemBox.makeEmpty();

+

+			if ( element instanceof THREE.RenderableParticle ) {

+

+				_v1 = element;

+				_v1.x *= _canvasWidthHalf; _v1.y *= _canvasHeightHalf;

+

+				renderParticle( _v1, element, material );

+

+			} else if ( element instanceof THREE.RenderableLine ) {

+

+				_v1 = element.v1; _v2 = element.v2;

+

+				_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;

+				_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;

+

+				_elemBox.setFromPoints( [ _v1.positionScreen, _v2.positionScreen ] );

+

+				if ( _clipBox.isIntersectionBox( _elemBox ) === true ) {

+

+					renderLine( _v1, _v2, element, material );

+

+				}

+

+			} else if ( element instanceof THREE.RenderableFace3 ) {

+

+				_v1 = element.v1; _v2 = element.v2; _v3 = element.v3;

+

+				if ( _v1.positionScreen.z < -1 || _v1.positionScreen.z > 1 ) continue;

+				if ( _v2.positionScreen.z < -1 || _v2.positionScreen.z > 1 ) continue;

+				if ( _v3.positionScreen.z < -1 || _v3.positionScreen.z > 1 ) continue;

+

+				_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;

+				_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;

+				_v3.positionScreen.x *= _canvasWidthHalf; _v3.positionScreen.y *= _canvasHeightHalf;

+

+				if ( material.overdraw === true ) {

+

+					expand( _v1.positionScreen, _v2.positionScreen );

+					expand( _v2.positionScreen, _v3.positionScreen );

+					expand( _v3.positionScreen, _v1.positionScreen );

+

+				}

+

+				_elemBox.setFromPoints( [ _v1.positionScreen, _v2.positionScreen, _v3.positionScreen ] );

+

+				renderFace3( _v1, _v2, _v3, 0, 1, 2, element, material );

+

+			} else if ( element instanceof THREE.RenderableFace4 ) {

+

+				_v1 = element.v1; _v2 = element.v2; _v3 = element.v3; _v4 = element.v4;

+

+				if ( _v1.positionScreen.z < -1 || _v1.positionScreen.z > 1 ) continue;

+				if ( _v2.positionScreen.z < -1 || _v2.positionScreen.z > 1 ) continue;

+				if ( _v3.positionScreen.z < -1 || _v3.positionScreen.z > 1 ) continue;

+				if ( _v4.positionScreen.z < -1 || _v4.positionScreen.z > 1 ) continue;

+

+				_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;

+				_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;

+				_v3.positionScreen.x *= _canvasWidthHalf; _v3.positionScreen.y *= _canvasHeightHalf;

+				_v4.positionScreen.x *= _canvasWidthHalf; _v4.positionScreen.y *= _canvasHeightHalf;

+

+				_v5.positionScreen.copy( _v2.positionScreen );

+				_v6.positionScreen.copy( _v4.positionScreen );

+

+				if ( material.overdraw === true ) {

+

+					expand( _v1.positionScreen, _v2.positionScreen );

+					expand( _v2.positionScreen, _v4.positionScreen );

+					expand( _v4.positionScreen, _v1.positionScreen );

+

+					expand( _v3.positionScreen, _v5.positionScreen );

+					expand( _v3.positionScreen, _v6.positionScreen );

+

+				}

+

+				_elemBox.setFromPoints( [ _v1.positionScreen, _v2.positionScreen, _v3.positionScreen, _v4.positionScreen ] );

+

+				renderFace4( _v1, _v2, _v3, _v4, _v5, _v6, element, material, scene );

+

+			}

+

+			/* DEBUG

+			setLineWidth( 1 );

+			setStrokeStyle( 'rgba( 0, 255, 0, 0.5 )' );

+			_context.strokeRect( _elemBox.min.x, _elemBox.min.y, _elemBox.max.x - _elemBox.min.x, _elemBox.max.y - _elemBox.min.y );

+			*/

+

+			_clearBox.union( _elemBox );

+

+		}

+

+		/* DEBUG

+		setLineWidth( 1 );

+		setStrokeStyle( 'rgba( 255, 0, 0, 0.5 )' );

+		_context.strokeRect( _clearBox.min.x, _clearBox.min.y, _clearBox.max.x - _clearBox.min.x, _clearBox.max.y - _clearBox.min.y );

+		*/

+

+		_context.setTransform( 1, 0, 0, 1, 0, 0 );

+

+		//

+

+		function calculateLights() {

+

+			_ambientLight.setRGB( 0, 0, 0 );

+			_directionalLights.setRGB( 0, 0, 0 );

+			_pointLights.setRGB( 0, 0, 0 );

+

+			for ( var l = 0, ll = _lights.length; l < ll; l ++ ) {

+

+				var light = _lights[ l ];

+				var lightColor = light.color;

+

+				if ( light instanceof THREE.AmbientLight ) {

+

+					_ambientLight.add( lightColor );

+

+				} else if ( light instanceof THREE.DirectionalLight ) {

+

+					// for particles

+

+					_directionalLights.add( lightColor );

+

+				} else if ( light instanceof THREE.PointLight ) {

+

+					// for particles

+

+					_pointLights.add( lightColor );

+

+				}

+

+			}

+

+		}

+

+		function calculateLight( position, normal, color ) {

+

+			for ( var l = 0, ll = _lights.length; l < ll; l ++ ) {

+

+				var light = _lights[ l ];

+

+				_lightColor.copy( light.color );

+

+				if ( light instanceof THREE.DirectionalLight ) {

+

+					var lightPosition = _vector3.getPositionFromMatrix( light.matrixWorld ).normalize();

+

+					var amount = normal.dot( lightPosition );

+

+					if ( amount <= 0 ) continue;

+

+					amount *= light.intensity;

+

+					color.add( _lightColor.multiplyScalar( amount ) );

+

+				} else if ( light instanceof THREE.PointLight ) {

+

+					var lightPosition = _vector3.getPositionFromMatrix( light.matrixWorld );

+

+					var amount = normal.dot( _vector3.subVectors( lightPosition, position ).normalize() );

+

+					if ( amount <= 0 ) continue;

+

+					amount *= light.distance == 0 ? 1 : 1 - Math.min( position.distanceTo( lightPosition ) / light.distance, 1 );

+

+					if ( amount == 0 ) continue;

+

+					amount *= light.intensity;

+

+					color.add( _lightColor.multiplyScalar( amount ) );

+

+				}

+

+			}

+

+		}

+

+		function renderParticle( v1, element, material ) {

+

+			setOpacity( material.opacity );

+			setBlending( material.blending );

+

+			var width, height, scaleX, scaleY,

+			bitmap, bitmapWidth, bitmapHeight;

+

+			if ( material instanceof THREE.ParticleBasicMaterial ) {

+

+				if ( material.map === null ) {

+

+					scaleX = element.object.scale.x;

+					scaleY = element.object.scale.y;

+

+					// TODO: Be able to disable this

+

+					scaleX *= element.scale.x * _canvasWidthHalf;

+					scaleY *= element.scale.y * _canvasHeightHalf;

+

+					_elemBox.min.set( v1.x - scaleX, v1.y - scaleY );

+					_elemBox.max.set( v1.x + scaleX, v1.y + scaleY );

+

+					if ( _clipBox.isIntersectionBox( _elemBox ) === false ) {

+

+						return;

+

+					}

+

+					setFillStyle( material.color.getStyle() );

+

+					_context.save();

+					_context.translate( v1.x, v1.y );

+					_context.rotate( - element.rotation );

+					_context.scale( scaleX, scaleY );

+					_context.fillRect( -1, -1, 2, 2 );

+					_context.restore();

+

+				} else {

+

+					bitmap = material.map.image;

+					bitmapWidth = bitmap.width >> 1;

+					bitmapHeight = bitmap.height >> 1;

+

+					scaleX = element.scale.x * _canvasWidthHalf;

+					scaleY = element.scale.y * _canvasHeightHalf;

+

+					width = scaleX * bitmapWidth;

+					height = scaleY * bitmapHeight;

+

+					// TODO: Rotations break this...

+

+					_elemBox.min.set( v1.x - width, v1.y - height );

+					_elemBox.max.set( v1.x + width, v1.y + height );

+

+					if ( _clipBox.isIntersectionBox( _elemBox ) === false ) {

+

+						return;

+

+					}

+

+					_context.save();

+					_context.translate( v1.x, v1.y );

+					_context.rotate( - element.rotation );

+					_context.scale( scaleX, - scaleY );

+

+					_context.translate( - bitmapWidth, - bitmapHeight );

+					_context.drawImage( bitmap, 0, 0 );

+					_context.restore();

+

+				}

+

+				/* DEBUG

+				setStrokeStyle( 'rgb(255,255,0)' );

+				_context.beginPath();

+				_context.moveTo( v1.x - 10, v1.y );

+				_context.lineTo( v1.x + 10, v1.y );

+				_context.moveTo( v1.x, v1.y - 10 );

+				_context.lineTo( v1.x, v1.y + 10 );

+				_context.stroke();

+				*/

+

+			} else if ( material instanceof THREE.ParticleCanvasMaterial ) {

+

+				width = element.scale.x * _canvasWidthHalf;

+				height = element.scale.y * _canvasHeightHalf;

+

+				_elemBox.min.set( v1.x - width, v1.y - height );

+				_elemBox.max.set( v1.x + width, v1.y + height );

+

+				if ( _clipBox.isIntersectionBox( _elemBox ) === false ) {

+

+					return;

+

+				}

+

+				setStrokeStyle( material.color.getStyle() );

+				setFillStyle( material.color.getStyle() );

+

+				_context.save();

+				_context.translate( v1.x, v1.y );

+				_context.rotate( - element.rotation );

+				_context.scale( width, height );

+

+				material.program( _context );

+

+				_context.restore();

+

+			}

+

+		}

+

+		function renderLine( v1, v2, element, material ) {

+

+			setOpacity( material.opacity );

+			setBlending( material.blending );

+

+			_context.beginPath();

+			_context.moveTo( v1.positionScreen.x, v1.positionScreen.y );

+			_context.lineTo( v2.positionScreen.x, v2.positionScreen.y );

+

+			if ( material instanceof THREE.LineBasicMaterial ) {

+

+				setLineWidth( material.linewidth );

+				setLineCap( material.linecap );

+				setLineJoin( material.linejoin );

+				setStrokeStyle( material.color.getStyle() );

+				setDashAndGap( null, null );

+

+				_context.stroke();

+				_elemBox.expandByScalar( material.linewidth * 2 );

+

+			} else if ( material instanceof THREE.LineDashedMaterial ) {

+

+				setLineWidth( material.linewidth );

+				setLineCap( material.linecap );

+				setLineJoin( material.linejoin );

+				setStrokeStyle( material.color.getStyle() );

+				setDashAndGap( material.dashSize, material.gapSize );

+

+				_context.stroke();

+				_elemBox.expandByScalar( material.linewidth * 2 );

+

+			}

+

+		}

+

+		function renderFace3( v1, v2, v3, uv1, uv2, uv3, element, material ) {

+

+			_this.info.render.vertices += 3;

+			_this.info.render.faces ++;

+

+			setOpacity( material.opacity );

+			setBlending( material.blending );

+

+			_v1x = v1.positionScreen.x; _v1y = v1.positionScreen.y;

+			_v2x = v2.positionScreen.x; _v2y = v2.positionScreen.y;

+			_v3x = v3.positionScreen.x; _v3y = v3.positionScreen.y;

+

+			drawTriangle( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y );

+

+			if ( ( material instanceof THREE.MeshLambertMaterial || material instanceof THREE.MeshPhongMaterial ) && material.map === null ) {

+

+				_diffuseColor.copy( material.color );

+				_emissiveColor.copy( material.emissive );

+

+				if ( material.vertexColors === THREE.FaceColors ) {

+

+					_diffuseColor.multiply( element.color );

+

+				}

+

+				if ( _enableLighting === true ) {

+

+					if ( material.wireframe === false && material.shading == THREE.SmoothShading && element.vertexNormalsLength == 3 ) {

+

+						_color1.copy( _ambientLight );

+						_color2.copy( _ambientLight );

+						_color3.copy( _ambientLight );

+

+						calculateLight( element.v1.positionWorld, element.vertexNormalsModel[ 0 ], _color1 );

+						calculateLight( element.v2.positionWorld, element.vertexNormalsModel[ 1 ], _color2 );

+						calculateLight( element.v3.positionWorld, element.vertexNormalsModel[ 2 ], _color3 );

+

+						_color1.multiply( _diffuseColor ).add( _emissiveColor );

+						_color2.multiply( _diffuseColor ).add( _emissiveColor );

+						_color3.multiply( _diffuseColor ).add( _emissiveColor );

+						_color4.addColors( _color2, _color3 ).multiplyScalar( 0.5 );

+

+						_image = getGradientTexture( _color1, _color2, _color3, _color4 );

+

+						clipImage( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, 0, 0, 1, 0, 0, 1, _image );

+

+					} else {

+

+						_color.copy( _ambientLight );

+

+						calculateLight( element.centroidModel, element.normalModel, _color );

+

+						_color.multiply( _diffuseColor ).add( _emissiveColor );

+

+						material.wireframe === true

+							? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+							: fillPath( _color );

+

+					}

+

+				} else {

+

+					material.wireframe === true

+						? strokePath( material.color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+						: fillPath( material.color );

+

+				}

+

+			} else if ( material instanceof THREE.MeshBasicMaterial || material instanceof THREE.MeshLambertMaterial || material instanceof THREE.MeshPhongMaterial ) {

+

+				if ( material.map !== null ) {

+

+					if ( material.map.mapping instanceof THREE.UVMapping ) {

+

+						_uvs = element.uvs[ 0 ];

+						patternPath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _uvs[ uv1 ].x, _uvs[ uv1 ].y, _uvs[ uv2 ].x, _uvs[ uv2 ].y, _uvs[ uv3 ].x, _uvs[ uv3 ].y, material.map );

+

+					}

+

+

+				} else if ( material.envMap !== null ) {

+

+					if ( material.envMap.mapping instanceof THREE.SphericalReflectionMapping ) {

+

+						_vector3.copy( element.vertexNormalsModelView[ uv1 ] );

+						_uv1x = 0.5 * _vector3.x + 0.5;

+						_uv1y = 0.5 * _vector3.y + 0.5;

+

+						_vector3.copy( element.vertexNormalsModelView[ uv2 ] );

+						_uv2x = 0.5 * _vector3.x + 0.5;

+						_uv2y = 0.5 * _vector3.y + 0.5;

+

+						_vector3.copy( element.vertexNormalsModelView[ uv3 ] );

+						_uv3x = 0.5 * _vector3.x + 0.5;

+						_uv3y = 0.5 * _vector3.y + 0.5;

+

+						patternPath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y, material.envMap );

+

+					}/* else if ( material.envMap.mapping == THREE.SphericalRefractionMapping ) {

+

+

+

+					}*/

+

+

+				} else {

+

+					_color.copy( material.color );

+

+					if ( material.vertexColors === THREE.FaceColors ) {

+

+						_color.multiply( element.color );

+

+					}

+

+					material.wireframe === true

+						? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+						: fillPath( _color );

+

+				}

+

+			} else if ( material instanceof THREE.MeshDepthMaterial ) {

+

+				_near = camera.near;

+				_far = camera.far;

+

+				_color1.r = _color1.g = _color1.b = 1 - smoothstep( v1.positionScreen.z * v1.positionScreen.w, _near, _far );

+				_color2.r = _color2.g = _color2.b = 1 - smoothstep( v2.positionScreen.z * v2.positionScreen.w, _near, _far );

+				_color3.r = _color3.g = _color3.b = 1 - smoothstep( v3.positionScreen.z * v3.positionScreen.w, _near, _far );

+				_color4.addColors( _color2, _color3 ).multiplyScalar( 0.5 );

+

+				_image = getGradientTexture( _color1, _color2, _color3, _color4 );

+

+				clipImage( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, 0, 0, 1, 0, 0, 1, _image );

+

+			} else if ( material instanceof THREE.MeshNormalMaterial ) {

+

+				var normal;

+

+				if ( material.shading == THREE.FlatShading ) {

+

+					normal = element.normalModelView;

+

+					_color.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					material.wireframe === true

+						? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+						: fillPath( _color );

+

+				} else if ( material.shading == THREE.SmoothShading ) {

+

+					normal = element.vertexNormalsModelView[ uv1 ];

+					_color1.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					normal = element.vertexNormalsModelView[ uv2 ];

+					_color2.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					normal = element.vertexNormalsModelView[ uv3 ];

+					_color3.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					_color4.addColors( _color2, _color3 ).multiplyScalar( 0.5 );

+

+					_image = getGradientTexture( _color1, _color2, _color3, _color4 );

+

+					clipImage( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, 0, 0, 1, 0, 0, 1, _image );

+

+				}

+

+			}

+

+		}

+

+		function renderFace4( v1, v2, v3, v4, v5, v6, element, material ) {

+

+			_this.info.render.vertices += 4;

+			_this.info.render.faces ++;

+

+			setOpacity( material.opacity );

+			setBlending( material.blending );

+

+			if ( ( material.map !== undefined && material.map !== null ) || ( material.envMap !== undefined && material.envMap !== null ) ) {

+

+				// Let renderFace3() handle this

+

+				renderFace3( v1, v2, v4, 0, 1, 3, element, material );

+				renderFace3( v5, v3, v6, 1, 2, 3, element, material );

+

+				return;

+

+			}

+

+			_v1x = v1.positionScreen.x; _v1y = v1.positionScreen.y;

+			_v2x = v2.positionScreen.x; _v2y = v2.positionScreen.y;

+			_v3x = v3.positionScreen.x; _v3y = v3.positionScreen.y;

+			_v4x = v4.positionScreen.x; _v4y = v4.positionScreen.y;

+			_v5x = v5.positionScreen.x; _v5y = v5.positionScreen.y;

+			_v6x = v6.positionScreen.x; _v6y = v6.positionScreen.y;

+

+			if ( material instanceof THREE.MeshLambertMaterial || material instanceof THREE.MeshPhongMaterial ) {

+

+				_diffuseColor.copy( material.color );

+				_emissiveColor.copy( material.emissive );

+

+				if ( material.vertexColors === THREE.FaceColors ) {

+

+					_diffuseColor.multiply( element.color );

+

+				}

+

+				if ( _enableLighting === true ) {

+

+					if ( material.wireframe === false && material.shading == THREE.SmoothShading && element.vertexNormalsLength == 4 ) {

+

+						_color1.copy( _ambientLight );

+						_color2.copy( _ambientLight );

+						_color3.copy( _ambientLight );

+						_color4.copy( _ambientLight );

+

+						calculateLight( element.v1.positionWorld, element.vertexNormalsModel[ 0 ], _color1 );

+						calculateLight( element.v2.positionWorld, element.vertexNormalsModel[ 1 ], _color2 );

+						calculateLight( element.v4.positionWorld, element.vertexNormalsModel[ 3 ], _color3 );

+						calculateLight( element.v3.positionWorld, element.vertexNormalsModel[ 2 ], _color4 );

+

+						_color1.multiply( _diffuseColor ).add( _emissiveColor );

+						_color2.multiply( _diffuseColor ).add( _emissiveColor );

+						_color3.multiply( _diffuseColor ).add( _emissiveColor );

+						_color4.multiply( _diffuseColor ).add( _emissiveColor );

+

+						_image = getGradientTexture( _color1, _color2, _color3, _color4 );

+

+						// TODO: UVs are incorrect, v4->v3?

+

+						drawTriangle( _v1x, _v1y, _v2x, _v2y, _v4x, _v4y );

+						clipImage( _v1x, _v1y, _v2x, _v2y, _v4x, _v4y, 0, 0, 1, 0, 0, 1, _image );

+

+						drawTriangle( _v5x, _v5y, _v3x, _v3y, _v6x, _v6y );

+						clipImage( _v5x, _v5y, _v3x, _v3y, _v6x, _v6y, 1, 0, 1, 1, 0, 1, _image );

+

+					} else {

+

+						_color.copy( _ambientLight );

+

+						calculateLight( element.centroidModel, element.normalModel, _color );

+

+						_color.multiply( _diffuseColor ).add( _emissiveColor );

+

+						drawQuad( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _v4x, _v4y );

+

+						material.wireframe === true

+							? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+							: fillPath( _color );

+

+					}

+

+				} else {

+

+					_color.addColors( _diffuseColor, _emissiveColor );

+

+					drawQuad( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _v4x, _v4y );

+

+					material.wireframe === true

+						? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+						: fillPath( _color );

+

+				}

+

+			} else if ( material instanceof THREE.MeshBasicMaterial ) {

+

+				_color.copy( material.color );

+

+				if ( material.vertexColors === THREE.FaceColors ) {

+

+					_color.multiply( element.color );

+

+				}

+

+				drawQuad( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _v4x, _v4y );

+

+				material.wireframe === true

+					? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+					: fillPath( _color );

+

+			} else if ( material instanceof THREE.MeshNormalMaterial ) {

+

+				var normal;

+

+				if ( material.shading == THREE.FlatShading ) {

+

+					normal = element.normalModelView;

+					_color.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					drawQuad( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _v4x, _v4y );

+

+					material.wireframe === true

+						? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )

+						: fillPath( _color );

+

+				} else if ( material.shading == THREE.SmoothShading ) {

+

+					normal = element.vertexNormalsModelView[ 0 ];

+					_color1.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					normal = element.vertexNormalsModelView[ 1 ];

+					_color2.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					normal = element.vertexNormalsModelView[ 3 ];

+					_color3.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					normal = element.vertexNormalsModelView[ 2 ];

+					_color4.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );

+

+					_image = getGradientTexture( _color1, _color2, _color3, _color4 );

+

+					drawTriangle( _v1x, _v1y, _v2x, _v2y, _v4x, _v4y );

+					clipImage( _v1x, _v1y, _v2x, _v2y, _v4x, _v4y, 0, 0, 1, 0, 0, 1, _image );

+

+					drawTriangle( _v5x, _v5y, _v3x, _v3y, _v6x, _v6y );

+					clipImage( _v5x, _v5y, _v3x, _v3y, _v6x, _v6y, 1, 0, 1, 1, 0, 1, _image );

+

+				}

+

+

+

+			} else if ( material instanceof THREE.MeshDepthMaterial ) {

+

+				_near = camera.near;

+				_far = camera.far;

+

+				_color1.r = _color1.g = _color1.b = 1 - smoothstep( v1.positionScreen.z * v1.positionScreen.w, _near, _far );

+				_color2.r = _color2.g = _color2.b = 1 - smoothstep( v2.positionScreen.z * v2.positionScreen.w, _near, _far );

+				_color3.r = _color3.g = _color3.b = 1 - smoothstep( v4.positionScreen.z * v4.positionScreen.w, _near, _far );

+				_color4.r = _color4.g = _color4.b = 1 - smoothstep( v3.positionScreen.z * v3.positionScreen.w, _near, _far );

+

+				_image = getGradientTexture( _color1, _color2, _color3, _color4 );

+

+				// TODO: UVs are incorrect, v4->v3?

+

+				drawTriangle( _v1x, _v1y, _v2x, _v2y, _v4x, _v4y );

+				clipImage( _v1x, _v1y, _v2x, _v2y, _v4x, _v4y, 0, 0, 1, 0, 0, 1, _image );

+

+				drawTriangle( _v5x, _v5y, _v3x, _v3y, _v6x, _v6y );

+				clipImage( _v5x, _v5y, _v3x, _v3y, _v6x, _v6y, 1, 0, 1, 1, 0, 1, _image );

+

+			}

+

+		}

+

+		//

+

+		function drawTriangle( x0, y0, x1, y1, x2, y2 ) {

+

+			_context.beginPath();

+			_context.moveTo( x0, y0 );

+			_context.lineTo( x1, y1 );

+			_context.lineTo( x2, y2 );

+			_context.closePath();

+

+		}

+

+		function drawQuad( x0, y0, x1, y1, x2, y2, x3, y3 ) {

+

+			_context.beginPath();

+			_context.moveTo( x0, y0 );

+			_context.lineTo( x1, y1 );

+			_context.lineTo( x2, y2 );

+			_context.lineTo( x3, y3 );

+			_context.closePath();

+

+		}

+

+		function strokePath( color, linewidth, linecap, linejoin ) {

+

+			setLineWidth( linewidth );

+			setLineCap( linecap );

+			setLineJoin( linejoin );

+			setStrokeStyle( color.getStyle() );

+

+			_context.stroke();

+

+			_elemBox.expandByScalar( linewidth * 2 );

+

+		}

+

+		function fillPath( color ) {

+

+			setFillStyle( color.getStyle() );

+			_context.fill();

+

+		}

+

+		function patternPath( x0, y0, x1, y1, x2, y2, u0, v0, u1, v1, u2, v2, texture ) {

+

+			if ( texture instanceof THREE.DataTexture || texture.image === undefined || texture.image.width == 0 ) return;

+

+			if ( texture.needsUpdate === true ) {

+

+				var repeatX = texture.wrapS == THREE.RepeatWrapping;

+				var repeatY = texture.wrapT == THREE.RepeatWrapping;

+

+				_patterns[ texture.id ] = _context.createPattern(

+					texture.image, repeatX === true && repeatY === true

+						? 'repeat'

+						: repeatX === true && repeatY === false

+							? 'repeat-x'

+							: repeatX === false && repeatY === true

+								? 'repeat-y'

+								: 'no-repeat'

+				);

+

+				texture.needsUpdate = false;

+

+			}

+

+			_patterns[ texture.id ] === undefined

+				? setFillStyle( 'rgba(0,0,0,1)' )

+				: setFillStyle( _patterns[ texture.id ] );

+

+			// http://extremelysatisfactorytotalitarianism.com/blog/?p=2120

+

+			var a, b, c, d, e, f, det, idet,

+			offsetX = texture.offset.x / texture.repeat.x,

+			offsetY = texture.offset.y / texture.repeat.y,

+			width = texture.image.width * texture.repeat.x,

+			height = texture.image.height * texture.repeat.y;

+

+			u0 = ( u0 + offsetX ) * width;

+			v0 = ( 1.0 - v0 + offsetY ) * height;

+

+			u1 = ( u1 + offsetX ) * width;

+			v1 = ( 1.0 - v1 + offsetY ) * height;

+

+			u2 = ( u2 + offsetX ) * width;

+			v2 = ( 1.0 - v2 + offsetY ) * height;

+

+			x1 -= x0; y1 -= y0;

+			x2 -= x0; y2 -= y0;

+

+			u1 -= u0; v1 -= v0;

+			u2 -= u0; v2 -= v0;

+

+			det = u1 * v2 - u2 * v1;

+

+			if ( det === 0 ) {

+

+				if ( _imagedatas[ texture.id ] === undefined ) {

+

+					var canvas = document.createElement( 'canvas' )

+					canvas.width = texture.image.width;

+					canvas.height = texture.image.height;

+

+					var context = canvas.getContext( '2d' );

+					context.drawImage( texture.image, 0, 0 );

+

+					_imagedatas[ texture.id ] = context.getImageData( 0, 0, texture.image.width, texture.image.height ).data;

+

+				}

+

+				var data = _imagedatas[ texture.id ];

+				var index = ( Math.floor( u0 ) + Math.floor( v0 ) * texture.image.width ) * 4;

+

+				_color.setRGB( data[ index ] / 255, data[ index + 1 ] / 255, data[ index + 2 ] / 255 );

+				fillPath( _color );

+

+				return;

+

+			}

+

+			idet = 1 / det;

+

+			a = ( v2 * x1 - v1 * x2 ) * idet;

+			b = ( v2 * y1 - v1 * y2 ) * idet;

+			c = ( u1 * x2 - u2 * x1 ) * idet;

+			d = ( u1 * y2 - u2 * y1 ) * idet;

+

+			e = x0 - a * u0 - c * v0;

+			f = y0 - b * u0 - d * v0;

+

+			_context.save();

+			_context.transform( a, b, c, d, e, f );

+			_context.fill();

+			_context.restore();

+

+		}

+

+		function clipImage( x0, y0, x1, y1, x2, y2, u0, v0, u1, v1, u2, v2, image ) {

+

+			// http://extremelysatisfactorytotalitarianism.com/blog/?p=2120

+

+			var a, b, c, d, e, f, det, idet,

+			width = image.width - 1,

+			height = image.height - 1;

+

+			u0 *= width; v0 *= height;

+			u1 *= width; v1 *= height;

+			u2 *= width; v2 *= height;

+

+			x1 -= x0; y1 -= y0;

+			x2 -= x0; y2 -= y0;

+

+			u1 -= u0; v1 -= v0;

+			u2 -= u0; v2 -= v0;

+

+			det = u1 * v2 - u2 * v1;

+

+			idet = 1 / det;

+

+			a = ( v2 * x1 - v1 * x2 ) * idet;

+			b = ( v2 * y1 - v1 * y2 ) * idet;

+			c = ( u1 * x2 - u2 * x1 ) * idet;

+			d = ( u1 * y2 - u2 * y1 ) * idet;

+

+			e = x0 - a * u0 - c * v0;

+			f = y0 - b * u0 - d * v0;

+

+			_context.save();

+			_context.transform( a, b, c, d, e, f );

+			_context.clip();

+			_context.drawImage( image, 0, 0 );

+			_context.restore();

+

+		}

+

+		function getGradientTexture( color1, color2, color3, color4 ) {

+

+			// http://mrdoob.com/blog/post/710

+

+			_pixelMapData[ 0 ] = ( color1.r * 255 ) | 0;

+			_pixelMapData[ 1 ] = ( color1.g * 255 ) | 0;

+			_pixelMapData[ 2 ] = ( color1.b * 255 ) | 0;

+

+			_pixelMapData[ 4 ] = ( color2.r * 255 ) | 0;

+			_pixelMapData[ 5 ] = ( color2.g * 255 ) | 0;

+			_pixelMapData[ 6 ] = ( color2.b * 255 ) | 0;

+

+			_pixelMapData[ 8 ] = ( color3.r * 255 ) | 0;

+			_pixelMapData[ 9 ] = ( color3.g * 255 ) | 0;

+			_pixelMapData[ 10 ] = ( color3.b * 255 ) | 0;

+

+			_pixelMapData[ 12 ] = ( color4.r * 255 ) | 0;

+			_pixelMapData[ 13 ] = ( color4.g * 255 ) | 0;

+			_pixelMapData[ 14 ] = ( color4.b * 255 ) | 0;

+

+			_pixelMapContext.putImageData( _pixelMapImage, 0, 0 );

+			_gradientMapContext.drawImage( _pixelMap, 0, 0 );

+

+			return _gradientMap;

+

+		}

+

+		// Hide anti-alias gaps

+

+		function expand( v1, v2 ) {

+

+			var x = v2.x - v1.x, y =  v2.y - v1.y,

+			det = x * x + y * y, idet;

+

+			if ( det === 0 ) return;

+

+			idet = 1 / Math.sqrt( det );

+

+			x *= idet; y *= idet;

+

+			v2.x += x; v2.y += y;

+			v1.x -= x; v1.y -= y;

+

+		}

+	};

+

+	// Context cached methods.

+

+	function setOpacity( value ) {

+

+		if ( _contextGlobalAlpha !== value ) {

+

+			_context.globalAlpha = value;

+			_contextGlobalAlpha = value;

+

+		}

+

+	}

+

+	function setBlending( value ) {

+

+		if ( _contextGlobalCompositeOperation !== value ) {

+

+			if ( value === THREE.NormalBlending ) {

+

+				_context.globalCompositeOperation = 'source-over';

+

+			} else if ( value === THREE.AdditiveBlending ) {

+

+				_context.globalCompositeOperation = 'lighter';

+

+			} else if ( value === THREE.SubtractiveBlending ) {

+

+				_context.globalCompositeOperation = 'darker';

+

+			}

+

+			_contextGlobalCompositeOperation = value;

+

+		}

+

+	}

+

+	function setLineWidth( value ) {

+

+		if ( _contextLineWidth !== value ) {

+

+			_context.lineWidth = value;

+			_contextLineWidth = value;

+

+		}

+

+	}

+

+	function setLineCap( value ) {

+

+		// "butt", "round", "square"

+

+		if ( _contextLineCap !== value ) {

+

+			_context.lineCap = value;

+			_contextLineCap = value;

+

+		}

+

+	}

+

+	function setLineJoin( value ) {

+

+		// "round", "bevel", "miter"

+

+		if ( _contextLineJoin !== value ) {

+

+			_context.lineJoin = value;

+			_contextLineJoin = value;

+

+		}

+

+	}

+

+	function setStrokeStyle( value ) {

+

+		if ( _contextStrokeStyle !== value ) {

+

+			_context.strokeStyle = value;

+			_contextStrokeStyle = value;

+

+		}

+

+	}

+

+	function setFillStyle( value ) {

+

+		if ( _contextFillStyle !== value ) {

+

+			_context.fillStyle = value;

+			_contextFillStyle = value;

+

+		}

+

+	}

+

+	function setDashAndGap( dashSizeValue, gapSizeValue ) {

+

+		if ( _contextDashSize !== dashSizeValue || _contextGapSize !== gapSizeValue ) {

+

+			_context.setLineDash( [ dashSizeValue, gapSizeValue ] );

+			_contextDashSize = dashSizeValue;

+			_contextGapSize = gapSizeValue;

+

+		}

+

+	}

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ * @author mrdoob / http://mrdoob.com/

+ * @author mikael emtinger / http://gomo.se/

+ */

+

+THREE.ShaderChunk = {

+

+	// FOG

+

+	fog_pars_fragment: [

+

+		"#ifdef USE_FOG",

+

+			"uniform vec3 fogColor;",

+

+			"#ifdef FOG_EXP2",

+

+				"uniform float fogDensity;",

+

+			"#else",

+

+				"uniform float fogNear;",

+				"uniform float fogFar;",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	fog_fragment: [

+

+		"#ifdef USE_FOG",

+

+			"float depth = gl_FragCoord.z / gl_FragCoord.w;",

+

+			"#ifdef FOG_EXP2",

+

+				"const float LOG2 = 1.442695;",

+				"float fogFactor = exp2( - fogDensity * fogDensity * depth * depth * LOG2 );",

+				"fogFactor = 1.0 - clamp( fogFactor, 0.0, 1.0 );",

+

+			"#else",

+

+				"float fogFactor = smoothstep( fogNear, fogFar, depth );",

+

+			"#endif",

+

+			"gl_FragColor = mix( gl_FragColor, vec4( fogColor, gl_FragColor.w ), fogFactor );",

+

+		"#endif"

+

+	].join("\n"),

+

+	// ENVIRONMENT MAP

+

+	envmap_pars_fragment: [

+

+		"#ifdef USE_ENVMAP",

+

+			"uniform float reflectivity;",

+			"uniform samplerCube envMap;",

+			"uniform float flipEnvMap;",

+			"uniform int combine;",

+

+			"#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )",

+

+				"uniform bool useRefract;",

+				"uniform float refractionRatio;",

+

+			"#else",

+

+				"varying vec3 vReflect;",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	envmap_fragment: [

+

+		"#ifdef USE_ENVMAP",

+

+			"vec3 reflectVec;",

+

+			"#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )",

+

+				"vec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );",

+

+				"if ( useRefract ) {",

+

+					"reflectVec = refract( cameraToVertex, normal, refractionRatio );",

+

+				"} else { ",

+

+					"reflectVec = reflect( cameraToVertex, normal );",

+

+				"}",

+

+			"#else",

+

+				"reflectVec = vReflect;",

+

+			"#endif",

+

+			"#ifdef DOUBLE_SIDED",

+

+				"float flipNormal = ( -1.0 + 2.0 * float( gl_FrontFacing ) );",

+				"vec4 cubeColor = textureCube( envMap, flipNormal * vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );",

+

+			"#else",

+

+				"vec4 cubeColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );",

+

+			"#endif",

+

+			"#ifdef GAMMA_INPUT",

+

+				"cubeColor.xyz *= cubeColor.xyz;",

+

+			"#endif",

+

+			"if ( combine == 1 ) {",

+

+				"gl_FragColor.xyz = mix( gl_FragColor.xyz, cubeColor.xyz, specularStrength * reflectivity );",

+

+			"} else if ( combine == 2 ) {",

+

+				"gl_FragColor.xyz += cubeColor.xyz * specularStrength * reflectivity;",

+

+			"} else {",

+

+				"gl_FragColor.xyz = mix( gl_FragColor.xyz, gl_FragColor.xyz * cubeColor.xyz, specularStrength * reflectivity );",

+

+			"}",

+

+		"#endif"

+

+	].join("\n"),

+

+	envmap_pars_vertex: [

+

+		"#if defined( USE_ENVMAP ) && ! defined( USE_BUMPMAP ) && ! defined( USE_NORMALMAP )",

+

+			"varying vec3 vReflect;",

+

+			"uniform float refractionRatio;",

+			"uniform bool useRefract;",

+

+		"#endif"

+

+	].join("\n"),

+

+	worldpos_vertex : [

+

+		"#if defined( USE_ENVMAP ) || defined( PHONG ) || defined( LAMBERT ) || defined ( USE_SHADOWMAP )",

+

+			"#ifdef USE_SKINNING",

+

+				"vec4 worldPosition = modelMatrix * skinned;",

+

+			"#endif",

+

+			"#if defined( USE_MORPHTARGETS ) && ! defined( USE_SKINNING )",

+

+				"vec4 worldPosition = modelMatrix * vec4( morphed, 1.0 );",

+

+			"#endif",

+

+			"#if ! defined( USE_MORPHTARGETS ) && ! defined( USE_SKINNING )",

+

+				"vec4 worldPosition = modelMatrix * vec4( position, 1.0 );",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	envmap_vertex : [

+

+		"#if defined( USE_ENVMAP ) && ! defined( USE_BUMPMAP ) && ! defined( USE_NORMALMAP )",

+

+			"vec3 worldNormal = mat3( modelMatrix[ 0 ].xyz, modelMatrix[ 1 ].xyz, modelMatrix[ 2 ].xyz ) * objectNormal;",

+			"worldNormal = normalize( worldNormal );",

+

+			"vec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );",

+

+			"if ( useRefract ) {",

+

+				"vReflect = refract( cameraToVertex, worldNormal, refractionRatio );",

+

+			"} else {",

+

+				"vReflect = reflect( cameraToVertex, worldNormal );",

+

+			"}",

+

+		"#endif"

+

+	].join("\n"),

+

+	// COLOR MAP (particles)

+

+	map_particle_pars_fragment: [

+

+		"#ifdef USE_MAP",

+

+			"uniform sampler2D map;",

+

+		"#endif"

+

+	].join("\n"),

+

+

+	map_particle_fragment: [

+

+		"#ifdef USE_MAP",

+

+			"gl_FragColor = gl_FragColor * texture2D( map, vec2( gl_PointCoord.x, 1.0 - gl_PointCoord.y ) );",

+

+		"#endif"

+

+	].join("\n"),

+

+	// COLOR MAP (triangles)

+

+	map_pars_vertex: [

+

+		"#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP )",

+

+			"varying vec2 vUv;",

+			"uniform vec4 offsetRepeat;",

+

+		"#endif"

+

+	].join("\n"),

+

+	map_pars_fragment: [

+

+		"#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP )",

+

+			"varying vec2 vUv;",

+

+		"#endif",

+

+		"#ifdef USE_MAP",

+

+			"uniform sampler2D map;",

+

+		"#endif"

+

+	].join("\n"),

+

+	map_vertex: [

+

+		"#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP )",

+

+			"vUv = uv * offsetRepeat.zw + offsetRepeat.xy;",

+

+		"#endif"

+

+	].join("\n"),

+

+	map_fragment: [

+

+		"#ifdef USE_MAP",

+

+			"vec4 texelColor = texture2D( map, vUv );",

+

+			"#ifdef GAMMA_INPUT",

+

+				"texelColor.xyz *= texelColor.xyz;",

+

+			"#endif",

+

+			"gl_FragColor = gl_FragColor * texelColor;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// LIGHT MAP

+

+	lightmap_pars_fragment: [

+

+		"#ifdef USE_LIGHTMAP",

+

+			"varying vec2 vUv2;",

+			"uniform sampler2D lightMap;",

+

+		"#endif"

+

+	].join("\n"),

+

+	lightmap_pars_vertex: [

+

+		"#ifdef USE_LIGHTMAP",

+

+			"varying vec2 vUv2;",

+

+		"#endif"

+

+	].join("\n"),

+

+	lightmap_fragment: [

+

+		"#ifdef USE_LIGHTMAP",

+

+			"gl_FragColor = gl_FragColor * texture2D( lightMap, vUv2 );",

+

+		"#endif"

+

+	].join("\n"),

+

+	lightmap_vertex: [

+

+		"#ifdef USE_LIGHTMAP",

+

+			"vUv2 = uv2;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// BUMP MAP

+

+	bumpmap_pars_fragment: [

+

+		"#ifdef USE_BUMPMAP",

+

+			"uniform sampler2D bumpMap;",

+			"uniform float bumpScale;",

+

+			// Derivative maps - bump mapping unparametrized surfaces by Morten Mikkelsen

+			//	http://mmikkelsen3d.blogspot.sk/2011/07/derivative-maps.html

+

+			// Evaluate the derivative of the height w.r.t. screen-space using forward differencing (listing 2)

+

+			"vec2 dHdxy_fwd() {",

+

+				"vec2 dSTdx = dFdx( vUv );",

+				"vec2 dSTdy = dFdy( vUv );",

+

+				"float Hll = bumpScale * texture2D( bumpMap, vUv ).x;",

+				"float dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;",

+				"float dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;",

+

+				"return vec2( dBx, dBy );",

+

+			"}",

+

+			"vec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {",

+

+				"vec3 vSigmaX = dFdx( surf_pos );",

+				"vec3 vSigmaY = dFdy( surf_pos );",

+				"vec3 vN = surf_norm;",		// normalized

+

+				"vec3 R1 = cross( vSigmaY, vN );",

+				"vec3 R2 = cross( vN, vSigmaX );",

+

+				"float fDet = dot( vSigmaX, R1 );",

+

+				"vec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );",

+				"return normalize( abs( fDet ) * surf_norm - vGrad );",

+

+			"}",

+

+		"#endif"

+

+	].join("\n"),

+

+	// NORMAL MAP

+

+	normalmap_pars_fragment: [

+

+		"#ifdef USE_NORMALMAP",

+

+			"uniform sampler2D normalMap;",

+			"uniform vec2 normalScale;",

+

+			// Per-Pixel Tangent Space Normal Mapping

+			// http://hacksoflife.blogspot.ch/2009/11/per-pixel-tangent-space-normal-mapping.html

+

+			"vec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm ) {",

+

+				"vec3 q0 = dFdx( eye_pos.xyz );",

+				"vec3 q1 = dFdy( eye_pos.xyz );",

+				"vec2 st0 = dFdx( vUv.st );",

+				"vec2 st1 = dFdy( vUv.st );",

+

+				"vec3 S = normalize(  q0 * st1.t - q1 * st0.t );",

+				"vec3 T = normalize( -q0 * st1.s + q1 * st0.s );",

+				"vec3 N = normalize( surf_norm );",

+

+				"vec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;",

+				"mapN.xy = normalScale * mapN.xy;",

+				"mat3 tsn = mat3( S, T, N );",

+				"return normalize( tsn * mapN );",

+

+			"}",

+

+		"#endif"

+

+	].join("\n"),

+

+	// SPECULAR MAP

+

+	specularmap_pars_fragment: [

+

+		"#ifdef USE_SPECULARMAP",

+

+			"uniform sampler2D specularMap;",

+

+		"#endif"

+

+	].join("\n"),

+

+	specularmap_fragment: [

+

+		"float specularStrength;",

+

+		"#ifdef USE_SPECULARMAP",

+

+			"vec4 texelSpecular = texture2D( specularMap, vUv );",

+			"specularStrength = texelSpecular.r;",

+

+		"#else",

+

+			"specularStrength = 1.0;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// LIGHTS LAMBERT

+

+	lights_lambert_pars_vertex: [

+

+		"uniform vec3 ambient;",

+		"uniform vec3 diffuse;",

+		"uniform vec3 emissive;",

+

+		"uniform vec3 ambientLightColor;",

+

+		"#if MAX_DIR_LIGHTS > 0",

+

+			"uniform vec3 directionalLightColor[ MAX_DIR_LIGHTS ];",

+			"uniform vec3 directionalLightDirection[ MAX_DIR_LIGHTS ];",

+

+		"#endif",

+

+		"#if MAX_HEMI_LIGHTS > 0",

+

+			"uniform vec3 hemisphereLightSkyColor[ MAX_HEMI_LIGHTS ];",

+			"uniform vec3 hemisphereLightGroundColor[ MAX_HEMI_LIGHTS ];",

+			"uniform vec3 hemisphereLightDirection[ MAX_HEMI_LIGHTS ];",

+

+		"#endif",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"uniform vec3 pointLightColor[ MAX_POINT_LIGHTS ];",

+			"uniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];",

+			"uniform float pointLightDistance[ MAX_POINT_LIGHTS ];",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"uniform vec3 spotLightColor[ MAX_SPOT_LIGHTS ];",

+			"uniform vec3 spotLightPosition[ MAX_SPOT_LIGHTS ];",

+			"uniform vec3 spotLightDirection[ MAX_SPOT_LIGHTS ];",

+			"uniform float spotLightDistance[ MAX_SPOT_LIGHTS ];",

+			"uniform float spotLightAngleCos[ MAX_SPOT_LIGHTS ];",

+			"uniform float spotLightExponent[ MAX_SPOT_LIGHTS ];",

+

+		"#endif",

+

+		"#ifdef WRAP_AROUND",

+

+			"uniform vec3 wrapRGB;",

+

+		"#endif"

+

+	].join("\n"),

+

+	lights_lambert_vertex: [

+

+		"vLightFront = vec3( 0.0 );",

+

+		"#ifdef DOUBLE_SIDED",

+

+			"vLightBack = vec3( 0.0 );",

+

+		"#endif",

+

+		"transformedNormal = normalize( transformedNormal );",

+

+		"#if MAX_DIR_LIGHTS > 0",

+

+		"for( int i = 0; i < MAX_DIR_LIGHTS; i ++ ) {",

+

+			"vec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );",

+			"vec3 dirVector = normalize( lDirection.xyz );",

+

+			"float dotProduct = dot( transformedNormal, dirVector );",

+			"vec3 directionalLightWeighting = vec3( max( dotProduct, 0.0 ) );",

+

+			"#ifdef DOUBLE_SIDED",

+

+				"vec3 directionalLightWeightingBack = vec3( max( -dotProduct, 0.0 ) );",

+

+				"#ifdef WRAP_AROUND",

+

+					"vec3 directionalLightWeightingHalfBack = vec3( max( -0.5 * dotProduct + 0.5, 0.0 ) );",

+

+				"#endif",

+

+			"#endif",

+

+			"#ifdef WRAP_AROUND",

+

+				"vec3 directionalLightWeightingHalf = vec3( max( 0.5 * dotProduct + 0.5, 0.0 ) );",

+				"directionalLightWeighting = mix( directionalLightWeighting, directionalLightWeightingHalf, wrapRGB );",

+

+				"#ifdef DOUBLE_SIDED",

+

+					"directionalLightWeightingBack = mix( directionalLightWeightingBack, directionalLightWeightingHalfBack, wrapRGB );",

+

+				"#endif",

+

+			"#endif",

+

+			"vLightFront += directionalLightColor[ i ] * directionalLightWeighting;",

+

+			"#ifdef DOUBLE_SIDED",

+

+				"vLightBack += directionalLightColor[ i ] * directionalLightWeightingBack;",

+

+			"#endif",

+

+		"}",

+

+		"#endif",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"for( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {",

+

+				"vec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );",

+				"vec3 lVector = lPosition.xyz - mvPosition.xyz;",

+

+				"float lDistance = 1.0;",

+				"if ( pointLightDistance[ i ] > 0.0 )",

+					"lDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );",

+

+				"lVector = normalize( lVector );",

+				"float dotProduct = dot( transformedNormal, lVector );",

+

+				"vec3 pointLightWeighting = vec3( max( dotProduct, 0.0 ) );",

+

+				"#ifdef DOUBLE_SIDED",

+

+					"vec3 pointLightWeightingBack = vec3( max( -dotProduct, 0.0 ) );",

+

+					"#ifdef WRAP_AROUND",

+

+						"vec3 pointLightWeightingHalfBack = vec3( max( -0.5 * dotProduct + 0.5, 0.0 ) );",

+

+					"#endif",

+

+				"#endif",

+

+				"#ifdef WRAP_AROUND",

+

+					"vec3 pointLightWeightingHalf = vec3( max( 0.5 * dotProduct + 0.5, 0.0 ) );",

+					"pointLightWeighting = mix( pointLightWeighting, pointLightWeightingHalf, wrapRGB );",

+

+					"#ifdef DOUBLE_SIDED",

+

+						"pointLightWeightingBack = mix( pointLightWeightingBack, pointLightWeightingHalfBack, wrapRGB );",

+

+					"#endif",

+

+				"#endif",

+

+				"vLightFront += pointLightColor[ i ] * pointLightWeighting * lDistance;",

+

+				"#ifdef DOUBLE_SIDED",

+

+					"vLightBack += pointLightColor[ i ] * pointLightWeightingBack * lDistance;",

+

+				"#endif",

+

+			"}",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"for( int i = 0; i < MAX_SPOT_LIGHTS; i ++ ) {",

+

+				"vec4 lPosition = viewMatrix * vec4( spotLightPosition[ i ], 1.0 );",

+				"vec3 lVector = lPosition.xyz - mvPosition.xyz;",

+

+				"float spotEffect = dot( spotLightDirection[ i ], normalize( spotLightPosition[ i ] - worldPosition.xyz ) );",

+

+				"if ( spotEffect > spotLightAngleCos[ i ] ) {",

+

+					"spotEffect = max( pow( spotEffect, spotLightExponent[ i ] ), 0.0 );",

+

+					"float lDistance = 1.0;",

+					"if ( spotLightDistance[ i ] > 0.0 )",

+						"lDistance = 1.0 - min( ( length( lVector ) / spotLightDistance[ i ] ), 1.0 );",

+

+					"lVector = normalize( lVector );",

+

+					"float dotProduct = dot( transformedNormal, lVector );",

+					"vec3 spotLightWeighting = vec3( max( dotProduct, 0.0 ) );",

+

+					"#ifdef DOUBLE_SIDED",

+

+						"vec3 spotLightWeightingBack = vec3( max( -dotProduct, 0.0 ) );",

+

+						"#ifdef WRAP_AROUND",

+

+							"vec3 spotLightWeightingHalfBack = vec3( max( -0.5 * dotProduct + 0.5, 0.0 ) );",

+

+						"#endif",

+

+					"#endif",

+

+					"#ifdef WRAP_AROUND",

+

+						"vec3 spotLightWeightingHalf = vec3( max( 0.5 * dotProduct + 0.5, 0.0 ) );",

+						"spotLightWeighting = mix( spotLightWeighting, spotLightWeightingHalf, wrapRGB );",

+

+						"#ifdef DOUBLE_SIDED",

+

+							"spotLightWeightingBack = mix( spotLightWeightingBack, spotLightWeightingHalfBack, wrapRGB );",

+

+						"#endif",

+

+					"#endif",

+

+					"vLightFront += spotLightColor[ i ] * spotLightWeighting * lDistance * spotEffect;",

+

+					"#ifdef DOUBLE_SIDED",

+

+						"vLightBack += spotLightColor[ i ] * spotLightWeightingBack * lDistance * spotEffect;",

+

+					"#endif",

+

+				"}",

+

+			"}",

+

+		"#endif",

+

+		"#if MAX_HEMI_LIGHTS > 0",

+

+			"for( int i = 0; i < MAX_HEMI_LIGHTS; i ++ ) {",

+

+				"vec4 lDirection = viewMatrix * vec4( hemisphereLightDirection[ i ], 0.0 );",

+				"vec3 lVector = normalize( lDirection.xyz );",

+

+				"float dotProduct = dot( transformedNormal, lVector );",

+

+				"float hemiDiffuseWeight = 0.5 * dotProduct + 0.5;",

+				"float hemiDiffuseWeightBack = -0.5 * dotProduct + 0.5;",

+

+				"vLightFront += mix( hemisphereLightGroundColor[ i ], hemisphereLightSkyColor[ i ], hemiDiffuseWeight );",

+

+				"#ifdef DOUBLE_SIDED",

+

+					"vLightBack += mix( hemisphereLightGroundColor[ i ], hemisphereLightSkyColor[ i ], hemiDiffuseWeightBack );",

+

+				"#endif",

+

+			"}",

+

+		"#endif",

+

+		"vLightFront = vLightFront * diffuse + ambient * ambientLightColor + emissive;",

+

+		"#ifdef DOUBLE_SIDED",

+

+			"vLightBack = vLightBack * diffuse + ambient * ambientLightColor + emissive;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// LIGHTS PHONG

+

+	lights_phong_pars_vertex: [

+

+		"#ifndef PHONG_PER_PIXEL",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"uniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];",

+			"uniform float pointLightDistance[ MAX_POINT_LIGHTS ];",

+

+			"varying vec4 vPointLight[ MAX_POINT_LIGHTS ];",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"uniform vec3 spotLightPosition[ MAX_SPOT_LIGHTS ];",

+			"uniform float spotLightDistance[ MAX_SPOT_LIGHTS ];",

+

+			"varying vec4 vSpotLight[ MAX_SPOT_LIGHTS ];",

+

+		"#endif",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0 || defined( USE_BUMPMAP )",

+

+			"varying vec3 vWorldPosition;",

+

+		"#endif"

+

+	].join("\n"),

+

+

+	lights_phong_vertex: [

+

+		"#ifndef PHONG_PER_PIXEL",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"for( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {",

+

+				"vec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );",

+				"vec3 lVector = lPosition.xyz - mvPosition.xyz;",

+

+				"float lDistance = 1.0;",

+				"if ( pointLightDistance[ i ] > 0.0 )",

+					"lDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );",

+

+				"vPointLight[ i ] = vec4( lVector, lDistance );",

+

+			"}",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"for( int i = 0; i < MAX_SPOT_LIGHTS; i ++ ) {",

+

+				"vec4 lPosition = viewMatrix * vec4( spotLightPosition[ i ], 1.0 );",

+				"vec3 lVector = lPosition.xyz - mvPosition.xyz;",

+

+				"float lDistance = 1.0;",

+				"if ( spotLightDistance[ i ] > 0.0 )",

+					"lDistance = 1.0 - min( ( length( lVector ) / spotLightDistance[ i ] ), 1.0 );",

+

+				"vSpotLight[ i ] = vec4( lVector, lDistance );",

+

+			"}",

+

+		"#endif",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0 || defined( USE_BUMPMAP )",

+

+			"vWorldPosition = worldPosition.xyz;",

+

+		"#endif"

+

+	].join("\n"),

+

+	lights_phong_pars_fragment: [

+

+		"uniform vec3 ambientLightColor;",

+

+		"#if MAX_DIR_LIGHTS > 0",

+

+			"uniform vec3 directionalLightColor[ MAX_DIR_LIGHTS ];",

+			"uniform vec3 directionalLightDirection[ MAX_DIR_LIGHTS ];",

+

+		"#endif",

+

+		"#if MAX_HEMI_LIGHTS > 0",

+

+			"uniform vec3 hemisphereLightSkyColor[ MAX_HEMI_LIGHTS ];",

+			"uniform vec3 hemisphereLightGroundColor[ MAX_HEMI_LIGHTS ];",

+			"uniform vec3 hemisphereLightDirection[ MAX_HEMI_LIGHTS ];",

+

+		"#endif",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"uniform vec3 pointLightColor[ MAX_POINT_LIGHTS ];",

+

+			"#ifdef PHONG_PER_PIXEL",

+

+				"uniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];",

+				"uniform float pointLightDistance[ MAX_POINT_LIGHTS ];",

+

+			"#else",

+

+				"varying vec4 vPointLight[ MAX_POINT_LIGHTS ];",

+

+			"#endif",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"uniform vec3 spotLightColor[ MAX_SPOT_LIGHTS ];",

+			"uniform vec3 spotLightPosition[ MAX_SPOT_LIGHTS ];",

+			"uniform vec3 spotLightDirection[ MAX_SPOT_LIGHTS ];",

+			"uniform float spotLightAngleCos[ MAX_SPOT_LIGHTS ];",

+			"uniform float spotLightExponent[ MAX_SPOT_LIGHTS ];",

+

+			"#ifdef PHONG_PER_PIXEL",

+

+				"uniform float spotLightDistance[ MAX_SPOT_LIGHTS ];",

+

+			"#else",

+

+				"varying vec4 vSpotLight[ MAX_SPOT_LIGHTS ];",

+

+			"#endif",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0 || defined( USE_BUMPMAP )",

+

+			"varying vec3 vWorldPosition;",

+

+		"#endif",

+

+		"#ifdef WRAP_AROUND",

+

+			"uniform vec3 wrapRGB;",

+

+		"#endif",

+

+		"varying vec3 vViewPosition;",

+		"varying vec3 vNormal;"

+

+	].join("\n"),

+

+	lights_phong_fragment: [

+

+		"vec3 normal = normalize( vNormal );",

+		"vec3 viewPosition = normalize( vViewPosition );",

+

+		"#ifdef DOUBLE_SIDED",

+

+			"normal = normal * ( -1.0 + 2.0 * float( gl_FrontFacing ) );",

+

+		"#endif",

+

+		"#ifdef USE_NORMALMAP",

+

+			"normal = perturbNormal2Arb( -viewPosition, normal );",

+

+		"#elif defined( USE_BUMPMAP )",

+

+			"normal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );",

+

+		"#endif",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"vec3 pointDiffuse  = vec3( 0.0 );",

+			"vec3 pointSpecular = vec3( 0.0 );",

+

+			"for ( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {",

+

+				"#ifdef PHONG_PER_PIXEL",

+

+					"vec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );",

+					"vec3 lVector = lPosition.xyz + vViewPosition.xyz;",

+

+					"float lDistance = 1.0;",

+					"if ( pointLightDistance[ i ] > 0.0 )",

+						"lDistance = 1.0 - min( ( length( lVector ) / pointLightDistance[ i ] ), 1.0 );",

+

+					"lVector = normalize( lVector );",

+

+				"#else",

+

+					"vec3 lVector = normalize( vPointLight[ i ].xyz );",

+					"float lDistance = vPointLight[ i ].w;",

+

+				"#endif",

+

+				// diffuse

+

+				"float dotProduct = dot( normal, lVector );",

+

+				"#ifdef WRAP_AROUND",

+

+					"float pointDiffuseWeightFull = max( dotProduct, 0.0 );",

+					"float pointDiffuseWeightHalf = max( 0.5 * dotProduct + 0.5, 0.0 );",

+

+					"vec3 pointDiffuseWeight = mix( vec3 ( pointDiffuseWeightFull ), vec3( pointDiffuseWeightHalf ), wrapRGB );",

+

+				"#else",

+

+					"float pointDiffuseWeight = max( dotProduct, 0.0 );",

+

+				"#endif",

+

+				"pointDiffuse  += diffuse * pointLightColor[ i ] * pointDiffuseWeight * lDistance;",

+

+				// specular

+

+				"vec3 pointHalfVector = normalize( lVector + viewPosition );",

+				"float pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );",

+				"float pointSpecularWeight = specularStrength * max( pow( pointDotNormalHalf, shininess ), 0.0 );",

+

+				"#ifdef PHYSICALLY_BASED_SHADING",

+

+					// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+					"float specularNormalization = ( shininess + 2.0001 ) / 8.0;",

+

+					"vec3 schlick = specular + vec3( 1.0 - specular ) * pow( 1.0 - dot( lVector, pointHalfVector ), 5.0 );",

+					"pointSpecular += schlick * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * lDistance * specularNormalization;",

+

+				"#else",

+

+					"pointSpecular += specular * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * lDistance;",

+

+				"#endif",

+

+			"}",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"vec3 spotDiffuse  = vec3( 0.0 );",

+			"vec3 spotSpecular = vec3( 0.0 );",

+

+			"for ( int i = 0; i < MAX_SPOT_LIGHTS; i ++ ) {",

+

+				"#ifdef PHONG_PER_PIXEL",

+

+					"vec4 lPosition = viewMatrix * vec4( spotLightPosition[ i ], 1.0 );",

+					"vec3 lVector = lPosition.xyz + vViewPosition.xyz;",

+

+					"float lDistance = 1.0;",

+					"if ( spotLightDistance[ i ] > 0.0 )",

+						"lDistance = 1.0 - min( ( length( lVector ) / spotLightDistance[ i ] ), 1.0 );",

+

+					"lVector = normalize( lVector );",

+

+				"#else",

+

+					"vec3 lVector = normalize( vSpotLight[ i ].xyz );",

+					"float lDistance = vSpotLight[ i ].w;",

+

+				"#endif",

+

+				"float spotEffect = dot( spotLightDirection[ i ], normalize( spotLightPosition[ i ] - vWorldPosition ) );",

+

+				"if ( spotEffect > spotLightAngleCos[ i ] ) {",

+

+					"spotEffect = max( pow( spotEffect, spotLightExponent[ i ] ), 0.0 );",

+

+					// diffuse

+

+					"float dotProduct = dot( normal, lVector );",

+

+					"#ifdef WRAP_AROUND",

+

+						"float spotDiffuseWeightFull = max( dotProduct, 0.0 );",

+						"float spotDiffuseWeightHalf = max( 0.5 * dotProduct + 0.5, 0.0 );",

+

+						"vec3 spotDiffuseWeight = mix( vec3 ( spotDiffuseWeightFull ), vec3( spotDiffuseWeightHalf ), wrapRGB );",

+

+					"#else",

+

+						"float spotDiffuseWeight = max( dotProduct, 0.0 );",

+

+					"#endif",

+

+					"spotDiffuse += diffuse * spotLightColor[ i ] * spotDiffuseWeight * lDistance * spotEffect;",

+

+					// specular

+

+					"vec3 spotHalfVector = normalize( lVector + viewPosition );",

+					"float spotDotNormalHalf = max( dot( normal, spotHalfVector ), 0.0 );",

+					"float spotSpecularWeight = specularStrength * max( pow( spotDotNormalHalf, shininess ), 0.0 );",

+

+					"#ifdef PHYSICALLY_BASED_SHADING",

+

+						// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+						"float specularNormalization = ( shininess + 2.0001 ) / 8.0;",

+

+						"vec3 schlick = specular + vec3( 1.0 - specular ) * pow( 1.0 - dot( lVector, spotHalfVector ), 5.0 );",

+						"spotSpecular += schlick * spotLightColor[ i ] * spotSpecularWeight * spotDiffuseWeight * lDistance * specularNormalization * spotEffect;",

+

+					"#else",

+

+						"spotSpecular += specular * spotLightColor[ i ] * spotSpecularWeight * spotDiffuseWeight * lDistance * spotEffect;",

+

+					"#endif",

+

+				"}",

+

+			"}",

+

+		"#endif",

+

+		"#if MAX_DIR_LIGHTS > 0",

+

+			"vec3 dirDiffuse  = vec3( 0.0 );",

+			"vec3 dirSpecular = vec3( 0.0 );" ,

+

+			"for( int i = 0; i < MAX_DIR_LIGHTS; i ++ ) {",

+

+				"vec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );",

+				"vec3 dirVector = normalize( lDirection.xyz );",

+

+				// diffuse

+

+				"float dotProduct = dot( normal, dirVector );",

+

+				"#ifdef WRAP_AROUND",

+

+					"float dirDiffuseWeightFull = max( dotProduct, 0.0 );",

+					"float dirDiffuseWeightHalf = max( 0.5 * dotProduct + 0.5, 0.0 );",

+

+					"vec3 dirDiffuseWeight = mix( vec3( dirDiffuseWeightFull ), vec3( dirDiffuseWeightHalf ), wrapRGB );",

+

+				"#else",

+

+					"float dirDiffuseWeight = max( dotProduct, 0.0 );",

+

+				"#endif",

+

+				"dirDiffuse  += diffuse * directionalLightColor[ i ] * dirDiffuseWeight;",

+

+				// specular

+

+				"vec3 dirHalfVector = normalize( dirVector + viewPosition );",

+				"float dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );",

+				"float dirSpecularWeight = specularStrength * max( pow( dirDotNormalHalf, shininess ), 0.0 );",

+

+				"#ifdef PHYSICALLY_BASED_SHADING",

+

+					/*

+					// fresnel term from skin shader

+					"const float F0 = 0.128;",

+

+					"float base = 1.0 - dot( viewPosition, dirHalfVector );",

+					"float exponential = pow( base, 5.0 );",

+

+					"float fresnel = exponential + F0 * ( 1.0 - exponential );",

+					*/

+

+					/*

+					// fresnel term from fresnel shader

+					"const float mFresnelBias = 0.08;",

+					"const float mFresnelScale = 0.3;",

+					"const float mFresnelPower = 5.0;",

+

+					"float fresnel = mFresnelBias + mFresnelScale * pow( 1.0 + dot( normalize( -viewPosition ), normal ), mFresnelPower );",

+					*/

+

+					// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+					"float specularNormalization = ( shininess + 2.0001 ) / 8.0;",

+

+					//"dirSpecular += specular * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight * specularNormalization * fresnel;",

+

+					"vec3 schlick = specular + vec3( 1.0 - specular ) * pow( 1.0 - dot( dirVector, dirHalfVector ), 5.0 );",

+					"dirSpecular += schlick * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight * specularNormalization;",

+

+				"#else",

+

+					"dirSpecular += specular * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight;",

+

+				"#endif",

+

+			"}",

+

+		"#endif",

+

+		"#if MAX_HEMI_LIGHTS > 0",

+

+			"vec3 hemiDiffuse  = vec3( 0.0 );",

+			"vec3 hemiSpecular = vec3( 0.0 );" ,

+

+			"for( int i = 0; i < MAX_HEMI_LIGHTS; i ++ ) {",

+

+				"vec4 lDirection = viewMatrix * vec4( hemisphereLightDirection[ i ], 0.0 );",

+				"vec3 lVector = normalize( lDirection.xyz );",

+

+				// diffuse

+

+				"float dotProduct = dot( normal, lVector );",

+				"float hemiDiffuseWeight = 0.5 * dotProduct + 0.5;",

+

+				"vec3 hemiColor = mix( hemisphereLightGroundColor[ i ], hemisphereLightSkyColor[ i ], hemiDiffuseWeight );",

+

+				"hemiDiffuse += diffuse * hemiColor;",

+

+				// specular (sky light)

+

+				"vec3 hemiHalfVectorSky = normalize( lVector + viewPosition );",

+				"float hemiDotNormalHalfSky = 0.5 * dot( normal, hemiHalfVectorSky ) + 0.5;",

+				"float hemiSpecularWeightSky = specularStrength * max( pow( hemiDotNormalHalfSky, shininess ), 0.0 );",

+

+				// specular (ground light)

+

+				"vec3 lVectorGround = -lVector;",

+

+				"vec3 hemiHalfVectorGround = normalize( lVectorGround + viewPosition );",

+				"float hemiDotNormalHalfGround = 0.5 * dot( normal, hemiHalfVectorGround ) + 0.5;",

+				"float hemiSpecularWeightGround = specularStrength * max( pow( hemiDotNormalHalfGround, shininess ), 0.0 );",

+

+				"#ifdef PHYSICALLY_BASED_SHADING",

+

+					"float dotProductGround = dot( normal, lVectorGround );",

+

+					// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+					"float specularNormalization = ( shininess + 2.0001 ) / 8.0;",

+

+					"vec3 schlickSky = specular + vec3( 1.0 - specular ) * pow( 1.0 - dot( lVector, hemiHalfVectorSky ), 5.0 );",

+					"vec3 schlickGround = specular + vec3( 1.0 - specular ) * pow( 1.0 - dot( lVectorGround, hemiHalfVectorGround ), 5.0 );",

+					"hemiSpecular += hemiColor * specularNormalization * ( schlickSky * hemiSpecularWeightSky * max( dotProduct, 0.0 ) + schlickGround * hemiSpecularWeightGround * max( dotProductGround, 0.0 ) );",

+

+				"#else",

+

+					"hemiSpecular += specular * hemiColor * ( hemiSpecularWeightSky + hemiSpecularWeightGround ) * hemiDiffuseWeight;",

+

+				"#endif",

+

+			"}",

+

+		"#endif",

+

+		"vec3 totalDiffuse = vec3( 0.0 );",

+		"vec3 totalSpecular = vec3( 0.0 );",

+

+		"#if MAX_DIR_LIGHTS > 0",

+

+			"totalDiffuse += dirDiffuse;",

+			"totalSpecular += dirSpecular;",

+

+		"#endif",

+

+		"#if MAX_HEMI_LIGHTS > 0",

+

+			"totalDiffuse += hemiDiffuse;",

+			"totalSpecular += hemiSpecular;",

+

+		"#endif",

+

+		"#if MAX_POINT_LIGHTS > 0",

+

+			"totalDiffuse += pointDiffuse;",

+			"totalSpecular += pointSpecular;",

+

+		"#endif",

+

+		"#if MAX_SPOT_LIGHTS > 0",

+

+			"totalDiffuse += spotDiffuse;",

+			"totalSpecular += spotSpecular;",

+

+		"#endif",

+

+		"#ifdef METAL",

+

+			"gl_FragColor.xyz = gl_FragColor.xyz * ( emissive + totalDiffuse + ambientLightColor * ambient + totalSpecular );",

+

+		"#else",

+

+			"gl_FragColor.xyz = gl_FragColor.xyz * ( emissive + totalDiffuse + ambientLightColor * ambient ) + totalSpecular;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// VERTEX COLORS

+

+	color_pars_fragment: [

+

+		"#ifdef USE_COLOR",

+

+			"varying vec3 vColor;",

+

+		"#endif"

+

+	].join("\n"),

+

+

+	color_fragment: [

+

+		"#ifdef USE_COLOR",

+

+			"gl_FragColor = gl_FragColor * vec4( vColor, opacity );",

+

+		"#endif"

+

+	].join("\n"),

+

+	color_pars_vertex: [

+

+		"#ifdef USE_COLOR",

+

+			"varying vec3 vColor;",

+

+		"#endif"

+

+	].join("\n"),

+

+

+	color_vertex: [

+

+		"#ifdef USE_COLOR",

+

+			"#ifdef GAMMA_INPUT",

+

+				"vColor = color * color;",

+

+			"#else",

+

+				"vColor = color;",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	// SKINNING

+

+	skinning_pars_vertex: [

+

+		"#ifdef USE_SKINNING",

+

+			"#ifdef BONE_TEXTURE",

+

+				"uniform sampler2D boneTexture;",

+

+				"mat4 getBoneMatrix( const in float i ) {",

+

+					"float j = i * 4.0;",

+					"float x = mod( j, N_BONE_PIXEL_X );",

+					"float y = floor( j / N_BONE_PIXEL_X );",

+

+					"const float dx = 1.0 / N_BONE_PIXEL_X;",

+					"const float dy = 1.0 / N_BONE_PIXEL_Y;",

+

+					"y = dy * ( y + 0.5 );",

+

+					"vec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );",

+					"vec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );",

+					"vec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );",

+					"vec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );",

+

+					"mat4 bone = mat4( v1, v2, v3, v4 );",

+

+					"return bone;",

+

+				"}",

+

+			"#else",

+

+				"uniform mat4 boneGlobalMatrices[ MAX_BONES ];",

+

+				"mat4 getBoneMatrix( const in float i ) {",

+

+					"mat4 bone = boneGlobalMatrices[ int(i) ];",

+					"return bone;",

+

+				"}",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	skinbase_vertex: [

+

+		"#ifdef USE_SKINNING",

+

+			"mat4 boneMatX = getBoneMatrix( skinIndex.x );",

+			"mat4 boneMatY = getBoneMatrix( skinIndex.y );",

+

+		"#endif"

+

+	].join("\n"),

+

+	skinning_vertex: [

+

+		"#ifdef USE_SKINNING",

+

+			"#ifdef USE_MORPHTARGETS",

+

+			"vec4 skinVertex = vec4( morphed, 1.0 );",

+

+			"#else",

+

+			"vec4 skinVertex = vec4( position, 1.0 );",

+

+			"#endif",

+

+			"vec4 skinned  = boneMatX * skinVertex * skinWeight.x;",

+			"skinned 	  += boneMatY * skinVertex * skinWeight.y;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// MORPHING

+

+	morphtarget_pars_vertex: [

+

+		"#ifdef USE_MORPHTARGETS",

+

+			"#ifndef USE_MORPHNORMALS",

+

+			"uniform float morphTargetInfluences[ 8 ];",

+

+			"#else",

+

+			"uniform float morphTargetInfluences[ 4 ];",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	morphtarget_vertex: [

+

+		"#ifdef USE_MORPHTARGETS",

+

+			"vec3 morphed = vec3( 0.0 );",

+			"morphed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];",

+			"morphed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];",

+			"morphed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];",

+			"morphed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];",

+

+			"#ifndef USE_MORPHNORMALS",

+

+			"morphed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];",

+			"morphed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];",

+			"morphed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];",

+			"morphed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];",

+

+			"#endif",

+

+			"morphed += position;",

+

+		"#endif"

+

+	].join("\n"),

+

+	default_vertex : [

+

+		"vec4 mvPosition;",

+

+		"#ifdef USE_SKINNING",

+

+			"mvPosition = modelViewMatrix * skinned;",

+

+		"#endif",

+

+		"#if !defined( USE_SKINNING ) && defined( USE_MORPHTARGETS )",

+

+			"mvPosition = modelViewMatrix * vec4( morphed, 1.0 );",

+

+		"#endif",

+

+		"#if !defined( USE_SKINNING ) && ! defined( USE_MORPHTARGETS )",

+

+			"mvPosition = modelViewMatrix * vec4( position, 1.0 );",

+

+		"#endif",

+

+		"gl_Position = projectionMatrix * mvPosition;"

+

+	].join("\n"),

+

+	morphnormal_vertex: [

+

+		"#ifdef USE_MORPHNORMALS",

+

+			"vec3 morphedNormal = vec3( 0.0 );",

+

+			"morphedNormal +=  ( morphNormal0 - normal ) * morphTargetInfluences[ 0 ];",

+			"morphedNormal +=  ( morphNormal1 - normal ) * morphTargetInfluences[ 1 ];",

+			"morphedNormal +=  ( morphNormal2 - normal ) * morphTargetInfluences[ 2 ];",

+			"morphedNormal +=  ( morphNormal3 - normal ) * morphTargetInfluences[ 3 ];",

+

+			"morphedNormal += normal;",

+

+		"#endif"

+

+	].join("\n"),

+

+	skinnormal_vertex: [

+

+		"#ifdef USE_SKINNING",

+

+			"mat4 skinMatrix = skinWeight.x * boneMatX;",

+			"skinMatrix 	+= skinWeight.y * boneMatY;",

+

+			"#ifdef USE_MORPHNORMALS",

+

+			"vec4 skinnedNormal = skinMatrix * vec4( morphedNormal, 0.0 );",

+

+			"#else",

+

+			"vec4 skinnedNormal = skinMatrix * vec4( normal, 0.0 );",

+

+			"#endif",

+

+		"#endif"

+

+	].join("\n"),

+

+	defaultnormal_vertex: [

+

+		"vec3 objectNormal;",

+

+		"#ifdef USE_SKINNING",

+

+			"objectNormal = skinnedNormal.xyz;",

+

+		"#endif",

+

+		"#if !defined( USE_SKINNING ) && defined( USE_MORPHNORMALS )",

+

+			"objectNormal = morphedNormal;",

+

+		"#endif",

+

+		"#if !defined( USE_SKINNING ) && ! defined( USE_MORPHNORMALS )",

+

+			"objectNormal = normal;",

+

+		"#endif",

+

+		"#ifdef FLIP_SIDED",

+

+			"objectNormal = -objectNormal;",

+

+		"#endif",

+

+		"vec3 transformedNormal = normalMatrix * objectNormal;"

+

+	].join("\n"),

+

+	// SHADOW MAP

+

+	// based on SpiderGL shadow map and Fabien Sanglard's GLSL shadow mapping examples

+	//  http://spidergl.org/example.php?id=6

+	// 	http://fabiensanglard.net/shadowmapping

+

+	shadowmap_pars_fragment: [

+

+		"#ifdef USE_SHADOWMAP",

+

+			"uniform sampler2D shadowMap[ MAX_SHADOWS ];",

+			"uniform vec2 shadowMapSize[ MAX_SHADOWS ];",

+

+			"uniform float shadowDarkness[ MAX_SHADOWS ];",

+			"uniform float shadowBias[ MAX_SHADOWS ];",

+

+			"varying vec4 vShadowCoord[ MAX_SHADOWS ];",

+

+			"float unpackDepth( const in vec4 rgba_depth ) {",

+

+				"const vec4 bit_shift = vec4( 1.0 / ( 256.0 * 256.0 * 256.0 ), 1.0 / ( 256.0 * 256.0 ), 1.0 / 256.0, 1.0 );",

+				"float depth = dot( rgba_depth, bit_shift );",

+				"return depth;",

+

+			"}",

+

+		"#endif"

+

+	].join("\n"),

+

+	shadowmap_fragment: [

+

+		"#ifdef USE_SHADOWMAP",

+

+			"#ifdef SHADOWMAP_DEBUG",

+

+				"vec3 frustumColors[3];",

+				"frustumColors[0] = vec3( 1.0, 0.5, 0.0 );",

+				"frustumColors[1] = vec3( 0.0, 1.0, 0.8 );",

+				"frustumColors[2] = vec3( 0.0, 0.5, 1.0 );",

+

+			"#endif",

+

+			"#ifdef SHADOWMAP_CASCADE",

+

+				"int inFrustumCount = 0;",

+

+			"#endif",

+

+			"float fDepth;",

+			"vec3 shadowColor = vec3( 1.0 );",

+

+			"for( int i = 0; i < MAX_SHADOWS; i ++ ) {",

+

+				"vec3 shadowCoord = vShadowCoord[ i ].xyz / vShadowCoord[ i ].w;",

+

+				// "if ( something && something )" 		 breaks ATI OpenGL shader compiler

+				// "if ( all( something, something ) )"  using this instead

+

+				"bvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );",

+				"bool inFrustum = all( inFrustumVec );",

+

+				// don't shadow pixels outside of light frustum

+				// use just first frustum (for cascades)

+				// don't shadow pixels behind far plane of light frustum

+

+				"#ifdef SHADOWMAP_CASCADE",

+

+					"inFrustumCount += int( inFrustum );",

+					"bvec3 frustumTestVec = bvec3( inFrustum, inFrustumCount == 1, shadowCoord.z <= 1.0 );",

+

+				"#else",

+

+					"bvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );",

+

+				"#endif",

+

+				"bool frustumTest = all( frustumTestVec );",

+

+				"if ( frustumTest ) {",

+

+					"shadowCoord.z += shadowBias[ i ];",

+

+					"#if defined( SHADOWMAP_TYPE_PCF )",

+

+						// Percentage-close filtering

+						// (9 pixel kernel)

+						// http://fabiensanglard.net/shadowmappingPCF/

+

+						"float shadow = 0.0;",

+

+						/*

+						// nested loops breaks shader compiler / validator on some ATI cards when using OpenGL

+						// must enroll loop manually

+

+						"for ( float y = -1.25; y <= 1.25; y += 1.25 )",

+							"for ( float x = -1.25; x <= 1.25; x += 1.25 ) {",

+

+								"vec4 rgbaDepth = texture2D( shadowMap[ i ], vec2( x * xPixelOffset, y * yPixelOffset ) + shadowCoord.xy );",

+

+								// doesn't seem to produce any noticeable visual difference compared to simple "texture2D" lookup

+								//"vec4 rgbaDepth = texture2DProj( shadowMap[ i ], vec4( vShadowCoord[ i ].w * ( vec2( x * xPixelOffset, y * yPixelOffset ) + shadowCoord.xy ), 0.05, vShadowCoord[ i ].w ) );",

+

+								"float fDepth = unpackDepth( rgbaDepth );",

+

+								"if ( fDepth < shadowCoord.z )",

+									"shadow += 1.0;",

+

+						"}",

+

+						"shadow /= 9.0;",

+

+						*/

+

+						"const float shadowDelta = 1.0 / 9.0;",

+

+						"float xPixelOffset = 1.0 / shadowMapSize[ i ].x;",

+						"float yPixelOffset = 1.0 / shadowMapSize[ i ].y;",

+

+						"float dx0 = -1.25 * xPixelOffset;",

+						"float dy0 = -1.25 * yPixelOffset;",

+						"float dx1 = 1.25 * xPixelOffset;",

+						"float dy1 = 1.25 * yPixelOffset;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx0, dy0 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( 0.0, dy0 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx1, dy0 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx0, 0.0 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx1, 0.0 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx0, dy1 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( 0.0, dy1 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"fDepth = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx1, dy1 ) ) );",

+						"if ( fDepth < shadowCoord.z ) shadow += shadowDelta;",

+

+						"shadowColor = shadowColor * vec3( ( 1.0 - shadowDarkness[ i ] * shadow ) );",

+

+					"#elif defined( SHADOWMAP_TYPE_PCF_SOFT )",

+

+						// Percentage-close filtering

+						// (9 pixel kernel)

+						// http://fabiensanglard.net/shadowmappingPCF/

+

+						"float shadow = 0.0;",

+

+						"float xPixelOffset = 1.0 / shadowMapSize[ i ].x;",

+						"float yPixelOffset = 1.0 / shadowMapSize[ i ].y;",

+

+						"float dx0 = -1.0 * xPixelOffset;",

+						"float dy0 = -1.0 * yPixelOffset;",

+						"float dx1 = 1.0 * xPixelOffset;",

+						"float dy1 = 1.0 * yPixelOffset;",

+

+						"mat3 shadowKernel;",

+						"mat3 depthKernel;",

+

+						"depthKernel[0][0] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx0, dy0 ) ) );",

+						"if ( depthKernel[0][0] < shadowCoord.z ) shadowKernel[0][0] = 0.25;",

+						"else shadowKernel[0][0] = 0.0;",

+

+						"depthKernel[0][1] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx0, 0.0 ) ) );",

+						"if ( depthKernel[0][1] < shadowCoord.z ) shadowKernel[0][1] = 0.25;",

+						"else shadowKernel[0][1] = 0.0;",

+

+						"depthKernel[0][2] = unpackDepth( texture2D( shadowMap[ i], shadowCoord.xy + vec2( dx0, dy1 ) ) );",

+						"if ( depthKernel[0][2] < shadowCoord.z ) shadowKernel[0][2] = 0.25;",

+						"else shadowKernel[0][2] = 0.0;",

+

+						"depthKernel[1][0] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( 0.0, dy0 ) ) );",

+						"if ( depthKernel[1][0] < shadowCoord.z ) shadowKernel[1][0] = 0.25;",

+						"else shadowKernel[1][0] = 0.0;",

+

+						"depthKernel[1][1] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy ) );",

+						"if ( depthKernel[1][1] < shadowCoord.z ) shadowKernel[1][1] = 0.25;",

+						"else shadowKernel[1][1] = 0.0;",

+

+						"depthKernel[1][2] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( 0.0, dy1 ) ) );",

+						"if ( depthKernel[1][2] < shadowCoord.z ) shadowKernel[1][2] = 0.25;",

+						"else shadowKernel[1][2] = 0.0;",

+

+						"depthKernel[2][0] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx1, dy0 ) ) );",

+						"if ( depthKernel[2][0] < shadowCoord.z ) shadowKernel[2][0] = 0.25;",

+						"else shadowKernel[2][0] = 0.0;",

+

+						"depthKernel[2][1] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx1, 0.0 ) ) );",

+						"if ( depthKernel[2][1] < shadowCoord.z ) shadowKernel[2][1] = 0.25;",

+						"else shadowKernel[2][1] = 0.0;",

+

+						"depthKernel[2][2] = unpackDepth( texture2D( shadowMap[ i ], shadowCoord.xy + vec2( dx1, dy1 ) ) );",

+						"if ( depthKernel[2][2] < shadowCoord.z ) shadowKernel[2][2] = 0.25;",

+						"else shadowKernel[2][2] = 0.0;",

+

+						"vec2 fractionalCoord = 1.0 - fract( shadowCoord.xy * shadowMapSize[i].xy );",

+

+						"shadowKernel[0] = mix( shadowKernel[1], shadowKernel[0], fractionalCoord.x );",

+						"shadowKernel[1] = mix( shadowKernel[2], shadowKernel[1], fractionalCoord.x );",

+

+						"vec4 shadowValues;",

+						"shadowValues.x = mix( shadowKernel[0][1], shadowKernel[0][0], fractionalCoord.y );",

+						"shadowValues.y = mix( shadowKernel[0][2], shadowKernel[0][1], fractionalCoord.y );",

+						"shadowValues.z = mix( shadowKernel[1][1], shadowKernel[1][0], fractionalCoord.y );",

+						"shadowValues.w = mix( shadowKernel[1][2], shadowKernel[1][1], fractionalCoord.y );",

+

+						"shadow = dot( shadowValues, vec4( 1.0 ) );",

+

+						"shadowColor = shadowColor * vec3( ( 1.0 - shadowDarkness[ i ] * shadow ) );",

+

+					"#else",

+

+						"vec4 rgbaDepth = texture2D( shadowMap[ i ], shadowCoord.xy );",

+						"float fDepth = unpackDepth( rgbaDepth );",

+

+						"if ( fDepth < shadowCoord.z )",

+

+							// spot with multiple shadows is darker

+

+							"shadowColor = shadowColor * vec3( 1.0 - shadowDarkness[ i ] );",

+

+							// spot with multiple shadows has the same color as single shadow spot

+

+							//"shadowColor = min( shadowColor, vec3( shadowDarkness[ i ] ) );",

+

+					"#endif",

+

+				"}",

+

+

+				"#ifdef SHADOWMAP_DEBUG",

+

+					"#ifdef SHADOWMAP_CASCADE",

+

+						"if ( inFrustum && inFrustumCount == 1 ) gl_FragColor.xyz *= frustumColors[ i ];",

+

+					"#else",

+

+						"if ( inFrustum ) gl_FragColor.xyz *= frustumColors[ i ];",

+

+					"#endif",

+

+				"#endif",

+

+			"}",

+

+			"#ifdef GAMMA_OUTPUT",

+

+				"shadowColor *= shadowColor;",

+

+			"#endif",

+

+			"gl_FragColor.xyz = gl_FragColor.xyz * shadowColor;",

+

+		"#endif"

+

+	].join("\n"),

+

+	shadowmap_pars_vertex: [

+

+		"#ifdef USE_SHADOWMAP",

+

+			"varying vec4 vShadowCoord[ MAX_SHADOWS ];",

+			"uniform mat4 shadowMatrix[ MAX_SHADOWS ];",

+

+		"#endif"

+

+	].join("\n"),

+

+	shadowmap_vertex: [

+

+		"#ifdef USE_SHADOWMAP",

+

+			"for( int i = 0; i < MAX_SHADOWS; i ++ ) {",

+

+				"vShadowCoord[ i ] = shadowMatrix[ i ] * worldPosition;",

+

+			"}",

+

+		"#endif"

+

+	].join("\n"),

+

+	// ALPHATEST

+

+	alphatest_fragment: [

+

+		"#ifdef ALPHATEST",

+

+			"if ( gl_FragColor.a < ALPHATEST ) discard;",

+

+		"#endif"

+

+	].join("\n"),

+

+	// LINEAR SPACE

+

+	linear_to_gamma_fragment: [

+

+		"#ifdef GAMMA_OUTPUT",

+

+			"gl_FragColor.xyz = sqrt( gl_FragColor.xyz );",

+

+		"#endif"

+

+	].join("\n")

+

+

+};

+

+THREE.UniformsUtils = {

+

+	merge: function ( uniforms ) {

+

+		var u, p, tmp, merged = {};

+

+		for ( u = 0; u < uniforms.length; u ++ ) {

+

+			tmp = this.clone( uniforms[ u ] );

+

+			for ( p in tmp ) {

+

+				merged[ p ] = tmp[ p ];

+

+			}

+

+		}

+

+		return merged;

+

+	},

+

+	clone: function ( uniforms_src ) {

+

+		var u, p, parameter, parameter_src, uniforms_dst = {};

+

+		for ( u in uniforms_src ) {

+

+			uniforms_dst[ u ] = {};

+

+			for ( p in uniforms_src[ u ] ) {

+

+				parameter_src = uniforms_src[ u ][ p ];

+

+				if ( parameter_src instanceof THREE.Color ||

+					 parameter_src instanceof THREE.Vector2 ||

+					 parameter_src instanceof THREE.Vector3 ||

+					 parameter_src instanceof THREE.Vector4 ||

+					 parameter_src instanceof THREE.Matrix4 ||

+					 parameter_src instanceof THREE.Texture ) {

+

+					uniforms_dst[ u ][ p ] = parameter_src.clone();

+

+				} else if ( parameter_src instanceof Array ) {

+

+					uniforms_dst[ u ][ p ] = parameter_src.slice();

+

+				} else {

+

+					uniforms_dst[ u ][ p ] = parameter_src;

+

+				}

+

+			}

+

+		}

+

+		return uniforms_dst;

+

+	}

+

+};

+

+THREE.UniformsLib = {

+

+	common: {

+

+		"diffuse" : { type: "c", value: new THREE.Color( 0xeeeeee ) },

+		"opacity" : { type: "f", value: 1.0 },

+

+		"map" : { type: "t", value: null },

+		"offsetRepeat" : { type: "v4", value: new THREE.Vector4( 0, 0, 1, 1 ) },

+

+		"lightMap" : { type: "t", value: null },

+		"specularMap" : { type: "t", value: null },

+

+		"envMap" : { type: "t", value: null },

+		"flipEnvMap" : { type: "f", value: -1 },

+		"useRefract" : { type: "i", value: 0 },

+		"reflectivity" : { type: "f", value: 1.0 },

+		"refractionRatio" : { type: "f", value: 0.98 },

+		"combine" : { type: "i", value: 0 },

+

+		"morphTargetInfluences" : { type: "f", value: 0 }

+

+	},

+

+	bump: {

+

+		"bumpMap" : { type: "t", value: null },

+		"bumpScale" : { type: "f", value: 1 }

+

+	},

+

+	normalmap: {

+

+		"normalMap" : { type: "t", value: null },

+		"normalScale" : { type: "v2", value: new THREE.Vector2( 1, 1 ) }

+	},

+

+	fog : {

+

+		"fogDensity" : { type: "f", value: 0.00025 },

+		"fogNear" : { type: "f", value: 1 },

+		"fogFar" : { type: "f", value: 2000 },

+		"fogColor" : { type: "c", value: new THREE.Color( 0xffffff ) }

+

+	},

+

+	lights: {

+

+		"ambientLightColor" : { type: "fv", value: [] },

+

+		"directionalLightDirection" : { type: "fv", value: [] },

+		"directionalLightColor" : { type: "fv", value: [] },

+

+		"hemisphereLightDirection" : { type: "fv", value: [] },

+		"hemisphereLightSkyColor" : { type: "fv", value: [] },

+		"hemisphereLightGroundColor" : { type: "fv", value: [] },

+

+		"pointLightColor" : { type: "fv", value: [] },

+		"pointLightPosition" : { type: "fv", value: [] },

+		"pointLightDistance" : { type: "fv1", value: [] },

+

+		"spotLightColor" : { type: "fv", value: [] },

+		"spotLightPosition" : { type: "fv", value: [] },

+		"spotLightDirection" : { type: "fv", value: [] },

+		"spotLightDistance" : { type: "fv1", value: [] },

+		"spotLightAngleCos" : { type: "fv1", value: [] },

+		"spotLightExponent" : { type: "fv1", value: [] }

+

+	},

+

+	particle: {

+

+		"psColor" : { type: "c", value: new THREE.Color( 0xeeeeee ) },

+		"opacity" : { type: "f", value: 1.0 },

+		"size" : { type: "f", value: 1.0 },

+		"scale" : { type: "f", value: 1.0 },

+		"map" : { type: "t", value: null },

+

+		"fogDensity" : { type: "f", value: 0.00025 },

+		"fogNear" : { type: "f", value: 1 },

+		"fogFar" : { type: "f", value: 2000 },

+		"fogColor" : { type: "c", value: new THREE.Color( 0xffffff ) }

+

+	},

+

+	shadowmap: {

+

+		"shadowMap": { type: "tv", value: [] },

+		"shadowMapSize": { type: "v2v", value: [] },

+

+		"shadowBias" : { type: "fv1", value: [] },

+		"shadowDarkness": { type: "fv1", value: [] },

+

+		"shadowMatrix" : { type: "m4v", value: [] }

+

+	}

+

+};

+

+THREE.ShaderLib = {

+

+	'basic': {

+

+		uniforms: THREE.UniformsUtils.merge( [

+

+			THREE.UniformsLib[ "common" ],

+			THREE.UniformsLib[ "fog" ],

+			THREE.UniformsLib[ "shadowmap" ]

+

+		] ),

+

+		vertexShader: [

+

+			THREE.ShaderChunk[ "map_pars_vertex" ],

+			THREE.ShaderChunk[ "lightmap_pars_vertex" ],

+			THREE.ShaderChunk[ "envmap_pars_vertex" ],

+			THREE.ShaderChunk[ "color_pars_vertex" ],

+			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],

+			THREE.ShaderChunk[ "skinning_pars_vertex" ],

+			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "map_vertex" ],

+				THREE.ShaderChunk[ "lightmap_vertex" ],

+				THREE.ShaderChunk[ "color_vertex" ],

+				THREE.ShaderChunk[ "skinbase_vertex" ],

+

+				"#ifdef USE_ENVMAP",

+

+				THREE.ShaderChunk[ "morphnormal_vertex" ],

+				THREE.ShaderChunk[ "skinnormal_vertex" ],

+				THREE.ShaderChunk[ "defaultnormal_vertex" ],

+

+				"#endif",

+

+				THREE.ShaderChunk[ "morphtarget_vertex" ],

+				THREE.ShaderChunk[ "skinning_vertex" ],

+				THREE.ShaderChunk[ "default_vertex" ],

+

+				THREE.ShaderChunk[ "worldpos_vertex" ],

+				THREE.ShaderChunk[ "envmap_vertex" ],

+				THREE.ShaderChunk[ "shadowmap_vertex" ],

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform vec3 diffuse;",

+			"uniform float opacity;",

+

+			THREE.ShaderChunk[ "color_pars_fragment" ],

+			THREE.ShaderChunk[ "map_pars_fragment" ],

+			THREE.ShaderChunk[ "lightmap_pars_fragment" ],

+			THREE.ShaderChunk[ "envmap_pars_fragment" ],

+			THREE.ShaderChunk[ "fog_pars_fragment" ],

+			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],

+			THREE.ShaderChunk[ "specularmap_pars_fragment" ],

+

+			"void main() {",

+

+				"gl_FragColor = vec4( diffuse, opacity );",

+

+				THREE.ShaderChunk[ "map_fragment" ],

+				THREE.ShaderChunk[ "alphatest_fragment" ],

+				THREE.ShaderChunk[ "specularmap_fragment" ],

+				THREE.ShaderChunk[ "lightmap_fragment" ],

+				THREE.ShaderChunk[ "color_fragment" ],

+				THREE.ShaderChunk[ "envmap_fragment" ],

+				THREE.ShaderChunk[ "shadowmap_fragment" ],

+

+				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

+

+				THREE.ShaderChunk[ "fog_fragment" ],

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	'lambert': {

+

+		uniforms: THREE.UniformsUtils.merge( [

+

+			THREE.UniformsLib[ "common" ],

+			THREE.UniformsLib[ "fog" ],

+			THREE.UniformsLib[ "lights" ],

+			THREE.UniformsLib[ "shadowmap" ],

+

+			{

+				"ambient"  : { type: "c", value: new THREE.Color( 0xffffff ) },

+				"emissive" : { type: "c", value: new THREE.Color( 0x000000 ) },

+				"wrapRGB"  : { type: "v3", value: new THREE.Vector3( 1, 1, 1 ) }

+			}

+

+		] ),

+

+		vertexShader: [

+

+			"#define LAMBERT",

+

+			"varying vec3 vLightFront;",

+

+			"#ifdef DOUBLE_SIDED",

+

+				"varying vec3 vLightBack;",

+

+			"#endif",

+

+			THREE.ShaderChunk[ "map_pars_vertex" ],

+			THREE.ShaderChunk[ "lightmap_pars_vertex" ],

+			THREE.ShaderChunk[ "envmap_pars_vertex" ],

+			THREE.ShaderChunk[ "lights_lambert_pars_vertex" ],

+			THREE.ShaderChunk[ "color_pars_vertex" ],

+			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],

+			THREE.ShaderChunk[ "skinning_pars_vertex" ],

+			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "map_vertex" ],

+				THREE.ShaderChunk[ "lightmap_vertex" ],

+				THREE.ShaderChunk[ "color_vertex" ],

+

+				THREE.ShaderChunk[ "morphnormal_vertex" ],

+				THREE.ShaderChunk[ "skinbase_vertex" ],

+				THREE.ShaderChunk[ "skinnormal_vertex" ],

+				THREE.ShaderChunk[ "defaultnormal_vertex" ],

+

+				THREE.ShaderChunk[ "morphtarget_vertex" ],

+				THREE.ShaderChunk[ "skinning_vertex" ],

+				THREE.ShaderChunk[ "default_vertex" ],

+

+				THREE.ShaderChunk[ "worldpos_vertex" ],

+				THREE.ShaderChunk[ "envmap_vertex" ],

+				THREE.ShaderChunk[ "lights_lambert_vertex" ],

+				THREE.ShaderChunk[ "shadowmap_vertex" ],

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform float opacity;",

+

+			"varying vec3 vLightFront;",

+

+			"#ifdef DOUBLE_SIDED",

+

+				"varying vec3 vLightBack;",

+

+			"#endif",

+

+			THREE.ShaderChunk[ "color_pars_fragment" ],

+			THREE.ShaderChunk[ "map_pars_fragment" ],

+			THREE.ShaderChunk[ "lightmap_pars_fragment" ],

+			THREE.ShaderChunk[ "envmap_pars_fragment" ],

+			THREE.ShaderChunk[ "fog_pars_fragment" ],

+			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],

+			THREE.ShaderChunk[ "specularmap_pars_fragment" ],

+

+			"void main() {",

+

+				"gl_FragColor = vec4( vec3 ( 1.0 ), opacity );",

+

+				THREE.ShaderChunk[ "map_fragment" ],

+				THREE.ShaderChunk[ "alphatest_fragment" ],

+				THREE.ShaderChunk[ "specularmap_fragment" ],

+

+				"#ifdef DOUBLE_SIDED",

+

+					//"float isFront = float( gl_FrontFacing );",

+					//"gl_FragColor.xyz *= isFront * vLightFront + ( 1.0 - isFront ) * vLightBack;",

+

+					"if ( gl_FrontFacing )",

+						"gl_FragColor.xyz *= vLightFront;",

+					"else",

+						"gl_FragColor.xyz *= vLightBack;",

+

+				"#else",

+

+					"gl_FragColor.xyz *= vLightFront;",

+

+				"#endif",

+

+				THREE.ShaderChunk[ "lightmap_fragment" ],

+				THREE.ShaderChunk[ "color_fragment" ],

+				THREE.ShaderChunk[ "envmap_fragment" ],

+				THREE.ShaderChunk[ "shadowmap_fragment" ],

+

+				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

+

+				THREE.ShaderChunk[ "fog_fragment" ],

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	'phong': {

+

+		uniforms: THREE.UniformsUtils.merge( [

+

+			THREE.UniformsLib[ "common" ],

+			THREE.UniformsLib[ "bump" ],

+			THREE.UniformsLib[ "normalmap" ],

+			THREE.UniformsLib[ "fog" ],

+			THREE.UniformsLib[ "lights" ],

+			THREE.UniformsLib[ "shadowmap" ],

+

+			{

+				"ambient"  : { type: "c", value: new THREE.Color( 0xffffff ) },

+				"emissive" : { type: "c", value: new THREE.Color( 0x000000 ) },

+				"specular" : { type: "c", value: new THREE.Color( 0x111111 ) },

+				"shininess": { type: "f", value: 30 },

+				"wrapRGB"  : { type: "v3", value: new THREE.Vector3( 1, 1, 1 ) }

+			}

+

+		] ),

+

+		vertexShader: [

+

+			"#define PHONG",

+

+			"varying vec3 vViewPosition;",

+			"varying vec3 vNormal;",

+

+			THREE.ShaderChunk[ "map_pars_vertex" ],

+			THREE.ShaderChunk[ "lightmap_pars_vertex" ],

+			THREE.ShaderChunk[ "envmap_pars_vertex" ],

+			THREE.ShaderChunk[ "lights_phong_pars_vertex" ],

+			THREE.ShaderChunk[ "color_pars_vertex" ],

+			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],

+			THREE.ShaderChunk[ "skinning_pars_vertex" ],

+			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "map_vertex" ],

+				THREE.ShaderChunk[ "lightmap_vertex" ],

+				THREE.ShaderChunk[ "color_vertex" ],

+

+				THREE.ShaderChunk[ "morphnormal_vertex" ],

+				THREE.ShaderChunk[ "skinbase_vertex" ],

+				THREE.ShaderChunk[ "skinnormal_vertex" ],

+				THREE.ShaderChunk[ "defaultnormal_vertex" ],

+

+				"vNormal = normalize( transformedNormal );",

+

+				THREE.ShaderChunk[ "morphtarget_vertex" ],

+				THREE.ShaderChunk[ "skinning_vertex" ],

+				THREE.ShaderChunk[ "default_vertex" ],

+

+				"vViewPosition = -mvPosition.xyz;",

+

+				THREE.ShaderChunk[ "worldpos_vertex" ],

+				THREE.ShaderChunk[ "envmap_vertex" ],

+				THREE.ShaderChunk[ "lights_phong_vertex" ],

+				THREE.ShaderChunk[ "shadowmap_vertex" ],

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform vec3 diffuse;",

+			"uniform float opacity;",

+

+			"uniform vec3 ambient;",

+			"uniform vec3 emissive;",

+			"uniform vec3 specular;",

+			"uniform float shininess;",

+

+			THREE.ShaderChunk[ "color_pars_fragment" ],

+			THREE.ShaderChunk[ "map_pars_fragment" ],

+			THREE.ShaderChunk[ "lightmap_pars_fragment" ],

+			THREE.ShaderChunk[ "envmap_pars_fragment" ],

+			THREE.ShaderChunk[ "fog_pars_fragment" ],

+			THREE.ShaderChunk[ "lights_phong_pars_fragment" ],

+			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],

+			THREE.ShaderChunk[ "bumpmap_pars_fragment" ],

+			THREE.ShaderChunk[ "normalmap_pars_fragment" ],

+			THREE.ShaderChunk[ "specularmap_pars_fragment" ],

+

+			"void main() {",

+

+				"gl_FragColor = vec4( vec3 ( 1.0 ), opacity );",

+

+				THREE.ShaderChunk[ "map_fragment" ],

+				THREE.ShaderChunk[ "alphatest_fragment" ],

+				THREE.ShaderChunk[ "specularmap_fragment" ],

+

+				THREE.ShaderChunk[ "lights_phong_fragment" ],

+

+				THREE.ShaderChunk[ "lightmap_fragment" ],

+				THREE.ShaderChunk[ "color_fragment" ],

+				THREE.ShaderChunk[ "envmap_fragment" ],

+				THREE.ShaderChunk[ "shadowmap_fragment" ],

+

+				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

+

+				THREE.ShaderChunk[ "fog_fragment" ],

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	'particle_basic': {

+

+		uniforms:  THREE.UniformsUtils.merge( [

+

+			THREE.UniformsLib[ "particle" ],

+			THREE.UniformsLib[ "shadowmap" ]

+

+		] ),

+

+		vertexShader: [

+

+			"uniform float size;",

+			"uniform float scale;",

+

+			THREE.ShaderChunk[ "color_pars_vertex" ],

+			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "color_vertex" ],

+

+				"vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );",

+

+				"#ifdef USE_SIZEATTENUATION",

+					"gl_PointSize = size * ( scale / length( mvPosition.xyz ) );",

+				"#else",

+					"gl_PointSize = size;",

+				"#endif",

+

+				"gl_Position = projectionMatrix * mvPosition;",

+

+				THREE.ShaderChunk[ "worldpos_vertex" ],

+				THREE.ShaderChunk[ "shadowmap_vertex" ],

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform vec3 psColor;",

+			"uniform float opacity;",

+

+			THREE.ShaderChunk[ "color_pars_fragment" ],

+			THREE.ShaderChunk[ "map_particle_pars_fragment" ],

+			THREE.ShaderChunk[ "fog_pars_fragment" ],

+			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],

+

+			"void main() {",

+

+				"gl_FragColor = vec4( psColor, opacity );",

+

+				THREE.ShaderChunk[ "map_particle_fragment" ],

+				THREE.ShaderChunk[ "alphatest_fragment" ],

+				THREE.ShaderChunk[ "color_fragment" ],

+				THREE.ShaderChunk[ "shadowmap_fragment" ],

+				THREE.ShaderChunk[ "fog_fragment" ],

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	'dashed': {

+

+		uniforms: THREE.UniformsUtils.merge( [

+

+			THREE.UniformsLib[ "common" ],

+			THREE.UniformsLib[ "fog" ],

+

+			{

+				"scale":     { type: "f", value: 1 },

+				"dashSize":  { type: "f", value: 1 },

+				"totalSize": { type: "f", value: 2 }

+			}

+

+		] ),

+

+		vertexShader: [

+

+			"uniform float scale;",

+			"attribute float lineDistance;",

+

+			"varying float vLineDistance;",

+

+			THREE.ShaderChunk[ "color_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "color_vertex" ],

+

+				"vLineDistance = scale * lineDistance;",

+

+				"vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );",

+				"gl_Position = projectionMatrix * mvPosition;",

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform vec3 diffuse;",

+			"uniform float opacity;",

+

+			"uniform float dashSize;",

+			"uniform float totalSize;",

+

+			"varying float vLineDistance;",

+

+			THREE.ShaderChunk[ "color_pars_fragment" ],

+			THREE.ShaderChunk[ "fog_pars_fragment" ],

+

+			"void main() {",

+

+				"if ( mod( vLineDistance, totalSize ) > dashSize ) {",

+

+					"discard;",

+

+				"}",

+

+				"gl_FragColor = vec4( diffuse, opacity );",

+

+				THREE.ShaderChunk[ "color_fragment" ],

+				THREE.ShaderChunk[ "fog_fragment" ],

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	'depth': {

+

+		uniforms: {

+

+			"mNear": { type: "f", value: 1.0 },

+			"mFar" : { type: "f", value: 2000.0 },

+			"opacity" : { type: "f", value: 1.0 }

+

+		},

+

+		vertexShader: [

+

+			"void main() {",

+

+				"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform float mNear;",

+			"uniform float mFar;",

+			"uniform float opacity;",

+

+			"void main() {",

+

+				"float depth = gl_FragCoord.z / gl_FragCoord.w;",

+				"float color = 1.0 - smoothstep( mNear, mFar, depth );",

+				"gl_FragColor = vec4( vec3( color ), opacity );",

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	'normal': {

+

+		uniforms: {

+

+			"opacity" : { type: "f", value: 1.0 }

+

+		},

+

+		vertexShader: [

+

+			"varying vec3 vNormal;",

+

+			"void main() {",

+

+				"vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );",

+				"vNormal = normalize( normalMatrix * normal );",

+

+				"gl_Position = projectionMatrix * mvPosition;",

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform float opacity;",

+			"varying vec3 vNormal;",

+

+			"void main() {",

+

+				"gl_FragColor = vec4( 0.5 * normalize( vNormal ) + 0.5, opacity );",

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	/* -------------------------------------------------------------------------

+	//	Normal map shader

+	//		- Blinn-Phong

+	//		- normal + diffuse + specular + AO + displacement + reflection + shadow maps

+	//		- point and directional lights (use with "lights: true" material option)

+	 ------------------------------------------------------------------------- */

+

+	'normalmap' : {

+

+		uniforms: THREE.UniformsUtils.merge( [

+

+			THREE.UniformsLib[ "fog" ],

+			THREE.UniformsLib[ "lights" ],

+			THREE.UniformsLib[ "shadowmap" ],

+

+			{

+

+			"enableAO"		  : { type: "i", value: 0 },

+			"enableDiffuse"	  : { type: "i", value: 0 },

+			"enableSpecular"  : { type: "i", value: 0 },

+			"enableReflection": { type: "i", value: 0 },

+			"enableDisplacement": { type: "i", value: 0 },

+

+			"tDisplacement": { type: "t", value: null }, // must go first as this is vertex texture

+			"tDiffuse"	   : { type: "t", value: null },

+			"tCube"		   : { type: "t", value: null },

+			"tNormal"	   : { type: "t", value: null },

+			"tSpecular"	   : { type: "t", value: null },

+			"tAO"		   : { type: "t", value: null },

+

+			"uNormalScale": { type: "v2", value: new THREE.Vector2( 1, 1 ) },

+

+			"uDisplacementBias": { type: "f", value: 0.0 },

+			"uDisplacementScale": { type: "f", value: 1.0 },

+

+			"uDiffuseColor": { type: "c", value: new THREE.Color( 0xffffff ) },

+			"uSpecularColor": { type: "c", value: new THREE.Color( 0x111111 ) },

+			"uAmbientColor": { type: "c", value: new THREE.Color( 0xffffff ) },

+			"uShininess": { type: "f", value: 30 },

+			"uOpacity": { type: "f", value: 1 },

+

+			"useRefract": { type: "i", value: 0 },

+			"uRefractionRatio": { type: "f", value: 0.98 },

+			"uReflectivity": { type: "f", value: 0.5 },

+

+			"uOffset" : { type: "v2", value: new THREE.Vector2( 0, 0 ) },

+			"uRepeat" : { type: "v2", value: new THREE.Vector2( 1, 1 ) },

+

+			"wrapRGB"  : { type: "v3", value: new THREE.Vector3( 1, 1, 1 ) }

+

+			}

+

+		] ),

+

+		fragmentShader: [

+

+			"uniform vec3 uAmbientColor;",

+			"uniform vec3 uDiffuseColor;",

+			"uniform vec3 uSpecularColor;",

+			"uniform float uShininess;",

+			"uniform float uOpacity;",

+

+			"uniform bool enableDiffuse;",

+			"uniform bool enableSpecular;",

+			"uniform bool enableAO;",

+			"uniform bool enableReflection;",

+

+			"uniform sampler2D tDiffuse;",

+			"uniform sampler2D tNormal;",

+			"uniform sampler2D tSpecular;",

+			"uniform sampler2D tAO;",

+

+			"uniform samplerCube tCube;",

+

+			"uniform vec2 uNormalScale;",

+

+			"uniform bool useRefract;",

+			"uniform float uRefractionRatio;",

+			"uniform float uReflectivity;",

+

+			"varying vec3 vTangent;",

+			"varying vec3 vBinormal;",

+			"varying vec3 vNormal;",

+			"varying vec2 vUv;",

+

+			"uniform vec3 ambientLightColor;",

+

+			"#if MAX_DIR_LIGHTS > 0",

+

+				"uniform vec3 directionalLightColor[ MAX_DIR_LIGHTS ];",

+				"uniform vec3 directionalLightDirection[ MAX_DIR_LIGHTS ];",

+

+			"#endif",

+

+			"#if MAX_HEMI_LIGHTS > 0",

+

+				"uniform vec3 hemisphereLightSkyColor[ MAX_HEMI_LIGHTS ];",

+				"uniform vec3 hemisphereLightGroundColor[ MAX_HEMI_LIGHTS ];",

+				"uniform vec3 hemisphereLightDirection[ MAX_HEMI_LIGHTS ];",

+

+			"#endif",

+

+			"#if MAX_POINT_LIGHTS > 0",

+

+				"uniform vec3 pointLightColor[ MAX_POINT_LIGHTS ];",

+				"uniform vec3 pointLightPosition[ MAX_POINT_LIGHTS ];",

+				"uniform float pointLightDistance[ MAX_POINT_LIGHTS ];",

+

+			"#endif",

+

+			"#if MAX_SPOT_LIGHTS > 0",

+

+				"uniform vec3 spotLightColor[ MAX_SPOT_LIGHTS ];",

+				"uniform vec3 spotLightPosition[ MAX_SPOT_LIGHTS ];",

+				"uniform vec3 spotLightDirection[ MAX_SPOT_LIGHTS ];",

+				"uniform float spotLightAngleCos[ MAX_SPOT_LIGHTS ];",

+				"uniform float spotLightExponent[ MAX_SPOT_LIGHTS ];",

+				"uniform float spotLightDistance[ MAX_SPOT_LIGHTS ];",

+

+			"#endif",

+

+			"#ifdef WRAP_AROUND",

+

+				"uniform vec3 wrapRGB;",

+

+			"#endif",

+

+			"varying vec3 vWorldPosition;",

+			"varying vec3 vViewPosition;",

+

+			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],

+			THREE.ShaderChunk[ "fog_pars_fragment" ],

+

+			"void main() {",

+

+				"gl_FragColor = vec4( vec3( 1.0 ), uOpacity );",

+

+				"vec3 specularTex = vec3( 1.0 );",

+

+				"vec3 normalTex = texture2D( tNormal, vUv ).xyz * 2.0 - 1.0;",

+				"normalTex.xy *= uNormalScale;",

+				"normalTex = normalize( normalTex );",

+

+				"if( enableDiffuse ) {",

+

+					"#ifdef GAMMA_INPUT",

+

+						"vec4 texelColor = texture2D( tDiffuse, vUv );",

+						"texelColor.xyz *= texelColor.xyz;",

+

+						"gl_FragColor = gl_FragColor * texelColor;",

+

+					"#else",

+

+						"gl_FragColor = gl_FragColor * texture2D( tDiffuse, vUv );",

+

+					"#endif",

+

+				"}",

+

+				"if( enableAO ) {",

+

+					"#ifdef GAMMA_INPUT",

+

+						"vec4 aoColor = texture2D( tAO, vUv );",

+						"aoColor.xyz *= aoColor.xyz;",

+

+						"gl_FragColor.xyz = gl_FragColor.xyz * aoColor.xyz;",

+

+					"#else",

+

+						"gl_FragColor.xyz = gl_FragColor.xyz * texture2D( tAO, vUv ).xyz;",

+

+					"#endif",

+

+				"}",

+

+				"if( enableSpecular )",

+					"specularTex = texture2D( tSpecular, vUv ).xyz;",

+

+				"mat3 tsb = mat3( normalize( vTangent ), normalize( vBinormal ), normalize( vNormal ) );",

+				"vec3 finalNormal = tsb * normalTex;",

+

+				"#ifdef FLIP_SIDED",

+

+					"finalNormal = -finalNormal;",

+

+				"#endif",

+

+				"vec3 normal = normalize( finalNormal );",

+				"vec3 viewPosition = normalize( vViewPosition );",

+

+				// point lights

+

+				"#if MAX_POINT_LIGHTS > 0",

+

+					"vec3 pointDiffuse = vec3( 0.0 );",

+					"vec3 pointSpecular = vec3( 0.0 );",

+

+					"for ( int i = 0; i < MAX_POINT_LIGHTS; i ++ ) {",

+

+						"vec4 lPosition = viewMatrix * vec4( pointLightPosition[ i ], 1.0 );",

+						"vec3 pointVector = lPosition.xyz + vViewPosition.xyz;",

+

+						"float pointDistance = 1.0;",

+						"if ( pointLightDistance[ i ] > 0.0 )",

+							"pointDistance = 1.0 - min( ( length( pointVector ) / pointLightDistance[ i ] ), 1.0 );",

+

+						"pointVector = normalize( pointVector );",

+

+						// diffuse

+

+						"#ifdef WRAP_AROUND",

+

+							"float pointDiffuseWeightFull = max( dot( normal, pointVector ), 0.0 );",

+							"float pointDiffuseWeightHalf = max( 0.5 * dot( normal, pointVector ) + 0.5, 0.0 );",

+

+							"vec3 pointDiffuseWeight = mix( vec3 ( pointDiffuseWeightFull ), vec3( pointDiffuseWeightHalf ), wrapRGB );",

+

+						"#else",

+

+							"float pointDiffuseWeight = max( dot( normal, pointVector ), 0.0 );",

+

+						"#endif",

+

+						"pointDiffuse += pointDistance * pointLightColor[ i ] * uDiffuseColor * pointDiffuseWeight;",

+

+						// specular

+

+						"vec3 pointHalfVector = normalize( pointVector + viewPosition );",

+						"float pointDotNormalHalf = max( dot( normal, pointHalfVector ), 0.0 );",

+						"float pointSpecularWeight = specularTex.r * max( pow( pointDotNormalHalf, uShininess ), 0.0 );",

+

+						"#ifdef PHYSICALLY_BASED_SHADING",

+

+							// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+							"float specularNormalization = ( uShininess + 2.0001 ) / 8.0;",

+

+							"vec3 schlick = uSpecularColor + vec3( 1.0 - uSpecularColor ) * pow( 1.0 - dot( pointVector, pointHalfVector ), 5.0 );",

+							"pointSpecular += schlick * pointLightColor[ i ] * pointSpecularWeight * pointDiffuseWeight * pointDistance * specularNormalization;",

+

+						"#else",

+

+							"pointSpecular += pointDistance * pointLightColor[ i ] * uSpecularColor * pointSpecularWeight * pointDiffuseWeight;",

+

+						"#endif",

+

+					"}",

+

+				"#endif",

+

+				// spot lights

+

+				"#if MAX_SPOT_LIGHTS > 0",

+

+					"vec3 spotDiffuse = vec3( 0.0 );",

+					"vec3 spotSpecular = vec3( 0.0 );",

+

+					"for ( int i = 0; i < MAX_SPOT_LIGHTS; i ++ ) {",

+

+						"vec4 lPosition = viewMatrix * vec4( spotLightPosition[ i ], 1.0 );",

+						"vec3 spotVector = lPosition.xyz + vViewPosition.xyz;",

+

+						"float spotDistance = 1.0;",

+						"if ( spotLightDistance[ i ] > 0.0 )",

+							"spotDistance = 1.0 - min( ( length( spotVector ) / spotLightDistance[ i ] ), 1.0 );",

+

+						"spotVector = normalize( spotVector );",

+

+						"float spotEffect = dot( spotLightDirection[ i ], normalize( spotLightPosition[ i ] - vWorldPosition ) );",

+

+						"if ( spotEffect > spotLightAngleCos[ i ] ) {",

+

+							"spotEffect = max( pow( spotEffect, spotLightExponent[ i ] ), 0.0 );",

+

+							// diffuse

+

+							"#ifdef WRAP_AROUND",

+

+								"float spotDiffuseWeightFull = max( dot( normal, spotVector ), 0.0 );",

+								"float spotDiffuseWeightHalf = max( 0.5 * dot( normal, spotVector ) + 0.5, 0.0 );",

+

+								"vec3 spotDiffuseWeight = mix( vec3 ( spotDiffuseWeightFull ), vec3( spotDiffuseWeightHalf ), wrapRGB );",

+

+							"#else",

+

+								"float spotDiffuseWeight = max( dot( normal, spotVector ), 0.0 );",

+

+							"#endif",

+

+							"spotDiffuse += spotDistance * spotLightColor[ i ] * uDiffuseColor * spotDiffuseWeight * spotEffect;",

+

+							// specular

+

+							"vec3 spotHalfVector = normalize( spotVector + viewPosition );",

+							"float spotDotNormalHalf = max( dot( normal, spotHalfVector ), 0.0 );",

+							"float spotSpecularWeight = specularTex.r * max( pow( spotDotNormalHalf, uShininess ), 0.0 );",

+

+							"#ifdef PHYSICALLY_BASED_SHADING",

+

+								// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+								"float specularNormalization = ( uShininess + 2.0001 ) / 8.0;",

+

+								"vec3 schlick = uSpecularColor + vec3( 1.0 - uSpecularColor ) * pow( 1.0 - dot( spotVector, spotHalfVector ), 5.0 );",

+								"spotSpecular += schlick * spotLightColor[ i ] * spotSpecularWeight * spotDiffuseWeight * spotDistance * specularNormalization * spotEffect;",

+

+							"#else",

+

+								"spotSpecular += spotDistance * spotLightColor[ i ] * uSpecularColor * spotSpecularWeight * spotDiffuseWeight * spotEffect;",

+

+							"#endif",

+

+						"}",

+

+					"}",

+

+				"#endif",

+

+				// directional lights

+

+				"#if MAX_DIR_LIGHTS > 0",

+

+					"vec3 dirDiffuse = vec3( 0.0 );",

+					"vec3 dirSpecular = vec3( 0.0 );",

+

+					"for( int i = 0; i < MAX_DIR_LIGHTS; i++ ) {",

+

+						"vec4 lDirection = viewMatrix * vec4( directionalLightDirection[ i ], 0.0 );",

+						"vec3 dirVector = normalize( lDirection.xyz );",

+

+						// diffuse

+

+						"#ifdef WRAP_AROUND",

+

+							"float directionalLightWeightingFull = max( dot( normal, dirVector ), 0.0 );",

+							"float directionalLightWeightingHalf = max( 0.5 * dot( normal, dirVector ) + 0.5, 0.0 );",

+

+							"vec3 dirDiffuseWeight = mix( vec3( directionalLightWeightingFull ), vec3( directionalLightWeightingHalf ), wrapRGB );",

+

+						"#else",

+

+							"float dirDiffuseWeight = max( dot( normal, dirVector ), 0.0 );",

+

+						"#endif",

+

+						"dirDiffuse += directionalLightColor[ i ] * uDiffuseColor * dirDiffuseWeight;",

+

+						// specular

+

+						"vec3 dirHalfVector = normalize( dirVector + viewPosition );",

+						"float dirDotNormalHalf = max( dot( normal, dirHalfVector ), 0.0 );",

+						"float dirSpecularWeight = specularTex.r * max( pow( dirDotNormalHalf, uShininess ), 0.0 );",

+

+						"#ifdef PHYSICALLY_BASED_SHADING",

+

+							// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+							"float specularNormalization = ( uShininess + 2.0001 ) / 8.0;",

+

+							"vec3 schlick = uSpecularColor + vec3( 1.0 - uSpecularColor ) * pow( 1.0 - dot( dirVector, dirHalfVector ), 5.0 );",

+							"dirSpecular += schlick * directionalLightColor[ i ] * dirSpecularWeight * dirDiffuseWeight * specularNormalization;",

+

+						"#else",

+

+							"dirSpecular += directionalLightColor[ i ] * uSpecularColor * dirSpecularWeight * dirDiffuseWeight;",

+

+						"#endif",

+

+					"}",

+

+				"#endif",

+

+				// hemisphere lights

+

+				"#if MAX_HEMI_LIGHTS > 0",

+

+					"vec3 hemiDiffuse  = vec3( 0.0 );",

+					"vec3 hemiSpecular = vec3( 0.0 );" ,

+

+					"for( int i = 0; i < MAX_HEMI_LIGHTS; i ++ ) {",

+

+						"vec4 lDirection = viewMatrix * vec4( hemisphereLightDirection[ i ], 0.0 );",

+						"vec3 lVector = normalize( lDirection.xyz );",

+

+						// diffuse

+

+						"float dotProduct = dot( normal, lVector );",

+						"float hemiDiffuseWeight = 0.5 * dotProduct + 0.5;",

+

+						"vec3 hemiColor = mix( hemisphereLightGroundColor[ i ], hemisphereLightSkyColor[ i ], hemiDiffuseWeight );",

+

+						"hemiDiffuse += uDiffuseColor * hemiColor;",

+

+						// specular (sky light)

+

+

+						"vec3 hemiHalfVectorSky = normalize( lVector + viewPosition );",

+						"float hemiDotNormalHalfSky = 0.5 * dot( normal, hemiHalfVectorSky ) + 0.5;",

+						"float hemiSpecularWeightSky = specularTex.r * max( pow( hemiDotNormalHalfSky, uShininess ), 0.0 );",

+

+						// specular (ground light)

+

+						"vec3 lVectorGround = -lVector;",

+

+						"vec3 hemiHalfVectorGround = normalize( lVectorGround + viewPosition );",

+						"float hemiDotNormalHalfGround = 0.5 * dot( normal, hemiHalfVectorGround ) + 0.5;",

+						"float hemiSpecularWeightGround = specularTex.r * max( pow( hemiDotNormalHalfGround, uShininess ), 0.0 );",

+

+						"#ifdef PHYSICALLY_BASED_SHADING",

+

+							"float dotProductGround = dot( normal, lVectorGround );",

+

+							// 2.0 => 2.0001 is hack to work around ANGLE bug

+

+							"float specularNormalization = ( uShininess + 2.0001 ) / 8.0;",

+

+							"vec3 schlickSky = uSpecularColor + vec3( 1.0 - uSpecularColor ) * pow( 1.0 - dot( lVector, hemiHalfVectorSky ), 5.0 );",

+							"vec3 schlickGround = uSpecularColor + vec3( 1.0 - uSpecularColor ) * pow( 1.0 - dot( lVectorGround, hemiHalfVectorGround ), 5.0 );",

+							"hemiSpecular += hemiColor * specularNormalization * ( schlickSky * hemiSpecularWeightSky * max( dotProduct, 0.0 ) + schlickGround * hemiSpecularWeightGround * max( dotProductGround, 0.0 ) );",

+

+						"#else",

+

+							"hemiSpecular += uSpecularColor * hemiColor * ( hemiSpecularWeightSky + hemiSpecularWeightGround ) * hemiDiffuseWeight;",

+

+						"#endif",

+

+					"}",

+

+				"#endif",

+

+				// all lights contribution summation

+

+				"vec3 totalDiffuse = vec3( 0.0 );",

+				"vec3 totalSpecular = vec3( 0.0 );",

+

+				"#if MAX_DIR_LIGHTS > 0",

+

+					"totalDiffuse += dirDiffuse;",

+					"totalSpecular += dirSpecular;",

+

+				"#endif",

+

+				"#if MAX_HEMI_LIGHTS > 0",

+

+					"totalDiffuse += hemiDiffuse;",

+					"totalSpecular += hemiSpecular;",

+

+				"#endif",

+

+				"#if MAX_POINT_LIGHTS > 0",

+

+					"totalDiffuse += pointDiffuse;",

+					"totalSpecular += pointSpecular;",

+

+				"#endif",

+

+				"#if MAX_SPOT_LIGHTS > 0",

+

+					"totalDiffuse += spotDiffuse;",

+					"totalSpecular += spotSpecular;",

+

+				"#endif",

+

+				"#ifdef METAL",

+

+					"gl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * uAmbientColor + totalSpecular );",

+

+				"#else",

+

+					"gl_FragColor.xyz = gl_FragColor.xyz * ( totalDiffuse + ambientLightColor * uAmbientColor ) + totalSpecular;",

+

+				"#endif",

+

+				"if ( enableReflection ) {",

+

+					"vec3 vReflect;",

+					"vec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );",

+

+					"if ( useRefract ) {",

+

+						"vReflect = refract( cameraToVertex, normal, uRefractionRatio );",

+

+					"} else {",

+

+						"vReflect = reflect( cameraToVertex, normal );",

+

+					"}",

+

+					"vec4 cubeColor = textureCube( tCube, vec3( -vReflect.x, vReflect.yz ) );",

+

+					"#ifdef GAMMA_INPUT",

+

+						"cubeColor.xyz *= cubeColor.xyz;",

+

+					"#endif",

+

+					"gl_FragColor.xyz = mix( gl_FragColor.xyz, cubeColor.xyz, specularTex.r * uReflectivity );",

+

+				"}",

+

+				THREE.ShaderChunk[ "shadowmap_fragment" ],

+				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

+				THREE.ShaderChunk[ "fog_fragment" ],

+

+			"}"

+

+		].join("\n"),

+

+		vertexShader: [

+

+			"attribute vec4 tangent;",

+

+			"uniform vec2 uOffset;",

+			"uniform vec2 uRepeat;",

+

+			"uniform bool enableDisplacement;",

+

+			"#ifdef VERTEX_TEXTURES",

+

+				"uniform sampler2D tDisplacement;",

+				"uniform float uDisplacementScale;",

+				"uniform float uDisplacementBias;",

+

+			"#endif",

+

+			"varying vec3 vTangent;",

+			"varying vec3 vBinormal;",

+			"varying vec3 vNormal;",

+			"varying vec2 vUv;",

+

+			"varying vec3 vWorldPosition;",

+			"varying vec3 vViewPosition;",

+

+			THREE.ShaderChunk[ "skinning_pars_vertex" ],

+			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "skinbase_vertex" ],

+				THREE.ShaderChunk[ "skinnormal_vertex" ],

+

+				// normal, tangent and binormal vectors

+

+				"#ifdef USE_SKINNING",

+

+					"vNormal = normalize( normalMatrix * skinnedNormal.xyz );",

+

+					"vec4 skinnedTangent = skinMatrix * vec4( tangent.xyz, 0.0 );",

+					"vTangent = normalize( normalMatrix * skinnedTangent.xyz );",

+

+				"#else",

+

+					"vNormal = normalize( normalMatrix * normal );",

+					"vTangent = normalize( normalMatrix * tangent.xyz );",

+

+				"#endif",

+

+				"vBinormal = normalize( cross( vNormal, vTangent ) * tangent.w );",

+

+				"vUv = uv * uRepeat + uOffset;",

+

+				// displacement mapping

+

+				"vec3 displacedPosition;",

+

+				"#ifdef VERTEX_TEXTURES",

+

+					"if ( enableDisplacement ) {",

+

+						"vec3 dv = texture2D( tDisplacement, uv ).xyz;",

+						"float df = uDisplacementScale * dv.x + uDisplacementBias;",

+						"displacedPosition = position + normalize( normal ) * df;",

+

+					"} else {",

+

+						"#ifdef USE_SKINNING",

+

+							"vec4 skinVertex = vec4( position, 1.0 );",

+

+							"vec4 skinned  = boneMatX * skinVertex * skinWeight.x;",

+							"skinned 	  += boneMatY * skinVertex * skinWeight.y;",

+

+							"displacedPosition  = skinned.xyz;",

+

+						"#else",

+

+							"displacedPosition = position;",

+

+						"#endif",

+

+					"}",

+

+				"#else",

+

+					"#ifdef USE_SKINNING",

+

+						"vec4 skinVertex = vec4( position, 1.0 );",

+

+						"vec4 skinned  = boneMatX * skinVertex * skinWeight.x;",

+						"skinned 	  += boneMatY * skinVertex * skinWeight.y;",

+

+						"displacedPosition  = skinned.xyz;",

+

+					"#else",

+

+						"displacedPosition = position;",

+

+					"#endif",

+

+				"#endif",

+

+				//

+

+				"vec4 mvPosition = modelViewMatrix * vec4( displacedPosition, 1.0 );",

+				"vec4 worldPosition = modelMatrix * vec4( displacedPosition, 1.0 );",

+

+				"gl_Position = projectionMatrix * mvPosition;",

+

+				//

+

+				"vWorldPosition = worldPosition.xyz;",

+				"vViewPosition = -mvPosition.xyz;",

+

+				// shadows

+

+				"#ifdef USE_SHADOWMAP",

+

+					"for( int i = 0; i < MAX_SHADOWS; i ++ ) {",

+

+						"vShadowCoord[ i ] = shadowMatrix[ i ] * worldPosition;",

+

+					"}",

+

+				"#endif",

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	/* -------------------------------------------------------------------------

+	//	Cube map shader

+	 ------------------------------------------------------------------------- */

+

+	'cube': {

+

+		uniforms: { "tCube": { type: "t", value: null },

+					"tFlip": { type: "f", value: -1 } },

+

+		vertexShader: [

+

+			"varying vec3 vWorldPosition;",

+

+			"void main() {",

+

+				"vec4 worldPosition = modelMatrix * vec4( position, 1.0 );",

+				"vWorldPosition = worldPosition.xyz;",

+

+				"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"uniform samplerCube tCube;",

+			"uniform float tFlip;",

+

+			"varying vec3 vWorldPosition;",

+

+			"void main() {",

+

+				"gl_FragColor = textureCube( tCube, vec3( tFlip * vWorldPosition.x, vWorldPosition.yz ) );",

+

+			"}"

+

+		].join("\n")

+

+	},

+

+	// Depth encoding into RGBA texture

+	// 	based on SpiderGL shadow map example

+	// 		http://spidergl.org/example.php?id=6

+	// 	originally from

+	//		http://www.gamedev.net/topic/442138-packing-a-float-into-a-a8r8g8b8-texture-shader/page__whichpage__1%25EF%25BF%25BD

+	// 	see also here:

+	//		http://aras-p.info/blog/2009/07/30/encoding-floats-to-rgba-the-final/

+

+	'depthRGBA': {

+

+		uniforms: {},

+

+		vertexShader: [

+

+			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],

+			THREE.ShaderChunk[ "skinning_pars_vertex" ],

+

+			"void main() {",

+

+				THREE.ShaderChunk[ "skinbase_vertex" ],

+				THREE.ShaderChunk[ "morphtarget_vertex" ],

+				THREE.ShaderChunk[ "skinning_vertex" ],

+				THREE.ShaderChunk[ "default_vertex" ],

+

+			"}"

+

+		].join("\n"),

+

+		fragmentShader: [

+

+			"vec4 pack_depth( const in float depth ) {",

+

+				"const vec4 bit_shift = vec4( 256.0 * 256.0 * 256.0, 256.0 * 256.0, 256.0, 1.0 );",

+				"const vec4 bit_mask  = vec4( 0.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0 );",

+				"vec4 res = fract( depth * bit_shift );",

+				"res -= res.xxyz * bit_mask;",

+				"return res;",

+

+			"}",

+

+			"void main() {",

+

+				"gl_FragData[ 0 ] = pack_depth( gl_FragCoord.z );",

+

+				//"gl_FragData[ 0 ] = pack_depth( gl_FragCoord.z / gl_FragCoord.w );",

+				//"float z = ( ( gl_FragCoord.z / gl_FragCoord.w ) - 3.0 ) / ( 4000.0 - 3.0 );",

+				//"gl_FragData[ 0 ] = pack_depth( z );",

+				//"gl_FragData[ 0 ] = vec4( z, z, z, 1.0 );",

+

+			"}"

+

+		].join("\n")

+

+	}

+

+};

+/**

+ * @author supereggbert / http://www.paulbrunt.co.uk/

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ * @author szimek / https://github.com/szimek/

+ */

+

+THREE.WebGLRenderer = function ( parameters ) {

+

+	console.log( 'THREE.WebGLRenderer', THREE.REVISION );

+

+	parameters = parameters || {};

+

+	var _canvas = parameters.canvas !== undefined ? parameters.canvas : document.createElement( 'canvas' ),

+

+	_precision = parameters.precision !== undefined ? parameters.precision : 'highp',

+

+	_alpha = parameters.alpha !== undefined ? parameters.alpha : true,

+	_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,

+	_antialias = parameters.antialias !== undefined ? parameters.antialias : false,

+	_stencil = parameters.stencil !== undefined ? parameters.stencil : true,

+	_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,

+

+	_clearColor = parameters.clearColor !== undefined ? new THREE.Color( parameters.clearColor ) : new THREE.Color( 0x000000 ),

+	_clearAlpha = parameters.clearAlpha !== undefined ? parameters.clearAlpha : 0;

+

+	// public properties

+

+	this.domElement = _canvas;

+	this.context = null;

+	this.devicePixelRatio = parameters.devicePixelRatio !== undefined

+				? parameters.devicePixelRatio

+				: window.devicePixelRatio !== undefined

+					? window.devicePixelRatio

+					: 1;

+

+	// clearing

+

+	this.autoClear = true;

+	this.autoClearColor = true;

+	this.autoClearDepth = true;

+	this.autoClearStencil = true;

+

+	// scene graph

+

+	this.sortObjects = true;

+

+	this.autoUpdateObjects = true;

+	this.autoUpdateScene = true;

+

+	// physically based shading

+

+	this.gammaInput = false;

+	this.gammaOutput = false;

+	this.physicallyBasedShading = false;

+

+	// shadow map

+

+	this.shadowMapEnabled = false;

+	this.shadowMapAutoUpdate = true;

+	this.shadowMapType = THREE.PCFShadowMap;

+	this.shadowMapCullFace = THREE.CullFaceFront;

+	this.shadowMapDebug = false;

+	this.shadowMapCascade = false;

+

+	// morphs

+

+	this.maxMorphTargets = 8;

+	this.maxMorphNormals = 4;

+

+	// flags

+

+	this.autoScaleCubemaps = true;

+

+	// custom render plugins

+

+	this.renderPluginsPre = [];

+	this.renderPluginsPost = [];

+

+	// info

+

+	this.info = {

+

+		memory: {

+

+			programs: 0,

+			geometries: 0,

+			textures: 0

+

+		},

+

+		render: {

+

+			calls: 0,

+			vertices: 0,

+			faces: 0,

+			points: 0

+

+		}

+

+	};

+

+	// internal properties

+

+	var _this = this,

+

+	_programs = [],

+	_programs_counter = 0,

+

+	// internal state cache

+

+	_currentProgram = null,

+	_currentFramebuffer = null,

+	_currentMaterialId = -1,

+	_currentGeometryGroupHash = null,

+	_currentCamera = null,

+	_geometryGroupCounter = 0,

+

+	_usedTextureUnits = 0,

+

+	// GL state cache

+

+	_oldDoubleSided = -1,

+	_oldFlipSided = -1,

+

+	_oldBlending = -1,

+

+	_oldBlendEquation = -1,

+	_oldBlendSrc = -1,

+	_oldBlendDst = -1,

+

+	_oldDepthTest = -1,

+	_oldDepthWrite = -1,

+

+	_oldPolygonOffset = null,

+	_oldPolygonOffsetFactor = null,

+	_oldPolygonOffsetUnits = null,

+

+	_oldLineWidth = null,

+

+	_viewportX = 0,

+	_viewportY = 0,

+	_viewportWidth = 0,

+	_viewportHeight = 0,

+	_currentWidth = 0,

+	_currentHeight = 0,

+

+	_enabledAttributes = {},

+

+	// frustum

+

+	_frustum = new THREE.Frustum(),

+

+	 // camera matrices cache

+

+	_projScreenMatrix = new THREE.Matrix4(),

+	_projScreenMatrixPS = new THREE.Matrix4(),

+

+	_vector3 = new THREE.Vector3(),

+

+	// light arrays cache

+

+	_direction = new THREE.Vector3(),

+

+	_lightsNeedUpdate = true,

+

+	_lights = {

+

+		ambient: [ 0, 0, 0 ],

+		directional: { length: 0, colors: new Array(), positions: new Array() },

+		point: { length: 0, colors: new Array(), positions: new Array(), distances: new Array() },

+		spot: { length: 0, colors: new Array(), positions: new Array(), distances: new Array(), directions: new Array(), anglesCos: new Array(), exponents: new Array() },

+		hemi: { length: 0, skyColors: new Array(), groundColors: new Array(), positions: new Array() }

+

+	};

+

+	// initialize

+

+	var _gl;

+

+	var _glExtensionTextureFloat;

+	var _glExtensionStandardDerivatives;

+	var _glExtensionTextureFilterAnisotropic;

+	var _glExtensionCompressedTextureS3TC;

+

+	initGL();

+

+	setDefaultGLState();

+

+	this.context = _gl;

+

+	// GPU capabilities

+

+	var _maxTextures = _gl.getParameter( _gl.MAX_TEXTURE_IMAGE_UNITS );

+	var _maxVertexTextures = _gl.getParameter( _gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS );

+	var _maxTextureSize = _gl.getParameter( _gl.MAX_TEXTURE_SIZE );

+	var _maxCubemapSize = _gl.getParameter( _gl.MAX_CUBE_MAP_TEXTURE_SIZE );

+

+	var _maxAnisotropy = _glExtensionTextureFilterAnisotropic ? _gl.getParameter( _glExtensionTextureFilterAnisotropic.MAX_TEXTURE_MAX_ANISOTROPY_EXT ) : 0;

+

+	var _supportsVertexTextures = ( _maxVertexTextures > 0 );

+	var _supportsBoneTextures = _supportsVertexTextures && _glExtensionTextureFloat;

+

+	var _compressedTextureFormats = _glExtensionCompressedTextureS3TC ? _gl.getParameter( _gl.COMPRESSED_TEXTURE_FORMATS ) : [];

+

+	//

+

+	var _vertexShaderPrecisionHighpFloat = _gl.getShaderPrecisionFormat( _gl.VERTEX_SHADER, _gl.HIGH_FLOAT );

+	var _vertexShaderPrecisionMediumpFloat = _gl.getShaderPrecisionFormat( _gl.VERTEX_SHADER, _gl.MEDIUM_FLOAT );

+	var _vertexShaderPrecisionLowpFloat = _gl.getShaderPrecisionFormat( _gl.VERTEX_SHADER, _gl.LOW_FLOAT );

+

+	var _fragmentShaderPrecisionHighpFloat = _gl.getShaderPrecisionFormat( _gl.FRAGMENT_SHADER, _gl.HIGH_FLOAT );

+	var _fragmentShaderPrecisionMediumpFloat = _gl.getShaderPrecisionFormat( _gl.FRAGMENT_SHADER, _gl.MEDIUM_FLOAT );

+	var _fragmentShaderPrecisionLowpFloat = _gl.getShaderPrecisionFormat( _gl.FRAGMENT_SHADER, _gl.LOW_FLOAT );

+

+	var _vertexShaderPrecisionHighpInt = _gl.getShaderPrecisionFormat( _gl.VERTEX_SHADER, _gl.HIGH_INT );

+	var _vertexShaderPrecisionMediumpInt = _gl.getShaderPrecisionFormat( _gl.VERTEX_SHADER, _gl.MEDIUM_INT );

+	var _vertexShaderPrecisionLowpInt = _gl.getShaderPrecisionFormat( _gl.VERTEX_SHADER, _gl.LOW_INT );

+

+	var _fragmentShaderPrecisionHighpInt = _gl.getShaderPrecisionFormat( _gl.FRAGMENT_SHADER, _gl.HIGH_INT );

+	var _fragmentShaderPrecisionMediumpInt = _gl.getShaderPrecisionFormat( _gl.FRAGMENT_SHADER, _gl.MEDIUM_INT );

+	var _fragmentShaderPrecisionLowpInt = _gl.getShaderPrecisionFormat( _gl.FRAGMENT_SHADER, _gl.LOW_INT );

+

+	// clamp precision to maximum available

+

+	var highpAvailable = _vertexShaderPrecisionHighpFloat.precision > 0 && _fragmentShaderPrecisionHighpFloat.precision > 0;

+	var mediumpAvailable = _vertexShaderPrecisionMediumpFloat.precision > 0 && _fragmentShaderPrecisionMediumpFloat.precision > 0;

+

+	if ( _precision === "highp" && ! highpAvailable ) {

+

+		if ( mediumpAvailable ) {

+

+			_precision = "mediump";

+			console.warn( "WebGLRenderer: highp not supported, using mediump" );

+

+		} else {

+

+			_precision = "lowp";

+			console.warn( "WebGLRenderer: highp and mediump not supported, using lowp" );

+

+		}

+

+	}

+

+	if ( _precision === "mediump" && ! mediumpAvailable ) {

+

+		_precision = "lowp";

+		console.warn( "WebGLRenderer: mediump not supported, using lowp" );

+

+	}

+

+	// API

+

+	this.getContext = function () {

+

+		return _gl;

+

+	};

+

+	this.supportsVertexTextures = function () {

+

+		return _supportsVertexTextures;

+

+	};

+

+	this.supportsFloatTextures = function () {

+

+		return _glExtensionTextureFloat;

+

+	};

+	

+	this.supportsStandardDerivatives = function () {

+

+		return _glExtensionStandardDerivatives;

+

+	};

+	

+	this.supportsCompressedTextureS3TC = function () {

+

+		return _glExtensionCompressedTextureS3TC;

+

+	};

+	

+	this.getMaxAnisotropy  = function () {

+

+		return _maxAnisotropy;

+

+	};

+

+	this.getPrecision = function () {

+

+		return _precision;

+

+	};

+

+	this.setSize = function ( width, height ) {

+

+		_canvas.width = width * this.devicePixelRatio;

+		_canvas.height = height * this.devicePixelRatio;

+

+		_canvas.style.width = width + 'px';

+		_canvas.style.height = height + 'px';

+

+		this.setViewport( 0, 0, _canvas.width, _canvas.height );

+

+	};

+

+	this.setViewport = function ( x, y, width, height ) {

+

+		_viewportX = x !== undefined ? x : 0;

+		_viewportY = y !== undefined ? y : 0;

+

+		_viewportWidth = width !== undefined ? width : _canvas.width;

+		_viewportHeight = height !== undefined ? height : _canvas.height;

+

+		_gl.viewport( _viewportX, _viewportY, _viewportWidth, _viewportHeight );

+

+	};

+

+	this.setScissor = function ( x, y, width, height ) {

+

+		_gl.scissor( x, y, width, height );

+

+	};

+

+	this.enableScissorTest = function ( enable ) {

+

+		enable ? _gl.enable( _gl.SCISSOR_TEST ) : _gl.disable( _gl.SCISSOR_TEST );

+

+	};

+

+	// Clearing

+

+	this.setClearColorHex = function ( hex, alpha ) {

+

+		_clearColor.setHex( hex );

+		_clearAlpha = alpha;

+

+		_gl.clearColor( _clearColor.r, _clearColor.g, _clearColor.b, _clearAlpha );

+

+	};

+

+	this.setClearColor = function ( color, alpha ) {

+

+		_clearColor.copy( color );

+		_clearAlpha = alpha;

+

+		_gl.clearColor( _clearColor.r, _clearColor.g, _clearColor.b, _clearAlpha );

+

+	};

+

+	this.getClearColor = function () {

+

+		return _clearColor;

+

+	};

+

+	this.getClearAlpha = function () {

+

+		return _clearAlpha;

+

+	};

+

+	this.clear = function ( color, depth, stencil ) {

+

+		var bits = 0;

+

+		if ( color === undefined || color ) bits |= _gl.COLOR_BUFFER_BIT;

+		if ( depth === undefined || depth ) bits |= _gl.DEPTH_BUFFER_BIT;

+		if ( stencil === undefined || stencil ) bits |= _gl.STENCIL_BUFFER_BIT;

+

+		_gl.clear( bits );

+

+	};

+

+	this.clearTarget = function ( renderTarget, color, depth, stencil ) {

+

+		this.setRenderTarget( renderTarget );

+		this.clear( color, depth, stencil );

+

+	};

+

+	// Plugins

+

+	this.addPostPlugin = function ( plugin ) {

+

+		plugin.init( this );

+		this.renderPluginsPost.push( plugin );

+

+	};

+

+	this.addPrePlugin = function ( plugin ) {

+

+		plugin.init( this );

+		this.renderPluginsPre.push( plugin );

+

+	};

+

+	// Rendering

+

+	this.updateShadowMap = function ( scene, camera ) {

+

+		_currentProgram = null;

+		_oldBlending = -1;

+		_oldDepthTest = -1;

+		_oldDepthWrite = -1;

+		_currentGeometryGroupHash = -1;

+		_currentMaterialId = -1;

+		_lightsNeedUpdate = true;

+		_oldDoubleSided = -1;

+		_oldFlipSided = -1;

+

+		this.shadowMapPlugin.update( scene, camera );

+

+	};

+

+	// Internal functions

+

+	// Buffer allocation

+

+	function createParticleBuffers ( geometry ) {

+

+		geometry.__webglVertexBuffer = _gl.createBuffer();

+		geometry.__webglColorBuffer = _gl.createBuffer();

+

+		_this.info.memory.geometries ++;

+

+	};

+

+	function createLineBuffers ( geometry ) {

+

+		geometry.__webglVertexBuffer = _gl.createBuffer();

+		geometry.__webglColorBuffer = _gl.createBuffer();

+		geometry.__webglLineDistanceBuffer = _gl.createBuffer();

+

+		_this.info.memory.geometries ++;

+

+	};

+

+	function createRibbonBuffers ( geometry ) {

+

+		geometry.__webglVertexBuffer = _gl.createBuffer();

+		geometry.__webglColorBuffer = _gl.createBuffer();

+		geometry.__webglNormalBuffer = _gl.createBuffer();

+

+		_this.info.memory.geometries ++;

+

+	};

+

+	function createMeshBuffers ( geometryGroup ) {

+

+		geometryGroup.__webglVertexBuffer = _gl.createBuffer();

+		geometryGroup.__webglNormalBuffer = _gl.createBuffer();

+		geometryGroup.__webglTangentBuffer = _gl.createBuffer();

+		geometryGroup.__webglColorBuffer = _gl.createBuffer();

+		geometryGroup.__webglUVBuffer = _gl.createBuffer();

+		geometryGroup.__webglUV2Buffer = _gl.createBuffer();

+

+		geometryGroup.__webglSkinIndicesBuffer = _gl.createBuffer();

+		geometryGroup.__webglSkinWeightsBuffer = _gl.createBuffer();

+

+		geometryGroup.__webglFaceBuffer = _gl.createBuffer();

+		geometryGroup.__webglLineBuffer = _gl.createBuffer();

+

+		var m, ml;

+

+		if ( geometryGroup.numMorphTargets ) {

+

+			geometryGroup.__webglMorphTargetsBuffers = [];

+

+			for ( m = 0, ml = geometryGroup.numMorphTargets; m < ml; m ++ ) {

+

+				geometryGroup.__webglMorphTargetsBuffers.push( _gl.createBuffer() );

+

+			}

+

+		}

+

+		if ( geometryGroup.numMorphNormals ) {

+

+			geometryGroup.__webglMorphNormalsBuffers = [];

+

+			for ( m = 0, ml = geometryGroup.numMorphNormals; m < ml; m ++ ) {

+

+				geometryGroup.__webglMorphNormalsBuffers.push( _gl.createBuffer() );

+

+			}

+

+		}

+

+		_this.info.memory.geometries ++;

+

+	};

+

+	// Events

+

+	var onGeometryDispose = function ( event ) {

+

+		var geometry = event.target;

+

+		geometry.removeEventListener( 'dispose', onGeometryDispose );

+

+		deallocateGeometry( geometry );

+

+		_this.info.memory.geometries --;

+

+	};

+

+	var onTextureDispose = function ( event ) {

+

+		var texture = event.target;

+

+		texture.removeEventListener( 'dispose', onTextureDispose );

+

+		deallocateTexture( texture );

+

+		_this.info.memory.textures --;

+

+

+	};

+

+	var onRenderTargetDispose = function ( event ) {

+

+		var renderTarget = event.target;

+

+		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );

+

+		deallocateRenderTarget( renderTarget );

+

+		_this.info.memory.textures --;

+

+	};

+

+	var onMaterialDispose = function ( event ) {

+

+		var material = event.target;

+

+		material.removeEventListener( 'dispose', onMaterialDispose );

+

+		deallocateMaterial( material );

+

+	};

+

+	// Buffer deallocation

+

+	var deallocateGeometry = function ( geometry ) {

+

+		geometry.__webglInit = undefined;

+

+		if ( geometry.__webglVertexBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglVertexBuffer );

+		if ( geometry.__webglNormalBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglNormalBuffer );

+		if ( geometry.__webglTangentBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglTangentBuffer );

+		if ( geometry.__webglColorBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglColorBuffer );

+		if ( geometry.__webglUVBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglUVBuffer );

+		if ( geometry.__webglUV2Buffer !== undefined ) _gl.deleteBuffer( geometry.__webglUV2Buffer );

+

+		if ( geometry.__webglSkinIndicesBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglSkinIndicesBuffer );

+		if ( geometry.__webglSkinWeightsBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglSkinWeightsBuffer );

+

+		if ( geometry.__webglFaceBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglFaceBuffer );

+		if ( geometry.__webglLineBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglLineBuffer );

+

+		if ( geometry.__webglLineDistanceBuffer !== undefined ) _gl.deleteBuffer( geometry.__webglLineDistanceBuffer );

+

+		// geometry groups

+

+		if ( geometry.geometryGroups !== undefined ) {

+

+			for ( var g in geometry.geometryGroups ) {

+

+				var geometryGroup = geometry.geometryGroups[ g ];

+

+				if ( geometryGroup.numMorphTargets !== undefined ) {

+

+					for ( var m = 0, ml = geometryGroup.numMorphTargets; m < ml; m ++ ) {

+

+						_gl.deleteBuffer( geometryGroup.__webglMorphTargetsBuffers[ m ] );

+

+					}

+

+				}

+

+				if ( geometryGroup.numMorphNormals !== undefined ) {

+

+					for ( var m = 0, ml = geometryGroup.numMorphNormals; m < ml; m ++ ) {

+

+						_gl.deleteBuffer( geometryGroup.__webglMorphNormalsBuffers[ m ] );

+

+					}

+

+				}

+

+				deleteCustomAttributesBuffers( geometryGroup );

+

+			}

+

+		}

+

+		deleteCustomAttributesBuffers( geometry );

+

+	};

+

+	var deallocateTexture = function ( texture ) {

+

+		if ( texture.image && texture.image.__webglTextureCube ) {

+

+			// cube texture

+

+			_gl.deleteTexture( texture.image.__webglTextureCube );

+

+		} else {

+

+			// 2D texture

+

+			if ( ! texture.__webglInit ) return;

+

+			texture.__webglInit = false;

+			_gl.deleteTexture( texture.__webglTexture );

+

+		}

+

+	};

+

+	var deallocateRenderTarget = function ( renderTarget ) {

+

+		if ( !renderTarget || ! renderTarget.__webglTexture ) return;

+

+		_gl.deleteTexture( renderTarget.__webglTexture );

+

+		if ( renderTarget instanceof THREE.WebGLRenderTargetCube ) {

+

+			for ( var i = 0; i < 6; i ++ ) {

+

+				_gl.deleteFramebuffer( renderTarget.__webglFramebuffer[ i ] );

+				_gl.deleteRenderbuffer( renderTarget.__webglRenderbuffer[ i ] );

+

+			}

+

+		} else {

+

+			_gl.deleteFramebuffer( renderTarget.__webglFramebuffer );

+			_gl.deleteRenderbuffer( renderTarget.__webglRenderbuffer );

+

+		}

+

+	};

+

+	var deallocateMaterial = function ( material ) {

+

+		var program = material.program;

+

+		if ( program === undefined ) return;

+

+		material.program = undefined;

+

+		// only deallocate GL program if this was the last use of shared program

+		// assumed there is only single copy of any program in the _programs list

+		// (that's how it's constructed)

+

+		var i, il, programInfo;

+		var deleteProgram = false;

+

+		for ( i = 0, il = _programs.length; i < il; i ++ ) {

+

+			programInfo = _programs[ i ];

+

+			if ( programInfo.program === program ) {

+

+				programInfo.usedTimes --;

+

+				if ( programInfo.usedTimes === 0 ) {

+

+					deleteProgram = true;

+

+				}

+

+				break;

+

+			}

+

+		}

+

+		if ( deleteProgram === true ) {

+

+			// avoid using array.splice, this is costlier than creating new array from scratch

+

+			var newPrograms = [];

+

+			for ( i = 0, il = _programs.length; i < il; i ++ ) {

+

+				programInfo = _programs[ i ];

+

+				if ( programInfo.program !== program ) {

+

+					newPrograms.push( programInfo );

+

+				}

+

+			}

+

+			_programs = newPrograms;

+

+			_gl.deleteProgram( program );

+

+			_this.info.memory.programs --;

+

+		}

+

+	};

+

+	//

+

+	/*

+	function deleteParticleBuffers ( geometry ) {

+

+		_gl.deleteBuffer( geometry.__webglVertexBuffer );

+		_gl.deleteBuffer( geometry.__webglColorBuffer );

+

+		deleteCustomAttributesBuffers( geometry );

+

+		_this.info.memory.geometries --;

+

+	};

+

+	function deleteLineBuffers ( geometry ) {

+

+		_gl.deleteBuffer( geometry.__webglVertexBuffer );

+		_gl.deleteBuffer( geometry.__webglColorBuffer );

+		_gl.deleteBuffer( geometry.__webglLineDistanceBuffer );

+

+		deleteCustomAttributesBuffers( geometry );

+

+		_this.info.memory.geometries --;

+

+	};

+

+	function deleteRibbonBuffers ( geometry ) {

+

+		_gl.deleteBuffer( geometry.__webglVertexBuffer );

+		_gl.deleteBuffer( geometry.__webglColorBuffer );

+		_gl.deleteBuffer( geometry.__webglNormalBuffer );

+

+		deleteCustomAttributesBuffers( geometry );

+

+		_this.info.memory.geometries --;

+

+	};

+

+	function deleteMeshBuffers ( geometryGroup ) {

+

+		_gl.deleteBuffer( geometryGroup.__webglVertexBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglNormalBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglTangentBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglColorBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglUVBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglUV2Buffer );

+

+		_gl.deleteBuffer( geometryGroup.__webglSkinIndicesBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglSkinWeightsBuffer );

+

+		_gl.deleteBuffer( geometryGroup.__webglFaceBuffer );

+		_gl.deleteBuffer( geometryGroup.__webglLineBuffer );

+

+		var m, ml;

+

+		if ( geometryGroup.numMorphTargets ) {

+

+			for ( m = 0, ml = geometryGroup.numMorphTargets; m < ml; m ++ ) {

+

+				_gl.deleteBuffer( geometryGroup.__webglMorphTargetsBuffers[ m ] );

+

+			}

+

+		}

+

+		if ( geometryGroup.numMorphNormals ) {

+

+			for ( m = 0, ml = geometryGroup.numMorphNormals; m < ml; m ++ ) {

+

+				_gl.deleteBuffer( geometryGroup.__webglMorphNormalsBuffers[ m ] );

+

+			}

+

+		}

+

+		deleteCustomAttributesBuffers( geometryGroup );

+

+		_this.info.memory.geometries --;

+

+	};

+	*/

+

+	function deleteCustomAttributesBuffers( geometry ) {

+

+		if ( geometry.__webglCustomAttributesList ) {

+

+			for ( var id in geometry.__webglCustomAttributesList ) {

+

+				_gl.deleteBuffer( geometry.__webglCustomAttributesList[ id ].buffer );

+

+			}

+

+		}

+

+	};

+

+	// Buffer initialization

+

+	function initCustomAttributes ( geometry, object ) {

+

+		var nvertices = geometry.vertices.length;

+

+		var material = object.material;

+

+		if ( material.attributes ) {

+

+			if ( geometry.__webglCustomAttributesList === undefined ) {

+

+				geometry.__webglCustomAttributesList = [];

+

+			}

+

+			for ( var a in material.attributes ) {

+

+				var attribute = material.attributes[ a ];

+

+				if ( !attribute.__webglInitialized || attribute.createUniqueBuffers ) {

+

+					attribute.__webglInitialized = true;

+

+					var size = 1;		// "f" and "i"

+

+					if ( attribute.type === "v2" ) size = 2;

+					else if ( attribute.type === "v3" ) size = 3;

+					else if ( attribute.type === "v4" ) size = 4;

+					else if ( attribute.type === "c"  ) size = 3;

+

+					attribute.size = size;

+

+					attribute.array = new Float32Array( nvertices * size );

+

+					attribute.buffer = _gl.createBuffer();

+					attribute.buffer.belongsToAttribute = a;

+

+					attribute.needsUpdate = true;

+

+				}

+

+				geometry.__webglCustomAttributesList.push( attribute );

+

+			}

+

+		}

+

+	};

+

+	function initParticleBuffers ( geometry, object ) {

+

+		var nvertices = geometry.vertices.length;

+

+		geometry.__vertexArray = new Float32Array( nvertices * 3 );

+		geometry.__colorArray = new Float32Array( nvertices * 3 );

+

+		geometry.__sortArray = [];

+

+		geometry.__webglParticleCount = nvertices;

+

+		initCustomAttributes ( geometry, object );

+

+	};

+

+	function initLineBuffers ( geometry, object ) {

+

+		var nvertices = geometry.vertices.length;

+

+		geometry.__vertexArray = new Float32Array( nvertices * 3 );

+		geometry.__colorArray = new Float32Array( nvertices * 3 );

+		geometry.__lineDistanceArray = new Float32Array( nvertices * 1 );

+

+		geometry.__webglLineCount = nvertices;

+

+		initCustomAttributes ( geometry, object );

+

+	};

+

+	function initRibbonBuffers ( geometry, object ) {

+

+		var nvertices = geometry.vertices.length;

+

+		geometry.__vertexArray = new Float32Array( nvertices * 3 );

+		geometry.__colorArray = new Float32Array( nvertices * 3 );

+		geometry.__normalArray = new Float32Array( nvertices * 3 );

+

+		geometry.__webglVertexCount = nvertices;

+

+		initCustomAttributes ( geometry, object );

+

+	};

+

+	function initMeshBuffers ( geometryGroup, object ) {

+

+		var geometry = object.geometry,

+			faces3 = geometryGroup.faces3,

+			faces4 = geometryGroup.faces4,

+

+			nvertices = faces3.length * 3 + faces4.length * 4,

+			ntris     = faces3.length * 1 + faces4.length * 2,

+			nlines    = faces3.length * 3 + faces4.length * 4,

+

+			material = getBufferMaterial( object, geometryGroup ),

+

+			uvType = bufferGuessUVType( material ),

+			normalType = bufferGuessNormalType( material ),

+			vertexColorType = bufferGuessVertexColorType( material );

+

+		//console.log( "uvType", uvType, "normalType", normalType, "vertexColorType", vertexColorType, object, geometryGroup, material );

+

+		geometryGroup.__vertexArray = new Float32Array( nvertices * 3 );

+

+		if ( normalType ) {

+

+			geometryGroup.__normalArray = new Float32Array( nvertices * 3 );

+

+		}

+

+		if ( geometry.hasTangents ) {

+

+			geometryGroup.__tangentArray = new Float32Array( nvertices * 4 );

+

+		}

+

+		if ( vertexColorType ) {

+

+			geometryGroup.__colorArray = new Float32Array( nvertices * 3 );

+

+		}

+

+		if ( uvType ) {

+

+			if ( geometry.faceUvs.length > 0 || geometry.faceVertexUvs.length > 0 ) {

+

+				geometryGroup.__uvArray = new Float32Array( nvertices * 2 );

+

+			}

+

+			if ( geometry.faceUvs.length > 1 || geometry.faceVertexUvs.length > 1 ) {

+

+				geometryGroup.__uv2Array = new Float32Array( nvertices * 2 );

+

+			}

+

+		}

+

+		if ( object.geometry.skinWeights.length && object.geometry.skinIndices.length ) {

+

+			geometryGroup.__skinIndexArray = new Float32Array( nvertices * 4 );

+			geometryGroup.__skinWeightArray = new Float32Array( nvertices * 4 );

+

+		}

+

+		geometryGroup.__faceArray = new Uint16Array( ntris * 3 );

+		geometryGroup.__lineArray = new Uint16Array( nlines * 2 );

+

+		var m, ml;

+

+		if ( geometryGroup.numMorphTargets ) {

+

+			geometryGroup.__morphTargetsArrays = [];

+

+			for ( m = 0, ml = geometryGroup.numMorphTargets; m < ml; m ++ ) {

+

+				geometryGroup.__morphTargetsArrays.push( new Float32Array( nvertices * 3 ) );

+

+			}

+

+		}

+

+		if ( geometryGroup.numMorphNormals ) {

+

+			geometryGroup.__morphNormalsArrays = [];

+

+			for ( m = 0, ml = geometryGroup.numMorphNormals; m < ml; m ++ ) {

+

+				geometryGroup.__morphNormalsArrays.push( new Float32Array( nvertices * 3 ) );

+

+			}

+

+		}

+

+		geometryGroup.__webglFaceCount = ntris * 3;

+		geometryGroup.__webglLineCount = nlines * 2;

+

+

+		// custom attributes

+

+		if ( material.attributes ) {

+

+			if ( geometryGroup.__webglCustomAttributesList === undefined ) {

+

+				geometryGroup.__webglCustomAttributesList = [];

+

+			}

+

+			for ( var a in material.attributes ) {

+

+				// Do a shallow copy of the attribute object so different geometryGroup chunks use different

+				// attribute buffers which are correctly indexed in the setMeshBuffers function

+

+				var originalAttribute = material.attributes[ a ];

+

+				var attribute = {};

+

+				for ( var property in originalAttribute ) {

+

+					attribute[ property ] = originalAttribute[ property ];

+

+				}

+

+				if ( !attribute.__webglInitialized || attribute.createUniqueBuffers ) {

+

+					attribute.__webglInitialized = true;

+

+					var size = 1;		// "f" and "i"

+

+					if( attribute.type === "v2" ) size = 2;

+					else if( attribute.type === "v3" ) size = 3;

+					else if( attribute.type === "v4" ) size = 4;

+					else if( attribute.type === "c"  ) size = 3;

+

+					attribute.size = size;

+

+					attribute.array = new Float32Array( nvertices * size );

+

+					attribute.buffer = _gl.createBuffer();

+					attribute.buffer.belongsToAttribute = a;

+

+					originalAttribute.needsUpdate = true;

+					attribute.__original = originalAttribute;

+

+				}

+

+				geometryGroup.__webglCustomAttributesList.push( attribute );

+

+			}

+

+		}

+

+		geometryGroup.__inittedArrays = true;

+

+	};

+

+	function getBufferMaterial( object, geometryGroup ) {

+

+		return object.material instanceof THREE.MeshFaceMaterial

+			? object.material.materials[ geometryGroup.materialIndex ]

+			: object.material;

+

+	};

+

+	function materialNeedsSmoothNormals ( material ) {

+

+		return material && material.shading !== undefined && material.shading === THREE.SmoothShading;

+

+	};

+

+	function bufferGuessNormalType ( material ) {

+

+		// only MeshBasicMaterial and MeshDepthMaterial don't need normals

+

+		if ( ( material instanceof THREE.MeshBasicMaterial && !material.envMap ) || material instanceof THREE.MeshDepthMaterial ) {

+

+			return false;

+

+		}

+

+		if ( materialNeedsSmoothNormals( material ) ) {

+

+			return THREE.SmoothShading;

+

+		} else {

+

+			return THREE.FlatShading;

+

+		}

+

+	};

+

+	function bufferGuessVertexColorType ( material ) {

+

+		if ( material.vertexColors ) {

+

+			return material.vertexColors;

+

+		}

+

+		return false;

+

+	};

+

+	function bufferGuessUVType ( material ) {

+

+		// material must use some texture to require uvs

+

+		if ( material.map || material.lightMap || material.bumpMap || material.normalMap || material.specularMap || material instanceof THREE.ShaderMaterial ) {

+

+			return true;

+

+		}

+

+		return false;

+

+	};

+

+	//

+

+	function initDirectBuffers( geometry ) {

+

+		var a, attribute, type;

+

+		for ( a in geometry.attributes ) {

+

+			if ( a === "index" ) {

+

+				type = _gl.ELEMENT_ARRAY_BUFFER;

+

+			} else {

+

+				type = _gl.ARRAY_BUFFER;

+

+			}

+

+			attribute = geometry.attributes[ a ];

+

+			attribute.buffer = _gl.createBuffer();

+

+			_gl.bindBuffer( type, attribute.buffer );

+			_gl.bufferData( type, attribute.array, _gl.STATIC_DRAW );

+

+		}

+

+	};

+

+	// Buffer setting

+

+	function setParticleBuffers ( geometry, hint, object ) {

+

+		var v, c, vertex, offset, index, color,

+

+		vertices = geometry.vertices,

+		vl = vertices.length,

+

+		colors = geometry.colors,

+		cl = colors.length,

+

+		vertexArray = geometry.__vertexArray,

+		colorArray = geometry.__colorArray,

+

+		sortArray = geometry.__sortArray,

+

+		dirtyVertices = geometry.verticesNeedUpdate,

+		dirtyElements = geometry.elementsNeedUpdate,

+		dirtyColors = geometry.colorsNeedUpdate,

+

+		customAttributes = geometry.__webglCustomAttributesList,

+		i, il,

+		a, ca, cal, value,

+		customAttribute;

+

+		if ( object.sortParticles ) {

+

+			_projScreenMatrixPS.copy( _projScreenMatrix );

+			_projScreenMatrixPS.multiply( object.matrixWorld );

+

+			for ( v = 0; v < vl; v ++ ) {

+

+				vertex = vertices[ v ];

+

+				_vector3.copy( vertex );

+				_vector3.applyProjection( _projScreenMatrixPS );

+

+				sortArray[ v ] = [ _vector3.z, v ];

+

+			}

+

+			sortArray.sort( numericalSort );

+

+			for ( v = 0; v < vl; v ++ ) {

+

+				vertex = vertices[ sortArray[v][1] ];

+

+				offset = v * 3;

+

+				vertexArray[ offset ]     = vertex.x;

+				vertexArray[ offset + 1 ] = vertex.y;

+				vertexArray[ offset + 2 ] = vertex.z;

+

+			}

+

+			for ( c = 0; c < cl; c ++ ) {

+

+				offset = c * 3;

+

+				color = colors[ sortArray[c][1] ];

+

+				colorArray[ offset ]     = color.r;

+				colorArray[ offset + 1 ] = color.g;

+				colorArray[ offset + 2 ] = color.b;

+

+			}

+

+			if ( customAttributes ) {

+

+				for ( i = 0, il = customAttributes.length; i < il; i ++ ) {

+

+					customAttribute = customAttributes[ i ];

+

+					if ( ! ( customAttribute.boundTo === undefined || customAttribute.boundTo === "vertices" ) ) continue;

+

+					offset = 0;

+

+					cal = customAttribute.value.length;

+

+					if ( customAttribute.size === 1 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							index = sortArray[ ca ][ 1 ];

+

+							customAttribute.array[ ca ] = customAttribute.value[ index ];

+

+						}

+

+					} else if ( customAttribute.size === 2 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							index = sortArray[ ca ][ 1 ];

+

+							value = customAttribute.value[ index ];

+

+							customAttribute.array[ offset ] 	= value.x;

+							customAttribute.array[ offset + 1 ] = value.y;

+

+							offset += 2;

+

+						}

+

+					} else if ( customAttribute.size === 3 ) {

+

+						if ( customAttribute.type === "c" ) {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								index = sortArray[ ca ][ 1 ];

+

+								value = customAttribute.value[ index ];

+

+								customAttribute.array[ offset ]     = value.r;

+								customAttribute.array[ offset + 1 ] = value.g;

+								customAttribute.array[ offset + 2 ] = value.b;

+

+								offset += 3;

+

+							}

+

+						} else {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								index = sortArray[ ca ][ 1 ];

+

+								value = customAttribute.value[ index ];

+

+								customAttribute.array[ offset ] 	= value.x;

+								customAttribute.array[ offset + 1 ] = value.y;

+								customAttribute.array[ offset + 2 ] = value.z;

+

+								offset += 3;

+

+							}

+

+						}

+

+					} else if ( customAttribute.size === 4 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							index = sortArray[ ca ][ 1 ];

+

+							value = customAttribute.value[ index ];

+

+							customAttribute.array[ offset ]      = value.x;

+							customAttribute.array[ offset + 1  ] = value.y;

+							customAttribute.array[ offset + 2  ] = value.z;

+							customAttribute.array[ offset + 3  ] = value.w;

+

+							offset += 4;

+

+						}

+

+					}

+

+				}

+

+			}

+

+		} else {

+

+			if ( dirtyVertices ) {

+

+				for ( v = 0; v < vl; v ++ ) {

+

+					vertex = vertices[ v ];

+

+					offset = v * 3;

+

+					vertexArray[ offset ]     = vertex.x;

+					vertexArray[ offset + 1 ] = vertex.y;

+					vertexArray[ offset + 2 ] = vertex.z;

+

+				}

+

+			}

+

+			if ( dirtyColors ) {

+

+				for ( c = 0; c < cl; c ++ ) {

+

+					color = colors[ c ];

+

+					offset = c * 3;

+

+					colorArray[ offset ]     = color.r;

+					colorArray[ offset + 1 ] = color.g;

+					colorArray[ offset + 2 ] = color.b;

+

+				}

+

+			}

+

+			if ( customAttributes ) {

+

+				for ( i = 0, il = customAttributes.length; i < il; i ++ ) {

+

+					customAttribute = customAttributes[ i ];

+

+					if ( customAttribute.needsUpdate &&

+						 ( customAttribute.boundTo === undefined ||

+						   customAttribute.boundTo === "vertices") ) {

+

+						cal = customAttribute.value.length;

+

+						offset = 0;

+

+						if ( customAttribute.size === 1 ) {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								customAttribute.array[ ca ] = customAttribute.value[ ca ];

+

+							}

+

+						} else if ( customAttribute.size === 2 ) {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								value = customAttribute.value[ ca ];

+

+								customAttribute.array[ offset ] 	= value.x;

+								customAttribute.array[ offset + 1 ] = value.y;

+

+								offset += 2;

+

+							}

+

+						} else if ( customAttribute.size === 3 ) {

+

+							if ( customAttribute.type === "c" ) {

+

+								for ( ca = 0; ca < cal; ca ++ ) {

+

+									value = customAttribute.value[ ca ];

+

+									customAttribute.array[ offset ] 	= value.r;

+									customAttribute.array[ offset + 1 ] = value.g;

+									customAttribute.array[ offset + 2 ] = value.b;

+

+									offset += 3;

+

+								}

+

+							} else {

+

+								for ( ca = 0; ca < cal; ca ++ ) {

+

+									value = customAttribute.value[ ca ];

+

+									customAttribute.array[ offset ] 	= value.x;

+									customAttribute.array[ offset + 1 ] = value.y;

+									customAttribute.array[ offset + 2 ] = value.z;

+

+									offset += 3;

+

+								}

+

+							}

+

+						} else if ( customAttribute.size === 4 ) {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								value = customAttribute.value[ ca ];

+

+								customAttribute.array[ offset ]      = value.x;

+								customAttribute.array[ offset + 1  ] = value.y;

+								customAttribute.array[ offset + 2  ] = value.z;

+								customAttribute.array[ offset + 3  ] = value.w;

+

+								offset += 4;

+

+							}

+

+						}

+

+					}

+

+				}

+

+			}

+

+		}

+

+		if ( dirtyVertices || object.sortParticles ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglVertexBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, vertexArray, hint );

+

+		}

+

+		if ( dirtyColors || object.sortParticles ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglColorBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, colorArray, hint );

+

+		}

+

+		if ( customAttributes ) {

+

+			for ( i = 0, il = customAttributes.length; i < il; i ++ ) {

+

+				customAttribute = customAttributes[ i ];

+

+				if ( customAttribute.needsUpdate || object.sortParticles ) {

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, customAttribute.buffer );

+					_gl.bufferData( _gl.ARRAY_BUFFER, customAttribute.array, hint );

+

+				}

+

+			}

+

+		}

+

+

+	};

+

+	function setLineBuffers ( geometry, hint ) {

+

+		var v, c, d, vertex, offset, color,

+

+		vertices = geometry.vertices,

+		colors = geometry.colors,

+		lineDistances = geometry.lineDistances,

+

+		vl = vertices.length,

+		cl = colors.length,

+		dl = lineDistances.length,

+

+		vertexArray = geometry.__vertexArray,

+		colorArray = geometry.__colorArray,

+		lineDistanceArray = geometry.__lineDistanceArray,

+

+		dirtyVertices = geometry.verticesNeedUpdate,

+		dirtyColors = geometry.colorsNeedUpdate,

+		dirtyLineDistances = geometry.lineDistancesNeedUpdate,

+

+		customAttributes = geometry.__webglCustomAttributesList,

+

+		i, il,

+		a, ca, cal, value,

+		customAttribute;

+

+		if ( dirtyVertices ) {

+

+			for ( v = 0; v < vl; v ++ ) {

+

+				vertex = vertices[ v ];

+

+				offset = v * 3;

+

+				vertexArray[ offset ]     = vertex.x;

+				vertexArray[ offset + 1 ] = vertex.y;

+				vertexArray[ offset + 2 ] = vertex.z;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglVertexBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, vertexArray, hint );

+

+		}

+

+		if ( dirtyColors ) {

+

+			for ( c = 0; c < cl; c ++ ) {

+

+				color = colors[ c ];

+

+				offset = c * 3;

+

+				colorArray[ offset ]     = color.r;

+				colorArray[ offset + 1 ] = color.g;

+				colorArray[ offset + 2 ] = color.b;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglColorBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, colorArray, hint );

+

+		}

+

+		if ( dirtyLineDistances ) {

+

+			for ( d = 0; d < dl; d ++ ) {

+

+				lineDistanceArray[ d ] = lineDistances[ d ];

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglLineDistanceBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, lineDistanceArray, hint );

+

+		}

+

+		if ( customAttributes ) {

+

+			for ( i = 0, il = customAttributes.length; i < il; i ++ ) {

+

+				customAttribute = customAttributes[ i ];

+

+				if ( customAttribute.needsUpdate &&

+					 ( customAttribute.boundTo === undefined ||

+					   customAttribute.boundTo === "vertices" ) ) {

+

+					offset = 0;

+

+					cal = customAttribute.value.length;

+

+					if ( customAttribute.size === 1 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							customAttribute.array[ ca ] = customAttribute.value[ ca ];

+

+						}

+

+					} else if ( customAttribute.size === 2 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							value = customAttribute.value[ ca ];

+

+							customAttribute.array[ offset ] 	= value.x;

+							customAttribute.array[ offset + 1 ] = value.y;

+

+							offset += 2;

+

+						}

+

+					} else if ( customAttribute.size === 3 ) {

+

+						if ( customAttribute.type === "c" ) {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								value = customAttribute.value[ ca ];

+

+								customAttribute.array[ offset ] 	= value.r;

+								customAttribute.array[ offset + 1 ] = value.g;

+								customAttribute.array[ offset + 2 ] = value.b;

+

+								offset += 3;

+

+							}

+

+						} else {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								value = customAttribute.value[ ca ];

+

+								customAttribute.array[ offset ] 	= value.x;

+								customAttribute.array[ offset + 1 ] = value.y;

+								customAttribute.array[ offset + 2 ] = value.z;

+

+								offset += 3;

+

+							}

+

+						}

+

+					} else if ( customAttribute.size === 4 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							value = customAttribute.value[ ca ];

+

+							customAttribute.array[ offset ] 	 = value.x;

+							customAttribute.array[ offset + 1  ] = value.y;

+							customAttribute.array[ offset + 2  ] = value.z;

+							customAttribute.array[ offset + 3  ] = value.w;

+

+							offset += 4;

+

+						}

+

+					}

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, customAttribute.buffer );

+					_gl.bufferData( _gl.ARRAY_BUFFER, customAttribute.array, hint );

+

+				}

+

+			}

+

+		}

+

+	};

+

+	function setRibbonBuffers ( geometry, hint ) {

+

+		var v, c, n, vertex, offset, color, normal,

+

+		i, il, ca, cal, customAttribute, value,

+

+		vertices = geometry.vertices,

+		colors = geometry.colors,

+		normals = geometry.normals,

+

+		vl = vertices.length,

+		cl = colors.length,

+		nl = normals.length,

+

+		vertexArray = geometry.__vertexArray,

+		colorArray = geometry.__colorArray,

+		normalArray = geometry.__normalArray,

+

+		dirtyVertices = geometry.verticesNeedUpdate,

+		dirtyColors = geometry.colorsNeedUpdate,

+		dirtyNormals = geometry.normalsNeedUpdate,

+

+		customAttributes = geometry.__webglCustomAttributesList;

+

+		if ( dirtyVertices ) {

+

+			for ( v = 0; v < vl; v ++ ) {

+

+				vertex = vertices[ v ];

+

+				offset = v * 3;

+

+				vertexArray[ offset ]     = vertex.x;

+				vertexArray[ offset + 1 ] = vertex.y;

+				vertexArray[ offset + 2 ] = vertex.z;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglVertexBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, vertexArray, hint );

+

+		}

+

+		if ( dirtyColors ) {

+

+			for ( c = 0; c < cl; c ++ ) {

+

+				color = colors[ c ];

+

+				offset = c * 3;

+

+				colorArray[ offset ]     = color.r;

+				colorArray[ offset + 1 ] = color.g;

+				colorArray[ offset + 2 ] = color.b;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglColorBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, colorArray, hint );

+

+		}

+

+		if ( dirtyNormals ) {

+

+			for ( n = 0; n < nl; n ++ ) {

+

+				normal = normals[ n ];

+

+				offset = n * 3;

+

+				normalArray[ offset ]     = normal.x;

+				normalArray[ offset + 1 ] = normal.y;

+				normalArray[ offset + 2 ] = normal.z;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometry.__webglNormalBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, normalArray, hint );

+

+		}

+

+		if ( customAttributes ) {

+

+			for ( i = 0, il = customAttributes.length; i < il; i ++ ) {

+

+				customAttribute = customAttributes[ i ];

+

+				if ( customAttribute.needsUpdate &&

+					 ( customAttribute.boundTo === undefined ||

+					   customAttribute.boundTo === "vertices" ) ) {

+

+					offset = 0;

+

+					cal = customAttribute.value.length;

+

+					if ( customAttribute.size === 1 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							customAttribute.array[ ca ] = customAttribute.value[ ca ];

+

+						}

+

+					} else if ( customAttribute.size === 2 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							value = customAttribute.value[ ca ];

+

+							customAttribute.array[ offset ] 	= value.x;

+							customAttribute.array[ offset + 1 ] = value.y;

+

+							offset += 2;

+

+						}

+

+					} else if ( customAttribute.size === 3 ) {

+

+						if ( customAttribute.type === "c" ) {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								value = customAttribute.value[ ca ];

+

+								customAttribute.array[ offset ] 	= value.r;

+								customAttribute.array[ offset + 1 ] = value.g;

+								customAttribute.array[ offset + 2 ] = value.b;

+

+								offset += 3;

+

+							}

+

+						} else {

+

+							for ( ca = 0; ca < cal; ca ++ ) {

+

+								value = customAttribute.value[ ca ];

+

+								customAttribute.array[ offset ] 	= value.x;

+								customAttribute.array[ offset + 1 ] = value.y;

+								customAttribute.array[ offset + 2 ] = value.z;

+

+								offset += 3;

+

+							}

+

+						}

+

+					} else if ( customAttribute.size === 4 ) {

+

+						for ( ca = 0; ca < cal; ca ++ ) {

+

+							value = customAttribute.value[ ca ];

+

+							customAttribute.array[ offset ] 	 = value.x;

+							customAttribute.array[ offset + 1  ] = value.y;

+							customAttribute.array[ offset + 2  ] = value.z;

+							customAttribute.array[ offset + 3  ] = value.w;

+

+							offset += 4;

+

+						}

+

+					}

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, customAttribute.buffer );

+					_gl.bufferData( _gl.ARRAY_BUFFER, customAttribute.array, hint );

+

+				}

+

+			}

+

+		}

+

+	};

+

+	function setMeshBuffers( geometryGroup, object, hint, dispose, material ) {

+

+		if ( ! geometryGroup.__inittedArrays ) {

+

+			return;

+

+		}

+

+		var normalType = bufferGuessNormalType( material ),

+		vertexColorType = bufferGuessVertexColorType( material ),

+		uvType = bufferGuessUVType( material ),

+

+		needsSmoothNormals = ( normalType === THREE.SmoothShading );

+

+		var f, fl, fi, face,

+		vertexNormals, faceNormal, normal,

+		vertexColors, faceColor,

+		vertexTangents,

+		uv, uv2, v1, v2, v3, v4, t1, t2, t3, t4, n1, n2, n3, n4,

+		c1, c2, c3, c4,

+		sw1, sw2, sw3, sw4,

+		si1, si2, si3, si4,

+		sa1, sa2, sa3, sa4,

+		sb1, sb2, sb3, sb4,

+		m, ml, i, il,

+		vn, uvi, uv2i,

+		vk, vkl, vka,

+		nka, chf, faceVertexNormals,

+		a,

+

+		vertexIndex = 0,

+

+		offset = 0,

+		offset_uv = 0,

+		offset_uv2 = 0,

+		offset_face = 0,

+		offset_normal = 0,

+		offset_tangent = 0,

+		offset_line = 0,

+		offset_color = 0,

+		offset_skin = 0,

+		offset_morphTarget = 0,

+		offset_custom = 0,

+		offset_customSrc = 0,

+

+		value,

+

+		vertexArray = geometryGroup.__vertexArray,

+		uvArray = geometryGroup.__uvArray,

+		uv2Array = geometryGroup.__uv2Array,

+		normalArray = geometryGroup.__normalArray,

+		tangentArray = geometryGroup.__tangentArray,

+		colorArray = geometryGroup.__colorArray,

+

+		skinIndexArray = geometryGroup.__skinIndexArray,

+		skinWeightArray = geometryGroup.__skinWeightArray,

+

+		morphTargetsArrays = geometryGroup.__morphTargetsArrays,

+		morphNormalsArrays = geometryGroup.__morphNormalsArrays,

+

+		customAttributes = geometryGroup.__webglCustomAttributesList,

+		customAttribute,

+

+		faceArray = geometryGroup.__faceArray,

+		lineArray = geometryGroup.__lineArray,

+

+		geometry = object.geometry, // this is shared for all chunks

+

+		dirtyVertices = geometry.verticesNeedUpdate,

+		dirtyElements = geometry.elementsNeedUpdate,

+		dirtyUvs = geometry.uvsNeedUpdate,

+		dirtyNormals = geometry.normalsNeedUpdate,

+		dirtyTangents = geometry.tangentsNeedUpdate,

+		dirtyColors = geometry.colorsNeedUpdate,

+		dirtyMorphTargets = geometry.morphTargetsNeedUpdate,

+

+		vertices = geometry.vertices,

+		chunk_faces3 = geometryGroup.faces3,

+		chunk_faces4 = geometryGroup.faces4,

+		obj_faces = geometry.faces,

+

+		obj_uvs  = geometry.faceVertexUvs[ 0 ],

+		obj_uvs2 = geometry.faceVertexUvs[ 1 ],

+

+		obj_colors = geometry.colors,

+

+		obj_skinIndices = geometry.skinIndices,

+		obj_skinWeights = geometry.skinWeights,

+

+		morphTargets = geometry.morphTargets,

+		morphNormals = geometry.morphNormals;

+

+		if ( dirtyVertices ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces3[ f ] ];

+

+				v1 = vertices[ face.a ];

+				v2 = vertices[ face.b ];

+				v3 = vertices[ face.c ];

+

+				vertexArray[ offset ]     = v1.x;

+				vertexArray[ offset + 1 ] = v1.y;

+				vertexArray[ offset + 2 ] = v1.z;

+

+				vertexArray[ offset + 3 ] = v2.x;

+				vertexArray[ offset + 4 ] = v2.y;

+				vertexArray[ offset + 5 ] = v2.z;

+

+				vertexArray[ offset + 6 ] = v3.x;

+				vertexArray[ offset + 7 ] = v3.y;

+				vertexArray[ offset + 8 ] = v3.z;

+

+				offset += 9;

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces4[ f ] ];

+

+				v1 = vertices[ face.a ];

+				v2 = vertices[ face.b ];

+				v3 = vertices[ face.c ];

+				v4 = vertices[ face.d ];

+

+				vertexArray[ offset ]     = v1.x;

+				vertexArray[ offset + 1 ] = v1.y;

+				vertexArray[ offset + 2 ] = v1.z;

+

+				vertexArray[ offset + 3 ] = v2.x;

+				vertexArray[ offset + 4 ] = v2.y;

+				vertexArray[ offset + 5 ] = v2.z;

+

+				vertexArray[ offset + 6 ] = v3.x;

+				vertexArray[ offset + 7 ] = v3.y;

+				vertexArray[ offset + 8 ] = v3.z;

+

+				vertexArray[ offset + 9 ]  = v4.x;

+				vertexArray[ offset + 10 ] = v4.y;

+				vertexArray[ offset + 11 ] = v4.z;

+

+				offset += 12;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglVertexBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, vertexArray, hint );

+

+		}

+

+		if ( dirtyMorphTargets ) {

+

+			for ( vk = 0, vkl = morphTargets.length; vk < vkl; vk ++ ) {

+

+				offset_morphTarget = 0;

+

+				for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+					chf = chunk_faces3[ f ];

+					face = obj_faces[ chf ];

+

+					// morph positions

+

+					v1 = morphTargets[ vk ].vertices[ face.a ];

+					v2 = morphTargets[ vk ].vertices[ face.b ];

+					v3 = morphTargets[ vk ].vertices[ face.c ];

+

+					vka = morphTargetsArrays[ vk ];

+

+					vka[ offset_morphTarget ] 	  = v1.x;

+					vka[ offset_morphTarget + 1 ] = v1.y;

+					vka[ offset_morphTarget + 2 ] = v1.z;

+

+					vka[ offset_morphTarget + 3 ] = v2.x;

+					vka[ offset_morphTarget + 4 ] = v2.y;

+					vka[ offset_morphTarget + 5 ] = v2.z;

+

+					vka[ offset_morphTarget + 6 ] = v3.x;

+					vka[ offset_morphTarget + 7 ] = v3.y;

+					vka[ offset_morphTarget + 8 ] = v3.z;

+

+					// morph normals

+

+					if ( material.morphNormals ) {

+

+						if ( needsSmoothNormals ) {

+

+							faceVertexNormals = morphNormals[ vk ].vertexNormals[ chf ];

+

+							n1 = faceVertexNormals.a;

+							n2 = faceVertexNormals.b;

+							n3 = faceVertexNormals.c;

+

+						} else {

+

+							n1 = morphNormals[ vk ].faceNormals[ chf ];

+							n2 = n1;

+							n3 = n1;

+

+						}

+

+						nka = morphNormalsArrays[ vk ];

+

+						nka[ offset_morphTarget ] 	  = n1.x;

+						nka[ offset_morphTarget + 1 ] = n1.y;

+						nka[ offset_morphTarget + 2 ] = n1.z;

+

+						nka[ offset_morphTarget + 3 ] = n2.x;

+						nka[ offset_morphTarget + 4 ] = n2.y;

+						nka[ offset_morphTarget + 5 ] = n2.z;

+

+						nka[ offset_morphTarget + 6 ] = n3.x;

+						nka[ offset_morphTarget + 7 ] = n3.y;

+						nka[ offset_morphTarget + 8 ] = n3.z;

+

+					}

+

+					//

+

+					offset_morphTarget += 9;

+

+				}

+

+				for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+					chf = chunk_faces4[ f ];

+					face = obj_faces[ chf ];

+

+					// morph positions

+

+					v1 = morphTargets[ vk ].vertices[ face.a ];

+					v2 = morphTargets[ vk ].vertices[ face.b ];

+					v3 = morphTargets[ vk ].vertices[ face.c ];

+					v4 = morphTargets[ vk ].vertices[ face.d ];

+

+					vka = morphTargetsArrays[ vk ];

+

+					vka[ offset_morphTarget ] 	  = v1.x;

+					vka[ offset_morphTarget + 1 ] = v1.y;

+					vka[ offset_morphTarget + 2 ] = v1.z;

+

+					vka[ offset_morphTarget + 3 ] = v2.x;

+					vka[ offset_morphTarget + 4 ] = v2.y;

+					vka[ offset_morphTarget + 5 ] = v2.z;

+

+					vka[ offset_morphTarget + 6 ] = v3.x;

+					vka[ offset_morphTarget + 7 ] = v3.y;

+					vka[ offset_morphTarget + 8 ] = v3.z;

+

+					vka[ offset_morphTarget + 9 ]  = v4.x;

+					vka[ offset_morphTarget + 10 ] = v4.y;

+					vka[ offset_morphTarget + 11 ] = v4.z;

+

+					// morph normals

+

+					if ( material.morphNormals ) {

+

+						if ( needsSmoothNormals ) {

+

+							faceVertexNormals = morphNormals[ vk ].vertexNormals[ chf ];

+

+							n1 = faceVertexNormals.a;

+							n2 = faceVertexNormals.b;

+							n3 = faceVertexNormals.c;

+							n4 = faceVertexNormals.d;

+

+						} else {

+

+							n1 = morphNormals[ vk ].faceNormals[ chf ];

+							n2 = n1;

+							n3 = n1;

+							n4 = n1;

+

+						}

+

+						nka = morphNormalsArrays[ vk ];

+

+						nka[ offset_morphTarget ] 	  = n1.x;

+						nka[ offset_morphTarget + 1 ] = n1.y;

+						nka[ offset_morphTarget + 2 ] = n1.z;

+

+						nka[ offset_morphTarget + 3 ] = n2.x;

+						nka[ offset_morphTarget + 4 ] = n2.y;

+						nka[ offset_morphTarget + 5 ] = n2.z;

+

+						nka[ offset_morphTarget + 6 ] = n3.x;

+						nka[ offset_morphTarget + 7 ] = n3.y;

+						nka[ offset_morphTarget + 8 ] = n3.z;

+

+						nka[ offset_morphTarget + 9 ]  = n4.x;

+						nka[ offset_morphTarget + 10 ] = n4.y;

+						nka[ offset_morphTarget + 11 ] = n4.z;

+

+					}

+

+					//

+

+					offset_morphTarget += 12;

+

+				}

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphTargetsBuffers[ vk ] );

+				_gl.bufferData( _gl.ARRAY_BUFFER, morphTargetsArrays[ vk ], hint );

+

+				if ( material.morphNormals ) {

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphNormalsBuffers[ vk ] );

+					_gl.bufferData( _gl.ARRAY_BUFFER, morphNormalsArrays[ vk ], hint );

+

+				}

+

+			}

+

+		}

+

+		if ( obj_skinWeights.length ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces3[ f ]	];

+

+				// weights

+

+				sw1 = obj_skinWeights[ face.a ];

+				sw2 = obj_skinWeights[ face.b ];

+				sw3 = obj_skinWeights[ face.c ];

+

+				skinWeightArray[ offset_skin ]     = sw1.x;

+				skinWeightArray[ offset_skin + 1 ] = sw1.y;

+				skinWeightArray[ offset_skin + 2 ] = sw1.z;

+				skinWeightArray[ offset_skin + 3 ] = sw1.w;

+

+				skinWeightArray[ offset_skin + 4 ] = sw2.x;

+				skinWeightArray[ offset_skin + 5 ] = sw2.y;

+				skinWeightArray[ offset_skin + 6 ] = sw2.z;

+				skinWeightArray[ offset_skin + 7 ] = sw2.w;

+

+				skinWeightArray[ offset_skin + 8 ]  = sw3.x;

+				skinWeightArray[ offset_skin + 9 ]  = sw3.y;

+				skinWeightArray[ offset_skin + 10 ] = sw3.z;

+				skinWeightArray[ offset_skin + 11 ] = sw3.w;

+

+				// indices

+

+				si1 = obj_skinIndices[ face.a ];

+				si2 = obj_skinIndices[ face.b ];

+				si3 = obj_skinIndices[ face.c ];

+

+				skinIndexArray[ offset_skin ]     = si1.x;

+				skinIndexArray[ offset_skin + 1 ] = si1.y;

+				skinIndexArray[ offset_skin + 2 ] = si1.z;

+				skinIndexArray[ offset_skin + 3 ] = si1.w;

+

+				skinIndexArray[ offset_skin + 4 ] = si2.x;

+				skinIndexArray[ offset_skin + 5 ] = si2.y;

+				skinIndexArray[ offset_skin + 6 ] = si2.z;

+				skinIndexArray[ offset_skin + 7 ] = si2.w;

+

+				skinIndexArray[ offset_skin + 8 ]  = si3.x;

+				skinIndexArray[ offset_skin + 9 ]  = si3.y;

+				skinIndexArray[ offset_skin + 10 ] = si3.z;

+				skinIndexArray[ offset_skin + 11 ] = si3.w;

+

+				offset_skin += 12;

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces4[ f ] ];

+

+				// weights

+

+				sw1 = obj_skinWeights[ face.a ];

+				sw2 = obj_skinWeights[ face.b ];

+				sw3 = obj_skinWeights[ face.c ];

+				sw4 = obj_skinWeights[ face.d ];

+

+				skinWeightArray[ offset_skin ]     = sw1.x;

+				skinWeightArray[ offset_skin + 1 ] = sw1.y;

+				skinWeightArray[ offset_skin + 2 ] = sw1.z;

+				skinWeightArray[ offset_skin + 3 ] = sw1.w;

+

+				skinWeightArray[ offset_skin + 4 ] = sw2.x;

+				skinWeightArray[ offset_skin + 5 ] = sw2.y;

+				skinWeightArray[ offset_skin + 6 ] = sw2.z;

+				skinWeightArray[ offset_skin + 7 ] = sw2.w;

+

+				skinWeightArray[ offset_skin + 8 ]  = sw3.x;

+				skinWeightArray[ offset_skin + 9 ]  = sw3.y;

+				skinWeightArray[ offset_skin + 10 ] = sw3.z;

+				skinWeightArray[ offset_skin + 11 ] = sw3.w;

+

+				skinWeightArray[ offset_skin + 12 ] = sw4.x;

+				skinWeightArray[ offset_skin + 13 ] = sw4.y;

+				skinWeightArray[ offset_skin + 14 ] = sw4.z;

+				skinWeightArray[ offset_skin + 15 ] = sw4.w;

+

+				// indices

+

+				si1 = obj_skinIndices[ face.a ];

+				si2 = obj_skinIndices[ face.b ];

+				si3 = obj_skinIndices[ face.c ];

+				si4 = obj_skinIndices[ face.d ];

+

+				skinIndexArray[ offset_skin ]     = si1.x;

+				skinIndexArray[ offset_skin + 1 ] = si1.y;

+				skinIndexArray[ offset_skin + 2 ] = si1.z;

+				skinIndexArray[ offset_skin + 3 ] = si1.w;

+

+				skinIndexArray[ offset_skin + 4 ] = si2.x;

+				skinIndexArray[ offset_skin + 5 ] = si2.y;

+				skinIndexArray[ offset_skin + 6 ] = si2.z;

+				skinIndexArray[ offset_skin + 7 ] = si2.w;

+

+				skinIndexArray[ offset_skin + 8 ]  = si3.x;

+				skinIndexArray[ offset_skin + 9 ]  = si3.y;

+				skinIndexArray[ offset_skin + 10 ] = si3.z;

+				skinIndexArray[ offset_skin + 11 ] = si3.w;

+

+				skinIndexArray[ offset_skin + 12 ] = si4.x;

+				skinIndexArray[ offset_skin + 13 ] = si4.y;

+				skinIndexArray[ offset_skin + 14 ] = si4.z;

+				skinIndexArray[ offset_skin + 15 ] = si4.w;

+

+				offset_skin += 16;

+

+			}

+

+			if ( offset_skin > 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglSkinIndicesBuffer );

+				_gl.bufferData( _gl.ARRAY_BUFFER, skinIndexArray, hint );

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglSkinWeightsBuffer );

+				_gl.bufferData( _gl.ARRAY_BUFFER, skinWeightArray, hint );

+

+			}

+

+		}

+

+		if ( dirtyColors && vertexColorType ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces3[ f ]	];

+

+				vertexColors = face.vertexColors;

+				faceColor = face.color;

+

+				if ( vertexColors.length === 3 && vertexColorType === THREE.VertexColors ) {

+

+					c1 = vertexColors[ 0 ];

+					c2 = vertexColors[ 1 ];

+					c3 = vertexColors[ 2 ];

+

+				} else {

+

+					c1 = faceColor;

+					c2 = faceColor;

+					c3 = faceColor;

+

+				}

+

+				colorArray[ offset_color ]     = c1.r;

+				colorArray[ offset_color + 1 ] = c1.g;

+				colorArray[ offset_color + 2 ] = c1.b;

+

+				colorArray[ offset_color + 3 ] = c2.r;

+				colorArray[ offset_color + 4 ] = c2.g;

+				colorArray[ offset_color + 5 ] = c2.b;

+

+				colorArray[ offset_color + 6 ] = c3.r;

+				colorArray[ offset_color + 7 ] = c3.g;

+				colorArray[ offset_color + 8 ] = c3.b;

+

+				offset_color += 9;

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces4[ f ] ];

+

+				vertexColors = face.vertexColors;

+				faceColor = face.color;

+

+				if ( vertexColors.length === 4 && vertexColorType === THREE.VertexColors ) {

+

+					c1 = vertexColors[ 0 ];

+					c2 = vertexColors[ 1 ];

+					c3 = vertexColors[ 2 ];

+					c4 = vertexColors[ 3 ];

+

+				} else {

+

+					c1 = faceColor;

+					c2 = faceColor;

+					c3 = faceColor;

+					c4 = faceColor;

+

+				}

+

+				colorArray[ offset_color ]     = c1.r;

+				colorArray[ offset_color + 1 ] = c1.g;

+				colorArray[ offset_color + 2 ] = c1.b;

+

+				colorArray[ offset_color + 3 ] = c2.r;

+				colorArray[ offset_color + 4 ] = c2.g;

+				colorArray[ offset_color + 5 ] = c2.b;

+

+				colorArray[ offset_color + 6 ] = c3.r;

+				colorArray[ offset_color + 7 ] = c3.g;

+				colorArray[ offset_color + 8 ] = c3.b;

+

+				colorArray[ offset_color + 9 ]  = c4.r;

+				colorArray[ offset_color + 10 ] = c4.g;

+				colorArray[ offset_color + 11 ] = c4.b;

+

+				offset_color += 12;

+

+			}

+

+			if ( offset_color > 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglColorBuffer );

+				_gl.bufferData( _gl.ARRAY_BUFFER, colorArray, hint );

+

+			}

+

+		}

+

+		if ( dirtyTangents && geometry.hasTangents ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces3[ f ]	];

+

+				vertexTangents = face.vertexTangents;

+

+				t1 = vertexTangents[ 0 ];

+				t2 = vertexTangents[ 1 ];

+				t3 = vertexTangents[ 2 ];

+

+				tangentArray[ offset_tangent ]     = t1.x;

+				tangentArray[ offset_tangent + 1 ] = t1.y;

+				tangentArray[ offset_tangent + 2 ] = t1.z;

+				tangentArray[ offset_tangent + 3 ] = t1.w;

+

+				tangentArray[ offset_tangent + 4 ] = t2.x;

+				tangentArray[ offset_tangent + 5 ] = t2.y;

+				tangentArray[ offset_tangent + 6 ] = t2.z;

+				tangentArray[ offset_tangent + 7 ] = t2.w;

+

+				tangentArray[ offset_tangent + 8 ]  = t3.x;

+				tangentArray[ offset_tangent + 9 ]  = t3.y;

+				tangentArray[ offset_tangent + 10 ] = t3.z;

+				tangentArray[ offset_tangent + 11 ] = t3.w;

+

+				offset_tangent += 12;

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces4[ f ] ];

+

+				vertexTangents = face.vertexTangents;

+

+				t1 = vertexTangents[ 0 ];

+				t2 = vertexTangents[ 1 ];

+				t3 = vertexTangents[ 2 ];

+				t4 = vertexTangents[ 3 ];

+

+				tangentArray[ offset_tangent ]     = t1.x;

+				tangentArray[ offset_tangent + 1 ] = t1.y;

+				tangentArray[ offset_tangent + 2 ] = t1.z;

+				tangentArray[ offset_tangent + 3 ] = t1.w;

+

+				tangentArray[ offset_tangent + 4 ] = t2.x;

+				tangentArray[ offset_tangent + 5 ] = t2.y;

+				tangentArray[ offset_tangent + 6 ] = t2.z;

+				tangentArray[ offset_tangent + 7 ] = t2.w;

+

+				tangentArray[ offset_tangent + 8 ]  = t3.x;

+				tangentArray[ offset_tangent + 9 ]  = t3.y;

+				tangentArray[ offset_tangent + 10 ] = t3.z;

+				tangentArray[ offset_tangent + 11 ] = t3.w;

+

+				tangentArray[ offset_tangent + 12 ] = t4.x;

+				tangentArray[ offset_tangent + 13 ] = t4.y;

+				tangentArray[ offset_tangent + 14 ] = t4.z;

+				tangentArray[ offset_tangent + 15 ] = t4.w;

+

+				offset_tangent += 16;

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglTangentBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, tangentArray, hint );

+

+		}

+

+		if ( dirtyNormals && normalType ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces3[ f ]	];

+

+				vertexNormals = face.vertexNormals;

+				faceNormal = face.normal;

+

+				if ( vertexNormals.length === 3 && needsSmoothNormals ) {

+

+					for ( i = 0; i < 3; i ++ ) {

+

+						vn = vertexNormals[ i ];

+

+						normalArray[ offset_normal ]     = vn.x;

+						normalArray[ offset_normal + 1 ] = vn.y;

+						normalArray[ offset_normal + 2 ] = vn.z;

+

+						offset_normal += 3;

+

+					}

+

+				} else {

+

+					for ( i = 0; i < 3; i ++ ) {

+

+						normalArray[ offset_normal ]     = faceNormal.x;

+						normalArray[ offset_normal + 1 ] = faceNormal.y;

+						normalArray[ offset_normal + 2 ] = faceNormal.z;

+

+						offset_normal += 3;

+

+					}

+

+				}

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				face = obj_faces[ chunk_faces4[ f ] ];

+

+				vertexNormals = face.vertexNormals;

+				faceNormal = face.normal;

+

+				if ( vertexNormals.length === 4 && needsSmoothNormals ) {

+

+					for ( i = 0; i < 4; i ++ ) {

+

+						vn = vertexNormals[ i ];

+

+						normalArray[ offset_normal ]     = vn.x;

+						normalArray[ offset_normal + 1 ] = vn.y;

+						normalArray[ offset_normal + 2 ] = vn.z;

+

+						offset_normal += 3;

+

+					}

+

+				} else {

+

+					for ( i = 0; i < 4; i ++ ) {

+

+						normalArray[ offset_normal ]     = faceNormal.x;

+						normalArray[ offset_normal + 1 ] = faceNormal.y;

+						normalArray[ offset_normal + 2 ] = faceNormal.z;

+

+						offset_normal += 3;

+

+					}

+

+				}

+

+			}

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglNormalBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, normalArray, hint );

+

+		}

+

+		if ( dirtyUvs && obj_uvs && uvType ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				fi = chunk_faces3[ f ];

+

+				uv = obj_uvs[ fi ];

+

+				if ( uv === undefined ) continue;

+

+				for ( i = 0; i < 3; i ++ ) {

+

+					uvi = uv[ i ];

+

+					uvArray[ offset_uv ]     = uvi.x;

+					uvArray[ offset_uv + 1 ] = uvi.y;

+

+					offset_uv += 2;

+

+				}

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				fi = chunk_faces4[ f ];

+

+				uv = obj_uvs[ fi ];

+

+				if ( uv === undefined ) continue;

+

+				for ( i = 0; i < 4; i ++ ) {

+

+					uvi = uv[ i ];

+

+					uvArray[ offset_uv ]     = uvi.x;

+					uvArray[ offset_uv + 1 ] = uvi.y;

+

+					offset_uv += 2;

+

+				}

+

+			}

+

+			if ( offset_uv > 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglUVBuffer );

+				_gl.bufferData( _gl.ARRAY_BUFFER, uvArray, hint );

+

+			}

+

+		}

+

+		if ( dirtyUvs && obj_uvs2 && uvType ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				fi = chunk_faces3[ f ];

+

+				uv2 = obj_uvs2[ fi ];

+

+				if ( uv2 === undefined ) continue;

+

+				for ( i = 0; i < 3; i ++ ) {

+

+					uv2i = uv2[ i ];

+

+					uv2Array[ offset_uv2 ]     = uv2i.x;

+					uv2Array[ offset_uv2 + 1 ] = uv2i.y;

+

+					offset_uv2 += 2;

+

+				}

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				fi = chunk_faces4[ f ];

+

+				uv2 = obj_uvs2[ fi ];

+

+				if ( uv2 === undefined ) continue;

+

+				for ( i = 0; i < 4; i ++ ) {

+

+					uv2i = uv2[ i ];

+

+					uv2Array[ offset_uv2 ]     = uv2i.x;

+					uv2Array[ offset_uv2 + 1 ] = uv2i.y;

+

+					offset_uv2 += 2;

+

+				}

+

+			}

+

+			if ( offset_uv2 > 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglUV2Buffer );

+				_gl.bufferData( _gl.ARRAY_BUFFER, uv2Array, hint );

+

+			}

+

+		}

+

+		if ( dirtyElements ) {

+

+			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+				faceArray[ offset_face ] 	 = vertexIndex;

+				faceArray[ offset_face + 1 ] = vertexIndex + 1;

+				faceArray[ offset_face + 2 ] = vertexIndex + 2;

+

+				offset_face += 3;

+

+				lineArray[ offset_line ]     = vertexIndex;

+				lineArray[ offset_line + 1 ] = vertexIndex + 1;

+

+				lineArray[ offset_line + 2 ] = vertexIndex;

+				lineArray[ offset_line + 3 ] = vertexIndex + 2;

+

+				lineArray[ offset_line + 4 ] = vertexIndex + 1;

+				lineArray[ offset_line + 5 ] = vertexIndex + 2;

+

+				offset_line += 6;

+

+				vertexIndex += 3;

+

+			}

+

+			for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+				faceArray[ offset_face ]     = vertexIndex;

+				faceArray[ offset_face + 1 ] = vertexIndex + 1;

+				faceArray[ offset_face + 2 ] = vertexIndex + 3;

+

+				faceArray[ offset_face + 3 ] = vertexIndex + 1;

+				faceArray[ offset_face + 4 ] = vertexIndex + 2;

+				faceArray[ offset_face + 5 ] = vertexIndex + 3;

+

+				offset_face += 6;

+

+				lineArray[ offset_line ]     = vertexIndex;

+				lineArray[ offset_line + 1 ] = vertexIndex + 1;

+

+				lineArray[ offset_line + 2 ] = vertexIndex;

+				lineArray[ offset_line + 3 ] = vertexIndex + 3;

+

+				lineArray[ offset_line + 4 ] = vertexIndex + 1;

+				lineArray[ offset_line + 5 ] = vertexIndex + 2;

+

+				lineArray[ offset_line + 6 ] = vertexIndex + 2;

+				lineArray[ offset_line + 7 ] = vertexIndex + 3;

+

+				offset_line += 8;

+

+				vertexIndex += 4;

+

+			}

+

+			_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, geometryGroup.__webglFaceBuffer );

+			_gl.bufferData( _gl.ELEMENT_ARRAY_BUFFER, faceArray, hint );

+

+			_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, geometryGroup.__webglLineBuffer );

+			_gl.bufferData( _gl.ELEMENT_ARRAY_BUFFER, lineArray, hint );

+

+		}

+

+		if ( customAttributes ) {

+

+			for ( i = 0, il = customAttributes.length; i < il; i ++ ) {

+

+				customAttribute = customAttributes[ i ];

+

+				if ( ! customAttribute.__original.needsUpdate ) continue;

+

+				offset_custom = 0;

+				offset_customSrc = 0;

+

+				if ( customAttribute.size === 1 ) {

+

+					if ( customAttribute.boundTo === undefined || customAttribute.boundTo === "vertices" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces3[ f ]	];

+

+							customAttribute.array[ offset_custom ] 	   = customAttribute.value[ face.a ];

+							customAttribute.array[ offset_custom + 1 ] = customAttribute.value[ face.b ];

+							customAttribute.array[ offset_custom + 2 ] = customAttribute.value[ face.c ];

+

+							offset_custom += 3;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces4[ f ] ];

+

+							customAttribute.array[ offset_custom ] 	   = customAttribute.value[ face.a ];

+							customAttribute.array[ offset_custom + 1 ] = customAttribute.value[ face.b ];

+							customAttribute.array[ offset_custom + 2 ] = customAttribute.value[ face.c ];

+							customAttribute.array[ offset_custom + 3 ] = customAttribute.value[ face.d ];

+

+							offset_custom += 4;

+

+						}

+

+					} else if ( customAttribute.boundTo === "faces" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces3[ f ] ];

+

+							customAttribute.array[ offset_custom ] 	   = value;

+							customAttribute.array[ offset_custom + 1 ] = value;

+							customAttribute.array[ offset_custom + 2 ] = value;

+

+							offset_custom += 3;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces4[ f ] ];

+

+							customAttribute.array[ offset_custom ] 	   = value;

+							customAttribute.array[ offset_custom + 1 ] = value;

+							customAttribute.array[ offset_custom + 2 ] = value;

+							customAttribute.array[ offset_custom + 3 ] = value;

+

+							offset_custom += 4;

+

+						}

+

+					}

+

+				} else if ( customAttribute.size === 2 ) {

+

+					if ( customAttribute.boundTo === undefined || customAttribute.boundTo === "vertices" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces3[ f ]	];

+

+							v1 = customAttribute.value[ face.a ];

+							v2 = customAttribute.value[ face.b ];

+							v3 = customAttribute.value[ face.c ];

+

+							customAttribute.array[ offset_custom ] 	   = v1.x;

+							customAttribute.array[ offset_custom + 1 ] = v1.y;

+

+							customAttribute.array[ offset_custom + 2 ] = v2.x;

+							customAttribute.array[ offset_custom + 3 ] = v2.y;

+

+							customAttribute.array[ offset_custom + 4 ] = v3.x;

+							customAttribute.array[ offset_custom + 5 ] = v3.y;

+

+							offset_custom += 6;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces4[ f ] ];

+

+							v1 = customAttribute.value[ face.a ];

+							v2 = customAttribute.value[ face.b ];

+							v3 = customAttribute.value[ face.c ];

+							v4 = customAttribute.value[ face.d ];

+

+							customAttribute.array[ offset_custom ] 	   = v1.x;

+							customAttribute.array[ offset_custom + 1 ] = v1.y;

+

+							customAttribute.array[ offset_custom + 2 ] = v2.x;

+							customAttribute.array[ offset_custom + 3 ] = v2.y;

+

+							customAttribute.array[ offset_custom + 4 ] = v3.x;

+							customAttribute.array[ offset_custom + 5 ] = v3.y;

+

+							customAttribute.array[ offset_custom + 6 ] = v4.x;

+							customAttribute.array[ offset_custom + 7 ] = v4.y;

+

+							offset_custom += 8;

+

+						}

+

+					} else if ( customAttribute.boundTo === "faces" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces3[ f ] ];

+

+							v1 = value;

+							v2 = value;

+							v3 = value;

+

+							customAttribute.array[ offset_custom ] 	   = v1.x;

+							customAttribute.array[ offset_custom + 1 ] = v1.y;

+

+							customAttribute.array[ offset_custom + 2 ] = v2.x;

+							customAttribute.array[ offset_custom + 3 ] = v2.y;

+

+							customAttribute.array[ offset_custom + 4 ] = v3.x;

+							customAttribute.array[ offset_custom + 5 ] = v3.y;

+

+							offset_custom += 6;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces4[ f ] ];

+

+							v1 = value;

+							v2 = value;

+							v3 = value;

+							v4 = value;

+

+							customAttribute.array[ offset_custom ] 	   = v1.x;

+							customAttribute.array[ offset_custom + 1 ] = v1.y;

+

+							customAttribute.array[ offset_custom + 2 ] = v2.x;

+							customAttribute.array[ offset_custom + 3 ] = v2.y;

+

+							customAttribute.array[ offset_custom + 4 ] = v3.x;

+							customAttribute.array[ offset_custom + 5 ] = v3.y;

+

+							customAttribute.array[ offset_custom + 6 ] = v4.x;

+							customAttribute.array[ offset_custom + 7 ] = v4.y;

+

+							offset_custom += 8;

+

+						}

+

+					}

+

+				} else if ( customAttribute.size === 3 ) {

+

+					var pp;

+

+					if ( customAttribute.type === "c" ) {

+

+						pp = [ "r", "g", "b" ];

+

+					} else {

+

+						pp = [ "x", "y", "z" ];

+

+					}

+

+					if ( customAttribute.boundTo === undefined || customAttribute.boundTo === "vertices" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces3[ f ]	];

+

+							v1 = customAttribute.value[ face.a ];

+							v2 = customAttribute.value[ face.b ];

+							v3 = customAttribute.value[ face.c ];

+

+							customAttribute.array[ offset_custom ] 	   = v1[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 1 ] = v1[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 2 ] = v1[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 3 ] = v2[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 4 ] = v2[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 5 ] = v2[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 6 ] = v3[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 7 ] = v3[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 8 ] = v3[ pp[ 2 ] ];

+

+							offset_custom += 9;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces4[ f ] ];

+

+							v1 = customAttribute.value[ face.a ];

+							v2 = customAttribute.value[ face.b ];

+							v3 = customAttribute.value[ face.c ];

+							v4 = customAttribute.value[ face.d ];

+

+							customAttribute.array[ offset_custom  ] 	= v1[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 1  ] = v1[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 2  ] = v1[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 3  ] = v2[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 4  ] = v2[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 5  ] = v2[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 6  ] = v3[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 7  ] = v3[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 8  ] = v3[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 9  ] = v4[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 10 ] = v4[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 11 ] = v4[ pp[ 2 ] ];

+

+							offset_custom += 12;

+

+						}

+

+					} else if ( customAttribute.boundTo === "faces" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces3[ f ] ];

+

+							v1 = value;

+							v2 = value;

+							v3 = value;

+

+							customAttribute.array[ offset_custom ] 	   = v1[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 1 ] = v1[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 2 ] = v1[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 3 ] = v2[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 4 ] = v2[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 5 ] = v2[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 6 ] = v3[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 7 ] = v3[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 8 ] = v3[ pp[ 2 ] ];

+

+							offset_custom += 9;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces4[ f ] ];

+

+							v1 = value;

+							v2 = value;

+							v3 = value;

+							v4 = value;

+

+							customAttribute.array[ offset_custom  ] 	= v1[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 1  ] = v1[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 2  ] = v1[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 3  ] = v2[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 4  ] = v2[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 5  ] = v2[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 6  ] = v3[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 7  ] = v3[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 8  ] = v3[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 9  ] = v4[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 10 ] = v4[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 11 ] = v4[ pp[ 2 ] ];

+

+							offset_custom += 12;

+

+						}

+

+					} else if ( customAttribute.boundTo === "faceVertices" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces3[ f ] ];

+

+							v1 = value[ 0 ];

+							v2 = value[ 1 ];

+							v3 = value[ 2 ];

+

+							customAttribute.array[ offset_custom ] 	   = v1[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 1 ] = v1[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 2 ] = v1[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 3 ] = v2[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 4 ] = v2[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 5 ] = v2[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 6 ] = v3[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 7 ] = v3[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 8 ] = v3[ pp[ 2 ] ];

+

+							offset_custom += 9;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces4[ f ] ];

+

+							v1 = value[ 0 ];

+							v2 = value[ 1 ];

+							v3 = value[ 2 ];

+							v4 = value[ 3 ];

+

+							customAttribute.array[ offset_custom  ] 	= v1[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 1  ] = v1[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 2  ] = v1[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 3  ] = v2[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 4  ] = v2[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 5  ] = v2[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 6  ] = v3[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 7  ] = v3[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 8  ] = v3[ pp[ 2 ] ];

+

+							customAttribute.array[ offset_custom + 9  ] = v4[ pp[ 0 ] ];

+							customAttribute.array[ offset_custom + 10 ] = v4[ pp[ 1 ] ];

+							customAttribute.array[ offset_custom + 11 ] = v4[ pp[ 2 ] ];

+

+							offset_custom += 12;

+

+						}

+

+					}

+

+				} else if ( customAttribute.size === 4 ) {

+

+					if ( customAttribute.boundTo === undefined || customAttribute.boundTo === "vertices" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces3[ f ]	];

+

+							v1 = customAttribute.value[ face.a ];

+							v2 = customAttribute.value[ face.b ];

+							v3 = customAttribute.value[ face.c ];

+

+							customAttribute.array[ offset_custom  ] 	= v1.x;

+							customAttribute.array[ offset_custom + 1  ] = v1.y;

+							customAttribute.array[ offset_custom + 2  ] = v1.z;

+							customAttribute.array[ offset_custom + 3  ] = v1.w;

+

+							customAttribute.array[ offset_custom + 4  ] = v2.x;

+							customAttribute.array[ offset_custom + 5  ] = v2.y;

+							customAttribute.array[ offset_custom + 6  ] = v2.z;

+							customAttribute.array[ offset_custom + 7  ] = v2.w;

+

+							customAttribute.array[ offset_custom + 8  ] = v3.x;

+							customAttribute.array[ offset_custom + 9  ] = v3.y;

+							customAttribute.array[ offset_custom + 10 ] = v3.z;

+							customAttribute.array[ offset_custom + 11 ] = v3.w;

+

+							offset_custom += 12;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							face = obj_faces[ chunk_faces4[ f ] ];

+

+							v1 = customAttribute.value[ face.a ];

+							v2 = customAttribute.value[ face.b ];

+							v3 = customAttribute.value[ face.c ];

+							v4 = customAttribute.value[ face.d ];

+

+							customAttribute.array[ offset_custom  ] 	= v1.x;

+							customAttribute.array[ offset_custom + 1  ] = v1.y;

+							customAttribute.array[ offset_custom + 2  ] = v1.z;

+							customAttribute.array[ offset_custom + 3  ] = v1.w;

+

+							customAttribute.array[ offset_custom + 4  ] = v2.x;

+							customAttribute.array[ offset_custom + 5  ] = v2.y;

+							customAttribute.array[ offset_custom + 6  ] = v2.z;

+							customAttribute.array[ offset_custom + 7  ] = v2.w;

+

+							customAttribute.array[ offset_custom + 8  ] = v3.x;

+							customAttribute.array[ offset_custom + 9  ] = v3.y;

+							customAttribute.array[ offset_custom + 10 ] = v3.z;

+							customAttribute.array[ offset_custom + 11 ] = v3.w;

+

+							customAttribute.array[ offset_custom + 12 ] = v4.x;

+							customAttribute.array[ offset_custom + 13 ] = v4.y;

+							customAttribute.array[ offset_custom + 14 ] = v4.z;

+							customAttribute.array[ offset_custom + 15 ] = v4.w;

+

+							offset_custom += 16;

+

+						}

+

+					} else if ( customAttribute.boundTo === "faces" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces3[ f ] ];

+

+							v1 = value;

+							v2 = value;

+							v3 = value;

+

+							customAttribute.array[ offset_custom  ] 	= v1.x;

+							customAttribute.array[ offset_custom + 1  ] = v1.y;

+							customAttribute.array[ offset_custom + 2  ] = v1.z;

+							customAttribute.array[ offset_custom + 3  ] = v1.w;

+

+							customAttribute.array[ offset_custom + 4  ] = v2.x;

+							customAttribute.array[ offset_custom + 5  ] = v2.y;

+							customAttribute.array[ offset_custom + 6  ] = v2.z;

+							customAttribute.array[ offset_custom + 7  ] = v2.w;

+

+							customAttribute.array[ offset_custom + 8  ] = v3.x;

+							customAttribute.array[ offset_custom + 9  ] = v3.y;

+							customAttribute.array[ offset_custom + 10 ] = v3.z;

+							customAttribute.array[ offset_custom + 11 ] = v3.w;

+

+							offset_custom += 12;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces4[ f ] ];

+

+							v1 = value;

+							v2 = value;

+							v3 = value;

+							v4 = value;

+

+							customAttribute.array[ offset_custom  ] 	= v1.x;

+							customAttribute.array[ offset_custom + 1  ] = v1.y;

+							customAttribute.array[ offset_custom + 2  ] = v1.z;

+							customAttribute.array[ offset_custom + 3  ] = v1.w;

+

+							customAttribute.array[ offset_custom + 4  ] = v2.x;

+							customAttribute.array[ offset_custom + 5  ] = v2.y;

+							customAttribute.array[ offset_custom + 6  ] = v2.z;

+							customAttribute.array[ offset_custom + 7  ] = v2.w;

+

+							customAttribute.array[ offset_custom + 8  ] = v3.x;

+							customAttribute.array[ offset_custom + 9  ] = v3.y;

+							customAttribute.array[ offset_custom + 10 ] = v3.z;

+							customAttribute.array[ offset_custom + 11 ] = v3.w;

+

+							customAttribute.array[ offset_custom + 12 ] = v4.x;

+							customAttribute.array[ offset_custom + 13 ] = v4.y;

+							customAttribute.array[ offset_custom + 14 ] = v4.z;

+							customAttribute.array[ offset_custom + 15 ] = v4.w;

+

+							offset_custom += 16;

+

+						}

+

+					} else if ( customAttribute.boundTo === "faceVertices" ) {

+

+						for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces3[ f ] ];

+

+							v1 = value[ 0 ];

+							v2 = value[ 1 ];

+							v3 = value[ 2 ];

+

+							customAttribute.array[ offset_custom  ] 	= v1.x;

+							customAttribute.array[ offset_custom + 1  ] = v1.y;

+							customAttribute.array[ offset_custom + 2  ] = v1.z;

+							customAttribute.array[ offset_custom + 3  ] = v1.w;

+

+							customAttribute.array[ offset_custom + 4  ] = v2.x;

+							customAttribute.array[ offset_custom + 5  ] = v2.y;

+							customAttribute.array[ offset_custom + 6  ] = v2.z;

+							customAttribute.array[ offset_custom + 7  ] = v2.w;

+

+							customAttribute.array[ offset_custom + 8  ] = v3.x;

+							customAttribute.array[ offset_custom + 9  ] = v3.y;

+							customAttribute.array[ offset_custom + 10 ] = v3.z;

+							customAttribute.array[ offset_custom + 11 ] = v3.w;

+

+							offset_custom += 12;

+

+						}

+

+						for ( f = 0, fl = chunk_faces4.length; f < fl; f ++ ) {

+

+							value = customAttribute.value[ chunk_faces4[ f ] ];

+

+							v1 = value[ 0 ];

+							v2 = value[ 1 ];

+							v3 = value[ 2 ];

+							v4 = value[ 3 ];

+

+							customAttribute.array[ offset_custom  ] 	= v1.x;

+							customAttribute.array[ offset_custom + 1  ] = v1.y;

+							customAttribute.array[ offset_custom + 2  ] = v1.z;

+							customAttribute.array[ offset_custom + 3  ] = v1.w;

+

+							customAttribute.array[ offset_custom + 4  ] = v2.x;

+							customAttribute.array[ offset_custom + 5  ] = v2.y;

+							customAttribute.array[ offset_custom + 6  ] = v2.z;

+							customAttribute.array[ offset_custom + 7  ] = v2.w;

+

+							customAttribute.array[ offset_custom + 8  ] = v3.x;

+							customAttribute.array[ offset_custom + 9  ] = v3.y;

+							customAttribute.array[ offset_custom + 10 ] = v3.z;

+							customAttribute.array[ offset_custom + 11 ] = v3.w;

+

+							customAttribute.array[ offset_custom + 12 ] = v4.x;

+							customAttribute.array[ offset_custom + 13 ] = v4.y;

+							customAttribute.array[ offset_custom + 14 ] = v4.z;

+							customAttribute.array[ offset_custom + 15 ] = v4.w;

+

+							offset_custom += 16;

+

+						}

+

+					}

+

+				}

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, customAttribute.buffer );

+				_gl.bufferData( _gl.ARRAY_BUFFER, customAttribute.array, hint );

+

+			}

+

+		}

+

+		if ( dispose ) {

+

+			delete geometryGroup.__inittedArrays;

+			delete geometryGroup.__colorArray;

+			delete geometryGroup.__normalArray;

+			delete geometryGroup.__tangentArray;

+			delete geometryGroup.__uvArray;

+			delete geometryGroup.__uv2Array;

+			delete geometryGroup.__faceArray;

+			delete geometryGroup.__vertexArray;

+			delete geometryGroup.__lineArray;

+			delete geometryGroup.__skinIndexArray;

+			delete geometryGroup.__skinWeightArray;

+

+		}

+

+	};

+

+	function setDirectBuffers ( geometry, hint, dispose ) {

+

+		var attributes = geometry.attributes;

+

+		var index = attributes[ "index" ];

+		var position = attributes[ "position" ];

+		var normal = attributes[ "normal" ];

+		var uv = attributes[ "uv" ];

+		var color = attributes[ "color" ];

+		var tangent = attributes[ "tangent" ];

+

+		if ( geometry.elementsNeedUpdate && index !== undefined ) {

+

+			_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, index.buffer );

+			_gl.bufferData( _gl.ELEMENT_ARRAY_BUFFER, index.array, hint );

+

+		}

+

+		if ( geometry.verticesNeedUpdate && position !== undefined ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, position.buffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, position.array, hint );

+

+		}

+

+		if ( geometry.normalsNeedUpdate && normal !== undefined ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, normal.buffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, normal.array, hint );

+

+		}

+

+		if ( geometry.uvsNeedUpdate && uv !== undefined ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, uv.buffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, uv.array, hint );

+

+		}

+

+		if ( geometry.colorsNeedUpdate && color !== undefined ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, color.buffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, color.array, hint );

+

+		}

+

+		if ( geometry.tangentsNeedUpdate && tangent !== undefined ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, tangent.buffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, tangent.array, hint );

+

+		}

+

+		if ( dispose ) {

+

+			for ( var i in geometry.attributes ) {

+

+				delete geometry.attributes[ i ].array;

+

+			}

+

+		}

+

+	};

+

+	// Buffer rendering

+

+	this.renderBufferImmediate = function ( object, program, material ) {

+

+		if ( object.hasPositions && ! object.__webglVertexBuffer ) object.__webglVertexBuffer = _gl.createBuffer();

+		if ( object.hasNormals && ! object.__webglNormalBuffer ) object.__webglNormalBuffer = _gl.createBuffer();

+		if ( object.hasUvs && ! object.__webglUvBuffer ) object.__webglUvBuffer = _gl.createBuffer();

+		if ( object.hasColors && ! object.__webglColorBuffer ) object.__webglColorBuffer = _gl.createBuffer();

+

+		if ( object.hasPositions ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, object.__webglVertexBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, object.positionArray, _gl.DYNAMIC_DRAW );

+			_gl.enableVertexAttribArray( program.attributes.position );

+			_gl.vertexAttribPointer( program.attributes.position, 3, _gl.FLOAT, false, 0, 0 );

+

+		}

+

+		if ( object.hasNormals ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, object.__webglNormalBuffer );

+

+			if ( material.shading === THREE.FlatShading ) {

+

+				var nx, ny, nz,

+					nax, nbx, ncx, nay, nby, ncy, naz, nbz, ncz,

+					normalArray,

+					i, il = object.count * 3;

+

+				for( i = 0; i < il; i += 9 ) {

+

+					normalArray = object.normalArray;

+

+					nax  = normalArray[ i ];

+					nay  = normalArray[ i + 1 ];

+					naz  = normalArray[ i + 2 ];

+

+					nbx  = normalArray[ i + 3 ];

+					nby  = normalArray[ i + 4 ];

+					nbz  = normalArray[ i + 5 ];

+

+					ncx  = normalArray[ i + 6 ];

+					ncy  = normalArray[ i + 7 ];

+					ncz  = normalArray[ i + 8 ];

+

+					nx = ( nax + nbx + ncx ) / 3;

+					ny = ( nay + nby + ncy ) / 3;

+					nz = ( naz + nbz + ncz ) / 3;

+

+					normalArray[ i ] 	 = nx;

+					normalArray[ i + 1 ] = ny;

+					normalArray[ i + 2 ] = nz;

+

+					normalArray[ i + 3 ] = nx;

+					normalArray[ i + 4 ] = ny;

+					normalArray[ i + 5 ] = nz;

+

+					normalArray[ i + 6 ] = nx;

+					normalArray[ i + 7 ] = ny;

+					normalArray[ i + 8 ] = nz;

+

+				}

+

+			}

+

+			_gl.bufferData( _gl.ARRAY_BUFFER, object.normalArray, _gl.DYNAMIC_DRAW );

+			_gl.enableVertexAttribArray( program.attributes.normal );

+			_gl.vertexAttribPointer( program.attributes.normal, 3, _gl.FLOAT, false, 0, 0 );

+

+		}

+

+		if ( object.hasUvs && material.map ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, object.__webglUvBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, object.uvArray, _gl.DYNAMIC_DRAW );

+			_gl.enableVertexAttribArray( program.attributes.uv );

+			_gl.vertexAttribPointer( program.attributes.uv, 2, _gl.FLOAT, false, 0, 0 );

+

+		}

+

+		if ( object.hasColors && material.vertexColors !== THREE.NoColors ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, object.__webglColorBuffer );

+			_gl.bufferData( _gl.ARRAY_BUFFER, object.colorArray, _gl.DYNAMIC_DRAW );

+			_gl.enableVertexAttribArray( program.attributes.color );

+			_gl.vertexAttribPointer( program.attributes.color, 3, _gl.FLOAT, false, 0, 0 );

+

+		}

+

+		_gl.drawArrays( _gl.TRIANGLES, 0, object.count );

+

+		object.count = 0;

+

+	};

+

+	this.renderBufferDirect = function ( camera, lights, fog, material, geometry, object ) {

+

+		if ( material.visible === false ) return;

+

+		var program, attributes, linewidth, primitives, a, attribute;

+

+		program = setProgram( camera, lights, fog, material, object );

+

+		attributes = program.attributes;

+

+		var updateBuffers = false,

+			wireframeBit = material.wireframe ? 1 : 0,

+			geometryHash = ( geometry.id * 0xffffff ) + ( program.id * 2 ) + wireframeBit;

+

+		if ( geometryHash !== _currentGeometryGroupHash ) {

+

+			_currentGeometryGroupHash = geometryHash;

+			updateBuffers = true;

+

+		}

+

+		if ( updateBuffers ) {

+

+			disableAttributes();

+

+		}

+

+		// render mesh

+

+		if ( object instanceof THREE.Mesh ) {

+

+			var index = geometry.attributes[ "index" ];

+

+			// indexed triangles

+

+			if ( index ) {

+

+				var offsets = geometry.offsets;

+

+				// if there is more than 1 chunk

+				// must set attribute pointers to use new offsets for each chunk

+				// even if geometry and materials didn't change

+

+				if ( offsets.length > 1 ) updateBuffers = true;

+

+				for ( var i = 0, il = offsets.length; i < il; i ++ ) {

+

+					var startIndex = offsets[ i ].index;

+

+					if ( updateBuffers ) {

+

+						// vertices

+

+						var position = geometry.attributes[ "position" ];

+						var positionSize = position.itemSize;

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, position.buffer );

+						enableAttribute( attributes.position );

+						_gl.vertexAttribPointer( attributes.position, positionSize, _gl.FLOAT, false, 0, startIndex * positionSize * 4 ); // 4 bytes per Float32

+

+						// normals

+

+						var normal = geometry.attributes[ "normal" ];

+

+						if ( attributes.normal >= 0 && normal ) {

+

+							var normalSize = normal.itemSize;

+

+							_gl.bindBuffer( _gl.ARRAY_BUFFER, normal.buffer );

+							enableAttribute( attributes.normal );

+							_gl.vertexAttribPointer( attributes.normal, normalSize, _gl.FLOAT, false, 0, startIndex * normalSize * 4 );

+

+						}

+

+						// uvs

+

+						var uv = geometry.attributes[ "uv" ];

+

+						if ( attributes.uv >= 0 && uv ) {

+

+							var uvSize = uv.itemSize;

+

+							_gl.bindBuffer( _gl.ARRAY_BUFFER, uv.buffer );

+							enableAttribute( attributes.uv );

+							_gl.vertexAttribPointer( attributes.uv, uvSize, _gl.FLOAT, false, 0, startIndex * uvSize * 4 );

+

+						}

+

+						// colors

+

+						var color = geometry.attributes[ "color" ];

+

+						if ( attributes.color >= 0 && color ) {

+

+							var colorSize = color.itemSize;

+

+							_gl.bindBuffer( _gl.ARRAY_BUFFER, color.buffer );

+							enableAttribute( attributes.color );

+							_gl.vertexAttribPointer( attributes.color, colorSize, _gl.FLOAT, false, 0, startIndex * colorSize * 4 );

+

+						}

+

+						// tangents

+

+						var tangent = geometry.attributes[ "tangent" ];

+

+						if ( attributes.tangent >= 0 && tangent ) {

+

+							var tangentSize = tangent.itemSize;

+

+							_gl.bindBuffer( _gl.ARRAY_BUFFER, tangent.buffer );

+							enableAttribute( attributes.tangent );

+							_gl.vertexAttribPointer( attributes.tangent, tangentSize, _gl.FLOAT, false, 0, startIndex * tangentSize * 4 );

+

+						}

+

+						// indices

+

+						_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, index.buffer );

+

+					}

+

+					// render indexed triangles

+

+					_gl.drawElements( _gl.TRIANGLES, offsets[ i ].count, _gl.UNSIGNED_SHORT, offsets[ i ].start * 2 ); // 2 bytes per Uint16

+

+					_this.info.render.calls ++;

+					_this.info.render.vertices += offsets[ i ].count; // not really true, here vertices can be shared

+					_this.info.render.faces += offsets[ i ].count / 3;

+

+				}

+

+			// non-indexed triangles

+

+			} else {

+

+				if ( updateBuffers ) {

+

+					// vertices

+

+					var position = geometry.attributes[ "position" ];

+					var positionSize = position.itemSize;

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, position.buffer );

+					enableAttribute( attributes.position );

+					_gl.vertexAttribPointer( attributes.position, positionSize, _gl.FLOAT, false, 0, 0 );

+

+					// normals

+

+					var normal = geometry.attributes[ "normal" ];

+

+					if ( attributes.normal >= 0 && normal ) {

+

+						var normalSize = normal.itemSize;

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, normal.buffer );

+						enableAttribute( attributes.normal );

+						_gl.vertexAttribPointer( attributes.normal, normalSize, _gl.FLOAT, false, 0, 0 );

+

+					}

+

+					// uvs

+

+					var uv = geometry.attributes[ "uv" ];

+

+					if ( attributes.uv >= 0 && uv ) {

+

+						var uvSize = uv.itemSize;

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, uv.buffer );

+						enableAttribute( attributes.uv );

+						_gl.vertexAttribPointer( attributes.uv, uvSize, _gl.FLOAT, false, 0, 0 );

+

+					}

+

+					// colors

+

+					var color = geometry.attributes[ "color" ];

+

+					if ( attributes.color >= 0 && color ) {

+

+						var colorSize = color.itemSize;

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, color.buffer );

+						enableAttribute( attributes.color );

+						_gl.vertexAttribPointer( attributes.color, colorSize, _gl.FLOAT, false, 0, 0 );

+

+					}

+

+					// tangents

+

+					var tangent = geometry.attributes[ "tangent" ];

+

+					if ( attributes.tangent >= 0 && tangent ) {

+

+						var tangentSize = tangent.itemSize;

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, tangent.buffer );

+						enableAttribute( attributes.tangent );

+						_gl.vertexAttribPointer( attributes.tangent, tangentSize, _gl.FLOAT, false, 0, 0 );

+

+					}

+

+				}

+

+				// render non-indexed triangles

+

+				_gl.drawArrays( _gl.TRIANGLES, 0, position.numItems / 3 );

+

+				_this.info.render.calls ++;

+				_this.info.render.vertices += position.numItems / 3;

+				_this.info.render.faces += position.numItems / 3 / 3;

+

+			}

+

+		// render particles

+

+		} else if ( object instanceof THREE.ParticleSystem ) {

+

+			if ( updateBuffers ) {

+

+				// vertices

+

+				var position = geometry.attributes[ "position" ];

+				var positionSize = position.itemSize;

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, position.buffer );

+				enableAttribute( attributes.position );

+				_gl.vertexAttribPointer( attributes.position, positionSize, _gl.FLOAT, false, 0, 0 );

+

+				// colors

+

+				var color = geometry.attributes[ "color" ];

+

+				if ( attributes.color >= 0 && color ) {

+

+					var colorSize = color.itemSize;

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, color.buffer );

+					enableAttribute( attributes.color );

+					_gl.vertexAttribPointer( attributes.color, colorSize, _gl.FLOAT, false, 0, 0 );

+

+				}

+

+				// render particles

+

+				_gl.drawArrays( _gl.POINTS, 0, position.numItems / 3 );

+

+				_this.info.render.calls ++;

+				_this.info.render.points += position.numItems / 3;

+

+			}

+

+		} else if ( object instanceof THREE.Line ) {

+

+			if ( updateBuffers ) {

+

+				// vertices

+

+				var position = geometry.attributes[ "position" ];

+				var positionSize = position.itemSize;

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, position.buffer );

+				enableAttribute( attributes.position );

+				_gl.vertexAttribPointer( attributes.position, positionSize, _gl.FLOAT, false, 0, 0 );

+

+				// colors

+

+				var color = geometry.attributes[ "color" ];

+

+				if ( attributes.color >= 0 && color ) {

+

+					var colorSize = color.itemSize;

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, color.buffer );

+					enableAttribute( attributes.color );

+					_gl.vertexAttribPointer( attributes.color, colorSize, _gl.FLOAT, false, 0, 0 );

+

+				}

+

+				// render lines

+

+				setLineWidth( material.linewidth );

+

+				_gl.drawArrays( _gl.LINE_STRIP, 0, position.numItems / 3 );

+

+				_this.info.render.calls ++;

+				_this.info.render.points += position.numItems;

+

+			}

+

+    }

+

+	};

+

+	this.renderBuffer = function ( camera, lights, fog, material, geometryGroup, object ) {

+

+		if ( material.visible === false ) return;

+

+		var program, attributes, linewidth, primitives, a, attribute, i, il;

+

+		program = setProgram( camera, lights, fog, material, object );

+

+		attributes = program.attributes;

+

+		var updateBuffers = false,

+			wireframeBit = material.wireframe ? 1 : 0,

+			geometryGroupHash = ( geometryGroup.id * 0xffffff ) + ( program.id * 2 ) + wireframeBit;

+

+		if ( geometryGroupHash !== _currentGeometryGroupHash ) {

+

+			_currentGeometryGroupHash = geometryGroupHash;

+			updateBuffers = true;

+

+		}

+

+		if ( updateBuffers ) {

+

+			disableAttributes();

+

+		}

+

+		// vertices

+

+		if ( !material.morphTargets && attributes.position >= 0 ) {

+

+			if ( updateBuffers ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglVertexBuffer );

+				enableAttribute( attributes.position );

+				_gl.vertexAttribPointer( attributes.position, 3, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+		} else {

+

+			if ( object.morphTargetBase ) {

+

+				setupMorphTargets( material, geometryGroup, object );

+

+			}

+

+		}

+

+

+		if ( updateBuffers ) {

+

+			// custom attributes

+

+			// Use the per-geometryGroup custom attribute arrays which are setup in initMeshBuffers

+

+			if ( geometryGroup.__webglCustomAttributesList ) {

+

+				for ( i = 0, il = geometryGroup.__webglCustomAttributesList.length; i < il; i ++ ) {

+

+					attribute = geometryGroup.__webglCustomAttributesList[ i ];

+

+					if ( attributes[ attribute.buffer.belongsToAttribute ] >= 0 ) {

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, attribute.buffer );

+						enableAttribute( attributes[ attribute.buffer.belongsToAttribute ] );

+						_gl.vertexAttribPointer( attributes[ attribute.buffer.belongsToAttribute ], attribute.size, _gl.FLOAT, false, 0, 0 );

+

+					}

+

+				}

+

+			}

+

+

+			// colors

+

+			if ( attributes.color >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglColorBuffer );

+				enableAttribute( attributes.color );

+				_gl.vertexAttribPointer( attributes.color, 3, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+			// normals

+

+			if ( attributes.normal >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglNormalBuffer );

+				enableAttribute( attributes.normal );

+				_gl.vertexAttribPointer( attributes.normal, 3, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+			// tangents

+

+			if ( attributes.tangent >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglTangentBuffer );

+				enableAttribute( attributes.tangent );

+				_gl.vertexAttribPointer( attributes.tangent, 4, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+			// uvs

+

+			if ( attributes.uv >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglUVBuffer );

+				enableAttribute( attributes.uv );

+				_gl.vertexAttribPointer( attributes.uv, 2, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+			if ( attributes.uv2 >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglUV2Buffer );

+				enableAttribute( attributes.uv2 );

+				_gl.vertexAttribPointer( attributes.uv2, 2, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+			if ( material.skinning &&

+				 attributes.skinIndex >= 0 && attributes.skinWeight >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglSkinIndicesBuffer );

+				enableAttribute( attributes.skinIndex );

+				_gl.vertexAttribPointer( attributes.skinIndex, 4, _gl.FLOAT, false, 0, 0 );

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglSkinWeightsBuffer );

+				enableAttribute( attributes.skinWeight );

+				_gl.vertexAttribPointer( attributes.skinWeight, 4, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+			// line distances

+

+			if ( attributes.lineDistance >= 0 ) {

+

+				_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglLineDistanceBuffer );

+				enableAttribute( attributes.lineDistance );

+				_gl.vertexAttribPointer( attributes.lineDistance, 1, _gl.FLOAT, false, 0, 0 );

+

+			}

+

+		}

+

+		// render mesh

+

+		if ( object instanceof THREE.Mesh ) {

+

+			// wireframe

+

+			if ( material.wireframe ) {

+

+				setLineWidth( material.wireframeLinewidth );

+

+				if ( updateBuffers ) _gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, geometryGroup.__webglLineBuffer );

+				_gl.drawElements( _gl.LINES, geometryGroup.__webglLineCount, _gl.UNSIGNED_SHORT, 0 );

+

+			// triangles

+

+			} else {

+

+				if ( updateBuffers ) _gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, geometryGroup.__webglFaceBuffer );

+				_gl.drawElements( _gl.TRIANGLES, geometryGroup.__webglFaceCount, _gl.UNSIGNED_SHORT, 0 );

+

+			}

+

+			_this.info.render.calls ++;

+			_this.info.render.vertices += geometryGroup.__webglFaceCount;

+			_this.info.render.faces += geometryGroup.__webglFaceCount / 3;

+

+		// render lines

+

+		} else if ( object instanceof THREE.Line ) {

+

+			primitives = ( object.type === THREE.LineStrip ) ? _gl.LINE_STRIP : _gl.LINES;

+

+			setLineWidth( material.linewidth );

+

+			_gl.drawArrays( primitives, 0, geometryGroup.__webglLineCount );

+

+			_this.info.render.calls ++;

+

+		// render particles

+

+		} else if ( object instanceof THREE.ParticleSystem ) {

+

+			_gl.drawArrays( _gl.POINTS, 0, geometryGroup.__webglParticleCount );

+

+			_this.info.render.calls ++;

+			_this.info.render.points += geometryGroup.__webglParticleCount;

+

+		// render ribbon

+

+		} else if ( object instanceof THREE.Ribbon ) {

+

+			_gl.drawArrays( _gl.TRIANGLE_STRIP, 0, geometryGroup.__webglVertexCount );

+

+			_this.info.render.calls ++;

+

+		}

+

+	};

+

+	function enableAttribute( attribute ) {

+

+		if ( ! _enabledAttributes[ attribute ] ) {

+

+			_gl.enableVertexAttribArray( attribute );

+			_enabledAttributes[ attribute ] = true;

+

+		}

+

+	};

+

+	function disableAttributes() {

+

+		for ( var attribute in _enabledAttributes ) {

+

+			if ( _enabledAttributes[ attribute ] ) {

+

+				_gl.disableVertexAttribArray( attribute );

+				_enabledAttributes[ attribute ] = false;

+

+			}

+

+		}

+

+	};

+

+	function setupMorphTargets ( material, geometryGroup, object ) {

+

+		// set base

+

+		var attributes = material.program.attributes;

+

+		if ( object.morphTargetBase !== -1 && attributes.position >= 0 ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphTargetsBuffers[ object.morphTargetBase ] );

+			enableAttribute( attributes.position );

+			_gl.vertexAttribPointer( attributes.position, 3, _gl.FLOAT, false, 0, 0 );

+

+		} else if ( attributes.position >= 0 ) {

+

+			_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglVertexBuffer );

+			enableAttribute( attributes.position );

+			_gl.vertexAttribPointer( attributes.position, 3, _gl.FLOAT, false, 0, 0 );

+

+		}

+

+		if ( object.morphTargetForcedOrder.length ) {

+

+			// set forced order

+

+			var m = 0;

+			var order = object.morphTargetForcedOrder;

+			var influences = object.morphTargetInfluences;

+

+			while ( m < material.numSupportedMorphTargets && m < order.length ) {

+

+				if ( attributes[ "morphTarget" + m ] >= 0 ) {

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphTargetsBuffers[ order[ m ] ] );

+					enableAttribute( attributes[ "morphTarget" + m ] );

+					_gl.vertexAttribPointer( attributes[ "morphTarget" + m ], 3, _gl.FLOAT, false, 0, 0 );

+

+				}

+

+				if ( attributes[ "morphNormal" + m ] >= 0 && material.morphNormals ) {

+

+					_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphNormalsBuffers[ order[ m ] ] );

+					enableAttribute( attributes[ "morphNormal" + m ] );

+					_gl.vertexAttribPointer( attributes[ "morphNormal" + m ], 3, _gl.FLOAT, false, 0, 0 );

+

+				}

+

+				object.__webglMorphTargetInfluences[ m ] = influences[ order[ m ] ];

+

+				m ++;

+			}

+

+		} else {

+

+			// find the most influencing

+

+			var influence, activeInfluenceIndices = [];

+			var influences = object.morphTargetInfluences;

+			var i, il = influences.length;

+

+			for ( i = 0; i < il; i ++ ) {

+

+				influence = influences[ i ];

+

+				if ( influence > 0 ) {

+

+					activeInfluenceIndices.push( [ influence, i ] );

+

+				}

+

+			}

+

+			if ( activeInfluenceIndices.length > material.numSupportedMorphTargets ) {

+

+				activeInfluenceIndices.sort( numericalSort );

+				activeInfluenceIndices.length = material.numSupportedMorphTargets;

+

+			} else if ( activeInfluenceIndices.length > material.numSupportedMorphNormals ) {

+

+				activeInfluenceIndices.sort( numericalSort );

+

+			} else if ( activeInfluenceIndices.length === 0 ) {

+

+				activeInfluenceIndices.push( [ 0, 0 ] );

+

+			};

+

+			var influenceIndex, m = 0;

+

+			while ( m < material.numSupportedMorphTargets ) {

+

+				if ( activeInfluenceIndices[ m ] ) {

+

+					influenceIndex = activeInfluenceIndices[ m ][ 1 ];

+

+					if ( attributes[ "morphTarget" + m ] >= 0 ) {

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphTargetsBuffers[ influenceIndex ] );

+						enableAttribute( attributes[ "morphTarget" + m ] );

+						_gl.vertexAttribPointer( attributes[ "morphTarget" + m ], 3, _gl.FLOAT, false, 0, 0 );

+

+					}

+

+					if ( attributes[ "morphNormal" + m ] >= 0 && material.morphNormals ) {

+

+						_gl.bindBuffer( _gl.ARRAY_BUFFER, geometryGroup.__webglMorphNormalsBuffers[ influenceIndex ] );

+						enableAttribute( attributes[ "morphNormal" + m ] );

+						_gl.vertexAttribPointer( attributes[ "morphNormal" + m ], 3, _gl.FLOAT, false, 0, 0 );

+

+

+					}

+

+					object.__webglMorphTargetInfluences[ m ] = influences[ influenceIndex ];

+

+				} else {

+

+					/*

+					_gl.vertexAttribPointer( attributes[ "morphTarget" + m ], 3, _gl.FLOAT, false, 0, 0 );

+

+					if ( material.morphNormals ) {

+

+						_gl.vertexAttribPointer( attributes[ "morphNormal" + m ], 3, _gl.FLOAT, false, 0, 0 );

+

+					}

+					*/

+

+					object.__webglMorphTargetInfluences[ m ] = 0;

+

+				}

+

+				m ++;

+

+			}

+

+		}

+

+		// load updated influences uniform

+

+		if ( material.program.uniforms.morphTargetInfluences !== null ) {

+

+			_gl.uniform1fv( material.program.uniforms.morphTargetInfluences, object.__webglMorphTargetInfluences );

+

+		}

+

+	};

+

+	// Sorting

+

+	function painterSortStable ( a, b ) {

+

+		if ( a.z !== b.z ) {

+

+			return b.z - a.z;

+

+		} else {

+

+			return b.id - a.id;

+

+		}

+

+	};

+

+	function numericalSort ( a, b ) {

+

+		return b[ 0 ] - a[ 0 ];

+

+	};

+

+

+	// Rendering

+

+	this.render = function ( scene, camera, renderTarget, forceClear ) {

+

+		if ( camera instanceof THREE.Camera === false ) {

+

+			console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );

+			return;

+

+		}

+

+		var i, il,

+

+		webglObject, object,

+		renderList,

+

+		lights = scene.__lights,

+		fog = scene.fog;

+

+		// reset caching for this frame

+

+		_currentMaterialId = -1;

+		_lightsNeedUpdate = true;

+

+		// update scene graph

+

+		if ( this.autoUpdateScene ) scene.updateMatrixWorld();

+

+		// update camera matrices and frustum

+

+		if ( camera.parent === undefined ) camera.updateMatrixWorld();

+

+		camera.matrixWorldInverse.getInverse( camera.matrixWorld );

+

+		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );

+		_frustum.setFromMatrix( _projScreenMatrix );

+

+		// update WebGL objects

+

+		if ( this.autoUpdateObjects ) this.initWebGLObjects( scene );

+

+		// custom render plugins (pre pass)

+

+		renderPlugins( this.renderPluginsPre, scene, camera );

+

+		//

+

+		_this.info.render.calls = 0;

+		_this.info.render.vertices = 0;

+		_this.info.render.faces = 0;

+		_this.info.render.points = 0;

+

+		this.setRenderTarget( renderTarget );

+

+		if ( this.autoClear || forceClear ) {

+

+			this.clear( this.autoClearColor, this.autoClearDepth, this.autoClearStencil );

+

+		}

+

+		// set matrices for regular objects (frustum culled)

+

+		renderList = scene.__webglObjects;

+

+		for ( i = 0, il = renderList.length; i < il; i ++ ) {

+

+			webglObject = renderList[ i ];

+			object = webglObject.object;

+

+			webglObject.render = false;

+

+			if ( object.visible ) {

+

+				if ( ! ( object instanceof THREE.Mesh || object instanceof THREE.ParticleSystem ) || ! ( object.frustumCulled ) || _frustum.intersectsObject( object ) ) {

+

+					setupMatrices( object, camera );

+

+					unrollBufferMaterial( webglObject );

+

+					webglObject.render = true;

+

+					if ( this.sortObjects === true ) {

+

+						if ( object.renderDepth !== null ) {

+

+							webglObject.z = object.renderDepth;

+

+						} else {

+

+							_vector3.getPositionFromMatrix( object.matrixWorld );

+							_vector3.applyProjection( _projScreenMatrix );

+

+							webglObject.z = _vector3.z;

+

+						}

+

+						webglObject.id = object.id;

+

+					}

+

+				}

+

+			}

+

+		}

+

+		if ( this.sortObjects ) {

+

+			renderList.sort( painterSortStable );

+

+		}

+

+		// set matrices for immediate objects

+

+		renderList = scene.__webglObjectsImmediate;

+

+		for ( i = 0, il = renderList.length; i < il; i ++ ) {

+

+			webglObject = renderList[ i ];

+			object = webglObject.object;

+

+			if ( object.visible ) {

+

+				setupMatrices( object, camera );

+

+				unrollImmediateBufferMaterial( webglObject );

+

+			}

+

+		}

+

+		if ( scene.overrideMaterial ) {

+

+			var material = scene.overrideMaterial;

+

+			this.setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst );

+			this.setDepthTest( material.depthTest );

+			this.setDepthWrite( material.depthWrite );

+			setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );

+

+			renderObjects( scene.__webglObjects, false, "", camera, lights, fog, true, material );

+			renderObjectsImmediate( scene.__webglObjectsImmediate, "", camera, lights, fog, false, material );

+

+		} else {

+

+			var material = null;

+

+			// opaque pass (front-to-back order)

+

+			this.setBlending( THREE.NoBlending );

+

+			renderObjects( scene.__webglObjects, true, "opaque", camera, lights, fog, false, material );

+			renderObjectsImmediate( scene.__webglObjectsImmediate, "opaque", camera, lights, fog, false, material );

+

+			// transparent pass (back-to-front order)

+

+			renderObjects( scene.__webglObjects, false, "transparent", camera, lights, fog, true, material );

+			renderObjectsImmediate( scene.__webglObjectsImmediate, "transparent", camera, lights, fog, true, material );

+

+		}

+

+		// custom render plugins (post pass)

+

+		renderPlugins( this.renderPluginsPost, scene, camera );

+

+

+		// Generate mipmap if we're using any kind of mipmap filtering

+

+		if ( renderTarget && renderTarget.generateMipmaps && renderTarget.minFilter !== THREE.NearestFilter && renderTarget.minFilter !== THREE.LinearFilter ) {

+

+			updateRenderTargetMipmap( renderTarget );

+

+		}

+

+		// Ensure depth buffer writing is enabled so it can be cleared on next render

+

+		this.setDepthTest( true );

+		this.setDepthWrite( true );

+

+		// _gl.finish();

+

+	};

+

+	function renderPlugins( plugins, scene, camera ) {

+

+		if ( ! plugins.length ) return;

+

+		for ( var i = 0, il = plugins.length; i < il; i ++ ) {

+

+			// reset state for plugin (to start from clean slate)

+

+			_currentProgram = null;

+			_currentCamera = null;

+

+			_oldBlending = -1;

+			_oldDepthTest = -1;

+			_oldDepthWrite = -1;

+			_oldDoubleSided = -1;

+			_oldFlipSided = -1;

+			_currentGeometryGroupHash = -1;

+			_currentMaterialId = -1;

+

+			_lightsNeedUpdate = true;

+

+			plugins[ i ].render( scene, camera, _currentWidth, _currentHeight );

+

+			// reset state after plugin (anything could have changed)

+

+			_currentProgram = null;

+			_currentCamera = null;

+

+			_oldBlending = -1;

+			_oldDepthTest = -1;

+			_oldDepthWrite = -1;

+			_oldDoubleSided = -1;

+			_oldFlipSided = -1;

+			_currentGeometryGroupHash = -1;

+			_currentMaterialId = -1;

+

+			_lightsNeedUpdate = true;

+

+		}

+

+	};

+

+	function renderObjects ( renderList, reverse, materialType, camera, lights, fog, useBlending, overrideMaterial ) {

+

+		var webglObject, object, buffer, material, start, end, delta;

+

+		if ( reverse ) {

+

+			start = renderList.length - 1;

+			end = -1;

+			delta = -1;

+

+		} else {

+

+			start = 0;

+			end = renderList.length;

+			delta = 1;

+		}

+

+		for ( var i = start; i !== end; i += delta ) {

+

+			webglObject = renderList[ i ];

+

+			if ( webglObject.render ) {

+

+				object = webglObject.object;

+				buffer = webglObject.buffer;

+

+				if ( overrideMaterial ) {

+

+					material = overrideMaterial;

+

+				} else {

+

+					material = webglObject[ materialType ];

+

+					if ( ! material ) continue;

+

+					if ( useBlending ) _this.setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst );

+

+					_this.setDepthTest( material.depthTest );

+					_this.setDepthWrite( material.depthWrite );

+					setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );

+

+				}

+

+				_this.setMaterialFaces( material );

+

+				if ( buffer instanceof THREE.BufferGeometry ) {

+

+					_this.renderBufferDirect( camera, lights, fog, material, buffer, object );

+

+				} else {

+

+					_this.renderBuffer( camera, lights, fog, material, buffer, object );

+

+				}

+

+			}

+

+		}

+

+	};

+

+	function renderObjectsImmediate ( renderList, materialType, camera, lights, fog, useBlending, overrideMaterial ) {

+

+		var webglObject, object, material, program;

+

+		for ( var i = 0, il = renderList.length; i < il; i ++ ) {

+

+			webglObject = renderList[ i ];

+			object = webglObject.object;

+

+			if ( object.visible ) {

+

+				if ( overrideMaterial ) {

+

+					material = overrideMaterial;

+

+				} else {

+

+					material = webglObject[ materialType ];

+

+					if ( ! material ) continue;

+

+					if ( useBlending ) _this.setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst );

+

+					_this.setDepthTest( material.depthTest );

+					_this.setDepthWrite( material.depthWrite );

+					setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );

+

+				}

+

+				_this.renderImmediateObject( camera, lights, fog, material, object );

+

+			}

+

+		}

+

+	};

+

+	this.renderImmediateObject = function ( camera, lights, fog, material, object ) {

+

+		var program = setProgram( camera, lights, fog, material, object );

+

+		_currentGeometryGroupHash = -1;

+

+		_this.setMaterialFaces( material );

+

+		if ( object.immediateRenderCallback ) {

+

+			object.immediateRenderCallback( program, _gl, _frustum );

+

+		} else {

+

+			object.render( function( object ) { _this.renderBufferImmediate( object, program, material ); } );

+

+		}

+

+	};

+

+	function unrollImmediateBufferMaterial ( globject ) {

+

+		var object = globject.object,

+			material = object.material;

+

+		if ( material.transparent ) {

+

+			globject.transparent = material;

+			globject.opaque = null;

+

+		} else {

+

+			globject.opaque = material;

+			globject.transparent = null;

+

+		}

+

+	};

+

+	function unrollBufferMaterial ( globject ) {

+

+		var object = globject.object,

+			buffer = globject.buffer,

+			material, materialIndex, meshMaterial;

+

+		meshMaterial = object.material;

+

+		if ( meshMaterial instanceof THREE.MeshFaceMaterial ) {

+

+			materialIndex = buffer.materialIndex;

+

+			material = meshMaterial.materials[ materialIndex ];

+

+			if ( material.transparent ) {

+

+				globject.transparent = material;

+				globject.opaque = null;

+

+			} else {

+

+				globject.opaque = material;

+				globject.transparent = null;

+

+			}

+

+		} else {

+

+			material = meshMaterial;

+

+			if ( material ) {

+

+				if ( material.transparent ) {

+

+					globject.transparent = material;

+					globject.opaque = null;

+

+				} else {

+

+					globject.opaque = material;

+					globject.transparent = null;

+

+				}

+

+			}

+

+		}

+

+	};

+

+	// Geometry splitting

+

+	function sortFacesByMaterial ( geometry, material ) {

+

+		var f, fl, face, materialIndex, vertices,

+			groupHash, hash_map = {};

+

+		var numMorphTargets = geometry.morphTargets.length;

+		var numMorphNormals = geometry.morphNormals.length;

+

+		var usesFaceMaterial = material instanceof THREE.MeshFaceMaterial;

+

+		geometry.geometryGroups = {};

+

+		for ( f = 0, fl = geometry.faces.length; f < fl; f ++ ) {

+

+			face = geometry.faces[ f ];

+			materialIndex = usesFaceMaterial ? face.materialIndex : 0;

+

+			if ( hash_map[ materialIndex ] === undefined ) {

+

+				hash_map[ materialIndex ] = { 'hash': materialIndex, 'counter': 0 };

+

+			}

+

+			groupHash = hash_map[ materialIndex ].hash + '_' + hash_map[ materialIndex ].counter;

+

+			if ( geometry.geometryGroups[ groupHash ] === undefined ) {

+

+				geometry.geometryGroups[ groupHash ] = { 'faces3': [], 'faces4': [], 'materialIndex': materialIndex, 'vertices': 0, 'numMorphTargets': numMorphTargets, 'numMorphNormals': numMorphNormals };

+

+			}

+

+			vertices = face instanceof THREE.Face3 ? 3 : 4;

+

+			if ( geometry.geometryGroups[ groupHash ].vertices + vertices > 65535 ) {

+

+				hash_map[ materialIndex ].counter += 1;

+				groupHash = hash_map[ materialIndex ].hash + '_' + hash_map[ materialIndex ].counter;

+

+				if ( geometry.geometryGroups[ groupHash ] === undefined ) {

+

+					geometry.geometryGroups[ groupHash ] = { 'faces3': [], 'faces4': [], 'materialIndex': materialIndex, 'vertices': 0, 'numMorphTargets': numMorphTargets, 'numMorphNormals': numMorphNormals };

+

+				}

+

+			}

+

+			if ( face instanceof THREE.Face3 ) {

+

+				geometry.geometryGroups[ groupHash ].faces3.push( f );

+

+			} else {

+

+				geometry.geometryGroups[ groupHash ].faces4.push( f );

+

+			}

+

+			geometry.geometryGroups[ groupHash ].vertices += vertices;

+

+		}

+

+		geometry.geometryGroupsList = [];

+

+		for ( var g in geometry.geometryGroups ) {

+

+			geometry.geometryGroups[ g ].id = _geometryGroupCounter ++;

+

+			geometry.geometryGroupsList.push( geometry.geometryGroups[ g ] );

+

+		}

+

+	};

+

+	// Objects refresh

+

+	this.initWebGLObjects = function ( scene ) {

+

+		if ( !scene.__webglObjects ) {

+

+			scene.__webglObjects = [];

+			scene.__webglObjectsImmediate = [];

+			scene.__webglSprites = [];

+			scene.__webglFlares = [];

+

+		}

+

+		while ( scene.__objectsAdded.length ) {

+

+			addObject( scene.__objectsAdded[ 0 ], scene );

+			scene.__objectsAdded.splice( 0, 1 );

+

+		}

+

+		while ( scene.__objectsRemoved.length ) {

+

+			removeObject( scene.__objectsRemoved[ 0 ], scene );

+			scene.__objectsRemoved.splice( 0, 1 );

+

+		}

+

+		// update must be called after objects adding / removal

+

+		for ( var o = 0, ol = scene.__webglObjects.length; o < ol; o ++ ) {

+

+			updateObject( scene.__webglObjects[ o ].object );

+

+		}

+

+	};

+

+	// Objects adding

+

+	function addObject ( object, scene ) {

+

+		var g, geometry, material, geometryGroup;

+

+		if ( ! object.__webglInit ) {

+

+			object.__webglInit = true;

+

+			object._modelViewMatrix = new THREE.Matrix4();

+			object._normalMatrix = new THREE.Matrix3();

+

+			if ( object.geometry !== undefined && object.geometry.__webglInit === undefined ) {

+

+				object.geometry.__webglInit = true;

+				object.geometry.addEventListener( 'dispose', onGeometryDispose );

+

+			}

+

+			if ( object instanceof THREE.Mesh ) {

+

+				geometry = object.geometry;

+				material = object.material;

+

+				if ( geometry instanceof THREE.Geometry ) {

+

+					if ( geometry.geometryGroups === undefined ) {

+

+						sortFacesByMaterial( geometry, material );

+

+					}

+

+					// create separate VBOs per geometry chunk

+

+					for ( g in geometry.geometryGroups ) {

+

+						geometryGroup = geometry.geometryGroups[ g ];

+

+						// initialise VBO on the first access

+

+						if ( ! geometryGroup.__webglVertexBuffer ) {

+

+							createMeshBuffers( geometryGroup );

+							initMeshBuffers( geometryGroup, object );

+

+							geometry.verticesNeedUpdate = true;

+							geometry.morphTargetsNeedUpdate = true;

+							geometry.elementsNeedUpdate = true;

+							geometry.uvsNeedUpdate = true;

+							geometry.normalsNeedUpdate = true;

+							geometry.tangentsNeedUpdate = true;

+							geometry.colorsNeedUpdate = true;

+

+						}

+

+					}

+

+				} else if ( geometry instanceof THREE.BufferGeometry ) {

+

+					initDirectBuffers( geometry );

+

+				}

+

+			} else if ( object instanceof THREE.Ribbon ) {

+

+				geometry = object.geometry;

+

+				if ( ! geometry.__webglVertexBuffer ) {

+

+					createRibbonBuffers( geometry );

+					initRibbonBuffers( geometry, object );

+

+					geometry.verticesNeedUpdate = true;

+					geometry.colorsNeedUpdate = true;

+					geometry.normalsNeedUpdate = true;

+

+				}

+

+			} else if ( object instanceof THREE.Line ) {

+

+				geometry = object.geometry;

+

+				if ( ! geometry.__webglVertexBuffer ) {

+

+					if ( geometry instanceof THREE.Geometry ) {

+

+            createLineBuffers( geometry );

+            initLineBuffers( geometry, object );

+

+            geometry.verticesNeedUpdate = true;

+            geometry.colorsNeedUpdate = true;

+            geometry.lineDistancesNeedUpdate = true;

+

+          } else if ( geometry instanceof THREE.BufferGeometry ) {

+

+						initDirectBuffers( geometry );

+

+					}

+

+				}

+

+			} else if ( object instanceof THREE.ParticleSystem ) {

+

+				geometry = object.geometry;

+

+				if ( ! geometry.__webglVertexBuffer ) {

+

+					if ( geometry instanceof THREE.Geometry ) {

+

+						createParticleBuffers( geometry );

+						initParticleBuffers( geometry, object );

+

+						geometry.verticesNeedUpdate = true;

+						geometry.colorsNeedUpdate = true;

+

+					} else if ( geometry instanceof THREE.BufferGeometry ) {

+

+						initDirectBuffers( geometry );

+

+					}

+

+

+				}

+

+			}

+

+		}

+

+		if ( ! object.__webglActive ) {

+

+			if ( object instanceof THREE.Mesh ) {

+

+				geometry = object.geometry;

+

+				if ( geometry instanceof THREE.BufferGeometry ) {

+

+					addBuffer( scene.__webglObjects, geometry, object );

+

+				} else if ( geometry instanceof THREE.Geometry ) {

+

+					for ( g in geometry.geometryGroups ) {

+

+						geometryGroup = geometry.geometryGroups[ g ];

+

+						addBuffer( scene.__webglObjects, geometryGroup, object );

+

+					}

+

+				}

+

+			} else if ( object instanceof THREE.Ribbon ||

+						object instanceof THREE.Line ||

+						object instanceof THREE.ParticleSystem ) {

+

+				geometry = object.geometry;

+				addBuffer( scene.__webglObjects, geometry, object );

+

+			} else if ( object instanceof THREE.ImmediateRenderObject || object.immediateRenderCallback ) {

+

+				addBufferImmediate( scene.__webglObjectsImmediate, object );

+

+			} else if ( object instanceof THREE.Sprite ) {

+

+				scene.__webglSprites.push( object );

+

+			} else if ( object instanceof THREE.LensFlare ) {

+

+				scene.__webglFlares.push( object );

+

+			}

+

+			object.__webglActive = true;

+

+		}

+

+	};

+

+	function addBuffer ( objlist, buffer, object ) {

+

+		objlist.push(

+			{

+				buffer: buffer,

+				object: object,

+				opaque: null,

+				transparent: null

+			}

+		);

+

+	};

+

+	function addBufferImmediate ( objlist, object ) {

+

+		objlist.push(

+			{

+				object: object,

+				opaque: null,

+				transparent: null

+			}

+		);

+

+	};

+

+	// Objects updates

+

+	function updateObject ( object ) {

+

+		var geometry = object.geometry,

+			geometryGroup, customAttributesDirty, material;

+

+		if ( object instanceof THREE.Mesh ) {

+

+			if ( geometry instanceof THREE.BufferGeometry ) {

+

+				if ( geometry.verticesNeedUpdate || geometry.elementsNeedUpdate ||

+					 geometry.uvsNeedUpdate || geometry.normalsNeedUpdate ||

+					 geometry.colorsNeedUpdate || geometry.tangentsNeedUpdate ) {

+

+					setDirectBuffers( geometry, _gl.DYNAMIC_DRAW, !geometry.dynamic );

+

+				}

+

+				geometry.verticesNeedUpdate = false;

+				geometry.elementsNeedUpdate = false;

+				geometry.uvsNeedUpdate = false;

+				geometry.normalsNeedUpdate = false;

+				geometry.colorsNeedUpdate = false;

+				geometry.tangentsNeedUpdate = false;

+

+			} else {

+

+				// check all geometry groups

+

+				for( var i = 0, il = geometry.geometryGroupsList.length; i < il; i ++ ) {

+

+					geometryGroup = geometry.geometryGroupsList[ i ];

+

+					material = getBufferMaterial( object, geometryGroup );

+

+					if ( geometry.buffersNeedUpdate ) {

+

+						initMeshBuffers( geometryGroup, object );

+

+					}

+

+					customAttributesDirty = material.attributes && areCustomAttributesDirty( material );

+

+					if ( geometry.verticesNeedUpdate || geometry.morphTargetsNeedUpdate || geometry.elementsNeedUpdate ||

+						 geometry.uvsNeedUpdate || geometry.normalsNeedUpdate ||

+						 geometry.colorsNeedUpdate || geometry.tangentsNeedUpdate || customAttributesDirty ) {

+

+						setMeshBuffers( geometryGroup, object, _gl.DYNAMIC_DRAW, !geometry.dynamic, material );

+

+					}

+

+				}

+

+				geometry.verticesNeedUpdate = false;

+				geometry.morphTargetsNeedUpdate = false;

+				geometry.elementsNeedUpdate = false;

+				geometry.uvsNeedUpdate = false;

+				geometry.normalsNeedUpdate = false;

+				geometry.colorsNeedUpdate = false;

+				geometry.tangentsNeedUpdate = false;

+

+				geometry.buffersNeedUpdate = false;

+

+				material.attributes && clearCustomAttributes( material );

+

+			}

+

+		} else if ( object instanceof THREE.Ribbon ) {

+

+			material = getBufferMaterial( object, geometry );

+

+			customAttributesDirty = material.attributes && areCustomAttributesDirty( material );

+

+			if ( geometry.verticesNeedUpdate || geometry.colorsNeedUpdate || geometry.normalsNeedUpdate || customAttributesDirty ) {

+

+				setRibbonBuffers( geometry, _gl.DYNAMIC_DRAW );

+

+			}

+

+			geometry.verticesNeedUpdate = false;

+			geometry.colorsNeedUpdate = false;

+			geometry.normalsNeedUpdate = false;

+

+			material.attributes && clearCustomAttributes( material );

+

+		} else if ( object instanceof THREE.Line ) {

+

+      if ( geometry instanceof THREE.BufferGeometry ) {

+

+				if ( geometry.verticesNeedUpdate || geometry.colorsNeedUpdate ) {

+

+					setDirectBuffers( geometry, _gl.DYNAMIC_DRAW, !geometry.dynamic );

+

+				}

+

+				geometry.verticesNeedUpdate = false;

+				geometry.colorsNeedUpdate = false;

+

+			} else {

+

+        material = getBufferMaterial( object, geometry );

+

+        customAttributesDirty = material.attributes && areCustomAttributesDirty( material );

+

+        if ( geometry.verticesNeedUpdate || geometry.colorsNeedUpdate || geometry.lineDistancesNeedUpdate || customAttributesDirty ) {

+

+          setLineBuffers( geometry, _gl.DYNAMIC_DRAW );

+

+        }

+

+        geometry.verticesNeedUpdate = false;

+        geometry.colorsNeedUpdate = false;

+        geometry.lineDistancesNeedUpdate = false;

+

+        material.attributes && clearCustomAttributes( material );

+

+      }

+

+		} else if ( object instanceof THREE.ParticleSystem ) {

+

+			if ( geometry instanceof THREE.BufferGeometry ) {

+

+				if ( geometry.verticesNeedUpdate || geometry.colorsNeedUpdate ) {

+

+					setDirectBuffers( geometry, _gl.DYNAMIC_DRAW, !geometry.dynamic );

+

+				}

+

+				geometry.verticesNeedUpdate = false;

+				geometry.colorsNeedUpdate = false;

+

+			} else {

+

+				material = getBufferMaterial( object, geometry );

+

+				customAttributesDirty = material.attributes && areCustomAttributesDirty( material );

+

+				if ( geometry.verticesNeedUpdate || geometry.colorsNeedUpdate || object.sortParticles || customAttributesDirty ) {

+

+					setParticleBuffers( geometry, _gl.DYNAMIC_DRAW, object );

+

+				}

+

+				geometry.verticesNeedUpdate = false;

+				geometry.colorsNeedUpdate = false;

+

+				material.attributes && clearCustomAttributes( material );

+

+			}

+

+		}

+

+	};

+

+	// Objects updates - custom attributes check

+

+	function areCustomAttributesDirty ( material ) {

+

+		for ( var a in material.attributes ) {

+

+			if ( material.attributes[ a ].needsUpdate ) return true;

+

+		}

+

+		return false;

+

+	};

+

+	function clearCustomAttributes ( material ) {

+

+		for ( var a in material.attributes ) {

+

+			material.attributes[ a ].needsUpdate = false;

+

+		}

+

+	};

+

+	// Objects removal

+

+	function removeObject ( object, scene ) {

+

+		if ( object instanceof THREE.Mesh  ||

+			 object instanceof THREE.ParticleSystem ||

+			 object instanceof THREE.Ribbon ||

+			 object instanceof THREE.Line ) {

+

+			removeInstances( scene.__webglObjects, object );

+

+		} else if ( object instanceof THREE.Sprite ) {

+

+			removeInstancesDirect( scene.__webglSprites, object );

+

+		} else if ( object instanceof THREE.LensFlare ) {

+

+			removeInstancesDirect( scene.__webglFlares, object );

+

+		} else if ( object instanceof THREE.ImmediateRenderObject || object.immediateRenderCallback ) {

+

+			removeInstances( scene.__webglObjectsImmediate, object );

+

+		}

+

+		object.__webglActive = false;

+

+	};

+

+	function removeInstances ( objlist, object ) {

+

+		for ( var o = objlist.length - 1; o >= 0; o -- ) {

+

+			if ( objlist[ o ].object === object ) {

+

+				objlist.splice( o, 1 );

+

+			}

+

+		}

+

+	};

+

+	function removeInstancesDirect ( objlist, object ) {

+

+		for ( var o = objlist.length - 1; o >= 0; o -- ) {

+

+			if ( objlist[ o ] === object ) {

+

+				objlist.splice( o, 1 );

+

+			}

+

+		}

+

+	};

+

+	// Materials

+

+	this.initMaterial = function ( material, lights, fog, object ) {

+

+		material.addEventListener( 'dispose', onMaterialDispose );

+

+		var u, a, identifiers, i, parameters, maxLightCount, maxBones, maxShadows, shaderID;

+

+		if ( material instanceof THREE.MeshDepthMaterial ) {

+

+			shaderID = 'depth';

+

+		} else if ( material instanceof THREE.MeshNormalMaterial ) {

+

+			shaderID = 'normal';

+

+		} else if ( material instanceof THREE.MeshBasicMaterial ) {

+

+			shaderID = 'basic';

+

+		} else if ( material instanceof THREE.MeshLambertMaterial ) {

+

+			shaderID = 'lambert';

+

+		} else if ( material instanceof THREE.MeshPhongMaterial ) {

+

+			shaderID = 'phong';

+

+		} else if ( material instanceof THREE.LineBasicMaterial ) {

+

+			shaderID = 'basic';

+

+		} else if ( material instanceof THREE.LineDashedMaterial ) {

+

+			shaderID = 'dashed';

+

+		} else if ( material instanceof THREE.ParticleBasicMaterial ) {

+

+			shaderID = 'particle_basic';

+

+		}

+

+		if ( shaderID ) {

+

+			setMaterialShaders( material, THREE.ShaderLib[ shaderID ] );

+

+		}

+

+		// heuristics to create shader parameters according to lights in the scene

+		// (not to blow over maxLights budget)

+

+		maxLightCount = allocateLights( lights );

+

+		maxShadows = allocateShadows( lights );

+

+		maxBones = allocateBones( object );

+

+		parameters = {

+

+			map: !!material.map,

+			envMap: !!material.envMap,

+			lightMap: !!material.lightMap,

+			bumpMap: !!material.bumpMap,

+			normalMap: !!material.normalMap,

+			specularMap: !!material.specularMap,

+

+			vertexColors: material.vertexColors,

+

+			fog: fog,

+			useFog: material.fog,

+			fogExp: fog instanceof THREE.FogExp2,

+

+			sizeAttenuation: material.sizeAttenuation,

+

+			skinning: material.skinning,

+			maxBones: maxBones,

+			useVertexTexture: _supportsBoneTextures && object && object.useVertexTexture,

+			boneTextureWidth: object && object.boneTextureWidth,

+			boneTextureHeight: object && object.boneTextureHeight,

+

+			morphTargets: material.morphTargets,

+			morphNormals: material.morphNormals,

+			maxMorphTargets: this.maxMorphTargets,

+			maxMorphNormals: this.maxMorphNormals,

+

+			maxDirLights: maxLightCount.directional,

+			maxPointLights: maxLightCount.point,

+			maxSpotLights: maxLightCount.spot,

+			maxHemiLights: maxLightCount.hemi,

+

+			maxShadows: maxShadows,

+			shadowMapEnabled: this.shadowMapEnabled && object.receiveShadow,

+			shadowMapType: this.shadowMapType,

+			shadowMapDebug: this.shadowMapDebug,

+			shadowMapCascade: this.shadowMapCascade,

+

+			alphaTest: material.alphaTest,

+			metal: material.metal,

+			perPixel: material.perPixel,

+			wrapAround: material.wrapAround,

+			doubleSided: material.side === THREE.DoubleSide,

+			flipSided: material.side === THREE.BackSide

+

+		};

+

+		material.program = buildProgram( shaderID, material.fragmentShader, material.vertexShader, material.uniforms, material.attributes, material.defines, parameters );

+

+		var attributes = material.program.attributes;

+

+		if ( material.morphTargets ) {

+

+			material.numSupportedMorphTargets = 0;

+

+			var id, base = "morphTarget";

+

+			for ( i = 0; i < this.maxMorphTargets; i ++ ) {

+

+				id = base + i;

+

+				if ( attributes[ id ] >= 0 ) {

+

+					material.numSupportedMorphTargets ++;

+

+				}

+

+			}

+

+		}

+

+		if ( material.morphNormals ) {

+

+			material.numSupportedMorphNormals = 0;

+

+			var id, base = "morphNormal";

+

+			for ( i = 0; i < this.maxMorphNormals; i ++ ) {

+

+				id = base + i;

+

+				if ( attributes[ id ] >= 0 ) {

+

+					material.numSupportedMorphNormals ++;

+

+				}

+

+			}

+

+		}

+

+		material.uniformsList = [];

+

+		for ( u in material.uniforms ) {

+

+			material.uniformsList.push( [ material.uniforms[ u ], u ] );

+

+		}

+

+	};

+

+	function setMaterialShaders( material, shaders ) {

+

+		material.uniforms = THREE.UniformsUtils.clone( shaders.uniforms );

+		material.vertexShader = shaders.vertexShader;

+		material.fragmentShader = shaders.fragmentShader;

+

+	};

+

+	function setProgram( camera, lights, fog, material, object ) {

+

+		_usedTextureUnits = 0;

+

+		if ( material.needsUpdate ) {

+

+			if ( material.program ) deallocateMaterial( material );

+

+			_this.initMaterial( material, lights, fog, object );

+			material.needsUpdate = false;

+

+		}

+

+		if ( material.morphTargets ) {

+

+			if ( ! object.__webglMorphTargetInfluences ) {

+

+				object.__webglMorphTargetInfluences = new Float32Array( _this.maxMorphTargets );

+

+			}

+

+		}

+

+		var refreshMaterial = false;

+

+		var program = material.program,

+			p_uniforms = program.uniforms,

+			m_uniforms = material.uniforms;

+

+		if ( program !== _currentProgram ) {

+

+			_gl.useProgram( program );

+			_currentProgram = program;

+

+			refreshMaterial = true;

+

+		}

+

+		if ( material.id !== _currentMaterialId ) {

+

+			_currentMaterialId = material.id;

+			refreshMaterial = true;

+

+		}

+

+		if ( refreshMaterial || camera !== _currentCamera ) {

+

+			_gl.uniformMatrix4fv( p_uniforms.projectionMatrix, false, camera.projectionMatrix.elements );

+

+			if ( camera !== _currentCamera ) _currentCamera = camera;

+

+		}

+

+		// skinning uniforms must be set even if material didn't change

+		// auto-setting of texture unit for bone texture must go before other textures

+		// not sure why, but otherwise weird things happen

+

+		if ( material.skinning ) {

+

+			if ( _supportsBoneTextures && object.useVertexTexture ) {

+

+				if ( p_uniforms.boneTexture !== null ) {

+

+					var textureUnit = getTextureUnit();

+

+					_gl.uniform1i( p_uniforms.boneTexture, textureUnit );

+					_this.setTexture( object.boneTexture, textureUnit );

+

+				}

+

+			} else {

+

+				if ( p_uniforms.boneGlobalMatrices !== null ) {

+

+					_gl.uniformMatrix4fv( p_uniforms.boneGlobalMatrices, false, object.boneMatrices );

+

+				}

+

+			}

+

+		}

+

+		if ( refreshMaterial ) {

+

+			// refresh uniforms common to several materials

+

+			if ( fog && material.fog ) {

+

+				refreshUniformsFog( m_uniforms, fog );

+

+			}

+

+			if ( material instanceof THREE.MeshPhongMaterial ||

+				 material instanceof THREE.MeshLambertMaterial ||

+				 material.lights ) {

+

+				if ( _lightsNeedUpdate ) {

+

+					setupLights( program, lights );

+					_lightsNeedUpdate = false;

+

+				}

+

+				refreshUniformsLights( m_uniforms, _lights );

+

+			}

+

+			if ( material instanceof THREE.MeshBasicMaterial ||

+				 material instanceof THREE.MeshLambertMaterial ||

+				 material instanceof THREE.MeshPhongMaterial ) {

+

+				refreshUniformsCommon( m_uniforms, material );

+

+			}

+

+			// refresh single material specific uniforms

+

+			if ( material instanceof THREE.LineBasicMaterial ) {

+

+				refreshUniformsLine( m_uniforms, material );

+

+			} else if ( material instanceof THREE.LineDashedMaterial ) {

+

+				refreshUniformsLine( m_uniforms, material );

+				refreshUniformsDash( m_uniforms, material );

+

+			} else if ( material instanceof THREE.ParticleBasicMaterial ) {

+

+				refreshUniformsParticle( m_uniforms, material );

+

+			} else if ( material instanceof THREE.MeshPhongMaterial ) {

+

+				refreshUniformsPhong( m_uniforms, material );

+

+			} else if ( material instanceof THREE.MeshLambertMaterial ) {

+

+				refreshUniformsLambert( m_uniforms, material );

+

+			} else if ( material instanceof THREE.MeshDepthMaterial ) {

+

+				m_uniforms.mNear.value = camera.near;

+				m_uniforms.mFar.value = camera.far;

+				m_uniforms.opacity.value = material.opacity;

+

+			} else if ( material instanceof THREE.MeshNormalMaterial ) {

+

+				m_uniforms.opacity.value = material.opacity;

+

+			}

+

+			if ( object.receiveShadow && ! material._shadowPass ) {

+

+				refreshUniformsShadow( m_uniforms, lights );

+

+			}

+

+			// load common uniforms

+

+			loadUniformsGeneric( program, material.uniformsList );

+

+			// load material specific uniforms

+			// (shader material also gets them for the sake of genericity)

+

+			if ( material instanceof THREE.ShaderMaterial ||

+				 material instanceof THREE.MeshPhongMaterial ||

+				 material.envMap ) {

+

+				if ( p_uniforms.cameraPosition !== null ) {

+

+					_vector3.getPositionFromMatrix( camera.matrixWorld );

+					_gl.uniform3f( p_uniforms.cameraPosition, _vector3.x, _vector3.y, _vector3.z );

+

+				}

+

+			}

+

+			if ( material instanceof THREE.MeshPhongMaterial ||

+				 material instanceof THREE.MeshLambertMaterial ||

+				 material instanceof THREE.ShaderMaterial ||

+				 material.skinning ) {

+

+				if ( p_uniforms.viewMatrix !== null ) {

+

+					_gl.uniformMatrix4fv( p_uniforms.viewMatrix, false, camera.matrixWorldInverse.elements );

+

+				}

+

+			}

+

+		}

+

+		loadUniformsMatrices( p_uniforms, object );

+

+		if ( p_uniforms.modelMatrix !== null ) {

+

+			_gl.uniformMatrix4fv( p_uniforms.modelMatrix, false, object.matrixWorld.elements );

+

+		}

+

+		return program;

+

+	};

+

+	// Uniforms (refresh uniforms objects)

+

+	function refreshUniformsCommon ( uniforms, material ) {

+

+		uniforms.opacity.value = material.opacity;

+

+		if ( _this.gammaInput ) {

+

+			uniforms.diffuse.value.copyGammaToLinear( material.color );

+

+		} else {

+

+			uniforms.diffuse.value = material.color;

+

+		}

+

+		uniforms.map.value = material.map;

+		uniforms.lightMap.value = material.lightMap;

+		uniforms.specularMap.value = material.specularMap;

+

+		if ( material.bumpMap ) {

+

+			uniforms.bumpMap.value = material.bumpMap;

+			uniforms.bumpScale.value = material.bumpScale;

+

+		}

+

+		if ( material.normalMap ) {

+

+			uniforms.normalMap.value = material.normalMap;

+			uniforms.normalScale.value.copy( material.normalScale );

+

+		}

+

+		// uv repeat and offset setting priorities

+		//	1. color map

+		//	2. specular map

+		//	3. normal map

+		//	4. bump map

+

+		var uvScaleMap;

+

+		if ( material.map ) {

+

+			uvScaleMap = material.map;

+

+		} else if ( material.specularMap ) {

+

+			uvScaleMap = material.specularMap;

+

+		} else if ( material.normalMap ) {

+

+			uvScaleMap = material.normalMap;

+

+		} else if ( material.bumpMap ) {

+

+			uvScaleMap = material.bumpMap;

+

+		}

+

+		if ( uvScaleMap !== undefined ) {

+

+			var offset = uvScaleMap.offset;

+			var repeat = uvScaleMap.repeat;

+

+			uniforms.offsetRepeat.value.set( offset.x, offset.y, repeat.x, repeat.y );

+

+		}

+

+		uniforms.envMap.value = material.envMap;

+		uniforms.flipEnvMap.value = ( material.envMap instanceof THREE.WebGLRenderTargetCube ) ? 1 : -1;

+

+		if ( _this.gammaInput ) {

+

+			//uniforms.reflectivity.value = material.reflectivity * material.reflectivity;

+			uniforms.reflectivity.value = material.reflectivity;

+

+		} else {

+

+			uniforms.reflectivity.value = material.reflectivity;

+

+		}

+

+		uniforms.refractionRatio.value = material.refractionRatio;

+		uniforms.combine.value = material.combine;

+		uniforms.useRefract.value = material.envMap && material.envMap.mapping instanceof THREE.CubeRefractionMapping;

+

+	};

+

+	function refreshUniformsLine ( uniforms, material ) {

+

+		uniforms.diffuse.value = material.color;

+		uniforms.opacity.value = material.opacity;

+

+	};

+

+	function refreshUniformsDash ( uniforms, material ) {

+

+		uniforms.dashSize.value = material.dashSize;

+		uniforms.totalSize.value = material.dashSize + material.gapSize;

+		uniforms.scale.value = material.scale;

+

+	};

+

+	function refreshUniformsParticle ( uniforms, material ) {

+

+		uniforms.psColor.value = material.color;

+		uniforms.opacity.value = material.opacity;

+		uniforms.size.value = material.size;

+		uniforms.scale.value = _canvas.height / 2.0; // TODO: Cache this.

+

+		uniforms.map.value = material.map;

+

+	};

+

+	function refreshUniformsFog ( uniforms, fog ) {

+

+		uniforms.fogColor.value = fog.color;

+

+		if ( fog instanceof THREE.Fog ) {

+

+			uniforms.fogNear.value = fog.near;

+			uniforms.fogFar.value = fog.far;

+

+		} else if ( fog instanceof THREE.FogExp2 ) {

+

+			uniforms.fogDensity.value = fog.density;

+

+		}

+

+	};

+

+	function refreshUniformsPhong ( uniforms, material ) {

+

+		uniforms.shininess.value = material.shininess;

+

+		if ( _this.gammaInput ) {

+

+			uniforms.ambient.value.copyGammaToLinear( material.ambient );

+			uniforms.emissive.value.copyGammaToLinear( material.emissive );

+			uniforms.specular.value.copyGammaToLinear( material.specular );

+

+		} else {

+

+			uniforms.ambient.value = material.ambient;

+			uniforms.emissive.value = material.emissive;

+			uniforms.specular.value = material.specular;

+

+		}

+

+		if ( material.wrapAround ) {

+

+			uniforms.wrapRGB.value.copy( material.wrapRGB );

+

+		}

+

+	};

+

+	function refreshUniformsLambert ( uniforms, material ) {

+

+		if ( _this.gammaInput ) {

+

+			uniforms.ambient.value.copyGammaToLinear( material.ambient );

+			uniforms.emissive.value.copyGammaToLinear( material.emissive );

+

+		} else {

+

+			uniforms.ambient.value = material.ambient;

+			uniforms.emissive.value = material.emissive;

+

+		}

+

+		if ( material.wrapAround ) {

+

+			uniforms.wrapRGB.value.copy( material.wrapRGB );

+

+		}

+

+	};

+

+	function refreshUniformsLights ( uniforms, lights ) {

+

+		uniforms.ambientLightColor.value = lights.ambient;

+

+		uniforms.directionalLightColor.value = lights.directional.colors;

+		uniforms.directionalLightDirection.value = lights.directional.positions;

+

+		uniforms.pointLightColor.value = lights.point.colors;

+		uniforms.pointLightPosition.value = lights.point.positions;

+		uniforms.pointLightDistance.value = lights.point.distances;

+

+		uniforms.spotLightColor.value = lights.spot.colors;

+		uniforms.spotLightPosition.value = lights.spot.positions;

+		uniforms.spotLightDistance.value = lights.spot.distances;

+		uniforms.spotLightDirection.value = lights.spot.directions;

+		uniforms.spotLightAngleCos.value = lights.spot.anglesCos;

+		uniforms.spotLightExponent.value = lights.spot.exponents;

+

+		uniforms.hemisphereLightSkyColor.value = lights.hemi.skyColors;

+		uniforms.hemisphereLightGroundColor.value = lights.hemi.groundColors;

+		uniforms.hemisphereLightDirection.value = lights.hemi.positions;

+

+	};

+

+	function refreshUniformsShadow ( uniforms, lights ) {

+

+		if ( uniforms.shadowMatrix ) {

+

+			var j = 0;

+

+			for ( var i = 0, il = lights.length; i < il; i ++ ) {

+

+				var light = lights[ i ];

+

+				if ( ! light.castShadow ) continue;

+

+				if ( light instanceof THREE.SpotLight || ( light instanceof THREE.DirectionalLight && ! light.shadowCascade ) ) {

+

+					uniforms.shadowMap.value[ j ] = light.shadowMap;

+					uniforms.shadowMapSize.value[ j ] = light.shadowMapSize;

+

+					uniforms.shadowMatrix.value[ j ] = light.shadowMatrix;

+

+					uniforms.shadowDarkness.value[ j ] = light.shadowDarkness;

+					uniforms.shadowBias.value[ j ] = light.shadowBias;

+

+					j ++;

+

+				}

+

+			}

+

+		}

+

+	};

+

+	// Uniforms (load to GPU)

+

+	function loadUniformsMatrices ( uniforms, object ) {

+

+		_gl.uniformMatrix4fv( uniforms.modelViewMatrix, false, object._modelViewMatrix.elements );

+

+		if ( uniforms.normalMatrix ) {

+

+			_gl.uniformMatrix3fv( uniforms.normalMatrix, false, object._normalMatrix.elements );

+

+		}

+

+	};

+

+	function getTextureUnit() {

+

+		var textureUnit = _usedTextureUnits;

+

+		if ( textureUnit >= _maxTextures ) {

+

+			console.warn( "WebGLRenderer: trying to use " + textureUnit + " texture units while this GPU supports only " + _maxTextures );

+

+		}

+

+		_usedTextureUnits += 1;

+

+		return textureUnit;

+

+	};

+

+	function loadUniformsGeneric ( program, uniforms ) {

+

+		var uniform, value, type, location, texture, textureUnit, i, il, j, jl, offset;

+

+		for ( j = 0, jl = uniforms.length; j < jl; j ++ ) {

+

+			location = program.uniforms[ uniforms[ j ][ 1 ] ];

+			if ( !location ) continue;

+

+			uniform = uniforms[ j ][ 0 ];

+

+			type = uniform.type;

+			value = uniform.value;

+

+			if ( type === "i" ) { // single integer

+

+				_gl.uniform1i( location, value );

+

+			} else if ( type === "f" ) { // single float

+

+				_gl.uniform1f( location, value );

+

+			} else if ( type === "v2" ) { // single THREE.Vector2

+

+				_gl.uniform2f( location, value.x, value.y );

+

+			} else if ( type === "v3" ) { // single THREE.Vector3

+

+				_gl.uniform3f( location, value.x, value.y, value.z );

+

+			} else if ( type === "v4" ) { // single THREE.Vector4

+

+				_gl.uniform4f( location, value.x, value.y, value.z, value.w );

+

+			} else if ( type === "c" ) { // single THREE.Color

+

+				_gl.uniform3f( location, value.r, value.g, value.b );

+

+			} else if ( type === "iv1" ) { // flat array of integers (JS or typed array)

+

+				_gl.uniform1iv( location, value );

+

+			} else if ( type === "iv" ) { // flat array of integers with 3 x N size (JS or typed array)

+

+				_gl.uniform3iv( location, value );

+

+			} else if ( type === "fv1" ) { // flat array of floats (JS or typed array)

+

+				_gl.uniform1fv( location, value );

+

+			} else if ( type === "fv" ) { // flat array of floats with 3 x N size (JS or typed array)

+

+				_gl.uniform3fv( location, value );

+

+			} else if ( type === "v2v" ) { // array of THREE.Vector2

+

+				if ( uniform._array === undefined ) {

+

+					uniform._array = new Float32Array( 2 * value.length );

+

+				}

+

+				for ( i = 0, il = value.length; i < il; i ++ ) {

+

+					offset = i * 2;

+

+					uniform._array[ offset ] 	 = value[ i ].x;

+					uniform._array[ offset + 1 ] = value[ i ].y;

+

+				}

+

+				_gl.uniform2fv( location, uniform._array );

+

+			} else if ( type === "v3v" ) { // array of THREE.Vector3

+

+				if ( uniform._array === undefined ) {

+

+					uniform._array = new Float32Array( 3 * value.length );

+

+				}

+

+				for ( i = 0, il = value.length; i < il; i ++ ) {

+

+					offset = i * 3;

+

+					uniform._array[ offset ] 	 = value[ i ].x;

+					uniform._array[ offset + 1 ] = value[ i ].y;

+					uniform._array[ offset + 2 ] = value[ i ].z;

+

+				}

+

+				_gl.uniform3fv( location, uniform._array );

+

+			} else if ( type === "v4v" ) { // array of THREE.Vector4

+

+				if ( uniform._array === undefined ) {

+

+					uniform._array = new Float32Array( 4 * value.length );

+

+				}

+

+				for ( i = 0, il = value.length; i < il; i ++ ) {

+

+					offset = i * 4;

+

+					uniform._array[ offset ] 	 = value[ i ].x;

+					uniform._array[ offset + 1 ] = value[ i ].y;

+					uniform._array[ offset + 2 ] = value[ i ].z;

+					uniform._array[ offset + 3 ] = value[ i ].w;

+

+				}

+

+				_gl.uniform4fv( location, uniform._array );

+

+			} else if ( type === "m4") { // single THREE.Matrix4

+

+				if ( uniform._array === undefined ) {

+

+					uniform._array = new Float32Array( 16 );

+

+				}

+

+				value.flattenToArray( uniform._array );

+				_gl.uniformMatrix4fv( location, false, uniform._array );

+

+			} else if ( type === "m4v" ) { // array of THREE.Matrix4

+

+				if ( uniform._array === undefined ) {

+

+					uniform._array = new Float32Array( 16 * value.length );

+

+				}

+

+				for ( i = 0, il = value.length; i < il; i ++ ) {

+

+					value[ i ].flattenToArrayOffset( uniform._array, i * 16 );

+

+				}

+

+				_gl.uniformMatrix4fv( location, false, uniform._array );

+

+			} else if ( type === "t" ) { // single THREE.Texture (2d or cube)

+

+				texture = value;

+				textureUnit = getTextureUnit();

+

+				_gl.uniform1i( location, textureUnit );

+

+				if ( !texture ) continue;

+

+				if ( texture.image instanceof Array && texture.image.length === 6 ) {

+

+					setCubeTexture( texture, textureUnit );

+

+				} else if ( texture instanceof THREE.WebGLRenderTargetCube ) {

+

+					setCubeTextureDynamic( texture, textureUnit );

+

+				} else {

+

+					_this.setTexture( texture, textureUnit );

+

+				}

+

+			} else if ( type === "tv" ) { // array of THREE.Texture (2d)

+

+				if ( uniform._array === undefined ) {

+

+					uniform._array = [];

+

+				}

+

+				for( i = 0, il = uniform.value.length; i < il; i ++ ) {

+

+					uniform._array[ i ] = getTextureUnit();

+

+				}

+

+				_gl.uniform1iv( location, uniform._array );

+

+				for( i = 0, il = uniform.value.length; i < il; i ++ ) {

+

+					texture = uniform.value[ i ];

+					textureUnit = uniform._array[ i ];

+

+					if ( !texture ) continue;

+

+					_this.setTexture( texture, textureUnit );

+

+				}

+

+			}

+

+		}

+

+	};

+

+	function setupMatrices ( object, camera ) {

+

+		object._modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );

+

+		object._normalMatrix.getInverse( object._modelViewMatrix );

+		object._normalMatrix.transpose();

+

+	};

+

+	//

+

+	function setColorGamma( array, offset, color, intensitySq ) {

+

+		array[ offset ]     = color.r * color.r * intensitySq;

+		array[ offset + 1 ] = color.g * color.g * intensitySq;

+		array[ offset + 2 ] = color.b * color.b * intensitySq;

+

+	};

+

+	function setColorLinear( array, offset, color, intensity ) {

+

+		array[ offset ]     = color.r * intensity;

+		array[ offset + 1 ] = color.g * intensity;

+		array[ offset + 2 ] = color.b * intensity;

+

+	};

+

+	function setupLights ( program, lights ) {

+

+		var l, ll, light, n,

+		r = 0, g = 0, b = 0,

+		color, skyColor, groundColor,

+		intensity,  intensitySq,

+		position,

+		distance,

+

+		zlights = _lights,

+

+		dirColors = zlights.directional.colors,

+		dirPositions = zlights.directional.positions,

+

+		pointColors = zlights.point.colors,

+		pointPositions = zlights.point.positions,

+		pointDistances = zlights.point.distances,

+

+		spotColors = zlights.spot.colors,

+		spotPositions = zlights.spot.positions,

+		spotDistances = zlights.spot.distances,

+		spotDirections = zlights.spot.directions,

+		spotAnglesCos = zlights.spot.anglesCos,

+		spotExponents = zlights.spot.exponents,

+

+		hemiSkyColors = zlights.hemi.skyColors,

+		hemiGroundColors = zlights.hemi.groundColors,

+		hemiPositions = zlights.hemi.positions,

+

+		dirLength = 0,

+		pointLength = 0,

+		spotLength = 0,

+		hemiLength = 0,

+

+		dirCount = 0,

+		pointCount = 0,

+		spotCount = 0,

+		hemiCount = 0,

+

+		dirOffset = 0,

+		pointOffset = 0,

+		spotOffset = 0,

+		hemiOffset = 0;

+

+		for ( l = 0, ll = lights.length; l < ll; l ++ ) {

+

+			light = lights[ l ];

+

+			if ( light.onlyShadow ) continue;

+

+			color = light.color;

+			intensity = light.intensity;

+			distance = light.distance;

+

+			if ( light instanceof THREE.AmbientLight ) {

+

+				if ( ! light.visible ) continue;

+

+				if ( _this.gammaInput ) {

+

+					r += color.r * color.r;

+					g += color.g * color.g;

+					b += color.b * color.b;

+

+				} else {

+

+					r += color.r;

+					g += color.g;

+					b += color.b;

+

+				}

+

+			} else if ( light instanceof THREE.DirectionalLight ) {

+

+				dirCount += 1;

+

+				if ( ! light.visible ) continue;

+

+				_direction.getPositionFromMatrix( light.matrixWorld );

+				_vector3.getPositionFromMatrix( light.target.matrixWorld );

+				_direction.sub( _vector3 );

+				_direction.normalize();

+

+				// skip lights with undefined direction

+				// these create troubles in OpenGL (making pixel black)

+

+				if ( _direction.x === 0 && _direction.y === 0 && _direction.z === 0 ) continue;

+

+				dirOffset = dirLength * 3;

+

+				dirPositions[ dirOffset ]     = _direction.x;

+				dirPositions[ dirOffset + 1 ] = _direction.y;

+				dirPositions[ dirOffset + 2 ] = _direction.z;

+

+				if ( _this.gammaInput ) {

+

+					setColorGamma( dirColors, dirOffset, color, intensity * intensity );

+

+				} else {

+

+					setColorLinear( dirColors, dirOffset, color, intensity );

+

+				}

+

+				dirLength += 1;

+

+			} else if ( light instanceof THREE.PointLight ) {

+

+				pointCount += 1;

+

+				if ( ! light.visible ) continue;

+

+				pointOffset = pointLength * 3;

+

+				if ( _this.gammaInput ) {

+

+					setColorGamma( pointColors, pointOffset, color, intensity * intensity );

+

+				} else {

+

+					setColorLinear( pointColors, pointOffset, color, intensity );

+

+				}

+

+				_vector3.getPositionFromMatrix( light.matrixWorld );

+

+				pointPositions[ pointOffset ]     = _vector3.x;

+				pointPositions[ pointOffset + 1 ] = _vector3.y;

+				pointPositions[ pointOffset + 2 ] = _vector3.z;

+

+				pointDistances[ pointLength ] = distance;

+

+				pointLength += 1;

+

+			} else if ( light instanceof THREE.SpotLight ) {

+

+				spotCount += 1;

+

+				if ( ! light.visible ) continue;

+

+				spotOffset = spotLength * 3;

+

+				if ( _this.gammaInput ) {

+

+					setColorGamma( spotColors, spotOffset, color, intensity * intensity );

+

+				} else {

+

+					setColorLinear( spotColors, spotOffset, color, intensity );

+

+				}

+

+				_vector3.getPositionFromMatrix( light.matrixWorld );

+

+				spotPositions[ spotOffset ]     = _vector3.x;

+				spotPositions[ spotOffset + 1 ] = _vector3.y;

+				spotPositions[ spotOffset + 2 ] = _vector3.z;

+

+				spotDistances[ spotLength ] = distance;

+

+				_direction.copy( _vector3 );

+				_vector3.getPositionFromMatrix( light.target.matrixWorld );

+				_direction.sub( _vector3 );

+				_direction.normalize();

+

+				spotDirections[ spotOffset ]     = _direction.x;

+				spotDirections[ spotOffset + 1 ] = _direction.y;

+				spotDirections[ spotOffset + 2 ] = _direction.z;

+

+				spotAnglesCos[ spotLength ] = Math.cos( light.angle );

+				spotExponents[ spotLength ] = light.exponent;

+

+				spotLength += 1;

+

+			} else if ( light instanceof THREE.HemisphereLight ) {

+

+				hemiCount += 1;

+

+				if ( ! light.visible ) continue;

+

+				_direction.getPositionFromMatrix( light.matrixWorld );

+				_direction.normalize();

+

+				// skip lights with undefined direction

+				// these create troubles in OpenGL (making pixel black)

+

+				if ( _direction.x === 0 && _direction.y === 0 && _direction.z === 0 ) continue;

+

+				hemiOffset = hemiLength * 3;

+

+				hemiPositions[ hemiOffset ]     = _direction.x;

+				hemiPositions[ hemiOffset + 1 ] = _direction.y;

+				hemiPositions[ hemiOffset + 2 ] = _direction.z;

+

+				skyColor = light.color;

+				groundColor = light.groundColor;

+

+				if ( _this.gammaInput ) {

+

+					intensitySq = intensity * intensity;

+

+					setColorGamma( hemiSkyColors, hemiOffset, skyColor, intensitySq );

+					setColorGamma( hemiGroundColors, hemiOffset, groundColor, intensitySq );

+

+				} else {

+

+					setColorLinear( hemiSkyColors, hemiOffset, skyColor, intensity );

+					setColorLinear( hemiGroundColors, hemiOffset, groundColor, intensity );

+

+				}

+

+				hemiLength += 1;

+

+			}

+

+		}

+

+		// null eventual remains from removed lights

+		// (this is to avoid if in shader)

+

+		for ( l = dirLength * 3, ll = Math.max( dirColors.length, dirCount * 3 ); l < ll; l ++ ) dirColors[ l ] = 0.0;

+		for ( l = pointLength * 3, ll = Math.max( pointColors.length, pointCount * 3 ); l < ll; l ++ ) pointColors[ l ] = 0.0;

+		for ( l = spotLength * 3, ll = Math.max( spotColors.length, spotCount * 3 ); l < ll; l ++ ) spotColors[ l ] = 0.0;

+		for ( l = hemiLength * 3, ll = Math.max( hemiSkyColors.length, hemiCount * 3 ); l < ll; l ++ ) hemiSkyColors[ l ] = 0.0;

+		for ( l = hemiLength * 3, ll = Math.max( hemiGroundColors.length, hemiCount * 3 ); l < ll; l ++ ) hemiGroundColors[ l ] = 0.0;

+

+		zlights.directional.length = dirLength;

+		zlights.point.length = pointLength;

+		zlights.spot.length = spotLength;

+		zlights.hemi.length = hemiLength;

+

+		zlights.ambient[ 0 ] = r;

+		zlights.ambient[ 1 ] = g;

+		zlights.ambient[ 2 ] = b;

+

+	};

+

+	// GL state setting

+

+	this.setFaceCulling = function ( cullFace, frontFaceDirection ) {

+

+		if ( cullFace === THREE.CullFaceNone ) {

+

+			_gl.disable( _gl.CULL_FACE );

+

+		} else {

+

+			if ( frontFaceDirection === THREE.FrontFaceDirectionCW ) {

+

+				_gl.frontFace( _gl.CW );

+

+			} else {

+

+				_gl.frontFace( _gl.CCW );

+

+			}

+

+			if ( cullFace === THREE.CullFaceBack ) {

+

+				_gl.cullFace( _gl.BACK );

+

+			} else if ( cullFace === THREE.CullFaceFront ) {

+

+				_gl.cullFace( _gl.FRONT );

+

+			} else {

+

+				_gl.cullFace( _gl.FRONT_AND_BACK );

+

+			}

+

+			_gl.enable( _gl.CULL_FACE );

+

+		}

+

+	};

+

+	this.setMaterialFaces = function ( material ) {

+

+		var doubleSided = material.side === THREE.DoubleSide;

+		var flipSided = material.side === THREE.BackSide;

+

+		if ( _oldDoubleSided !== doubleSided ) {

+

+			if ( doubleSided ) {

+

+				_gl.disable( _gl.CULL_FACE );

+

+			} else {

+

+				_gl.enable( _gl.CULL_FACE );

+

+			}

+

+			_oldDoubleSided = doubleSided;

+

+		}

+

+		if ( _oldFlipSided !== flipSided ) {

+

+			if ( flipSided ) {

+

+				_gl.frontFace( _gl.CW );

+

+			} else {

+

+				_gl.frontFace( _gl.CCW );

+

+			}

+

+			_oldFlipSided = flipSided;

+

+		}

+

+	};

+

+	this.setDepthTest = function ( depthTest ) {

+

+		if ( _oldDepthTest !== depthTest ) {

+

+			if ( depthTest ) {

+

+				_gl.enable( _gl.DEPTH_TEST );

+

+			} else {

+

+				_gl.disable( _gl.DEPTH_TEST );

+

+			}

+

+			_oldDepthTest = depthTest;

+

+		}

+

+	};

+

+	this.setDepthWrite = function ( depthWrite ) {

+

+		if ( _oldDepthWrite !== depthWrite ) {

+

+			_gl.depthMask( depthWrite );

+			_oldDepthWrite = depthWrite;

+

+		}

+

+	};

+

+	function setLineWidth ( width ) {

+

+		if ( width !== _oldLineWidth ) {

+

+			_gl.lineWidth( width );

+

+			_oldLineWidth = width;

+

+		}

+

+	};

+

+	function setPolygonOffset ( polygonoffset, factor, units ) {

+

+		if ( _oldPolygonOffset !== polygonoffset ) {

+

+			if ( polygonoffset ) {

+

+				_gl.enable( _gl.POLYGON_OFFSET_FILL );

+

+			} else {

+

+				_gl.disable( _gl.POLYGON_OFFSET_FILL );

+

+			}

+

+			_oldPolygonOffset = polygonoffset;

+

+		}

+

+		if ( polygonoffset && ( _oldPolygonOffsetFactor !== factor || _oldPolygonOffsetUnits !== units ) ) {

+

+			_gl.polygonOffset( factor, units );

+

+			_oldPolygonOffsetFactor = factor;

+			_oldPolygonOffsetUnits = units;

+

+		}

+

+	};

+

+	this.setBlending = function ( blending, blendEquation, blendSrc, blendDst ) {

+

+		if ( blending !== _oldBlending ) {

+

+			if ( blending === THREE.NoBlending ) {

+

+				_gl.disable( _gl.BLEND );

+

+			} else if ( blending === THREE.AdditiveBlending ) {

+

+				_gl.enable( _gl.BLEND );

+				_gl.blendEquation( _gl.FUNC_ADD );

+				_gl.blendFunc( _gl.SRC_ALPHA, _gl.ONE );

+

+			} else if ( blending === THREE.SubtractiveBlending ) {

+

+				// TODO: Find blendFuncSeparate() combination

+				_gl.enable( _gl.BLEND );

+				_gl.blendEquation( _gl.FUNC_ADD );

+				_gl.blendFunc( _gl.ZERO, _gl.ONE_MINUS_SRC_COLOR );

+

+			} else if ( blending === THREE.MultiplyBlending ) {

+

+				// TODO: Find blendFuncSeparate() combination

+				_gl.enable( _gl.BLEND );

+				_gl.blendEquation( _gl.FUNC_ADD );

+				_gl.blendFunc( _gl.ZERO, _gl.SRC_COLOR );

+

+			} else if ( blending === THREE.CustomBlending ) {

+

+				_gl.enable( _gl.BLEND );

+

+			} else {

+

+				_gl.enable( _gl.BLEND );

+				_gl.blendEquationSeparate( _gl.FUNC_ADD, _gl.FUNC_ADD );

+				_gl.blendFuncSeparate( _gl.SRC_ALPHA, _gl.ONE_MINUS_SRC_ALPHA, _gl.ONE, _gl.ONE_MINUS_SRC_ALPHA );

+

+			}

+

+			_oldBlending = blending;

+

+		}

+

+		if ( blending === THREE.CustomBlending ) {

+

+			if ( blendEquation !== _oldBlendEquation ) {

+

+				_gl.blendEquation( paramThreeToGL( blendEquation ) );

+

+				_oldBlendEquation = blendEquation;

+

+			}

+

+			if ( blendSrc !== _oldBlendSrc || blendDst !== _oldBlendDst ) {

+

+				_gl.blendFunc( paramThreeToGL( blendSrc ), paramThreeToGL( blendDst ) );

+

+				_oldBlendSrc = blendSrc;

+				_oldBlendDst = blendDst;

+

+			}

+

+		} else {

+

+			_oldBlendEquation = null;

+			_oldBlendSrc = null;

+			_oldBlendDst = null;

+

+		}

+

+	};

+

+	// Defines

+

+	function generateDefines ( defines ) {

+

+		var value, chunk, chunks = [];

+

+		for ( var d in defines ) {

+

+			value = defines[ d ];

+			if ( value === false ) continue;

+

+			chunk = "#define " + d + " " + value;

+			chunks.push( chunk );

+

+		}

+

+		return chunks.join( "\n" );

+

+	};

+

+	// Shaders

+

+	function buildProgram ( shaderID, fragmentShader, vertexShader, uniforms, attributes, defines, parameters ) {

+

+		var p, pl, d, program, code;

+		var chunks = [];

+

+		// Generate code

+

+		if ( shaderID ) {

+

+			chunks.push( shaderID );

+

+		} else {

+

+			chunks.push( fragmentShader );

+			chunks.push( vertexShader );

+

+		}

+

+		for ( d in defines ) {

+

+			chunks.push( d );

+			chunks.push( defines[ d ] );

+

+		}

+

+		for ( p in parameters ) {

+

+			chunks.push( p );

+			chunks.push( parameters[ p ] );

+

+		}

+

+		code = chunks.join();

+

+		// Check if code has been already compiled

+

+		for ( p = 0, pl = _programs.length; p < pl; p ++ ) {

+

+			var programInfo = _programs[ p ];

+

+			if ( programInfo.code === code ) {

+

+				//console.log( "Code already compiled." /*: \n\n" + code*/ );

+

+				programInfo.usedTimes ++;

+

+				return programInfo.program;

+

+			}

+

+		}

+

+		var shadowMapTypeDefine = "SHADOWMAP_TYPE_BASIC";

+

+		if ( parameters.shadowMapType === THREE.PCFShadowMap ) {

+

+			shadowMapTypeDefine = "SHADOWMAP_TYPE_PCF";

+

+		} else if ( parameters.shadowMapType === THREE.PCFSoftShadowMap ) {

+

+			shadowMapTypeDefine = "SHADOWMAP_TYPE_PCF_SOFT";

+

+		}

+

+		//console.log( "building new program " );

+

+		//

+

+		var customDefines = generateDefines( defines );

+

+		//

+

+		program = _gl.createProgram();

+

+		var prefix_vertex = [

+

+			"precision " + _precision + " float;",

+

+			customDefines,

+

+			_supportsVertexTextures ? "#define VERTEX_TEXTURES" : "",

+

+			_this.gammaInput ? "#define GAMMA_INPUT" : "",

+			_this.gammaOutput ? "#define GAMMA_OUTPUT" : "",

+			_this.physicallyBasedShading ? "#define PHYSICALLY_BASED_SHADING" : "",

+

+			"#define MAX_DIR_LIGHTS " + parameters.maxDirLights,

+			"#define MAX_POINT_LIGHTS " + parameters.maxPointLights,

+			"#define MAX_SPOT_LIGHTS " + parameters.maxSpotLights,

+			"#define MAX_HEMI_LIGHTS " + parameters.maxHemiLights,

+

+			"#define MAX_SHADOWS " + parameters.maxShadows,

+

+			"#define MAX_BONES " + parameters.maxBones,

+

+			parameters.map ? "#define USE_MAP" : "",

+			parameters.envMap ? "#define USE_ENVMAP" : "",

+			parameters.lightMap ? "#define USE_LIGHTMAP" : "",

+			parameters.bumpMap ? "#define USE_BUMPMAP" : "",

+			parameters.normalMap ? "#define USE_NORMALMAP" : "",

+			parameters.specularMap ? "#define USE_SPECULARMAP" : "",

+			parameters.vertexColors ? "#define USE_COLOR" : "",

+

+			parameters.skinning ? "#define USE_SKINNING" : "",

+			parameters.useVertexTexture ? "#define BONE_TEXTURE" : "",

+			parameters.boneTextureWidth ? "#define N_BONE_PIXEL_X " + parameters.boneTextureWidth.toFixed( 1 ) : "",

+			parameters.boneTextureHeight ? "#define N_BONE_PIXEL_Y " + parameters.boneTextureHeight.toFixed( 1 ) : "",

+

+			parameters.morphTargets ? "#define USE_MORPHTARGETS" : "",

+			parameters.morphNormals ? "#define USE_MORPHNORMALS" : "",

+			parameters.perPixel ? "#define PHONG_PER_PIXEL" : "",

+			parameters.wrapAround ? "#define WRAP_AROUND" : "",

+			parameters.doubleSided ? "#define DOUBLE_SIDED" : "",

+			parameters.flipSided ? "#define FLIP_SIDED" : "",

+

+			parameters.shadowMapEnabled ? "#define USE_SHADOWMAP" : "",

+			parameters.shadowMapEnabled ? "#define " + shadowMapTypeDefine : "",

+			parameters.shadowMapDebug ? "#define SHADOWMAP_DEBUG" : "",

+			parameters.shadowMapCascade ? "#define SHADOWMAP_CASCADE" : "",

+

+			parameters.sizeAttenuation ? "#define USE_SIZEATTENUATION" : "",

+

+			"uniform mat4 modelMatrix;",

+			"uniform mat4 modelViewMatrix;",

+			"uniform mat4 projectionMatrix;",

+			"uniform mat4 viewMatrix;",

+			"uniform mat3 normalMatrix;",

+			"uniform vec3 cameraPosition;",

+

+			"attribute vec3 position;",

+			"attribute vec3 normal;",

+			"attribute vec2 uv;",

+			"attribute vec2 uv2;",

+

+			"#ifdef USE_COLOR",

+

+				"attribute vec3 color;",

+

+			"#endif",

+

+			"#ifdef USE_MORPHTARGETS",

+

+				"attribute vec3 morphTarget0;",

+				"attribute vec3 morphTarget1;",

+				"attribute vec3 morphTarget2;",

+				"attribute vec3 morphTarget3;",

+

+				"#ifdef USE_MORPHNORMALS",

+

+					"attribute vec3 morphNormal0;",

+					"attribute vec3 morphNormal1;",

+					"attribute vec3 morphNormal2;",

+					"attribute vec3 morphNormal3;",

+

+				"#else",

+

+					"attribute vec3 morphTarget4;",

+					"attribute vec3 morphTarget5;",

+					"attribute vec3 morphTarget6;",

+					"attribute vec3 morphTarget7;",

+

+				"#endif",

+

+			"#endif",

+

+			"#ifdef USE_SKINNING",

+

+				"attribute vec4 skinIndex;",

+				"attribute vec4 skinWeight;",

+

+			"#endif",

+

+			""

+

+		].join("\n");

+

+		var prefix_fragment = [

+

+			"precision " + _precision + " float;",

+

+			( parameters.bumpMap || parameters.normalMap ) ? "#extension GL_OES_standard_derivatives : enable" : "",

+

+			customDefines,

+

+			"#define MAX_DIR_LIGHTS " + parameters.maxDirLights,

+			"#define MAX_POINT_LIGHTS " + parameters.maxPointLights,

+			"#define MAX_SPOT_LIGHTS " + parameters.maxSpotLights,

+			"#define MAX_HEMI_LIGHTS " + parameters.maxHemiLights,

+

+			"#define MAX_SHADOWS " + parameters.maxShadows,

+

+			parameters.alphaTest ? "#define ALPHATEST " + parameters.alphaTest: "",

+

+			_this.gammaInput ? "#define GAMMA_INPUT" : "",

+			_this.gammaOutput ? "#define GAMMA_OUTPUT" : "",

+			_this.physicallyBasedShading ? "#define PHYSICALLY_BASED_SHADING" : "",

+

+			( parameters.useFog && parameters.fog ) ? "#define USE_FOG" : "",

+			( parameters.useFog && parameters.fogExp ) ? "#define FOG_EXP2" : "",

+

+			parameters.map ? "#define USE_MAP" : "",

+			parameters.envMap ? "#define USE_ENVMAP" : "",

+			parameters.lightMap ? "#define USE_LIGHTMAP" : "",

+			parameters.bumpMap ? "#define USE_BUMPMAP" : "",

+			parameters.normalMap ? "#define USE_NORMALMAP" : "",

+			parameters.specularMap ? "#define USE_SPECULARMAP" : "",

+			parameters.vertexColors ? "#define USE_COLOR" : "",

+

+			parameters.metal ? "#define METAL" : "",

+			parameters.perPixel ? "#define PHONG_PER_PIXEL" : "",

+			parameters.wrapAround ? "#define WRAP_AROUND" : "",

+			parameters.doubleSided ? "#define DOUBLE_SIDED" : "",

+			parameters.flipSided ? "#define FLIP_SIDED" : "",

+

+			parameters.shadowMapEnabled ? "#define USE_SHADOWMAP" : "",

+			parameters.shadowMapEnabled ? "#define " + shadowMapTypeDefine : "",

+			parameters.shadowMapDebug ? "#define SHADOWMAP_DEBUG" : "",

+			parameters.shadowMapCascade ? "#define SHADOWMAP_CASCADE" : "",

+

+			"uniform mat4 viewMatrix;",

+			"uniform vec3 cameraPosition;",

+			""

+

+		].join("\n");

+

+		var glFragmentShader = getShader( "fragment", prefix_fragment + fragmentShader );

+		var glVertexShader = getShader( "vertex", prefix_vertex + vertexShader );

+

+		_gl.attachShader( program, glVertexShader );

+		_gl.attachShader( program, glFragmentShader );

+

+		_gl.linkProgram( program );

+

+		if ( !_gl.getProgramParameter( program, _gl.LINK_STATUS ) ) {

+

+			console.error( "Could not initialise shader\n" + "VALIDATE_STATUS: " + _gl.getProgramParameter( program, _gl.VALIDATE_STATUS ) + ", gl error [" + _gl.getError() + "]" );

+

+		}

+

+		// clean up

+

+		_gl.deleteShader( glFragmentShader );

+		_gl.deleteShader( glVertexShader );

+

+		//console.log( prefix_fragment + fragmentShader );

+		//console.log( prefix_vertex + vertexShader );

+

+		program.uniforms = {};

+		program.attributes = {};

+

+		var identifiers, u, a, i;

+

+		// cache uniform locations

+

+		identifiers = [

+

+			'viewMatrix', 'modelViewMatrix', 'projectionMatrix', 'normalMatrix', 'modelMatrix', 'cameraPosition',

+			'morphTargetInfluences'

+

+		];

+

+		if ( parameters.useVertexTexture ) {

+

+			identifiers.push( 'boneTexture' );

+

+		} else {

+

+			identifiers.push( 'boneGlobalMatrices' );

+

+		}

+

+		for ( u in uniforms ) {

+

+			identifiers.push( u );

+

+		}

+

+		cacheUniformLocations( program, identifiers );

+

+		// cache attributes locations

+

+		identifiers = [

+

+			"position", "normal", "uv", "uv2", "tangent", "color",

+			"skinIndex", "skinWeight", "lineDistance"

+

+		];

+

+		for ( i = 0; i < parameters.maxMorphTargets; i ++ ) {

+

+			identifiers.push( "morphTarget" + i );

+

+		}

+

+		for ( i = 0; i < parameters.maxMorphNormals; i ++ ) {

+

+			identifiers.push( "morphNormal" + i );

+

+		}

+

+		for ( a in attributes ) {

+

+			identifiers.push( a );

+

+		}

+

+		cacheAttributeLocations( program, identifiers );

+

+		program.id = _programs_counter ++;

+

+		_programs.push( { program: program, code: code, usedTimes: 1 } );

+

+		_this.info.memory.programs = _programs.length;

+

+		return program;

+

+	};

+

+	// Shader parameters cache

+

+	function cacheUniformLocations ( program, identifiers ) {

+

+		var i, l, id;

+

+		for( i = 0, l = identifiers.length; i < l; i ++ ) {

+

+			id = identifiers[ i ];

+			program.uniforms[ id ] = _gl.getUniformLocation( program, id );

+

+		}

+

+	};

+

+	function cacheAttributeLocations ( program, identifiers ) {

+

+		var i, l, id;

+

+		for( i = 0, l = identifiers.length; i < l; i ++ ) {

+

+			id = identifiers[ i ];

+			program.attributes[ id ] = _gl.getAttribLocation( program, id );

+

+		}

+

+	};

+

+	function addLineNumbers ( string ) {

+

+		var chunks = string.split( "\n" );

+

+		for ( var i = 0, il = chunks.length; i < il; i ++ ) {

+

+			// Chrome reports shader errors on lines

+			// starting counting from 1

+

+			chunks[ i ] = ( i + 1 ) + ": " + chunks[ i ];

+

+		}

+

+		return chunks.join( "\n" );

+

+	};

+

+	function getShader ( type, string ) {

+

+		var shader;

+

+		if ( type === "fragment" ) {

+

+			shader = _gl.createShader( _gl.FRAGMENT_SHADER );

+

+		} else if ( type === "vertex" ) {

+

+			shader = _gl.createShader( _gl.VERTEX_SHADER );

+

+		}

+

+		_gl.shaderSource( shader, string );

+		_gl.compileShader( shader );

+

+		if ( !_gl.getShaderParameter( shader, _gl.COMPILE_STATUS ) ) {

+

+			console.error( _gl.getShaderInfoLog( shader ) );

+			console.error( addLineNumbers( string ) );

+			return null;

+

+		}

+

+		return shader;

+

+	};

+

+	// Textures

+

+

+	function isPowerOfTwo ( value ) {

+

+		return ( value & ( value - 1 ) ) === 0;

+

+	};

+

+	function setTextureParameters ( textureType, texture, isImagePowerOfTwo ) {

+

+		if ( isImagePowerOfTwo ) {

+

+			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, paramThreeToGL( texture.wrapS ) );

+			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, paramThreeToGL( texture.wrapT ) );

+

+			_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, paramThreeToGL( texture.magFilter ) );

+			_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, paramThreeToGL( texture.minFilter ) );

+

+		} else {

+

+			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE );

+			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE );

+

+			_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterFallback( texture.magFilter ) );

+			_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterFallback( texture.minFilter ) );

+

+		}

+

+		if ( _glExtensionTextureFilterAnisotropic && texture.type !== THREE.FloatType ) {

+

+			if ( texture.anisotropy > 1 || texture.__oldAnisotropy ) {

+

+				_gl.texParameterf( textureType, _glExtensionTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, _maxAnisotropy ) );

+				texture.__oldAnisotropy = texture.anisotropy;

+

+			}

+

+		}

+

+	};

+

+	this.setTexture = function ( texture, slot ) {

+

+		if ( texture.needsUpdate ) {

+

+			if ( ! texture.__webglInit ) {

+

+				texture.__webglInit = true;

+

+				texture.addEventListener( 'dispose', onTextureDispose );

+

+				texture.__webglTexture = _gl.createTexture();

+

+				_this.info.memory.textures ++;

+

+			}

+

+			_gl.activeTexture( _gl.TEXTURE0 + slot );

+			_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );

+

+			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );

+			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );

+			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );

+

+			var image = texture.image,

+			isImagePowerOfTwo = isPowerOfTwo( image.width ) && isPowerOfTwo( image.height ),

+			glFormat = paramThreeToGL( texture.format ),

+			glType = paramThreeToGL( texture.type );

+

+			setTextureParameters( _gl.TEXTURE_2D, texture, isImagePowerOfTwo );

+

+			var mipmap, mipmaps = texture.mipmaps;

+

+			if ( texture instanceof THREE.DataTexture ) {

+

+				// use manually created mipmaps if available

+				// if there are no manual mipmaps

+				// set 0 level mipmap and then use GL to generate other mipmap levels

+

+				if ( mipmaps.length > 0 && isImagePowerOfTwo ) {

+

+					for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {

+

+						mipmap = mipmaps[ i ];

+						_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

+

+					}

+

+					texture.generateMipmaps = false;

+

+				} else {

+

+					_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, image.width, image.height, 0, glFormat, glType, image.data );

+

+				}

+

+			} else if ( texture instanceof THREE.CompressedTexture ) {

+

+				// compressed textures can only use manually created mipmaps

+				// WebGL can't generate mipmaps for DDS textures

+

+				for( var i = 0, il = mipmaps.length; i < il; i ++ ) {

+

+					mipmap = mipmaps[ i ];

+					_gl.compressedTexImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, mipmap.data );

+

+				}

+

+			} else { // regular Texture (image, video, canvas)

+

+				// use manually created mipmaps if available

+				// if there are no manual mipmaps

+				// set 0 level mipmap and then use GL to generate other mipmap levels

+

+				if ( mipmaps.length > 0 && isImagePowerOfTwo ) {

+

+					for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {

+

+						mipmap = mipmaps[ i ];

+						_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, glFormat, glType, mipmap );

+

+					}

+

+					texture.generateMipmaps = false;

+

+				} else {

+

+					_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, glFormat, glType, texture.image );

+

+				}

+

+			}

+

+			if ( texture.generateMipmaps && isImagePowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_2D );

+

+			texture.needsUpdate = false;

+

+			if ( texture.onUpdate ) texture.onUpdate();

+

+		} else {

+

+			_gl.activeTexture( _gl.TEXTURE0 + slot );

+			_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );

+

+		}

+

+	};

+

+	function clampToMaxSize ( image, maxSize ) {

+

+		if ( image.width <= maxSize && image.height <= maxSize ) {

+

+			return image;

+

+		}

+

+		// Warning: Scaling through the canvas will only work with images that use

+		// premultiplied alpha.

+

+		var maxDimension = Math.max( image.width, image.height );

+		var newWidth = Math.floor( image.width * maxSize / maxDimension );

+		var newHeight = Math.floor( image.height * maxSize / maxDimension );

+

+		var canvas = document.createElement( 'canvas' );

+		canvas.width = newWidth;

+		canvas.height = newHeight;

+

+		var ctx = canvas.getContext( "2d" );

+		ctx.drawImage( image, 0, 0, image.width, image.height, 0, 0, newWidth, newHeight );

+

+		return canvas;

+

+	}

+

+	function setCubeTexture ( texture, slot ) {

+

+		if ( texture.image.length === 6 ) {

+

+			if ( texture.needsUpdate ) {

+

+				if ( ! texture.image.__webglTextureCube ) {

+

+					texture.image.__webglTextureCube = _gl.createTexture();

+

+					_this.info.memory.textures ++;

+

+				}

+

+				_gl.activeTexture( _gl.TEXTURE0 + slot );

+				_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, texture.image.__webglTextureCube );

+

+				_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );

+

+				var isCompressed = texture instanceof THREE.CompressedTexture;

+

+				var cubeImage = [];

+

+				for ( var i = 0; i < 6; i ++ ) {

+

+					if ( _this.autoScaleCubemaps && ! isCompressed ) {

+

+						cubeImage[ i ] = clampToMaxSize( texture.image[ i ], _maxCubemapSize );

+

+					} else {

+

+						cubeImage[ i ] = texture.image[ i ];

+

+					}

+

+				}

+

+				var image = cubeImage[ 0 ],

+				isImagePowerOfTwo = isPowerOfTwo( image.width ) && isPowerOfTwo( image.height ),

+				glFormat = paramThreeToGL( texture.format ),

+				glType = paramThreeToGL( texture.type );

+

+				setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture, isImagePowerOfTwo );

+

+				for ( var i = 0; i < 6; i ++ ) {

+

+					if ( isCompressed ) {

+

+						var mipmap, mipmaps = cubeImage[ i ].mipmaps;

+

+						for( var j = 0, jl = mipmaps.length; j < jl; j ++ ) {

+

+							mipmap = mipmaps[ j ];

+							_gl.compressedTexImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glFormat, mipmap.width, mipmap.height, 0, mipmap.data );

+

+						}

+

+					} else {

+

+						_gl.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glFormat, glFormat, glType, cubeImage[ i ] );

+

+					}

+

+				}

+

+				if ( texture.generateMipmaps && isImagePowerOfTwo ) {

+

+					_gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );

+

+				}

+

+				texture.needsUpdate = false;

+

+				if ( texture.onUpdate ) texture.onUpdate();

+

+			} else {

+

+				_gl.activeTexture( _gl.TEXTURE0 + slot );

+				_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, texture.image.__webglTextureCube );

+

+			}

+

+		}

+

+	};

+

+	function setCubeTextureDynamic ( texture, slot ) {

+

+		_gl.activeTexture( _gl.TEXTURE0 + slot );

+		_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, texture.__webglTexture );

+

+	};

+

+	// Render targets

+

+	function setupFrameBuffer ( framebuffer, renderTarget, textureTarget ) {

+

+		_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );

+		_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, textureTarget, renderTarget.__webglTexture, 0 );

+

+	};

+

+	function setupRenderBuffer ( renderbuffer, renderTarget  ) {

+

+		_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );

+

+		if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {

+

+			_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_COMPONENT16, renderTarget.width, renderTarget.height );

+			_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );

+

+		/* For some reason this is not working. Defaulting to RGBA4.

+		} else if( ! renderTarget.depthBuffer && renderTarget.stencilBuffer ) {

+

+			_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.STENCIL_INDEX8, renderTarget.width, renderTarget.height );

+			_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );

+		*/

+		} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {

+

+			_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height );

+			_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );

+

+		} else {

+

+			_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.RGBA4, renderTarget.width, renderTarget.height );

+

+		}

+

+	};

+

+	this.setRenderTarget = function ( renderTarget ) {

+

+		var isCube = ( renderTarget instanceof THREE.WebGLRenderTargetCube );

+

+		if ( renderTarget && ! renderTarget.__webglFramebuffer ) {

+

+			if ( renderTarget.depthBuffer === undefined ) renderTarget.depthBuffer = true;

+			if ( renderTarget.stencilBuffer === undefined ) renderTarget.stencilBuffer = true;

+

+			renderTarget.addEventListener( 'dispose', onRenderTargetDispose );

+

+			renderTarget.__webglTexture = _gl.createTexture();

+

+			_this.info.memory.textures ++;

+

+			// Setup texture, create render and frame buffers

+

+			var isTargetPowerOfTwo = isPowerOfTwo( renderTarget.width ) && isPowerOfTwo( renderTarget.height ),

+				glFormat = paramThreeToGL( renderTarget.format ),

+				glType = paramThreeToGL( renderTarget.type );

+

+			if ( isCube ) {

+

+				renderTarget.__webglFramebuffer = [];

+				renderTarget.__webglRenderbuffer = [];

+

+				_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, renderTarget.__webglTexture );

+				setTextureParameters( _gl.TEXTURE_CUBE_MAP, renderTarget, isTargetPowerOfTwo );

+

+				for ( var i = 0; i < 6; i ++ ) {

+

+					renderTarget.__webglFramebuffer[ i ] = _gl.createFramebuffer();

+					renderTarget.__webglRenderbuffer[ i ] = _gl.createRenderbuffer();

+

+					_gl.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );

+

+					setupFrameBuffer( renderTarget.__webglFramebuffer[ i ], renderTarget, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i );

+					setupRenderBuffer( renderTarget.__webglRenderbuffer[ i ], renderTarget );

+

+				}

+

+				if ( isTargetPowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );

+

+			} else {

+

+				renderTarget.__webglFramebuffer = _gl.createFramebuffer();

+

+				if ( renderTarget.shareDepthFrom ) {

+

+					renderTarget.__webglRenderbuffer = renderTarget.shareDepthFrom.__webglRenderbuffer;

+

+				} else {

+

+					renderTarget.__webglRenderbuffer = _gl.createRenderbuffer();

+

+				}

+

+				_gl.bindTexture( _gl.TEXTURE_2D, renderTarget.__webglTexture );

+				setTextureParameters( _gl.TEXTURE_2D, renderTarget, isTargetPowerOfTwo );

+

+				_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );

+

+				setupFrameBuffer( renderTarget.__webglFramebuffer, renderTarget, _gl.TEXTURE_2D );

+

+				if ( renderTarget.shareDepthFrom ) {

+

+					if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {

+

+						_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderTarget.__webglRenderbuffer );

+

+					} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {

+

+						_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderTarget.__webglRenderbuffer );

+

+					}

+

+				} else {

+

+					setupRenderBuffer( renderTarget.__webglRenderbuffer, renderTarget );

+

+				}

+

+				if ( isTargetPowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_2D );

+

+			}

+

+			// Release everything

+

+			if ( isCube ) {

+

+				_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, null );

+

+			} else {

+

+				_gl.bindTexture( _gl.TEXTURE_2D, null );

+

+			}

+

+			_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );

+			_gl.bindFramebuffer( _gl.FRAMEBUFFER, null );

+

+		}

+

+		var framebuffer, width, height, vx, vy;

+

+		if ( renderTarget ) {

+

+			if ( isCube ) {

+

+				framebuffer = renderTarget.__webglFramebuffer[ renderTarget.activeCubeFace ];

+

+			} else {

+

+				framebuffer = renderTarget.__webglFramebuffer;

+

+			}

+

+			width = renderTarget.width;

+			height = renderTarget.height;

+

+			vx = 0;

+			vy = 0;

+

+		} else {

+

+			framebuffer = null;

+

+			width = _viewportWidth;

+			height = _viewportHeight;

+

+			vx = _viewportX;

+			vy = _viewportY;

+

+		}

+

+		if ( framebuffer !== _currentFramebuffer ) {

+

+			_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );

+			_gl.viewport( vx, vy, width, height );

+

+			_currentFramebuffer = framebuffer;

+

+		}

+

+		_currentWidth = width;

+		_currentHeight = height;

+

+	};

+

+	function updateRenderTargetMipmap ( renderTarget ) {

+

+		if ( renderTarget instanceof THREE.WebGLRenderTargetCube ) {

+

+			_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, renderTarget.__webglTexture );

+			_gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );

+			_gl.bindTexture( _gl.TEXTURE_CUBE_MAP, null );

+

+		} else {

+

+			_gl.bindTexture( _gl.TEXTURE_2D, renderTarget.__webglTexture );

+			_gl.generateMipmap( _gl.TEXTURE_2D );

+			_gl.bindTexture( _gl.TEXTURE_2D, null );

+

+		}

+

+	};

+

+	// Fallback filters for non-power-of-2 textures

+

+	function filterFallback ( f ) {

+

+		if ( f === THREE.NearestFilter || f === THREE.NearestMipMapNearestFilter || f === THREE.NearestMipMapLinearFilter ) {

+

+			return _gl.NEAREST;

+

+		}

+

+		return _gl.LINEAR;

+

+	};

+

+	// Map three.js constants to WebGL constants

+

+	function paramThreeToGL ( p ) {

+

+		if ( p === THREE.RepeatWrapping ) return _gl.REPEAT;

+		if ( p === THREE.ClampToEdgeWrapping ) return _gl.CLAMP_TO_EDGE;

+		if ( p === THREE.MirroredRepeatWrapping ) return _gl.MIRRORED_REPEAT;

+

+		if ( p === THREE.NearestFilter ) return _gl.NEAREST;

+		if ( p === THREE.NearestMipMapNearestFilter ) return _gl.NEAREST_MIPMAP_NEAREST;

+		if ( p === THREE.NearestMipMapLinearFilter ) return _gl.NEAREST_MIPMAP_LINEAR;

+

+		if ( p === THREE.LinearFilter ) return _gl.LINEAR;

+		if ( p === THREE.LinearMipMapNearestFilter ) return _gl.LINEAR_MIPMAP_NEAREST;

+		if ( p === THREE.LinearMipMapLinearFilter ) return _gl.LINEAR_MIPMAP_LINEAR;

+

+		if ( p === THREE.UnsignedByteType ) return _gl.UNSIGNED_BYTE;

+		if ( p === THREE.UnsignedShort4444Type ) return _gl.UNSIGNED_SHORT_4_4_4_4;

+		if ( p === THREE.UnsignedShort5551Type ) return _gl.UNSIGNED_SHORT_5_5_5_1;

+		if ( p === THREE.UnsignedShort565Type ) return _gl.UNSIGNED_SHORT_5_6_5;

+

+		if ( p === THREE.ByteType ) return _gl.BYTE;

+		if ( p === THREE.ShortType ) return _gl.SHORT;

+		if ( p === THREE.UnsignedShortType ) return _gl.UNSIGNED_SHORT;

+		if ( p === THREE.IntType ) return _gl.INT;

+		if ( p === THREE.UnsignedIntType ) return _gl.UNSIGNED_INT;

+		if ( p === THREE.FloatType ) return _gl.FLOAT;

+

+		if ( p === THREE.AlphaFormat ) return _gl.ALPHA;

+		if ( p === THREE.RGBFormat ) return _gl.RGB;

+		if ( p === THREE.RGBAFormat ) return _gl.RGBA;

+		if ( p === THREE.LuminanceFormat ) return _gl.LUMINANCE;

+		if ( p === THREE.LuminanceAlphaFormat ) return _gl.LUMINANCE_ALPHA;

+

+		if ( p === THREE.AddEquation ) return _gl.FUNC_ADD;

+		if ( p === THREE.SubtractEquation ) return _gl.FUNC_SUBTRACT;

+		if ( p === THREE.ReverseSubtractEquation ) return _gl.FUNC_REVERSE_SUBTRACT;

+

+		if ( p === THREE.ZeroFactor ) return _gl.ZERO;

+		if ( p === THREE.OneFactor ) return _gl.ONE;

+		if ( p === THREE.SrcColorFactor ) return _gl.SRC_COLOR;

+		if ( p === THREE.OneMinusSrcColorFactor ) return _gl.ONE_MINUS_SRC_COLOR;

+		if ( p === THREE.SrcAlphaFactor ) return _gl.SRC_ALPHA;

+		if ( p === THREE.OneMinusSrcAlphaFactor ) return _gl.ONE_MINUS_SRC_ALPHA;

+		if ( p === THREE.DstAlphaFactor ) return _gl.DST_ALPHA;

+		if ( p === THREE.OneMinusDstAlphaFactor ) return _gl.ONE_MINUS_DST_ALPHA;

+

+		if ( p === THREE.DstColorFactor ) return _gl.DST_COLOR;

+		if ( p === THREE.OneMinusDstColorFactor ) return _gl.ONE_MINUS_DST_COLOR;

+		if ( p === THREE.SrcAlphaSaturateFactor ) return _gl.SRC_ALPHA_SATURATE;

+

+		if ( _glExtensionCompressedTextureS3TC !== undefined ) {

+

+			if ( p === THREE.RGB_S3TC_DXT1_Format ) return _glExtensionCompressedTextureS3TC.COMPRESSED_RGB_S3TC_DXT1_EXT;

+			if ( p === THREE.RGBA_S3TC_DXT1_Format ) return _glExtensionCompressedTextureS3TC.COMPRESSED_RGBA_S3TC_DXT1_EXT;

+			if ( p === THREE.RGBA_S3TC_DXT3_Format ) return _glExtensionCompressedTextureS3TC.COMPRESSED_RGBA_S3TC_DXT3_EXT;

+			if ( p === THREE.RGBA_S3TC_DXT5_Format ) return _glExtensionCompressedTextureS3TC.COMPRESSED_RGBA_S3TC_DXT5_EXT;

+

+		}

+

+		return 0;

+

+	};

+

+	// Allocations

+

+	function allocateBones ( object ) {

+

+		if ( _supportsBoneTextures && object && object.useVertexTexture ) {

+

+			return 1024;

+

+		} else {

+

+			// default for when object is not specified

+			// ( for example when prebuilding shader

+			//   to be used with multiple objects )

+			//

+			// 	- leave some extra space for other uniforms

+			//  - limit here is ANGLE's 254 max uniform vectors

+			//    (up to 54 should be safe)

+

+			var nVertexUniforms = _gl.getParameter( _gl.MAX_VERTEX_UNIFORM_VECTORS );

+			var nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );

+

+			var maxBones = nVertexMatrices;

+

+			if ( object !== undefined && object instanceof THREE.SkinnedMesh ) {

+

+				maxBones = Math.min( object.bones.length, maxBones );

+

+				if ( maxBones < object.bones.length ) {

+

+					console.warn( "WebGLRenderer: too many bones - " + object.bones.length + ", this GPU supports just " + maxBones + " (try OpenGL instead of ANGLE)" );

+

+				}

+

+			}

+

+			return maxBones;

+

+		}

+

+	};

+

+	function allocateLights ( lights ) {

+

+		var l, ll, light, dirLights, pointLights, spotLights, hemiLights;

+

+		dirLights = pointLights = spotLights = hemiLights = 0;

+

+		for ( l = 0, ll = lights.length; l < ll; l ++ ) {

+

+			light = lights[ l ];

+

+			if ( light.onlyShadow ) continue;

+

+			if ( light instanceof THREE.DirectionalLight ) dirLights ++;

+			if ( light instanceof THREE.PointLight ) pointLights ++;

+			if ( light instanceof THREE.SpotLight ) spotLights ++;

+			if ( light instanceof THREE.HemisphereLight ) hemiLights ++;

+

+		}

+

+		return { 'directional' : dirLights, 'point' : pointLights, 'spot': spotLights, 'hemi': hemiLights };

+

+	};

+

+	function allocateShadows ( lights ) {

+

+		var l, ll, light, maxShadows = 0;

+

+		for ( l = 0, ll = lights.length; l < ll; l++ ) {

+

+			light = lights[ l ];

+

+			if ( ! light.castShadow ) continue;

+

+			if ( light instanceof THREE.SpotLight ) maxShadows ++;

+			if ( light instanceof THREE.DirectionalLight && ! light.shadowCascade ) maxShadows ++;

+

+		}

+

+		return maxShadows;

+

+	};

+

+	// Initialization

+

+	function initGL () {

+

+		try {

+

+			if ( ! ( _gl = _canvas.getContext( 'experimental-webgl', { alpha: _alpha, premultipliedAlpha: _premultipliedAlpha, antialias: _antialias, stencil: _stencil, preserveDrawingBuffer: _preserveDrawingBuffer } ) ) ) {

+

+				throw 'Error creating WebGL context.';

+

+			}

+

+		} catch ( error ) {

+

+			console.error( error );

+

+		}

+

+		_glExtensionTextureFloat = _gl.getExtension( 'OES_texture_float' );

+		_glExtensionStandardDerivatives = _gl.getExtension( 'OES_standard_derivatives' );

+

+		_glExtensionTextureFilterAnisotropic = _gl.getExtension( 'EXT_texture_filter_anisotropic' ) ||

+											   _gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) ||

+											   _gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );

+

+

+		_glExtensionCompressedTextureS3TC = _gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) ||

+											_gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) ||

+											_gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );

+

+		if ( ! _glExtensionTextureFloat ) {

+

+			console.log( 'THREE.WebGLRenderer: Float textures not supported.' );

+

+		}

+

+		if ( ! _glExtensionStandardDerivatives ) {

+

+			console.log( 'THREE.WebGLRenderer: Standard derivatives not supported.' );

+

+		}

+

+		if ( ! _glExtensionTextureFilterAnisotropic ) {

+

+			console.log( 'THREE.WebGLRenderer: Anisotropic texture filtering not supported.' );

+

+		}

+

+		if ( ! _glExtensionCompressedTextureS3TC ) {

+

+			console.log( 'THREE.WebGLRenderer: S3TC compressed textures not supported.' );

+

+		}

+		

+		if ( _gl.getShaderPrecisionFormat === undefined ) {

+			

+			_gl.getShaderPrecisionFormat = function() { 

+				

+				return {

+					"rangeMin"  : 1,

+					"rangeMax"  : 1,

+					"precision" : 1

+				};

+				

+			}

+		}

+

+	};

+

+	function setDefaultGLState () {

+

+		_gl.clearColor( 0, 0, 0, 1 );

+		_gl.clearDepth( 1 );

+		_gl.clearStencil( 0 );

+

+		_gl.enable( _gl.DEPTH_TEST );

+		_gl.depthFunc( _gl.LEQUAL );

+

+		_gl.frontFace( _gl.CCW );

+		_gl.cullFace( _gl.BACK );

+		_gl.enable( _gl.CULL_FACE );

+

+		_gl.enable( _gl.BLEND );

+		_gl.blendEquation( _gl.FUNC_ADD );

+		_gl.blendFunc( _gl.SRC_ALPHA, _gl.ONE_MINUS_SRC_ALPHA );

+

+		_gl.clearColor( _clearColor.r, _clearColor.g, _clearColor.b, _clearAlpha );

+

+	};

+

+	// default plugins (order is important)

+

+	this.shadowMapPlugin = new THREE.ShadowMapPlugin();

+	this.addPrePlugin( this.shadowMapPlugin );

+

+	this.addPostPlugin( new THREE.SpritePlugin() );

+	this.addPostPlugin( new THREE.LensFlarePlugin() );

+

+};

+/**

+ * @author szimek / https://github.com/szimek/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.WebGLRenderTarget = function ( width, height, options ) {

+

+	THREE.EventDispatcher.call( this );

+

+	this.width = width;

+	this.height = height;

+

+	options = options || {};

+

+	this.wrapS = options.wrapS !== undefined ? options.wrapS : THREE.ClampToEdgeWrapping;

+	this.wrapT = options.wrapT !== undefined ? options.wrapT : THREE.ClampToEdgeWrapping;

+

+	this.magFilter = options.magFilter !== undefined ? options.magFilter : THREE.LinearFilter;

+	this.minFilter = options.minFilter !== undefined ? options.minFilter : THREE.LinearMipMapLinearFilter;

+

+	this.anisotropy = options.anisotropy !== undefined ? options.anisotropy : 1;

+

+	this.offset = new THREE.Vector2( 0, 0 );

+	this.repeat = new THREE.Vector2( 1, 1 );

+

+	this.format = options.format !== undefined ? options.format : THREE.RGBAFormat;

+	this.type = options.type !== undefined ? options.type : THREE.UnsignedByteType;

+

+	this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;

+	this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : true;

+

+	this.generateMipmaps = true;

+

+	this.shareDepthFrom = null;

+

+};

+

+THREE.WebGLRenderTarget.prototype.clone = function() {

+

+	var tmp = new THREE.WebGLRenderTarget( this.width, this.height );

+

+	tmp.wrapS = this.wrapS;

+	tmp.wrapT = this.wrapT;

+

+	tmp.magFilter = this.magFilter;

+	tmp.minFilter = this.minFilter;

+

+	tmp.anisotropy = this.anisotropy;

+

+	tmp.offset.copy( this.offset );

+	tmp.repeat.copy( this.repeat );

+

+	tmp.format = this.format;

+	tmp.type = this.type;

+

+	tmp.depthBuffer = this.depthBuffer;

+	tmp.stencilBuffer = this.stencilBuffer;

+

+	tmp.generateMipmaps = this.generateMipmaps;

+

+	tmp.shareDepthFrom = this.shareDepthFrom;

+

+	return tmp;

+

+};

+

+THREE.WebGLRenderTarget.prototype.dispose = function () {

+

+	this.dispatchEvent( { type: 'dispose' } );

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com

+ */

+

+THREE.WebGLRenderTargetCube = function ( width, height, options ) {

+

+	THREE.WebGLRenderTarget.call( this, width, height, options );

+

+	this.activeCubeFace = 0; // PX 0, NX 1, PY 2, NY 3, PZ 4, NZ 5

+

+};

+

+THREE.WebGLRenderTargetCube.prototype = Object.create( THREE.WebGLRenderTarget.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.RenderableVertex = function () {

+

+	this.positionWorld = new THREE.Vector3();

+	this.positionScreen = new THREE.Vector4();

+

+	this.visible = true;

+

+};

+

+THREE.RenderableVertex.prototype.copy = function ( vertex ) {

+

+	this.positionWorld.copy( vertex.positionWorld );

+	this.positionScreen.copy( vertex.positionScreen );

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.RenderableFace3 = function () {

+

+	this.v1 = new THREE.RenderableVertex();

+	this.v2 = new THREE.RenderableVertex();

+	this.v3 = new THREE.RenderableVertex();

+

+	this.centroidModel = new THREE.Vector3();

+

+	this.normalModel = new THREE.Vector3();

+	this.normalModelView = new THREE.Vector3();

+

+	this.vertexNormalsLength = 0;

+	this.vertexNormalsModel = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];

+	this.vertexNormalsModelView = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];

+

+	this.color = null;

+	this.material = null;

+	this.uvs = [[]];

+

+	this.z = null;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.RenderableFace4 = function () {

+

+	this.v1 = new THREE.RenderableVertex();

+	this.v2 = new THREE.RenderableVertex();

+	this.v3 = new THREE.RenderableVertex();

+	this.v4 = new THREE.RenderableVertex();

+

+	this.centroidModel = new THREE.Vector3();

+

+	this.normalModel = new THREE.Vector3();

+	this.normalModelView = new THREE.Vector3();

+

+	this.vertexNormalsLength = 0;

+	this.vertexNormalsModel = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];

+	this.vertexNormalsModelView = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];

+

+	this.color = null;

+	this.material = null;

+	this.uvs = [[]];

+

+	this.z = null;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.RenderableObject = function () {

+

+	this.object = null;

+	this.z = null;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.RenderableParticle = function () {

+

+	this.object = null;

+

+	this.x = null;

+	this.y = null;

+	this.z = null;

+

+	this.rotation = null;

+	this.scale = new THREE.Vector2();

+

+	this.material = null;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.RenderableLine = function () {

+

+	this.z = null;

+

+	this.v1 = new THREE.RenderableVertex();

+	this.v2 = new THREE.RenderableVertex();

+

+	this.material = null;

+

+};

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.GeometryUtils = {

+

+	// Merge two geometries or geometry and geometry from object (using object's transform)

+

+	merge: function ( geometry1, object2 /* mesh | geometry */ ) {

+

+		var matrix, normalMatrix,

+		vertexOffset = geometry1.vertices.length,

+		uvPosition = geometry1.faceVertexUvs[ 0 ].length,

+		geometry2 = object2 instanceof THREE.Mesh ? object2.geometry : object2,

+		vertices1 = geometry1.vertices,

+		vertices2 = geometry2.vertices,

+		faces1 = geometry1.faces,

+		faces2 = geometry2.faces,

+		uvs1 = geometry1.faceVertexUvs[ 0 ],

+		uvs2 = geometry2.faceVertexUvs[ 0 ];

+

+		if ( object2 instanceof THREE.Mesh ) {

+

+			object2.matrixAutoUpdate && object2.updateMatrix();

+

+			matrix = object2.matrix;

+

+			normalMatrix = new THREE.Matrix3();

+			normalMatrix.getInverse( matrix );

+			normalMatrix.transpose();

+

+		}

+

+		// vertices

+

+		for ( var i = 0, il = vertices2.length; i < il; i ++ ) {

+

+			var vertex = vertices2[ i ];

+

+			var vertexCopy = vertex.clone();

+

+			if ( matrix ) vertexCopy.applyMatrix4( matrix );

+

+			vertices1.push( vertexCopy );

+

+		}

+

+		// faces

+

+		for ( i = 0, il = faces2.length; i < il; i ++ ) {

+

+			var face = faces2[ i ], faceCopy, normal, color,

+			faceVertexNormals = face.vertexNormals,

+			faceVertexColors = face.vertexColors;

+

+			if ( face instanceof THREE.Face3 ) {

+

+				faceCopy = new THREE.Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );

+

+			} else if ( face instanceof THREE.Face4 ) {

+

+				faceCopy = new THREE.Face4( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset, face.d + vertexOffset );

+

+			}

+

+			faceCopy.normal.copy( face.normal );

+

+			if ( normalMatrix ) {

+

+				faceCopy.normal.applyMatrix3( normalMatrix ).normalize();

+

+			}

+

+			for ( var j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {

+

+				normal = faceVertexNormals[ j ].clone();

+

+				if ( normalMatrix ) {

+

+					normal.applyMatrix3( normalMatrix ).normalize();

+

+				}

+

+				faceCopy.vertexNormals.push( normal );

+

+			}

+

+			faceCopy.color.copy( face.color );

+

+			for ( var j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {

+

+				color = faceVertexColors[ j ];

+				faceCopy.vertexColors.push( color.clone() );

+

+			}

+

+			faceCopy.materialIndex = face.materialIndex;

+

+			faceCopy.centroid.copy( face.centroid );

+

+			if ( matrix ) {

+

+				faceCopy.centroid.applyMatrix4( matrix );

+

+			}

+

+			faces1.push( faceCopy );

+

+		}

+

+		// uvs

+

+		for ( i = 0, il = uvs2.length; i < il; i ++ ) {

+

+			var uv = uvs2[ i ], uvCopy = [];

+

+			for ( var j = 0, jl = uv.length; j < jl; j ++ ) {

+

+				uvCopy.push( new THREE.Vector2( uv[ j ].x, uv[ j ].y ) );

+

+			}

+

+			uvs1.push( uvCopy );

+

+		}

+

+	},

+

+	removeMaterials: function ( geometry, materialIndexArray ) {

+

+		var materialIndexMap = {};

+

+		for ( var i = 0, il = materialIndexArray.length; i < il; i ++ ) {

+

+			materialIndexMap[ materialIndexArray[i] ] = true;

+

+		}

+

+		var face, newFaces = [];

+

+		for ( var i = 0, il = geometry.faces.length; i < il; i ++ ) {

+

+			face = geometry.faces[ i ];

+			if ( ! ( face.materialIndex in materialIndexMap ) ) newFaces.push( face );

+

+		}

+

+		geometry.faces = newFaces;

+

+	},

+

+	// Get random point in triangle (via barycentric coordinates)

+	// 	(uniform distribution)

+	// 	http://www.cgafaq.info/wiki/Random_Point_In_Triangle

+

+	randomPointInTriangle: function ( vectorA, vectorB, vectorC ) {

+

+		var a, b, c,

+			point = new THREE.Vector3(),

+			tmp = THREE.GeometryUtils.__v1;

+

+		a = THREE.GeometryUtils.random();

+		b = THREE.GeometryUtils.random();

+

+		if ( ( a + b ) > 1 ) {

+

+			a = 1 - a;

+			b = 1 - b;

+

+		}

+

+		c = 1 - a - b;

+

+		point.copy( vectorA );

+		point.multiplyScalar( a );

+

+		tmp.copy( vectorB );

+		tmp.multiplyScalar( b );

+

+		point.add( tmp );

+

+		tmp.copy( vectorC );

+		tmp.multiplyScalar( c );

+

+		point.add( tmp );

+

+		return point;

+

+	},

+

+	// Get random point in face (triangle / quad)

+	// (uniform distribution)

+

+	randomPointInFace: function ( face, geometry, useCachedAreas ) {

+

+		var vA, vB, vC, vD;

+

+		if ( face instanceof THREE.Face3 ) {

+

+			vA = geometry.vertices[ face.a ];

+			vB = geometry.vertices[ face.b ];

+			vC = geometry.vertices[ face.c ];

+

+			return THREE.GeometryUtils.randomPointInTriangle( vA, vB, vC );

+

+		} else if ( face instanceof THREE.Face4 ) {

+

+			vA = geometry.vertices[ face.a ];

+			vB = geometry.vertices[ face.b ];

+			vC = geometry.vertices[ face.c ];

+			vD = geometry.vertices[ face.d ];

+

+			var area1, area2;

+

+			if ( useCachedAreas ) {

+

+				if ( face._area1 && face._area2 ) {

+

+					area1 = face._area1;

+					area2 = face._area2;

+

+				} else {

+

+					area1 = THREE.GeometryUtils.triangleArea( vA, vB, vD );

+					area2 = THREE.GeometryUtils.triangleArea( vB, vC, vD );

+

+					face._area1 = area1;

+					face._area2 = area2;

+

+				}

+

+			} else {

+

+				area1 = THREE.GeometryUtils.triangleArea( vA, vB, vD ),

+				area2 = THREE.GeometryUtils.triangleArea( vB, vC, vD );

+

+			}

+

+			var r = THREE.GeometryUtils.random() * ( area1 + area2 );

+

+			if ( r < area1 ) {

+

+				return THREE.GeometryUtils.randomPointInTriangle( vA, vB, vD );

+

+			} else {

+

+				return THREE.GeometryUtils.randomPointInTriangle( vB, vC, vD );

+

+			}

+

+		}

+

+	},

+

+	// Get uniformly distributed random points in mesh

+	// 	- create array with cumulative sums of face areas

+	//  - pick random number from 0 to total area

+	//  - find corresponding place in area array by binary search

+	//	- get random point in face

+

+	randomPointsInGeometry: function ( geometry, n ) {

+

+		var face, i,

+			faces = geometry.faces,

+			vertices = geometry.vertices,

+			il = faces.length,

+			totalArea = 0,

+			cumulativeAreas = [],

+			vA, vB, vC, vD;

+

+		// precompute face areas

+

+		for ( i = 0; i < il; i ++ ) {

+

+			face = faces[ i ];

+

+			if ( face instanceof THREE.Face3 ) {

+

+				vA = vertices[ face.a ];

+				vB = vertices[ face.b ];

+				vC = vertices[ face.c ];

+

+				face._area = THREE.GeometryUtils.triangleArea( vA, vB, vC );

+

+			} else if ( face instanceof THREE.Face4 ) {

+

+				vA = vertices[ face.a ];

+				vB = vertices[ face.b ];

+				vC = vertices[ face.c ];

+				vD = vertices[ face.d ];

+

+				face._area1 = THREE.GeometryUtils.triangleArea( vA, vB, vD );

+				face._area2 = THREE.GeometryUtils.triangleArea( vB, vC, vD );

+

+				face._area = face._area1 + face._area2;

+

+			}

+

+			totalArea += face._area;

+

+			cumulativeAreas[ i ] = totalArea;

+

+		}

+

+		// binary search cumulative areas array

+

+		function binarySearchIndices( value ) {

+

+			function binarySearch( start, end ) {

+

+				// return closest larger index

+				// if exact number is not found

+

+				if ( end < start )

+					return start;

+

+				var mid = start + Math.floor( ( end - start ) / 2 );

+

+				if ( cumulativeAreas[ mid ] > value ) {

+

+					return binarySearch( start, mid - 1 );

+

+				} else if ( cumulativeAreas[ mid ] < value ) {

+

+					return binarySearch( mid + 1, end );

+

+				} else {

+

+					return mid;

+

+				}

+

+			}

+

+			var result = binarySearch( 0, cumulativeAreas.length - 1 )

+			return result;

+

+		}

+

+		// pick random face weighted by face area

+

+		var r, index,

+			result = [];

+

+		var stats = {};

+

+		for ( i = 0; i < n; i ++ ) {

+

+			r = THREE.GeometryUtils.random() * totalArea;

+

+			index = binarySearchIndices( r );

+

+			result[ i ] = THREE.GeometryUtils.randomPointInFace( faces[ index ], geometry, true );

+

+			if ( ! stats[ index ] ) {

+

+				stats[ index ] = 1;

+

+			} else {

+

+				stats[ index ] += 1;

+

+			}

+

+		}

+

+		return result;

+

+	},

+

+	// Get triangle area (half of parallelogram)

+	//	http://mathworld.wolfram.com/TriangleArea.html

+

+	triangleArea: function ( vectorA, vectorB, vectorC ) {

+

+		var tmp1 = THREE.GeometryUtils.__v1,

+			tmp2 = THREE.GeometryUtils.__v2;

+

+		tmp1.subVectors( vectorB, vectorA );

+		tmp2.subVectors( vectorC, vectorA );

+		tmp1.cross( tmp2 );

+

+		return 0.5 * tmp1.length();

+

+	},

+

+	// Center geometry so that 0,0,0 is in center of bounding box

+

+	center: function ( geometry ) {

+

+		geometry.computeBoundingBox();

+

+		var bb = geometry.boundingBox;

+

+		var offset = new THREE.Vector3();

+

+		offset.addVectors( bb.min, bb.max );

+		offset.multiplyScalar( -0.5 );

+

+		geometry.applyMatrix( new THREE.Matrix4().makeTranslation( offset.x, offset.y, offset.z ) );

+		geometry.computeBoundingBox();

+

+		return offset;

+

+	},

+

+	// Normalize UVs to be from <0,1>

+	// (for now just the first set of UVs)

+

+	normalizeUVs: function ( geometry ) {

+

+		var uvSet = geometry.faceVertexUvs[ 0 ];

+

+		for ( var i = 0, il = uvSet.length; i < il; i ++ ) {

+

+			var uvs = uvSet[ i ];

+

+			for ( var j = 0, jl = uvs.length; j < jl; j ++ ) {

+

+				// texture repeat

+

+				if( uvs[ j ].x !== 1.0 ) uvs[ j ].x = uvs[ j ].x - Math.floor( uvs[ j ].x );

+				if( uvs[ j ].y !== 1.0 ) uvs[ j ].y = uvs[ j ].y - Math.floor( uvs[ j ].y );

+

+			}

+

+		}

+

+	},

+

+	triangulateQuads: function ( geometry ) {

+

+		var i, il, j, jl;

+

+		var faces = [];

+		var faceUvs = [];

+		var faceVertexUvs = [];

+

+		for ( i = 0, il = geometry.faceUvs.length; i < il; i ++ ) {

+

+			faceUvs[ i ] = [];

+

+		}

+

+		for ( i = 0, il = geometry.faceVertexUvs.length; i < il; i ++ ) {

+

+			faceVertexUvs[ i ] = [];

+

+		}

+

+		for ( i = 0, il = geometry.faces.length; i < il; i ++ ) {

+

+			var face = geometry.faces[ i ];

+

+			if ( face instanceof THREE.Face4 ) {

+

+				var a = face.a;

+				var b = face.b;

+				var c = face.c;

+				var d = face.d;

+

+				var triA = new THREE.Face3();

+				var triB = new THREE.Face3();

+

+				triA.color.copy( face.color );

+				triB.color.copy( face.color );

+

+				triA.materialIndex = face.materialIndex;

+				triB.materialIndex = face.materialIndex;

+

+				triA.a = a;

+				triA.b = b;

+				triA.c = d;

+

+				triB.a = b;

+				triB.b = c;

+				triB.c = d;

+

+				if ( face.vertexColors.length === 4 ) {

+

+					triA.vertexColors[ 0 ] = face.vertexColors[ 0 ].clone();

+					triA.vertexColors[ 1 ] = face.vertexColors[ 1 ].clone();

+					triA.vertexColors[ 2 ] = face.vertexColors[ 3 ].clone();

+

+					triB.vertexColors[ 0 ] = face.vertexColors[ 1 ].clone();

+					triB.vertexColors[ 1 ] = face.vertexColors[ 2 ].clone();

+					triB.vertexColors[ 2 ] = face.vertexColors[ 3 ].clone();

+

+				}

+

+				faces.push( triA, triB );

+

+				for ( j = 0, jl = geometry.faceVertexUvs.length; j < jl; j ++ ) {

+

+					if ( geometry.faceVertexUvs[ j ].length ) {

+

+						var uvs = geometry.faceVertexUvs[ j ][ i ];

+

+						var uvA = uvs[ 0 ];

+						var uvB = uvs[ 1 ];

+						var uvC = uvs[ 2 ];

+						var uvD = uvs[ 3 ];

+

+						var uvsTriA = [ uvA.clone(), uvB.clone(), uvD.clone() ];

+						var uvsTriB = [ uvB.clone(), uvC.clone(), uvD.clone() ];

+

+						faceVertexUvs[ j ].push( uvsTriA, uvsTriB );

+

+					}

+

+				}

+

+				for ( j = 0, jl = geometry.faceUvs.length; j < jl; j ++ ) {

+

+					if ( geometry.faceUvs[ j ].length ) {

+

+						var faceUv = geometry.faceUvs[ j ][ i ];

+

+						faceUvs[ j ].push( faceUv, faceUv );

+

+					}

+

+				}

+

+			} else {

+

+				faces.push( face );

+

+				for ( j = 0, jl = geometry.faceUvs.length; j < jl; j ++ ) {

+

+					faceUvs[ j ].push( geometry.faceUvs[ j ][ i ] );

+

+				}

+

+				for ( j = 0, jl = geometry.faceVertexUvs.length; j < jl; j ++ ) {

+

+					faceVertexUvs[ j ].push( geometry.faceVertexUvs[ j ][ i ] );

+

+				}

+

+			}

+

+		}

+

+		geometry.faces = faces;

+		geometry.faceUvs = faceUvs;

+		geometry.faceVertexUvs = faceVertexUvs;

+

+		geometry.computeCentroids();

+		geometry.computeFaceNormals();

+		geometry.computeVertexNormals();

+

+		if ( geometry.hasTangents ) geometry.computeTangents();

+

+	},

+

+	setMaterialIndex: function ( geometry, index, startFace, endFace ){

+

+		var faces = geometry.faces;

+		var start = startFace || 0;

+		var end = endFace || faces.length - 1;

+

+		for ( var i = start; i <= end; i ++ ) {

+

+			faces[i].materialIndex = index;

+

+		}

+

+    }

+

+};

+

+THREE.GeometryUtils.random = THREE.Math.random16;

+

+THREE.GeometryUtils.__v1 = new THREE.Vector3();

+THREE.GeometryUtils.__v2 = new THREE.Vector3();

+/**

+ * @author alteredq / http://alteredqualia.com/

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.ImageUtils = {

+

+	crossOrigin: 'anonymous',

+

+	loadTexture: function ( url, mapping, onLoad, onError ) {

+

+		var image = new Image();

+		var texture = new THREE.Texture( image, mapping );

+

+		var loader = new THREE.ImageLoader();

+

+		loader.addEventListener( 'load', function ( event ) {

+

+			texture.image = event.content;

+			texture.needsUpdate = true;

+

+			if ( onLoad ) onLoad( texture );

+

+		} );

+

+		loader.addEventListener( 'error', function ( event ) {

+

+			if ( onError ) onError( event.message );

+

+		} );

+

+		loader.crossOrigin = this.crossOrigin;

+		loader.load( url, image );

+

+		texture.sourceFile = url;

+

+		return texture;

+

+	},

+

+	loadCompressedTexture: function ( url, mapping, onLoad, onError ) {

+

+		var texture = new THREE.CompressedTexture();

+		texture.mapping = mapping;

+

+		var request = new XMLHttpRequest();

+

+		request.onload = function () {

+

+			var buffer = request.response;

+			var dds = THREE.ImageUtils.parseDDS( buffer, true );

+

+			texture.format = dds.format;

+

+			texture.mipmaps = dds.mipmaps;

+			texture.image.width = dds.width;

+			texture.image.height = dds.height;

+

+			// gl.generateMipmap fails for compressed textures

+			// mipmaps must be embedded in the DDS file

+			// or texture filters must not use mipmapping

+

+			texture.generateMipmaps = false;

+

+			texture.needsUpdate = true;

+

+			if ( onLoad ) onLoad( texture );

+

+		}

+

+		request.onerror = onError;

+

+		request.open( 'GET', url, true );

+		request.responseType = "arraybuffer";

+		request.send( null );

+

+		return texture;

+

+	},

+

+	loadTextureCube: function ( array, mapping, onLoad, onError ) {

+

+		var images = [];

+		images.loadCount = 0;

+

+		var texture = new THREE.Texture();

+		texture.image = images;

+		if ( mapping !== undefined ) texture.mapping = mapping;

+

+		// no flipping needed for cube textures

+

+		texture.flipY = false;

+

+		for ( var i = 0, il = array.length; i < il; ++ i ) {

+

+			var cubeImage = new Image();

+			images[ i ] = cubeImage;

+

+			cubeImage.onload = function () {

+

+				images.loadCount += 1;

+

+				if ( images.loadCount === 6 ) {

+

+					texture.needsUpdate = true;

+					if ( onLoad ) onLoad( texture );

+

+				}

+

+			};

+

+			cubeImage.onerror = onError;

+

+			cubeImage.crossOrigin = this.crossOrigin;

+			cubeImage.src = array[ i ];

+

+		}

+

+		return texture;

+

+	},

+

+	loadCompressedTextureCube: function ( array, mapping, onLoad, onError ) {

+

+		var images = [];

+		images.loadCount = 0;

+

+		var texture = new THREE.CompressedTexture();

+		texture.image = images;

+		if ( mapping !== undefined ) texture.mapping = mapping;

+

+		// no flipping for cube textures

+		// (also flipping doesn't work for compressed textures )

+

+		texture.flipY = false;

+

+		// can't generate mipmaps for compressed textures

+		// mips must be embedded in DDS files

+

+		texture.generateMipmaps = false;

+

+		var generateCubeFaceCallback = function ( rq, img ) {

+

+			return function () {

+

+				var buffer = rq.response;

+				var dds = THREE.ImageUtils.parseDDS( buffer, true );

+

+				img.format = dds.format;

+

+				img.mipmaps = dds.mipmaps;

+				img.width = dds.width;

+				img.height = dds.height;

+

+				images.loadCount += 1;

+

+				if ( images.loadCount === 6 ) {

+

+					texture.format = dds.format;

+					texture.needsUpdate = true;

+					if ( onLoad ) onLoad( texture );

+

+				}

+

+			}

+

+		}

+

+		// compressed cubemap textures as 6 separate DDS files

+

+		if ( array instanceof Array ) {

+

+			for ( var i = 0, il = array.length; i < il; ++ i ) {

+

+				var cubeImage = {};

+				images[ i ] = cubeImage;

+

+				var request = new XMLHttpRequest();

+

+				request.onload = generateCubeFaceCallback( request, cubeImage );

+				request.onerror = onError;

+

+				var url = array[ i ];

+

+				request.open( 'GET', url, true );

+				request.responseType = "arraybuffer";

+				request.send( null );

+

+			}

+

+		// compressed cubemap texture stored in a single DDS file

+

+		} else {

+

+			var url = array;

+			var request = new XMLHttpRequest();

+

+			request.onload = function( ) {

+

+				var buffer = request.response;

+				var dds = THREE.ImageUtils.parseDDS( buffer, true );

+

+				if ( dds.isCubemap ) {

+

+					var faces = dds.mipmaps.length / dds.mipmapCount;

+

+					for ( var f = 0; f < faces; f ++ ) {

+

+						images[ f ] = { mipmaps : [] };

+

+						for ( var i = 0; i < dds.mipmapCount; i ++ ) {

+

+							images[ f ].mipmaps.push( dds.mipmaps[ f * dds.mipmapCount + i ] );

+							images[ f ].format = dds.format;

+							images[ f ].width = dds.width;

+							images[ f ].height = dds.height;

+

+						}

+

+					}

+

+					texture.format = dds.format;

+					texture.needsUpdate = true;

+					if ( onLoad ) onLoad( texture );

+

+				}

+

+			}

+

+			request.onerror = onError;

+

+			request.open( 'GET', url, true );

+			request.responseType = "arraybuffer";

+			request.send( null );

+

+		}

+

+		return texture;

+

+	},

+

+	parseDDS: function ( buffer, loadMipmaps ) {

+

+		var dds = { mipmaps: [], width: 0, height: 0, format: null, mipmapCount: 1 };

+

+		// Adapted from @toji's DDS utils

+		//	https://github.com/toji/webgl-texture-utils/blob/master/texture-util/dds.js

+

+		// All values and structures referenced from:

+		// http://msdn.microsoft.com/en-us/library/bb943991.aspx/

+

+		var DDS_MAGIC = 0x20534444;

+

+		var DDSD_CAPS = 0x1,

+			DDSD_HEIGHT = 0x2,

+			DDSD_WIDTH = 0x4,

+			DDSD_PITCH = 0x8,

+			DDSD_PIXELFORMAT = 0x1000,

+			DDSD_MIPMAPCOUNT = 0x20000,

+			DDSD_LINEARSIZE = 0x80000,

+			DDSD_DEPTH = 0x800000;

+

+		var DDSCAPS_COMPLEX = 0x8,

+			DDSCAPS_MIPMAP = 0x400000,

+			DDSCAPS_TEXTURE = 0x1000;

+

+		var DDSCAPS2_CUBEMAP = 0x200,

+			DDSCAPS2_CUBEMAP_POSITIVEX = 0x400,

+			DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800,

+			DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000,

+			DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000,

+			DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000,

+			DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000,

+			DDSCAPS2_VOLUME = 0x200000;

+

+		var DDPF_ALPHAPIXELS = 0x1,

+			DDPF_ALPHA = 0x2,

+			DDPF_FOURCC = 0x4,

+			DDPF_RGB = 0x40,

+			DDPF_YUV = 0x200,

+			DDPF_LUMINANCE = 0x20000;

+

+		function fourCCToInt32( value ) {

+

+			return value.charCodeAt(0) +

+				(value.charCodeAt(1) << 8) +

+				(value.charCodeAt(2) << 16) +

+				(value.charCodeAt(3) << 24);

+

+		}

+

+		function int32ToFourCC( value ) {

+

+			return String.fromCharCode(

+				value & 0xff,

+				(value >> 8) & 0xff,

+				(value >> 16) & 0xff,

+				(value >> 24) & 0xff

+			);

+		}

+

+		var FOURCC_DXT1 = fourCCToInt32("DXT1");

+		var FOURCC_DXT3 = fourCCToInt32("DXT3");

+		var FOURCC_DXT5 = fourCCToInt32("DXT5");

+

+		var headerLengthInt = 31; // The header length in 32 bit ints

+

+		// Offsets into the header array

+

+		var off_magic = 0;

+

+		var off_size = 1;

+		var off_flags = 2;

+		var off_height = 3;

+		var off_width = 4;

+

+		var off_mipmapCount = 7;

+

+		var off_pfFlags = 20;

+		var off_pfFourCC = 21;

+

+		var off_caps = 27;

+		var off_caps2 = 28;

+		var off_caps3 = 29;

+		var off_caps4 = 30;

+

+		// Parse header

+

+		var header = new Int32Array( buffer, 0, headerLengthInt );

+

+		if ( header[ off_magic ] !== DDS_MAGIC ) {

+

+			console.error( "ImageUtils.parseDDS(): Invalid magic number in DDS header" );

+			return dds;

+

+		}

+

+		if ( ! header[ off_pfFlags ] & DDPF_FOURCC ) {

+

+			console.error( "ImageUtils.parseDDS(): Unsupported format, must contain a FourCC code" );

+			return dds;

+

+		}

+

+		var blockBytes;

+

+		var fourCC = header[ off_pfFourCC ];

+

+		switch ( fourCC ) {

+

+			case FOURCC_DXT1:

+

+				blockBytes = 8;

+				dds.format = THREE.RGB_S3TC_DXT1_Format;

+				break;

+

+			case FOURCC_DXT3:

+

+				blockBytes = 16;

+				dds.format = THREE.RGBA_S3TC_DXT3_Format;

+				break;

+

+			case FOURCC_DXT5:

+

+				blockBytes = 16;

+				dds.format = THREE.RGBA_S3TC_DXT5_Format;

+				break;

+

+			default:

+

+				console.error( "ImageUtils.parseDDS(): Unsupported FourCC code: ", int32ToFourCC( fourCC ) );

+				return dds;

+

+		}

+

+		dds.mipmapCount = 1;

+

+		if ( header[ off_flags ] & DDSD_MIPMAPCOUNT && loadMipmaps !== false ) {

+

+			dds.mipmapCount = Math.max( 1, header[ off_mipmapCount ] );

+

+		}

+

+		//TODO: Verify that all faces of the cubemap are present with DDSCAPS2_CUBEMAP_POSITIVEX, etc.

+

+		dds.isCubemap = header[ off_caps2 ] & DDSCAPS2_CUBEMAP ? true : false;

+

+		dds.width = header[ off_width ];

+		dds.height = header[ off_height ];

+

+		var dataOffset = header[ off_size ] + 4;

+

+		// Extract mipmaps buffers

+

+		var width = dds.width;

+		var height = dds.height;

+

+		var faces = dds.isCubemap ? 6 : 1;

+

+		for ( var face = 0; face < faces; face ++ ) {

+

+			for ( var i = 0; i < dds.mipmapCount; i ++ ) {

+

+				var dataLength = Math.max( 4, width ) / 4 * Math.max( 4, height ) / 4 * blockBytes;

+				var byteArray = new Uint8Array( buffer, dataOffset, dataLength );

+

+				var mipmap = { "data": byteArray, "width": width, "height": height };

+				dds.mipmaps.push( mipmap );

+

+				dataOffset += dataLength;

+

+				width = Math.max( width * 0.5, 1 );

+				height = Math.max( height * 0.5, 1 );

+

+			}

+

+			width = dds.width;

+			height = dds.height;

+

+		}

+

+		return dds;

+

+	},

+

+	getNormalMap: function ( image, depth ) {

+

+		// Adapted from http://www.paulbrunt.co.uk/lab/heightnormal/

+

+		var cross = function ( a, b ) {

+

+			return [ a[ 1 ] * b[ 2 ] - a[ 2 ] * b[ 1 ], a[ 2 ] * b[ 0 ] - a[ 0 ] * b[ 2 ], a[ 0 ] * b[ 1 ] - a[ 1 ] * b[ 0 ] ];

+

+		}

+

+		var subtract = function ( a, b ) {

+

+			return [ a[ 0 ] - b[ 0 ], a[ 1 ] - b[ 1 ], a[ 2 ] - b[ 2 ] ];

+

+		}

+

+		var normalize = function ( a ) {

+

+			var l = Math.sqrt( a[ 0 ] * a[ 0 ] + a[ 1 ] * a[ 1 ] + a[ 2 ] * a[ 2 ] );

+			return [ a[ 0 ] / l, a[ 1 ] / l, a[ 2 ] / l ];

+

+		}

+

+		depth = depth | 1;

+

+		var width = image.width;

+		var height = image.height;

+

+		var canvas = document.createElement( 'canvas' );

+		canvas.width = width;

+		canvas.height = height;

+

+		var context = canvas.getContext( '2d' );

+		context.drawImage( image, 0, 0 );

+

+		var data = context.getImageData( 0, 0, width, height ).data;

+		var imageData = context.createImageData( width, height );

+		var output = imageData.data;

+

+		for ( var x = 0; x < width; x ++ ) {

+

+			for ( var y = 0; y < height; y ++ ) {

+

+				var ly = y - 1 < 0 ? 0 : y - 1;

+				var uy = y + 1 > height - 1 ? height - 1 : y + 1;

+				var lx = x - 1 < 0 ? 0 : x - 1;

+				var ux = x + 1 > width - 1 ? width - 1 : x + 1;

+

+				var points = [];

+				var origin = [ 0, 0, data[ ( y * width + x ) * 4 ] / 255 * depth ];

+				points.push( [ - 1, 0, data[ ( y * width + lx ) * 4 ] / 255 * depth ] );

+				points.push( [ - 1, - 1, data[ ( ly * width + lx ) * 4 ] / 255 * depth ] );

+				points.push( [ 0, - 1, data[ ( ly * width + x ) * 4 ] / 255 * depth ] );

+				points.push( [  1, - 1, data[ ( ly * width + ux ) * 4 ] / 255 * depth ] );

+				points.push( [ 1, 0, data[ ( y * width + ux ) * 4 ] / 255 * depth ] );

+				points.push( [ 1, 1, data[ ( uy * width + ux ) * 4 ] / 255 * depth ] );

+				points.push( [ 0, 1, data[ ( uy * width + x ) * 4 ] / 255 * depth ] );

+				points.push( [ - 1, 1, data[ ( uy * width + lx ) * 4 ] / 255 * depth ] );

+

+				var normals = [];

+				var num_points = points.length;

+

+				for ( var i = 0; i < num_points; i ++ ) {

+

+					var v1 = points[ i ];

+					var v2 = points[ ( i + 1 ) % num_points ];

+					v1 = subtract( v1, origin );

+					v2 = subtract( v2, origin );

+					normals.push( normalize( cross( v1, v2 ) ) );

+

+				}

+

+				var normal = [ 0, 0, 0 ];

+

+				for ( var i = 0; i < normals.length; i ++ ) {

+

+					normal[ 0 ] += normals[ i ][ 0 ];

+					normal[ 1 ] += normals[ i ][ 1 ];

+					normal[ 2 ] += normals[ i ][ 2 ];

+

+				}

+

+				normal[ 0 ] /= normals.length;

+				normal[ 1 ] /= normals.length;

+				normal[ 2 ] /= normals.length;

+

+				var idx = ( y * width + x ) * 4;

+

+				output[ idx ] = ( ( normal[ 0 ] + 1.0 ) / 2.0 * 255 ) | 0;

+				output[ idx + 1 ] = ( ( normal[ 1 ] + 1.0 ) / 2.0 * 255 ) | 0;

+				output[ idx + 2 ] = ( normal[ 2 ] * 255 ) | 0;

+				output[ idx + 3 ] = 255;

+

+			}

+

+		}

+

+		context.putImageData( imageData, 0, 0 );

+

+		return canvas;

+

+	},

+

+	generateDataTexture: function ( width, height, color ) {

+

+		var size = width * height;

+		var data = new Uint8Array( 3 * size );

+

+		var r = Math.floor( color.r * 255 );

+		var g = Math.floor( color.g * 255 );

+		var b = Math.floor( color.b * 255 );

+

+		for ( var i = 0; i < size; i ++ ) {

+

+			data[ i * 3 ] 	  = r;

+			data[ i * 3 + 1 ] = g;

+			data[ i * 3 + 2 ] = b;

+

+		}

+

+		var texture = new THREE.DataTexture( data, width, height, THREE.RGBFormat );

+		texture.needsUpdate = true;

+

+		return texture;

+

+	}

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.SceneUtils = {

+

+	createMultiMaterialObject: function ( geometry, materials ) {

+

+		var group = new THREE.Object3D();

+

+		for ( var i = 0, l = materials.length; i < l; i ++ ) {

+

+			group.add( new THREE.Mesh( geometry, materials[ i ] ) );

+

+		}

+

+		return group;

+

+	},

+

+	detach : function ( child, parent, scene ) {

+

+		child.applyMatrix( parent.matrixWorld );

+		parent.remove( child );

+		scene.add( child );

+

+	},

+

+	attach: function ( child, scene, parent ) {

+

+		var matrixWorldInverse = new THREE.Matrix4();

+		matrixWorldInverse.getInverse( parent.matrixWorld );

+		child.applyMatrix( matrixWorldInverse );

+

+		scene.remove( child );

+		parent.add( child );

+

+	}

+

+};

+/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * For Text operations in three.js (See TextGeometry)

+ *

+ * It uses techniques used in:

+ *

+ * 	typeface.js and canvastext

+ * 		For converting fonts and rendering with javascript

+ *		http://typeface.neocracy.org

+ *

+ *	Triangulation ported from AS3

+ *		Simple Polygon Triangulation

+ *		http://actionsnippet.com/?p=1462

+ *

+ * 	A Method to triangulate shapes with holes

+ *		http://www.sakri.net/blog/2009/06/12/an-approach-to-triangulating-polygons-with-holes/

+ *

+ */

+

+THREE.FontUtils = {

+

+	faces : {},

+

+	// Just for now. face[weight][style]

+

+	face : "helvetiker",

+	weight: "normal",

+	style : "normal",

+	size : 150,

+	divisions : 10,

+

+	getFace : function() {

+

+		return this.faces[ this.face ][ this.weight ][ this.style ];

+

+	},

+

+	loadFace : function( data ) {

+

+		var family = data.familyName.toLowerCase();

+

+		var ThreeFont = this;

+

+		ThreeFont.faces[ family ] = ThreeFont.faces[ family ] || {};

+

+		ThreeFont.faces[ family ][ data.cssFontWeight ] = ThreeFont.faces[ family ][ data.cssFontWeight ] || {};

+		ThreeFont.faces[ family ][ data.cssFontWeight ][ data.cssFontStyle ] = data;

+

+		var face = ThreeFont.faces[ family ][ data.cssFontWeight ][ data.cssFontStyle ] = data;

+

+		return data;

+

+	},

+

+	drawText : function( text ) {

+

+		var characterPts = [], allPts = [];

+

+		// RenderText

+

+		var i, p,

+			face = this.getFace(),

+			scale = this.size / face.resolution,

+			offset = 0,

+			chars = String( text ).split( '' ),

+			length = chars.length;

+

+		var fontPaths = [];

+

+		for ( i = 0; i < length; i ++ ) {

+

+			var path = new THREE.Path();

+

+			var ret = this.extractGlyphPoints( chars[ i ], face, scale, offset, path );

+			offset += ret.offset;

+

+			fontPaths.push( ret.path );

+

+		}

+

+		// get the width

+

+		var width = offset / 2;

+		//

+		// for ( p = 0; p < allPts.length; p++ ) {

+		//

+		// 	allPts[ p ].x -= width;

+		//

+		// }

+

+		//var extract = this.extractPoints( allPts, characterPts );

+		//extract.contour = allPts;

+

+		//extract.paths = fontPaths;

+		//extract.offset = width;

+

+		return { paths : fontPaths, offset : width };

+

+	},

+

+

+

+

+	extractGlyphPoints : function( c, face, scale, offset, path ) {

+

+		var pts = [];

+

+		var i, i2, divisions,

+			outline, action, length,

+			scaleX, scaleY,

+			x, y, cpx, cpy, cpx0, cpy0, cpx1, cpy1, cpx2, cpy2,

+			laste,

+			glyph = face.glyphs[ c ] || face.glyphs[ '?' ];

+

+		if ( !glyph ) return;

+

+		if ( glyph.o ) {

+

+			outline = glyph._cachedOutline || ( glyph._cachedOutline = glyph.o.split( ' ' ) );

+			length = outline.length;

+

+			scaleX = scale;

+			scaleY = scale;

+

+			for ( i = 0; i < length; ) {

+

+				action = outline[ i ++ ];

+

+				//console.log( action );

+

+				switch( action ) {

+

+				case 'm':

+

+					// Move To

+

+					x = outline[ i++ ] * scaleX + offset;

+					y = outline[ i++ ] * scaleY;

+

+					path.moveTo( x, y );

+					break;

+

+				case 'l':

+

+					// Line To

+

+					x = outline[ i++ ] * scaleX + offset;

+					y = outline[ i++ ] * scaleY;

+					path.lineTo(x,y);

+					break;

+

+				case 'q':

+

+					// QuadraticCurveTo

+

+					cpx  = outline[ i++ ] * scaleX + offset;

+					cpy  = outline[ i++ ] * scaleY;

+					cpx1 = outline[ i++ ] * scaleX + offset;

+					cpy1 = outline[ i++ ] * scaleY;

+

+					path.quadraticCurveTo(cpx1, cpy1, cpx, cpy);

+

+					laste = pts[ pts.length - 1 ];

+

+					if ( laste ) {

+

+						cpx0 = laste.x;

+						cpy0 = laste.y;

+

+						for ( i2 = 1, divisions = this.divisions; i2 <= divisions; i2 ++ ) {

+

+							var t = i2 / divisions;

+							var tx = THREE.Shape.Utils.b2( t, cpx0, cpx1, cpx );

+							var ty = THREE.Shape.Utils.b2( t, cpy0, cpy1, cpy );

+					  }

+

+				  }

+

+				  break;

+

+				case 'b':

+

+					// Cubic Bezier Curve

+

+					cpx  = outline[ i++ ] *  scaleX + offset;

+					cpy  = outline[ i++ ] *  scaleY;

+					cpx1 = outline[ i++ ] *  scaleX + offset;

+					cpy1 = outline[ i++ ] * -scaleY;

+					cpx2 = outline[ i++ ] *  scaleX + offset;

+					cpy2 = outline[ i++ ] * -scaleY;

+

+					path.bezierCurveTo( cpx, cpy, cpx1, cpy1, cpx2, cpy2 );

+

+					laste = pts[ pts.length - 1 ];

+

+					if ( laste ) {

+

+						cpx0 = laste.x;

+						cpy0 = laste.y;

+

+						for ( i2 = 1, divisions = this.divisions; i2 <= divisions; i2 ++ ) {

+

+							var t = i2 / divisions;

+							var tx = THREE.Shape.Utils.b3( t, cpx0, cpx1, cpx2, cpx );

+							var ty = THREE.Shape.Utils.b3( t, cpy0, cpy1, cpy2, cpy );

+

+						}

+

+					}

+

+					break;

+

+				}

+

+			}

+		}

+

+

+

+		return { offset: glyph.ha*scale, path:path};

+	}

+

+};

+

+

+THREE.FontUtils.generateShapes = function( text, parameters ) {

+

+	// Parameters 

+

+	parameters = parameters || {};

+

+	var size = parameters.size !== undefined ? parameters.size : 100;

+	var curveSegments = parameters.curveSegments !== undefined ? parameters.curveSegments: 4;

+

+	var font = parameters.font !== undefined ? parameters.font : "helvetiker";

+	var weight = parameters.weight !== undefined ? parameters.weight : "normal";

+	var style = parameters.style !== undefined ? parameters.style : "normal";

+

+	THREE.FontUtils.size = size;

+	THREE.FontUtils.divisions = curveSegments;

+

+	THREE.FontUtils.face = font;

+	THREE.FontUtils.weight = weight;

+	THREE.FontUtils.style = style;

+

+	// Get a Font data json object

+

+	var data = THREE.FontUtils.drawText( text );

+

+	var paths = data.paths;

+	var shapes = [];

+

+	for ( var p = 0, pl = paths.length; p < pl; p ++ ) {

+

+		Array.prototype.push.apply( shapes, paths[ p ].toShapes() );

+

+	}

+

+	return shapes;

+

+};

+

+

+/**

+ * This code is a quick port of code written in C++ which was submitted to

+ * flipcode.com by John W. Ratcliff  // July 22, 2000

+ * See original code and more information here:

+ * http://www.flipcode.com/archives/Efficient_Polygon_Triangulation.shtml

+ *

+ * ported to actionscript by Zevan Rosser

+ * www.actionsnippet.com

+ *

+ * ported to javascript by Joshua Koo

+ * http://www.lab4games.net/zz85/blog

+ *

+ */

+

+

+( function( namespace ) {

+

+	var EPSILON = 0.0000000001;

+

+	// takes in an contour array and returns

+

+	var process = function( contour, indices ) {

+

+		var n = contour.length;

+

+		if ( n < 3 ) return null;

+

+		var result = [],

+			verts = [],

+			vertIndices = [];

+

+		/* we want a counter-clockwise polygon in verts */

+

+		var u, v, w;

+

+		if ( area( contour ) > 0.0 ) {

+

+			for ( v = 0; v < n; v++ ) verts[ v ] = v;

+

+		} else {

+

+			for ( v = 0; v < n; v++ ) verts[ v ] = ( n - 1 ) - v;

+

+		}

+

+		var nv = n;

+

+		/*  remove nv - 2 vertices, creating 1 triangle every time */

+

+		var count = 2 * nv;   /* error detection */

+

+		for( v = nv - 1; nv > 2; ) {

+

+			/* if we loop, it is probably a non-simple polygon */

+

+			if ( ( count-- ) <= 0 ) {

+

+				//** Triangulate: ERROR - probable bad polygon!

+

+				//throw ( "Warning, unable to triangulate polygon!" );

+				//return null;

+				// Sometimes warning is fine, especially polygons are triangulated in reverse.

+				console.log( "Warning, unable to triangulate polygon!" );

+

+				if ( indices ) return vertIndices;

+				return result;

+

+			}

+

+			/* three consecutive vertices in current polygon, <u,v,w> */

+

+			u = v; 	 	if ( nv <= u ) u = 0;     /* previous */

+			v = u + 1;  if ( nv <= v ) v = 0;     /* new v    */

+			w = v + 1;  if ( nv <= w ) w = 0;     /* next     */

+

+			if ( snip( contour, u, v, w, nv, verts ) ) {

+

+				var a, b, c, s, t;

+

+				/* true names of the vertices */

+

+				a = verts[ u ];

+				b = verts[ v ];

+				c = verts[ w ];

+

+				/* output Triangle */

+

+				result.push( [ contour[ a ],

+					contour[ b ],

+					contour[ c ] ] );

+

+

+				vertIndices.push( [ verts[ u ], verts[ v ], verts[ w ] ] );

+

+				/* remove v from the remaining polygon */

+

+				for( s = v, t = v + 1; t < nv; s++, t++ ) {

+

+					verts[ s ] = verts[ t ];

+

+				}

+

+				nv--;

+

+				/* reset error detection counter */

+

+				count = 2 * nv;

+

+			}

+

+		}

+

+		if ( indices ) return vertIndices;

+		return result;

+

+	};

+

+	// calculate area of the contour polygon

+

+	var area = function ( contour ) {

+

+		var n = contour.length;

+		var a = 0.0;

+

+		for( var p = n - 1, q = 0; q < n; p = q++ ) {

+

+			a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;

+

+		}

+

+		return a * 0.5;

+

+	};

+

+	var snip = function ( contour, u, v, w, n, verts ) {

+

+		var p;

+		var ax, ay, bx, by;

+		var cx, cy, px, py;

+

+		ax = contour[ verts[ u ] ].x;

+		ay = contour[ verts[ u ] ].y;

+

+		bx = contour[ verts[ v ] ].x;

+		by = contour[ verts[ v ] ].y;

+

+		cx = contour[ verts[ w ] ].x;

+		cy = contour[ verts[ w ] ].y;

+

+		if ( EPSILON > (((bx-ax)*(cy-ay)) - ((by-ay)*(cx-ax))) ) return false;

+

+		var aX, aY, bX, bY, cX, cY;

+		var apx, apy, bpx, bpy, cpx, cpy;

+		var cCROSSap, bCROSScp, aCROSSbp;

+

+		aX = cx - bx;  aY = cy - by;

+		bX = ax - cx;  bY = ay - cy;

+		cX = bx - ax;  cY = by - ay;

+

+		for ( p = 0; p < n; p++ ) {

+

+			if( (p === u) || (p === v) || (p === w) ) continue;

+

+			px = contour[ verts[ p ] ].x

+			py = contour[ verts[ p ] ].y

+

+			apx = px - ax;  apy = py - ay;

+			bpx = px - bx;  bpy = py - by;

+			cpx = px - cx;  cpy = py - cy;

+

+			// see if p is inside triangle abc

+

+			aCROSSbp = aX*bpy - aY*bpx;

+			cCROSSap = cX*apy - cY*apx;

+			bCROSScp = bX*cpy - bY*cpx;

+

+			if ( (aCROSSbp >= 0.0) && (bCROSScp >= 0.0) && (cCROSSap >= 0.0) ) return false;

+

+		}

+

+		return true;

+

+	};

+

+

+	namespace.Triangulate = process;

+	namespace.Triangulate.area = area;

+

+	return namespace;

+

+})(THREE.FontUtils);

+

+// To use the typeface.js face files, hook up the API

+self._typeface_js = { faces: THREE.FontUtils.faces, loadFace: THREE.FontUtils.loadFace };/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ * Extensible curve object

+ *

+ * Some common of Curve methods

+ * .getPoint(t), getTangent(t)

+ * .getPointAt(u), getTagentAt(u)

+ * .getPoints(), .getSpacedPoints()

+ * .getLength()

+ * .updateArcLengths()

+ *

+ * This file contains following classes:

+ *

+ * -- 2d classes --

+ * THREE.Curve

+ * THREE.LineCurve

+ * THREE.QuadraticBezierCurve

+ * THREE.CubicBezierCurve

+ * THREE.SplineCurve

+ * THREE.ArcCurve

+ * THREE.EllipseCurve

+ *

+ * -- 3d classes --

+ * THREE.LineCurve3

+ * THREE.QuadraticBezierCurve3

+ * THREE.CubicBezierCurve3

+ * THREE.SplineCurve3

+ * THREE.ClosedSplineCurve3

+ *

+ * A series of curves can be represented as a THREE.CurvePath

+ *

+ **/

+

+/**************************************************************

+ *	Abstract Curve base class

+ **************************************************************/

+

+THREE.Curve = function () {

+

+};

+

+// Virtual base class method to overwrite and implement in subclasses

+//	- t [0 .. 1]

+

+THREE.Curve.prototype.getPoint = function ( t ) {

+

+	console.log( "Warning, getPoint() not implemented!" );

+	return null;

+

+};

+

+// Get point at relative position in curve according to arc length

+// - u [0 .. 1]

+

+THREE.Curve.prototype.getPointAt = function ( u ) {

+

+	var t = this.getUtoTmapping( u );

+	return this.getPoint( t );

+

+};

+

+// Get sequence of points using getPoint( t )

+

+THREE.Curve.prototype.getPoints = function ( divisions ) {

+

+	if ( !divisions ) divisions = 5;

+

+	var d, pts = [];

+

+	for ( d = 0; d <= divisions; d ++ ) {

+

+		pts.push( this.getPoint( d / divisions ) );

+

+	}

+

+	return pts;

+

+};

+

+// Get sequence of points using getPointAt( u )

+

+THREE.Curve.prototype.getSpacedPoints = function ( divisions ) {

+

+	if ( !divisions ) divisions = 5;

+

+	var d, pts = [];

+

+	for ( d = 0; d <= divisions; d ++ ) {

+

+		pts.push( this.getPointAt( d / divisions ) );

+

+	}

+

+	return pts;

+

+};

+

+// Get total curve arc length

+

+THREE.Curve.prototype.getLength = function () {

+

+	var lengths = this.getLengths();

+	return lengths[ lengths.length - 1 ];

+

+};

+

+// Get list of cumulative segment lengths

+

+THREE.Curve.prototype.getLengths = function ( divisions ) {

+

+	if ( !divisions ) divisions = (this.__arcLengthDivisions) ? (this.__arcLengthDivisions): 200;

+

+	if ( this.cacheArcLengths

+		&& ( this.cacheArcLengths.length == divisions + 1 )

+		&& !this.needsUpdate) {

+

+		//console.log( "cached", this.cacheArcLengths );

+		return this.cacheArcLengths;

+

+	}

+

+	this.needsUpdate = false;

+

+	var cache = [];

+	var current, last = this.getPoint( 0 );

+	var p, sum = 0;

+

+	cache.push( 0 );

+

+	for ( p = 1; p <= divisions; p ++ ) {

+

+		current = this.getPoint ( p / divisions );

+		sum += current.distanceTo( last );

+		cache.push( sum );

+		last = current;

+

+	}

+

+	this.cacheArcLengths = cache;

+

+	return cache; // { sums: cache, sum:sum }; Sum is in the last element.

+

+};

+

+

+THREE.Curve.prototype.updateArcLengths = function() {

+	this.needsUpdate = true;

+	this.getLengths();

+};

+

+// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equi distance

+

+THREE.Curve.prototype.getUtoTmapping = function ( u, distance ) {

+

+	var arcLengths = this.getLengths();

+

+	var i = 0, il = arcLengths.length;

+

+	var targetArcLength; // The targeted u distance value to get

+

+	if ( distance ) {

+

+		targetArcLength = distance;

+

+	} else {

+

+		targetArcLength = u * arcLengths[ il - 1 ];

+

+	}

+

+	//var time = Date.now();

+

+	// binary search for the index with largest value smaller than target u distance

+

+	var low = 0, high = il - 1, comparison;

+

+	while ( low <= high ) {

+

+		i = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats

+

+		comparison = arcLengths[ i ] - targetArcLength;

+

+		if ( comparison < 0 ) {

+

+			low = i + 1;

+			continue;

+

+		} else if ( comparison > 0 ) {

+

+			high = i - 1;

+			continue;

+

+		} else {

+

+			high = i;

+			break;

+

+			// DONE

+

+		}

+

+	}

+

+	i = high;

+

+	//console.log('b' , i, low, high, Date.now()- time);

+

+	if ( arcLengths[ i ] == targetArcLength ) {

+

+		var t = i / ( il - 1 );

+		return t;

+

+	}

+

+	// we could get finer grain at lengths, or use simple interpolatation between two points

+

+	var lengthBefore = arcLengths[ i ];

+    var lengthAfter = arcLengths[ i + 1 ];

+

+    var segmentLength = lengthAfter - lengthBefore;

+

+    // determine where we are between the 'before' and 'after' points

+

+    var segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;

+

+    // add that fractional amount to t

+

+    var t = ( i + segmentFraction ) / ( il -1 );

+

+	return t;

+

+};

+

+// Returns a unit vector tangent at t

+// In case any sub curve does not implement its tangent derivation,

+// 2 points a small delta apart will be used to find its gradient

+// which seems to give a reasonable approximation

+

+THREE.Curve.prototype.getTangent = function( t ) {

+

+	var delta = 0.0001;

+	var t1 = t - delta;

+	var t2 = t + delta;

+

+	// Capping in case of danger

+

+	if ( t1 < 0 ) t1 = 0;

+	if ( t2 > 1 ) t2 = 1;

+

+	var pt1 = this.getPoint( t1 );

+	var pt2 = this.getPoint( t2 );

+

+	var vec = pt2.clone().sub(pt1);

+	return vec.normalize();

+

+};

+

+

+THREE.Curve.prototype.getTangentAt = function ( u ) {

+

+	var t = this.getUtoTmapping( u );

+	return this.getTangent( t );

+

+};

+

+/**************************************************************

+ *	Line

+ **************************************************************/

+

+THREE.LineCurve = function ( v1, v2 ) {

+

+	this.v1 = v1;

+	this.v2 = v2;

+

+};

+

+THREE.LineCurve.prototype = Object.create( THREE.Curve.prototype );

+

+THREE.LineCurve.prototype.getPoint = function ( t ) {

+

+	var point = this.v2.clone().sub(this.v1);

+	point.multiplyScalar( t ).add( this.v1 );

+

+	return point;

+

+};

+

+// Line curve is linear, so we can overwrite default getPointAt

+

+THREE.LineCurve.prototype.getPointAt = function ( u ) {

+

+	return this.getPoint( u );

+

+};

+

+THREE.LineCurve.prototype.getTangent = function( t ) {

+

+	var tangent = this.v2.clone().sub(this.v1);

+

+	return tangent.normalize();

+

+};

+

+/**************************************************************

+ *	Quadratic Bezier curve

+ **************************************************************/

+

+

+THREE.QuadraticBezierCurve = function ( v0, v1, v2 ) {

+

+	this.v0 = v0;

+	this.v1 = v1;

+	this.v2 = v2;

+

+};

+

+THREE.QuadraticBezierCurve.prototype = Object.create( THREE.Curve.prototype );

+

+

+THREE.QuadraticBezierCurve.prototype.getPoint = function ( t ) {

+

+	var tx, ty;

+

+	tx = THREE.Shape.Utils.b2( t, this.v0.x, this.v1.x, this.v2.x );

+	ty = THREE.Shape.Utils.b2( t, this.v0.y, this.v1.y, this.v2.y );

+

+	return new THREE.Vector2( tx, ty );

+

+};

+

+

+THREE.QuadraticBezierCurve.prototype.getTangent = function( t ) {

+

+	var tx, ty;

+

+	tx = THREE.Curve.Utils.tangentQuadraticBezier( t, this.v0.x, this.v1.x, this.v2.x );

+	ty = THREE.Curve.Utils.tangentQuadraticBezier( t, this.v0.y, this.v1.y, this.v2.y );

+

+	// returns unit vector

+

+	var tangent = new THREE.Vector2( tx, ty );

+	tangent.normalize();

+

+	return tangent;

+

+};

+

+

+/**************************************************************

+ *	Cubic Bezier curve

+ **************************************************************/

+

+THREE.CubicBezierCurve = function ( v0, v1, v2, v3 ) {

+

+	this.v0 = v0;

+	this.v1 = v1;

+	this.v2 = v2;

+	this.v3 = v3;

+

+};

+

+THREE.CubicBezierCurve.prototype = Object.create( THREE.Curve.prototype );

+

+THREE.CubicBezierCurve.prototype.getPoint = function ( t ) {

+

+	var tx, ty;

+

+	tx = THREE.Shape.Utils.b3( t, this.v0.x, this.v1.x, this.v2.x, this.v3.x );

+	ty = THREE.Shape.Utils.b3( t, this.v0.y, this.v1.y, this.v2.y, this.v3.y );

+

+	return new THREE.Vector2( tx, ty );

+

+};

+

+THREE.CubicBezierCurve.prototype.getTangent = function( t ) {

+

+	var tx, ty;

+

+	tx = THREE.Curve.Utils.tangentCubicBezier( t, this.v0.x, this.v1.x, this.v2.x, this.v3.x );

+	ty = THREE.Curve.Utils.tangentCubicBezier( t, this.v0.y, this.v1.y, this.v2.y, this.v3.y );

+

+	var tangent = new THREE.Vector2( tx, ty );

+	tangent.normalize();

+

+	return tangent;

+

+};

+

+

+/**************************************************************

+ *	Spline curve

+ **************************************************************/

+

+THREE.SplineCurve = function ( points /* array of Vector2 */ ) {

+

+	this.points = (points == undefined) ? [] : points;

+

+};

+

+THREE.SplineCurve.prototype = Object.create( THREE.Curve.prototype );

+

+THREE.SplineCurve.prototype.getPoint = function ( t ) {

+

+	var v = new THREE.Vector2();

+	var c = [];

+	var points = this.points, point, intPoint, weight;

+	point = ( points.length - 1 ) * t;

+

+	intPoint = Math.floor( point );

+	weight = point - intPoint;

+

+	c[ 0 ] = intPoint == 0 ? intPoint : intPoint - 1;

+	c[ 1 ] = intPoint;

+	c[ 2 ] = intPoint  > points.length - 2 ? points.length -1 : intPoint + 1;

+	c[ 3 ] = intPoint  > points.length - 3 ? points.length -1 : intPoint + 2;

+

+	v.x = THREE.Curve.Utils.interpolate( points[ c[ 0 ] ].x, points[ c[ 1 ] ].x, points[ c[ 2 ] ].x, points[ c[ 3 ] ].x, weight );

+	v.y = THREE.Curve.Utils.interpolate( points[ c[ 0 ] ].y, points[ c[ 1 ] ].y, points[ c[ 2 ] ].y, points[ c[ 3 ] ].y, weight );

+

+	return v;

+

+};

+

+/**************************************************************

+ *	Ellipse curve

+ **************************************************************/

+

+THREE.EllipseCurve = function ( aX, aY, xRadius, yRadius,

+							aStartAngle, aEndAngle,

+							aClockwise ) {

+

+	this.aX = aX;

+	this.aY = aY;

+

+	this.xRadius = xRadius;

+	this.yRadius = yRadius;

+

+	this.aStartAngle = aStartAngle;

+	this.aEndAngle = aEndAngle;

+

+	this.aClockwise = aClockwise;

+

+};

+

+THREE.EllipseCurve.prototype = Object.create( THREE.Curve.prototype );

+

+THREE.EllipseCurve.prototype.getPoint = function ( t ) {

+

+	var deltaAngle = this.aEndAngle - this.aStartAngle;

+

+	if ( !this.aClockwise ) {

+

+		t = 1 - t;

+

+	}

+

+	var angle = this.aStartAngle + t * deltaAngle;

+

+	var tx = this.aX + this.xRadius * Math.cos( angle );

+	var ty = this.aY + this.yRadius * Math.sin( angle );

+

+	return new THREE.Vector2( tx, ty );

+

+};

+

+/**************************************************************

+ *	Arc curve

+ **************************************************************/

+

+THREE.ArcCurve = function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

+

+	THREE.EllipseCurve.call( this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

+};

+

+THREE.ArcCurve.prototype = Object.create( THREE.EllipseCurve.prototype );

+

+

+/**************************************************************

+ *	Utils

+ **************************************************************/

+

+THREE.Curve.Utils = {

+

+	tangentQuadraticBezier: function ( t, p0, p1, p2 ) {

+

+		return 2 * ( 1 - t ) * ( p1 - p0 ) + 2 * t * ( p2 - p1 );

+

+	},

+

+	// Puay Bing, thanks for helping with this derivative!

+

+	tangentCubicBezier: function (t, p0, p1, p2, p3 ) {

+

+		return -3 * p0 * (1 - t) * (1 - t)  +

+			3 * p1 * (1 - t) * (1-t) - 6 *t *p1 * (1-t) +

+			6 * t *  p2 * (1-t) - 3 * t * t * p2 +

+			3 * t * t * p3;

+	},

+

+

+	tangentSpline: function ( t, p0, p1, p2, p3 ) {

+

+		// To check if my formulas are correct

+

+		var h00 = 6 * t * t - 6 * t; 	// derived from 2t^3 − 3t^2 + 1

+		var h10 = 3 * t * t - 4 * t + 1; // t^3 − 2t^2 + t

+		var h01 = -6 * t * t + 6 * t; 	// − 2t3 + 3t2

+		var h11 = 3 * t * t - 2 * t;	// t3 − t2

+

+		return h00 + h10 + h01 + h11;

+

+	},

+

+	// Catmull-Rom

+

+	interpolate: function( p0, p1, p2, p3, t ) {

+

+		var v0 = ( p2 - p0 ) * 0.5;

+		var v1 = ( p3 - p1 ) * 0.5;

+		var t2 = t * t;

+		var t3 = t * t2;

+		return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;

+

+	}

+

+};

+

+

+// TODO: Transformation for Curves?

+

+/**************************************************************

+ *	3D Curves

+ **************************************************************/

+

+// A Factory method for creating new curve subclasses

+

+THREE.Curve.create = function ( constructor, getPointFunc ) {

+

+	constructor.prototype = Object.create( THREE.Curve.prototype );

+	constructor.prototype.getPoint = getPointFunc;

+

+	return constructor;

+

+};

+

+

+/**************************************************************

+ *	Line3D

+ **************************************************************/

+

+THREE.LineCurve3 = THREE.Curve.create(

+

+	function ( v1, v2 ) {

+

+		this.v1 = v1;

+		this.v2 = v2;

+

+	},

+

+	function ( t ) {

+

+		var r = new THREE.Vector3();

+

+

+		r.subVectors( this.v2, this.v1 ); // diff

+		r.multiplyScalar( t );

+		r.add( this.v1 );

+

+		return r;

+

+	}

+

+);

+

+

+/**************************************************************

+ *	Quadratic Bezier 3D curve

+ **************************************************************/

+

+THREE.QuadraticBezierCurve3 = THREE.Curve.create(

+

+	function ( v0, v1, v2 ) {

+

+		this.v0 = v0;

+		this.v1 = v1;

+		this.v2 = v2;

+

+	},

+

+	function ( t ) {

+

+		var tx, ty, tz;

+

+		tx = THREE.Shape.Utils.b2( t, this.v0.x, this.v1.x, this.v2.x );

+		ty = THREE.Shape.Utils.b2( t, this.v0.y, this.v1.y, this.v2.y );

+		tz = THREE.Shape.Utils.b2( t, this.v0.z, this.v1.z, this.v2.z );

+

+		return new THREE.Vector3( tx, ty, tz );

+

+	}

+

+);

+

+

+

+/**************************************************************

+ *	Cubic Bezier 3D curve

+ **************************************************************/

+

+THREE.CubicBezierCurve3 = THREE.Curve.create(

+

+	function ( v0, v1, v2, v3 ) {

+

+		this.v0 = v0;

+		this.v1 = v1;

+		this.v2 = v2;

+		this.v3 = v3;

+

+	},

+

+	function ( t ) {

+

+		var tx, ty, tz;

+

+		tx = THREE.Shape.Utils.b3( t, this.v0.x, this.v1.x, this.v2.x, this.v3.x );

+		ty = THREE.Shape.Utils.b3( t, this.v0.y, this.v1.y, this.v2.y, this.v3.y );

+		tz = THREE.Shape.Utils.b3( t, this.v0.z, this.v1.z, this.v2.z, this.v3.z );

+

+		return new THREE.Vector3( tx, ty, tz );

+

+	}

+

+);

+

+

+

+/**************************************************************

+ *	Spline 3D curve

+ **************************************************************/

+

+

+THREE.SplineCurve3 = THREE.Curve.create(

+

+	function ( points /* array of Vector3 */) {

+

+		this.points = (points == undefined) ? [] : points;

+

+	},

+

+	function ( t ) {

+

+		var v = new THREE.Vector3();

+		var c = [];

+		var points = this.points, point, intPoint, weight;

+		point = ( points.length - 1 ) * t;

+

+		intPoint = Math.floor( point );

+		weight = point - intPoint;

+

+		c[ 0 ] = intPoint == 0 ? intPoint : intPoint - 1;

+		c[ 1 ] = intPoint;

+		c[ 2 ] = intPoint  > points.length - 2 ? points.length - 1 : intPoint + 1;

+		c[ 3 ] = intPoint  > points.length - 3 ? points.length - 1 : intPoint + 2;

+

+		var pt0 = points[ c[0] ],

+			pt1 = points[ c[1] ],

+			pt2 = points[ c[2] ],

+			pt3 = points[ c[3] ];

+

+		v.x = THREE.Curve.Utils.interpolate(pt0.x, pt1.x, pt2.x, pt3.x, weight);

+		v.y = THREE.Curve.Utils.interpolate(pt0.y, pt1.y, pt2.y, pt3.y, weight);

+		v.z = THREE.Curve.Utils.interpolate(pt0.z, pt1.z, pt2.z, pt3.z, weight);

+

+		return v;

+

+	}

+

+);

+

+

+// THREE.SplineCurve3.prototype.getTangent = function(t) {

+// 		var v = new THREE.Vector3();

+// 		var c = [];

+// 		var points = this.points, point, intPoint, weight;

+// 		point = ( points.length - 1 ) * t;

+

+// 		intPoint = Math.floor( point );

+// 		weight = point - intPoint;

+

+// 		c[ 0 ] = intPoint == 0 ? intPoint : intPoint - 1;

+// 		c[ 1 ] = intPoint;

+// 		c[ 2 ] = intPoint  > points.length - 2 ? points.length - 1 : intPoint + 1;

+// 		c[ 3 ] = intPoint  > points.length - 3 ? points.length - 1 : intPoint + 2;

+

+// 		var pt0 = points[ c[0] ],

+// 			pt1 = points[ c[1] ],

+// 			pt2 = points[ c[2] ],

+// 			pt3 = points[ c[3] ];

+

+// 	// t = weight;

+// 	v.x = THREE.Curve.Utils.tangentSpline( t, pt0.x, pt1.x, pt2.x, pt3.x );

+// 	v.y = THREE.Curve.Utils.tangentSpline( t, pt0.y, pt1.y, pt2.y, pt3.y );

+// 	v.z = THREE.Curve.Utils.tangentSpline( t, pt0.z, pt1.z, pt2.z, pt3.z );

+

+// 	return v;

+

+// }

+

+/**************************************************************

+ *	Closed Spline 3D curve

+ **************************************************************/

+

+

+THREE.ClosedSplineCurve3 = THREE.Curve.create(

+

+	function ( points /* array of Vector3 */) {

+

+		this.points = (points == undefined) ? [] : points;

+

+	},

+

+    function ( t ) {

+

+        var v = new THREE.Vector3();

+        var c = [];

+        var points = this.points, point, intPoint, weight;

+        point = ( points.length - 0 ) * t;

+            // This needs to be from 0-length +1

+

+        intPoint = Math.floor( point );

+        weight = point - intPoint;

+

+        intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / points.length ) + 1 ) * points.length;

+        c[ 0 ] = ( intPoint - 1 ) % points.length;

+        c[ 1 ] = ( intPoint ) % points.length;

+        c[ 2 ] = ( intPoint + 1 ) % points.length;

+        c[ 3 ] = ( intPoint + 2 ) % points.length;

+

+        v.x = THREE.Curve.Utils.interpolate( points[ c[ 0 ] ].x, points[ c[ 1 ] ].x, points[ c[ 2 ] ].x, points[ c[ 3 ] ].x, weight );

+        v.y = THREE.Curve.Utils.interpolate( points[ c[ 0 ] ].y, points[ c[ 1 ] ].y, points[ c[ 2 ] ].y, points[ c[ 3 ] ].y, weight );

+        v.z = THREE.Curve.Utils.interpolate( points[ c[ 0 ] ].z, points[ c[ 1 ] ].z, points[ c[ 2 ] ].z, points[ c[ 3 ] ].z, weight );

+

+        return v;

+

+    }

+

+);

+/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ *

+ **/

+

+/**************************************************************

+ *	Curved Path - a curve path is simply a array of connected

+ *  curves, but retains the api of a curve

+ **************************************************************/

+

+THREE.CurvePath = function () {

+

+	this.curves = [];

+	this.bends = [];

+	

+	this.autoClose = false; // Automatically closes the path

+};

+

+THREE.CurvePath.prototype = Object.create( THREE.Curve.prototype );

+

+THREE.CurvePath.prototype.add = function ( curve ) {

+

+	this.curves.push( curve );

+

+};

+

+THREE.CurvePath.prototype.checkConnection = function() {

+	// TODO

+	// If the ending of curve is not connected to the starting

+	// or the next curve, then, this is not a real path

+};

+

+THREE.CurvePath.prototype.closePath = function() {

+	// TODO Test

+	// and verify for vector3 (needs to implement equals)

+	// Add a line curve if start and end of lines are not connected

+	var startPoint = this.curves[0].getPoint(0);

+	var endPoint = this.curves[this.curves.length-1].getPoint(1);

+	

+	if (!startPoint.equals(endPoint)) {

+		this.curves.push( new THREE.LineCurve(endPoint, startPoint) );

+	}

+	

+};

+

+// To get accurate point with reference to

+// entire path distance at time t,

+// following has to be done:

+

+// 1. Length of each sub path have to be known

+// 2. Locate and identify type of curve

+// 3. Get t for the curve

+// 4. Return curve.getPointAt(t')

+

+THREE.CurvePath.prototype.getPoint = function( t ) {

+

+	var d = t * this.getLength();

+	var curveLengths = this.getCurveLengths();

+	var i = 0, diff, curve;

+

+	// To think about boundaries points.

+

+	while ( i < curveLengths.length ) {

+

+		if ( curveLengths[ i ] >= d ) {

+

+			diff = curveLengths[ i ] - d;

+			curve = this.curves[ i ];

+

+			var u = 1 - diff / curve.getLength();

+

+			return curve.getPointAt( u );

+

+			break;

+		}

+

+		i ++;

+

+	}

+

+	return null;

+

+	// loop where sum != 0, sum > d , sum+1 <d

+

+};

+

+/*

+THREE.CurvePath.prototype.getTangent = function( t ) {

+};*/

+

+

+// We cannot use the default THREE.Curve getPoint() with getLength() because in

+// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath

+// getPoint() depends on getLength

+

+THREE.CurvePath.prototype.getLength = function() {

+

+	var lens = this.getCurveLengths();

+	return lens[ lens.length - 1 ];

+

+};

+

+// Compute lengths and cache them

+// We cannot overwrite getLengths() because UtoT mapping uses it.

+

+THREE.CurvePath.prototype.getCurveLengths = function() {

+

+	// We use cache values if curves and cache array are same length

+

+	if ( this.cacheLengths && this.cacheLengths.length == this.curves.length ) {

+

+		return this.cacheLengths;

+

+	};

+

+	// Get length of subsurve

+	// Push sums into cached array

+

+	var lengths = [], sums = 0;

+	var i, il = this.curves.length;

+

+	for ( i = 0; i < il; i ++ ) {

+

+		sums += this.curves[ i ].getLength();

+		lengths.push( sums );

+

+	}

+

+	this.cacheLengths = lengths;

+

+	return lengths;

+

+};

+

+

+

+// Returns min and max coordinates, as well as centroid

+

+THREE.CurvePath.prototype.getBoundingBox = function () {

+

+	var points = this.getPoints();

+

+	var maxX, maxY, maxZ;

+	var minX, minY, minZ;

+

+	maxX = maxY = Number.NEGATIVE_INFINITY;

+	minX = minY = Number.POSITIVE_INFINITY;

+

+	var p, i, il, sum;

+

+	var v3 = points[0] instanceof THREE.Vector3;

+

+	sum = v3 ? new THREE.Vector3() : new THREE.Vector2();

+

+	for ( i = 0, il = points.length; i < il; i ++ ) {

+

+		p = points[ i ];

+

+		if ( p.x > maxX ) maxX = p.x;

+		else if ( p.x < minX ) minX = p.x;

+

+		if ( p.y > maxY ) maxY = p.y;

+		else if ( p.y < minY ) minY = p.y;

+

+		if ( v3 ) {

+

+			if ( p.z > maxZ ) maxZ = p.z;

+			else if ( p.z < minZ ) minZ = p.z;

+

+		}

+

+		sum.add( p );

+

+	}

+

+	var ret = {

+

+		minX: minX,

+		minY: minY,

+		maxX: maxX,

+		maxY: maxY,

+		centroid: sum.divideScalar( il )

+

+	};

+

+	if ( v3 ) {

+

+		ret.maxZ = maxZ;

+		ret.minZ = minZ;

+

+	}

+

+	return ret;

+

+};

+

+/**************************************************************

+ *	Create Geometries Helpers

+ **************************************************************/

+

+/// Generate geometry from path points (for Line or ParticleSystem objects)

+

+THREE.CurvePath.prototype.createPointsGeometry = function( divisions ) {

+

+	var pts = this.getPoints( divisions, true );

+	return this.createGeometry( pts );

+

+};

+

+// Generate geometry from equidistance sampling along the path

+

+THREE.CurvePath.prototype.createSpacedPointsGeometry = function( divisions ) {

+

+	var pts = this.getSpacedPoints( divisions, true );

+	return this.createGeometry( pts );

+

+};

+

+THREE.CurvePath.prototype.createGeometry = function( points ) {

+

+	var geometry = new THREE.Geometry();

+

+	for ( var i = 0; i < points.length; i ++ ) {

+

+		geometry.vertices.push( new THREE.Vector3( points[ i ].x, points[ i ].y, points[ i ].z || 0) );

+

+	}

+

+	return geometry;

+

+};

+

+

+/**************************************************************

+ *	Bend / Wrap Helper Methods

+ **************************************************************/

+

+// Wrap path / Bend modifiers?

+

+THREE.CurvePath.prototype.addWrapPath = function ( bendpath ) {

+

+	this.bends.push( bendpath );

+

+};

+

+THREE.CurvePath.prototype.getTransformedPoints = function( segments, bends ) {

+

+	var oldPts = this.getPoints( segments ); // getPoints getSpacedPoints

+	var i, il;

+

+	if ( !bends ) {

+

+		bends = this.bends;

+

+	}

+

+	for ( i = 0, il = bends.length; i < il; i ++ ) {

+

+		oldPts = this.getWrapPoints( oldPts, bends[ i ] );

+

+	}

+

+	return oldPts;

+

+};

+

+THREE.CurvePath.prototype.getTransformedSpacedPoints = function( segments, bends ) {

+

+	var oldPts = this.getSpacedPoints( segments );

+

+	var i, il;

+

+	if ( !bends ) {

+

+		bends = this.bends;

+

+	}

+

+	for ( i = 0, il = bends.length; i < il; i ++ ) {

+

+		oldPts = this.getWrapPoints( oldPts, bends[ i ] );

+

+	}

+

+	return oldPts;

+

+};

+

+// This returns getPoints() bend/wrapped around the contour of a path.

+// Read http://www.planetclegg.com/projects/WarpingTextToSplines.html

+

+THREE.CurvePath.prototype.getWrapPoints = function ( oldPts, path ) {

+

+	var bounds = this.getBoundingBox();

+

+	var i, il, p, oldX, oldY, xNorm;

+

+	for ( i = 0, il = oldPts.length; i < il; i ++ ) {

+

+		p = oldPts[ i ];

+

+		oldX = p.x;

+		oldY = p.y;

+

+		xNorm = oldX / bounds.maxX;

+

+		// If using actual distance, for length > path, requires line extrusions

+		//xNorm = path.getUtoTmapping(xNorm, oldX); // 3 styles. 1) wrap stretched. 2) wrap stretch by arc length 3) warp by actual distance

+

+		xNorm = path.getUtoTmapping( xNorm, oldX );

+

+		// check for out of bounds?

+

+		var pathPt = path.getPoint( xNorm );

+		var normal = path.getNormalVector( xNorm ).multiplyScalar( oldY );

+

+		p.x = pathPt.x + normal.x;

+		p.y = pathPt.y + normal.y;

+

+	}

+

+	return oldPts;

+

+};

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Gyroscope = function () {

+

+	THREE.Object3D.call( this );

+

+};

+

+THREE.Gyroscope.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.Gyroscope.prototype.updateMatrixWorld = function ( force ) {

+

+	this.matrixAutoUpdate && this.updateMatrix();

+

+	// update matrixWorld

+

+	if ( this.matrixWorldNeedsUpdate || force ) {

+

+		if ( this.parent ) {

+

+			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

+

+			this.matrixWorld.decompose( this.translationWorld, this.rotationWorld, this.scaleWorld );

+			this.matrix.decompose( this.translationObject, this.rotationObject, this.scaleObject );

+

+			this.matrixWorld.compose( this.translationWorld, this.rotationObject, this.scaleWorld );

+

+

+		} else {

+

+			this.matrixWorld.copy( this.matrix );

+

+		}

+

+

+		this.matrixWorldNeedsUpdate = false;

+

+		force = true;

+

+	}

+

+	// update children

+

+	for ( var i = 0, l = this.children.length; i < l; i ++ ) {

+

+		this.children[ i ].updateMatrixWorld( force );

+

+	}

+

+};

+

+THREE.Gyroscope.prototype.translationWorld = new THREE.Vector3();

+THREE.Gyroscope.prototype.translationObject = new THREE.Vector3();

+THREE.Gyroscope.prototype.rotationWorld = new THREE.Quaternion();

+THREE.Gyroscope.prototype.rotationObject = new THREE.Quaternion();

+THREE.Gyroscope.prototype.scaleWorld = new THREE.Vector3();

+THREE.Gyroscope.prototype.scaleObject = new THREE.Vector3();

+

+/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ * Creates free form 2d path using series of points, lines or curves.

+ *

+ **/

+

+THREE.Path = function ( points ) {

+

+	THREE.CurvePath.call(this);

+

+	this.actions = [];

+

+	if ( points ) {

+

+		this.fromPoints( points );

+

+	}

+

+};

+

+THREE.Path.prototype = Object.create( THREE.CurvePath.prototype );

+

+THREE.PathActions = {

+

+	MOVE_TO: 'moveTo',

+	LINE_TO: 'lineTo',

+	QUADRATIC_CURVE_TO: 'quadraticCurveTo', // Bezier quadratic curve

+	BEZIER_CURVE_TO: 'bezierCurveTo', 		// Bezier cubic curve

+	CSPLINE_THRU: 'splineThru',				// Catmull-rom spline

+	ARC: 'arc',								// Circle

+	ELLIPSE: 'ellipse'

+};

+

+// TODO Clean up PATH API

+

+// Create path using straight lines to connect all points

+// - vectors: array of Vector2

+

+THREE.Path.prototype.fromPoints = function ( vectors ) {

+

+	this.moveTo( vectors[ 0 ].x, vectors[ 0 ].y );

+

+	for ( var v = 1, vlen = vectors.length; v < vlen; v ++ ) {

+

+		this.lineTo( vectors[ v ].x, vectors[ v ].y );

+

+	};

+

+};

+

+// startPath() endPath()?

+

+THREE.Path.prototype.moveTo = function ( x, y ) {

+

+	var args = Array.prototype.slice.call( arguments );

+	this.actions.push( { action: THREE.PathActions.MOVE_TO, args: args } );

+

+};

+

+THREE.Path.prototype.lineTo = function ( x, y ) {

+

+	var args = Array.prototype.slice.call( arguments );

+

+	var lastargs = this.actions[ this.actions.length - 1 ].args;

+

+	var x0 = lastargs[ lastargs.length - 2 ];

+	var y0 = lastargs[ lastargs.length - 1 ];

+

+	var curve = new THREE.LineCurve( new THREE.Vector2( x0, y0 ), new THREE.Vector2( x, y ) );

+	this.curves.push( curve );

+

+	this.actions.push( { action: THREE.PathActions.LINE_TO, args: args } );

+

+};

+

+THREE.Path.prototype.quadraticCurveTo = function( aCPx, aCPy, aX, aY ) {

+

+	var args = Array.prototype.slice.call( arguments );

+

+	var lastargs = this.actions[ this.actions.length - 1 ].args;

+

+	var x0 = lastargs[ lastargs.length - 2 ];

+	var y0 = lastargs[ lastargs.length - 1 ];

+

+	var curve = new THREE.QuadraticBezierCurve( new THREE.Vector2( x0, y0 ),

+												new THREE.Vector2( aCPx, aCPy ),

+												new THREE.Vector2( aX, aY ) );

+	this.curves.push( curve );

+

+	this.actions.push( { action: THREE.PathActions.QUADRATIC_CURVE_TO, args: args } );

+

+};

+

+THREE.Path.prototype.bezierCurveTo = function( aCP1x, aCP1y,

+                                               aCP2x, aCP2y,

+                                               aX, aY ) {

+

+	var args = Array.prototype.slice.call( arguments );

+

+	var lastargs = this.actions[ this.actions.length - 1 ].args;

+

+	var x0 = lastargs[ lastargs.length - 2 ];

+	var y0 = lastargs[ lastargs.length - 1 ];

+

+	var curve = new THREE.CubicBezierCurve( new THREE.Vector2( x0, y0 ),

+											new THREE.Vector2( aCP1x, aCP1y ),

+											new THREE.Vector2( aCP2x, aCP2y ),

+											new THREE.Vector2( aX, aY ) );

+	this.curves.push( curve );

+

+	this.actions.push( { action: THREE.PathActions.BEZIER_CURVE_TO, args: args } );

+

+};

+

+THREE.Path.prototype.splineThru = function( pts /*Array of Vector*/ ) {

+

+	var args = Array.prototype.slice.call( arguments );

+	var lastargs = this.actions[ this.actions.length - 1 ].args;

+

+	var x0 = lastargs[ lastargs.length - 2 ];

+	var y0 = lastargs[ lastargs.length - 1 ];

+//---

+	var npts = [ new THREE.Vector2( x0, y0 ) ];

+	Array.prototype.push.apply( npts, pts );

+

+	var curve = new THREE.SplineCurve( npts );

+	this.curves.push( curve );

+

+	this.actions.push( { action: THREE.PathActions.CSPLINE_THRU, args: args } );

+

+};

+

+// FUTURE: Change the API or follow canvas API?

+

+THREE.Path.prototype.arc = function ( aX, aY, aRadius,

+									  aStartAngle, aEndAngle, aClockwise ) {

+

+	var lastargs = this.actions[ this.actions.length - 1].args;

+	var x0 = lastargs[ lastargs.length - 2 ];

+	var y0 = lastargs[ lastargs.length - 1 ];

+

+	this.absarc(aX + x0, aY + y0, aRadius,

+		aStartAngle, aEndAngle, aClockwise );

+	

+ };

+

+ THREE.Path.prototype.absarc = function ( aX, aY, aRadius,

+									  aStartAngle, aEndAngle, aClockwise ) {

+	this.absellipse(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);

+ };

+ 

+THREE.Path.prototype.ellipse = function ( aX, aY, xRadius, yRadius,

+									  aStartAngle, aEndAngle, aClockwise ) {

+

+	var lastargs = this.actions[ this.actions.length - 1].args;

+	var x0 = lastargs[ lastargs.length - 2 ];

+	var y0 = lastargs[ lastargs.length - 1 ];

+

+	this.absellipse(aX + x0, aY + y0, xRadius, yRadius,

+		aStartAngle, aEndAngle, aClockwise );

+

+ };

+ 

+

+THREE.Path.prototype.absellipse = function ( aX, aY, xRadius, yRadius,

+									  aStartAngle, aEndAngle, aClockwise ) {

+

+	var args = Array.prototype.slice.call( arguments );

+	var curve = new THREE.EllipseCurve( aX, aY, xRadius, yRadius,

+									aStartAngle, aEndAngle, aClockwise );

+	this.curves.push( curve );

+

+	var lastPoint = curve.getPoint(aClockwise ? 1 : 0);

+	args.push(lastPoint.x);

+	args.push(lastPoint.y);

+

+	this.actions.push( { action: THREE.PathActions.ELLIPSE, args: args } );

+

+ };

+

+THREE.Path.prototype.getSpacedPoints = function ( divisions, closedPath ) {

+

+	if ( ! divisions ) divisions = 40;

+

+	var points = [];

+

+	for ( var i = 0; i < divisions; i ++ ) {

+

+		points.push( this.getPoint( i / divisions ) );

+

+		//if( !this.getPoint( i / divisions ) ) throw "DIE";

+

+	}

+

+	// if ( closedPath ) {

+	//

+	// 	points.push( points[ 0 ] );

+	//

+	// }

+

+	return points;

+

+};

+

+/* Return an array of vectors based on contour of the path */

+

+THREE.Path.prototype.getPoints = function( divisions, closedPath ) {

+

+	if (this.useSpacedPoints) {

+		console.log('tata');

+		return this.getSpacedPoints( divisions, closedPath );

+	}

+

+	divisions = divisions || 12;

+

+	var points = [];

+

+	var i, il, item, action, args;

+	var cpx, cpy, cpx2, cpy2, cpx1, cpy1, cpx0, cpy0,

+		laste, j,

+		t, tx, ty;

+

+	for ( i = 0, il = this.actions.length; i < il; i ++ ) {

+

+		item = this.actions[ i ];

+

+		action = item.action;

+		args = item.args;

+

+		switch( action ) {

+

+		case THREE.PathActions.MOVE_TO:

+

+			points.push( new THREE.Vector2( args[ 0 ], args[ 1 ] ) );

+

+			break;

+

+		case THREE.PathActions.LINE_TO:

+

+			points.push( new THREE.Vector2( args[ 0 ], args[ 1 ] ) );

+

+			break;

+

+		case THREE.PathActions.QUADRATIC_CURVE_TO:

+

+			cpx  = args[ 2 ];

+			cpy  = args[ 3 ];

+

+			cpx1 = args[ 0 ];

+			cpy1 = args[ 1 ];

+

+			if ( points.length > 0 ) {

+

+				laste = points[ points.length - 1 ];

+

+				cpx0 = laste.x;

+				cpy0 = laste.y;

+

+			} else {

+

+				laste = this.actions[ i - 1 ].args;

+

+				cpx0 = laste[ laste.length - 2 ];

+				cpy0 = laste[ laste.length - 1 ];

+

+			}

+

+			for ( j = 1; j <= divisions; j ++ ) {

+

+				t = j / divisions;

+

+				tx = THREE.Shape.Utils.b2( t, cpx0, cpx1, cpx );

+				ty = THREE.Shape.Utils.b2( t, cpy0, cpy1, cpy );

+

+				points.push( new THREE.Vector2( tx, ty ) );

+

+		  	}

+

+			break;

+

+		case THREE.PathActions.BEZIER_CURVE_TO:

+

+			cpx  = args[ 4 ];

+			cpy  = args[ 5 ];

+

+			cpx1 = args[ 0 ];

+			cpy1 = args[ 1 ];

+

+			cpx2 = args[ 2 ];

+			cpy2 = args[ 3 ];

+

+			if ( points.length > 0 ) {

+

+				laste = points[ points.length - 1 ];

+

+				cpx0 = laste.x;

+				cpy0 = laste.y;

+

+			} else {

+

+				laste = this.actions[ i - 1 ].args;

+

+				cpx0 = laste[ laste.length - 2 ];

+				cpy0 = laste[ laste.length - 1 ];

+

+			}

+

+

+			for ( j = 1; j <= divisions; j ++ ) {

+

+				t = j / divisions;

+

+				tx = THREE.Shape.Utils.b3( t, cpx0, cpx1, cpx2, cpx );

+				ty = THREE.Shape.Utils.b3( t, cpy0, cpy1, cpy2, cpy );

+

+				points.push( new THREE.Vector2( tx, ty ) );

+

+			}

+

+			break;

+

+		case THREE.PathActions.CSPLINE_THRU:

+

+			laste = this.actions[ i - 1 ].args;

+

+			var last = new THREE.Vector2( laste[ laste.length - 2 ], laste[ laste.length - 1 ] );

+			var spts = [ last ];

+

+			var n = divisions * args[ 0 ].length;

+

+			spts = spts.concat( args[ 0 ] );

+

+			var spline = new THREE.SplineCurve( spts );

+

+			for ( j = 1; j <= n; j ++ ) {

+

+				points.push( spline.getPointAt( j / n ) ) ;

+

+			}

+

+			break;

+

+		case THREE.PathActions.ARC:

+

+			var aX = args[ 0 ], aY = args[ 1 ],

+				aRadius = args[ 2 ],

+				aStartAngle = args[ 3 ], aEndAngle = args[ 4 ],

+				aClockwise = !!args[ 5 ];

+

+			var deltaAngle = aEndAngle - aStartAngle;

+			var angle;

+			var tdivisions = divisions * 2;

+

+			for ( j = 1; j <= tdivisions; j ++ ) {

+

+				t = j / tdivisions;

+

+				if ( ! aClockwise ) {

+

+					t = 1 - t;

+

+				}

+

+				angle = aStartAngle + t * deltaAngle;

+

+				tx = aX + aRadius * Math.cos( angle );

+				ty = aY + aRadius * Math.sin( angle );

+

+				//console.log('t', t, 'angle', angle, 'tx', tx, 'ty', ty);

+

+				points.push( new THREE.Vector2( tx, ty ) );

+

+			}

+

+			//console.log(points);

+

+		  break;

+		  

+		case THREE.PathActions.ELLIPSE:

+

+			var aX = args[ 0 ], aY = args[ 1 ],

+				xRadius = args[ 2 ],

+				yRadius = args[ 3 ],

+				aStartAngle = args[ 4 ], aEndAngle = args[ 5 ],

+				aClockwise = !!args[ 6 ];

+

+

+			var deltaAngle = aEndAngle - aStartAngle;

+			var angle;

+			var tdivisions = divisions * 2;

+

+			for ( j = 1; j <= tdivisions; j ++ ) {

+

+				t = j / tdivisions;

+

+				if ( ! aClockwise ) {

+

+					t = 1 - t;

+

+				}

+

+				angle = aStartAngle + t * deltaAngle;

+

+				tx = aX + xRadius * Math.cos( angle );

+				ty = aY + yRadius * Math.sin( angle );

+

+				//console.log('t', t, 'angle', angle, 'tx', tx, 'ty', ty);

+

+				points.push( new THREE.Vector2( tx, ty ) );

+

+			}

+

+			//console.log(points);

+

+		  break;

+

+		} // end switch

+

+	}

+

+

+

+	// Normalize to remove the closing point by default.

+	var lastPoint = points[ points.length - 1];

+	var EPSILON = 0.0000000001;

+	if ( Math.abs(lastPoint.x - points[ 0 ].x) < EPSILON &&

+             Math.abs(lastPoint.y - points[ 0 ].y) < EPSILON)

+		points.splice( points.length - 1, 1);

+	if ( closedPath ) {

+

+		points.push( points[ 0 ] );

+

+	}

+

+	return points;

+

+};

+

+// Breaks path into shapes

+

+THREE.Path.prototype.toShapes = function() {

+

+	var i, il, item, action, args;

+

+	var subPaths = [], lastPath = new THREE.Path();

+

+	for ( i = 0, il = this.actions.length; i < il; i ++ ) {

+

+		item = this.actions[ i ];

+

+		args = item.args;

+		action = item.action;

+

+		if ( action == THREE.PathActions.MOVE_TO ) {

+

+			if ( lastPath.actions.length != 0 ) {

+

+				subPaths.push( lastPath );

+				lastPath = new THREE.Path();

+

+			}

+

+		}

+

+		lastPath[ action ].apply( lastPath, args );

+

+	}

+

+	if ( lastPath.actions.length != 0 ) {

+

+		subPaths.push( lastPath );

+

+	}

+

+	// console.log(subPaths);

+

+	if ( subPaths.length == 0 ) return [];

+

+	var tmpPath, tmpShape, shapes = [];

+

+	var holesFirst = !THREE.Shape.Utils.isClockWise( subPaths[ 0 ].getPoints() );

+	// console.log("Holes first", holesFirst);

+

+	if ( subPaths.length == 1) {

+		tmpPath = subPaths[0];

+		tmpShape = new THREE.Shape();

+		tmpShape.actions = tmpPath.actions;

+		tmpShape.curves = tmpPath.curves;

+		shapes.push( tmpShape );

+		return shapes;

+	};

+

+	if ( holesFirst ) {

+

+		tmpShape = new THREE.Shape();

+

+		for ( i = 0, il = subPaths.length; i < il; i ++ ) {

+

+			tmpPath = subPaths[ i ];

+

+			if ( THREE.Shape.Utils.isClockWise( tmpPath.getPoints() ) ) {

+

+				tmpShape.actions = tmpPath.actions;

+				tmpShape.curves = tmpPath.curves;

+

+				shapes.push( tmpShape );

+				tmpShape = new THREE.Shape();

+

+				//console.log('cw', i);

+

+			} else {

+

+				tmpShape.holes.push( tmpPath );

+

+				//console.log('ccw', i);

+

+			}

+

+		}

+

+	} else {

+

+		// Shapes first

+

+		for ( i = 0, il = subPaths.length; i < il; i ++ ) {

+

+			tmpPath = subPaths[ i ];

+

+			if ( THREE.Shape.Utils.isClockWise( tmpPath.getPoints() ) ) {

+

+

+				if ( tmpShape ) shapes.push( tmpShape );

+

+				tmpShape = new THREE.Shape();

+				tmpShape.actions = tmpPath.actions;

+				tmpShape.curves = tmpPath.curves;

+

+			} else {

+

+				tmpShape.holes.push( tmpPath );

+

+			}

+

+		}

+

+		shapes.push( tmpShape );

+

+	}

+

+	//console.log("shape", shapes);

+

+	return shapes;

+

+};

+/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ * Defines a 2d shape plane using paths.

+ **/

+

+// STEP 1 Create a path.

+// STEP 2 Turn path into shape.

+// STEP 3 ExtrudeGeometry takes in Shape/Shapes

+// STEP 3a - Extract points from each shape, turn to vertices

+// STEP 3b - Triangulate each shape, add faces.

+

+THREE.Shape = function () {

+

+	THREE.Path.apply( this, arguments );

+	this.holes = [];

+

+};

+

+THREE.Shape.prototype = Object.create( THREE.Path.prototype );

+

+// Convenience method to return ExtrudeGeometry

+

+THREE.Shape.prototype.extrude = function ( options ) {

+

+	var extruded = new THREE.ExtrudeGeometry( this, options );

+	return extruded;

+

+};

+

+// Convenience method to return ShapeGeometry

+

+THREE.Shape.prototype.makeGeometry = function ( options ) {

+

+	var geometry = new THREE.ShapeGeometry( this, options );

+	return geometry;

+

+};

+

+// Get points of holes

+

+THREE.Shape.prototype.getPointsHoles = function ( divisions ) {

+

+	var i, il = this.holes.length, holesPts = [];

+

+	for ( i = 0; i < il; i ++ ) {

+

+		holesPts[ i ] = this.holes[ i ].getTransformedPoints( divisions, this.bends );

+

+	}

+

+	return holesPts;

+

+};

+

+// Get points of holes (spaced by regular distance)

+

+THREE.Shape.prototype.getSpacedPointsHoles = function ( divisions ) {

+

+	var i, il = this.holes.length, holesPts = [];

+

+	for ( i = 0; i < il; i ++ ) {

+

+		holesPts[ i ] = this.holes[ i ].getTransformedSpacedPoints( divisions, this.bends );

+

+	}

+

+	return holesPts;

+

+};

+

+

+// Get points of shape and holes (keypoints based on segments parameter)

+

+THREE.Shape.prototype.extractAllPoints = function ( divisions ) {

+

+	return {

+

+		shape: this.getTransformedPoints( divisions ),

+		holes: this.getPointsHoles( divisions )

+

+	};

+

+};

+

+THREE.Shape.prototype.extractPoints = function ( divisions ) {

+

+	if (this.useSpacedPoints) {

+		return this.extractAllSpacedPoints(divisions);

+	}

+

+	return this.extractAllPoints(divisions);

+

+};

+

+//

+// THREE.Shape.prototype.extractAllPointsWithBend = function ( divisions, bend ) {

+//

+// 	return {

+//

+// 		shape: this.transform( bend, divisions ),

+// 		holes: this.getPointsHoles( divisions, bend )

+//

+// 	};

+//

+// };

+

+// Get points of shape and holes (spaced by regular distance)

+

+THREE.Shape.prototype.extractAllSpacedPoints = function ( divisions ) {

+

+	return {

+

+		shape: this.getTransformedSpacedPoints( divisions ),

+		holes: this.getSpacedPointsHoles( divisions )

+

+	};

+

+};

+

+/**************************************************************

+ *	Utils

+ **************************************************************/

+

+THREE.Shape.Utils = {

+

+	/*

+		contour - array of vector2 for contour

+		holes   - array of array of vector2

+	*/

+

+	removeHoles: function ( contour, holes ) {

+

+		var shape = contour.concat(); // work on this shape

+		var allpoints = shape.concat();

+

+		/* For each isolated shape, find the closest points and break to the hole to allow triangulation */

+

+

+		var prevShapeVert, nextShapeVert,

+			prevHoleVert, nextHoleVert,

+			holeIndex, shapeIndex,

+			shapeId, shapeGroup,

+			h, h2,

+			hole, shortest, d,

+			p, pts1, pts2,

+			tmpShape1, tmpShape2,

+			tmpHole1, tmpHole2,

+			verts = [];

+

+		for ( h = 0; h < holes.length; h ++ ) {

+

+			hole = holes[ h ];

+

+			/*

+			shapeholes[ h ].concat(); // preserves original

+			holes.push( hole );

+			*/

+

+			Array.prototype.push.apply( allpoints, hole );

+

+			shortest = Number.POSITIVE_INFINITY;

+

+

+			// Find the shortest pair of pts between shape and hole

+

+			// Note: Actually, I'm not sure now if we could optimize this to be faster than O(m*n)

+			// Using distanceToSquared() intead of distanceTo() should speed a little

+			// since running square roots operations are reduced.

+

+			for ( h2 = 0; h2 < hole.length; h2 ++ ) {

+

+				pts1 = hole[ h2 ];

+				var dist = [];

+

+				for ( p = 0; p < shape.length; p++ ) {

+

+					pts2 = shape[ p ];

+					d = pts1.distanceToSquared( pts2 );

+					dist.push( d );

+

+					if ( d < shortest ) {

+

+						shortest = d;

+						holeIndex = h2;

+						shapeIndex = p;

+

+					}

+

+				}

+

+			}

+

+			//console.log("shortest", shortest, dist);

+

+			prevShapeVert = ( shapeIndex - 1 ) >= 0 ? shapeIndex - 1 : shape.length - 1;

+			prevHoleVert = ( holeIndex - 1 ) >= 0 ? holeIndex - 1 : hole.length - 1;

+

+			var areaapts = [

+

+				hole[ holeIndex ],

+				shape[ shapeIndex ],

+				shape[ prevShapeVert ]

+

+			];

+

+			var areaa = THREE.FontUtils.Triangulate.area( areaapts );

+

+			var areabpts = [

+

+				hole[ holeIndex ],

+				hole[ prevHoleVert ],

+				shape[ shapeIndex ]

+

+			];

+

+			var areab = THREE.FontUtils.Triangulate.area( areabpts );

+

+			var shapeOffset = 1;

+			var holeOffset = -1;

+

+			var oldShapeIndex = shapeIndex, oldHoleIndex = holeIndex;

+			shapeIndex += shapeOffset;

+			holeIndex += holeOffset;

+

+			if ( shapeIndex < 0 ) { shapeIndex += shape.length;  }

+			shapeIndex %= shape.length;

+

+			if ( holeIndex < 0 ) { holeIndex += hole.length;  }

+			holeIndex %= hole.length;

+

+			prevShapeVert = ( shapeIndex - 1 ) >= 0 ? shapeIndex - 1 : shape.length - 1;

+			prevHoleVert = ( holeIndex - 1 ) >= 0 ? holeIndex - 1 : hole.length - 1;

+

+			areaapts = [

+

+				hole[ holeIndex ],

+				shape[ shapeIndex ],

+				shape[ prevShapeVert ]

+

+			];

+

+			var areaa2 = THREE.FontUtils.Triangulate.area( areaapts );

+

+			areabpts = [

+

+				hole[ holeIndex ],

+				hole[ prevHoleVert ],

+				shape[ shapeIndex ]

+

+			];

+

+			var areab2 = THREE.FontUtils.Triangulate.area( areabpts );

+			//console.log(areaa,areab ,areaa2,areab2, ( areaa + areab ),  ( areaa2 + areab2 ));

+

+			if ( ( areaa + areab ) > ( areaa2 + areab2 ) ) {

+

+				// In case areas are not correct.

+				//console.log("USE THIS");

+

+				shapeIndex = oldShapeIndex;

+				holeIndex = oldHoleIndex ;

+

+				if ( shapeIndex < 0 ) { shapeIndex += shape.length;  }

+				shapeIndex %= shape.length;

+

+				if ( holeIndex < 0 ) { holeIndex += hole.length;  }

+				holeIndex %= hole.length;

+

+				prevShapeVert = ( shapeIndex - 1 ) >= 0 ? shapeIndex - 1 : shape.length - 1;

+				prevHoleVert = ( holeIndex - 1 ) >= 0 ? holeIndex - 1 : hole.length - 1;

+

+			} else {

+

+				//console.log("USE THAT ")

+

+			}

+

+			tmpShape1 = shape.slice( 0, shapeIndex );

+			tmpShape2 = shape.slice( shapeIndex );

+			tmpHole1 = hole.slice( holeIndex );

+			tmpHole2 = hole.slice( 0, holeIndex );

+

+			// Should check orders here again?

+

+			var trianglea = [

+

+				hole[ holeIndex ],

+				shape[ shapeIndex ],

+				shape[ prevShapeVert ]

+

+			];

+

+			var triangleb = [

+

+				hole[ holeIndex ] ,

+				hole[ prevHoleVert ],

+				shape[ shapeIndex ]

+

+			];

+

+			verts.push( trianglea );

+			verts.push( triangleb );

+

+			shape = tmpShape1.concat( tmpHole1 ).concat( tmpHole2 ).concat( tmpShape2 );

+

+		}

+

+		return {

+

+			shape:shape, 		/* shape with no holes */

+			isolatedPts: verts, /* isolated faces */

+			allpoints: allpoints

+

+		}

+

+

+	},

+

+	triangulateShape: function ( contour, holes ) {

+

+		var shapeWithoutHoles = THREE.Shape.Utils.removeHoles( contour, holes );

+

+		var shape = shapeWithoutHoles.shape,

+			allpoints = shapeWithoutHoles.allpoints,

+			isolatedPts = shapeWithoutHoles.isolatedPts;

+

+		var triangles = THREE.FontUtils.Triangulate( shape, false ); // True returns indices for points of spooled shape

+

+		// To maintain reference to old shape, one must match coordinates, or offset the indices from original arrays. It's probably easier to do the first.

+

+		//console.log( "triangles",triangles, triangles.length );

+		//console.log( "allpoints",allpoints, allpoints.length );

+

+		var i, il, f, face,

+			key, index,

+			allPointsMap = {},

+			isolatedPointsMap = {};

+

+		// prepare all points map

+

+		for ( i = 0, il = allpoints.length; i < il; i ++ ) {

+

+			key = allpoints[ i ].x + ":" + allpoints[ i ].y;

+

+			if ( allPointsMap[ key ] !== undefined ) {

+

+				console.log( "Duplicate point", key );

+

+			}

+

+			allPointsMap[ key ] = i;

+

+		}

+

+		// check all face vertices against all points map

+

+		for ( i = 0, il = triangles.length; i < il; i ++ ) {

+

+			face = triangles[ i ];

+

+			for ( f = 0; f < 3; f ++ ) {

+

+				key = face[ f ].x + ":" + face[ f ].y;

+

+				index = allPointsMap[ key ];

+

+				if ( index !== undefined ) {

+

+					face[ f ] = index;

+

+				}

+

+			}

+

+		}

+

+		// check isolated points vertices against all points map

+

+		for ( i = 0, il = isolatedPts.length; i < il; i ++ ) {

+

+			face = isolatedPts[ i ];

+

+			for ( f = 0; f < 3; f ++ ) {

+

+				key = face[ f ].x + ":" + face[ f ].y;

+

+				index = allPointsMap[ key ];

+

+				if ( index !== undefined ) {

+

+					face[ f ] = index;

+

+				}

+

+			}

+

+		}

+

+		return triangles.concat( isolatedPts );

+

+	}, // end triangulate shapes

+

+	/*

+	triangulate2 : function( pts, holes ) {

+

+		// For use with Poly2Tri.js

+

+		var allpts = pts.concat();

+		var shape = [];

+		for (var p in pts) {

+			shape.push(new js.poly2tri.Point(pts[p].x, pts[p].y));

+		}

+

+		var swctx = new js.poly2tri.SweepContext(shape);

+

+		for (var h in holes) {

+			var aHole = holes[h];

+			var newHole = []

+			for (i in aHole) {

+				newHole.push(new js.poly2tri.Point(aHole[i].x, aHole[i].y));

+				allpts.push(aHole[i]);

+			}

+			swctx.AddHole(newHole);

+		}

+

+		var find;

+		var findIndexForPt = function (pt) {

+			find = new THREE.Vector2(pt.x, pt.y);

+			var p;

+			for (p=0, pl = allpts.length; p<pl; p++) {

+				if (allpts[p].equals(find)) return p;

+			}

+			return -1;

+		};

+

+		// triangulate

+		js.poly2tri.sweep.Triangulate(swctx);

+

+		var triangles =  swctx.GetTriangles();

+		var tr ;

+		var facesPts = [];

+		for (var t in triangles) {

+			tr =  triangles[t];

+			facesPts.push([

+				findIndexForPt(tr.GetPoint(0)),

+				findIndexForPt(tr.GetPoint(1)),

+				findIndexForPt(tr.GetPoint(2))

+					]);

+		}

+

+

+	//	console.log(facesPts);

+	//	console.log("triangles", triangles.length, triangles);

+

+		// Returns array of faces with 3 element each

+	return facesPts;

+	},

+*/

+

+	isClockWise: function ( pts ) {

+

+		return THREE.FontUtils.Triangulate.area( pts ) < 0;

+

+	},

+

+	// Bezier Curves formulas obtained from

+	// http://en.wikipedia.org/wiki/B%C3%A9zier_curve

+

+	// Quad Bezier Functions

+

+	b2p0: function ( t, p ) {

+

+		var k = 1 - t;

+		return k * k * p;

+

+	},

+

+	b2p1: function ( t, p ) {

+

+		return 2 * ( 1 - t ) * t * p;

+

+	},

+

+	b2p2: function ( t, p ) {

+

+		return t * t * p;

+

+	},

+

+	b2: function ( t, p0, p1, p2 ) {

+

+		return this.b2p0( t, p0 ) + this.b2p1( t, p1 ) + this.b2p2( t, p2 );

+

+	},

+

+	// Cubic Bezier Functions

+

+	b3p0: function ( t, p ) {

+

+		var k = 1 - t;

+		return k * k * k * p;

+

+	},

+

+	b3p1: function ( t, p ) {

+

+		var k = 1 - t;

+		return 3 * k * k * t * p;

+

+	},

+

+	b3p2: function ( t, p ) {

+

+		var k = 1 - t;

+		return 3 * k * t * t * p;

+

+	},

+

+	b3p3: function ( t, p ) {

+

+		return t * t * t * p;

+

+	},

+

+	b3: function ( t, p0, p1, p2, p3 ) {

+

+		return this.b3p0( t, p0 ) + this.b3p1( t, p1 ) + this.b3p2( t, p2 ) +  this.b3p3( t, p3 );

+

+	}

+

+};

+

+/**

+ * @author mikael emtinger / http://gomo.se/

+ */

+

+THREE.AnimationHandler = (function() {

+

+	var playing = [];

+	var library = {};

+	var that    = {};

+

+

+	//--- update ---

+

+	that.update = function( deltaTimeMS ) {

+

+		for( var i = 0; i < playing.length; i ++ )

+			playing[ i ].update( deltaTimeMS );

+

+	};

+

+

+	//--- add ---

+

+	that.addToUpdate = function( animation ) {

+

+		if ( playing.indexOf( animation ) === -1 )

+			playing.push( animation );

+

+	};

+

+

+	//--- remove ---

+

+	that.removeFromUpdate = function( animation ) {

+

+		var index = playing.indexOf( animation );

+

+		if( index !== -1 )

+			playing.splice( index, 1 );

+

+	};

+

+

+	//--- add ---

+

+	that.add = function( data ) {

+

+		if ( library[ data.name ] !== undefined )

+			console.log( "THREE.AnimationHandler.add: Warning! " + data.name + " already exists in library. Overwriting." );

+

+		library[ data.name ] = data;

+		initData( data );

+

+	};

+

+

+	//--- get ---

+

+	that.get = function( name ) {

+

+		if ( typeof name === "string" ) {

+

+			if ( library[ name ] ) {

+

+				return library[ name ];

+

+			} else {

+

+				console.log( "THREE.AnimationHandler.get: Couldn't find animation " + name );

+				return null;

+

+			}

+

+		} else {

+

+			// todo: add simple tween library

+

+		}

+

+	};

+

+	//--- parse ---

+

+	that.parse = function( root ) {

+

+		// setup hierarchy

+

+		var hierarchy = [];

+

+		if ( root instanceof THREE.SkinnedMesh ) {

+

+			for( var b = 0; b < root.bones.length; b++ ) {

+

+				hierarchy.push( root.bones[ b ] );

+

+			}

+

+		} else {

+

+			parseRecurseHierarchy( root, hierarchy );

+

+		}

+

+		return hierarchy;

+

+	};

+

+	var parseRecurseHierarchy = function( root, hierarchy ) {

+

+		hierarchy.push( root );

+

+		for( var c = 0; c < root.children.length; c++ )

+			parseRecurseHierarchy( root.children[ c ], hierarchy );

+

+	}

+

+

+	//--- init data ---

+

+	var initData = function( data ) {

+

+		if( data.initialized === true )

+			return;

+

+

+		// loop through all keys

+

+		for( var h = 0; h < data.hierarchy.length; h ++ ) {

+

+			for( var k = 0; k < data.hierarchy[ h ].keys.length; k ++ ) {

+

+				// remove minus times

+

+				if( data.hierarchy[ h ].keys[ k ].time < 0 )

+					data.hierarchy[ h ].keys[ k ].time = 0;

+

+

+				// create quaternions

+

+				if( data.hierarchy[ h ].keys[ k ].rot !== undefined &&

+				 !( data.hierarchy[ h ].keys[ k ].rot instanceof THREE.Quaternion ) ) {

+

+					var quat = data.hierarchy[ h ].keys[ k ].rot;

+					data.hierarchy[ h ].keys[ k ].rot = new THREE.Quaternion( quat[0], quat[1], quat[2], quat[3] );

+

+				}

+

+			}

+

+

+			// prepare morph target keys

+

+			if( data.hierarchy[ h ].keys.length && data.hierarchy[ h ].keys[ 0 ].morphTargets !== undefined ) {

+

+				// get all used

+

+				var usedMorphTargets = {};

+

+				for ( var k = 0; k < data.hierarchy[ h ].keys.length; k ++ ) {

+

+					for ( var m = 0; m < data.hierarchy[ h ].keys[ k ].morphTargets.length; m ++ ) {

+

+						var morphTargetName = data.hierarchy[ h ].keys[ k ].morphTargets[ m ];

+						usedMorphTargets[ morphTargetName ] = -1;

+

+					}

+

+				}

+

+				data.hierarchy[ h ].usedMorphTargets = usedMorphTargets;

+

+

+				// set all used on all frames

+

+				for ( var k = 0; k < data.hierarchy[ h ].keys.length; k ++ ) {

+

+					var influences = {};

+

+					for ( var morphTargetName in usedMorphTargets ) {

+

+						for ( var m = 0; m < data.hierarchy[ h ].keys[ k ].morphTargets.length; m ++ ) {

+

+							if ( data.hierarchy[ h ].keys[ k ].morphTargets[ m ] === morphTargetName ) {

+

+								influences[ morphTargetName ] = data.hierarchy[ h ].keys[ k ].morphTargetsInfluences[ m ];

+								break;

+

+							}

+

+						}

+

+						if ( m === data.hierarchy[ h ].keys[ k ].morphTargets.length ) {

+

+							influences[ morphTargetName ] = 0;

+

+						}

+

+					}

+

+					data.hierarchy[ h ].keys[ k ].morphTargetsInfluences = influences;

+

+				}

+

+			}

+

+

+			// remove all keys that are on the same time

+

+			for ( var k = 1; k < data.hierarchy[ h ].keys.length; k ++ ) {

+

+				if ( data.hierarchy[ h ].keys[ k ].time === data.hierarchy[ h ].keys[ k - 1 ].time ) {

+

+					data.hierarchy[ h ].keys.splice( k, 1 );

+					k --;

+

+				}

+

+			}

+

+

+			// set index

+

+			for ( var k = 0; k < data.hierarchy[ h ].keys.length; k ++ ) {

+

+				data.hierarchy[ h ].keys[ k ].index = k;

+

+			}

+

+		}

+

+

+		// JIT

+

+		var lengthInFrames = parseInt( data.length * data.fps, 10 );

+

+		data.JIT = {};

+		data.JIT.hierarchy = [];

+

+		for( var h = 0; h < data.hierarchy.length; h ++ )

+			data.JIT.hierarchy.push( new Array( lengthInFrames ) );

+

+

+		// done

+

+		data.initialized = true;

+

+	};

+

+

+	// interpolation types

+

+	that.LINEAR = 0;

+	that.CATMULLROM = 1;

+	that.CATMULLROM_FORWARD = 2;

+

+	return that;

+

+}());

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.Animation = function ( root, name, interpolationType ) {

+

+	this.root = root;

+	this.data = THREE.AnimationHandler.get( name );

+	this.hierarchy = THREE.AnimationHandler.parse( root );

+

+	this.currentTime = 0;

+	this.timeScale = 1;

+

+	this.isPlaying = false;

+	this.isPaused = true;

+	this.loop = true;

+

+	this.interpolationType = interpolationType !== undefined ? interpolationType : THREE.AnimationHandler.LINEAR;

+

+	this.points = [];

+	this.target = new THREE.Vector3();

+

+};

+

+THREE.Animation.prototype.play = function ( loop, startTimeMS ) {

+

+	if ( this.isPlaying === false ) {

+

+		this.isPlaying = true;

+		this.loop = loop !== undefined ? loop : true;

+		this.currentTime = startTimeMS !== undefined ? startTimeMS : 0;

+

+		// reset key cache

+

+		var h, hl = this.hierarchy.length,

+			object;

+

+		for ( h = 0; h < hl; h ++ ) {

+

+			object = this.hierarchy[ h ];

+

+			if ( this.interpolationType !== THREE.AnimationHandler.CATMULLROM_FORWARD ) {

+

+				object.useQuaternion = true;

+

+			}

+

+			object.matrixAutoUpdate = true;

+

+			if ( object.animationCache === undefined ) {

+

+				object.animationCache = {};

+				object.animationCache.prevKey = { pos: 0, rot: 0, scl: 0 };

+				object.animationCache.nextKey = { pos: 0, rot: 0, scl: 0 };

+				object.animationCache.originalMatrix = object instanceof THREE.Bone ? object.skinMatrix : object.matrix;

+

+			}

+

+			var prevKey = object.animationCache.prevKey;

+			var nextKey = object.animationCache.nextKey;

+

+			prevKey.pos = this.data.hierarchy[ h ].keys[ 0 ];

+			prevKey.rot = this.data.hierarchy[ h ].keys[ 0 ];

+			prevKey.scl = this.data.hierarchy[ h ].keys[ 0 ];

+

+			nextKey.pos = this.getNextKeyWith( "pos", h, 1 );

+			nextKey.rot = this.getNextKeyWith( "rot", h, 1 );

+			nextKey.scl = this.getNextKeyWith( "scl", h, 1 );

+

+		}

+

+		this.update( 0 );

+

+	}

+

+	this.isPaused = false;

+

+	THREE.AnimationHandler.addToUpdate( this );

+

+};

+

+

+THREE.Animation.prototype.pause = function() {

+

+	if ( this.isPaused === true ) {

+

+		THREE.AnimationHandler.addToUpdate( this );

+

+	} else {

+

+		THREE.AnimationHandler.removeFromUpdate( this );

+

+	}

+

+	this.isPaused = !this.isPaused;

+

+};

+

+

+THREE.Animation.prototype.stop = function() {

+

+	this.isPlaying = false;

+	this.isPaused  = false;

+	THREE.AnimationHandler.removeFromUpdate( this );

+

+};

+

+

+THREE.Animation.prototype.update = function ( deltaTimeMS ) {

+

+	// early out

+

+	if ( this.isPlaying === false ) return;

+

+

+	// vars

+

+	var types = [ "pos", "rot", "scl" ];

+	var type;

+	var scale;

+	var vector;

+	var prevXYZ, nextXYZ;

+	var prevKey, nextKey;

+	var object;

+	var animationCache;

+	var frame;

+	var JIThierarchy = this.data.JIT.hierarchy;

+	var currentTime, unloopedCurrentTime;

+	var currentPoint, forwardPoint, angle;

+

+

+	this.currentTime += deltaTimeMS * this.timeScale;

+

+	unloopedCurrentTime = this.currentTime;

+	currentTime = this.currentTime = this.currentTime % this.data.length;

+	frame = parseInt( Math.min( currentTime * this.data.fps, this.data.length * this.data.fps ), 10 );

+

+

+	for ( var h = 0, hl = this.hierarchy.length; h < hl; h ++ ) {

+

+		object = this.hierarchy[ h ];

+		animationCache = object.animationCache;

+

+		// loop through pos/rot/scl

+

+		for ( var t = 0; t < 3; t ++ ) {

+

+			// get keys

+

+			type    = types[ t ];

+			prevKey = animationCache.prevKey[ type ];

+			nextKey = animationCache.nextKey[ type ];

+

+			// switch keys?

+

+			if ( nextKey.time <= unloopedCurrentTime ) {

+

+				// did we loop?

+

+				if ( currentTime < unloopedCurrentTime ) {

+

+					if ( this.loop ) {

+

+						prevKey = this.data.hierarchy[ h ].keys[ 0 ];

+						nextKey = this.getNextKeyWith( type, h, 1 );

+

+						while( nextKey.time < currentTime ) {

+

+							prevKey = nextKey;

+							nextKey = this.getNextKeyWith( type, h, nextKey.index + 1 );

+

+						}

+

+					} else {

+

+						this.stop();

+						return;

+

+					}

+

+				} else {

+

+					do {

+

+						prevKey = nextKey;

+						nextKey = this.getNextKeyWith( type, h, nextKey.index + 1 );

+

+					} while( nextKey.time < currentTime )

+

+				}

+

+				animationCache.prevKey[ type ] = prevKey;

+				animationCache.nextKey[ type ] = nextKey;

+

+			}

+

+

+			object.matrixAutoUpdate = true;

+			object.matrixWorldNeedsUpdate = true;

+

+			scale = ( currentTime - prevKey.time ) / ( nextKey.time - prevKey.time );

+			prevXYZ = prevKey[ type ];

+			nextXYZ = nextKey[ type ];

+

+

+			// check scale error

+

+			if ( scale < 0 || scale > 1 ) {

+

+				console.log( "THREE.Animation.update: Warning! Scale out of bounds:" + scale + " on bone " + h );

+				scale = scale < 0 ? 0 : 1;

+

+			}

+

+			// interpolate

+

+			if ( type === "pos" ) {

+

+				vector = object.position;

+

+				if ( this.interpolationType === THREE.AnimationHandler.LINEAR ) {

+

+					vector.x = prevXYZ[ 0 ] + ( nextXYZ[ 0 ] - prevXYZ[ 0 ] ) * scale;

+					vector.y = prevXYZ[ 1 ] + ( nextXYZ[ 1 ] - prevXYZ[ 1 ] ) * scale;

+					vector.z = prevXYZ[ 2 ] + ( nextXYZ[ 2 ] - prevXYZ[ 2 ] ) * scale;

+

+				} else if ( this.interpolationType === THREE.AnimationHandler.CATMULLROM ||

+						    this.interpolationType === THREE.AnimationHandler.CATMULLROM_FORWARD ) {

+

+					this.points[ 0 ] = this.getPrevKeyWith( "pos", h, prevKey.index - 1 )[ "pos" ];

+					this.points[ 1 ] = prevXYZ;

+					this.points[ 2 ] = nextXYZ;

+					this.points[ 3 ] = this.getNextKeyWith( "pos", h, nextKey.index + 1 )[ "pos" ];

+

+					scale = scale * 0.33 + 0.33;

+

+					currentPoint = this.interpolateCatmullRom( this.points, scale );

+

+					vector.x = currentPoint[ 0 ];

+					vector.y = currentPoint[ 1 ];

+					vector.z = currentPoint[ 2 ];

+

+					if ( this.interpolationType === THREE.AnimationHandler.CATMULLROM_FORWARD ) {

+

+						forwardPoint = this.interpolateCatmullRom( this.points, scale * 1.01 );

+

+						this.target.set( forwardPoint[ 0 ], forwardPoint[ 1 ], forwardPoint[ 2 ] );

+						this.target.sub( vector );

+						this.target.y = 0;

+						this.target.normalize();

+

+						angle = Math.atan2( this.target.x, this.target.z );

+						object.rotation.set( 0, angle, 0 );

+

+					}

+

+				}

+

+			} else if ( type === "rot" ) {

+

+				THREE.Quaternion.slerp( prevXYZ, nextXYZ, object.quaternion, scale );

+

+			} else if ( type === "scl" ) {

+

+				vector = object.scale;

+

+				vector.x = prevXYZ[ 0 ] + ( nextXYZ[ 0 ] - prevXYZ[ 0 ] ) * scale;

+				vector.y = prevXYZ[ 1 ] + ( nextXYZ[ 1 ] - prevXYZ[ 1 ] ) * scale;

+				vector.z = prevXYZ[ 2 ] + ( nextXYZ[ 2 ] - prevXYZ[ 2 ] ) * scale;

+

+			}

+

+		}

+

+	}

+

+};

+

+// Catmull-Rom spline

+

+THREE.Animation.prototype.interpolateCatmullRom = function ( points, scale ) {

+

+	var c = [], v3 = [],

+	point, intPoint, weight, w2, w3,

+	pa, pb, pc, pd;

+

+	point = ( points.length - 1 ) * scale;

+	intPoint = Math.floor( point );

+	weight = point - intPoint;

+

+	c[ 0 ] = intPoint === 0 ? intPoint : intPoint - 1;

+	c[ 1 ] = intPoint;

+	c[ 2 ] = intPoint > points.length - 2 ? intPoint : intPoint + 1;

+	c[ 3 ] = intPoint > points.length - 3 ? intPoint : intPoint + 2;

+

+	pa = points[ c[ 0 ] ];

+	pb = points[ c[ 1 ] ];

+	pc = points[ c[ 2 ] ];

+	pd = points[ c[ 3 ] ];

+

+	w2 = weight * weight;

+	w3 = weight * w2;

+

+	v3[ 0 ] = this.interpolate( pa[ 0 ], pb[ 0 ], pc[ 0 ], pd[ 0 ], weight, w2, w3 );

+	v3[ 1 ] = this.interpolate( pa[ 1 ], pb[ 1 ], pc[ 1 ], pd[ 1 ], weight, w2, w3 );

+	v3[ 2 ] = this.interpolate( pa[ 2 ], pb[ 2 ], pc[ 2 ], pd[ 2 ], weight, w2, w3 );

+

+	return v3;

+

+};

+

+THREE.Animation.prototype.interpolate = function ( p0, p1, p2, p3, t, t2, t3 ) {

+

+	var v0 = ( p2 - p0 ) * 0.5,

+		v1 = ( p3 - p1 ) * 0.5;

+

+	return ( 2 * ( p1 - p2 ) + v0 + v1 ) * t3 + ( - 3 * ( p1 - p2 ) - 2 * v0 - v1 ) * t2 + v0 * t + p1;

+

+};

+

+

+

+// Get next key with

+

+THREE.Animation.prototype.getNextKeyWith = function ( type, h, key ) {

+

+	var keys = this.data.hierarchy[ h ].keys;

+

+	if ( this.interpolationType === THREE.AnimationHandler.CATMULLROM ||

+		 this.interpolationType === THREE.AnimationHandler.CATMULLROM_FORWARD ) {

+

+		key = key < keys.length - 1 ? key : keys.length - 1;

+

+	} else {

+

+		key = key % keys.length;

+

+	}

+

+	for ( ; key < keys.length; key++ ) {

+

+		if ( keys[ key ][ type ] !== undefined ) {

+

+			return keys[ key ];

+

+		}

+

+	}

+

+	return this.data.hierarchy[ h ].keys[ 0 ];

+

+};

+

+// Get previous key with

+

+THREE.Animation.prototype.getPrevKeyWith = function ( type, h, key ) {

+

+	var keys = this.data.hierarchy[ h ].keys;

+

+	if ( this.interpolationType === THREE.AnimationHandler.CATMULLROM ||

+		 this.interpolationType === THREE.AnimationHandler.CATMULLROM_FORWARD ) {

+

+		key = key > 0 ? key : 0;

+

+	} else {

+

+		key = key >= 0 ? key : key + keys.length;

+

+	}

+

+

+	for ( ; key >= 0; key -- ) {

+

+		if ( keys[ key ][ type ] !== undefined ) {

+

+			return keys[ key ];

+

+		}

+

+	}

+

+	return this.data.hierarchy[ h ].keys[ keys.length - 1 ];

+

+};

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author mrdoob / http://mrdoob.com/

+ * @author alteredq / http://alteredqualia.com/

+ * @author khang duong

+ * @author erik kitson

+ */

+

+THREE.KeyFrameAnimation = function( root, data, JITCompile ) {

+

+	this.root = root;

+	this.data = THREE.AnimationHandler.get( data );

+	this.hierarchy = THREE.AnimationHandler.parse( root );

+	this.currentTime = 0;

+	this.timeScale = 0.001;

+	this.isPlaying = false;

+	this.isPaused = true;

+	this.loop = true;

+	this.JITCompile = JITCompile !== undefined ? JITCompile : true;

+

+	// initialize to first keyframes

+

+	for ( var h = 0, hl = this.hierarchy.length; h < hl; h++ ) {

+

+		var keys = this.data.hierarchy[h].keys,

+			sids = this.data.hierarchy[h].sids,

+			obj = this.hierarchy[h];

+

+		if ( keys.length && sids ) {

+

+			for ( var s = 0; s < sids.length; s++ ) {

+

+				var sid = sids[ s ],

+					next = this.getNextKeyWith( sid, h, 0 );

+

+				if ( next ) {

+

+					next.apply( sid );

+

+				}

+

+			}

+

+			obj.matrixAutoUpdate = false;

+			this.data.hierarchy[h].node.updateMatrix();

+			obj.matrixWorldNeedsUpdate = true;

+

+		}

+

+	}

+

+};

+

+// Play

+

+THREE.KeyFrameAnimation.prototype.play = function( loop, startTimeMS ) {

+

+	if( !this.isPlaying ) {

+

+		this.isPlaying = true;

+		this.loop = loop !== undefined ? loop : true;

+		this.currentTime = startTimeMS !== undefined ? startTimeMS : 0;

+		this.startTimeMs = startTimeMS;

+		this.startTime = 10000000;

+		this.endTime = -this.startTime;

+

+

+		// reset key cache

+

+		var h, hl = this.hierarchy.length,

+			object,

+			node;

+

+		for ( h = 0; h < hl; h++ ) {

+

+			object = this.hierarchy[ h ];

+			node = this.data.hierarchy[ h ];

+			object.useQuaternion = true;

+

+			if ( node.animationCache === undefined ) {

+

+				node.animationCache = {};

+				node.animationCache.prevKey = null;

+				node.animationCache.nextKey = null;

+				node.animationCache.originalMatrix = object instanceof THREE.Bone ? object.skinMatrix : object.matrix;

+

+			}

+

+			var keys = this.data.hierarchy[h].keys;

+

+			if (keys.length) {

+

+				node.animationCache.prevKey = keys[ 0 ];

+				node.animationCache.nextKey = keys[ 1 ];

+

+				this.startTime = Math.min( keys[0].time, this.startTime );

+				this.endTime = Math.max( keys[keys.length - 1].time, this.endTime );

+

+			}

+

+		}

+

+		this.update( 0 );

+

+	}

+

+	this.isPaused = false;

+

+	THREE.AnimationHandler.addToUpdate( this );

+

+};

+

+

+

+// Pause

+

+THREE.KeyFrameAnimation.prototype.pause = function() {

+

+	if( this.isPaused ) {

+

+		THREE.AnimationHandler.addToUpdate( this );

+

+	} else {

+

+		THREE.AnimationHandler.removeFromUpdate( this );

+

+	}

+

+	this.isPaused = !this.isPaused;

+

+};

+

+

+// Stop

+

+THREE.KeyFrameAnimation.prototype.stop = function() {

+

+	this.isPlaying = false;

+	this.isPaused  = false;

+	THREE.AnimationHandler.removeFromUpdate( this );

+

+

+	// reset JIT matrix and remove cache

+

+	for ( var h = 0; h < this.data.hierarchy.length; h++ ) {

+        

+        var obj = this.hierarchy[ h ];

+		var node = this.data.hierarchy[ h ];

+

+		if ( node.animationCache !== undefined ) {

+

+			var original = node.animationCache.originalMatrix;

+

+			if( obj instanceof THREE.Bone ) {

+

+				original.copy( obj.skinMatrix );

+				obj.skinMatrix = original;

+

+			} else {

+

+				original.copy( obj.matrix );

+				obj.matrix = original;

+

+			}

+

+			delete node.animationCache;

+

+		}

+

+	}

+

+};

+

+

+// Update

+

+THREE.KeyFrameAnimation.prototype.update = function( deltaTimeMS ) {

+

+	// early out

+

+	if( !this.isPlaying ) return;

+

+

+	// vars

+

+	var prevKey, nextKey;

+	var object;

+	var node;

+	var frame;

+	var JIThierarchy = this.data.JIT.hierarchy;

+	var currentTime, unloopedCurrentTime;

+	var looped;

+

+

+	// update

+

+	this.currentTime += deltaTimeMS * this.timeScale;

+

+	unloopedCurrentTime = this.currentTime;

+	currentTime         = this.currentTime = this.currentTime % this.data.length;

+

+	// if looped around, the current time should be based on the startTime

+	if ( currentTime < this.startTimeMs ) {

+

+		currentTime = this.currentTime = this.startTimeMs + currentTime;

+

+	}

+

+	frame               = parseInt( Math.min( currentTime * this.data.fps, this.data.length * this.data.fps ), 10 );

+	looped 				= currentTime < unloopedCurrentTime;

+

+	if ( looped && !this.loop ) {

+

+		// Set the animation to the last keyframes and stop

+		for ( var h = 0, hl = this.hierarchy.length; h < hl; h++ ) {

+

+			var keys = this.data.hierarchy[h].keys,

+				sids = this.data.hierarchy[h].sids,

+				end = keys.length-1,

+				obj = this.hierarchy[h];

+

+			if ( keys.length ) {

+

+				for ( var s = 0; s < sids.length; s++ ) {

+

+					var sid = sids[ s ],

+						prev = this.getPrevKeyWith( sid, h, end );

+

+					if ( prev ) {

+						prev.apply( sid );

+

+					}

+

+				}

+

+				this.data.hierarchy[h].node.updateMatrix();

+				obj.matrixWorldNeedsUpdate = true;

+

+			}

+

+		}

+

+		this.stop();

+		return;

+

+	}

+

+	// check pre-infinity

+	if ( currentTime < this.startTime ) {

+

+		return;

+

+	}

+

+	// update

+

+	for ( var h = 0, hl = this.hierarchy.length; h < hl; h++ ) {

+

+		object = this.hierarchy[ h ];

+		node = this.data.hierarchy[ h ];

+

+		var keys = node.keys,

+			animationCache = node.animationCache;

+

+		// use JIT?

+

+		if ( this.JITCompile && JIThierarchy[ h ][ frame ] !== undefined ) {

+

+			if( object instanceof THREE.Bone ) {

+

+				object.skinMatrix = JIThierarchy[ h ][ frame ];

+				object.matrixWorldNeedsUpdate = false;

+

+			} else {

+

+				object.matrix = JIThierarchy[ h ][ frame ];

+				object.matrixWorldNeedsUpdate = true;

+

+			}

+

+		// use interpolation

+

+		} else if ( keys.length ) {

+

+			// make sure so original matrix and not JIT matrix is set

+

+			if ( this.JITCompile && animationCache ) {

+

+				if( object instanceof THREE.Bone ) {

+

+					object.skinMatrix = animationCache.originalMatrix;

+

+				} else {

+

+					object.matrix = animationCache.originalMatrix;

+

+				}

+

+			}

+

+			prevKey = animationCache.prevKey;

+			nextKey = animationCache.nextKey;

+

+			if ( prevKey && nextKey ) {

+

+				// switch keys?

+

+				if ( nextKey.time <= unloopedCurrentTime ) {

+

+					// did we loop?

+

+					if ( looped && this.loop ) {

+

+						prevKey = keys[ 0 ];

+						nextKey = keys[ 1 ];

+

+						while ( nextKey.time < currentTime ) {

+

+							prevKey = nextKey;

+							nextKey = keys[ prevKey.index + 1 ];

+

+						}

+

+					} else if ( !looped ) {

+

+						var lastIndex = keys.length - 1;

+

+						while ( nextKey.time < currentTime && nextKey.index !== lastIndex ) {

+

+							prevKey = nextKey;

+							nextKey = keys[ prevKey.index + 1 ];

+

+						}

+

+					}

+

+					animationCache.prevKey = prevKey;

+					animationCache.nextKey = nextKey;

+

+				}

+                if(nextKey.time >= currentTime)

+                    prevKey.interpolate( nextKey, currentTime );

+                else

+                    prevKey.interpolate( nextKey, nextKey.time);

+

+			}

+

+			this.data.hierarchy[h].node.updateMatrix();

+			object.matrixWorldNeedsUpdate = true;

+

+		}

+

+	}

+

+	// update JIT?

+

+	if ( this.JITCompile ) {

+

+		if ( JIThierarchy[ 0 ][ frame ] === undefined ) {

+

+			this.hierarchy[ 0 ].updateMatrixWorld( true );

+

+			for ( var h = 0; h < this.hierarchy.length; h++ ) {

+

+				if( this.hierarchy[ h ] instanceof THREE.Bone ) {

+

+					JIThierarchy[ h ][ frame ] = this.hierarchy[ h ].skinMatrix.clone();

+

+				} else {

+

+					JIThierarchy[ h ][ frame ] = this.hierarchy[ h ].matrix.clone();

+

+				}

+

+			}

+

+		}

+

+	}

+

+};

+

+// Get next key with

+

+THREE.KeyFrameAnimation.prototype.getNextKeyWith = function( sid, h, key ) {

+

+	var keys = this.data.hierarchy[ h ].keys;

+	key = key % keys.length;

+

+	for ( ; key < keys.length; key++ ) {

+

+		if ( keys[ key ].hasTarget( sid ) ) {

+

+			return keys[ key ];

+

+		}

+

+	}

+

+	return keys[ 0 ];

+

+};

+

+// Get previous key with

+

+THREE.KeyFrameAnimation.prototype.getPrevKeyWith = function( sid, h, key ) {

+

+	var keys = this.data.hierarchy[ h ].keys;

+	key = key >= 0 ? key : key + keys.length;

+

+	for ( ; key >= 0; key-- ) {

+

+		if ( keys[ key ].hasTarget( sid ) ) {

+

+			return keys[ key ];

+

+		}

+

+	}

+

+	return keys[ keys.length - 1 ];

+

+};

+/**

+ * Camera for rendering cube maps

+ *	- renders scene into axis-aligned cube

+ *

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.CubeCamera = function ( near, far, cubeResolution ) {

+

+	THREE.Object3D.call( this );

+

+	var fov = 90, aspect = 1;

+

+	var cameraPX = new THREE.PerspectiveCamera( fov, aspect, near, far );

+	cameraPX.up.set( 0, -1, 0 );

+	cameraPX.lookAt( new THREE.Vector3( 1, 0, 0 ) );

+	this.add( cameraPX );

+

+	var cameraNX = new THREE.PerspectiveCamera( fov, aspect, near, far );

+	cameraNX.up.set( 0, -1, 0 );

+	cameraNX.lookAt( new THREE.Vector3( -1, 0, 0 ) );

+	this.add( cameraNX );

+

+	var cameraPY = new THREE.PerspectiveCamera( fov, aspect, near, far );

+	cameraPY.up.set( 0, 0, 1 );

+	cameraPY.lookAt( new THREE.Vector3( 0, 1, 0 ) );

+	this.add( cameraPY );

+

+	var cameraNY = new THREE.PerspectiveCamera( fov, aspect, near, far );

+	cameraNY.up.set( 0, 0, -1 );

+	cameraNY.lookAt( new THREE.Vector3( 0, -1, 0 ) );

+	this.add( cameraNY );

+

+	var cameraPZ = new THREE.PerspectiveCamera( fov, aspect, near, far );

+	cameraPZ.up.set( 0, -1, 0 );

+	cameraPZ.lookAt( new THREE.Vector3( 0, 0, 1 ) );

+	this.add( cameraPZ );

+

+	var cameraNZ = new THREE.PerspectiveCamera( fov, aspect, near, far );

+	cameraNZ.up.set( 0, -1, 0 );

+	cameraNZ.lookAt( new THREE.Vector3( 0, 0, -1 ) );

+	this.add( cameraNZ );

+

+	this.renderTarget = new THREE.WebGLRenderTargetCube( cubeResolution, cubeResolution, { format: THREE.RGBFormat, magFilter: THREE.LinearFilter, minFilter: THREE.LinearFilter } );

+

+	this.updateCubeMap = function ( renderer, scene ) {

+

+		var renderTarget = this.renderTarget;

+		var generateMipmaps = renderTarget.generateMipmaps;

+

+		renderTarget.generateMipmaps = false;

+

+		renderTarget.activeCubeFace = 0;

+		renderer.render( scene, cameraPX, renderTarget );

+

+		renderTarget.activeCubeFace = 1;

+		renderer.render( scene, cameraNX, renderTarget );

+

+		renderTarget.activeCubeFace = 2;

+		renderer.render( scene, cameraPY, renderTarget );

+

+		renderTarget.activeCubeFace = 3;

+		renderer.render( scene, cameraNY, renderTarget );

+

+		renderTarget.activeCubeFace = 4;

+		renderer.render( scene, cameraPZ, renderTarget );

+

+		renderTarget.generateMipmaps = generateMipmaps;

+

+		renderTarget.activeCubeFace = 5;

+		renderer.render( scene, cameraNZ, renderTarget );

+

+	};

+

+};

+

+THREE.CubeCamera.prototype = Object.create( THREE.Object3D.prototype );

+/*

+ *	@author zz85 / http://twitter.com/blurspline / http://www.lab4games.net/zz85/blog

+ *

+ *	A general perpose camera, for setting FOV, Lens Focal Length,

+ *		and switching between perspective and orthographic views easily.

+ *		Use this only if you do not wish to manage

+ *		both a Orthographic and Perspective Camera

+ *

+ */

+

+

+THREE.CombinedCamera = function ( width, height, fov, near, far, orthoNear, orthoFar ) {

+

+	THREE.Camera.call( this );

+

+	this.fov = fov;

+

+	this.left = -width / 2;

+	this.right = width / 2

+	this.top = height / 2;

+	this.bottom = -height / 2;

+

+	// We could also handle the projectionMatrix internally, but just wanted to test nested camera objects

+

+	this.cameraO = new THREE.OrthographicCamera( width / - 2, width / 2, height / 2, height / - 2, 	orthoNear, orthoFar );

+	this.cameraP = new THREE.PerspectiveCamera( fov, width / height, near, far );

+

+	this.zoom = 1;

+

+	this.toPerspective();

+

+	var aspect = width/height;

+

+};

+

+THREE.CombinedCamera.prototype = Object.create( THREE.Camera.prototype );

+

+THREE.CombinedCamera.prototype.toPerspective = function () {

+

+	// Switches to the Perspective Camera

+

+	this.near = this.cameraP.near;

+	this.far = this.cameraP.far;

+

+	this.cameraP.fov =  this.fov / this.zoom ;

+

+	this.cameraP.updateProjectionMatrix();

+

+	this.projectionMatrix = this.cameraP.projectionMatrix;

+

+	this.inPerspectiveMode = true;

+	this.inOrthographicMode = false;

+

+};

+

+THREE.CombinedCamera.prototype.toOrthographic = function () {

+

+	// Switches to the Orthographic camera estimating viewport from Perspective

+

+	var fov = this.fov;

+	var aspect = this.cameraP.aspect;

+	var near = this.cameraP.near;

+	var far = this.cameraP.far;

+

+	// The size that we set is the mid plane of the viewing frustum

+

+	var hyperfocus = ( near + far ) / 2;

+

+	var halfHeight = Math.tan( fov / 2 ) * hyperfocus;

+	var planeHeight = 2 * halfHeight;

+	var planeWidth = planeHeight * aspect;

+	var halfWidth = planeWidth / 2;

+

+	halfHeight /= this.zoom;

+	halfWidth /= this.zoom;

+

+	this.cameraO.left = -halfWidth;

+	this.cameraO.right = halfWidth;

+	this.cameraO.top = halfHeight;

+	this.cameraO.bottom = -halfHeight;

+

+	// this.cameraO.left = -farHalfWidth;

+	// this.cameraO.right = farHalfWidth;

+	// this.cameraO.top = farHalfHeight;

+	// this.cameraO.bottom = -farHalfHeight;

+

+	// this.cameraO.left = this.left / this.zoom;

+	// this.cameraO.right = this.right / this.zoom;

+	// this.cameraO.top = this.top / this.zoom;

+	// this.cameraO.bottom = this.bottom / this.zoom;

+

+	this.cameraO.updateProjectionMatrix();

+

+	this.near = this.cameraO.near;

+	this.far = this.cameraO.far;

+	this.projectionMatrix = this.cameraO.projectionMatrix;

+

+	this.inPerspectiveMode = false;

+	this.inOrthographicMode = true;

+

+};

+

+

+THREE.CombinedCamera.prototype.setSize = function( width, height ) {

+

+	this.cameraP.aspect = width / height;

+	this.left = -width / 2;

+	this.right = width / 2

+	this.top = height / 2;

+	this.bottom = -height / 2;

+

+};

+

+

+THREE.CombinedCamera.prototype.setFov = function( fov ) {

+

+	this.fov = fov;

+

+	if ( this.inPerspectiveMode ) {

+

+		this.toPerspective();

+

+	} else {

+

+		this.toOrthographic();

+

+	}

+

+};

+

+// For mantaining similar API with PerspectiveCamera

+

+THREE.CombinedCamera.prototype.updateProjectionMatrix = function() {

+

+	if ( this.inPerspectiveMode ) {

+

+		this.toPerspective();

+

+	} else {

+

+		this.toPerspective();

+		this.toOrthographic();

+

+	}

+

+};

+

+/*

+* Uses Focal Length (in mm) to estimate and set FOV

+* 35mm (fullframe) camera is used if frame size is not specified;

+* Formula based on http://www.bobatkins.com/photography/technical/field_of_view.html

+*/

+THREE.CombinedCamera.prototype.setLens = function ( focalLength, frameHeight ) {

+

+	if ( frameHeight === undefined ) frameHeight = 24;

+

+	var fov = 2 * THREE.Math.radToDeg( Math.atan( frameHeight / ( focalLength * 2 ) ) );

+

+	this.setFov( fov );

+

+	return fov;

+};

+

+

+THREE.CombinedCamera.prototype.setZoom = function( zoom ) {

+

+	this.zoom = zoom;

+

+	if ( this.inPerspectiveMode ) {

+

+		this.toPerspective();

+

+	} else {

+

+		this.toOrthographic();

+

+	}

+

+};

+

+THREE.CombinedCamera.prototype.toFrontView = function() {

+

+	this.rotation.x = 0;

+	this.rotation.y = 0;

+	this.rotation.z = 0;

+

+	// should we be modifing the matrix instead?

+

+	this.rotationAutoUpdate = false;

+

+};

+

+THREE.CombinedCamera.prototype.toBackView = function() {

+

+	this.rotation.x = 0;

+	this.rotation.y = Math.PI;

+	this.rotation.z = 0;

+	this.rotationAutoUpdate = false;

+

+};

+

+THREE.CombinedCamera.prototype.toLeftView = function() {

+

+	this.rotation.x = 0;

+	this.rotation.y = - Math.PI / 2;

+	this.rotation.z = 0;

+	this.rotationAutoUpdate = false;

+

+};

+

+THREE.CombinedCamera.prototype.toRightView = function() {

+

+	this.rotation.x = 0;

+	this.rotation.y = Math.PI / 2;

+	this.rotation.z = 0;

+	this.rotationAutoUpdate = false;

+

+};

+

+THREE.CombinedCamera.prototype.toTopView = function() {

+

+	this.rotation.x = - Math.PI / 2;

+	this.rotation.y = 0;

+	this.rotation.z = 0;

+	this.rotationAutoUpdate = false;

+

+};

+

+THREE.CombinedCamera.prototype.toBottomView = function() {

+

+	this.rotation.x = Math.PI / 2;

+	this.rotation.y = 0;

+	this.rotation.z = 0;

+	this.rotationAutoUpdate = false;

+

+};

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ *	- 3d asterisk shape (for line pieces THREE.Line)

+ */

+

+THREE.AsteriskGeometry = function ( innerRadius, outerRadius ) {

+

+	THREE.Geometry.call( this );

+

+	var sd = innerRadius;

+	var ed = outerRadius;

+

+	var sd2 = 0.707 * sd;

+	var ed2 = 0.707 * ed;

+

+	var rays = [ [ sd, 0, 0 ], [ ed, 0, 0 ], [ -sd, 0, 0 ], [ -ed, 0, 0 ],

+				 [ 0, sd, 0 ], [ 0, ed, 0 ], [ 0, -sd, 0 ], [ 0, -ed, 0 ],

+				 [ 0, 0, sd ], [ 0, 0, ed ], [ 0, 0, -sd ], [ 0, 0, -ed ],

+				 [ sd2, sd2, 0 ], [ ed2, ed2, 0 ], [ -sd2, -sd2, 0 ], [ -ed2, -ed2, 0 ],

+				 [ sd2, -sd2, 0 ], [ ed2, -ed2, 0 ], [ -sd2, sd2, 0 ], [ -ed2, ed2, 0 ],

+				 [ sd2, 0, sd2 ], [ ed2, 0, ed2 ], [ -sd2, 0, -sd2 ], [ -ed2, 0, -ed2 ],

+				 [ sd2, 0, -sd2 ], [ ed2, 0, -ed2 ], [ -sd2, 0, sd2 ], [ -ed2, 0, ed2 ],

+				 [ 0, sd2, sd2 ], [ 0, ed2, ed2 ], [ 0, -sd2, -sd2 ], [ 0, -ed2, -ed2 ],

+				 [ 0, sd2, -sd2 ], [ 0, ed2, -ed2 ], [ 0, -sd2, sd2 ], [ 0, -ed2, ed2 ]

+	];

+

+	for ( var i = 0, il = rays.length; i < il; i ++ ) {

+

+		var x = rays[ i ][ 0 ];

+		var y = rays[ i ][ 1 ];

+		var z = rays[ i ][ 2 ];

+

+		this.vertices.push( new THREE.Vector3( x, y, z ) );

+

+	}

+

+};

+

+THREE.AsteriskGeometry.prototype = Object.create( THREE.Geometry.prototype );/**

+ * @author hughes

+ */

+

+THREE.CircleGeometry = function ( radius, segments, thetaStart, thetaLength ) {

+

+    THREE.Geometry.call( this );

+

+    radius = radius || 50;

+

+    thetaStart = thetaStart !== undefined ? thetaStart : 0;

+    thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;

+    segments = segments !== undefined ? Math.max( 3, segments ) : 8;

+

+    var i, uvs = [],

+    center = new THREE.Vector3(), centerUV = new THREE.Vector2( 0.5, 0.5 );

+

+    this.vertices.push(center);

+    uvs.push( centerUV );

+

+    for ( i = 0; i <= segments; i ++ ) {

+

+        var vertex = new THREE.Vector3();

+

+        vertex.x = radius * Math.cos( thetaStart + i / segments * thetaLength );

+        vertex.y = radius * Math.sin( thetaStart + i / segments * thetaLength );

+

+        this.vertices.push( vertex );

+        uvs.push( new THREE.Vector2( ( vertex.x / radius + 1 ) / 2, - ( vertex.y / radius + 1 ) / 2 + 1 ) );

+

+    }

+

+    var n = new THREE.Vector3( 0, 0, -1 );

+

+    for ( i = 1; i <= segments; i ++ ) {

+

+        var v1 = i;

+        var v2 = i + 1 ;

+        var v3 = 0;

+

+        this.faces.push( new THREE.Face3( v1, v2, v3, [ n, n, n ] ) );

+        this.faceVertexUvs[ 0 ].push( [ uvs[ i ], uvs[ i + 1 ], centerUV ] );

+

+    }

+

+    this.computeCentroids();

+    this.computeFaceNormals();

+

+    this.boundingSphere = new THREE.Sphere( new THREE.Vector3(), radius );

+

+};

+

+THREE.CircleGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * based on http://papervision3d.googlecode.com/svn/trunk/as3/trunk/src/org/papervision3d/objects/primitives/Cube.as

+ */

+

+THREE.CubeGeometry = function ( width, height, depth, widthSegments, heightSegments, depthSegments ) {

+

+	THREE.Geometry.call( this );

+

+	var scope = this;

+

+	this.width = width;

+	this.height = height;

+	this.depth = depth;

+

+	this.widthSegments = widthSegments || 1;

+	this.heightSegments = heightSegments || 1;

+	this.depthSegments = depthSegments || 1;

+

+	var width_half = this.width / 2;

+	var height_half = this.height / 2;

+	var depth_half = this.depth / 2;

+

+	buildPlane( 'z', 'y', - 1, - 1, this.depth, this.height, width_half, 0 ); // px

+	buildPlane( 'z', 'y',   1, - 1, this.depth, this.height, - width_half, 1 ); // nx

+	buildPlane( 'x', 'z',   1,   1, this.width, this.depth, height_half, 2 ); // py

+	buildPlane( 'x', 'z',   1, - 1, this.width, this.depth, - height_half, 3 ); // ny

+	buildPlane( 'x', 'y',   1, - 1, this.width, this.height, depth_half, 4 ); // pz

+	buildPlane( 'x', 'y', - 1, - 1, this.width, this.height, - depth_half, 5 ); // nz

+

+	function buildPlane( u, v, udir, vdir, width, height, depth, materialIndex ) {

+

+		var w, ix, iy,

+		gridX = scope.widthSegments,

+		gridY = scope.heightSegments,

+		width_half = width / 2,

+		height_half = height / 2,

+		offset = scope.vertices.length;

+

+		if ( ( u === 'x' && v === 'y' ) || ( u === 'y' && v === 'x' ) ) {

+

+			w = 'z';

+

+		} else if ( ( u === 'x' && v === 'z' ) || ( u === 'z' && v === 'x' ) ) {

+

+			w = 'y';

+			gridY = scope.depthSegments;

+

+		} else if ( ( u === 'z' && v === 'y' ) || ( u === 'y' && v === 'z' ) ) {

+

+			w = 'x';

+			gridX = scope.depthSegments;

+

+		}

+

+		var gridX1 = gridX + 1,

+		gridY1 = gridY + 1,

+		segment_width = width / gridX,

+		segment_height = height / gridY,

+		normal = new THREE.Vector3();

+

+		normal[ w ] = depth > 0 ? 1 : - 1;

+

+		for ( iy = 0; iy < gridY1; iy ++ ) {

+

+			for ( ix = 0; ix < gridX1; ix ++ ) {

+

+				var vector = new THREE.Vector3();

+				vector[ u ] = ( ix * segment_width - width_half ) * udir;

+				vector[ v ] = ( iy * segment_height - height_half ) * vdir;

+				vector[ w ] = depth;

+

+				scope.vertices.push( vector );

+

+			}

+

+		}

+

+		for ( iy = 0; iy < gridY; iy++ ) {

+

+			for ( ix = 0; ix < gridX; ix++ ) {

+

+				var a = ix + gridX1 * iy;

+				var b = ix + gridX1 * ( iy + 1 );

+				var c = ( ix + 1 ) + gridX1 * ( iy + 1 );

+				var d = ( ix + 1 ) + gridX1 * iy;

+

+				var face = new THREE.Face4( a + offset, b + offset, c + offset, d + offset );

+				face.normal.copy( normal );

+				face.vertexNormals.push( normal.clone(), normal.clone(), normal.clone(), normal.clone() );

+				face.materialIndex = materialIndex;

+

+				scope.faces.push( face );

+				scope.faceVertexUvs[ 0 ].push( [

+							new THREE.Vector2( ix / gridX, 1 - iy / gridY ),

+							new THREE.Vector2( ix / gridX, 1 - ( iy + 1 ) / gridY ),

+							new THREE.Vector2( ( ix + 1 ) / gridX, 1- ( iy + 1 ) / gridY ),

+							new THREE.Vector2( ( ix + 1 ) / gridX, 1 - iy / gridY )

+						] );

+

+			}

+

+		}

+

+	}

+

+	this.computeCentroids();

+	this.mergeVertices();

+

+};

+

+THREE.CubeGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.CylinderGeometry = function ( radiusTop, radiusBottom, height, radiusSegments, heightSegments, openEnded ) {

+

+	THREE.Geometry.call( this );

+

+	radiusTop = radiusTop !== undefined ? radiusTop : 20;

+	radiusBottom = radiusBottom !== undefined ? radiusBottom : 20;

+	height = height !== undefined ? height : 100;

+

+	var heightHalf = height / 2;

+	var segmentsX = radiusSegments || 8;

+	var segmentsY = heightSegments || 1;

+

+	var x, y, vertices = [], uvs = [];

+

+	for ( y = 0; y <= segmentsY; y ++ ) {

+

+		var verticesRow = [];

+		var uvsRow = [];

+

+		var v = y / segmentsY;

+		var radius = v * ( radiusBottom - radiusTop ) + radiusTop;

+

+		for ( x = 0; x <= segmentsX; x ++ ) {

+

+			var u = x / segmentsX;

+

+			var vertex = new THREE.Vector3();

+			vertex.x = radius * Math.sin( u * Math.PI * 2 );

+			vertex.y = - v * height + heightHalf;

+			vertex.z = radius * Math.cos( u * Math.PI * 2 );

+

+			this.vertices.push( vertex );

+

+			verticesRow.push( this.vertices.length - 1 );

+			uvsRow.push( new THREE.Vector2( u, 1 - v ) );

+

+		}

+

+		vertices.push( verticesRow );

+		uvs.push( uvsRow );

+

+	}

+

+	var tanTheta = ( radiusBottom - radiusTop ) / height;

+	var na, nb;

+

+	for ( x = 0; x < segmentsX; x ++ ) {

+

+		if ( radiusTop !== 0 ) {

+

+			na = this.vertices[ vertices[ 0 ][ x ] ].clone();

+			nb = this.vertices[ vertices[ 0 ][ x + 1 ] ].clone();

+

+		} else {

+

+			na = this.vertices[ vertices[ 1 ][ x ] ].clone();

+			nb = this.vertices[ vertices[ 1 ][ x + 1 ] ].clone();

+

+		}

+

+		na.setY( Math.sqrt( na.x * na.x + na.z * na.z ) * tanTheta ).normalize();

+		nb.setY( Math.sqrt( nb.x * nb.x + nb.z * nb.z ) * tanTheta ).normalize();

+

+		for ( y = 0; y < segmentsY; y ++ ) {

+

+			var v1 = vertices[ y ][ x ];

+			var v2 = vertices[ y + 1 ][ x ];

+			var v3 = vertices[ y + 1 ][ x + 1 ];

+			var v4 = vertices[ y ][ x + 1 ];

+

+			var n1 = na.clone();

+			var n2 = na.clone();

+			var n3 = nb.clone();

+			var n4 = nb.clone();

+

+			var uv1 = uvs[ y ][ x ].clone();

+			var uv2 = uvs[ y + 1 ][ x ].clone();

+			var uv3 = uvs[ y + 1 ][ x + 1 ].clone();

+			var uv4 = uvs[ y ][ x + 1 ].clone();

+

+			this.faces.push( new THREE.Face4( v1, v2, v3, v4, [ n1, n2, n3, n4 ] ) );

+			this.faceVertexUvs[ 0 ].push( [ uv1, uv2, uv3, uv4 ] );

+

+		}

+

+	}

+

+	// top cap

+

+	if ( !openEnded && radiusTop > 0 ) {

+

+		this.vertices.push( new THREE.Vector3( 0, heightHalf, 0 ) );

+

+		for ( x = 0; x < segmentsX; x ++ ) {

+

+			var v1 = vertices[ 0 ][ x ];

+			var v2 = vertices[ 0 ][ x + 1 ];

+			var v3 = this.vertices.length - 1;

+

+			var n1 = new THREE.Vector3( 0, 1, 0 );

+			var n2 = new THREE.Vector3( 0, 1, 0 );

+			var n3 = new THREE.Vector3( 0, 1, 0 );

+

+			var uv1 = uvs[ 0 ][ x ].clone();

+			var uv2 = uvs[ 0 ][ x + 1 ].clone();

+			var uv3 = new THREE.Vector2( uv2.u, 0 );

+

+			this.faces.push( new THREE.Face3( v1, v2, v3, [ n1, n2, n3 ] ) );

+			this.faceVertexUvs[ 0 ].push( [ uv1, uv2, uv3 ] );

+

+		}

+

+	}

+

+	// bottom cap

+

+	if ( !openEnded && radiusBottom > 0 ) {

+

+		this.vertices.push( new THREE.Vector3( 0, - heightHalf, 0 ) );

+

+		for ( x = 0; x < segmentsX; x ++ ) {

+

+			var v1 = vertices[ y ][ x + 1 ];

+			var v2 = vertices[ y ][ x ];

+			var v3 = this.vertices.length - 1;

+

+			var n1 = new THREE.Vector3( 0, - 1, 0 );

+			var n2 = new THREE.Vector3( 0, - 1, 0 );

+			var n3 = new THREE.Vector3( 0, - 1, 0 );

+

+			var uv1 = uvs[ y ][ x + 1 ].clone();

+			var uv2 = uvs[ y ][ x ].clone();

+			var uv3 = new THREE.Vector2( uv2.u, 1 );

+

+			this.faces.push( new THREE.Face3( v1, v2, v3, [ n1, n2, n3 ] ) );

+			this.faceVertexUvs[ 0 ].push( [ uv1, uv2, uv3 ] );

+

+		}

+

+	}

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+

+}

+

+THREE.CylinderGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ *

+ * Creates extruded geometry from a path shape.

+ *

+ * parameters = {

+ *

+ *  size: <float>, // size of the text

+ *  height: <float>, // thickness to extrude text

+ *  curveSegments: <int>, // number of points on the curves

+ *  steps: <int>, // number of points for z-side extrusions / used for subdividing segements of extrude spline too

+ *  amount: <int>, // Amount

+ *

+ *  bevelEnabled: <bool>, // turn on bevel

+ *  bevelThickness: <float>, // how deep into text bevel goes

+ *  bevelSize: <float>, // how far from text outline is bevel

+ *  bevelSegments: <int>, // number of bevel layers

+ *

+ *  extrudePath: <THREE.CurvePath> // 3d spline path to extrude shape along. (creates Frames if .frames aren't defined)

+ *  frames: <THREE.TubeGeometry.FrenetFrames> // containing arrays of tangents, normals, binormals

+ *

+ *  material: <int> // material index for front and back faces

+ *  extrudeMaterial: <int> // material index for extrusion and beveled faces

+ *  uvGenerator: <Object> // object that provides UV generator functions

+ *

+ * }

+ **/

+

+THREE.ExtrudeGeometry = function ( shapes, options ) {

+

+	if ( typeof( shapes ) === "undefined" ) {

+		shapes = [];

+		return;

+	}

+

+	THREE.Geometry.call( this );

+

+	shapes = shapes instanceof Array ? shapes : [ shapes ];

+

+	this.shapebb = shapes[ shapes.length - 1 ].getBoundingBox();

+

+	this.addShapeList( shapes, options );

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+

+	// can't really use automatic vertex normals

+	// as then front and back sides get smoothed too

+	// should do separate smoothing just for sides

+

+	//this.computeVertexNormals();

+

+	//console.log( "took", ( Date.now() - startTime ) );

+

+};

+

+THREE.ExtrudeGeometry.prototype = Object.create( THREE.Geometry.prototype );

+

+THREE.ExtrudeGeometry.prototype.addShapeList = function ( shapes, options ) {

+	var sl = shapes.length;

+

+	for ( var s = 0; s < sl; s ++ ) {

+		var shape = shapes[ s ];

+		this.addShape( shape, options );

+	}

+};

+

+THREE.ExtrudeGeometry.prototype.addShape = function ( shape, options ) {

+

+	var amount = options.amount !== undefined ? options.amount : 100;

+

+	var bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6; // 10

+	var bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2; // 8

+	var bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;

+

+	var bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true; // false

+

+	var curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;

+

+	var steps = options.steps !== undefined ? options.steps : 1;

+

+	var extrudePath = options.extrudePath;

+	var extrudePts, extrudeByPath = false;

+

+	var material = options.material;

+	var extrudeMaterial = options.extrudeMaterial;

+

+	// Use default WorldUVGenerator if no UV generators are specified.

+	var uvgen = options.UVGenerator !== undefined ? options.UVGenerator : THREE.ExtrudeGeometry.WorldUVGenerator;

+

+	var shapebb = this.shapebb;

+	//shapebb = shape.getBoundingBox();

+

+

+

+	var splineTube, binormal, normal, position2;

+	if ( extrudePath ) {

+

+		extrudePts = extrudePath.getSpacedPoints( steps );

+

+		extrudeByPath = true;

+		bevelEnabled = false; // bevels not supported for path extrusion

+

+		// SETUP TNB variables

+

+		// Reuse TNB from TubeGeomtry for now.

+		// TODO1 - have a .isClosed in spline?

+

+		splineTube = options.frames !== undefined ? options.frames : new THREE.TubeGeometry.FrenetFrames(extrudePath, steps, false);

+

+		// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);

+

+		binormal = new THREE.Vector3();

+		normal = new THREE.Vector3();

+		position2 = new THREE.Vector3();

+

+	}

+

+	// Safeguards if bevels are not enabled

+

+	if ( ! bevelEnabled ) {

+

+		bevelSegments = 0;

+		bevelThickness = 0;

+		bevelSize = 0;

+

+	}

+

+	// Variables initalization

+

+	var ahole, h, hl; // looping of holes

+	var scope = this;

+	var bevelPoints = [];

+

+	var shapesOffset = this.vertices.length;

+

+	var shapePoints = shape.extractPoints( curveSegments );

+

+	var vertices = shapePoints.shape;

+	var holes = shapePoints.holes;

+

+	var reverse = !THREE.Shape.Utils.isClockWise( vertices ) ;

+

+	if ( reverse ) {

+

+		vertices = vertices.reverse();

+

+		// Maybe we should also check if holes are in the opposite direction, just to be safe ...

+

+		for ( h = 0, hl = holes.length; h < hl; h ++ ) {

+

+			ahole = holes[ h ];

+

+			if ( THREE.Shape.Utils.isClockWise( ahole ) ) {

+

+				holes[ h ] = ahole.reverse();

+

+			}

+

+		}

+

+		reverse = false; // If vertices are in order now, we shouldn't need to worry about them again (hopefully)!

+

+	}

+

+

+	var faces = THREE.Shape.Utils.triangulateShape ( vertices, holes );

+

+	/* Vertices */

+

+	var contour = vertices; // vertices has all points but contour has only points of circumference

+

+	for ( h = 0, hl = holes.length;  h < hl; h ++ ) {

+

+		ahole = holes[ h ];

+

+		vertices = vertices.concat( ahole );

+

+	}

+

+

+	function scalePt2 ( pt, vec, size ) {

+

+		if ( !vec ) console.log( "die" );

+

+		return vec.clone().multiplyScalar( size ).add( pt );

+

+	}

+

+	var b, bs, t, z,

+		vert, vlen = vertices.length,

+		face, flen = faces.length,

+		cont, clen = contour.length;

+

+

+	// Find directions for point movement

+

+	var RAD_TO_DEGREES = 180 / Math.PI;

+

+

+	function getBevelVec( pt_i, pt_j, pt_k ) {

+

+		// Algorithm 2

+

+		return getBevelVec2( pt_i, pt_j, pt_k );

+

+	}

+

+	function getBevelVec1( pt_i, pt_j, pt_k ) {

+

+		var anglea = Math.atan2( pt_j.y - pt_i.y, pt_j.x - pt_i.x );

+		var angleb = Math.atan2( pt_k.y - pt_i.y, pt_k.x - pt_i.x );

+

+		if ( anglea > angleb ) {

+

+			angleb += Math.PI * 2;

+

+		}

+

+		var anglec = ( anglea + angleb ) / 2;

+

+

+		//console.log('angle1', anglea * RAD_TO_DEGREES,'angle2', angleb * RAD_TO_DEGREES, 'anglec', anglec *RAD_TO_DEGREES);

+

+		var x = - Math.cos( anglec );

+		var y = - Math.sin( anglec );

+

+		var vec = new THREE.Vector2( x, y ); //.normalize();

+

+		return vec;

+

+	}

+

+	function getBevelVec2( pt_i, pt_j, pt_k ) {

+

+		var a = THREE.ExtrudeGeometry.__v1,

+			b = THREE.ExtrudeGeometry.__v2,

+			v_hat = THREE.ExtrudeGeometry.__v3,

+			w_hat = THREE.ExtrudeGeometry.__v4,

+			p = THREE.ExtrudeGeometry.__v5,

+			q = THREE.ExtrudeGeometry.__v6,

+			v, w,

+			v_dot_w_hat, q_sub_p_dot_w_hat,

+			s, intersection;

+

+		// good reading for line-line intersection

+		// http://sputsoft.com/blog/2010/03/line-line-intersection.html

+

+		// define a as vector j->i

+		// define b as vectot k->i

+

+		a.set( pt_i.x - pt_j.x, pt_i.y - pt_j.y );

+		b.set( pt_i.x - pt_k.x, pt_i.y - pt_k.y );

+

+		// get unit vectors

+

+		v = a.normalize();

+		w = b.normalize();

+

+		// normals from pt i

+

+		v_hat.set( -v.y, v.x );

+		w_hat.set( w.y, -w.x );

+

+		// pts from i

+

+		p.copy( pt_i ).add( v_hat );

+		q.copy( pt_i ).add( w_hat );

+

+		if ( p.equals( q ) ) {

+

+			//console.log("Warning: lines are straight");

+			return w_hat.clone();

+

+		}

+

+		// Points from j, k. helps prevents points cross overover most of the time

+

+		p.copy( pt_j ).add( v_hat );

+		q.copy( pt_k ).add( w_hat );

+

+		v_dot_w_hat = v.dot( w_hat );

+		q_sub_p_dot_w_hat = q.sub( p ).dot( w_hat );

+

+		// We should not reach these conditions

+

+		if ( v_dot_w_hat === 0 ) {

+

+			console.log( "Either infinite or no solutions!" );

+

+			if ( q_sub_p_dot_w_hat === 0 ) {

+

+				console.log( "Its finite solutions." );

+

+			} else {

+

+				console.log( "Too bad, no solutions." );

+

+			}

+

+		}

+

+		s = q_sub_p_dot_w_hat / v_dot_w_hat;

+

+		if ( s < 0 ) {

+

+			// in case of emergecy, revert to algorithm 1.

+

+			return getBevelVec1( pt_i, pt_j, pt_k );

+

+		}

+

+		intersection = v.multiplyScalar( s ).add( p );

+

+		return intersection.sub( pt_i ).clone(); // Don't normalize!, otherwise sharp corners become ugly

+

+	}

+

+	var contourMovements = [];

+

+	for ( var i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

+

+		if ( j === il ) j = 0;

+		if ( k === il ) k = 0;

+

+		//  (j)---(i)---(k)

+		// console.log('i,j,k', i, j , k)

+

+		var pt_i = contour[ i ];

+		var pt_j = contour[ j ];

+		var pt_k = contour[ k ];

+

+		contourMovements[ i ]= getBevelVec( contour[ i ], contour[ j ], contour[ k ] );

+

+	}

+

+	var holesMovements = [], oneHoleMovements, verticesMovements = contourMovements.concat();

+

+	for ( h = 0, hl = holes.length; h < hl; h ++ ) {

+

+		ahole = holes[ h ];

+

+		oneHoleMovements = [];

+

+		for ( i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

+

+			if ( j === il ) j = 0;

+			if ( k === il ) k = 0;

+

+			//  (j)---(i)---(k)

+			oneHoleMovements[ i ]= getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );

+

+		}

+

+		holesMovements.push( oneHoleMovements );

+		verticesMovements = verticesMovements.concat( oneHoleMovements );

+

+	}

+

+

+	// Loop bevelSegments, 1 for the front, 1 for the back

+

+	for ( b = 0; b < bevelSegments; b ++ ) {

+	//for ( b = bevelSegments; b > 0; b -- ) {

+

+		t = b / bevelSegments;

+		z = bevelThickness * ( 1 - t );

+

+		//z = bevelThickness * t;

+		bs = bevelSize * ( Math.sin ( t * Math.PI/2 ) ) ; // curved

+		//bs = bevelSize * t ; // linear

+

+		// contract shape

+

+		for ( i = 0, il = contour.length; i < il; i ++ ) {

+

+			vert = scalePt2( contour[ i ], contourMovements[ i ], bs );

+			//vert = scalePt( contour[ i ], contourCentroid, bs, false );

+			v( vert.x, vert.y,  - z );

+

+		}

+

+		// expand holes

+

+		for ( h = 0, hl = holes.length; h < hl; h++ ) {

+

+			ahole = holes[ h ];

+			oneHoleMovements = holesMovements[ h ];

+

+			for ( i = 0, il = ahole.length; i < il; i++ ) {

+

+				vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

+				//vert = scalePt( ahole[ i ], holesCentroids[ h ], bs, true );

+

+				v( vert.x, vert.y,  -z );

+

+			}

+

+		}

+

+	}

+

+	bs = bevelSize;

+

+	// Back facing vertices

+

+	for ( i = 0; i < vlen; i ++ ) {

+

+		vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

+

+		if ( !extrudeByPath ) {

+

+			v( vert.x, vert.y, 0 );

+

+		} else {

+

+			// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );

+

+			normal.copy( splineTube.normals[0] ).multiplyScalar(vert.x);

+			binormal.copy( splineTube.binormals[0] ).multiplyScalar(vert.y);

+

+			position2.copy( extrudePts[0] ).add(normal).add(binormal);

+

+			v( position2.x, position2.y, position2.z );

+

+		}

+

+	}

+

+	// Add stepped vertices...

+	// Including front facing vertices

+

+	var s;

+

+	for ( s = 1; s <= steps; s ++ ) {

+

+		for ( i = 0; i < vlen; i ++ ) {

+

+			vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

+

+			if ( !extrudeByPath ) {

+

+				v( vert.x, vert.y, amount / steps * s );

+

+			} else {

+

+				// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );

+

+				normal.copy( splineTube.normals[s] ).multiplyScalar( vert.x );

+				binormal.copy( splineTube.binormals[s] ).multiplyScalar( vert.y );

+

+				position2.copy( extrudePts[s] ).add( normal ).add( binormal );

+

+				v( position2.x, position2.y, position2.z );

+

+			}

+

+		}

+

+	}

+

+

+	// Add bevel segments planes

+

+	//for ( b = 1; b <= bevelSegments; b ++ ) {

+	for ( b = bevelSegments - 1; b >= 0; b -- ) {

+

+		t = b / bevelSegments;

+		z = bevelThickness * ( 1 - t );

+		//bs = bevelSize * ( 1-Math.sin ( ( 1 - t ) * Math.PI/2 ) );

+		bs = bevelSize * Math.sin ( t * Math.PI/2 ) ;

+

+		// contract shape

+

+		for ( i = 0, il = contour.length; i < il; i ++ ) {

+

+			vert = scalePt2( contour[ i ], contourMovements[ i ], bs );

+			v( vert.x, vert.y,  amount + z );

+

+		}

+

+		// expand holes

+

+		for ( h = 0, hl = holes.length; h < hl; h ++ ) {

+

+			ahole = holes[ h ];

+			oneHoleMovements = holesMovements[ h ];

+

+			for ( i = 0, il = ahole.length; i < il; i ++ ) {

+

+				vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

+

+				if ( !extrudeByPath ) {

+

+					v( vert.x, vert.y,  amount + z );

+

+				} else {

+

+					v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );

+

+				}

+

+			}

+

+		}

+

+	}

+

+	/* Faces */

+

+	// Top and bottom faces

+

+	buildLidFaces();

+

+	// Sides faces

+

+	buildSideFaces();

+

+

+	/////  Internal functions

+

+	function buildLidFaces() {

+

+		if ( bevelEnabled ) {

+

+			var layer = 0 ; // steps + 1

+			var offset = vlen * layer;

+

+			// Bottom faces

+

+			for ( i = 0; i < flen; i ++ ) {

+

+				face = faces[ i ];

+				f3( face[ 2 ]+ offset, face[ 1 ]+ offset, face[ 0 ] + offset, true );

+

+			}

+

+			layer = steps + bevelSegments * 2;

+			offset = vlen * layer;

+

+			// Top faces

+

+			for ( i = 0; i < flen; i ++ ) {

+

+				face = faces[ i ];

+				f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset, false );

+

+			}

+

+		} else {

+

+			// Bottom faces

+

+			for ( i = 0; i < flen; i++ ) {

+

+				face = faces[ i ];

+				f3( face[ 2 ], face[ 1 ], face[ 0 ], true );

+

+			}

+

+			// Top faces

+

+			for ( i = 0; i < flen; i ++ ) {

+

+				face = faces[ i ];

+				f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps, false );

+

+			}

+		}

+

+	}

+

+	// Create faces for the z-sides of the shape

+

+	function buildSideFaces() {

+

+		var layeroffset = 0;

+		sidewalls( contour, layeroffset );

+		layeroffset += contour.length;

+

+		for ( h = 0, hl = holes.length;  h < hl; h ++ ) {

+

+			ahole = holes[ h ];

+			sidewalls( ahole, layeroffset );

+

+			//, true

+			layeroffset += ahole.length;

+

+		}

+

+	}

+

+	function sidewalls( contour, layeroffset ) {

+

+		var j, k;

+		i = contour.length;

+

+		while ( --i >= 0 ) {

+

+			j = i;

+			k = i - 1;

+			if ( k < 0 ) k = contour.length - 1;

+

+			//console.log('b', i,j, i-1, k,vertices.length);

+

+			var s = 0, sl = steps  + bevelSegments * 2;

+

+			for ( s = 0; s < sl; s ++ ) {

+

+				var slen1 = vlen * s;

+				var slen2 = vlen * ( s + 1 );

+

+				var a = layeroffset + j + slen1,

+					b = layeroffset + k + slen1,

+					c = layeroffset + k + slen2,

+					d = layeroffset + j + slen2;

+

+				f4( a, b, c, d, contour, s, sl, j, k );

+

+			}

+		}

+

+	}

+

+

+	function v( x, y, z ) {

+

+		scope.vertices.push( new THREE.Vector3( x, y, z ) );

+

+	}

+

+	function f3( a, b, c, isBottom ) {

+

+		a += shapesOffset;

+		b += shapesOffset;

+		c += shapesOffset;

+

+		// normal, color, material

+		scope.faces.push( new THREE.Face3( a, b, c, null, null, material ) );

+

+		var uvs = isBottom ? uvgen.generateBottomUV( scope, shape, options, a, b, c ) : uvgen.generateTopUV( scope, shape, options, a, b, c );

+

+ 		scope.faceVertexUvs[ 0 ].push( uvs );

+

+	}

+

+	function f4( a, b, c, d, wallContour, stepIndex, stepsLength, contourIndex1, contourIndex2 ) {

+

+		a += shapesOffset;

+		b += shapesOffset;

+		c += shapesOffset;

+		d += shapesOffset;

+

+ 		scope.faces.push( new THREE.Face4( a, b, c, d, null, null, extrudeMaterial ) );

+

+ 		var uvs = uvgen.generateSideWallUV( scope, shape, wallContour, options, a, b, c, d,

+ 		                                    stepIndex, stepsLength, contourIndex1, contourIndex2 );

+ 		scope.faceVertexUvs[ 0 ].push( uvs );

+

+	}

+

+};

+

+THREE.ExtrudeGeometry.WorldUVGenerator = {

+

+	generateTopUV: function( geometry, extrudedShape, extrudeOptions, indexA, indexB, indexC ) {

+		var ax = geometry.vertices[ indexA ].x,

+			ay = geometry.vertices[ indexA ].y,

+

+			bx = geometry.vertices[ indexB ].x,

+			by = geometry.vertices[ indexB ].y,

+

+			cx = geometry.vertices[ indexC ].x,

+			cy = geometry.vertices[ indexC ].y;

+

+		return [

+			new THREE.Vector2( ax, ay ),

+			new THREE.Vector2( bx, by ),

+			new THREE.Vector2( cx, cy )

+		];

+

+	},

+

+	generateBottomUV: function( geometry, extrudedShape, extrudeOptions, indexA, indexB, indexC ) {

+

+		return this.generateTopUV( geometry, extrudedShape, extrudeOptions, indexA, indexB, indexC );

+

+	},

+

+	generateSideWallUV: function( geometry, extrudedShape, wallContour, extrudeOptions,

+	                              indexA, indexB, indexC, indexD, stepIndex, stepsLength,

+	                              contourIndex1, contourIndex2 ) {

+

+		var ax = geometry.vertices[ indexA ].x,

+			ay = geometry.vertices[ indexA ].y,

+			az = geometry.vertices[ indexA ].z,

+

+			bx = geometry.vertices[ indexB ].x,

+			by = geometry.vertices[ indexB ].y,

+			bz = geometry.vertices[ indexB ].z,

+

+			cx = geometry.vertices[ indexC ].x,

+			cy = geometry.vertices[ indexC ].y,

+			cz = geometry.vertices[ indexC ].z,

+

+			dx = geometry.vertices[ indexD ].x,

+			dy = geometry.vertices[ indexD ].y,

+			dz = geometry.vertices[ indexD ].z;

+

+		if ( Math.abs( ay - by ) < 0.01 ) {

+			return [

+				new THREE.Vector2( ax, 1 - az ),

+				new THREE.Vector2( bx, 1 - bz ),

+				new THREE.Vector2( cx, 1 - cz ),

+				new THREE.Vector2( dx, 1 - dz )

+			];

+		} else {

+			return [

+				new THREE.Vector2( ay, 1 - az ),

+				new THREE.Vector2( by, 1 - bz ),

+				new THREE.Vector2( cy, 1 - cz ),

+				new THREE.Vector2( dy, 1 - dz )

+			];

+		}

+	}

+};

+

+THREE.ExtrudeGeometry.__v1 = new THREE.Vector2();

+THREE.ExtrudeGeometry.__v2 = new THREE.Vector2();

+THREE.ExtrudeGeometry.__v3 = new THREE.Vector2();

+THREE.ExtrudeGeometry.__v4 = new THREE.Vector2();

+THREE.ExtrudeGeometry.__v5 = new THREE.Vector2();

+THREE.ExtrudeGeometry.__v6 = new THREE.Vector2();

+/**

+ * @author jonobr1 / http://jonobr1.com

+ *

+ * Creates a one-sided polygonal geometry from a path shape. Similar to

+ * ExtrudeGeometry.

+ *

+ * parameters = {

+ *

+ *	curveSegments: <int>, // number of points on the curves. NOT USED AT THE MOMENT.

+ *

+ *	material: <int> // material index for front and back faces

+ *	uvGenerator: <Object> // object that provides UV generator functions

+ *

+ * }

+ **/

+

+THREE.ShapeGeometry = function ( shapes, options ) {

+

+	THREE.Geometry.call( this );

+

+	if ( shapes instanceof Array === false ) shapes = [ shapes ];

+

+	this.shapebb = shapes[ shapes.length - 1 ].getBoundingBox();

+

+	this.addShapeList( shapes, options );

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+

+};

+

+THREE.ShapeGeometry.prototype = Object.create( THREE.Geometry.prototype );

+

+/**

+ * Add an array of shapes to THREE.ShapeGeometry.

+ */

+THREE.ShapeGeometry.prototype.addShapeList = function ( shapes, options ) {

+

+	for ( var i = 0, l = shapes.length; i < l; i++ ) {

+

+		this.addShape( shapes[ i ], options );

+

+	}

+

+	return this;

+

+};

+

+/**

+ * Adds a shape to THREE.ShapeGeometry, based on THREE.ExtrudeGeometry.

+ */

+THREE.ShapeGeometry.prototype.addShape = function ( shape, options ) {

+

+	if ( options === undefined ) options = {};

+	var curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;

+

+	var material = options.material;

+	var uvgen = options.UVGenerator === undefined ? THREE.ExtrudeGeometry.WorldUVGenerator : options.UVGenerator;

+

+	var shapebb = this.shapebb;

+

+	//

+

+	var i, l, hole, s;

+

+	var shapesOffset = this.vertices.length;

+	var shapePoints = shape.extractPoints( curveSegments );

+

+	var vertices = shapePoints.shape;

+	var holes = shapePoints.holes;

+

+	var reverse = !THREE.Shape.Utils.isClockWise( vertices );

+

+	if ( reverse ) {

+

+		vertices = vertices.reverse();

+

+		// Maybe we should also check if holes are in the opposite direction, just to be safe...

+

+		for ( i = 0, l = holes.length; i < l; i++ ) {

+

+			hole = holes[ i ];

+

+			if ( THREE.Shape.Utils.isClockWise( hole ) ) {

+

+				holes[ i ] = hole.reverse();

+

+			}

+

+		}

+

+		reverse = false;

+

+	}

+

+	var faces = THREE.Shape.Utils.triangulateShape( vertices, holes );

+

+	// Vertices

+

+	var contour = vertices;

+

+	for ( i = 0, l = holes.length; i < l; i++ ) {

+

+		hole = holes[ i ];

+		vertices = vertices.concat( hole );

+

+	}

+

+	//

+

+	var vert, vlen = vertices.length;

+	var face, flen = faces.length;

+	var cont, clen = contour.length;

+

+	for ( i = 0; i < vlen; i++ ) {

+

+		vert = vertices[ i ];

+

+		this.vertices.push( new THREE.Vector3( vert.x, vert.y, 0 ) );

+

+	}

+

+	for ( i = 0; i < flen; i++ ) {

+

+		face = faces[ i ];

+

+		var a = face[ 0 ] + shapesOffset;

+		var b = face[ 1 ] + shapesOffset;

+		var c = face[ 2 ] + shapesOffset;

+

+		this.faces.push( new THREE.Face3( a, b, c, null, null, material ) );

+		this.faceVertexUvs[ 0 ].push( uvgen.generateBottomUV( this, shape, options, a, b, c ) );

+

+	}

+

+};

+/**

+ * @author astrodud / http://astrodud.isgreat.org/

+ * @author zz85 / https://github.com/zz85

+ * @author bhouston / http://exocortex.com

+ */

+

+// points - to create a closed torus, one must use a set of points 

+//    like so: [ a, b, c, d, a ], see first is the same as last.

+// segments - the number of circumference segments to create

+// phiStart - the starting radian

+// phiLength - the radian (0 to 2*PI) range of the lathed section

+//    2*pi is a closed lathe, less than 2PI is a portion.

+THREE.LatheGeometry = function ( points, segments, phiStart, phiLength ) {

+

+	THREE.Geometry.call( this );

+

+	segments = segments || 12;

+	phiStart = phiStart || 0;

+	phiLength = phiLength || 2 * Math.PI;

+

+	var inversePointLength = 1.0 / ( points.length - 1 );

+	var inverseSegments = 1.0 / segments;

+

+	for ( var i = 0, il = segments; i <= il; i ++ ) {

+

+		var phi = phiStart + i * inverseSegments * phiLength;

+

+		var c = Math.cos( phi ),

+			s = Math.sin( phi );

+

+		for ( var j = 0, jl = points.length; j < jl; j ++ ) {

+

+			var pt = points[ j ];

+

+			var vertex = new THREE.Vector3();

+

+			vertex.x = c * pt.x - s * pt.y;

+			vertex.y = s * pt.x + c * pt.y;

+			vertex.z = pt.z;

+

+			this.vertices.push( vertex );

+

+		}

+

+	}

+

+	var np = points.length;

+

+	for ( var i = 0, il = segments; i < il; i ++ ) {

+

+		for ( var j = 0, jl = points.length - 1; j < jl; j ++ ) {

+

+			var base = j + np * i;

+			var a = base;

+			var b = base + np;

+			var c = base + 1 + np;

+			var d = base + 1;

+

+			this.faces.push( new THREE.Face4( a, b, c, d ) );

+

+			var u0 = i * inverseSegments;

+			var v0 = j * inversePointLength;

+			var u1 = u0 + inverseSegments;

+			var v1 = v0 + inversePointLength;

+

+			this.faceVertexUvs[ 0 ].push( [

+

+				new THREE.Vector2( u0, v0 ), 

+				new THREE.Vector2( u1, v0 ),

+				new THREE.Vector2( u1, v1 ),

+				new THREE.Vector2( u0, v1 )

+

+			] );

+

+		}

+

+	}

+

+	this.mergeVertices();

+	this.computeCentroids();

+	this.computeFaceNormals();

+	this.computeVertexNormals();

+

+};

+

+THREE.LatheGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ * based on http://papervision3d.googlecode.com/svn/trunk/as3/trunk/src/org/papervision3d/objects/primitives/Plane.as

+ */

+

+THREE.PlaneGeometry = function ( width, height, widthSegments, heightSegments ) {

+

+	THREE.Geometry.call( this );

+

+	this.width = width;

+	this.height = height;

+

+	this.widthSegments = widthSegments || 1;

+	this.heightSegments = heightSegments || 1;

+

+	var ix, iz;

+	var width_half = width / 2;

+	var height_half = height / 2;

+

+	var gridX = this.widthSegments;

+	var gridZ = this.heightSegments;

+

+	var gridX1 = gridX + 1;

+	var gridZ1 = gridZ + 1;

+

+	var segment_width = this.width / gridX;

+	var segment_height = this.height / gridZ;

+

+	var normal = new THREE.Vector3( 0, 0, 1 );

+

+	for ( iz = 0; iz < gridZ1; iz ++ ) {

+

+		for ( ix = 0; ix < gridX1; ix ++ ) {

+

+			var x = ix * segment_width - width_half;

+			var y = iz * segment_height - height_half;

+

+			this.vertices.push( new THREE.Vector3( x, - y, 0 ) );

+

+		}

+

+	}

+

+	for ( iz = 0; iz < gridZ; iz ++ ) {

+

+		for ( ix = 0; ix < gridX; ix ++ ) {

+

+			var a = ix + gridX1 * iz;

+			var b = ix + gridX1 * ( iz + 1 );

+			var c = ( ix + 1 ) + gridX1 * ( iz + 1 );

+			var d = ( ix + 1 ) + gridX1 * iz;

+

+			var face = new THREE.Face4( a, b, c, d );

+			face.normal.copy( normal );

+			face.vertexNormals.push( normal.clone(), normal.clone(), normal.clone(), normal.clone() );

+

+			this.faces.push( face );

+			this.faceVertexUvs[ 0 ].push( [

+				new THREE.Vector2( ix / gridX, 1 - iz / gridZ ),

+				new THREE.Vector2( ix / gridX, 1 - ( iz + 1 ) / gridZ ),

+				new THREE.Vector2( ( ix + 1 ) / gridX, 1 - ( iz + 1 ) / gridZ ),

+				new THREE.Vector2( ( ix + 1 ) / gridX, 1 - iz / gridZ )

+			] );

+

+		}

+

+	}

+

+	this.computeCentroids();

+

+};

+

+THREE.PlaneGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.SphereGeometry = function ( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {

+

+	THREE.Geometry.call( this );

+

+	this.radius = radius || 50;

+

+	this.widthSegments = Math.max( 3, Math.floor( widthSegments ) || 8 );

+	this.heightSegments = Math.max( 2, Math.floor( heightSegments ) || 6 );

+

+	phiStart = phiStart !== undefined ? phiStart : 0;

+	phiLength = phiLength !== undefined ? phiLength : Math.PI * 2;

+

+	thetaStart = thetaStart !== undefined ? thetaStart : 0;

+	thetaLength = thetaLength !== undefined ? thetaLength : Math.PI;

+

+	var x, y, vertices = [], uvs = [];

+

+	for ( y = 0; y <= this.heightSegments; y ++ ) {

+

+		var verticesRow = [];

+		var uvsRow = [];

+

+		for ( x = 0; x <= this.widthSegments; x ++ ) {

+

+			var u = x / this.widthSegments;

+			var v = y / this.heightSegments;

+

+			var vertex = new THREE.Vector3();

+			vertex.x = - this.radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );

+			vertex.y = this.radius * Math.cos( thetaStart + v * thetaLength );

+			vertex.z = this.radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );

+

+			this.vertices.push( vertex );

+

+			verticesRow.push( this.vertices.length - 1 );

+			uvsRow.push( new THREE.Vector2( u, 1 - v ) );

+

+		}

+

+		vertices.push( verticesRow );

+		uvs.push( uvsRow );

+

+	}

+

+	for ( y = 0; y < this.heightSegments; y ++ ) {

+

+		for ( x = 0; x < this.widthSegments; x ++ ) {

+

+			var v1 = vertices[ y ][ x + 1 ];

+			var v2 = vertices[ y ][ x ];

+			var v3 = vertices[ y + 1 ][ x ];

+			var v4 = vertices[ y + 1 ][ x + 1 ];

+

+			var n1 = this.vertices[ v1 ].clone().normalize();

+			var n2 = this.vertices[ v2 ].clone().normalize();

+			var n3 = this.vertices[ v3 ].clone().normalize();

+			var n4 = this.vertices[ v4 ].clone().normalize();

+

+			var uv1 = uvs[ y ][ x + 1 ].clone();

+			var uv2 = uvs[ y ][ x ].clone();

+			var uv3 = uvs[ y + 1 ][ x ].clone();

+			var uv4 = uvs[ y + 1 ][ x + 1 ].clone();

+

+			if ( Math.abs( this.vertices[ v1 ].y ) === this.radius ) {

+

+				this.faces.push( new THREE.Face3( v1, v3, v4, [ n1, n3, n4 ] ) );

+				this.faceVertexUvs[ 0 ].push( [ uv1, uv3, uv4 ] );

+

+			} else if ( Math.abs( this.vertices[ v3 ].y ) === this.radius ) {

+

+				this.faces.push( new THREE.Face3( v1, v2, v3, [ n1, n2, n3 ] ) );

+				this.faceVertexUvs[ 0 ].push( [ uv1, uv2, uv3 ] );

+

+			} else {

+

+				this.faces.push( new THREE.Face4( v1, v2, v3, v4, [ n1, n2, n3, n4 ] ) );

+				this.faceVertexUvs[ 0 ].push( [ uv1, uv2, uv3, uv4 ] );

+

+			}

+

+		}

+

+	}

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+

+    this.boundingSphere = new THREE.Sphere( new THREE.Vector3(), radius );

+

+};

+

+THREE.SphereGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author zz85 / http://www.lab4games.net/zz85/blog

+ * @author alteredq / http://alteredqualia.com/

+ *

+ * For creating 3D text geometry in three.js

+ *

+ * Text = 3D Text

+ *

+ * parameters = {

+ *  size: 			<float>, 	// size of the text

+ *  height: 		<float>, 	// thickness to extrude text

+ *  curveSegments: 	<int>,		// number of points on the curves

+ *

+ *  font: 			<string>,		// font name

+ *  weight: 		<string>,		// font weight (normal, bold)

+ *  style: 			<string>,		// font style  (normal, italics)

+ *

+ *  bevelEnabled:	<bool>,			// turn on bevel

+ *  bevelThickness: <float>, 		// how deep into text bevel goes

+ *  bevelSize:		<float>, 		// how far from text outline is bevel

+ *  }

+ *

+ */

+

+/*	Usage Examples

+

+	// TextGeometry wrapper

+

+	var text3d = new TextGeometry( text, options );

+

+	// Complete manner

+

+	var textShapes = THREE.FontUtils.generateShapes( text, options );

+	var text3d = new ExtrudeGeometry( textShapes, options );

+

+*/

+

+

+THREE.TextGeometry = function ( text, parameters ) {

+

+	var textShapes = THREE.FontUtils.generateShapes( text, parameters );

+

+	// translate parameters to ExtrudeGeometry API

+

+	parameters.amount = parameters.height !== undefined ? parameters.height : 50;

+

+	// defaults

+

+	if ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;

+	if ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;

+	if ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;

+

+	THREE.ExtrudeGeometry.call( this, textShapes, parameters );

+

+};

+

+THREE.TextGeometry.prototype = Object.create( THREE.ExtrudeGeometry.prototype );

+/**

+ * @author oosmoxiecode

+ * @author mrdoob / http://mrdoob.com/

+ * based on http://code.google.com/p/away3d/source/browse/trunk/fp10/Away3DLite/src/away3dlite/primitives/Torus.as?r=2888

+ */

+

+THREE.TorusGeometry = function ( radius, tube, radialSegments, tubularSegments, arc ) {

+

+	THREE.Geometry.call( this );

+

+	var scope = this;

+

+	this.radius = radius || 100;

+	this.tube = tube || 40;

+	this.radialSegments = radialSegments || 8;

+	this.tubularSegments = tubularSegments || 6;

+	this.arc = arc || Math.PI * 2;

+

+	var center = new THREE.Vector3(), uvs = [], normals = [];

+

+	for ( var j = 0; j <= this.radialSegments; j ++ ) {

+

+		for ( var i = 0; i <= this.tubularSegments; i ++ ) {

+

+			var u = i / this.tubularSegments * this.arc;

+			var v = j / this.radialSegments * Math.PI * 2;

+

+			center.x = this.radius * Math.cos( u );

+			center.y = this.radius * Math.sin( u );

+

+			var vertex = new THREE.Vector3();

+			vertex.x = ( this.radius + this.tube * Math.cos( v ) ) * Math.cos( u );

+			vertex.y = ( this.radius + this.tube * Math.cos( v ) ) * Math.sin( u );

+			vertex.z = this.tube * Math.sin( v );

+

+			this.vertices.push( vertex );

+

+			uvs.push( new THREE.Vector2( i / this.tubularSegments, j / this.radialSegments ) );

+			normals.push( vertex.clone().sub( center ).normalize() );

+

+		}

+	}

+

+

+	for ( var j = 1; j <= this.radialSegments; j ++ ) {

+

+		for ( var i = 1; i <= this.tubularSegments; i ++ ) {

+

+			var a = ( this.tubularSegments + 1 ) * j + i - 1;

+			var b = ( this.tubularSegments + 1 ) * ( j - 1 ) + i - 1;

+			var c = ( this.tubularSegments + 1 ) * ( j - 1 ) + i;

+			var d = ( this.tubularSegments + 1 ) * j + i;

+

+			var face = new THREE.Face4( a, b, c, d, [ normals[ a ], normals[ b ], normals[ c ], normals[ d ] ] );

+			face.normal.add( normals[ a ] );

+			face.normal.add( normals[ b ] );

+			face.normal.add( normals[ c ] );

+			face.normal.add( normals[ d ] );

+			face.normal.normalize();

+

+			this.faces.push( face );

+

+			this.faceVertexUvs[ 0 ].push( [ uvs[ a ].clone(), uvs[ b ].clone(), uvs[ c ].clone(), uvs[ d ].clone() ] );

+		}

+

+	}

+

+	this.computeCentroids();

+

+};

+

+THREE.TorusGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author oosmoxiecode

+ * based on http://code.google.com/p/away3d/source/browse/trunk/fp10/Away3D/src/away3d/primitives/TorusKnot.as?spec=svn2473&r=2473

+ */

+

+THREE.TorusKnotGeometry = function ( radius, tube, radialSegments, tubularSegments, p, q, heightScale ) {

+

+	THREE.Geometry.call( this );

+

+	var scope = this;

+

+	this.radius = radius || 100;

+	this.tube = tube || 40;

+	this.radialSegments = radialSegments || 64;

+	this.tubularSegments = tubularSegments || 8;

+	this.p = p || 2;

+	this.q = q || 3;

+	this.heightScale = heightScale || 1;

+	this.grid = new Array( this.radialSegments );

+

+	var tang = new THREE.Vector3();

+	var n = new THREE.Vector3();

+	var bitan = new THREE.Vector3();

+

+	for ( var i = 0; i < this.radialSegments; ++ i ) {

+

+		this.grid[ i ] = new Array( this.tubularSegments );

+

+		for ( var j = 0; j < this.tubularSegments; ++ j ) {

+

+			var u = i / this.radialSegments * 2 * this.p * Math.PI;

+			var v = j / this.tubularSegments * 2 * Math.PI;

+			var p1 = getPos( u, v, this.q, this.p, this.radius, this.heightScale );

+			var p2 = getPos( u + 0.01, v, this.q, this.p, this.radius, this.heightScale );

+			var cx, cy;

+

+			tang.subVectors( p2, p1 );

+			n.addVectors( p2, p1 );

+

+			bitan.crossVectors( tang, n );

+			n.crossVectors( bitan, tang );

+			bitan.normalize();

+			n.normalize();

+

+			cx = - this.tube * Math.cos( v ); // TODO: Hack: Negating it so it faces outside.

+			cy = this.tube * Math.sin( v );

+

+			p1.x += cx * n.x + cy * bitan.x;

+			p1.y += cx * n.y + cy * bitan.y;

+			p1.z += cx * n.z + cy * bitan.z;

+

+			this.grid[ i ][ j ] = vert( p1.x, p1.y, p1.z );

+

+		}

+

+	}

+

+	for ( var i = 0; i < this.radialSegments; ++ i ) {

+

+		for ( var j = 0; j < this.tubularSegments; ++ j ) {

+

+			var ip = ( i + 1 ) % this.radialSegments;

+			var jp = ( j + 1 ) % this.tubularSegments;

+

+			var a = this.grid[ i ][ j ];

+			var b = this.grid[ ip ][ j ];

+			var c = this.grid[ ip ][ jp ];

+			var d = this.grid[ i ][ jp ];

+

+			var uva = new THREE.Vector2( i / this.radialSegments, j / this.tubularSegments );

+			var uvb = new THREE.Vector2( ( i + 1 ) / this.radialSegments, j / this.tubularSegments );

+			var uvc = new THREE.Vector2( ( i + 1 ) / this.radialSegments, ( j + 1 ) / this.tubularSegments );

+			var uvd = new THREE.Vector2( i / this.radialSegments, ( j + 1 ) / this.tubularSegments );

+

+			this.faces.push( new THREE.Face4( a, b, c, d ) );

+			this.faceVertexUvs[ 0 ].push( [ uva,uvb,uvc, uvd ] );

+

+		}

+	}

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+	this.computeVertexNormals();

+

+	function vert( x, y, z ) {

+

+		return scope.vertices.push( new THREE.Vector3( x, y, z ) ) - 1;

+

+	}

+

+	function getPos( u, v, in_q, in_p, radius, heightScale ) {

+

+		var cu = Math.cos( u );

+		var cv = Math.cos( v );

+		var su = Math.sin( u );

+		var quOverP = in_q / in_p * u;

+		var cs = Math.cos( quOverP );

+

+		var tx = radius * ( 2 + cs ) * 0.5 * cu;

+		var ty = radius * ( 2 + cs ) * su * 0.5;

+		var tz = heightScale * radius * Math.sin( quOverP ) * 0.5;

+

+		return new THREE.Vector3( tx, ty, tz );

+

+	}

+

+};

+

+THREE.TorusKnotGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author WestLangley / https://github.com/WestLangley

+ * @author zz85 / https://github.com/zz85

+ * @author miningold / https://github.com/miningold

+ *

+ * Modified from the TorusKnotGeometry by @oosmoxiecode

+ *

+ * Creates a tube which extrudes along a 3d spline

+ *

+ * Uses parallel transport frames as described in

+ * http://www.cs.indiana.edu/pub/techreports/TR425.pdf

+ */

+

+THREE.TubeGeometry = function( path, segments, radius, radiusSegments, closed, debug ) {

+

+	THREE.Geometry.call( this );

+

+	this.path = path;

+	this.segments = segments || 64;

+	this.radius = radius || 1;

+	this.radiusSegments = radiusSegments || 8;

+	this.closed = closed || false;

+

+	if ( debug ) this.debug = new THREE.Object3D();

+

+	this.grid = [];

+

+	var scope = this,

+

+		tangent,

+		normal,

+		binormal,

+

+		numpoints = this.segments + 1,

+

+		x, y, z,

+		tx, ty, tz,

+		u, v,

+

+		cx, cy,

+		pos, pos2 = new THREE.Vector3(),

+		i, j,

+		ip, jp,

+		a, b, c, d,

+		uva, uvb, uvc, uvd;

+

+	var frames = new THREE.TubeGeometry.FrenetFrames( this.path, this.segments, this.closed ),

+		tangents = frames.tangents,

+		normals = frames.normals,

+		binormals = frames.binormals;

+

+	// proxy internals

+	this.tangents = tangents;

+	this.normals = normals;

+	this.binormals = binormals;

+

+	function vert( x, y, z ) {

+

+		return scope.vertices.push( new THREE.Vector3( x, y, z ) ) - 1;

+

+	}

+

+

+	// consruct the grid

+

+	for ( i = 0; i < numpoints; i++ ) {

+

+		this.grid[ i ] = [];

+

+		u = i / ( numpoints - 1 );

+

+		pos = path.getPointAt( u );

+

+		tangent = tangents[ i ];

+		normal = normals[ i ];

+		binormal = binormals[ i ];

+

+		if ( this.debug ) {

+

+			this.debug.add( new THREE.ArrowHelper(tangent, pos, radius, 0x0000ff ) );

+			this.debug.add( new THREE.ArrowHelper(normal, pos, radius, 0xff0000 ) );

+			this.debug.add( new THREE.ArrowHelper(binormal, pos, radius, 0x00ff00 ) );

+

+		}

+

+		for ( j = 0; j < this.radiusSegments; j++ ) {

+

+			v = j / this.radiusSegments * 2 * Math.PI;

+

+			cx = -this.radius * Math.cos( v ); // TODO: Hack: Negating it so it faces outside.

+			cy = this.radius * Math.sin( v );

+

+			pos2.copy( pos );

+			pos2.x += cx * normal.x + cy * binormal.x;

+			pos2.y += cx * normal.y + cy * binormal.y;

+			pos2.z += cx * normal.z + cy * binormal.z;

+

+			this.grid[ i ][ j ] = vert( pos2.x, pos2.y, pos2.z );

+

+		}

+	}

+

+

+	// construct the mesh

+

+	for ( i = 0; i < this.segments; i++ ) {

+

+		for ( j = 0; j < this.radiusSegments; j++ ) {

+

+			ip = ( this.closed ) ? (i + 1) % this.segments : i + 1;

+			jp = (j + 1) % this.radiusSegments;

+

+			a = this.grid[ i ][ j ];		// *** NOT NECESSARILY PLANAR ! ***

+			b = this.grid[ ip ][ j ];

+			c = this.grid[ ip ][ jp ];

+			d = this.grid[ i ][ jp ];

+

+			uva = new THREE.Vector2( i / this.segments, j / this.radiusSegments );

+			uvb = new THREE.Vector2( ( i + 1 ) / this.segments, j / this.radiusSegments );

+			uvc = new THREE.Vector2( ( i + 1 ) / this.segments, ( j + 1 ) / this.radiusSegments );

+			uvd = new THREE.Vector2( i / this.segments, ( j + 1 ) / this.radiusSegments );

+

+			this.faces.push( new THREE.Face4( a, b, c, d ) );

+			this.faceVertexUvs[ 0 ].push( [ uva, uvb, uvc, uvd ] );

+

+		}

+	}

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+	this.computeVertexNormals();

+

+};

+

+THREE.TubeGeometry.prototype = Object.create( THREE.Geometry.prototype );

+

+

+// For computing of Frenet frames, exposing the tangents, normals and binormals the spline

+THREE.TubeGeometry.FrenetFrames = function(path, segments, closed) {

+

+	var	tangent = new THREE.Vector3(),

+		normal = new THREE.Vector3(),

+		binormal = new THREE.Vector3(),

+

+		tangents = [],

+		normals = [],

+		binormals = [],

+

+		vec = new THREE.Vector3(),

+		mat = new THREE.Matrix4(),

+

+		numpoints = segments + 1,

+		theta,

+		epsilon = 0.0001,

+		smallest,

+

+		tx, ty, tz,

+		i, u, v;

+

+

+	// expose internals

+	this.tangents = tangents;

+	this.normals = normals;

+	this.binormals = binormals;

+

+	// compute the tangent vectors for each segment on the path

+

+	for ( i = 0; i < numpoints; i++ ) {

+

+		u = i / ( numpoints - 1 );

+

+		tangents[ i ] = path.getTangentAt( u );

+		tangents[ i ].normalize();

+

+	}

+

+	initialNormal3();

+

+	function initialNormal1(lastBinormal) {

+		// fixed start binormal. Has dangers of 0 vectors

+		normals[ 0 ] = new THREE.Vector3();

+		binormals[ 0 ] = new THREE.Vector3();

+		if (lastBinormal===undefined) lastBinormal = new THREE.Vector3( 0, 0, 1 );

+		normals[ 0 ].crossVectors( lastBinormal, tangents[ 0 ] ).normalize();

+		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] ).normalize();

+	}

+

+	function initialNormal2() {

+

+		// This uses the Frenet-Serret formula for deriving binormal

+		var t2 = path.getTangentAt( epsilon );

+

+		normals[ 0 ] = new THREE.Vector3().subVectors( t2, tangents[ 0 ] ).normalize();

+		binormals[ 0 ] = new THREE.Vector3().crossVectors( tangents[ 0 ], normals[ 0 ] );

+

+		normals[ 0 ].crossVectors( binormals[ 0 ], tangents[ 0 ] ).normalize(); // last binormal x tangent

+		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] ).normalize();

+

+	}

+

+	function initialNormal3() {

+		// select an initial normal vector perpenicular to the first tangent vector,

+		// and in the direction of the smallest tangent xyz component

+

+		normals[ 0 ] = new THREE.Vector3();

+		binormals[ 0 ] = new THREE.Vector3();

+		smallest = Number.MAX_VALUE;

+		tx = Math.abs( tangents[ 0 ].x );

+		ty = Math.abs( tangents[ 0 ].y );

+		tz = Math.abs( tangents[ 0 ].z );

+

+		if ( tx <= smallest ) {

+			smallest = tx;

+			normal.set( 1, 0, 0 );

+		}

+

+		if ( ty <= smallest ) {

+			smallest = ty;

+			normal.set( 0, 1, 0 );

+		}

+

+		if ( tz <= smallest ) {

+			normal.set( 0, 0, 1 );

+		}

+

+		vec.crossVectors( tangents[ 0 ], normal ).normalize();

+

+		normals[ 0 ].crossVectors( tangents[ 0 ], vec );

+		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );

+	}

+

+

+	// compute the slowly-varying normal and binormal vectors for each segment on the path

+

+	for ( i = 1; i < numpoints; i++ ) {

+

+		normals[ i ] = normals[ i-1 ].clone();

+

+		binormals[ i ] = binormals[ i-1 ].clone();

+

+		vec.crossVectors( tangents[ i-1 ], tangents[ i ] );

+

+		if ( vec.length() > epsilon ) {

+

+			vec.normalize();

+

+			theta = Math.acos( tangents[ i-1 ].dot( tangents[ i ] ) );

+

+			normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );

+

+		}

+

+		binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

+

+	}

+

+

+	// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same

+

+	if ( closed ) {

+

+		theta = Math.acos( normals[ 0 ].dot( normals[ numpoints-1 ] ) );

+		theta /= ( numpoints - 1 );

+

+		if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ numpoints-1 ] ) ) > 0 ) {

+

+			theta = -theta;

+

+		}

+

+		for ( i = 1; i < numpoints; i++ ) {

+

+			// twist a little...

+			normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );

+			binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

+

+		}

+

+	}

+};

+/**

+ * @author clockworkgeek / https://github.com/clockworkgeek

+ * @author timothypratley / https://github.com/timothypratley

+ */

+

+THREE.PolyhedronGeometry = function ( vertices, faces, radius, detail ) {

+

+	THREE.Geometry.call( this );

+

+	radius = radius || 1;

+	detail = detail || 0;

+

+	var that = this;

+

+	for ( var i = 0, l = vertices.length; i < l; i ++ ) {

+

+		prepare( new THREE.Vector3( vertices[ i ][ 0 ], vertices[ i ][ 1 ], vertices[ i ][ 2 ] ) );

+

+	}

+

+	var midpoints = [], p = this.vertices;

+

+	for ( var i = 0, l = faces.length; i < l; i ++ ) {

+

+		make( p[ faces[ i ][ 0 ] ], p[ faces[ i ][ 1 ] ], p[ faces[ i ][ 2 ] ], detail );

+

+	}

+

+	this.mergeVertices();

+

+	// Apply radius

+

+	for ( var i = 0, l = this.vertices.length; i < l; i ++ ) {

+

+		this.vertices[ i ].multiplyScalar( radius );

+

+	}

+

+

+	// Project vector onto sphere's surface

+

+	function prepare( vector ) {

+

+		var vertex = vector.normalize().clone();

+		vertex.index = that.vertices.push( vertex ) - 1;

+

+		// Texture coords are equivalent to map coords, calculate angle and convert to fraction of a circle.

+

+		var u = azimuth( vector ) / 2 / Math.PI + 0.5;

+		var v = inclination( vector ) / Math.PI + 0.5;

+		vertex.uv = new THREE.Vector2( u, 1 - v );

+

+		return vertex;

+

+	}

+

+

+	// Approximate a curved face with recursively sub-divided triangles.

+

+	function make( v1, v2, v3, detail ) {

+

+		if ( detail < 1 ) {

+

+			var face = new THREE.Face3( v1.index, v2.index, v3.index, [ v1.clone(), v2.clone(), v3.clone() ] );

+			face.centroid.add( v1 ).add( v2 ).add( v3 ).divideScalar( 3 );

+			face.normal = face.centroid.clone().normalize();

+			that.faces.push( face );

+

+			var azi = azimuth( face.centroid );

+			that.faceVertexUvs[ 0 ].push( [

+				correctUV( v1.uv, v1, azi ),

+				correctUV( v2.uv, v2, azi ),

+				correctUV( v3.uv, v3, azi )

+			] );

+

+		} else {

+

+			detail -= 1;

+

+			// split triangle into 4 smaller triangles

+

+			make( v1, midpoint( v1, v2 ), midpoint( v1, v3 ), detail ); // top quadrant

+			make( midpoint( v1, v2 ), v2, midpoint( v2, v3 ), detail ); // left quadrant

+			make( midpoint( v1, v3 ), midpoint( v2, v3 ), v3, detail ); // right quadrant

+			make( midpoint( v1, v2 ), midpoint( v2, v3 ), midpoint( v1, v3 ), detail ); // center quadrant

+

+		}

+

+	}

+

+	function midpoint( v1, v2 ) {

+

+		if ( !midpoints[ v1.index ] ) midpoints[ v1.index ] = [];

+		if ( !midpoints[ v2.index ] ) midpoints[ v2.index ] = [];

+

+		var mid = midpoints[ v1.index ][ v2.index ];

+

+		if ( mid === undefined ) {

+

+			// generate mean point and project to surface with prepare()

+

+			midpoints[ v1.index ][ v2.index ] = midpoints[ v2.index ][ v1.index ] = mid = prepare(

+				new THREE.Vector3().addVectors( v1, v2 ).divideScalar( 2 )

+			);

+		}

+

+		return mid;

+

+	}

+

+

+	// Angle around the Y axis, counter-clockwise when looking from above.

+

+	function azimuth( vector ) {

+

+		return Math.atan2( vector.z, -vector.x );

+

+	}

+

+

+	// Angle above the XZ plane.

+

+	function inclination( vector ) {

+

+		return Math.atan2( -vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );

+

+	}

+

+

+	// Texture fixing helper. Spheres have some odd behaviours.

+

+	function correctUV( uv, vector, azimuth ) {

+

+		if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) uv = new THREE.Vector2( uv.x - 1, uv.y );

+		if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) uv = new THREE.Vector2( azimuth / 2 / Math.PI + 0.5, uv.y );

+		return uv;

+

+	}

+

+	this.computeCentroids();

+

+    this.boundingSphere = new THREE.Sphere( new THREE.Vector3(), radius );

+

+};

+

+THREE.PolyhedronGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author timothypratley / https://github.com/timothypratley

+ */

+

+THREE.IcosahedronGeometry = function ( radius, detail ) {

+

+	var t = ( 1 + Math.sqrt( 5 ) ) / 2;

+

+	var vertices = [

+		[ -1,  t,  0 ], [  1, t, 0 ], [ -1, -t,  0 ], [  1, -t,  0 ],

+		[  0, -1,  t ], [  0, 1, t ], [  0, -1, -t ], [  0,  1, -t ],

+		[  t,  0, -1 ], [  t, 0, 1 ], [ -t,  0, -1 ], [ -t,  0,  1 ]

+	];

+

+	var faces = [

+		[ 0, 11,  5 ], [ 0,  5,  1 ], [  0,  1,  7 ], [  0,  7, 10 ], [  0, 10, 11 ],

+		[ 1,  5,  9 ], [ 5, 11,  4 ], [ 11, 10,  2 ], [ 10,  7,  6 ], [  7,  1,  8 ],

+		[ 3,  9,  4 ], [ 3,  4,  2 ], [  3,  2,  6 ], [  3,  6,  8 ], [  3,  8,  9 ],

+		[ 4,  9,  5 ], [ 2,  4, 11 ], [  6,  2, 10 ], [  8,  6,  7 ], [  9,  8,  1 ]

+	];

+

+	THREE.PolyhedronGeometry.call( this, vertices, faces, radius, detail );

+

+};

+

+THREE.IcosahedronGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author timothypratley / https://github.com/timothypratley

+ */

+

+THREE.OctahedronGeometry = function ( radius, detail ) {

+

+	var vertices = [

+		[ 1, 0, 0 ], [ -1, 0, 0 ], [ 0, 1, 0 ], [ 0, -1, 0 ], [ 0, 0, 1 ], [ 0, 0, -1 ]

+	];

+

+	var faces = [

+		[ 0, 2, 4 ], [ 0, 4, 3 ], [ 0, 3, 5 ], [ 0, 5, 2 ], [ 1, 2, 5 ], [ 1, 5, 3 ], [ 1, 3, 4 ], [ 1, 4, 2 ]

+	];

+

+	THREE.PolyhedronGeometry.call( this, vertices, faces, radius, detail );

+};

+

+THREE.OctahedronGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author timothypratley / https://github.com/timothypratley

+ */

+

+THREE.TetrahedronGeometry = function ( radius, detail ) {

+

+	var vertices = [

+		[ 1,  1,  1 ], [ -1, -1, 1 ], [ -1, 1, -1 ], [ 1, -1, -1 ]

+	];

+

+	var faces = [

+		[ 2, 1, 0 ], [ 0, 3, 2 ], [ 1, 3, 0 ], [ 2, 3, 1 ]

+	];

+

+	THREE.PolyhedronGeometry.call( this, vertices, faces, radius, detail );

+

+};

+

+THREE.TetrahedronGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author zz85 / https://github.com/zz85

+ * Parametric Surfaces Geometry

+ * based on the brilliant article by @prideout http://prideout.net/blog/?p=44

+ *

+ * new THREE.ParametricGeometry( parametricFunction, uSegments, ySegements, useTris );

+ *

+ */

+

+THREE.ParametricGeometry = function ( func, slices, stacks, useTris ) {

+

+	THREE.Geometry.call( this );

+

+	var verts = this.vertices;

+	var faces = this.faces;

+	var uvs = this.faceVertexUvs[ 0 ];

+

+	useTris = (useTris === undefined) ? false : useTris;

+

+	var i, il, j, p;

+	var u, v;

+

+	var stackCount = stacks + 1;

+	var sliceCount = slices + 1;

+

+	for ( i = 0; i <= stacks; i ++ ) {

+

+		v = i / stacks;

+

+		for ( j = 0; j <= slices; j ++ ) {

+

+			u = j / slices;

+

+			p = func( u, v );

+			verts.push( p );

+

+		}

+	}

+

+	var a, b, c, d;

+	var uva, uvb, uvc, uvd;

+

+	for ( i = 0; i < stacks; i ++ ) {

+

+		for ( j = 0; j < slices; j ++ ) {

+

+			a = i * sliceCount + j;

+			b = i * sliceCount + j + 1;

+			c = (i + 1) * sliceCount + j;

+			d = (i + 1) * sliceCount + j + 1;

+

+			uva = new THREE.Vector2( j / slices, i / stacks );

+			uvb = new THREE.Vector2( ( j + 1 ) / slices, i / stacks );

+			uvc = new THREE.Vector2( j / slices, ( i + 1 ) / stacks );

+			uvd = new THREE.Vector2( ( j + 1 ) / slices, ( i + 1 ) / stacks );

+

+			if ( useTris ) {

+

+				faces.push( new THREE.Face3( a, b, c ) );

+				faces.push( new THREE.Face3( b, d, c ) );

+

+				uvs.push( [ uva, uvb, uvc ] );

+				uvs.push( [ uvb, uvd, uvc ] );

+

+			} else {

+

+				faces.push( new THREE.Face4( a, b, d, c ) );

+				uvs.push( [ uva, uvb, uvd, uvc ] );

+

+			}

+

+		}

+

+	}

+

+	// console.log(this);

+

+	// magic bullet

+	// var diff = this.mergeVertices();

+	// console.log('removed ', diff, ' vertices by merging');

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+	this.computeVertexNormals();

+

+};

+

+THREE.ParametricGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author qiao / https://github.com/qiao

+ * @fileoverview This is a convex hull generator using the incremental method. 

+ * The complexity is O(n^2) where n is the number of vertices.

+ * O(nlogn) algorithms do exist, but they are much more complicated.

+ *

+ * Benchmark: 

+ *

+ *  Platform: CPU: P7350 @2.00GHz Engine: V8

+ *

+ *  Num Vertices	Time(ms)

+ *

+ *     10           1

+ *     20           3

+ *     30           19

+ *     40           48

+ *     50           107

+ */

+

+THREE.ConvexGeometry = function( vertices ) {

+

+	THREE.Geometry.call( this );

+

+	var faces = [ [ 0, 1, 2 ], [ 0, 2, 1 ] ]; 

+

+	for ( var i = 3; i < vertices.length; i++ ) {

+

+		addPoint( i );

+

+	}

+

+

+	function addPoint( vertexId ) {

+

+		var vertex = vertices[ vertexId ].clone();

+

+		var mag = vertex.length();

+		vertex.x += mag * randomOffset();

+		vertex.y += mag * randomOffset();

+		vertex.z += mag * randomOffset();

+

+		var hole = [];

+

+		for ( var f = 0; f < faces.length; ) {

+

+			var face = faces[ f ];

+

+			// for each face, if the vertex can see it,

+			// then we try to add the face's edges into the hole.

+			if ( visible( face, vertex ) ) {

+

+				for ( var e = 0; e < 3; e++ ) {

+

+					var edge = [ face[ e ], face[ ( e + 1 ) % 3 ] ];

+					var boundary = true;

+

+					// remove duplicated edges.

+					for ( var h = 0; h < hole.length; h++ ) {

+

+						if ( equalEdge( hole[ h ], edge ) ) {

+

+							hole[ h ] = hole[ hole.length - 1 ];

+							hole.pop();

+							boundary = false;

+							break;

+

+						}

+

+					}

+

+					if ( boundary ) {

+

+						hole.push( edge );

+

+					}

+

+				}

+

+				// remove faces[ f ]

+				faces[ f ] = faces[ faces.length - 1 ];

+				faces.pop();

+

+			} else { // not visible

+

+				f++;

+

+			}

+		}

+

+		// construct the new faces formed by the edges of the hole and the vertex

+		for ( var h = 0; h < hole.length; h++ ) {

+

+			faces.push( [ 

+				hole[ h ][ 0 ],

+				hole[ h ][ 1 ],

+				vertexId

+			] );

+

+		}

+	}

+

+	/**

+	 * Whether the face is visible from the vertex

+	 */

+	function visible( face, vertex ) {

+

+		var va = vertices[ face[ 0 ] ];

+		var vb = vertices[ face[ 1 ] ];

+		var vc = vertices[ face[ 2 ] ];

+

+		var n = normal( va, vb, vc );

+

+		// distance from face to origin

+		var dist = n.dot( va );

+

+		return n.dot( vertex ) >= dist; 

+

+	}

+

+	/**

+	 * Face normal

+	 */

+	function normal( va, vb, vc ) {

+

+		var cb = new THREE.Vector3();

+		var ab = new THREE.Vector3();

+

+		cb.subVectors( vc, vb );

+		ab.subVectors( va, vb );

+		cb.cross( ab );

+

+		cb.normalize();

+

+		return cb;

+

+	}

+

+	/**

+	 * Detect whether two edges are equal.

+	 * Note that when constructing the convex hull, two same edges can only

+	 * be of the negative direction.

+	 */

+	function equalEdge( ea, eb ) {

+

+		return ea[ 0 ] === eb[ 1 ] && ea[ 1 ] === eb[ 0 ]; 

+

+	}

+

+	/**

+	 * Create a random offset between -1e-6 and 1e-6.

+	 */

+	function randomOffset() {

+

+		return ( Math.random() - 0.5 ) * 2 * 1e-6;

+

+	}

+

+

+	/**

+	 * XXX: Not sure if this is the correct approach. Need someone to review.

+	 */

+	function vertexUv( vertex ) {

+

+		var mag = vertex.length();

+		return new THREE.Vector2( vertex.x / mag, vertex.y / mag );

+

+	}

+

+	// Push vertices into `this.vertices`, skipping those inside the hull

+	var id = 0;

+	var newId = new Array( vertices.length ); // map from old vertex id to new id

+

+	for ( var i = 0; i < faces.length; i++ ) {

+

+		 var face = faces[ i ];

+

+		 for ( var j = 0; j < 3; j++ ) {

+

+				if ( newId[ face[ j ] ] === undefined ) {

+

+						newId[ face[ j ] ] = id++;

+						this.vertices.push( vertices[ face[ j ] ] );

+

+				}

+

+				face[ j ] = newId[ face[ j ] ];

+

+		 }

+

+	}

+

+	// Convert faces into instances of THREE.Face3

+	for ( var i = 0; i < faces.length; i++ ) {

+

+		this.faces.push( new THREE.Face3( 

+				faces[ i ][ 0 ],

+				faces[ i ][ 1 ],

+				faces[ i ][ 2 ]

+		) );

+

+	}

+

+	// Compute UVs

+	for ( var i = 0; i < this.faces.length; i++ ) {

+

+		var face = this.faces[ i ];

+

+		this.faceVertexUvs[ 0 ].push( [

+			vertexUv( this.vertices[ face.a ] ),

+			vertexUv( this.vertices[ face.b ] ),

+			vertexUv( this.vertices[ face.c ])

+		] );

+

+	}

+

+

+	this.computeCentroids();

+	this.computeFaceNormals();

+	this.computeVertexNormals();

+

+};

+

+THREE.ConvexGeometry.prototype = Object.create( THREE.Geometry.prototype );

+/**

+ * @author sroucheray / http://sroucheray.org/

+ * @author mrdoob / http://mrdoob.com/

+ */

+

+THREE.AxisHelper = function ( size ) {

+

+	var geometry = new THREE.Geometry();

+

+	geometry.vertices.push(

+		new THREE.Vector3(), new THREE.Vector3( size || 1, 0, 0 ),

+		new THREE.Vector3(), new THREE.Vector3( 0, size || 1, 0 ),

+		new THREE.Vector3(), new THREE.Vector3( 0, 0, size || 1 )

+	);

+

+	geometry.colors.push(

+		new THREE.Color( 0xff0000 ), new THREE.Color( 0xffaa00 ),

+		new THREE.Color( 0x00ff00 ), new THREE.Color( 0xaaff00 ),

+		new THREE.Color( 0x0000ff ), new THREE.Color( 0x00aaff )

+	);

+

+	var material = new THREE.LineBasicMaterial( { vertexColors: THREE.VertexColors } );

+

+	THREE.Line.call( this, geometry, material, THREE.LinePieces );

+

+};

+

+THREE.AxisHelper.prototype = Object.create( THREE.Line.prototype );

+/**

+ * @author WestLangley / http://github.com/WestLangley

+ * @author zz85 / https://github.com/zz85

+ * @author bhouston / https://exocortex.com

+ *

+ * Creates an arrow for visualizing directions

+ *

+ * Parameters:

+ *  dir - Vector3

+ *  origin - Vector3

+ *  length - Number

+ *  hex - color in hex value

+ */

+

+THREE.ArrowHelper = function ( dir, origin, length, hex ) {

+

+	THREE.Object3D.call( this );

+

+	if ( length === undefined ) length = 20;

+	if ( hex === undefined ) hex = 0xffff00;

+

+	var lineGeometry = new THREE.Geometry();

+	lineGeometry.vertices.push( new THREE.Vector3( 0, 0, 0 ) );

+	lineGeometry.vertices.push( new THREE.Vector3( 0, 1, 0 ) );

+

+	this.line = new THREE.Line( lineGeometry, new THREE.LineBasicMaterial( { color: hex } ) );

+	this.add( this.line );

+

+	var coneGeometry = new THREE.CylinderGeometry( 0, 0.05, 0.25, 5, 1 );

+

+	this.cone = new THREE.Mesh( coneGeometry, new THREE.MeshBasicMaterial( { color: hex } ) );

+	this.cone.position.set( 0, 1, 0 );

+	this.add( this.cone );

+

+	if ( origin instanceof THREE.Vector3 ) this.position = origin;

+

+	this.setDirection( dir );

+	this.setLength( length );

+

+};

+

+THREE.ArrowHelper.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.ArrowHelper.prototype.setDirection = function ( dir ) {

+

+    var d = THREE.ArrowHelper.__v1.copy( dir ).normalize();

+

+    if ( d.y > 0.999 ) {

+

+        this.rotation.set( 0, 0, 0 );

+ 

+    } else if ( d.y < - 0.999 ) {

+

+        this.rotation.set( Math.PI, 0, 0 );

+

+    } else {

+

+	    var axis = THREE.ArrowHelper.__v2.set( d.z, 0, - d.x ).normalize();

+	    var radians = Math.acos( d.y );

+	    var quaternion = THREE.ArrowHelper.__q1.setFromAxisAngle( axis, radians );

+

+	    this.rotation.setEulerFromQuaternion( quaternion, this.eulerOrder );

+

+	}

+

+};

+

+THREE.ArrowHelper.prototype.setLength = function ( length ) {

+

+	this.scale.set( length, length, length );

+

+};

+

+THREE.ArrowHelper.prototype.setColor = function ( hex ) {

+

+	this.line.material.color.setHex( hex );

+	this.cone.material.color.setHex( hex );

+

+};

+

+THREE.ArrowHelper.__v1 = new THREE.Vector3();

+THREE.ArrowHelper.__v2 = new THREE.Vector3();

+THREE.ArrowHelper.__q1 = new THREE.Quaternion();

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ *	- shows frustum, line of sight and up of the camera

+ *	- suitable for fast updates

+ * 	- based on frustum visualization in lightgl.js shadowmap example

+ *		http://evanw.github.com/lightgl.js/tests/shadowmap.html

+ */

+

+THREE.CameraHelper = function ( camera ) {

+

+	THREE.Line.call( this );

+

+	var scope = this;

+

+	this.geometry = new THREE.Geometry();

+	this.material = new THREE.LineBasicMaterial( { color: 0xffffff, vertexColors: THREE.FaceColors } );

+	this.type = THREE.LinePieces;

+

+	this.matrixWorld = camera.matrixWorld;

+	this.matrixAutoUpdate = false;

+

+	this.pointMap = {};

+

+	// colors

+

+	var hexFrustum = 0xffaa00;

+	var hexCone = 0xff0000;

+	var hexUp = 0x00aaff;

+	var hexTarget = 0xffffff;

+	var hexCross = 0x333333;

+

+	// near

+

+	addLine( "n1", "n2", hexFrustum );

+	addLine( "n2", "n4", hexFrustum );

+	addLine( "n4", "n3", hexFrustum );

+	addLine( "n3", "n1", hexFrustum );

+

+	// far

+

+	addLine( "f1", "f2", hexFrustum );

+	addLine( "f2", "f4", hexFrustum );

+	addLine( "f4", "f3", hexFrustum );

+	addLine( "f3", "f1", hexFrustum );

+

+	// sides

+

+	addLine( "n1", "f1", hexFrustum );

+	addLine( "n2", "f2", hexFrustum );

+	addLine( "n3", "f3", hexFrustum );

+	addLine( "n4", "f4", hexFrustum );

+

+	// cone

+

+	addLine( "p", "n1", hexCone );

+	addLine( "p", "n2", hexCone );

+	addLine( "p", "n3", hexCone );

+	addLine( "p", "n4", hexCone );

+

+	// up

+

+	addLine( "u1", "u2", hexUp );

+	addLine( "u2", "u3", hexUp );

+	addLine( "u3", "u1", hexUp );

+

+	// target

+

+	addLine( "c", "t", hexTarget );

+	addLine( "p", "c", hexCross );

+

+	// cross

+

+	addLine( "cn1", "cn2", hexCross );

+	addLine( "cn3", "cn4", hexCross );

+

+	addLine( "cf1", "cf2", hexCross );

+	addLine( "cf3", "cf4", hexCross );

+

+	this.camera = camera;

+

+	function addLine( a, b, hex ) {

+

+		addPoint( a, hex );

+		addPoint( b, hex );

+

+	}

+

+	function addPoint( id, hex ) {

+

+		scope.geometry.vertices.push( new THREE.Vector3() );

+		scope.geometry.colors.push( new THREE.Color( hex ) );

+

+		if ( scope.pointMap[ id ] === undefined ) scope.pointMap[ id ] = [];

+

+		scope.pointMap[ id ].push( scope.geometry.vertices.length - 1 );

+

+	}

+

+	this.update( camera );

+

+};

+

+THREE.CameraHelper.prototype = Object.create( THREE.Line.prototype );

+

+THREE.CameraHelper.prototype.update = function () {

+

+	var scope = this;

+

+	var w = 1, h = 1;

+

+	// we need just camera projection matrix

+	// world matrix must be identity

+

+	THREE.CameraHelper.__c.projectionMatrix.copy( this.camera.projectionMatrix );

+

+	// center / target

+

+	setPoint( "c", 0, 0, -1 );

+	setPoint( "t", 0, 0,  1 );

+

+	// near

+

+	setPoint( "n1", -w, -h, -1 );

+	setPoint( "n2",  w, -h, -1 );

+	setPoint( "n3", -w,  h, -1 );

+	setPoint( "n4",  w,  h, -1 );

+

+	// far

+

+	setPoint( "f1", -w, -h, 1 );

+	setPoint( "f2",  w, -h, 1 );

+	setPoint( "f3", -w,  h, 1 );

+	setPoint( "f4",  w,  h, 1 );

+

+	// up

+

+	setPoint( "u1",  w * 0.7, h * 1.1, -1 );

+	setPoint( "u2", -w * 0.7, h * 1.1, -1 );

+	setPoint( "u3",        0, h * 2,   -1 );

+

+	// cross

+

+	setPoint( "cf1", -w,  0, 1 );

+	setPoint( "cf2",  w,  0, 1 );

+	setPoint( "cf3",  0, -h, 1 );

+	setPoint( "cf4",  0,  h, 1 );

+

+	setPoint( "cn1", -w,  0, -1 );

+	setPoint( "cn2",  w,  0, -1 );

+	setPoint( "cn3",  0, -h, -1 );

+	setPoint( "cn4",  0,  h, -1 );

+

+	function setPoint( point, x, y, z ) {

+

+		THREE.CameraHelper.__v.set( x, y, z );

+		THREE.CameraHelper.__projector.unprojectVector( THREE.CameraHelper.__v, THREE.CameraHelper.__c );

+

+		var points = scope.pointMap[ point ];

+

+		if ( points !== undefined ) {

+

+			for ( var i = 0, il = points.length; i < il; i ++ ) {

+

+				scope.geometry.vertices[ points[ i ] ].copy( THREE.CameraHelper.__v );

+

+			}

+

+		}

+

+	}

+

+	this.geometry.verticesNeedUpdate = true;

+

+};

+

+THREE.CameraHelper.__projector = new THREE.Projector();

+THREE.CameraHelper.__v = new THREE.Vector3();

+THREE.CameraHelper.__c = new THREE.Camera();

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ *	- shows directional light color, intensity, position, orientation and target

+ */

+

+THREE.DirectionalLightHelper = function ( light, sphereSize ) {

+

+	THREE.Object3D.call( this );

+

+	this.light = light;

+

+	// position

+

+	this.position = light.position;

+

+	// direction

+

+	this.direction = new THREE.Vector3();

+	this.direction.subVectors( light.target.position, light.position );

+

+	// color

+

+	var intensity = THREE.Math.clamp( light.intensity, 0, 1 );

+

+	this.color = light.color.clone();

+	this.color.multiplyScalar( intensity );

+

+	var hexColor = this.color.getHex();

+

+	// light helper

+

+	var bulbGeometry = new THREE.SphereGeometry( sphereSize, 16, 8 );

+	var raysGeometry = new THREE.AsteriskGeometry( sphereSize * 1.25, sphereSize * 2.25 );

+

+	var bulbMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false } );

+	var raysMaterial = new THREE.LineBasicMaterial( { color: hexColor, fog: false } );

+

+	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );

+

+	this.lightRays = new THREE.Line( raysGeometry, raysMaterial, THREE.LinePieces );

+

+	this.add( this.lightSphere );

+	this.add( this.lightRays );

+

+	this.lightSphere.properties.isGizmo = true;

+	this.lightSphere.properties.gizmoSubject = light;

+	this.lightSphere.properties.gizmoRoot = this;

+

+	// light target helper

+

+	this.targetSphere = null;

+

+	if ( light.target.properties.targetInverse !== undefined ) {

+

+		var targetGeo = new THREE.SphereGeometry( sphereSize, 8, 4 );

+		var targetMaterial = new THREE.MeshBasicMaterial( { color: hexColor, wireframe: true, fog: false } );

+

+		this.targetSphere = new THREE.Mesh( targetGeo, targetMaterial );

+		this.targetSphere.position = light.target.position;

+

+		this.targetSphere.properties.isGizmo = true;

+		this.targetSphere.properties.gizmoSubject = light.target;

+		this.targetSphere.properties.gizmoRoot = this.targetSphere;

+

+		var lineMaterial = new THREE.LineDashedMaterial( { color: hexColor, dashSize: 4, gapSize: 4, opacity: 0.75, transparent: true, fog: false } );

+		var lineGeometry = new THREE.Geometry();

+		lineGeometry.vertices.push( this.position.clone() );

+		lineGeometry.vertices.push( this.targetSphere.position.clone() );

+		lineGeometry.computeLineDistances();

+

+		this.targetLine = new THREE.Line( lineGeometry, lineMaterial );

+		this.targetLine.properties.isGizmo = true;

+

+	}

+

+	//

+

+	this.properties.isGizmo = true;

+

+}

+

+THREE.DirectionalLightHelper.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.DirectionalLightHelper.prototype.update = function () {

+

+	// update arrow orientation

+	// pointing from light to target

+

+	this.direction.subVectors( this.light.target.position, this.light.position );

+

+	// update arrow, spheres, rays and line colors to light color * light intensity

+

+	var intensity = THREE.Math.clamp( this.light.intensity, 0, 1 );

+

+	this.color.copy( this.light.color );

+	this.color.multiplyScalar( intensity );

+

+	this.lightSphere.material.color.copy( this.color );

+	this.lightRays.material.color.copy( this.color );

+

+	// Only update targetSphere and targetLine if available

+	if ( this.targetSphere !== null ) {

+

+		this.targetSphere.material.color.copy( this.color );

+		this.targetLine.material.color.copy( this.color );

+

+		// update target line vertices

+

+		this.targetLine.geometry.vertices[ 0 ].copy( this.light.position );

+		this.targetLine.geometry.vertices[ 1 ].copy( this.light.target.position );

+

+		this.targetLine.geometry.computeLineDistances();

+		this.targetLine.geometry.verticesNeedUpdate = true;

+

+	}

+

+}

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ *	- shows hemisphere light intensity, sky and ground colors and directions

+ */

+

+THREE.HemisphereLightHelper = function ( light, sphereSize, arrowLength, domeSize ) {

+

+	THREE.Object3D.call( this );

+

+	this.light = light;

+

+	// position

+

+	this.position = light.position;

+

+	//

+

+	var intensity = THREE.Math.clamp( light.intensity, 0, 1 );

+

+	// sky color

+

+	this.color = light.color.clone();

+	this.color.multiplyScalar( intensity );

+

+	var hexColor = this.color.getHex();

+

+	// ground color

+

+	this.groundColor = light.groundColor.clone();

+	this.groundColor.multiplyScalar( intensity );

+

+	var hexColorGround = this.groundColor.getHex();

+

+	// double colored light bulb

+

+	var bulbGeometry = new THREE.SphereGeometry( sphereSize, 16, 8, 0, Math.PI * 2, 0, Math.PI * 0.5 );

+	var bulbGroundGeometry = new THREE.SphereGeometry( sphereSize, 16, 8, 0, Math.PI * 2, Math.PI * 0.5, Math.PI );

+

+	var bulbSkyMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false } );

+	var bulbGroundMaterial = new THREE.MeshBasicMaterial( { color: hexColorGround, fog: false } );

+

+	for ( var i = 0, il = bulbGeometry.faces.length; i < il; i ++ ) {

+

+		bulbGeometry.faces[ i ].materialIndex = 0;

+

+	}

+

+	for ( var i = 0, il = bulbGroundGeometry.faces.length; i < il; i ++ ) {

+

+		bulbGroundGeometry.faces[ i ].materialIndex = 1;

+

+	}

+

+	THREE.GeometryUtils.merge( bulbGeometry, bulbGroundGeometry );

+

+	this.lightSphere = new THREE.Mesh( bulbGeometry, new THREE.MeshFaceMaterial( [ bulbSkyMaterial, bulbGroundMaterial ] ) );

+

+	// arrows for sky and ground light directions

+

+	this.lightArrow = new THREE.ArrowHelper( new THREE.Vector3( 0, 1, 0 ), new THREE.Vector3( 0, ( sphereSize + arrowLength ) * 1.1, 0 ), arrowLength, hexColor );

+	this.lightArrow.rotation.x = Math.PI;

+

+	this.lightArrowGround = new THREE.ArrowHelper( new THREE.Vector3( 0, 1, 0 ), new THREE.Vector3( 0, ( sphereSize + arrowLength ) * -1.1, 0 ), arrowLength, hexColorGround );

+

+	var joint = new THREE.Object3D();

+	joint.rotation.x = -Math.PI * 0.5;

+

+	joint.add( this.lightSphere );

+	joint.add( this.lightArrow );

+	joint.add( this.lightArrowGround );

+

+	this.add( joint );

+

+	//

+

+	this.lightSphere.properties.isGizmo = true;

+	this.lightSphere.properties.gizmoSubject = light;

+	this.lightSphere.properties.gizmoRoot = this;

+

+	//

+

+	this.properties.isGizmo = true;

+

+	//

+

+	this.target = new THREE.Vector3();

+	this.lookAt( this.target );

+

+}

+

+THREE.HemisphereLightHelper.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.HemisphereLightHelper.prototype.update = function () {

+

+	// update sphere sky and ground colors to light color * light intensity

+

+	var intensity = THREE.Math.clamp( this.light.intensity, 0, 1 );

+

+	this.color.copy( this.light.color );

+	this.color.multiplyScalar( intensity );

+

+	this.groundColor.copy( this.light.groundColor );

+	this.groundColor.multiplyScalar( intensity );

+

+	this.lightSphere.material.materials[ 0 ].color.copy( this.color );

+	this.lightSphere.material.materials[ 1 ].color.copy( this.groundColor );

+

+	this.lightArrow.setColor( this.color.getHex() );

+	this.lightArrowGround.setColor( this.groundColor.getHex() );

+

+	this.lookAt( this.target );

+

+}

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ *	- shows point light color, intensity, position and distance

+ */

+

+THREE.PointLightHelper = function ( light, sphereSize ) {

+

+	THREE.Object3D.call( this );

+

+	this.light = light;

+

+	// position

+

+	this.position = light.position;

+

+	// color

+

+	var intensity = THREE.Math.clamp( light.intensity, 0, 1 );

+

+	this.color = light.color.clone();

+	this.color.multiplyScalar( intensity );

+

+	var hexColor = this.color.getHex();

+

+	// light helper

+

+	var bulbGeometry = new THREE.SphereGeometry( sphereSize, 16, 8 );

+	var raysGeometry = new THREE.AsteriskGeometry( sphereSize * 1.25, sphereSize * 2.25 );

+	var distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );

+

+	var bulbMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false } );

+	var raysMaterial = new THREE.LineBasicMaterial( { color: hexColor, fog: false } );

+	var distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );

+

+	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );

+	this.lightRays = new THREE.Line( raysGeometry, raysMaterial, THREE.LinePieces );

+	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );

+

+	var d = light.distance;

+

+	if ( d === 0.0 ) {

+

+		this.lightDistance.visible = false;

+

+	} else {

+

+		this.lightDistance.scale.set( d, d, d );

+

+	}

+

+	this.add( this.lightSphere );

+	this.add( this.lightRays );

+	this.add( this.lightDistance );

+

+	//

+

+	this.lightSphere.properties.isGizmo = true;

+	this.lightSphere.properties.gizmoSubject = light;

+	this.lightSphere.properties.gizmoRoot = this;

+

+	//

+

+	this.properties.isGizmo = true;

+

+}

+

+THREE.PointLightHelper.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.PointLightHelper.prototype.update = function () {

+

+	// update sphere and rays colors to light color * light intensity

+

+	var intensity = THREE.Math.clamp( this.light.intensity, 0, 1 );

+

+	this.color.copy( this.light.color );

+	this.color.multiplyScalar( intensity );

+

+	this.lightSphere.material.color.copy( this.color );

+	this.lightRays.material.color.copy( this.color );

+	this.lightDistance.material.color.copy( this.color );

+

+	//

+

+	var d = this.light.distance;

+

+	if ( d === 0.0 ) {

+

+		this.lightDistance.visible = false;

+

+	} else {

+

+		this.lightDistance.visible = true;

+		this.lightDistance.scale.set( d, d, d );

+

+	}

+

+}

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ *

+ *	- shows spot light color, intensity, position, orientation, light cone and target

+ */

+

+THREE.SpotLightHelper = function ( light, sphereSize ) {

+

+	THREE.Object3D.call( this );

+

+	this.light = light;

+

+	// position

+

+	this.position = light.position;

+

+	// direction

+

+	this.direction = new THREE.Vector3();

+	this.direction.subVectors( light.target.position, light.position );

+

+	// color

+

+	var intensity = THREE.Math.clamp( light.intensity, 0, 1 );

+

+	this.color = light.color.clone();

+	this.color.multiplyScalar( intensity );

+

+	var hexColor = this.color.getHex();

+

+	// light helper

+

+	var bulbGeometry = new THREE.SphereGeometry( sphereSize, 16, 8 );

+	var raysGeometry = new THREE.AsteriskGeometry( sphereSize * 1.25, sphereSize * 2.25 );

+	var coneGeometry = new THREE.CylinderGeometry( 0.0001, 1, 1, 8, 1, true );

+

+	var coneMatrix = new THREE.Matrix4();

+	coneMatrix.rotateX( -Math.PI/2 );

+	coneMatrix.translate( new THREE.Vector3( 0, -0.5, 0 ) );

+	coneGeometry.applyMatrix( coneMatrix );

+

+	var bulbMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false } );

+	var raysMaterial = new THREE.LineBasicMaterial( { color: hexColor, fog: false } );

+	var coneMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.3, transparent: true } );

+

+	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );

+	this.lightCone = new THREE.Mesh( coneGeometry, coneMaterial );

+

+	var coneLength = light.distance ? light.distance : 10000;

+	var coneWidth = coneLength * Math.tan( light.angle * 0.5 ) * 2;

+	this.lightCone.scale.set( coneWidth, coneWidth, coneLength );

+

+	this.lightRays = new THREE.Line( raysGeometry, raysMaterial, THREE.LinePieces );

+

+	this.gyroscope = new THREE.Gyroscope();

+

+	this.gyroscope.add( this.lightSphere );

+	this.gyroscope.add( this.lightRays );

+

+	this.add( this.gyroscope );

+	this.add( this.lightCone );

+

+	this.lookAt( light.target.position );

+

+	this.lightSphere.properties.isGizmo = true;

+	this.lightSphere.properties.gizmoSubject = light;

+	this.lightSphere.properties.gizmoRoot = this;

+

+	// light target helper

+

+	this.targetSphere = null;

+

+	if ( light.target.properties.targetInverse !== undefined ) {

+

+		var targetGeo = new THREE.SphereGeometry( sphereSize, 8, 4 );

+		var targetMaterial = new THREE.MeshBasicMaterial( { color: hexColor, wireframe: true, fog: false } );

+

+		this.targetSphere = new THREE.Mesh( targetGeo, targetMaterial );

+		this.targetSphere.position = light.target.position;

+

+		this.targetSphere.properties.isGizmo = true;

+		this.targetSphere.properties.gizmoSubject = light.target;

+		this.targetSphere.properties.gizmoRoot = this.targetSphere;

+

+		var lineMaterial = new THREE.LineDashedMaterial( { color: hexColor, dashSize: 4, gapSize: 4, opacity: 0.75, transparent: true, fog: false } );

+		var lineGeometry = new THREE.Geometry();

+		lineGeometry.vertices.push( this.position.clone() );

+		lineGeometry.vertices.push( this.targetSphere.position.clone() );

+		lineGeometry.computeLineDistances();

+

+		this.targetLine = new THREE.Line( lineGeometry, lineMaterial );

+		this.targetLine.properties.isGizmo = true;

+

+	}

+

+	//

+

+	this.properties.isGizmo = true;

+

+}

+

+THREE.SpotLightHelper.prototype = Object.create( THREE.Object3D.prototype );

+

+THREE.SpotLightHelper.prototype.update = function () {

+

+	// update arrow orientation

+	// pointing from light to target

+

+	this.direction.subVectors( this.light.target.position, this.light.position );

+

+	// update light cone orientation and size

+

+	this.lookAt( this.light.target.position );

+

+	var coneLength = this.light.distance ? this.light.distance : 10000;

+	var coneWidth = coneLength * Math.tan( this.light.angle * 0.5 ) * 2;

+	this.lightCone.scale.set( coneWidth, coneWidth, coneLength );

+

+	// update arrow, spheres, rays and line colors to light color * light intensity

+

+	var intensity = THREE.Math.clamp( this.light.intensity, 0, 1 );

+

+	this.color.copy( this.light.color );

+	this.color.multiplyScalar( intensity );

+

+	this.lightSphere.material.color.copy( this.color );

+	this.lightRays.material.color.copy( this.color );

+	this.lightCone.material.color.copy( this.color );

+

+	// Only update targetSphere and targetLine if available

+	if ( this.targetSphere !== null ) {

+

+		this.targetSphere.material.color.copy( this.color );

+		this.targetLine.material.color.copy( this.color );

+

+		// update target line vertices

+

+		this.targetLine.geometry.vertices[ 0 ].copy( this.light.position );

+		this.targetLine.geometry.vertices[ 1 ].copy( this.light.target.position );

+

+		this.targetLine.geometry.computeLineDistances();

+		this.targetLine.geometry.verticesNeedUpdate = true;

+

+	}

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.ImmediateRenderObject = function () {

+

+	THREE.Object3D.call( this );

+

+	this.render = function ( renderCallback ) { };

+

+};

+

+THREE.ImmediateRenderObject.prototype = Object.create( THREE.Object3D.prototype );

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.LensFlare = function ( texture, size, distance, blending, color ) {

+

+	THREE.Object3D.call( this );

+

+	this.lensFlares = [];

+

+	this.positionScreen = new THREE.Vector3();

+	this.customUpdateCallback = undefined;

+

+	if( texture !== undefined ) {

+

+		this.add( texture, size, distance, blending, color );

+

+	}

+

+};

+

+THREE.LensFlare.prototype = Object.create( THREE.Object3D.prototype );

+

+

+/*

+ * Add: adds another flare

+ */

+

+THREE.LensFlare.prototype.add = function ( texture, size, distance, blending, color, opacity ) {

+

+	if( size === undefined ) size = -1;

+	if( distance === undefined ) distance = 0;

+	if( opacity === undefined ) opacity = 1;

+	if( color === undefined ) color = new THREE.Color( 0xffffff );

+	if( blending === undefined ) blending = THREE.NormalBlending;

+

+	distance = Math.min( distance, Math.max( 0, distance ) );

+

+	this.lensFlares.push( { texture: texture, 			// THREE.Texture

+		                    size: size, 				// size in pixels (-1 = use texture.width)

+		                    distance: distance, 		// distance (0-1) from light source (0=at light source)

+		                    x: 0, y: 0, z: 0,			// screen position (-1 => 1) z = 0 is ontop z = 1 is back

+		                    scale: 1, 					// scale

+		                    rotation: 1, 				// rotation

+		                    opacity: opacity,			// opacity

+							color: color,				// color

+		                    blending: blending } );		// blending

+

+};

+

+

+/*

+ * Update lens flares update positions on all flares based on the screen position

+ * Set myLensFlare.customUpdateCallback to alter the flares in your project specific way.

+ */

+

+THREE.LensFlare.prototype.updateLensFlares = function () {

+

+	var f, fl = this.lensFlares.length;

+	var flare;

+	var vecX = -this.positionScreen.x * 2;

+	var vecY = -this.positionScreen.y * 2;

+

+	for( f = 0; f < fl; f ++ ) {

+

+		flare = this.lensFlares[ f ];

+

+		flare.x = this.positionScreen.x + vecX * flare.distance;

+		flare.y = this.positionScreen.y + vecY * flare.distance;

+

+		flare.wantedRotation = flare.x * Math.PI * 0.25;

+		flare.rotation += ( flare.wantedRotation - flare.rotation ) * 0.25;

+

+	}

+

+};

+

+

+

+

+

+

+

+

+

+

+

+

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.MorphBlendMesh = function( geometry, material ) {

+

+	THREE.Mesh.call( this, geometry, material );

+

+	this.animationsMap = {};

+	this.animationsList = [];

+

+	// prepare default animation

+	// (all frames played together in 1 second)

+

+	var numFrames = this.geometry.morphTargets.length;

+

+	var name = "__default";

+

+	var startFrame = 0;

+	var endFrame = numFrames - 1;

+

+	var fps = numFrames / 1;

+

+	this.createAnimation( name, startFrame, endFrame, fps );

+	this.setAnimationWeight( name, 1 );

+

+};

+

+THREE.MorphBlendMesh.prototype = Object.create( THREE.Mesh.prototype );

+

+THREE.MorphBlendMesh.prototype.createAnimation = function ( name, start, end, fps ) {

+

+	var animation = {

+

+		startFrame: start,

+		endFrame: end,

+

+		length: end - start + 1,

+

+		fps: fps,

+		duration: ( end - start ) / fps,

+

+		lastFrame: 0,

+		currentFrame: 0,

+

+		active: false,

+

+		time: 0,

+		direction: 1,

+		weight: 1,

+

+		directionBackwards: false,

+		mirroredLoop: false

+

+	};

+

+	this.animationsMap[ name ] = animation;

+	this.animationsList.push( animation );

+

+};

+

+THREE.MorphBlendMesh.prototype.autoCreateAnimations = function ( fps ) {

+

+	var pattern = /([a-z]+)(\d+)/;

+

+	var firstAnimation, frameRanges = {};

+

+	var geometry = this.geometry;

+

+	for ( var i = 0, il = geometry.morphTargets.length; i < il; i ++ ) {

+

+		var morph = geometry.morphTargets[ i ];

+		var chunks = morph.name.match( pattern );

+

+		if ( chunks && chunks.length > 1 ) {

+

+			var name = chunks[ 1 ];

+			var num = chunks[ 2 ];

+

+			if ( ! frameRanges[ name ] ) frameRanges[ name ] = { start: Infinity, end: -Infinity };

+

+			var range = frameRanges[ name ];

+

+			if ( i < range.start ) range.start = i;

+			if ( i > range.end ) range.end = i;

+

+			if ( ! firstAnimation ) firstAnimation = name;

+

+		}

+

+	}

+

+	for ( var name in frameRanges ) {

+

+		var range = frameRanges[ name ];

+		this.createAnimation( name, range.start, range.end, fps );

+

+	}

+

+	this.firstAnimation = firstAnimation;

+

+};

+

+THREE.MorphBlendMesh.prototype.setAnimationDirectionForward = function ( name ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.direction = 1;

+		animation.directionBackwards = false;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.setAnimationDirectionBackward = function ( name ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.direction = -1;

+		animation.directionBackwards = true;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.setAnimationFPS = function ( name, fps ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.fps = fps;

+		animation.duration = ( animation.end - animation.start ) / animation.fps;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.setAnimationDuration = function ( name, duration ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.duration = duration;

+		animation.fps = ( animation.end - animation.start ) / animation.duration;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.setAnimationWeight = function ( name, weight ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.weight = weight;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.setAnimationTime = function ( name, time ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.time = time;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.getAnimationTime = function ( name ) {

+

+	var time = 0;

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		time = animation.time;

+

+	}

+

+	return time;

+

+};

+

+THREE.MorphBlendMesh.prototype.getAnimationDuration = function ( name ) {

+

+	var duration = -1;

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		duration = animation.duration;

+

+	}

+

+	return duration;

+

+};

+

+THREE.MorphBlendMesh.prototype.playAnimation = function ( name ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.time = 0;

+		animation.active = true;

+

+	} else {

+

+		console.warn( "animation[" + name + "] undefined" );

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.stopAnimation = function ( name ) {

+

+	var animation = this.animationsMap[ name ];

+

+	if ( animation ) {

+

+		animation.active = false;

+

+	}

+

+};

+

+THREE.MorphBlendMesh.prototype.update = function ( delta ) {

+

+	for ( var i = 0, il = this.animationsList.length; i < il; i ++ ) {

+

+		var animation = this.animationsList[ i ];

+

+		if ( ! animation.active ) continue;

+

+		var frameTime = animation.duration / animation.length;

+

+		animation.time += animation.direction * delta;

+

+		if ( animation.mirroredLoop ) {

+

+			if ( animation.time > animation.duration || animation.time < 0 ) {

+

+				animation.direction *= -1;

+

+				if ( animation.time > animation.duration ) {

+

+					animation.time = animation.duration;

+					animation.directionBackwards = true;

+

+				}

+

+				if ( animation.time < 0 ) {

+

+					animation.time = 0;

+					animation.directionBackwards = false;

+

+				}

+

+			}

+

+		} else {

+

+			animation.time = animation.time % animation.duration;

+

+			if ( animation.time < 0 ) animation.time += animation.duration;

+

+		}

+

+		var keyframe = animation.startFrame + THREE.Math.clamp( Math.floor( animation.time / frameTime ), 0, animation.length - 1 );

+		var weight = animation.weight;

+

+		if ( keyframe !== animation.currentFrame ) {

+

+			this.morphTargetInfluences[ animation.lastFrame ] = 0;

+			this.morphTargetInfluences[ animation.currentFrame ] = 1 * weight;

+

+			this.morphTargetInfluences[ keyframe ] = 0;

+

+			animation.lastFrame = animation.currentFrame;

+			animation.currentFrame = keyframe;

+

+		}

+

+		var mix = ( animation.time % frameTime ) / frameTime;

+

+		if ( animation.directionBackwards ) mix = 1 - mix;

+

+		this.morphTargetInfluences[ animation.currentFrame ] = mix * weight;

+		this.morphTargetInfluences[ animation.lastFrame ] = ( 1 - mix ) * weight;

+

+	}

+

+};

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.LensFlarePlugin = function () {

+

+	var _gl, _renderer, _precision, _lensFlare = {};

+

+	this.init = function ( renderer ) {

+

+		_gl = renderer.context;

+		_renderer = renderer;

+

+		_precision = renderer.getPrecision();

+

+		_lensFlare.vertices = new Float32Array( 8 + 8 );

+		_lensFlare.faces = new Uint16Array( 6 );

+

+		var i = 0;

+		_lensFlare.vertices[ i++ ] = -1; _lensFlare.vertices[ i++ ] = -1;	// vertex

+		_lensFlare.vertices[ i++ ] = 0;  _lensFlare.vertices[ i++ ] = 0;	// uv... etc.

+

+		_lensFlare.vertices[ i++ ] = 1;  _lensFlare.vertices[ i++ ] = -1;

+		_lensFlare.vertices[ i++ ] = 1;  _lensFlare.vertices[ i++ ] = 0;

+

+		_lensFlare.vertices[ i++ ] = 1;  _lensFlare.vertices[ i++ ] = 1;

+		_lensFlare.vertices[ i++ ] = 1;  _lensFlare.vertices[ i++ ] = 1;

+

+		_lensFlare.vertices[ i++ ] = -1; _lensFlare.vertices[ i++ ] = 1;

+		_lensFlare.vertices[ i++ ] = 0;  _lensFlare.vertices[ i++ ] = 1;

+

+		i = 0;

+		_lensFlare.faces[ i++ ] = 0; _lensFlare.faces[ i++ ] = 1; _lensFlare.faces[ i++ ] = 2;

+		_lensFlare.faces[ i++ ] = 0; _lensFlare.faces[ i++ ] = 2; _lensFlare.faces[ i++ ] = 3;

+

+		// buffers

+

+		_lensFlare.vertexBuffer     = _gl.createBuffer();

+		_lensFlare.elementBuffer    = _gl.createBuffer();

+

+		_gl.bindBuffer( _gl.ARRAY_BUFFER, _lensFlare.vertexBuffer );

+		_gl.bufferData( _gl.ARRAY_BUFFER, _lensFlare.vertices, _gl.STATIC_DRAW );

+

+		_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, _lensFlare.elementBuffer );

+		_gl.bufferData( _gl.ELEMENT_ARRAY_BUFFER, _lensFlare.faces, _gl.STATIC_DRAW );

+

+		// textures

+

+		_lensFlare.tempTexture      = _gl.createTexture();

+		_lensFlare.occlusionTexture = _gl.createTexture();

+

+		_gl.bindTexture( _gl.TEXTURE_2D, _lensFlare.tempTexture );

+		_gl.texImage2D( _gl.TEXTURE_2D, 0, _gl.RGB, 16, 16, 0, _gl.RGB, _gl.UNSIGNED_BYTE, null );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_MAG_FILTER, _gl.NEAREST );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_MIN_FILTER, _gl.NEAREST );

+

+		_gl.bindTexture( _gl.TEXTURE_2D, _lensFlare.occlusionTexture );

+		_gl.texImage2D( _gl.TEXTURE_2D, 0, _gl.RGBA, 16, 16, 0, _gl.RGBA, _gl.UNSIGNED_BYTE, null );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_MAG_FILTER, _gl.NEAREST );

+		_gl.texParameteri( _gl.TEXTURE_2D, _gl.TEXTURE_MIN_FILTER, _gl.NEAREST );

+

+		if ( _gl.getParameter( _gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS ) <= 0 ) {

+

+			_lensFlare.hasVertexTexture = false;

+			_lensFlare.program = createProgram( THREE.ShaderFlares[ "lensFlare" ], _precision );

+

+		} else {

+

+			_lensFlare.hasVertexTexture = true;

+			_lensFlare.program = createProgram( THREE.ShaderFlares[ "lensFlareVertexTexture" ], _precision );

+

+		}

+

+		_lensFlare.attributes = {};

+		_lensFlare.uniforms = {};

+

+		_lensFlare.attributes.vertex       = _gl.getAttribLocation ( _lensFlare.program, "position" );

+		_lensFlare.attributes.uv           = _gl.getAttribLocation ( _lensFlare.program, "uv" );

+

+		_lensFlare.uniforms.renderType     = _gl.getUniformLocation( _lensFlare.program, "renderType" );

+		_lensFlare.uniforms.map            = _gl.getUniformLocation( _lensFlare.program, "map" );

+		_lensFlare.uniforms.occlusionMap   = _gl.getUniformLocation( _lensFlare.program, "occlusionMap" );

+		_lensFlare.uniforms.opacity        = _gl.getUniformLocation( _lensFlare.program, "opacity" );

+		_lensFlare.uniforms.color          = _gl.getUniformLocation( _lensFlare.program, "color" );

+		_lensFlare.uniforms.scale          = _gl.getUniformLocation( _lensFlare.program, "scale" );

+		_lensFlare.uniforms.rotation       = _gl.getUniformLocation( _lensFlare.program, "rotation" );

+		_lensFlare.uniforms.screenPosition = _gl.getUniformLocation( _lensFlare.program, "screenPosition" );

+

+	};

+

+

+	/*

+	 * Render lens flares

+	 * Method: renders 16x16 0xff00ff-colored points scattered over the light source area,

+	 *         reads these back and calculates occlusion.

+	 *         Then _lensFlare.update_lensFlares() is called to re-position and

+	 *         update transparency of flares. Then they are rendered.

+	 *

+	 */

+

+	this.render = function ( scene, camera, viewportWidth, viewportHeight ) {

+

+		var flares = scene.__webglFlares,

+			nFlares = flares.length;

+

+		if ( ! nFlares ) return;

+

+		var tempPosition = new THREE.Vector3();

+

+		var invAspect = viewportHeight / viewportWidth,

+			halfViewportWidth = viewportWidth * 0.5,

+			halfViewportHeight = viewportHeight * 0.5;

+

+		var size = 16 / viewportHeight,

+			scale = new THREE.Vector2( size * invAspect, size );

+

+		var screenPosition = new THREE.Vector3( 1, 1, 0 ),

+			screenPositionPixels = new THREE.Vector2( 1, 1 );

+

+		var uniforms = _lensFlare.uniforms,

+			attributes = _lensFlare.attributes;

+

+		// set _lensFlare program and reset blending

+

+		_gl.useProgram( _lensFlare.program );

+

+		_gl.enableVertexAttribArray( _lensFlare.attributes.vertex );

+		_gl.enableVertexAttribArray( _lensFlare.attributes.uv );

+

+		// loop through all lens flares to update their occlusion and positions

+		// setup gl and common used attribs/unforms

+

+		_gl.uniform1i( uniforms.occlusionMap, 0 );

+		_gl.uniform1i( uniforms.map, 1 );

+

+		_gl.bindBuffer( _gl.ARRAY_BUFFER, _lensFlare.vertexBuffer );

+		_gl.vertexAttribPointer( attributes.vertex, 2, _gl.FLOAT, false, 2 * 8, 0 );

+		_gl.vertexAttribPointer( attributes.uv, 2, _gl.FLOAT, false, 2 * 8, 8 );

+

+		_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, _lensFlare.elementBuffer );

+

+		_gl.disable( _gl.CULL_FACE );

+		_gl.depthMask( false );

+

+		var i, j, jl, flare, sprite;

+

+		for ( i = 0; i < nFlares; i ++ ) {

+

+			size = 16 / viewportHeight;

+			scale.set( size * invAspect, size );

+

+			// calc object screen position

+

+			flare = flares[ i ];

+

+			tempPosition.set( flare.matrixWorld.elements[12], flare.matrixWorld.elements[13], flare.matrixWorld.elements[14] );

+

+			tempPosition.applyMatrix4( camera.matrixWorldInverse );

+			tempPosition.applyProjection( camera.projectionMatrix );

+

+			// setup arrays for gl programs

+

+			screenPosition.copy( tempPosition )

+

+			screenPositionPixels.x = screenPosition.x * halfViewportWidth + halfViewportWidth;

+			screenPositionPixels.y = screenPosition.y * halfViewportHeight + halfViewportHeight;

+

+			// screen cull

+

+			if ( _lensFlare.hasVertexTexture || (

+				screenPositionPixels.x > 0 &&

+				screenPositionPixels.x < viewportWidth &&

+				screenPositionPixels.y > 0 &&

+				screenPositionPixels.y < viewportHeight ) ) {

+

+				// save current RGB to temp texture

+

+				_gl.activeTexture( _gl.TEXTURE1 );

+				_gl.bindTexture( _gl.TEXTURE_2D, _lensFlare.tempTexture );

+				_gl.copyTexImage2D( _gl.TEXTURE_2D, 0, _gl.RGB, screenPositionPixels.x - 8, screenPositionPixels.y - 8, 16, 16, 0 );

+

+

+				// render pink quad

+

+				_gl.uniform1i( uniforms.renderType, 0 );

+				_gl.uniform2f( uniforms.scale, scale.x, scale.y );

+				_gl.uniform3f( uniforms.screenPosition, screenPosition.x, screenPosition.y, screenPosition.z );

+

+				_gl.disable( _gl.BLEND );

+				_gl.enable( _gl.DEPTH_TEST );

+

+				_gl.drawElements( _gl.TRIANGLES, 6, _gl.UNSIGNED_SHORT, 0 );

+

+

+				// copy result to occlusionMap

+

+				_gl.activeTexture( _gl.TEXTURE0 );

+				_gl.bindTexture( _gl.TEXTURE_2D, _lensFlare.occlusionTexture );

+				_gl.copyTexImage2D( _gl.TEXTURE_2D, 0, _gl.RGBA, screenPositionPixels.x - 8, screenPositionPixels.y - 8, 16, 16, 0 );

+

+

+				// restore graphics

+

+				_gl.uniform1i( uniforms.renderType, 1 );

+				_gl.disable( _gl.DEPTH_TEST );

+

+				_gl.activeTexture( _gl.TEXTURE1 );

+				_gl.bindTexture( _gl.TEXTURE_2D, _lensFlare.tempTexture );

+				_gl.drawElements( _gl.TRIANGLES, 6, _gl.UNSIGNED_SHORT, 0 );

+

+

+				// update object positions

+

+				flare.positionScreen.copy( screenPosition )

+

+				if ( flare.customUpdateCallback ) {

+

+					flare.customUpdateCallback( flare );

+

+				} else {

+

+					flare.updateLensFlares();

+

+				}

+

+				// render flares

+

+				_gl.uniform1i( uniforms.renderType, 2 );

+				_gl.enable( _gl.BLEND );

+

+				for ( j = 0, jl = flare.lensFlares.length; j < jl; j ++ ) {

+

+					sprite = flare.lensFlares[ j ];

+

+					if ( sprite.opacity > 0.001 && sprite.scale > 0.001 ) {

+

+						screenPosition.x = sprite.x;

+						screenPosition.y = sprite.y;

+						screenPosition.z = sprite.z;

+

+						size = sprite.size * sprite.scale / viewportHeight;

+

+						scale.x = size * invAspect;

+						scale.y = size;

+

+						_gl.uniform3f( uniforms.screenPosition, screenPosition.x, screenPosition.y, screenPosition.z );

+						_gl.uniform2f( uniforms.scale, scale.x, scale.y );

+						_gl.uniform1f( uniforms.rotation, sprite.rotation );

+

+						_gl.uniform1f( uniforms.opacity, sprite.opacity );

+						_gl.uniform3f( uniforms.color, sprite.color.r, sprite.color.g, sprite.color.b );

+

+						_renderer.setBlending( sprite.blending, sprite.blendEquation, sprite.blendSrc, sprite.blendDst );

+						_renderer.setTexture( sprite.texture, 1 );

+

+						_gl.drawElements( _gl.TRIANGLES, 6, _gl.UNSIGNED_SHORT, 0 );

+

+					}

+

+				}

+

+			}

+

+		}

+

+		// restore gl

+

+		_gl.enable( _gl.CULL_FACE );

+		_gl.enable( _gl.DEPTH_TEST );

+		_gl.depthMask( true );

+

+	};

+

+	function createProgram ( shader, precision ) {

+

+		var program = _gl.createProgram();

+

+		var fragmentShader = _gl.createShader( _gl.FRAGMENT_SHADER );

+		var vertexShader = _gl.createShader( _gl.VERTEX_SHADER );

+

+		var prefix = "precision " + precision + " float;\n";

+

+		_gl.shaderSource( fragmentShader, prefix + shader.fragmentShader );

+		_gl.shaderSource( vertexShader, prefix + shader.vertexShader );

+

+		_gl.compileShader( fragmentShader );

+		_gl.compileShader( vertexShader );

+

+		_gl.attachShader( program, fragmentShader );

+		_gl.attachShader( program, vertexShader );

+

+		_gl.linkProgram( program );

+

+		return program;

+

+	};

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.ShadowMapPlugin = function () {

+

+	var _gl,

+	_renderer,

+	_depthMaterial, _depthMaterialMorph, _depthMaterialSkin, _depthMaterialMorphSkin,

+

+	_frustum = new THREE.Frustum(),

+	_projScreenMatrix = new THREE.Matrix4(),

+

+	_min = new THREE.Vector3(),

+	_max = new THREE.Vector3(),

+

+	_matrixPosition = new THREE.Vector3();

+

+	this.init = function ( renderer ) {

+

+		_gl = renderer.context;

+		_renderer = renderer;

+

+		var depthShader = THREE.ShaderLib[ "depthRGBA" ];

+		var depthUniforms = THREE.UniformsUtils.clone( depthShader.uniforms );

+

+		_depthMaterial = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms } );

+		_depthMaterialMorph = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms, morphTargets: true } );

+		_depthMaterialSkin = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms, skinning: true } );

+		_depthMaterialMorphSkin = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms, morphTargets: true, skinning: true } );

+

+		_depthMaterial._shadowPass = true;

+		_depthMaterialMorph._shadowPass = true;

+		_depthMaterialSkin._shadowPass = true;

+		_depthMaterialMorphSkin._shadowPass = true;

+

+	};

+

+	this.render = function ( scene, camera ) {

+

+		if ( ! ( _renderer.shadowMapEnabled && _renderer.shadowMapAutoUpdate ) ) return;

+

+		this.update( scene, camera );

+

+	};

+

+	this.update = function ( scene, camera ) {

+

+		var i, il, j, jl, n,

+

+		shadowMap, shadowMatrix, shadowCamera,

+		program, buffer, material,

+		webglObject, object, light,

+		renderList,

+

+		lights = [],

+		k = 0,

+

+		fog = null;

+

+		// set GL state for depth map

+

+		_gl.clearColor( 1, 1, 1, 1 );

+		_gl.disable( _gl.BLEND );

+

+		_gl.enable( _gl.CULL_FACE );

+		_gl.frontFace( _gl.CCW );

+

+		if ( _renderer.shadowMapCullFace === THREE.CullFaceFront ) {

+

+			_gl.cullFace( _gl.FRONT );

+

+		} else {

+

+			_gl.cullFace( _gl.BACK );

+

+		}

+

+		_renderer.setDepthTest( true );

+

+		// preprocess lights

+		// 	- skip lights that are not casting shadows

+		//	- create virtual lights for cascaded shadow maps

+

+		for ( i = 0, il = scene.__lights.length; i < il; i ++ ) {

+

+			light = scene.__lights[ i ];

+

+			if ( ! light.castShadow ) continue;

+

+			if ( ( light instanceof THREE.DirectionalLight ) && light.shadowCascade ) {

+

+				for ( n = 0; n < light.shadowCascadeCount; n ++ ) {

+

+					var virtualLight;

+

+					if ( ! light.shadowCascadeArray[ n ] ) {

+

+						virtualLight = createVirtualLight( light, n );

+						virtualLight.originalCamera = camera;

+

+						var gyro = new THREE.Gyroscope();

+						gyro.position = light.shadowCascadeOffset;

+

+						gyro.add( virtualLight );

+						gyro.add( virtualLight.target );

+

+						camera.add( gyro );

+

+						light.shadowCascadeArray[ n ] = virtualLight;

+

+						console.log( "Created virtualLight", virtualLight );

+

+					} else {

+

+						virtualLight = light.shadowCascadeArray[ n ];

+

+					}

+

+					updateVirtualLight( light, n );

+

+					lights[ k ] = virtualLight;

+					k ++;

+

+				}

+

+			} else {

+

+				lights[ k ] = light;

+				k ++;

+

+			}

+

+		}

+

+		// render depth map

+

+		for ( i = 0, il = lights.length; i < il; i ++ ) {

+

+			light = lights[ i ];

+

+			if ( ! light.shadowMap ) {

+

+				var shadowFilter = THREE.LinearFilter;

+

+				if ( _renderer.shadowMapType === THREE.PCFSoftShadowMap ) {

+

+					shadowFilter = THREE.NearestFilter;

+

+				}

+

+				var pars = { minFilter: shadowFilter, magFilter: shadowFilter, format: THREE.RGBAFormat };

+

+				light.shadowMap = new THREE.WebGLRenderTarget( light.shadowMapWidth, light.shadowMapHeight, pars );

+				light.shadowMapSize = new THREE.Vector2( light.shadowMapWidth, light.shadowMapHeight );

+

+				light.shadowMatrix = new THREE.Matrix4();

+

+			}

+

+			if ( ! light.shadowCamera ) {

+

+				if ( light instanceof THREE.SpotLight ) {

+

+					light.shadowCamera = new THREE.PerspectiveCamera( light.shadowCameraFov, light.shadowMapWidth / light.shadowMapHeight, light.shadowCameraNear, light.shadowCameraFar );

+

+				} else if ( light instanceof THREE.DirectionalLight ) {

+

+					light.shadowCamera = new THREE.OrthographicCamera( light.shadowCameraLeft, light.shadowCameraRight, light.shadowCameraTop, light.shadowCameraBottom, light.shadowCameraNear, light.shadowCameraFar );

+

+				} else {

+

+					console.error( "Unsupported light type for shadow" );

+					continue;

+

+				}

+

+				scene.add( light.shadowCamera );

+

+				if ( _renderer.autoUpdateScene ) scene.updateMatrixWorld();

+

+			}

+

+			if ( light.shadowCameraVisible && ! light.cameraHelper ) {

+

+				light.cameraHelper = new THREE.CameraHelper( light.shadowCamera );

+				light.shadowCamera.add( light.cameraHelper );

+

+			}

+

+			if ( light.isVirtual && virtualLight.originalCamera == camera ) {

+

+				updateShadowCamera( camera, light );

+

+			}

+

+			shadowMap = light.shadowMap;

+			shadowMatrix = light.shadowMatrix;

+			shadowCamera = light.shadowCamera;

+

+			shadowCamera.position.getPositionFromMatrix( light.matrixWorld );

+			_matrixPosition.getPositionFromMatrix( light.target.matrixWorld );

+			shadowCamera.lookAt( _matrixPosition );

+			shadowCamera.updateMatrixWorld();

+

+			shadowCamera.matrixWorldInverse.getInverse( shadowCamera.matrixWorld );

+

+			if ( light.cameraHelper ) light.cameraHelper.visible = light.shadowCameraVisible;

+			if ( light.shadowCameraVisible ) light.cameraHelper.update();

+

+			// compute shadow matrix

+

+			shadowMatrix.set( 0.5, 0.0, 0.0, 0.5,

+							  0.0, 0.5, 0.0, 0.5,

+							  0.0, 0.0, 0.5, 0.5,

+							  0.0, 0.0, 0.0, 1.0 );

+

+			shadowMatrix.multiply( shadowCamera.projectionMatrix );

+			shadowMatrix.multiply( shadowCamera.matrixWorldInverse );

+

+			// update camera matrices and frustum

+

+			_projScreenMatrix.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );

+			_frustum.setFromMatrix( _projScreenMatrix );

+

+			// render shadow map

+

+			_renderer.setRenderTarget( shadowMap );

+			_renderer.clear();

+

+			// set object matrices & frustum culling

+

+			renderList = scene.__webglObjects;

+

+			for ( j = 0, jl = renderList.length; j < jl; j ++ ) {

+

+				webglObject = renderList[ j ];

+				object = webglObject.object;

+

+				webglObject.render = false;

+

+				if ( object.visible && object.castShadow ) {

+

+					if ( ! ( object instanceof THREE.Mesh || object instanceof THREE.ParticleSystem ) || ! ( object.frustumCulled ) || _frustum.intersectsObject( object ) ) {

+

+						object._modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );

+

+						webglObject.render = true;

+

+					}

+

+				}

+

+			}

+

+			// render regular objects

+

+			var objectMaterial, useMorphing, useSkinning;

+

+			for ( j = 0, jl = renderList.length; j < jl; j ++ ) {

+

+				webglObject = renderList[ j ];

+

+				if ( webglObject.render ) {

+

+					object = webglObject.object;

+					buffer = webglObject.buffer;

+

+					// culling is overriden globally for all objects

+					// while rendering depth map

+

+					// need to deal with MeshFaceMaterial somehow

+					// in that case just use the first of material.materials for now

+					// (proper solution would require to break objects by materials

+					//  similarly to regular rendering and then set corresponding

+					//  depth materials per each chunk instead of just once per object)

+

+					objectMaterial = getObjectMaterial( object );

+

+					useMorphing = object.geometry.morphTargets.length > 0 && objectMaterial.morphTargets;

+					useSkinning = object instanceof THREE.SkinnedMesh && objectMaterial.skinning;

+

+					if ( object.customDepthMaterial ) {

+

+						material = object.customDepthMaterial;

+

+					} else if ( useSkinning ) {

+

+						material = useMorphing ? _depthMaterialMorphSkin : _depthMaterialSkin;

+

+					} else if ( useMorphing ) {

+

+						material = _depthMaterialMorph;

+

+					} else {

+

+						material = _depthMaterial;

+

+					}

+

+					if ( buffer instanceof THREE.BufferGeometry ) {

+

+						_renderer.renderBufferDirect( shadowCamera, scene.__lights, fog, material, buffer, object );

+

+					} else {

+

+						_renderer.renderBuffer( shadowCamera, scene.__lights, fog, material, buffer, object );

+

+					}

+

+				}

+

+			}

+

+			// set matrices and render immediate objects

+

+			renderList = scene.__webglObjectsImmediate;

+

+			for ( j = 0, jl = renderList.length; j < jl; j ++ ) {

+

+				webglObject = renderList[ j ];

+				object = webglObject.object;

+

+				if ( object.visible && object.castShadow ) {

+

+					object._modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );

+

+					_renderer.renderImmediateObject( shadowCamera, scene.__lights, fog, _depthMaterial, object );

+

+				}

+

+			}

+

+		}

+

+		// restore GL state

+

+		var clearColor = _renderer.getClearColor(),

+		clearAlpha = _renderer.getClearAlpha();

+

+		_gl.clearColor( clearColor.r, clearColor.g, clearColor.b, clearAlpha );

+		_gl.enable( _gl.BLEND );

+

+		if ( _renderer.shadowMapCullFace === THREE.CullFaceFront ) {

+

+			_gl.cullFace( _gl.BACK );

+

+		}

+

+	};

+

+	function createVirtualLight( light, cascade ) {

+

+		var virtualLight = new THREE.DirectionalLight();

+

+		virtualLight.isVirtual = true;

+

+		virtualLight.onlyShadow = true;

+		virtualLight.castShadow = true;

+

+		virtualLight.shadowCameraNear = light.shadowCameraNear;

+		virtualLight.shadowCameraFar = light.shadowCameraFar;

+

+		virtualLight.shadowCameraLeft = light.shadowCameraLeft;

+		virtualLight.shadowCameraRight = light.shadowCameraRight;

+		virtualLight.shadowCameraBottom = light.shadowCameraBottom;

+		virtualLight.shadowCameraTop = light.shadowCameraTop;

+

+		virtualLight.shadowCameraVisible = light.shadowCameraVisible;

+

+		virtualLight.shadowDarkness = light.shadowDarkness;

+

+		virtualLight.shadowBias = light.shadowCascadeBias[ cascade ];

+		virtualLight.shadowMapWidth = light.shadowCascadeWidth[ cascade ];

+		virtualLight.shadowMapHeight = light.shadowCascadeHeight[ cascade ];

+

+		virtualLight.pointsWorld = [];

+		virtualLight.pointsFrustum = [];

+

+		var pointsWorld = virtualLight.pointsWorld,

+			pointsFrustum = virtualLight.pointsFrustum;

+

+		for ( var i = 0; i < 8; i ++ ) {

+

+			pointsWorld[ i ] = new THREE.Vector3();

+			pointsFrustum[ i ] = new THREE.Vector3();

+

+		}

+

+		var nearZ = light.shadowCascadeNearZ[ cascade ];

+		var farZ = light.shadowCascadeFarZ[ cascade ];

+

+		pointsFrustum[ 0 ].set( -1, -1, nearZ );

+		pointsFrustum[ 1 ].set(  1, -1, nearZ );

+		pointsFrustum[ 2 ].set( -1,  1, nearZ );

+		pointsFrustum[ 3 ].set(  1,  1, nearZ );

+

+		pointsFrustum[ 4 ].set( -1, -1, farZ );

+		pointsFrustum[ 5 ].set(  1, -1, farZ );

+		pointsFrustum[ 6 ].set( -1,  1, farZ );

+		pointsFrustum[ 7 ].set(  1,  1, farZ );

+

+		return virtualLight;

+

+	}

+

+	// Synchronize virtual light with the original light

+

+	function updateVirtualLight( light, cascade ) {

+

+		var virtualLight = light.shadowCascadeArray[ cascade ];

+

+		virtualLight.position.copy( light.position );

+		virtualLight.target.position.copy( light.target.position );

+		virtualLight.lookAt( virtualLight.target );

+

+		virtualLight.shadowCameraVisible = light.shadowCameraVisible;

+		virtualLight.shadowDarkness = light.shadowDarkness;

+

+		virtualLight.shadowBias = light.shadowCascadeBias[ cascade ];

+

+		var nearZ = light.shadowCascadeNearZ[ cascade ];

+		var farZ = light.shadowCascadeFarZ[ cascade ];

+

+		var pointsFrustum = virtualLight.pointsFrustum;

+

+		pointsFrustum[ 0 ].z = nearZ;

+		pointsFrustum[ 1 ].z = nearZ;

+		pointsFrustum[ 2 ].z = nearZ;

+		pointsFrustum[ 3 ].z = nearZ;

+

+		pointsFrustum[ 4 ].z = farZ;

+		pointsFrustum[ 5 ].z = farZ;

+		pointsFrustum[ 6 ].z = farZ;

+		pointsFrustum[ 7 ].z = farZ;

+

+	}

+

+	// Fit shadow camera's ortho frustum to camera frustum

+

+	function updateShadowCamera( camera, light ) {

+

+		var shadowCamera = light.shadowCamera,

+			pointsFrustum = light.pointsFrustum,

+			pointsWorld = light.pointsWorld;

+

+		_min.set( Infinity, Infinity, Infinity );

+		_max.set( -Infinity, -Infinity, -Infinity );

+

+		for ( var i = 0; i < 8; i ++ ) {

+

+			var p = pointsWorld[ i ];

+

+			p.copy( pointsFrustum[ i ] );

+			THREE.ShadowMapPlugin.__projector.unprojectVector( p, camera );

+

+			p.applyMatrix4( shadowCamera.matrixWorldInverse );

+

+			if ( p.x < _min.x ) _min.x = p.x;

+			if ( p.x > _max.x ) _max.x = p.x;

+

+			if ( p.y < _min.y ) _min.y = p.y;

+			if ( p.y > _max.y ) _max.y = p.y;

+

+			if ( p.z < _min.z ) _min.z = p.z;

+			if ( p.z > _max.z ) _max.z = p.z;

+

+		}

+

+		shadowCamera.left = _min.x;

+		shadowCamera.right = _max.x;

+		shadowCamera.top = _max.y;

+		shadowCamera.bottom = _min.y;

+

+		// can't really fit near/far

+		//shadowCamera.near = _min.z;

+		//shadowCamera.far = _max.z;

+

+		shadowCamera.updateProjectionMatrix();

+

+	}

+

+	// For the moment just ignore objects that have multiple materials with different animation methods

+	// Only the first material will be taken into account for deciding which depth material to use for shadow maps

+

+	function getObjectMaterial( object ) {

+

+		return object.material instanceof THREE.MeshFaceMaterial

+			? object.material.materials[ 0 ]

+			: object.material;

+

+	};

+

+};

+

+THREE.ShadowMapPlugin.__projector = new THREE.Projector();

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.SpritePlugin = function () {

+

+	var _gl, _renderer, _precision, _sprite = {};

+

+	this.init = function ( renderer ) {

+

+		_gl = renderer.context;

+		_renderer = renderer;

+

+		_precision = renderer.getPrecision();

+

+		_sprite.vertices = new Float32Array( 8 + 8 );

+		_sprite.faces    = new Uint16Array( 6 );

+

+		var i = 0;

+

+		_sprite.vertices[ i++ ] = -1; _sprite.vertices[ i++ ] = -1;	// vertex 0

+		_sprite.vertices[ i++ ] = 0;  _sprite.vertices[ i++ ] = 0;	// uv 0

+

+		_sprite.vertices[ i++ ] = 1;  _sprite.vertices[ i++ ] = -1;	// vertex 1

+		_sprite.vertices[ i++ ] = 1;  _sprite.vertices[ i++ ] = 0;	// uv 1

+

+		_sprite.vertices[ i++ ] = 1;  _sprite.vertices[ i++ ] = 1;	// vertex 2

+		_sprite.vertices[ i++ ] = 1;  _sprite.vertices[ i++ ] = 1;	// uv 2

+

+		_sprite.vertices[ i++ ] = -1; _sprite.vertices[ i++ ] = 1;	// vertex 3

+		_sprite.vertices[ i++ ] = 0;  _sprite.vertices[ i++ ] = 1;	// uv 3

+

+		i = 0;

+

+		_sprite.faces[ i++ ] = 0; _sprite.faces[ i++ ] = 1; _sprite.faces[ i++ ] = 2;

+		_sprite.faces[ i++ ] = 0; _sprite.faces[ i++ ] = 2; _sprite.faces[ i++ ] = 3;

+

+		_sprite.vertexBuffer  = _gl.createBuffer();

+		_sprite.elementBuffer = _gl.createBuffer();

+

+		_gl.bindBuffer( _gl.ARRAY_BUFFER, _sprite.vertexBuffer );

+		_gl.bufferData( _gl.ARRAY_BUFFER, _sprite.vertices, _gl.STATIC_DRAW );

+

+		_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, _sprite.elementBuffer );

+		_gl.bufferData( _gl.ELEMENT_ARRAY_BUFFER, _sprite.faces, _gl.STATIC_DRAW );

+

+		_sprite.program = createProgram( THREE.ShaderSprite[ "sprite" ], _precision );

+

+		_sprite.attributes = {};

+		_sprite.uniforms = {};

+

+		_sprite.attributes.position           = _gl.getAttribLocation ( _sprite.program, "position" );

+		_sprite.attributes.uv                 = _gl.getAttribLocation ( _sprite.program, "uv" );

+

+		_sprite.uniforms.uvOffset             = _gl.getUniformLocation( _sprite.program, "uvOffset" );

+		_sprite.uniforms.uvScale              = _gl.getUniformLocation( _sprite.program, "uvScale" );

+

+		_sprite.uniforms.rotation             = _gl.getUniformLocation( _sprite.program, "rotation" );

+		_sprite.uniforms.scale                = _gl.getUniformLocation( _sprite.program, "scale" );

+		_sprite.uniforms.alignment            = _gl.getUniformLocation( _sprite.program, "alignment" );

+

+		_sprite.uniforms.color                = _gl.getUniformLocation( _sprite.program, "color" );

+		_sprite.uniforms.map                  = _gl.getUniformLocation( _sprite.program, "map" );

+		_sprite.uniforms.opacity              = _gl.getUniformLocation( _sprite.program, "opacity" );

+

+		_sprite.uniforms.useScreenCoordinates = _gl.getUniformLocation( _sprite.program, "useScreenCoordinates" );

+		_sprite.uniforms.sizeAttenuation   	  = _gl.getUniformLocation( _sprite.program, "sizeAttenuation" );

+		_sprite.uniforms.screenPosition    	  = _gl.getUniformLocation( _sprite.program, "screenPosition" );

+		_sprite.uniforms.modelViewMatrix      = _gl.getUniformLocation( _sprite.program, "modelViewMatrix" );

+		_sprite.uniforms.projectionMatrix     = _gl.getUniformLocation( _sprite.program, "projectionMatrix" );

+

+		_sprite.uniforms.fogType 		  	  = _gl.getUniformLocation( _sprite.program, "fogType" );

+		_sprite.uniforms.fogDensity 		  = _gl.getUniformLocation( _sprite.program, "fogDensity" );

+		_sprite.uniforms.fogNear 		  	  = _gl.getUniformLocation( _sprite.program, "fogNear" );

+		_sprite.uniforms.fogFar 		  	  = _gl.getUniformLocation( _sprite.program, "fogFar" );

+		_sprite.uniforms.fogColor 		  	  = _gl.getUniformLocation( _sprite.program, "fogColor" );

+

+		_sprite.uniforms.alphaTest 		  	  = _gl.getUniformLocation( _sprite.program, "alphaTest" );

+

+	};

+

+	this.render = function ( scene, camera, viewportWidth, viewportHeight ) {

+

+		var sprites = scene.__webglSprites,

+			nSprites = sprites.length;

+

+		if ( ! nSprites ) return;

+

+		var attributes = _sprite.attributes,

+			uniforms = _sprite.uniforms;

+

+		var invAspect = viewportHeight / viewportWidth;

+

+		var halfViewportWidth = viewportWidth * 0.5,

+			halfViewportHeight = viewportHeight * 0.5;

+

+		// setup gl

+

+		_gl.useProgram( _sprite.program );

+

+		_gl.enableVertexAttribArray( attributes.position );

+		_gl.enableVertexAttribArray( attributes.uv );

+

+		_gl.disable( _gl.CULL_FACE );

+		_gl.enable( _gl.BLEND );

+

+		_gl.bindBuffer( _gl.ARRAY_BUFFER, _sprite.vertexBuffer );

+		_gl.vertexAttribPointer( attributes.position, 2, _gl.FLOAT, false, 2 * 8, 0 );

+		_gl.vertexAttribPointer( attributes.uv, 2, _gl.FLOAT, false, 2 * 8, 8 );

+

+		_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, _sprite.elementBuffer );

+

+		_gl.uniformMatrix4fv( uniforms.projectionMatrix, false, camera.projectionMatrix.elements );

+

+		_gl.activeTexture( _gl.TEXTURE0 );

+		_gl.uniform1i( uniforms.map, 0 );

+

+		var oldFogType = 0;

+		var sceneFogType = 0;

+		var fog = scene.fog;

+

+		if ( fog ) {

+

+			_gl.uniform3f( uniforms.fogColor, fog.color.r, fog.color.g, fog.color.b );

+

+			if ( fog instanceof THREE.Fog ) {

+

+				_gl.uniform1f( uniforms.fogNear, fog.near );

+				_gl.uniform1f( uniforms.fogFar, fog.far );

+

+				_gl.uniform1i( uniforms.fogType, 1 );

+				oldFogType = 1;

+				sceneFogType = 1;

+

+			} else if ( fog instanceof THREE.FogExp2 ) {

+

+				_gl.uniform1f( uniforms.fogDensity, fog.density );

+

+				_gl.uniform1i( uniforms.fogType, 2 );

+				oldFogType = 2;

+				sceneFogType = 2;

+

+			}

+

+		} else {

+

+			_gl.uniform1i( uniforms.fogType, 0 );

+			oldFogType = 0;

+			sceneFogType = 0;

+

+		}

+

+

+		// update positions and sort

+

+		var i, sprite, material, screenPosition, size, fogType, scale = [];

+

+		for( i = 0; i < nSprites; i ++ ) {

+

+			sprite = sprites[ i ];

+			material = sprite.material;

+

+			if ( ! sprite.visible || material.opacity === 0 ) continue;

+

+			if ( ! material.useScreenCoordinates ) {

+

+				sprite._modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, sprite.matrixWorld );

+				sprite.z = - sprite._modelViewMatrix.elements[ 14 ];

+

+			} else {

+

+				sprite.z = - sprite.position.z;

+

+			}

+

+		}

+

+		sprites.sort( painterSortStable );

+

+		// render all sprites

+

+		for( i = 0; i < nSprites; i ++ ) {

+

+			sprite = sprites[ i ];

+			material = sprite.material;

+

+			if ( ! sprite.visible || material.opacity === 0 ) continue;

+

+			if ( material.map && material.map.image && material.map.image.width ) {

+

+				_gl.uniform1f( uniforms.alphaTest, material.alphaTest );

+

+				if ( material.useScreenCoordinates === true ) {

+

+					_gl.uniform1i( uniforms.useScreenCoordinates, 1 );

+					_gl.uniform3f(

+						uniforms.screenPosition,

+						( ( sprite.position.x * _renderer.devicePixelRatio ) - halfViewportWidth  ) / halfViewportWidth,

+						( halfViewportHeight - ( sprite.position.y * _renderer.devicePixelRatio ) ) / halfViewportHeight,

+						Math.max( 0, Math.min( 1, sprite.position.z ) )

+					);

+

+					scale[ 0 ] = _renderer.devicePixelRatio;

+					scale[ 1 ] = _renderer.devicePixelRatio;

+

+				} else {

+

+					_gl.uniform1i( uniforms.useScreenCoordinates, 0 );

+					_gl.uniform1i( uniforms.sizeAttenuation, material.sizeAttenuation ? 1 : 0 );

+					_gl.uniformMatrix4fv( uniforms.modelViewMatrix, false, sprite._modelViewMatrix.elements );

+

+					scale[ 0 ] = 1;

+					scale[ 1 ] = 1;

+

+				}

+

+				if ( scene.fog && material.fog ) {

+

+					fogType = sceneFogType;

+

+				} else {

+

+					fogType = 0;

+

+				}

+

+				if ( oldFogType !== fogType ) {

+

+					_gl.uniform1i( uniforms.fogType, fogType );

+					oldFogType = fogType;

+

+				}

+

+				size = 1 / ( material.scaleByViewport ? viewportHeight : 1 );

+

+				scale[ 0 ] *= size * invAspect * sprite.scale.x

+				scale[ 1 ] *= size * sprite.scale.y;

+

+				_gl.uniform2f( uniforms.uvScale, material.uvScale.x, material.uvScale.y );

+				_gl.uniform2f( uniforms.uvOffset, material.uvOffset.x, material.uvOffset.y );

+				_gl.uniform2f( uniforms.alignment, material.alignment.x, material.alignment.y );

+

+				_gl.uniform1f( uniforms.opacity, material.opacity );

+				_gl.uniform3f( uniforms.color, material.color.r, material.color.g, material.color.b );

+

+				_gl.uniform1f( uniforms.rotation, sprite.rotation );

+				_gl.uniform2fv( uniforms.scale, scale );

+

+				_renderer.setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst );

+				_renderer.setDepthTest( material.depthTest );

+				_renderer.setDepthWrite( material.depthWrite );

+				_renderer.setTexture( material.map, 0 );

+

+				_gl.drawElements( _gl.TRIANGLES, 6, _gl.UNSIGNED_SHORT, 0 );

+

+			}

+

+		}

+

+		// restore gl

+

+		_gl.enable( _gl.CULL_FACE );

+

+	};

+

+	function createProgram ( shader, precision ) {

+

+		var program = _gl.createProgram();

+

+		var fragmentShader = _gl.createShader( _gl.FRAGMENT_SHADER );

+		var vertexShader = _gl.createShader( _gl.VERTEX_SHADER );

+

+		var prefix = "precision " + precision + " float;\n";

+

+		_gl.shaderSource( fragmentShader, prefix + shader.fragmentShader );

+		_gl.shaderSource( vertexShader, prefix + shader.vertexShader );

+

+		_gl.compileShader( fragmentShader );

+		_gl.compileShader( vertexShader );

+

+		_gl.attachShader( program, fragmentShader );

+		_gl.attachShader( program, vertexShader );

+

+		_gl.linkProgram( program );

+

+		return program;

+

+	};

+

+	function painterSortStable ( a, b ) {

+

+		if ( a.z !== b.z ) {

+

+			return b.z - a.z;

+

+		} else {

+

+			return b.id - a.id;

+

+		}

+

+	};

+

+};

+/**

+ * @author alteredq / http://alteredqualia.com/

+ */

+

+THREE.DepthPassPlugin = function () {

+

+	this.enabled = false;

+	this.renderTarget = null;

+

+	var _gl,

+	_renderer,

+	_depthMaterial, _depthMaterialMorph, _depthMaterialSkin, _depthMaterialMorphSkin,

+

+	_frustum = new THREE.Frustum(),

+	_projScreenMatrix = new THREE.Matrix4();

+

+	this.init = function ( renderer ) {

+

+		_gl = renderer.context;

+		_renderer = renderer;

+

+		var depthShader = THREE.ShaderLib[ "depthRGBA" ];

+		var depthUniforms = THREE.UniformsUtils.clone( depthShader.uniforms );

+

+		_depthMaterial = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms } );

+		_depthMaterialMorph = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms, morphTargets: true } );

+		_depthMaterialSkin = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms, skinning: true } );

+		_depthMaterialMorphSkin = new THREE.ShaderMaterial( { fragmentShader: depthShader.fragmentShader, vertexShader: depthShader.vertexShader, uniforms: depthUniforms, morphTargets: true, skinning: true } );

+

+		_depthMaterial._shadowPass = true;

+		_depthMaterialMorph._shadowPass = true;

+		_depthMaterialSkin._shadowPass = true;

+		_depthMaterialMorphSkin._shadowPass = true;

+

+	};

+

+	this.render = function ( scene, camera ) {

+

+		if ( ! this.enabled ) return;

+

+		this.update( scene, camera );

+

+	};

+

+	this.update = function ( scene, camera ) {

+

+		var i, il, j, jl, n,

+

+		program, buffer, material,

+		webglObject, object, light,

+		renderList,

+

+		fog = null;

+

+		// set GL state for depth map

+

+		_gl.clearColor( 1, 1, 1, 1 );

+		_gl.disable( _gl.BLEND );

+

+		_renderer.setDepthTest( true );

+

+		// update scene

+

+		if ( _renderer.autoUpdateScene ) scene.updateMatrixWorld();

+

+		// update camera matrices and frustum

+

+		camera.matrixWorldInverse.getInverse( camera.matrixWorld );

+

+		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );

+		_frustum.setFromMatrix( _projScreenMatrix );

+

+		// render depth map

+

+		_renderer.setRenderTarget( this.renderTarget );

+		_renderer.clear();

+

+		// set object matrices & frustum culling

+

+		renderList = scene.__webglObjects;

+

+		for ( j = 0, jl = renderList.length; j < jl; j ++ ) {

+

+			webglObject = renderList[ j ];

+			object = webglObject.object;

+

+			webglObject.render = false;

+

+			if ( object.visible ) {

+

+				if ( ! ( object instanceof THREE.Mesh || object instanceof THREE.ParticleSystem ) || ! ( object.frustumCulled ) || _frustum.intersectsObject( object ) ) {

+

+					object._modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );

+

+					webglObject.render = true;

+

+				}

+

+			}

+

+		}

+

+		// render regular objects

+

+		var objectMaterial, useMorphing, useSkinning;

+

+		for ( j = 0, jl = renderList.length; j < jl; j ++ ) {

+

+			webglObject = renderList[ j ];

+

+			if ( webglObject.render ) {

+

+				object = webglObject.object;

+				buffer = webglObject.buffer;

+

+				// todo: create proper depth material for particles

+

+				if ( object instanceof THREE.ParticleSystem && !object.customDepthMaterial ) continue;

+

+				objectMaterial = getObjectMaterial( object );

+

+				if ( objectMaterial ) _renderer.setMaterialFaces( object.material );

+

+				useMorphing = object.geometry.morphTargets.length > 0 && objectMaterial.morphTargets;

+				useSkinning = object instanceof THREE.SkinnedMesh && objectMaterial.skinning;

+

+				if ( object.customDepthMaterial ) {

+

+					material = object.customDepthMaterial;

+

+				} else if ( useSkinning ) {

+

+					material = useMorphing ? _depthMaterialMorphSkin : _depthMaterialSkin;

+

+				} else if ( useMorphing ) {

+

+					material = _depthMaterialMorph;

+

+				} else {

+

+					material = _depthMaterial;

+

+				}

+

+				if ( buffer instanceof THREE.BufferGeometry ) {

+

+					_renderer.renderBufferDirect( camera, scene.__lights, fog, material, buffer, object );

+

+				} else {

+

+					_renderer.renderBuffer( camera, scene.__lights, fog, material, buffer, object );

+

+				}

+

+			}

+

+		}

+

+		// set matrices and render immediate objects

+

+		renderList = scene.__webglObjectsImmediate;

+

+		for ( j = 0, jl = renderList.length; j < jl; j ++ ) {

+

+			webglObject = renderList[ j ];

+			object = webglObject.object;

+

+			if ( object.visible ) {

+

+				object._modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );

+

+				_renderer.renderImmediateObject( camera, scene.__lights, fog, _depthMaterial, object );

+

+			}

+

+		}

+

+		// restore GL state

+

+		var clearColor = _renderer.getClearColor(),

+		clearAlpha = _renderer.getClearAlpha();

+

+		_gl.clearColor( clearColor.r, clearColor.g, clearColor.b, clearAlpha );

+		_gl.enable( _gl.BLEND );

+

+	};

+

+	// For the moment just ignore objects that have multiple materials with different animation methods

+	// Only the first material will be taken into account for deciding which depth material to use

+

+	function getObjectMaterial( object ) {

+

+		return object.material instanceof THREE.MeshFaceMaterial

+			? object.material.materials[ 0 ]

+			: object.material;

+

+	};

+

+};

+

+/**

+ * @author mikael emtinger / http://gomo.se/

+ *

+ */

+

+THREE.ShaderFlares = {

+

+	'lensFlareVertexTexture': {

+

+		vertexShader: [

+

+			"uniform lowp int renderType;",

+

+			"uniform vec3 screenPosition;",

+			"uniform vec2 scale;",

+			"uniform float rotation;",

+

+			"uniform sampler2D occlusionMap;",

+

+			"attribute vec2 position;",

+			"attribute vec2 uv;",

+

+			"varying vec2 vUV;",

+			"varying float vVisibility;",

+

+			"void main() {",

+

+				"vUV = uv;",

+

+				"vec2 pos = position;",

+

+				"if( renderType == 2 ) {",

+

+					"vec4 visibility = texture2D( occlusionMap, vec2( 0.1, 0.1 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.5, 0.1 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.9, 0.1 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.9, 0.5 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.9, 0.9 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.5, 0.9 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.1, 0.9 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.1, 0.5 ) ) +",

+									  "texture2D( occlusionMap, vec2( 0.5, 0.5 ) );",

+

+					"vVisibility = (       visibility.r / 9.0 ) *",

+								  "( 1.0 - visibility.g / 9.0 ) *",

+								  "(       visibility.b / 9.0 ) *",

+								  "( 1.0 - visibility.a / 9.0 );",

+

+					"pos.x = cos( rotation ) * position.x - sin( rotation ) * position.y;",

+					"pos.y = sin( rotation ) * position.x + cos( rotation ) * position.y;",

+

+				"}",

+

+				"gl_Position = vec4( ( pos * scale + screenPosition.xy ).xy, screenPosition.z, 1.0 );",

+

+			"}"

+

+		].join( "\n" ),

+

+		fragmentShader: [

+

+			"uniform lowp int renderType;",

+

+			"uniform sampler2D map;",

+			"uniform float opacity;",

+			"uniform vec3 color;",

+

+			"varying vec2 vUV;",

+			"varying float vVisibility;",

+

+			"void main() {",

+

+				// pink square

+

+				"if( renderType == 0 ) {",

+

+					"gl_FragColor = vec4( 1.0, 0.0, 1.0, 0.0 );",

+

+				// restore

+

+				"} else if( renderType == 1 ) {",

+

+					"gl_FragColor = texture2D( map, vUV );",

+

+				// flare

+

+				"} else {",

+

+					"vec4 texture = texture2D( map, vUV );",

+					"texture.a *= opacity * vVisibility;",

+					"gl_FragColor = texture;",

+					"gl_FragColor.rgb *= color;",

+

+				"}",

+

+			"}"

+		].join( "\n" )

+

+	},

+

+

+	'lensFlare': {

+

+		vertexShader: [

+

+			"uniform lowp int renderType;",

+

+			"uniform vec3 screenPosition;",

+			"uniform vec2 scale;",

+			"uniform float rotation;",

+

+			"attribute vec2 position;",

+			"attribute vec2 uv;",

+

+			"varying vec2 vUV;",

+

+			"void main() {",

+

+				"vUV = uv;",

+

+				"vec2 pos = position;",

+

+				"if( renderType == 2 ) {",

+

+					"pos.x = cos( rotation ) * position.x - sin( rotation ) * position.y;",

+					"pos.y = sin( rotation ) * position.x + cos( rotation ) * position.y;",

+

+				"}",

+

+				"gl_Position = vec4( ( pos * scale + screenPosition.xy ).xy, screenPosition.z, 1.0 );",

+

+			"}"

+

+		].join( "\n" ),

+

+		fragmentShader: [

+

+			"precision mediump float;",

+

+			"uniform lowp int renderType;",

+

+			"uniform sampler2D map;",

+			"uniform sampler2D occlusionMap;",

+			"uniform float opacity;",

+			"uniform vec3 color;",

+

+			"varying vec2 vUV;",

+

+			"void main() {",

+

+				// pink square

+

+				"if( renderType == 0 ) {",

+

+					"gl_FragColor = vec4( texture2D( map, vUV ).rgb, 0.0 );",

+

+				// restore

+

+				"} else if( renderType == 1 ) {",

+

+					"gl_FragColor = texture2D( map, vUV );",

+

+				// flare

+

+				"} else {",

+

+					"float visibility = texture2D( occlusionMap, vec2( 0.5, 0.1 ) ).a +",

+									   "texture2D( occlusionMap, vec2( 0.9, 0.5 ) ).a +",

+									   "texture2D( occlusionMap, vec2( 0.5, 0.9 ) ).a +",

+									   "texture2D( occlusionMap, vec2( 0.1, 0.5 ) ).a;",

+

+					"visibility = ( 1.0 - visibility / 4.0 );",

+

+					"vec4 texture = texture2D( map, vUV );",

+					"texture.a *= opacity * visibility;",

+					"gl_FragColor = texture;",

+					"gl_FragColor.rgb *= color;",

+

+				"}",

+

+			"}"

+

+		].join( "\n" )

+

+	}

+

+};

+/**

+ * @author mikael emtinger / http://gomo.se/

+ * @author alteredq / http://alteredqualia.com/

+ *

+ */

+

+THREE.ShaderSprite = {

+

+	'sprite': {

+

+		vertexShader: [

+

+			"uniform int useScreenCoordinates;",

+			"uniform int sizeAttenuation;",

+			"uniform vec3 screenPosition;",

+			"uniform mat4 modelViewMatrix;",

+			"uniform mat4 projectionMatrix;",

+			"uniform float rotation;",

+			"uniform vec2 scale;",

+			"uniform vec2 alignment;",

+			"uniform vec2 uvOffset;",

+			"uniform vec2 uvScale;",

+

+			"attribute vec2 position;",

+			"attribute vec2 uv;",

+

+			"varying vec2 vUV;",

+

+			"void main() {",

+

+				"vUV = uvOffset + uv * uvScale;",

+

+				"vec2 alignedPosition = position + alignment;",

+

+				"vec2 rotatedPosition;",

+				"rotatedPosition.x = ( cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y ) * scale.x;",

+				"rotatedPosition.y = ( sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y ) * scale.y;",

+

+				"vec4 finalPosition;",

+

+				"if( useScreenCoordinates != 0 ) {",

+

+					"finalPosition = vec4( screenPosition.xy + rotatedPosition, screenPosition.z, 1.0 );",

+

+				"} else {",

+

+					"finalPosition = projectionMatrix * modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );",

+					"finalPosition.xy += rotatedPosition * ( sizeAttenuation == 1 ? 1.0 : finalPosition.z );",

+

+				"}",

+

+				"gl_Position = finalPosition;",

+

+			"}"

+

+		].join( "\n" ),

+

+		fragmentShader: [

+

+			"uniform vec3 color;",

+			"uniform sampler2D map;",

+			"uniform float opacity;",

+

+			"uniform int fogType;",

+			"uniform vec3 fogColor;",

+			"uniform float fogDensity;",

+			"uniform float fogNear;",

+			"uniform float fogFar;",

+			"uniform float alphaTest;",

+

+			"varying vec2 vUV;",

+

+			"void main() {",

+

+				"vec4 texture = texture2D( map, vUV );",

+

+				"if ( texture.a < alphaTest ) discard;",

+

+				"gl_FragColor = vec4( color * texture.xyz, texture.a * opacity );",

+

+				"if ( fogType > 0 ) {",

+

+					"float depth = gl_FragCoord.z / gl_FragCoord.w;",

+					"float fogFactor = 0.0;",

+

+					"if ( fogType == 1 ) {",

+

+						"fogFactor = smoothstep( fogNear, fogFar, depth );",

+

+					"} else {",

+

+						"const float LOG2 = 1.442695;",

+						"float fogFactor = exp2( - fogDensity * fogDensity * depth * depth * LOG2 );",

+						"fogFactor = 1.0 - clamp( fogFactor, 0.0, 1.0 );",

+

+					"}",

+

+					"gl_FragColor = mix( gl_FragColor, vec4( fogColor, gl_FragColor.w ), fogFactor );",

+

+				"}",

+

+			"}"

+

+		].join( "\n" )

+

+	}

+

+};

+

+// Export the THREE object for **Node.js**, with

+// backwards-compatibility for the old `require()` API. If we're in

+// the browser, add `_` as a global object via a string identifier,

+// for Closure Compiler "advanced" mode.

+if (typeof exports !== 'undefined') {

+  if (typeof module !== 'undefined' && module.exports) {

+    exports = module.exports = THREE;

+  }

+  exports.THREE = THREE;

+} else {

+  this['THREE'] = THREE;

+}

+
+}).call(this,require('_process'))
+},{"_process":74}],29:[function(require,module,exports){
+/*
+ * tic
+ * https://github.com/shama/tic
+ *
+ * Copyright (c) 2013 Kyle Robinson Young
+ * Licensed under the MIT license.
+ */
+
+function Tic() { this._things = []; }
+module.exports = function() { return new Tic(); };
+
+Tic.prototype._stack = function(thing) {
+  var self = this;
+  self._things.push(thing);
+  var i = self._things.length - 1;
+  return function() { delete self._things[i]; }
+};
+
+Tic.prototype.interval = Tic.prototype.setInterval = function(fn, at) {
+  return this._stack({
+    fn: fn, at: at, args: Array.prototype.slice.call(arguments, 2),
+    elapsed: 0, once: false
+  });
+};
+
+Tic.prototype.timeout = Tic.prototype.setTimeout = function(fn, at) {
+  return this._stack({
+    fn: fn, at: at, args: Array.prototype.slice.call(arguments, 2),
+    elapsed: 0, once: true
+  });
+};
+
+Tic.prototype.tick = function(dt) {
+  var self = this;
+  self._things.forEach(function(thing, i) {
+    thing.elapsed += dt;
+    if (thing.elapsed > thing.at) {
+      thing.elapsed -= thing.at;
+      thing.fn.apply(thing.fn, thing.args || []);
+      if (thing.once) {
+        delete self._things[i];
+      }
+    }
+  });
+};
+
+},{}],30:[function(require,module,exports){
+module.exports = control
+
+var Stream = require('stream').Stream
+
+function control(control_state, opts) {
+  return new Control(control_state, opts)
+}
+
+function Control(state, opts) {
+  Stream.call(this)
+
+  opts = opts || {}
+
+  this.state = state
+  this._pitch_target = 
+  this._yaw_target =
+  this._roll_target =
+  this._target = null
+  this.speed = opts.speed || 0.0032
+  this.max_speed = opts.maxSpeed || 0.0112
+  this.jump_max_speed = opts.jumpMaxSpeed || 0.016
+  this.jump_max_timer = opts.jumpTimer || 200
+  this.jump_speed = opts.jumpSpeed || 0.004
+  this.jump_timer = this.jump_timer_max
+  this.jumping = false
+  this.acceleration = opts.accelerationCurve || this.acceleration
+
+  this.fire_rate = opts.fireRate || 0
+  this.needs_discrete_fire = opts.discreteFire || false
+  this.onfire = opts.onfire || this.onfire
+  this.firing = 0
+
+  this.x_rotation_per_ms = opts.rotationXMax || opts.rotationMax || 33
+  this.y_rotation_per_ms = opts.rotationYMax || opts.rotationMax || 33
+  this.z_rotation_per_ms = opts.rotationZMax || opts.rotationMax || 33
+
+  this.x_rotation_clamp = opts.rotationXClamp || Math.PI / 2
+  this.y_rotation_clamp = opts.rotationYClamp || Infinity
+  this.z_rotation_clamp = opts.rotationZClamp || 0
+
+  this.rotation_scale = opts.rotationScale || 0.002
+
+  this.air_control = 'airControl' in opts ? opts.airControl : true
+
+  this.state.x_rotation_accum =
+  this.state.y_rotation_accum = 
+  this.state.z_rotation_accum = 0.0
+
+  this.accel_max_timer = opts.accelTimer || 200
+  this.x_accel_timer = this.accel_max_timer+0
+  this.z_accel_timer = this.accel_max_timer+0
+
+  this.readable =
+  this.writable = true
+
+  this.buffer = []
+  this.paused = false
+}
+
+var cons = Control
+  , proto = cons.prototype = new Stream
+
+proto.constructor = cons
+
+var max = Math.max
+  , min = Math.min
+  , sin = Math.sin
+  , abs = Math.abs
+  , floor = Math.floor
+  , PI = Math.PI
+
+proto.tick = function(dt) {
+  if(!this._target) {
+    return
+  }
+  var state = this.state
+    , target = this._target
+    , speed = this.speed
+    , jump_speed = this.jump_speed
+    , okay_z = abs(target.velocity.z) < this.max_speed
+    , okay_x = abs(target.velocity.x) < this.max_speed
+    , at_rest = target.atRestY()
+
+  if(!this._target) return
+
+  if(state.forward || state.backward) {
+    this.z_accel_timer = max(0, this.z_accel_timer - dt)
+  }
+  if(state.backward) {
+    if(target.velocity.z < this.max_speed)
+      target.velocity.z = max(min(this.max_speed, speed * dt * this.acceleration(this.z_accel_timer, this.accel_max_timer)), target.velocity.z)
+  } else if(state.forward) {
+    if(target.velocity.z > -this.max_speed)
+      target.velocity.z = min(max(-this.max_speed, -speed * dt * this.acceleration(this.z_accel_timer, this.accel_max_timer)), target.velocity.z)
+  } else {
+    this.z_accel_timer = this.accel_max_timer
+
+  }
+ 
+
+  if(state.left || state.right) {
+    this.x_accel_timer = max(0, this.x_accel_timer - dt)
+  }
+
+  if(state.right) {
+    if(target.velocity.x < this.max_speed)
+      target.velocity.x = max(min(this.max_speed, speed * dt * this.acceleration(this.x_accel_timer, this.accel_max_timer)), target.velocity.x)
+  } else if(state.left) {
+    if(target.velocity.x > -this.max_speed)
+      target.velocity.x = min(max(-this.max_speed, -speed * dt * this.acceleration(this.x_accel_timer, this.accel_max_timer)), target.velocity.x)
+  } else {
+    this.x_accel_timer = this.accel_max_timer
+  }
+
+  if(state.jump) {
+    if(!this.jumping && !at_rest) {
+      // we're falling, we can't jump
+    } else if(at_rest > 0) {
+      // we hit our head
+      this.jumping = false
+    } else {
+      this.jumping = true
+      if(this.jump_timer > 0) {
+        target.velocity.y = min(target.velocity.y + jump_speed * min(dt, this.jump_timer), this.jump_max_speed)
+      }
+      this.jump_timer = max(this.jump_timer - dt, 0)
+    }
+  } else {
+    this.jumping = false
+  }
+  this.jump_timer = at_rest < 0 ? this.jump_max_timer : this.jump_timer
+
+  var can_fire = true
+
+  if(state.fire || state.firealt) {
+    if(this.firing && this.needs_discrete_fire) {
+      this.firing += dt
+    } else {
+      if(!this.fire_rate || floor(this.firing / this.fire_rate) !== floor((this.firing + dt) / this.fire_rate)) {
+        this.onfire(state)
+      }
+      this.firing += dt
+    }
+  } else {
+    this.firing = 0
+  }
+
+  var x_rotation = this.state.x_rotation_accum * this.rotation_scale
+    , y_rotation = this.state.y_rotation_accum * this.rotation_scale
+    , z_rotation = this.state.z_rotation_accum * this.rotation_scale
+    , pitch_target = this._pitch_target
+    , yaw_target = this._yaw_target
+    , roll_target = this._roll_target
+
+  pitch_target.rotation.x = clamp(pitch_target.rotation.x + clamp(x_rotation, this.x_rotation_per_ms), this.x_rotation_clamp)
+  yaw_target.rotation.y = clamp(yaw_target.rotation.y + clamp(y_rotation, this.y_rotation_per_ms), this.y_rotation_clamp)
+  roll_target.rotation.z = clamp(roll_target.rotation.z + clamp(z_rotation, this.z_rotation_per_ms), this.z_rotation_clamp)
+
+  if(this.listeners('data').length) {
+    this.emitUpdate()
+  }
+
+  this.state.x_rotation_accum =
+  this.state.y_rotation_accum =
+  this.state.z_rotation_accum = 0
+}
+
+proto.write = function(changes) {
+  for(var key in changes) {
+    this.state[key] = changes[key]
+  }
+}
+
+proto.end = function(deltas) {
+  if(deltas) {
+    this.write(deltas)
+  }
+}
+
+proto.createWriteRotationStream = function() {
+  var state = this.state
+    , stream = new Stream
+
+  state.x_rotation_accum =
+  state.y_rotation_accum =
+  state.z_rotation_accum = 0
+
+  stream.writable = true
+  stream.write = write
+  stream.end = end
+
+  return stream
+
+  function write(changes) {
+    state.x_rotation_accum -= changes.dy || 0
+    state.y_rotation_accum -= changes.dx || 0
+    state.z_rotation_accum += changes.dz || 0
+  }
+
+  function end(deltas) {
+    if(deltas) {
+      stream.write(deltas)
+    }
+  }
+}
+
+proto.emitUpdate = function() {
+  return this.queue({
+      x_rotation_accum: this.state.x_rotation_accum
+    , y_rotation_accum: this.state.y_rotation_accum
+    , z_rotation_accum: this.state.z_rotation_accum
+    , forward: this.state.forward
+    , backward: this.state.backward
+    , left: this.state.left
+    , right: this.state.right
+    , fire: this.state.fire
+    , firealt: this.state.firealt
+    , jump: this.state.jump
+  })
+}
+
+proto.drain = function() {
+  var buf = this.buffer
+    , data
+
+  while(buf.length && !this.paused) {
+    data = buf.shift()
+    if(null === data) {
+      return this.emit('end')
+    }
+    this.emit('data', data)
+  }
+}
+
+proto.resume = function() {
+  this.paused = false
+  this.drain()
+
+  if(!this.paused) {
+    this.emit('drain')
+  }
+  return this
+}
+
+proto.pause = function() {
+  if(this.paused) return
+
+  this.paused = true
+  this.emit('pause')
+  return this
+}
+
+proto.queue = function(data) {
+  this.buffer.push(data)
+  this.drain()
+  return this
+}
+
+proto.acceleration = function(current, max) {
+  // max -> 0
+  var pct = (max - current) / max
+  return sin(PI/2*pct)
+}
+
+proto.target = function(target) {
+  if(target) {
+    this._target = target
+    this._yaw_target = target.yaw || target
+    this._pitch_target = target.pitch || target
+    this._roll_target = target.roll || target
+  }
+  return this._target
+}
+
+proto.onfire = function(_) {
+
+}
+
+function clamp(value, to) {
+  return isFinite(to) ? max(min(value, to), -to) : value
+}
+
+},{"stream":86}],31:[function(require,module,exports){
+var THREE = require('three')
+
+module.exports = function(data, mesher, scaleFactor, three) {
+  return new Mesh(data, mesher, scaleFactor, three)
+}
+
+module.exports.Mesh = Mesh
+
+function Mesh(data, mesher, scaleFactor, three) {
+  this.THREE = three || THREE
+  this.data = data
+  var geometry = this.geometry = new this.THREE.Geometry()
+  this.scale = scaleFactor || new this.THREE.Vector3(10, 10, 10)
+  
+  var result = mesher( data.voxels, data.dims )
+  this.meshed = result
+
+  geometry.vertices.length = 0
+  geometry.faces.length = 0
+
+  for (var i = 0; i < result.vertices.length; ++i) {
+    var q = result.vertices[i]
+    geometry.vertices.push(new this.THREE.Vector3(q[0], q[1], q[2]))
+  } 
+  
+  for (var i = 0; i < result.faces.length; ++i) {
+    geometry.faceVertexUvs[0].push(this.faceVertexUv(i))
+    
+    var q = result.faces[i]
+    if (q.length === 5) {
+      var f = new this.THREE.Face4(q[0], q[1], q[2], q[3])
+      f.color = new this.THREE.Color(q[4])
+      geometry.faces.push(f)
+    } else if (q.length == 4) {
+      var f = new this.THREE.Face3(q[0], q[1], q[2])
+      f.color = new this.THREE.Color(q[3])
+      geometry.faces.push(f)
+    }
+  }
+  
+  geometry.computeFaceNormals()
+
+  // compute vertex colors for ambient occlusion
+  var light = new THREE.Color(0xffffff)
+  var shadow = new THREE.Color(0x505050)
+  for (var i = 0; i < geometry.faces.length; ++i) {
+    var face = geometry.faces[i]
+    // facing up
+    if (face.normal.y === 1)       face.vertexColors = [light, light, light, light]
+    // facing down
+    else if (face.normal.y === -1) face.vertexColors = [shadow, shadow, shadow, shadow]
+    // facing right
+    else if (face.normal.x === 1)  face.vertexColors = [shadow, light, light, shadow]
+    // facing left
+    else if (face.normal.x === -1) face.vertexColors = [shadow, shadow, light, light]
+    // facing backward
+    else if (face.normal.z === 1)  face.vertexColors = [shadow, shadow, light, light]
+    // facing forward
+    else                           face.vertexColors = [shadow, light, light, shadow]
+  }
+
+  geometry.verticesNeedUpdate = true
+  geometry.elementsNeedUpdate = true
+  geometry.normalsNeedUpdate = true
+
+  geometry.computeBoundingBox()
+  geometry.computeBoundingSphere()
+
+}
+
+Mesh.prototype.createWireMesh = function(hexColor) {    
+  var wireMaterial = new this.THREE.MeshBasicMaterial({
+    color : hexColor || 0xffffff,
+    wireframe : true
+  })
+  wireMesh = new THREE.Mesh(this.geometry, wireMaterial)
+  wireMesh.scale = this.scale
+  wireMesh.doubleSided = true
+  this.wireMesh = wireMesh
+  return wireMesh
+}
+
+Mesh.prototype.createSurfaceMesh = function(material) {
+  material = material || new this.THREE.MeshNormalMaterial()
+  var surfaceMesh  = new this.THREE.Mesh( this.geometry, material )
+  surfaceMesh.scale = this.scale
+  surfaceMesh.doubleSided = false
+  this.surfaceMesh = surfaceMesh
+  return surfaceMesh
+}
+
+Mesh.prototype.addToScene = function(scene) {
+  if (this.wireMesh) scene.add( this.wireMesh )
+  if (this.surfaceMesh) scene.add( this.surfaceMesh )
+}
+
+Mesh.prototype.setPosition = function(x, y, z) {
+  if (this.wireMesh) this.wireMesh.position = new this.THREE.Vector3(x, y, z)
+  if (this.surfaceMesh) this.surfaceMesh.position = new this.THREE.Vector3(x, y, z)
+}
+
+Mesh.prototype.faceVertexUv = function(i) {
+  var vs = [
+    this.meshed.vertices[i*4+0],
+    this.meshed.vertices[i*4+1],
+    this.meshed.vertices[i*4+2],
+    this.meshed.vertices[i*4+3]
+  ]
+  var spans = {
+    x0: vs[0][0] - vs[1][0],
+    x1: vs[1][0] - vs[2][0],
+    y0: vs[0][1] - vs[1][1],
+    y1: vs[1][1] - vs[2][1],
+    z0: vs[0][2] - vs[1][2],
+    z1: vs[1][2] - vs[2][2]
+  }
+  var size = {
+    x: Math.max(Math.abs(spans.x0), Math.abs(spans.x1)),
+    y: Math.max(Math.abs(spans.y0), Math.abs(spans.y1)),
+    z: Math.max(Math.abs(spans.z0), Math.abs(spans.z1))
+  }
+  if (size.x === 0) {
+    if (spans.y0 > spans.y1) {
+      var width = size.y
+      var height = size.z
+    }
+    else {
+      var width = size.z
+      var height = size.y
+    }
+  }
+  if (size.y === 0) {
+    if (spans.x0 > spans.x1) {
+      var width = size.x
+      var height = size.z
+    }
+    else {
+      var width = size.z
+      var height = size.x
+    }
+  }
+  if (size.z === 0) {
+    if (spans.x0 > spans.x1) {
+      var width = size.x
+      var height = size.y
+    }
+    else {
+      var width = size.y
+      var height = size.x
+    }
+  }
+  if ((size.z === 0 && spans.x0 < spans.x1) || (size.x === 0 && spans.y0 > spans.y1)) {
+    return [
+      new this.THREE.Vector2(height, 0),
+      new this.THREE.Vector2(0, 0),
+      new this.THREE.Vector2(0, width),
+      new this.THREE.Vector2(height, width)
+    ]
+  } else {
+    return [
+      new this.THREE.Vector2(0, 0),
+      new this.THREE.Vector2(0, height),
+      new this.THREE.Vector2(width, height),
+      new this.THREE.Vector2(width, 0)
+    ]
+  }
+}
+;
+
+},{"three":28}],32:[function(require,module,exports){
+module.exports = physical
+
+var aabb = require('aabb-3d')
+  , THREE = require('three')
+
+function physical(avatar, collidables, dimensions, terminal) {
+  return new Physical(avatar, collidables, dimensions, terminal)
+}
+
+function Physical(avatar, collidables, dimensions, terminal) {
+  this.avatar = avatar
+  this.terminal = terminal || new THREE.Vector3(0.9, 0.1, 0.9)
+  this.dimensions = dimensions = dimensions || [1, 1, 1]
+  this._aabb = aabb([0, 0, 0], dimensions)
+  this.resting = {x: false, y: false, z: false}
+  this.collidables = collidables
+  this.friction = new THREE.Vector3(1, 1, 1)
+
+  this.rotation = this.avatar.rotation
+  this.default_friction = 1
+
+  // default yaw/pitch/roll controls to the avatar
+  this.yaw =
+  this.pitch =
+  this.roll = avatar
+
+  this.forces = new THREE.Vector3(0, 0, 0)
+  this.attractors = []
+  this.acceleration = new THREE.Vector3(0, 0, 0)
+  this.velocity = new THREE.Vector3(0, 0, 0)
+}
+
+var cons = Physical
+  , proto = cons.prototype
+  , axes = ['x', 'y', 'z']
+  , abs = Math.abs
+
+// make these *once*, so we're not generating
+// garbage for every object in the game.
+var WORLD_DESIRED = new THREE.Vector3(0, 0, 0)
+  , DESIRED = new THREE.Vector3(0, 0, 0)
+  , START = new THREE.Vector3(0, 0, 0)
+  , END = new THREE.Vector3(0, 0, 0)
+  , DIRECTION = new THREE.Vector3()
+  , LOCAL_ATTRACTOR = new THREE.Vector3()
+  , TOTAL_FORCES = new THREE.Vector3()
+
+proto.applyWorldAcceleration = applyTo('acceleration')
+proto.applyWorldVelocity = applyTo('velocity')
+
+function applyTo(which) {
+  return function(world) {
+    var local = this.avatar.worldToLocal(world)
+    this[which].x += local.x
+    this[which].y += local.y
+    this[which].z += local.z
+  }
+}
+
+proto.tick = function(dt) {
+  var forces = this.forces
+    , acceleration = this.acceleration
+    , velocity = this.velocity
+    , terminal = this.terminal
+    , friction = this.friction
+    , desired = DESIRED
+    , world_desired = WORLD_DESIRED
+    , bbox
+    , pcs
+  TOTAL_FORCES.multiplyScalar(0)
+
+  desired.x =
+  desired.y =
+  desired.z =
+  world_desired.x =
+  world_desired.y =
+  world_desired.z = 0
+
+  for(var i = 0; i < this.attractors.length; i++) {
+    var distance_factor = this.avatar.position.distanceToSquared(this.attractors[i])
+    LOCAL_ATTRACTOR.copy(this.attractors[i])
+    LOCAL_ATTRACTOR = this.avatar.worldToLocal(LOCAL_ATTRACTOR)
+
+    DIRECTION.sub(LOCAL_ATTRACTOR, this.avatar.position)
+
+    DIRECTION.divideScalar(DIRECTION.length() * distance_factor)
+    DIRECTION.multiplyScalar(this.attractors[i].mass)
+
+    TOTAL_FORCES.addSelf(DIRECTION)
+  }
+  
+  if(!this.resting.x) {
+    acceleration.x /= 8 * dt
+    acceleration.x += TOTAL_FORCES.x * dt
+    acceleration.x += forces.x * dt
+
+    velocity.x += acceleration.x * dt
+    velocity.x *= friction.x
+
+    if(abs(velocity.x) < terminal.x) {
+      desired.x = (velocity.x * dt)
+    } else if(velocity.x !== 0) {
+      desired.x = (velocity.x / abs(velocity.x)) * terminal.x
+    }
+  } else {
+    acceleration.x = velocity.x = 0
+  }
+  if(!this.resting.y) {
+    acceleration.y /= 8 * dt
+    acceleration.y += TOTAL_FORCES.y * dt
+    acceleration.y += forces.y * dt
+
+    velocity.y += acceleration.y * dt
+    velocity.y *= friction.y
+
+    if(abs(velocity.y) < terminal.y) {
+      desired.y = (velocity.y * dt)
+    } else if(velocity.y !== 0) {
+      desired.y = (velocity.y / abs(velocity.y)) * terminal.y
+    }
+  } else {
+    acceleration.y = velocity.y = 0
+  }
+  if(!this.resting.z) {
+    acceleration.z /= 8 * dt
+    acceleration.z += TOTAL_FORCES.z * dt
+    acceleration.z += forces.z * dt
+
+    velocity.z += acceleration.z * dt
+    velocity.z *= friction.z
+
+    if(abs(velocity.z) < terminal.z) {
+      desired.z = (velocity.z * dt)
+    } else if(velocity.z !== 0) {
+      desired.z = (velocity.z / abs(velocity.z)) * terminal.z
+    }
+  } else {
+    acceleration.z = velocity.z = 0
+  }
+  
+  START.copy(this.avatar.position)
+  this.avatar.translateX(desired.x)
+  this.avatar.translateY(desired.y)
+  this.avatar.translateZ(desired.z)
+  END.copy(this.avatar.position)
+  this.avatar.position.copy(START)
+  world_desired.x = END.x - START.x
+  world_desired.y = END.y - START.y
+  world_desired.z = END.z - START.z
+  this.friction.x =
+  this.friction.y =
+  this.friction.z = this.default_friction
+
+  // run collisions
+  this.resting.x =
+  this.resting.y =
+  this.resting.z = false
+
+  bbox = this.aabb()
+  pcs = this.collidables
+
+  for(var i = 0, len = pcs.length; i < len; ++i) {
+    if(pcs[i] !== this) {
+      pcs[i].collide(this, bbox, world_desired, this.resting)
+    }
+  }
+
+  // apply translation
+  this.avatar.position.x += world_desired.x
+  this.avatar.position.y += world_desired.y
+  this.avatar.position.z += world_desired.z
+}
+
+proto.subjectTo = function(force) {
+  this.forces.x += force[0]
+  this.forces.y += force[1]
+  this.forces.z += force[2]
+  return this
+}
+
+proto.removeForce = function(force) {
+  this.forces.x -= force[0]
+  this.forces.y -= force[1]
+  this.forces.z -= force[2]
+  return this
+}
+
+proto.attractTo = function(vector, mass) {
+  vector.mass = mass
+  this.attractors.push(vector)
+}
+
+proto.aabb = function() {
+  var pos = this.avatar.position
+  var d = this.dimensions
+  return aabb(
+    [pos.x - (d[0]/2), pos.y, pos.z - (d[2]/2)],
+    this.dimensions
+  )
+}
+
+// no object -> object collisions for now, thanks
+proto.collide = function(other, bbox, world_vec, resting) {
+  return
+}
+
+proto.atRestX = function() {
+  return this.resting.x
+}
+
+proto.atRestY = function() {
+  return this.resting.y
+}
+
+proto.atRestZ = function() {
+  return this.resting.z
+}
+
+},{"aabb-3d":6,"three":28}],33:[function(require,module,exports){
+"use strict"
+
+function traceRay_impl(
+  voxels,
+  px, py, pz,
+  dx, dy, dz,
+  max_d,
+  hit_pos,
+  hit_norm,
+  EPSILON) {
+  var t = 0.0
+    , nx=0, ny=0, nz=0
+    , ix, iy, iz
+    , fx, fy, fz
+    , ox, oy, oz
+    , ex, ey, ez
+    , b, step, min_step
+    , floor = Math.floor
+  //Step block-by-block along ray
+  while(t <= max_d) {
+    ox = px + t * dx
+    oy = py + t * dy
+    oz = pz + t * dz
+    ix = floor(ox)|0
+    iy = floor(oy)|0
+    iz = floor(oz)|0
+    fx = ox - ix
+    fy = oy - iy
+    fz = oz - iz
+    b = voxels.getBlock(ix, iy, iz)
+    if(b) {
+      if(hit_pos) {
+        //Clamp to face on hit
+        hit_pos[0] = fx < EPSILON ? +ix : (fx > 1.0-EPSILON ? ix+1.0-EPSILON : ox)
+        hit_pos[1] = fy < EPSILON ? +iy : (fy > 1.0-EPSILON ? iy+1.0-EPSILON : oy)
+        hit_pos[2] = fz < EPSILON ? +iz : (fz > 1.0-EPSILON ? iz+1.0-EPSILON : oz)
+      }
+      if(hit_norm) {
+        hit_norm[0] = nx
+        hit_norm[1] = ny
+        hit_norm[2] = nz
+      }
+      return b
+    }
+    //Check edge cases
+    min_step = +(EPSILON * (1.0 + t))
+    if(t > min_step) {
+      ex = nx < 0 ? fx <= min_step : fx >= 1.0 - min_step
+      ey = ny < 0 ? fy <= min_step : fy >= 1.0 - min_step
+      ez = nz < 0 ? fz <= min_step : fz >= 1.0 - min_step
+      if(ex && ey && ez) {
+        b = voxels.getBlock(ix+nx, iy+ny, iz) ||
+            voxels.getBlock(ix, iy+ny, iz+nz) ||
+            voxels.getBlock(ix+nx, iy, iz+nz)
+        if(b) {
+          if(hit_pos) {
+            hit_pos[0] = nx < 0 ? ix-EPSILON : ix + 1.0-EPSILON
+            hit_pos[1] = ny < 0 ? iy-EPSILON : iy + 1.0-EPSILON
+            hit_pos[2] = nz < 0 ? iz-EPSILON : iz + 1.0-EPSILON
+          }
+          if(hit_norm) {
+            hit_norm[0] = nx
+            hit_norm[1] = ny
+            hit_norm[2] = nz
+          }
+          return b
+        }
+      }
+      if(ex && (ey || ez)) {
+        b = voxels.getBlock(ix+nx, iy, iz)
+        if(b) {
+          if(hit_pos) {
+            hit_pos[0] = nx < 0 ? ix-EPSILON : ix + 1.0-EPSILON
+            hit_pos[1] = fy < EPSILON ? +iy : oy
+            hit_pos[2] = fz < EPSILON ? +iz : oz
+          }
+          if(hit_norm) {
+            hit_norm[0] = nx
+            hit_norm[1] = ny
+            hit_norm[2] = nz
+          }
+          return b
+        }
+      }
+      if(ey && (ex || ez)) {
+        b = voxels.getBlock(ix, iy+ny, iz)
+        if(b) {
+          if(hit_pos) {
+            hit_pos[0] = fx < EPSILON ? +ix : ox
+            hit_pos[1] = ny < 0 ? iy-EPSILON : iy + 1.0-EPSILON
+            hit_pos[2] = fz < EPSILON ? +iz : oz
+          }
+          if(hit_norm) {
+            hit_norm[0] = nx
+            hit_norm[1] = ny
+            hit_norm[2] = nz
+          }
+          return b
+        }
+      }
+      if(ez && (ex || ey)) {
+        b = voxels.getBlock(ix, iy, iz+nz)
+        if(b) {
+          if(hit_pos) {
+            hit_pos[0] = fx < EPSILON ? +ix : ox
+            hit_pos[1] = fy < EPSILON ? +iy : oy
+            hit_pos[2] = nz < 0 ? iz-EPSILON : iz + 1.0-EPSILON
+          }
+          if(hit_norm) {
+            hit_norm[0] = nx
+            hit_norm[1] = ny
+            hit_norm[2] = nz
+          }
+          return b
+        }
+      }
+    }
+    //Walk to next face of cube along ray
+    nx = ny = nz = 0
+    step = 2.0
+    if(dx < -EPSILON) {
+      var s = -fx/dx
+      nx = 1
+      step = s
+    }
+    if(dx > EPSILON) {
+      var s = (1.0-fx)/dx
+      nx = -1
+      step = s
+    }
+    if(dy < -EPSILON) {
+      var s = -fy/dy
+      if(s < step-min_step) {
+        nx = 0
+        ny = 1
+        step = s
+      } else if(s < step+min_step) {
+        ny = 1
+      }
+    }
+    if(dy > EPSILON) {
+      var s = (1.0-fy)/dy
+      if(s < step-min_step) {
+        nx = 0
+        ny = -1
+        step = s
+      } else if(s < step+min_step) {
+        ny = -1
+      }
+    }
+    if(dz < -EPSILON) {
+      var s = -fz/dz
+      if(s < step-min_step) {
+        nx = ny = 0
+        nz = 1
+        step = s
+      } else if(s < step+min_step) {
+        nz = 1
+      }
+    }
+    if(dz > EPSILON) {
+      var s = (1.0-fz)/dz
+      if(s < step-min_step) {
+        nx = ny = 0
+        nz = -1
+        step = s
+      } else if(s < step+min_step) {
+        nz = -1
+      }
+    }
+    if(step > max_d - t) {
+      step = max_d - t - min_step
+    }
+    if(step < min_step) {
+      step = min_step
+    }
+    t += step
+  }
+  if(hit_pos) {
+    hit_pos[0] = ox;
+    hit_pos[1] = oy;
+    hit_pos[2] = oz;
+  }
+  if(hit_norm) {
+    hit_norm[0] = hit_norm[1] = hit_norm[2] = 0;
+  }
+  return 0
+}
+
+function traceRay(voxels, origin, direction, max_d, hit_pos, hit_norm, EPSILON) {
+  var px = +origin[0]
+    , py = +origin[1]
+    , pz = +origin[2]
+    , dx = +direction[0]
+    , dy = +direction[1]
+    , dz = +direction[2]
+    , ds = Math.sqrt(dx*dx + dy*dy + dz*dz)
+  if(typeof(EPSILON) === "undefined") {
+    EPSILON = 1e-8
+  }
+  if(ds < EPSILON) {
+    if(hit_pos) {
+      hit_pos[0] = hit_pos[1] = hit_pos[2]
+    }
+    if(hit_norm) {
+      hit_norm[0] = hit_norm[1] = hit_norm[2]
+    }
+    return 0;
+  }
+  dx /= ds
+  dy /= ds
+  dz /= ds
+  if(typeof(max_d) === "undefined") {
+    max_d = 64.0
+  } else {
+    max_d = +max_d
+  }
+  return traceRay_impl(voxels, px, py, pz, dx, dy, dz, max_d, hit_pos, hit_norm, EPSILON)
+}
+
+module.exports = traceRay
+},{}],34:[function(require,module,exports){
+module.exports = coordinates
+
+var aabb = require('aabb-3d')
+var events = require('events')
+
+function coordinates(spatial, box, regionWidth) {
+  var emitter = new events.EventEmitter()
+  var lastRegion = [NaN, NaN, NaN]
+  var thisRegion
+
+  if (arguments.length === 2) {
+    regionWidth = box
+    box = aabb([-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity])
+  }
+
+  spatial.on('position', box, updateRegion)
+  
+  function updateRegion(pos) {
+    thisRegion = [Math.floor(pos[0] / regionWidth), Math.floor(pos[1] / regionWidth), Math.floor(pos[2] / regionWidth)]
+    if (thisRegion[0] !== lastRegion[0] || thisRegion[1] !== lastRegion[1] || thisRegion[2] !== lastRegion[2]) {
+      emitter.emit('change', thisRegion)
+    }
+    lastRegion = thisRegion
+  }
+ 
+  return emitter
+}
+},{"aabb-3d":35,"events":70}],35:[function(require,module,exports){
+arguments[4][6][0].apply(exports,arguments)
+},{"dup":6,"gl-matrix":36}],36:[function(require,module,exports){
+/**
+ * @fileoverview gl-matrix - High performance matrix and vector operations
+ * @author Brandon Jones
+ * @author Colin MacKenzie IV
+ * @version 2.1.0
+ */
+
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+
+(function() {
+  "use strict";
+
+  var shim = {};
+  if (typeof(exports) === 'undefined') {
+    if(typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
+      shim.exports = {};
+      define(function() {
+        return shim.exports;
+      });
+    } else {
+      // gl-matrix lives in a browser, define its namespaces in global
+      shim.exports = window;
+    }    
+  }
+  else {
+    // gl-matrix lives in commonjs, define its namespaces in exports
+    shim.exports = exports;
+  }
+
+  (function(exports) {
+    /* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+
+if(!GLMAT_EPSILON) {
+    var GLMAT_EPSILON = 0.000001;
+}
+
+if(!GLMAT_ARRAY_TYPE) {
+    var GLMAT_ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
+}
+
+/**
+ * @class Common utilities
+ * @name glMatrix
+ */
+var glMatrix = {};
+
+/**
+ * Sets the type of array used when creating new vectors and matricies
+ *
+ * @param {Type} type Array type, such as Float32Array or Array
+ */
+glMatrix.setMatrixArrayType = function(type) {
+    GLMAT_ARRAY_TYPE = type;
+}
+
+if(typeof(exports) !== 'undefined') {
+    exports.glMatrix = glMatrix;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 2 Dimensional Vector
+ * @name vec2
+ */
+
+var vec2 = {};
+
+/**
+ * Creates a new, empty vec2
+ *
+ * @returns {vec2} a new 2D vector
+ */
+vec2.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(2);
+    out[0] = 0;
+    out[1] = 0;
+    return out;
+};
+
+/**
+ * Creates a new vec2 initialized with values from an existing vector
+ *
+ * @param {vec2} a vector to clone
+ * @returns {vec2} a new 2D vector
+ */
+vec2.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(2);
+    out[0] = a[0];
+    out[1] = a[1];
+    return out;
+};
+
+/**
+ * Creates a new vec2 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @returns {vec2} a new 2D vector
+ */
+vec2.fromValues = function(x, y) {
+    var out = new GLMAT_ARRAY_TYPE(2);
+    out[0] = x;
+    out[1] = y;
+    return out;
+};
+
+/**
+ * Copy the values from one vec2 to another
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the source vector
+ * @returns {vec2} out
+ */
+vec2.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    return out;
+};
+
+/**
+ * Set the components of a vec2 to the given values
+ *
+ * @param {vec2} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @returns {vec2} out
+ */
+vec2.set = function(out, x, y) {
+    out[0] = x;
+    out[1] = y;
+    return out;
+};
+
+/**
+ * Adds two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.add = function(out, a, b) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    return out;
+};
+
+/**
+ * Subtracts two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.subtract = function(out, a, b) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    return out;
+};
+
+/**
+ * Alias for {@link vec2.subtract}
+ * @function
+ */
+vec2.sub = vec2.subtract;
+
+/**
+ * Multiplies two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.multiply = function(out, a, b) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    return out;
+};
+
+/**
+ * Alias for {@link vec2.multiply}
+ * @function
+ */
+vec2.mul = vec2.multiply;
+
+/**
+ * Divides two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.divide = function(out, a, b) {
+    out[0] = a[0] / b[0];
+    out[1] = a[1] / b[1];
+    return out;
+};
+
+/**
+ * Alias for {@link vec2.divide}
+ * @function
+ */
+vec2.div = vec2.divide;
+
+/**
+ * Returns the minimum of two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.min = function(out, a, b) {
+    out[0] = Math.min(a[0], b[0]);
+    out[1] = Math.min(a[1], b[1]);
+    return out;
+};
+
+/**
+ * Returns the maximum of two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.max = function(out, a, b) {
+    out[0] = Math.max(a[0], b[0]);
+    out[1] = Math.max(a[1], b[1]);
+    return out;
+};
+
+/**
+ * Scales a vec2 by a scalar number
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {vec2} out
+ */
+vec2.scale = function(out, a, b) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec2.distance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1];
+    return Math.sqrt(x*x + y*y);
+};
+
+/**
+ * Alias for {@link vec2.distance}
+ * @function
+ */
+vec2.dist = vec2.distance;
+
+/**
+ * Calculates the squared euclidian distance between two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec2.squaredDistance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1];
+    return x*x + y*y;
+};
+
+/**
+ * Alias for {@link vec2.squaredDistance}
+ * @function
+ */
+vec2.sqrDist = vec2.squaredDistance;
+
+/**
+ * Calculates the length of a vec2
+ *
+ * @param {vec2} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec2.length = function (a) {
+    var x = a[0],
+        y = a[1];
+    return Math.sqrt(x*x + y*y);
+};
+
+/**
+ * Alias for {@link vec2.length}
+ * @function
+ */
+vec2.len = vec2.length;
+
+/**
+ * Calculates the squared length of a vec2
+ *
+ * @param {vec2} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec2.squaredLength = function (a) {
+    var x = a[0],
+        y = a[1];
+    return x*x + y*y;
+};
+
+/**
+ * Alias for {@link vec2.squaredLength}
+ * @function
+ */
+vec2.sqrLen = vec2.squaredLength;
+
+/**
+ * Negates the components of a vec2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a vector to negate
+ * @returns {vec2} out
+ */
+vec2.negate = function(out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    return out;
+};
+
+/**
+ * Normalize a vec2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a vector to normalize
+ * @returns {vec2} out
+ */
+vec2.normalize = function(out, a) {
+    var x = a[0],
+        y = a[1];
+    var len = x*x + y*y;
+    if (len > 0) {
+        //TODO: evaluate use of glm_invsqrt here?
+        len = 1 / Math.sqrt(len);
+        out[0] = a[0] * len;
+        out[1] = a[1] * len;
+    }
+    return out;
+};
+
+/**
+ * Calculates the dot product of two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec2.dot = function (a, b) {
+    return a[0] * b[0] + a[1] * b[1];
+};
+
+/**
+ * Computes the cross product of two vec2's
+ * Note that the cross product must by definition produce a 3D vector
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec3} out
+ */
+vec2.cross = function(out, a, b) {
+    var z = a[0] * b[1] - a[1] * b[0];
+    out[0] = out[1] = 0;
+    out[2] = z;
+    return out;
+};
+
+/**
+ * Performs a linear interpolation between two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec2} out
+ */
+vec2.lerp = function (out, a, b, t) {
+    var ax = a[0],
+        ay = a[1];
+    out[0] = ax + t * (b[0] - ax);
+    out[1] = ay + t * (b[1] - ay);
+    return out;
+};
+
+/**
+ * Transforms the vec2 with a mat2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat2} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat2 = function(out, a, m) {
+    var x = a[0],
+        y = a[1];
+    out[0] = m[0] * x + m[2] * y;
+    out[1] = m[1] * x + m[3] * y;
+    return out;
+};
+
+/**
+ * Transforms the vec2 with a mat2d
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat2d} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat2d = function(out, a, m) {
+    var x = a[0],
+        y = a[1];
+    out[0] = m[0] * x + m[2] * y + m[4];
+    out[1] = m[1] * x + m[3] * y + m[5];
+    return out;
+};
+
+/**
+ * Transforms the vec2 with a mat3
+ * 3rd vector component is implicitly '1'
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat3} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat3 = function(out, a, m) {
+    var x = a[0],
+        y = a[1];
+    out[0] = m[0] * x + m[3] * y + m[6];
+    out[1] = m[1] * x + m[4] * y + m[7];
+    return out;
+};
+
+/**
+ * Transforms the vec2 with a mat4
+ * 3rd vector component is implicitly '0'
+ * 4th vector component is implicitly '1'
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat4 = function(out, a, m) {
+    var x = a[0], 
+        y = a[1];
+    out[0] = m[0] * x + m[4] * y + m[12];
+    out[1] = m[1] * x + m[5] * y + m[13];
+    return out;
+};
+
+/**
+ * Perform some operation over an array of vec2s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ * @function
+ */
+vec2.forEach = (function() {
+    var vec = vec2.create();
+
+    return function(a, stride, offset, count, fn, arg) {
+        var i, l;
+        if(!stride) {
+            stride = 2;
+        }
+
+        if(!offset) {
+            offset = 0;
+        }
+        
+        if(count) {
+            l = Math.min((count * stride) + offset, a.length);
+        } else {
+            l = a.length;
+        }
+
+        for(i = offset; i < l; i += stride) {
+            vec[0] = a[i]; vec[1] = a[i+1];
+            fn(vec, vec, arg);
+            a[i] = vec[0]; a[i+1] = vec[1];
+        }
+        
+        return a;
+    };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec2} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec2.str = function (a) {
+    return 'vec2(' + a[0] + ', ' + a[1] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.vec2 = vec2;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 3 Dimensional Vector
+ * @name vec3
+ */
+
+var vec3 = {};
+
+/**
+ * Creates a new, empty vec3
+ *
+ * @returns {vec3} a new 3D vector
+ */
+vec3.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(3);
+    out[0] = 0;
+    out[1] = 0;
+    out[2] = 0;
+    return out;
+};
+
+/**
+ * Creates a new vec3 initialized with values from an existing vector
+ *
+ * @param {vec3} a vector to clone
+ * @returns {vec3} a new 3D vector
+ */
+vec3.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(3);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    return out;
+};
+
+/**
+ * Creates a new vec3 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @returns {vec3} a new 3D vector
+ */
+vec3.fromValues = function(x, y, z) {
+    var out = new GLMAT_ARRAY_TYPE(3);
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    return out;
+};
+
+/**
+ * Copy the values from one vec3 to another
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the source vector
+ * @returns {vec3} out
+ */
+vec3.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    return out;
+};
+
+/**
+ * Set the components of a vec3 to the given values
+ *
+ * @param {vec3} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @returns {vec3} out
+ */
+vec3.set = function(out, x, y, z) {
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    return out;
+};
+
+/**
+ * Adds two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.add = function(out, a, b) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    out[2] = a[2] + b[2];
+    return out;
+};
+
+/**
+ * Subtracts two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.subtract = function(out, a, b) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    out[2] = a[2] - b[2];
+    return out;
+};
+
+/**
+ * Alias for {@link vec3.subtract}
+ * @function
+ */
+vec3.sub = vec3.subtract;
+
+/**
+ * Multiplies two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.multiply = function(out, a, b) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    out[2] = a[2] * b[2];
+    return out;
+};
+
+/**
+ * Alias for {@link vec3.multiply}
+ * @function
+ */
+vec3.mul = vec3.multiply;
+
+/**
+ * Divides two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.divide = function(out, a, b) {
+    out[0] = a[0] / b[0];
+    out[1] = a[1] / b[1];
+    out[2] = a[2] / b[2];
+    return out;
+};
+
+/**
+ * Alias for {@link vec3.divide}
+ * @function
+ */
+vec3.div = vec3.divide;
+
+/**
+ * Returns the minimum of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.min = function(out, a, b) {
+    out[0] = Math.min(a[0], b[0]);
+    out[1] = Math.min(a[1], b[1]);
+    out[2] = Math.min(a[2], b[2]);
+    return out;
+};
+
+/**
+ * Returns the maximum of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.max = function(out, a, b) {
+    out[0] = Math.max(a[0], b[0]);
+    out[1] = Math.max(a[1], b[1]);
+    out[2] = Math.max(a[2], b[2]);
+    return out;
+};
+
+/**
+ * Scales a vec3 by a scalar number
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {vec3} out
+ */
+vec3.scale = function(out, a, b) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    out[2] = a[2] * b;
+    return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec3.distance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2];
+    return Math.sqrt(x*x + y*y + z*z);
+};
+
+/**
+ * Alias for {@link vec3.distance}
+ * @function
+ */
+vec3.dist = vec3.distance;
+
+/**
+ * Calculates the squared euclidian distance between two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec3.squaredDistance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2];
+    return x*x + y*y + z*z;
+};
+
+/**
+ * Alias for {@link vec3.squaredDistance}
+ * @function
+ */
+vec3.sqrDist = vec3.squaredDistance;
+
+/**
+ * Calculates the length of a vec3
+ *
+ * @param {vec3} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec3.length = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2];
+    return Math.sqrt(x*x + y*y + z*z);
+};
+
+/**
+ * Alias for {@link vec3.length}
+ * @function
+ */
+vec3.len = vec3.length;
+
+/**
+ * Calculates the squared length of a vec3
+ *
+ * @param {vec3} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec3.squaredLength = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2];
+    return x*x + y*y + z*z;
+};
+
+/**
+ * Alias for {@link vec3.squaredLength}
+ * @function
+ */
+vec3.sqrLen = vec3.squaredLength;
+
+/**
+ * Negates the components of a vec3
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a vector to negate
+ * @returns {vec3} out
+ */
+vec3.negate = function(out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    return out;
+};
+
+/**
+ * Normalize a vec3
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a vector to normalize
+ * @returns {vec3} out
+ */
+vec3.normalize = function(out, a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2];
+    var len = x*x + y*y + z*z;
+    if (len > 0) {
+        //TODO: evaluate use of glm_invsqrt here?
+        len = 1 / Math.sqrt(len);
+        out[0] = a[0] * len;
+        out[1] = a[1] * len;
+        out[2] = a[2] * len;
+    }
+    return out;
+};
+
+/**
+ * Calculates the dot product of two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec3.dot = function (a, b) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+};
+
+/**
+ * Computes the cross product of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+vec3.cross = function(out, a, b) {
+    var ax = a[0], ay = a[1], az = a[2],
+        bx = b[0], by = b[1], bz = b[2];
+
+    out[0] = ay * bz - az * by;
+    out[1] = az * bx - ax * bz;
+    out[2] = ax * by - ay * bx;
+    return out;
+};
+
+/**
+ * Performs a linear interpolation between two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec3} out
+ */
+vec3.lerp = function (out, a, b, t) {
+    var ax = a[0],
+        ay = a[1],
+        az = a[2];
+    out[0] = ax + t * (b[0] - ax);
+    out[1] = ay + t * (b[1] - ay);
+    out[2] = az + t * (b[2] - az);
+    return out;
+};
+
+/**
+ * Transforms the vec3 with a mat4.
+ * 4th vector component is implicitly '1'
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec3} out
+ */
+vec3.transformMat4 = function(out, a, m) {
+    var x = a[0], y = a[1], z = a[2];
+    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12];
+    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13];
+    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14];
+    return out;
+};
+
+/**
+ * Transforms the vec3 with a quat
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {quat} q quaternion to transform with
+ * @returns {vec3} out
+ */
+vec3.transformQuat = function(out, a, q) {
+    var x = a[0], y = a[1], z = a[2],
+        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+
+        // calculate quat * vec
+        ix = qw * x + qy * z - qz * y,
+        iy = qw * y + qz * x - qx * z,
+        iz = qw * z + qx * y - qy * x,
+        iw = -qx * x - qy * y - qz * z;
+
+    // calculate result * inverse quat
+    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+    return out;
+};
+
+/**
+ * Perform some operation over an array of vec3s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ * @function
+ */
+vec3.forEach = (function() {
+    var vec = vec3.create();
+
+    return function(a, stride, offset, count, fn, arg) {
+        var i, l;
+        if(!stride) {
+            stride = 3;
+        }
+
+        if(!offset) {
+            offset = 0;
+        }
+        
+        if(count) {
+            l = Math.min((count * stride) + offset, a.length);
+        } else {
+            l = a.length;
+        }
+
+        for(i = offset; i < l; i += stride) {
+            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
+            fn(vec, vec, arg);
+            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
+        }
+        
+        return a;
+    };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec3} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec3.str = function (a) {
+    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.vec3 = vec3;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 4 Dimensional Vector
+ * @name vec4
+ */
+
+var vec4 = {};
+
+/**
+ * Creates a new, empty vec4
+ *
+ * @returns {vec4} a new 4D vector
+ */
+vec4.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(4);
+    out[0] = 0;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    return out;
+};
+
+/**
+ * Creates a new vec4 initialized with values from an existing vector
+ *
+ * @param {vec4} a vector to clone
+ * @returns {vec4} a new 4D vector
+ */
+vec4.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(4);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Creates a new vec4 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {vec4} a new 4D vector
+ */
+vec4.fromValues = function(x, y, z, w) {
+    var out = new GLMAT_ARRAY_TYPE(4);
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    out[3] = w;
+    return out;
+};
+
+/**
+ * Copy the values from one vec4 to another
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the source vector
+ * @returns {vec4} out
+ */
+vec4.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Set the components of a vec4 to the given values
+ *
+ * @param {vec4} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {vec4} out
+ */
+vec4.set = function(out, x, y, z, w) {
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    out[3] = w;
+    return out;
+};
+
+/**
+ * Adds two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.add = function(out, a, b) {
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+    out[2] = a[2] + b[2];
+    out[3] = a[3] + b[3];
+    return out;
+};
+
+/**
+ * Subtracts two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.subtract = function(out, a, b) {
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+    out[2] = a[2] - b[2];
+    out[3] = a[3] - b[3];
+    return out;
+};
+
+/**
+ * Alias for {@link vec4.subtract}
+ * @function
+ */
+vec4.sub = vec4.subtract;
+
+/**
+ * Multiplies two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.multiply = function(out, a, b) {
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+    out[2] = a[2] * b[2];
+    out[3] = a[3] * b[3];
+    return out;
+};
+
+/**
+ * Alias for {@link vec4.multiply}
+ * @function
+ */
+vec4.mul = vec4.multiply;
+
+/**
+ * Divides two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.divide = function(out, a, b) {
+    out[0] = a[0] / b[0];
+    out[1] = a[1] / b[1];
+    out[2] = a[2] / b[2];
+    out[3] = a[3] / b[3];
+    return out;
+};
+
+/**
+ * Alias for {@link vec4.divide}
+ * @function
+ */
+vec4.div = vec4.divide;
+
+/**
+ * Returns the minimum of two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.min = function(out, a, b) {
+    out[0] = Math.min(a[0], b[0]);
+    out[1] = Math.min(a[1], b[1]);
+    out[2] = Math.min(a[2], b[2]);
+    out[3] = Math.min(a[3], b[3]);
+    return out;
+};
+
+/**
+ * Returns the maximum of two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+vec4.max = function(out, a, b) {
+    out[0] = Math.max(a[0], b[0]);
+    out[1] = Math.max(a[1], b[1]);
+    out[2] = Math.max(a[2], b[2]);
+    out[3] = Math.max(a[3], b[3]);
+    return out;
+};
+
+/**
+ * Scales a vec4 by a scalar number
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {vec4} out
+ */
+vec4.scale = function(out, a, b) {
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+    out[2] = a[2] * b;
+    out[3] = a[3] * b;
+    return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec4.distance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2],
+        w = b[3] - a[3];
+    return Math.sqrt(x*x + y*y + z*z + w*w);
+};
+
+/**
+ * Alias for {@link vec4.distance}
+ * @function
+ */
+vec4.dist = vec4.distance;
+
+/**
+ * Calculates the squared euclidian distance between two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec4.squaredDistance = function(a, b) {
+    var x = b[0] - a[0],
+        y = b[1] - a[1],
+        z = b[2] - a[2],
+        w = b[3] - a[3];
+    return x*x + y*y + z*z + w*w;
+};
+
+/**
+ * Alias for {@link vec4.squaredDistance}
+ * @function
+ */
+vec4.sqrDist = vec4.squaredDistance;
+
+/**
+ * Calculates the length of a vec4
+ *
+ * @param {vec4} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec4.length = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2],
+        w = a[3];
+    return Math.sqrt(x*x + y*y + z*z + w*w);
+};
+
+/**
+ * Alias for {@link vec4.length}
+ * @function
+ */
+vec4.len = vec4.length;
+
+/**
+ * Calculates the squared length of a vec4
+ *
+ * @param {vec4} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec4.squaredLength = function (a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2],
+        w = a[3];
+    return x*x + y*y + z*z + w*w;
+};
+
+/**
+ * Alias for {@link vec4.squaredLength}
+ * @function
+ */
+vec4.sqrLen = vec4.squaredLength;
+
+/**
+ * Negates the components of a vec4
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a vector to negate
+ * @returns {vec4} out
+ */
+vec4.negate = function(out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    out[3] = -a[3];
+    return out;
+};
+
+/**
+ * Normalize a vec4
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a vector to normalize
+ * @returns {vec4} out
+ */
+vec4.normalize = function(out, a) {
+    var x = a[0],
+        y = a[1],
+        z = a[2],
+        w = a[3];
+    var len = x*x + y*y + z*z + w*w;
+    if (len > 0) {
+        len = 1 / Math.sqrt(len);
+        out[0] = a[0] * len;
+        out[1] = a[1] * len;
+        out[2] = a[2] * len;
+        out[3] = a[3] * len;
+    }
+    return out;
+};
+
+/**
+ * Calculates the dot product of two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec4.dot = function (a, b) {
+    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+};
+
+/**
+ * Performs a linear interpolation between two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec4} out
+ */
+vec4.lerp = function (out, a, b, t) {
+    var ax = a[0],
+        ay = a[1],
+        az = a[2],
+        aw = a[3];
+    out[0] = ax + t * (b[0] - ax);
+    out[1] = ay + t * (b[1] - ay);
+    out[2] = az + t * (b[2] - az);
+    out[3] = aw + t * (b[3] - aw);
+    return out;
+};
+
+/**
+ * Transforms the vec4 with a mat4.
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec4} out
+ */
+vec4.transformMat4 = function(out, a, m) {
+    var x = a[0], y = a[1], z = a[2], w = a[3];
+    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
+    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
+    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
+    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
+    return out;
+};
+
+/**
+ * Transforms the vec4 with a quat
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to transform
+ * @param {quat} q quaternion to transform with
+ * @returns {vec4} out
+ */
+vec4.transformQuat = function(out, a, q) {
+    var x = a[0], y = a[1], z = a[2],
+        qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+
+        // calculate quat * vec
+        ix = qw * x + qy * z - qz * y,
+        iy = qw * y + qz * x - qx * z,
+        iz = qw * z + qx * y - qy * x,
+        iw = -qx * x - qy * y - qz * z;
+
+    // calculate result * inverse quat
+    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+    return out;
+};
+
+/**
+ * Perform some operation over an array of vec4s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ * @function
+ */
+vec4.forEach = (function() {
+    var vec = vec4.create();
+
+    return function(a, stride, offset, count, fn, arg) {
+        var i, l;
+        if(!stride) {
+            stride = 4;
+        }
+
+        if(!offset) {
+            offset = 0;
+        }
+        
+        if(count) {
+            l = Math.min((count * stride) + offset, a.length);
+        } else {
+            l = a.length;
+        }
+
+        for(i = offset; i < l; i += stride) {
+            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
+            fn(vec, vec, arg);
+            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
+        }
+        
+        return a;
+    };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec4} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec4.str = function (a) {
+    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.vec4 = vec4;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 2x2 Matrix
+ * @name mat2
+ */
+
+var mat2 = {};
+
+var mat2Identity = new Float32Array([
+    1, 0,
+    0, 1
+]);
+
+/**
+ * Creates a new identity mat2
+ *
+ * @returns {mat2} a new 2x2 matrix
+ */
+mat2.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(4);
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    return out;
+};
+
+/**
+ * Creates a new mat2 initialized with values from an existing matrix
+ *
+ * @param {mat2} a matrix to clone
+ * @returns {mat2} a new 2x2 matrix
+ */
+mat2.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(4);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Copy the values from one mat2 to another
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Set a mat2 to the identity matrix
+ *
+ * @param {mat2} out the receiving matrix
+ * @returns {mat2} out
+ */
+mat2.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    return out;
+};
+
+/**
+ * Transpose the values of a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.transpose = function(out, a) {
+    // If we are transposing ourselves we can skip a few steps but have to cache some values
+    if (out === a) {
+        var a1 = a[1];
+        out[1] = a[2];
+        out[2] = a1;
+    } else {
+        out[0] = a[0];
+        out[1] = a[2];
+        out[2] = a[1];
+        out[3] = a[3];
+    }
+    
+    return out;
+};
+
+/**
+ * Inverts a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.invert = function(out, a) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+
+        // Calculate the determinant
+        det = a0 * a3 - a2 * a1;
+
+    if (!det) {
+        return null;
+    }
+    det = 1.0 / det;
+    
+    out[0] =  a3 * det;
+    out[1] = -a1 * det;
+    out[2] = -a2 * det;
+    out[3] =  a0 * det;
+
+    return out;
+};
+
+/**
+ * Calculates the adjugate of a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.adjoint = function(out, a) {
+    // Caching this value is nessecary if out == a
+    var a0 = a[0];
+    out[0] =  a[3];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    out[3] =  a0;
+
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat2
+ *
+ * @param {mat2} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat2.determinant = function (a) {
+    return a[0] * a[3] - a[2] * a[1];
+};
+
+/**
+ * Multiplies two mat2's
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the first operand
+ * @param {mat2} b the second operand
+ * @returns {mat2} out
+ */
+mat2.multiply = function (out, a, b) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
+    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+    out[0] = a0 * b0 + a1 * b2;
+    out[1] = a0 * b1 + a1 * b3;
+    out[2] = a2 * b0 + a3 * b2;
+    out[3] = a2 * b1 + a3 * b3;
+    return out;
+};
+
+/**
+ * Alias for {@link mat2.multiply}
+ * @function
+ */
+mat2.mul = mat2.multiply;
+
+/**
+ * Rotates a mat2 by the given angle
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat2} out
+ */
+mat2.rotate = function (out, a, rad) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+        s = Math.sin(rad),
+        c = Math.cos(rad);
+    out[0] = a0 *  c + a1 * s;
+    out[1] = a0 * -s + a1 * c;
+    out[2] = a2 *  c + a3 * s;
+    out[3] = a2 * -s + a3 * c;
+    return out;
+};
+
+/**
+ * Scales the mat2 by the dimensions in the given vec2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the matrix to rotate
+ * @param {vec2} v the vec2 to scale the matrix by
+ * @returns {mat2} out
+ **/
+mat2.scale = function(out, a, v) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+        v0 = v[0], v1 = v[1];
+    out[0] = a0 * v0;
+    out[1] = a1 * v1;
+    out[2] = a2 * v0;
+    out[3] = a3 * v1;
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat2
+ *
+ * @param {mat2} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat2.str = function (a) {
+    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat2 = mat2;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 2x3 Matrix
+ * @name mat2d
+ * 
+ * @description 
+ * A mat2d contains six elements defined as:
+ * <pre>
+ * [a, b,
+ *  c, d,
+ *  tx,ty]
+ * </pre>
+ * This is a short form for the 3x3 matrix:
+ * <pre>
+ * [a, b, 0
+ *  c, d, 0
+ *  tx,ty,1]
+ * </pre>
+ * The last column is ignored so the array is shorter and operations are faster.
+ */
+
+var mat2d = {};
+
+var mat2dIdentity = new Float32Array([
+    1, 0,
+    0, 1,
+    0, 0
+]);
+
+/**
+ * Creates a new identity mat2d
+ *
+ * @returns {mat2d} a new 2x3 matrix
+ */
+mat2d.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(6);
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    out[4] = 0;
+    out[5] = 0;
+    return out;
+};
+
+/**
+ * Creates a new mat2d initialized with values from an existing matrix
+ *
+ * @param {mat2d} a matrix to clone
+ * @returns {mat2d} a new 2x3 matrix
+ */
+mat2d.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(6);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    return out;
+};
+
+/**
+ * Copy the values from one mat2d to another
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the source matrix
+ * @returns {mat2d} out
+ */
+mat2d.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    return out;
+};
+
+/**
+ * Set a mat2d to the identity matrix
+ *
+ * @param {mat2d} out the receiving matrix
+ * @returns {mat2d} out
+ */
+mat2d.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    out[4] = 0;
+    out[5] = 0;
+    return out;
+};
+
+/**
+ * Inverts a mat2d
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the source matrix
+ * @returns {mat2d} out
+ */
+mat2d.invert = function(out, a) {
+    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
+        atx = a[4], aty = a[5];
+
+    var det = aa * ad - ab * ac;
+    if(!det){
+        return null;
+    }
+    det = 1.0 / det;
+
+    out[0] = ad * det;
+    out[1] = -ab * det;
+    out[2] = -ac * det;
+    out[3] = aa * det;
+    out[4] = (ac * aty - ad * atx) * det;
+    out[5] = (ab * atx - aa * aty) * det;
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat2d
+ *
+ * @param {mat2d} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat2d.determinant = function (a) {
+    return a[0] * a[3] - a[1] * a[2];
+};
+
+/**
+ * Multiplies two mat2d's
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the first operand
+ * @param {mat2d} b the second operand
+ * @returns {mat2d} out
+ */
+mat2d.multiply = function (out, a, b) {
+    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
+        atx = a[4], aty = a[5],
+        ba = b[0], bb = b[1], bc = b[2], bd = b[3],
+        btx = b[4], bty = b[5];
+
+    out[0] = aa*ba + ab*bc;
+    out[1] = aa*bb + ab*bd;
+    out[2] = ac*ba + ad*bc;
+    out[3] = ac*bb + ad*bd;
+    out[4] = ba*atx + bc*aty + btx;
+    out[5] = bb*atx + bd*aty + bty;
+    return out;
+};
+
+/**
+ * Alias for {@link mat2d.multiply}
+ * @function
+ */
+mat2d.mul = mat2d.multiply;
+
+
+/**
+ * Rotates a mat2d by the given angle
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat2d} out
+ */
+mat2d.rotate = function (out, a, rad) {
+    var aa = a[0],
+        ab = a[1],
+        ac = a[2],
+        ad = a[3],
+        atx = a[4],
+        aty = a[5],
+        st = Math.sin(rad),
+        ct = Math.cos(rad);
+
+    out[0] = aa*ct + ab*st;
+    out[1] = -aa*st + ab*ct;
+    out[2] = ac*ct + ad*st;
+    out[3] = -ac*st + ct*ad;
+    out[4] = ct*atx + st*aty;
+    out[5] = ct*aty - st*atx;
+    return out;
+};
+
+/**
+ * Scales the mat2d by the dimensions in the given vec2
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the matrix to translate
+ * @param {mat2d} v the vec2 to scale the matrix by
+ * @returns {mat2d} out
+ **/
+mat2d.scale = function(out, a, v) {
+    var vx = v[0], vy = v[1];
+    out[0] = a[0] * vx;
+    out[1] = a[1] * vy;
+    out[2] = a[2] * vx;
+    out[3] = a[3] * vy;
+    out[4] = a[4] * vx;
+    out[5] = a[5] * vy;
+    return out;
+};
+
+/**
+ * Translates the mat2d by the dimensions in the given vec2
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the matrix to translate
+ * @param {mat2d} v the vec2 to translate the matrix by
+ * @returns {mat2d} out
+ **/
+mat2d.translate = function(out, a, v) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4] + v[0];
+    out[5] = a[5] + v[1];
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat2d
+ *
+ * @param {mat2d} a matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat2d.str = function (a) {
+    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat2d = mat2d;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 3x3 Matrix
+ * @name mat3
+ */
+
+var mat3 = {};
+
+var mat3Identity = new Float32Array([
+    1, 0, 0,
+    0, 1, 0,
+    0, 0, 1
+]);
+
+/**
+ * Creates a new identity mat3
+ *
+ * @returns {mat3} a new 3x3 matrix
+ */
+mat3.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(9);
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 1;
+    out[5] = 0;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 1;
+    return out;
+};
+
+/**
+ * Creates a new mat3 initialized with values from an existing matrix
+ *
+ * @param {mat3} a matrix to clone
+ * @returns {mat3} a new 3x3 matrix
+ */
+mat3.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(9);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    return out;
+};
+
+/**
+ * Copy the values from one mat3 to another
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    return out;
+};
+
+/**
+ * Set a mat3 to the identity matrix
+ *
+ * @param {mat3} out the receiving matrix
+ * @returns {mat3} out
+ */
+mat3.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 1;
+    out[5] = 0;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 1;
+    return out;
+};
+
+/**
+ * Transpose the values of a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.transpose = function(out, a) {
+    // If we are transposing ourselves we can skip a few steps but have to cache some values
+    if (out === a) {
+        var a01 = a[1], a02 = a[2], a12 = a[5];
+        out[1] = a[3];
+        out[2] = a[6];
+        out[3] = a01;
+        out[5] = a[7];
+        out[6] = a02;
+        out[7] = a12;
+    } else {
+        out[0] = a[0];
+        out[1] = a[3];
+        out[2] = a[6];
+        out[3] = a[1];
+        out[4] = a[4];
+        out[5] = a[7];
+        out[6] = a[2];
+        out[7] = a[5];
+        out[8] = a[8];
+    }
+    
+    return out;
+};
+
+/**
+ * Inverts a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.invert = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8],
+
+        b01 = a22 * a11 - a12 * a21,
+        b11 = -a22 * a10 + a12 * a20,
+        b21 = a21 * a10 - a11 * a20,
+
+        // Calculate the determinant
+        det = a00 * b01 + a01 * b11 + a02 * b21;
+
+    if (!det) { 
+        return null; 
+    }
+    det = 1.0 / det;
+
+    out[0] = b01 * det;
+    out[1] = (-a22 * a01 + a02 * a21) * det;
+    out[2] = (a12 * a01 - a02 * a11) * det;
+    out[3] = b11 * det;
+    out[4] = (a22 * a00 - a02 * a20) * det;
+    out[5] = (-a12 * a00 + a02 * a10) * det;
+    out[6] = b21 * det;
+    out[7] = (-a21 * a00 + a01 * a20) * det;
+    out[8] = (a11 * a00 - a01 * a10) * det;
+    return out;
+};
+
+/**
+ * Calculates the adjugate of a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.adjoint = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8];
+
+    out[0] = (a11 * a22 - a12 * a21);
+    out[1] = (a02 * a21 - a01 * a22);
+    out[2] = (a01 * a12 - a02 * a11);
+    out[3] = (a12 * a20 - a10 * a22);
+    out[4] = (a00 * a22 - a02 * a20);
+    out[5] = (a02 * a10 - a00 * a12);
+    out[6] = (a10 * a21 - a11 * a20);
+    out[7] = (a01 * a20 - a00 * a21);
+    out[8] = (a00 * a11 - a01 * a10);
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat3
+ *
+ * @param {mat3} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat3.determinant = function (a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8];
+
+    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
+};
+
+/**
+ * Multiplies two mat3's
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the first operand
+ * @param {mat3} b the second operand
+ * @returns {mat3} out
+ */
+mat3.multiply = function (out, a, b) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8],
+
+        b00 = b[0], b01 = b[1], b02 = b[2],
+        b10 = b[3], b11 = b[4], b12 = b[5],
+        b20 = b[6], b21 = b[7], b22 = b[8];
+
+    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
+    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
+    out[2] = b00 * a02 + b01 * a12 + b02 * a22;
+
+    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
+    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
+    out[5] = b10 * a02 + b11 * a12 + b12 * a22;
+
+    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
+    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
+    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
+    return out;
+};
+
+/**
+ * Alias for {@link mat3.multiply}
+ * @function
+ */
+mat3.mul = mat3.multiply;
+
+/**
+ * Translate a mat3 by the given vector
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to translate
+ * @param {vec2} v vector to translate by
+ * @returns {mat3} out
+ */
+mat3.translate = function(out, a, v) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8],
+        x = v[0], y = v[1];
+
+    out[0] = a00;
+    out[1] = a01;
+    out[2] = a02;
+
+    out[3] = a10;
+    out[4] = a11;
+    out[5] = a12;
+
+    out[6] = x * a00 + y * a10 + a20;
+    out[7] = x * a01 + y * a11 + a21;
+    out[8] = x * a02 + y * a12 + a22;
+    return out;
+};
+
+/**
+ * Rotates a mat3 by the given angle
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat3} out
+ */
+mat3.rotate = function (out, a, rad) {
+    var a00 = a[0], a01 = a[1], a02 = a[2],
+        a10 = a[3], a11 = a[4], a12 = a[5],
+        a20 = a[6], a21 = a[7], a22 = a[8],
+
+        s = Math.sin(rad),
+        c = Math.cos(rad);
+
+    out[0] = c * a00 + s * a10;
+    out[1] = c * a01 + s * a11;
+    out[2] = c * a02 + s * a12;
+
+    out[3] = c * a10 - s * a00;
+    out[4] = c * a11 - s * a01;
+    out[5] = c * a12 - s * a02;
+
+    out[6] = a20;
+    out[7] = a21;
+    out[8] = a22;
+    return out;
+};
+
+/**
+ * Scales the mat3 by the dimensions in the given vec2
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to rotate
+ * @param {vec2} v the vec2 to scale the matrix by
+ * @returns {mat3} out
+ **/
+mat3.scale = function(out, a, v) {
+    var x = v[0], y = v[2];
+
+    out[0] = x * a[0];
+    out[1] = x * a[1];
+    out[2] = x * a[2];
+
+    out[3] = y * a[3];
+    out[4] = y * a[4];
+    out[5] = y * a[5];
+
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    return out;
+};
+
+/**
+ * Copies the values from a mat2d into a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to rotate
+ * @param {vec2} v the vec2 to scale the matrix by
+ * @returns {mat3} out
+ **/
+mat3.fromMat2d = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = 0;
+
+    out[3] = a[2];
+    out[4] = a[3];
+    out[5] = 0;
+
+    out[6] = a[4];
+    out[7] = a[5];
+    out[8] = 1;
+    return out;
+};
+
+/**
+* Calculates a 3x3 matrix from the given quaternion
+*
+* @param {mat3} out mat3 receiving operation result
+* @param {quat} q Quaternion to create matrix from
+*
+* @returns {mat3} out
+*/
+mat3.fromQuat = function (out, q) {
+    var x = q[0], y = q[1], z = q[2], w = q[3],
+        x2 = x + x,
+        y2 = y + y,
+        z2 = z + z,
+
+        xx = x * x2,
+        xy = x * y2,
+        xz = x * z2,
+        yy = y * y2,
+        yz = y * z2,
+        zz = z * z2,
+        wx = w * x2,
+        wy = w * y2,
+        wz = w * z2;
+
+    out[0] = 1 - (yy + zz);
+    out[1] = xy + wz;
+    out[2] = xz - wy;
+
+    out[3] = xy - wz;
+    out[4] = 1 - (xx + zz);
+    out[5] = yz + wx;
+
+    out[6] = xz + wy;
+    out[7] = yz - wx;
+    out[8] = 1 - (xx + yy);
+
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat3
+ *
+ * @param {mat3} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat3.str = function (a) {
+    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
+                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
+                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat3 = mat3;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class 4x4 Matrix
+ * @name mat4
+ */
+
+var mat4 = {};
+
+var mat4Identity = new Float32Array([
+    1, 0, 0, 0,
+    0, 1, 0, 0,
+    0, 0, 1, 0,
+    0, 0, 0, 1
+]);
+
+/**
+ * Creates a new identity mat4
+ *
+ * @returns {mat4} a new 4x4 matrix
+ */
+mat4.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(16);
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = 1;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = 1;
+    out[11] = 0;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = 0;
+    out[15] = 1;
+    return out;
+};
+
+/**
+ * Creates a new mat4 initialized with values from an existing matrix
+ *
+ * @param {mat4} a matrix to clone
+ * @returns {mat4} a new 4x4 matrix
+ */
+mat4.clone = function(a) {
+    var out = new GLMAT_ARRAY_TYPE(16);
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    out[9] = a[9];
+    out[10] = a[10];
+    out[11] = a[11];
+    out[12] = a[12];
+    out[13] = a[13];
+    out[14] = a[14];
+    out[15] = a[15];
+    return out;
+};
+
+/**
+ * Copy the values from one mat4 to another
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.copy = function(out, a) {
+    out[0] = a[0];
+    out[1] = a[1];
+    out[2] = a[2];
+    out[3] = a[3];
+    out[4] = a[4];
+    out[5] = a[5];
+    out[6] = a[6];
+    out[7] = a[7];
+    out[8] = a[8];
+    out[9] = a[9];
+    out[10] = a[10];
+    out[11] = a[11];
+    out[12] = a[12];
+    out[13] = a[13];
+    out[14] = a[14];
+    out[15] = a[15];
+    return out;
+};
+
+/**
+ * Set a mat4 to the identity matrix
+ *
+ * @param {mat4} out the receiving matrix
+ * @returns {mat4} out
+ */
+mat4.identity = function(out) {
+    out[0] = 1;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = 1;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = 1;
+    out[11] = 0;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = 0;
+    out[15] = 1;
+    return out;
+};
+
+/**
+ * Transpose the values of a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.transpose = function(out, a) {
+    // If we are transposing ourselves we can skip a few steps but have to cache some values
+    if (out === a) {
+        var a01 = a[1], a02 = a[2], a03 = a[3],
+            a12 = a[6], a13 = a[7],
+            a23 = a[11];
+
+        out[1] = a[4];
+        out[2] = a[8];
+        out[3] = a[12];
+        out[4] = a01;
+        out[6] = a[9];
+        out[7] = a[13];
+        out[8] = a02;
+        out[9] = a12;
+        out[11] = a[14];
+        out[12] = a03;
+        out[13] = a13;
+        out[14] = a23;
+    } else {
+        out[0] = a[0];
+        out[1] = a[4];
+        out[2] = a[8];
+        out[3] = a[12];
+        out[4] = a[1];
+        out[5] = a[5];
+        out[6] = a[9];
+        out[7] = a[13];
+        out[8] = a[2];
+        out[9] = a[6];
+        out[10] = a[10];
+        out[11] = a[14];
+        out[12] = a[3];
+        out[13] = a[7];
+        out[14] = a[11];
+        out[15] = a[15];
+    }
+    
+    return out;
+};
+
+/**
+ * Inverts a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.invert = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+        b00 = a00 * a11 - a01 * a10,
+        b01 = a00 * a12 - a02 * a10,
+        b02 = a00 * a13 - a03 * a10,
+        b03 = a01 * a12 - a02 * a11,
+        b04 = a01 * a13 - a03 * a11,
+        b05 = a02 * a13 - a03 * a12,
+        b06 = a20 * a31 - a21 * a30,
+        b07 = a20 * a32 - a22 * a30,
+        b08 = a20 * a33 - a23 * a30,
+        b09 = a21 * a32 - a22 * a31,
+        b10 = a21 * a33 - a23 * a31,
+        b11 = a22 * a33 - a23 * a32,
+
+        // Calculate the determinant
+        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+
+    if (!det) { 
+        return null; 
+    }
+    det = 1.0 / det;
+
+    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+
+    return out;
+};
+
+/**
+ * Calculates the adjugate of a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.adjoint = function(out, a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
+    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
+    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
+    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
+    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
+    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
+    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
+    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
+    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
+    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
+    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
+    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
+    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
+    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
+    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
+    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
+    return out;
+};
+
+/**
+ * Calculates the determinant of a mat4
+ *
+ * @param {mat4} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat4.determinant = function (a) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+        b00 = a00 * a11 - a01 * a10,
+        b01 = a00 * a12 - a02 * a10,
+        b02 = a00 * a13 - a03 * a10,
+        b03 = a01 * a12 - a02 * a11,
+        b04 = a01 * a13 - a03 * a11,
+        b05 = a02 * a13 - a03 * a12,
+        b06 = a20 * a31 - a21 * a30,
+        b07 = a20 * a32 - a22 * a30,
+        b08 = a20 * a33 - a23 * a30,
+        b09 = a21 * a32 - a22 * a31,
+        b10 = a21 * a33 - a23 * a31,
+        b11 = a22 * a33 - a23 * a32;
+
+    // Calculate the determinant
+    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+};
+
+/**
+ * Multiplies two mat4's
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the first operand
+ * @param {mat4} b the second operand
+ * @returns {mat4} out
+ */
+mat4.multiply = function (out, a, b) {
+    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+    // Cache only the current line of the second matrix
+    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
+    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+    return out;
+};
+
+/**
+ * Alias for {@link mat4.multiply}
+ * @function
+ */
+mat4.mul = mat4.multiply;
+
+/**
+ * Translate a mat4 by the given vector
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to translate
+ * @param {vec3} v vector to translate by
+ * @returns {mat4} out
+ */
+mat4.translate = function (out, a, v) {
+    var x = v[0], y = v[1], z = v[2],
+        a00, a01, a02, a03,
+        a10, a11, a12, a13,
+        a20, a21, a22, a23;
+
+    if (a === out) {
+        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+    } else {
+        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+
+        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+
+        out[12] = a00 * x + a10 * y + a20 * z + a[12];
+        out[13] = a01 * x + a11 * y + a21 * z + a[13];
+        out[14] = a02 * x + a12 * y + a22 * z + a[14];
+        out[15] = a03 * x + a13 * y + a23 * z + a[15];
+    }
+
+    return out;
+};
+
+/**
+ * Scales the mat4 by the dimensions in the given vec3
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to scale
+ * @param {vec3} v the vec3 to scale the matrix by
+ * @returns {mat4} out
+ **/
+mat4.scale = function(out, a, v) {
+    var x = v[0], y = v[1], z = v[2];
+
+    out[0] = a[0] * x;
+    out[1] = a[1] * x;
+    out[2] = a[2] * x;
+    out[3] = a[3] * x;
+    out[4] = a[4] * y;
+    out[5] = a[5] * y;
+    out[6] = a[6] * y;
+    out[7] = a[7] * y;
+    out[8] = a[8] * z;
+    out[9] = a[9] * z;
+    out[10] = a[10] * z;
+    out[11] = a[11] * z;
+    out[12] = a[12];
+    out[13] = a[13];
+    out[14] = a[14];
+    out[15] = a[15];
+    return out;
+};
+
+/**
+ * Rotates a mat4 by the given angle
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @param {vec3} axis the axis to rotate around
+ * @returns {mat4} out
+ */
+mat4.rotate = function (out, a, rad, axis) {
+    var x = axis[0], y = axis[1], z = axis[2],
+        len = Math.sqrt(x * x + y * y + z * z),
+        s, c, t,
+        a00, a01, a02, a03,
+        a10, a11, a12, a13,
+        a20, a21, a22, a23,
+        b00, b01, b02,
+        b10, b11, b12,
+        b20, b21, b22;
+
+    if (Math.abs(len) < GLMAT_EPSILON) { return null; }
+    
+    len = 1 / len;
+    x *= len;
+    y *= len;
+    z *= len;
+
+    s = Math.sin(rad);
+    c = Math.cos(rad);
+    t = 1 - c;
+
+    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+
+    // Construct the elements of the rotation matrix
+    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+
+    // Perform rotation-specific matrix multiplication
+    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+    out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+    return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the X axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateX = function (out, a, rad) {
+    var s = Math.sin(rad),
+        c = Math.cos(rad),
+        a10 = a[4],
+        a11 = a[5],
+        a12 = a[6],
+        a13 = a[7],
+        a20 = a[8],
+        a21 = a[9],
+        a22 = a[10],
+        a23 = a[11];
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+        out[0]  = a[0];
+        out[1]  = a[1];
+        out[2]  = a[2];
+        out[3]  = a[3];
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+
+    // Perform axis-specific matrix multiplication
+    out[4] = a10 * c + a20 * s;
+    out[5] = a11 * c + a21 * s;
+    out[6] = a12 * c + a22 * s;
+    out[7] = a13 * c + a23 * s;
+    out[8] = a20 * c - a10 * s;
+    out[9] = a21 * c - a11 * s;
+    out[10] = a22 * c - a12 * s;
+    out[11] = a23 * c - a13 * s;
+    return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the Y axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateY = function (out, a, rad) {
+    var s = Math.sin(rad),
+        c = Math.cos(rad),
+        a00 = a[0],
+        a01 = a[1],
+        a02 = a[2],
+        a03 = a[3],
+        a20 = a[8],
+        a21 = a[9],
+        a22 = a[10],
+        a23 = a[11];
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged rows
+        out[4]  = a[4];
+        out[5]  = a[5];
+        out[6]  = a[6];
+        out[7]  = a[7];
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+
+    // Perform axis-specific matrix multiplication
+    out[0] = a00 * c - a20 * s;
+    out[1] = a01 * c - a21 * s;
+    out[2] = a02 * c - a22 * s;
+    out[3] = a03 * c - a23 * s;
+    out[8] = a00 * s + a20 * c;
+    out[9] = a01 * s + a21 * c;
+    out[10] = a02 * s + a22 * c;
+    out[11] = a03 * s + a23 * c;
+    return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the Z axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateZ = function (out, a, rad) {
+    var s = Math.sin(rad),
+        c = Math.cos(rad),
+        a00 = a[0],
+        a01 = a[1],
+        a02 = a[2],
+        a03 = a[3],
+        a10 = a[4],
+        a11 = a[5],
+        a12 = a[6],
+        a13 = a[7];
+
+    if (a !== out) { // If the source and destination differ, copy the unchanged last row
+        out[8]  = a[8];
+        out[9]  = a[9];
+        out[10] = a[10];
+        out[11] = a[11];
+        out[12] = a[12];
+        out[13] = a[13];
+        out[14] = a[14];
+        out[15] = a[15];
+    }
+
+    // Perform axis-specific matrix multiplication
+    out[0] = a00 * c + a10 * s;
+    out[1] = a01 * c + a11 * s;
+    out[2] = a02 * c + a12 * s;
+    out[3] = a03 * c + a13 * s;
+    out[4] = a10 * c - a00 * s;
+    out[5] = a11 * c - a01 * s;
+    out[6] = a12 * c - a02 * s;
+    out[7] = a13 * c - a03 * s;
+    return out;
+};
+
+/**
+ * Creates a matrix from a quaternion rotation and vector translation
+ * This is equivalent to (but much faster than):
+ *
+ *     mat4.identity(dest);
+ *     mat4.translate(dest, vec);
+ *     var quatMat = mat4.create();
+ *     quat4.toMat4(quat, quatMat);
+ *     mat4.multiply(dest, quatMat);
+ *
+ * @param {mat4} out mat4 receiving operation result
+ * @param {quat4} q Rotation quaternion
+ * @param {vec3} v Translation vector
+ * @returns {mat4} out
+ */
+mat4.fromRotationTranslation = function (out, q, v) {
+    // Quaternion math
+    var x = q[0], y = q[1], z = q[2], w = q[3],
+        x2 = x + x,
+        y2 = y + y,
+        z2 = z + z,
+
+        xx = x * x2,
+        xy = x * y2,
+        xz = x * z2,
+        yy = y * y2,
+        yz = y * z2,
+        zz = z * z2,
+        wx = w * x2,
+        wy = w * y2,
+        wz = w * z2;
+
+    out[0] = 1 - (yy + zz);
+    out[1] = xy + wz;
+    out[2] = xz - wy;
+    out[3] = 0;
+    out[4] = xy - wz;
+    out[5] = 1 - (xx + zz);
+    out[6] = yz + wx;
+    out[7] = 0;
+    out[8] = xz + wy;
+    out[9] = yz - wx;
+    out[10] = 1 - (xx + yy);
+    out[11] = 0;
+    out[12] = v[0];
+    out[13] = v[1];
+    out[14] = v[2];
+    out[15] = 1;
+    
+    return out;
+};
+
+/**
+* Calculates a 4x4 matrix from the given quaternion
+*
+* @param {mat4} out mat4 receiving operation result
+* @param {quat} q Quaternion to create matrix from
+*
+* @returns {mat4} out
+*/
+mat4.fromQuat = function (out, q) {
+    var x = q[0], y = q[1], z = q[2], w = q[3],
+        x2 = x + x,
+        y2 = y + y,
+        z2 = z + z,
+
+        xx = x * x2,
+        xy = x * y2,
+        xz = x * z2,
+        yy = y * y2,
+        yz = y * z2,
+        zz = z * z2,
+        wx = w * x2,
+        wy = w * y2,
+        wz = w * z2;
+
+    out[0] = 1 - (yy + zz);
+    out[1] = xy + wz;
+    out[2] = xz - wy;
+    out[3] = 0;
+
+    out[4] = xy - wz;
+    out[5] = 1 - (xx + zz);
+    out[6] = yz + wx;
+    out[7] = 0;
+
+    out[8] = xz + wy;
+    out[9] = yz - wx;
+    out[10] = 1 - (xx + yy);
+    out[11] = 0;
+
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = 0;
+    out[15] = 1;
+
+    return out;
+};
+
+/**
+ * Generates a frustum matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {Number} left Left bound of the frustum
+ * @param {Number} right Right bound of the frustum
+ * @param {Number} bottom Bottom bound of the frustum
+ * @param {Number} top Top bound of the frustum
+ * @param {Number} near Near bound of the frustum
+ * @param {Number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.frustum = function (out, left, right, bottom, top, near, far) {
+    var rl = 1 / (right - left),
+        tb = 1 / (top - bottom),
+        nf = 1 / (near - far);
+    out[0] = (near * 2) * rl;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = (near * 2) * tb;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = (right + left) * rl;
+    out[9] = (top + bottom) * tb;
+    out[10] = (far + near) * nf;
+    out[11] = -1;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = (far * near * 2) * nf;
+    out[15] = 0;
+    return out;
+};
+
+/**
+ * Generates a perspective projection matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {number} fovy Vertical field of view in radians
+ * @param {number} aspect Aspect ratio. typically viewport width/height
+ * @param {number} near Near bound of the frustum
+ * @param {number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.perspective = function (out, fovy, aspect, near, far) {
+    var f = 1.0 / Math.tan(fovy / 2),
+        nf = 1 / (near - far);
+    out[0] = f / aspect;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = f;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = (far + near) * nf;
+    out[11] = -1;
+    out[12] = 0;
+    out[13] = 0;
+    out[14] = (2 * far * near) * nf;
+    out[15] = 0;
+    return out;
+};
+
+/**
+ * Generates a orthogonal projection matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {number} left Left bound of the frustum
+ * @param {number} right Right bound of the frustum
+ * @param {number} bottom Bottom bound of the frustum
+ * @param {number} top Top bound of the frustum
+ * @param {number} near Near bound of the frustum
+ * @param {number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.ortho = function (out, left, right, bottom, top, near, far) {
+    var lr = 1 / (left - right),
+        bt = 1 / (bottom - top),
+        nf = 1 / (near - far);
+    out[0] = -2 * lr;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 0;
+    out[4] = 0;
+    out[5] = -2 * bt;
+    out[6] = 0;
+    out[7] = 0;
+    out[8] = 0;
+    out[9] = 0;
+    out[10] = 2 * nf;
+    out[11] = 0;
+    out[12] = (left + right) * lr;
+    out[13] = (top + bottom) * bt;
+    out[14] = (far + near) * nf;
+    out[15] = 1;
+    return out;
+};
+
+/**
+ * Generates a look-at matrix with the given eye position, focal point, and up axis
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {vec3} eye Position of the viewer
+ * @param {vec3} center Point the viewer is looking at
+ * @param {vec3} up vec3 pointing up
+ * @returns {mat4} out
+ */
+mat4.lookAt = function (out, eye, center, up) {
+    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+        eyex = eye[0],
+        eyey = eye[1],
+        eyez = eye[2],
+        upx = up[0],
+        upy = up[1],
+        upz = up[2],
+        centerx = center[0],
+        centery = center[1],
+        centerz = center[2];
+
+    if (Math.abs(eyex - centerx) < GLMAT_EPSILON &&
+        Math.abs(eyey - centery) < GLMAT_EPSILON &&
+        Math.abs(eyez - centerz) < GLMAT_EPSILON) {
+        return mat4.identity(out);
+    }
+
+    z0 = eyex - centerx;
+    z1 = eyey - centery;
+    z2 = eyez - centerz;
+
+    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+    z0 *= len;
+    z1 *= len;
+    z2 *= len;
+
+    x0 = upy * z2 - upz * z1;
+    x1 = upz * z0 - upx * z2;
+    x2 = upx * z1 - upy * z0;
+    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+    if (!len) {
+        x0 = 0;
+        x1 = 0;
+        x2 = 0;
+    } else {
+        len = 1 / len;
+        x0 *= len;
+        x1 *= len;
+        x2 *= len;
+    }
+
+    y0 = z1 * x2 - z2 * x1;
+    y1 = z2 * x0 - z0 * x2;
+    y2 = z0 * x1 - z1 * x0;
+
+    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+    if (!len) {
+        y0 = 0;
+        y1 = 0;
+        y2 = 0;
+    } else {
+        len = 1 / len;
+        y0 *= len;
+        y1 *= len;
+        y2 *= len;
+    }
+
+    out[0] = x0;
+    out[1] = y0;
+    out[2] = z0;
+    out[3] = 0;
+    out[4] = x1;
+    out[5] = y1;
+    out[6] = z1;
+    out[7] = 0;
+    out[8] = x2;
+    out[9] = y2;
+    out[10] = z2;
+    out[11] = 0;
+    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+    out[15] = 1;
+
+    return out;
+};
+
+/**
+ * Returns a string representation of a mat4
+ *
+ * @param {mat4} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat4.str = function (a) {
+    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
+                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
+                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' + 
+                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.mat4 = mat4;
+}
+;
+/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation 
+    and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+
+/**
+ * @class Quaternion
+ * @name quat
+ */
+
+var quat = {};
+
+var quatIdentity = new Float32Array([0, 0, 0, 1]);
+
+/**
+ * Creates a new identity quat
+ *
+ * @returns {quat} a new quaternion
+ */
+quat.create = function() {
+    var out = new GLMAT_ARRAY_TYPE(4);
+    out[0] = 0;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    return out;
+};
+
+/**
+ * Creates a new quat initialized with values from an existing quaternion
+ *
+ * @param {quat} a quaternion to clone
+ * @returns {quat} a new quaternion
+ * @function
+ */
+quat.clone = vec4.clone;
+
+/**
+ * Creates a new quat initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {quat} a new quaternion
+ * @function
+ */
+quat.fromValues = vec4.fromValues;
+
+/**
+ * Copy the values from one quat to another
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the source quaternion
+ * @returns {quat} out
+ * @function
+ */
+quat.copy = vec4.copy;
+
+/**
+ * Set the components of a quat to the given values
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {quat} out
+ * @function
+ */
+quat.set = vec4.set;
+
+/**
+ * Set a quat to the identity quaternion
+ *
+ * @param {quat} out the receiving quaternion
+ * @returns {quat} out
+ */
+quat.identity = function(out) {
+    out[0] = 0;
+    out[1] = 0;
+    out[2] = 0;
+    out[3] = 1;
+    return out;
+};
+
+/**
+ * Sets a quat from the given angle and rotation axis,
+ * then returns it.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {vec3} axis the axis around which to rotate
+ * @param {Number} rad the angle in radians
+ * @returns {quat} out
+ **/
+quat.setAxisAngle = function(out, axis, rad) {
+    rad = rad * 0.5;
+    var s = Math.sin(rad);
+    out[0] = s * axis[0];
+    out[1] = s * axis[1];
+    out[2] = s * axis[2];
+    out[3] = Math.cos(rad);
+    return out;
+};
+
+/**
+ * Adds two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {quat} out
+ * @function
+ */
+quat.add = vec4.add;
+
+/**
+ * Multiplies two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {quat} out
+ */
+quat.multiply = function(out, a, b) {
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+
+    out[0] = ax * bw + aw * bx + ay * bz - az * by;
+    out[1] = ay * bw + aw * by + az * bx - ax * bz;
+    out[2] = az * bw + aw * bz + ax * by - ay * bx;
+    out[3] = aw * bw - ax * bx - ay * by - az * bz;
+    return out;
+};
+
+/**
+ * Alias for {@link quat.multiply}
+ * @function
+ */
+quat.mul = quat.multiply;
+
+/**
+ * Scales a quat by a scalar number
+ *
+ * @param {quat} out the receiving vector
+ * @param {quat} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {quat} out
+ * @function
+ */
+quat.scale = vec4.scale;
+
+/**
+ * Rotates a quaternion by the given angle around the X axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateX = function (out, a, rad) {
+    rad *= 0.5; 
+
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bx = Math.sin(rad), bw = Math.cos(rad);
+
+    out[0] = ax * bw + aw * bx;
+    out[1] = ay * bw + az * bx;
+    out[2] = az * bw - ay * bx;
+    out[3] = aw * bw - ax * bx;
+    return out;
+};
+
+/**
+ * Rotates a quaternion by the given angle around the Y axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateY = function (out, a, rad) {
+    rad *= 0.5; 
+
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        by = Math.sin(rad), bw = Math.cos(rad);
+
+    out[0] = ax * bw - az * by;
+    out[1] = ay * bw + aw * by;
+    out[2] = az * bw + ax * by;
+    out[3] = aw * bw - ay * by;
+    return out;
+};
+
+/**
+ * Rotates a quaternion by the given angle around the Z axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateZ = function (out, a, rad) {
+    rad *= 0.5; 
+
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bz = Math.sin(rad), bw = Math.cos(rad);
+
+    out[0] = ax * bw + ay * bz;
+    out[1] = ay * bw - ax * bz;
+    out[2] = az * bw + aw * bz;
+    out[3] = aw * bw - az * bz;
+    return out;
+};
+
+/**
+ * Calculates the W component of a quat from the X, Y, and Z components.
+ * Assumes that quaternion is 1 unit in length.
+ * Any existing W component will be ignored.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate W component of
+ * @returns {quat} out
+ */
+quat.calculateW = function (out, a) {
+    var x = a[0], y = a[1], z = a[2];
+
+    out[0] = x;
+    out[1] = y;
+    out[2] = z;
+    out[3] = -Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
+    return out;
+};
+
+/**
+ * Calculates the dot product of two quat's
+ *
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {Number} dot product of a and b
+ * @function
+ */
+quat.dot = vec4.dot;
+
+/**
+ * Performs a linear interpolation between two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {quat} out
+ * @function
+ */
+quat.lerp = vec4.lerp;
+
+/**
+ * Performs a spherical linear interpolation between two quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {quat} out
+ */
+quat.slerp = function (out, a, b, t) {
+    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+        bx = b[0], by = b[1], bz = b[2], bw = b[3];
+
+    var cosHalfTheta = ax * bx + ay * by + az * bz + aw * bw,
+        halfTheta,
+        sinHalfTheta,
+        ratioA,
+        ratioB;
+
+    if (Math.abs(cosHalfTheta) >= 1.0) {
+        if (out !== a) {
+            out[0] = ax;
+            out[1] = ay;
+            out[2] = az;
+            out[3] = aw;
+        }
+        return out;
+    }
+
+    halfTheta = Math.acos(cosHalfTheta);
+    sinHalfTheta = Math.sqrt(1.0 - cosHalfTheta * cosHalfTheta);
+
+    if (Math.abs(sinHalfTheta) < 0.001) {
+        out[0] = (ax * 0.5 + bx * 0.5);
+        out[1] = (ay * 0.5 + by * 0.5);
+        out[2] = (az * 0.5 + bz * 0.5);
+        out[3] = (aw * 0.5 + bw * 0.5);
+        return out;
+    }
+
+    ratioA = Math.sin((1 - t) * halfTheta) / sinHalfTheta;
+    ratioB = Math.sin(t * halfTheta) / sinHalfTheta;
+
+    out[0] = (ax * ratioA + bx * ratioB);
+    out[1] = (ay * ratioA + by * ratioB);
+    out[2] = (az * ratioA + bz * ratioB);
+    out[3] = (aw * ratioA + bw * ratioB);
+
+    return out;
+};
+
+/**
+ * Calculates the inverse of a quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate inverse of
+ * @returns {quat} out
+ */
+quat.invert = function(out, a) {
+    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
+        invDot = dot ? 1.0/dot : 0;
+    
+    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
+
+    out[0] = -a0*invDot;
+    out[1] = -a1*invDot;
+    out[2] = -a2*invDot;
+    out[3] = a3*invDot;
+    return out;
+};
+
+/**
+ * Calculates the conjugate of a quat
+ * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate conjugate of
+ * @returns {quat} out
+ */
+quat.conjugate = function (out, a) {
+    out[0] = -a[0];
+    out[1] = -a[1];
+    out[2] = -a[2];
+    out[3] = a[3];
+    return out;
+};
+
+/**
+ * Calculates the length of a quat
+ *
+ * @param {quat} a vector to calculate length of
+ * @returns {Number} length of a
+ * @function
+ */
+quat.length = vec4.length;
+
+/**
+ * Alias for {@link quat.length}
+ * @function
+ */
+quat.len = quat.length;
+
+/**
+ * Calculates the squared length of a quat
+ *
+ * @param {quat} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ * @function
+ */
+quat.squaredLength = vec4.squaredLength;
+
+/**
+ * Alias for {@link quat.squaredLength}
+ * @function
+ */
+quat.sqrLen = quat.squaredLength;
+
+/**
+ * Normalize a quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quaternion to normalize
+ * @returns {quat} out
+ * @function
+ */
+quat.normalize = vec4.normalize;
+
+/**
+ * Creates a quaternion from the given 3x3 rotation matrix.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {mat3} m rotation matrix
+ * @returns {quat} out
+ * @function
+ */
+quat.fromMat3 = (function() {
+    var s_iNext = [1,2,0];
+    return function(out, m) {
+        // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
+        // article "Quaternion Calculus and Fast Animation".
+        var fTrace = m[0] + m[4] + m[8];
+        var fRoot;
+
+        if ( fTrace > 0.0 ) {
+            // |w| > 1/2, may as well choose w > 1/2
+            fRoot = Math.sqrt(fTrace + 1.0);  // 2w
+            out[3] = 0.5 * fRoot;
+            fRoot = 0.5/fRoot;  // 1/(4w)
+            out[0] = (m[7]-m[5])*fRoot;
+            out[1] = (m[2]-m[6])*fRoot;
+            out[2] = (m[3]-m[1])*fRoot;
+        } else {
+            // |w| <= 1/2
+            var i = 0;
+            if ( m[4] > m[0] )
+              i = 1;
+            if ( m[8] > m[i*3+i] )
+              i = 2;
+            var j = s_iNext[i];
+            var k = s_iNext[j];
+            
+            fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
+            out[i] = 0.5 * fRoot;
+            fRoot = 0.5 / fRoot;
+            out[3] = (m[k*3+j] - m[j*3+k]) * fRoot;
+            out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
+            out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
+        }
+        
+        return out;
+    };
+})();
+
+/**
+ * Returns a string representation of a quatenion
+ *
+ * @param {quat} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+quat.str = function (a) {
+    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+    exports.quat = quat;
+}
+;
+
+
+
+
+
+
+
+
+
+
+
+
+
+  })(shim.exports);
+})();
+
+},{}],37:[function(require,module,exports){
+var tic = require('tic')();
+var createAtlas = require('atlaspack');
+
+function Texture(opts) {
+  if (!(this instanceof Texture)) return new Texture(opts || {});
+  var self = this;
+  this.game = opts.game; delete opts.game;
+  this.THREE = this.game.THREE;
+  this.materials = [];
+  this.texturePath = opts.texturePath || '/textures/';
+  this.loading = 0;
+
+  var useFlatColors = opts.materialFlatColor === true;
+  delete opts.materialFlatColor;
+
+  this.options = defaults(opts || {}, {
+    crossOrigin: 'Anonymous',
+    materialParams: defaults(opts.materialParams || {}, {
+      ambient: 0xbbbbbb
+    }),
+    materialType: this.THREE.MeshLambertMaterial,
+    applyTextureParams: function(map) {
+      map.magFilter = self.THREE.NearestFilter;
+      map.minFilter = self.THREE.LinearMipMapLinearFilter;
+    }
+  });
+
+  // create a canvas for the texture atlas
+  this.canvas = (typeof document !== 'undefined') ? document.createElement('canvas') : {};
+  this.canvas.width = opts.atlasWidth || 512;
+  this.canvas.height = opts.atlasHeight || 512;
+
+  // create core atlas and texture
+  this.atlas = createAtlas(this.canvas);
+  this.atlas.tilepad = true;
+  this._atlasuv = false;
+  this._atlaskey = false;
+  this.texture = new this.THREE.Texture(this.canvas);
+  this.options.applyTextureParams(this.texture);
+
+  if (useFlatColors) {
+    // If were using simple colors
+    this.material = new this.THREE.MeshBasicMaterial({
+      vertexColors: this.THREE.VertexColors
+    });
+  } else {
+    // load a first material for easy application to meshes
+    this.material = new this.options.materialType(this.options.materialParams);
+    this.material.map = this.texture;
+    this.material.transparent = true;
+  }
+
+  // a place for meshes to wait while textures are loading
+  this._meshQueue = [];
+}
+module.exports = Texture;
+
+Texture.prototype.load = function(names, done) {
+  var self = this;
+  if (!Array.isArray(names)) names = [names];
+  done = done || function() {};
+  this.loading++;
+
+  var materialSlice = names.map(self._expandName);
+  self.materials = self.materials.concat(materialSlice);
+
+  // load onto the texture atlas
+  var load = Object.create(null);
+  materialSlice.forEach(function(mats) {
+    mats.forEach(function(mat) {
+      if (mat.slice(0, 1) === '#') return;
+      // todo: check if texture already exists
+      load[mat] = true;
+    });
+  });
+  if (Object.keys(load).length > 0) {
+    each(Object.keys(load), self.pack.bind(self), function() {
+      self._afterLoading();
+      done(materialSlice);
+    });
+  } else {
+    self._afterLoading();
+  }
+};
+
+Texture.prototype.pack = function(name, done) {
+  var self = this;
+  function pack(img) {
+    var node = self.atlas.pack(img);
+    if (node === false) {
+      self.atlas = self.atlas.expand(img);
+      self.atlas.tilepad = true;
+    }
+    done();
+  }
+  if (typeof name === 'string') {
+    var img = new Image();
+    img.id = name;
+    img.crossOrigin = self.options.crossOrigin;
+    img.src = self.texturePath + ext(name);
+    img.onload = function() {
+      pack(img);
+    };
+    img.onerror = function() {
+      console.error('Couldn\'t load URL [' + img.src + ']');
+      done();
+    };
+  } else {
+    pack(name);
+  }
+  return self;
+};
+
+Texture.prototype.find = function(name) {
+  var self = this;
+  var type = 0;
+  self.materials.forEach(function(mats, i) {
+    mats.forEach(function(mat) {
+      if (mat === name) {
+        type = i + 1;
+        return false;
+      }
+    });
+    if (type !== 0) return false;
+  });
+  return type;
+};
+
+Texture.prototype._expandName = function(name) {
+  if (name === null) return Array(6);
+  if (name.top) return [name.back, name.front, name.top, name.bottom, name.left, name.right];
+  if (!Array.isArray(name)) name = [name];
+  // load the 0 texture to all
+  if (name.length === 1) name = [name[0],name[0],name[0],name[0],name[0],name[0]];
+  // 0 is top/bottom, 1 is sides
+  if (name.length === 2) name = [name[1],name[1],name[0],name[0],name[1],name[1]];
+  // 0 is top, 1 is bottom, 2 is sides
+  if (name.length === 3) name = [name[2],name[2],name[0],name[1],name[2],name[2]];
+  // 0 is top, 1 is bottom, 2 is front/back, 3 is left/right
+  if (name.length === 4) name = [name[2],name[2],name[0],name[1],name[3],name[3]];
+  return name;
+};
+
+Texture.prototype._afterLoading = function() {
+  var self = this;
+  function alldone() {
+    self.loading--;
+    self._atlasuv = self.atlas.uv(self.canvas.width, self.canvas.height);
+    self._atlaskey = Object.create(null);
+    self.atlas.index().forEach(function(key) {
+      self._atlaskey[key.name] = key;
+    });
+    self.texture.needsUpdate = true;
+    self.material.needsUpdate = true;
+    //window.open(self.canvas.toDataURL());
+    if (self._meshQueue.length > 0) {
+      self._meshQueue.forEach(function(queue, i) {
+        self.paint.apply(queue.self, queue.args);
+        delete self._meshQueue[i];
+      });
+    }
+  }
+  self._powerof2(function() {
+    setTimeout(alldone, 100);
+  });
+};
+
+// Ensure the texture stays at a power of 2 for mipmaps
+// this is cheating :D
+Texture.prototype._powerof2 = function(done) {
+  var w = this.canvas.width;
+  var h = this.canvas.height;
+  function pow2(x) {
+    x--;
+    x |= x >> 1;
+    x |= x >> 2;
+    x |= x >> 4;
+    x |= x >> 8;
+    x |= x >> 16;
+    x++;
+    return x;
+  }
+  if (h > w) w = h;
+  var old = this.canvas.getContext('2d').getImageData(0, 0, this.canvas.width, this.canvas.height);
+  this.canvas.width = this.canvas.height = pow2(w);
+  this.canvas.getContext('2d').putImageData(old, 0, 0);
+  done();
+};
+
+Texture.prototype.paint = function(mesh, materials) {
+  var self = this;
+
+  // if were loading put into queue
+  if (self.loading > 0) {
+    self._meshQueue.push({self: self, args: arguments});
+    return false;
+  }
+
+  var isVoxelMesh = (materials) ? false : true;
+  if (!isVoxelMesh) materials = self._expandName(materials);
+
+  mesh.geometry.faces.forEach(function(face, i) {
+    if (mesh.geometry.faceVertexUvs[0].length < 1) return;
+
+    if (isVoxelMesh) {
+      var index = Math.floor(face.color.b*255 + face.color.g*255*255 + face.color.r*255*255*255);
+      materials = self.materials[index - 1];
+      if (!materials) materials = self.materials[0];
+    }
+
+    // BACK, FRONT, TOP, BOTTOM, LEFT, RIGHT
+    var name = materials[0] || '';
+    if      (face.normal.z === 1)  name = materials[1] || '';
+    else if (face.normal.y === 1)  name = materials[2] || '';
+    else if (face.normal.y === -1) name = materials[3] || '';
+    else if (face.normal.x === -1) name = materials[4] || '';
+    else if (face.normal.x === 1)  name = materials[5] || '';
+
+    // if just a simple color
+    if (name.slice(0, 1) === '#') {
+      self.setColor(mesh.geometry.faces[i], name);
+      return;
+    }
+
+    var atlasuv = self._atlasuv[name];
+    if (!atlasuv) return;
+
+    // 0 -- 1
+    // |    |
+    // 3 -- 2
+    // faces on these meshes are flipped vertically, so we map in reverse
+    // TODO: tops need rotate
+    if (isVoxelMesh) {
+      if (face.normal.z === -1 || face.normal.x === 1) {
+        atlasuv = uvrot(atlasuv, 90);
+      }
+      atlasuv = uvinvert(atlasuv);
+    } else {
+      atlasuv = uvrot(atlasuv, -90);
+    }
+    for (var j = 0; j < 4; j++) {
+      mesh.geometry.faceVertexUvs[0][i][j].set(atlasuv[j][0], 1 - atlasuv[j][1]);
+    }
+  });
+
+  mesh.geometry.uvsNeedUpdate = true;
+};
+
+Texture.prototype.sprite = function(name, w, h, cb) {
+  var self = this;
+  if (typeof w === 'function') { cb = w; w = null; }
+  if (typeof h === 'function') { cb = h; h = null; }
+  w = w || 16; h = h || w;
+  self.loading++;
+  var img = new Image();
+  img.src = self.texturePath + ext(name);
+  img.onerror = cb;
+  img.onload = function() {
+    var canvases = [];
+    for (var x = 0; x < img.width; x += w) {
+      for (var y = 0; y < img.height; y += h) {
+        var canvas = document.createElement('canvas');
+        canvas.width = w; canvas.height = h;
+        canvas.name = name + '_' + x + '_' + y;
+        canvas.getContext('2d').drawImage(img, x, y, w, h, 0, 0, w, h);
+        canvases.push(canvas);
+      }
+    }
+    var textures = [];
+    each(canvases, function(canvas, next) {
+      var tex = new Image();
+      tex.name = canvas.name;
+      tex.src = canvas.toDataURL();
+      tex.onload = function() {
+        self.pack(tex, next);
+      };
+      tex.onerror = next;
+      textures.push([
+        tex.name, tex.name, tex.name,
+        tex.name, tex.name, tex.name
+      ]);
+    }, function() {
+      self._afterLoading();
+      delete canvases;
+      self.materials = self.materials.concat(textures);
+      cb(textures);
+    });
+  };
+  return self;
+};
+
+Texture.prototype.animate = function(mesh, names, delay) {
+  var self = this;
+  delay = delay || 1000;
+  if (!Array.isArray(names) || names.length < 2) return false;
+  var i = 0;
+  var mat = new this.options.materialType(this.options.materialParams);
+  mat.map = this.texture;
+  mat.transparent = true;
+  mat.needsUpdate = true;
+  tic.interval(function() {
+    self.paint(mesh, names[i % names.length]);
+    i++;
+  }, delay);
+  return mat;
+};
+
+Texture.prototype.tick = function(dt) {
+  tic.tick(dt);
+};
+
+Texture.prototype.setColor = function(face, color) {
+  var rgb = hex2rgb(color);
+  face.color.setRGB(rgb[0], rgb[1], rgb[2]);
+  var ld = this._lightDark(color);
+
+  // TODO: AO should be figured better than this
+  if (face.normal.y === 1)       face.vertexColors = [ld[0], ld[0], ld[0], ld[0]];
+  else if (face.normal.y === -1) face.vertexColors = [ld[1], ld[1], ld[1], ld[1]];
+  else if (face.normal.x === 1)  face.vertexColors = [ld[1], ld[0], ld[0], ld[1]];
+  else if (face.normal.x === -1) face.vertexColors = [ld[1], ld[1], ld[0], ld[0]];
+  else if (face.normal.z === 1)  face.vertexColors = [ld[1], ld[1], ld[0], ld[0]];
+  else                           face.vertexColors = [ld[1], ld[0], ld[0], ld[1]];
+};
+
+Texture.prototype._lightDark = memoize(function(color) {
+  var light = new this.THREE.Color(color);
+  var hsl = light.getHSL();
+  var dark = light.clone();
+  dark.setHSL(hsl.h, hsl.s, hsl.l - 0.1);
+  return [light, dark];
+});
+
+function uvrot(coords, deg) {
+  if (deg === 0) return coords;
+  var c = [];
+  var i = (4 - Math.ceil(deg / 90)) % 4;
+  for (var j = 0; j < 4; j++) {
+    c.push(coords[i]);
+    if (i === 3) i = 0; else i++;
+  }
+  return c;
+}
+
+function uvinvert(coords) {
+  var c = coords.slice(0);
+  return [c[3], c[2], c[1], c[0]];
+}
+
+function ext(name) {
+  return (String(name).indexOf('.') !== -1) ? name : name + '.png';
+}
+
+function defaults(obj) {
+  [].slice.call(arguments, 1).forEach(function(from) {
+    if (from) for (var k in from) if (obj[k] == null) obj[k] = from[k];
+  });
+  return obj;
+}
+
+function each(arr, it, done) {
+  var count = 0;
+  arr.forEach(function(a) {
+    it(a, function() {
+      count++;
+      if (count >= arr.length) done();
+    });
+  });
+}
+
+function hex2rgb(hex) {
+  if (hex[0] === '#') hex = hex.substr(1);
+  return [parseInt(hex.substr(0,2), 16)/255, parseInt(hex.substr(2,2), 16)/255, parseInt(hex.substr(4,2), 16)/255];
+}
+
+function memoize(func) {
+  function memoized() {
+    var cache = memoized.cache, key = arguments[0];
+    return hasOwnProperty.call(cache, key)
+      ? cache[key]
+      : (cache[key] = func.apply(this, arguments));
+  }
+  memoized.cache = {};
+  return memoized;
+}
+
+},{"atlaspack":38,"tic":29}],38:[function(require,module,exports){
+(function (global){
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.atlaspack=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/*
+ * atlaspack
+ * https://github.com/shama/atlaspack
+ *
+ * Copyright (c) 2014 Kyle Robinson Young
+ * Licensed under the MIT license.
+ *
+ * Based on Nick Welch's binpack: https://github.com/mackstann/binpack
+ */
+
+function Rect(x, y, w, h) {
+  this.x = x; this.y = y;
+  this.w = w; this.h = h;
+}
+
+Rect.prototype.fitsIn = function(outer) {
+  return outer.w >= this.w && outer.h >= this.h;
+};
+
+Rect.prototype.sameSizeAs = function(other) {
+  return this.w === other.w && this.h === other.h;
+};
+
+function Atlas(x, y, w, h) {
+  if (arguments.length === 1) {
+    this.canvas = x;
+    x = y = 0;
+    w = this.canvas.width;
+    h = this.canvas.height;
+  }
+  if (arguments.length === 2) {
+    w = x; h = y; x = y = 0;
+  }
+  this.left = this.right = null;
+  this.rect = new Rect(x, y, w, h);
+  this.filled = false;
+  this.tilepad = false;
+  this._cache = [];
+  this._uvcache = Object.create(null);
+}
+module.exports = function() {
+  if (arguments.length === 1) { return new Atlas(arguments[0]); }
+  if (arguments.length === 2) { return new Atlas(arguments[0], arguments[1]); }
+  return new Atlas(arguments[0], arguments[1], arguments[2], arguments[3]);
+};
+module.exports.Atlas = Atlas;
+module.exports.Rect = Rect;
+
+// pack image/rect to the atlas
+Atlas.prototype.pack = function(rect) {
+  this._cache = [];
+  this._uvcache = Object.create(null);
+  rect = this._toRect(rect);
+
+  if (this.img && this.tilepad) {
+    rect = this._tilepad(rect);
+  }
+
+  if (this.left !== null) {
+    return this._ontoCanvas(this.left.pack(rect) || this.right.pack(rect));
+  }
+  // if atlas filled or wont fit
+  if (this.filled || !rect.fitsIn(this.rect)) {
+    return false;
+  }
+  // if this atlas has been filled
+  if (rect.sameSizeAs(this.rect)) {
+    this.filled = true;
+    return this._ontoCanvas(this);
+  }
+  if ((this.rect.w - rect.w) > (this.rect.h - rect.h)) {
+    this.left = new Atlas(this.rect.x, this.rect.y, rect.w, this.rect.h);
+    this.right = new Atlas(this.rect.x + rect.w, this.rect.y, this.rect.w - rect.w, this.rect.h);
+  } else {
+    this.left = new Atlas(this.rect.x, this.rect.y, this.rect.w, rect.h);
+    this.right = new Atlas(this.rect.x, this.rect.y + rect.h, this.rect.w, this.rect.h - rect.h);
+  }
+  return this._ontoCanvas(this.left.pack(rect));
+};
+
+Atlas.prototype.expand = function(rect) {
+  var self = this;
+  rect = this._toRect(rect);
+
+  if (this.img && this.tilepad) {
+    rect = this._tilepad(rect);
+  }
+
+  var atlas;
+  if (this.rect.w < this.rect.h) {
+    atlas = new Atlas(0, 0, this.rect.w + rect.w, this.rect.h);
+    atlas.right = new Atlas(this.rect.w, 0, rect.w, this.rect.h);
+    atlas.left = this;
+  } else {
+    atlas = new Atlas(0, 0, this.rect.w, this.rect.h + rect.h);
+    atlas.right = new Atlas(0, this.rect.h, this.rect.w, rect.h);
+    atlas.left = this;
+  }
+
+  ['canvas', 'context', 'img'].forEach(function(p) {
+    if (self[p]) {
+      atlas[p] = self[p];
+      self[p] = null;
+    }
+  });
+
+  // resize canvas
+  if (atlas.canvas) {
+    if (!atlas.context) {
+      atlas.context = atlas.canvas.getContext('2d');
+    }
+    var old = atlas.context.getImageData(0, 0, atlas.canvas.width, atlas.canvas.height);
+    atlas.canvas.width = atlas.rect.w;
+    atlas.canvas.height = atlas.rect.h;
+    atlas.context.putImageData(old, 0, 0);
+  }
+
+  return (atlas.pack(rect) === false) ? atlas.expand(rect) : atlas;
+};
+
+Atlas.prototype.index = function() {
+  var self = this;
+  if (self._cache.length > 0) {
+    return self._cache;
+  }
+  (function loop(atlas) {
+    if (atlas.left !== null) {
+      loop(atlas.left);
+      loop(atlas.right);
+    } else if (atlas.rect.name) {
+      self._cache.push(atlas.rect);
+    }
+  }(self));
+  return self._cache;
+};
+
+Atlas.prototype.uv = function(w, h) {
+  var self = this;
+  w = w || self.rect.w;
+  h = h || self.rect.h;
+  var isPad = this.tilepad;
+  (function loop(atlas) {
+    if (atlas.left !== null) {
+      loop(atlas.left);
+      loop(atlas.right);
+    } else if (typeof atlas.rect.name !== 'undefined') {
+      var p = (isPad) ? atlas.rect.w / 4 : 0;
+      self._uvcache[atlas.rect.name] = [
+        [atlas.rect.x + p, atlas.rect.y + p],
+        [(atlas.rect.x + p) + (atlas.rect.w - (p * 2)), atlas.rect.y + p],
+        [(atlas.rect.x + p) + (atlas.rect.w - (p * 2)), (atlas.rect.y + p) + (atlas.rect.h - (p * 2))],
+        [(atlas.rect.x + p), (atlas.rect.y + p) + (atlas.rect.h - (p * 2))],
+      ].map(function(uv) {
+        if (uv[0] !== 0) {
+          uv[0] = uv[0] / w;
+        }
+        if (uv[1] !== 0) {
+          uv[1] = uv[1] / h;
+        }
+        return uv;
+      });
+    }
+  }(self));
+  return self._uvcache;
+};
+
+Atlas.prototype.json = function(input) {
+  var self = this;
+  if (input) {
+    if (typeof input === 'string') input = JSON.parse(input);
+    return (function loop(obj) {
+      if (!obj || !obj.rect) return;
+      var atlas = new Atlas(obj.rect.x, obj.rect.y, obj.rect.w, obj.rect.h);
+      if (obj.left) atlas.left = loop(obj.left);
+      if (obj.right) atlas.right = loop(obj.right);
+      return atlas;
+    }(input));
+  } else {
+    return JSON.stringify(function loop(atlas) {
+      var obj = {
+        left: null, right: null,
+        rect: atlas.rect, filled: atlas.filled
+      };
+      if (atlas.left !== null) {
+        obj.left = loop(atlas.left);
+        obj.right = loop(atlas.right);
+      }
+      return obj;
+    }(self), null, 2);
+  }
+};
+
+// Pads the image by tiling itself around itself
+Atlas.prototype._tilepad = function(rect) {
+  var img = this.img;
+  if (!img) return rect;
+
+  var p = img.width / 2;
+
+  var canvas = document.createElement('canvas');
+  canvas.name = img.name || img.src;
+  canvas.id = img.id || '';
+  canvas.width = img.width + img.width;
+  canvas.height = img.height + img.height;
+  var ctx = canvas.getContext('2d');
+
+  var pattern = ctx.createPattern(img, 'repeat');
+  ctx.fillStyle = pattern;
+  ctx.translate(p, p);
+  ctx.fillRect(-p, -p, canvas.width + p, canvas.height + p);
+  ctx.translate(-p, -p);
+
+  this.img = canvas;
+
+  return new Rect(rect.x, rect.y, this.img.width, this.img.height);
+};
+
+// if has an image and canvas, draw to the canvas as we go
+Atlas.prototype._ontoCanvas = function(node) {
+  if (node && this.img && this.canvas) {
+    if (!this.context) {
+      this.context = this.canvas.getContext('2d');
+    }
+    this.context.clearRect(node.rect.x, node.rect.y, node.rect.w, node.rect.h);
+    this.context.drawImage(this.img, node.rect.x, node.rect.y, node.rect.w, node.rect.h);
+    node.rect.name = this.img.id || this.img.name || this.img.src || null;
+  }
+  return node;
+};
+
+// make sure we're always working with rects
+Atlas.prototype._toRect = function(rect) {
+  // if rect is an image
+  if (rect.nodeName && rect.nodeName === 'IMG') {
+    this.img = rect;
+    rect = new Rect(rect.x, rect.y, rect.width, rect.height);
+  }
+  // if rect is an object
+  if (!(rect instanceof Rect)) {
+    rect = new Rect(rect.x || 0, rect.y || 0, rect.w || rect.width, rect.h || rect.height);
+  }
+  return rect;
+};
+
+Atlas.prototype._debug = function() {
+  if (!this.canvas) { return; }
+  var context = this.canvas.getContext('2d');
+  this.index().forEach(function(rect) {
+    context.lineWidth = 1;
+    context.strokeStyle = 'red';
+    context.strokeRect(rect.x, rect.y, rect.w, rect.h);
+  });
+};
+
+},{}]},{},[1])
+(1)
+});;
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],39:[function(require,module,exports){
+(function (process){
+var THREE, temporaryPosition, temporaryVector
+
+module.exports = function(three, opts) {
+  temporaryPosition = new three.Vector3
+  temporaryVector = new three.Vector3
+  
+  return new View(three, opts)
+}
+
+function View(three, opts) {
+  THREE = three // three.js doesn't support multiple instances on a single page
+  this.fov = opts.fov || 60
+  this.width = opts.width || 512
+  this.height = opts.height || 512
+  this.aspectRatio = opts.aspectRatio || this.width/this.height
+  this.nearPlane = opts.nearPlane || 1
+  this.farPlane = opts.farPlane || 10000
+  this.skyColor = opts.skyColor || 0xBFD1E5
+  this.ortho = opts.ortho
+  this.camera = this.ortho?(new THREE.OrthographicCamera(this.width/-2, this.width/2, this.height/2, this.height/-2, this.nearPlane, this.farPlane)):(new THREE.PerspectiveCamera(this.fov, this.aspectRatio, this.nearPlane, this.farPlane))
+  this.camera.lookAt(new THREE.Vector3(0, 0, 0))
+
+  if (!process.browser) return
+
+  this.createRenderer()
+  this.element = this.renderer.domElement
+}
+
+View.prototype.createRenderer = function() {
+  this.renderer = new THREE.WebGLRenderer({
+    antialias: true
+  })
+  this.renderer.setSize(this.width, this.height)
+  this.renderer.setClearColorHex(this.skyColor, 1.0)
+  this.renderer.clear()
+}
+
+View.prototype.bindToScene = function(scene) {
+  scene.add(this.camera)
+}
+
+View.prototype.getCamera = function() {
+  return this.camera
+}
+
+View.prototype.cameraPosition = function() {
+  temporaryPosition.multiplyScalar(0)
+  temporaryPosition.applyMatrix4(this.camera.matrixWorld)
+  return [temporaryPosition.x, temporaryPosition.y, temporaryPosition.z]
+}
+
+View.prototype.cameraVector = function() {
+  temporaryVector.multiplyScalar(0)
+  temporaryVector.z = -1
+  this.camera.matrixWorld.rotateAxis(temporaryVector)
+  return [temporaryVector.x, temporaryVector.y, temporaryVector.z]
+}
+
+View.prototype.resizeWindow = function(width, height) {
+  if (this.element.parentElement) {
+    width = width || this.element.parentElement.clientWidth
+    height = height || this.element.parentElement.clientHeight
+  }
+
+  this.camera.aspect = this.aspectRatio = width/height
+  this.width = width
+  this.height = height
+
+  this.camera.updateProjectionMatrix()
+
+  this.renderer.setSize( width, height )
+}
+
+View.prototype.render = function(scene) {
+  this.renderer.render(scene, this.camera)
+}
+
+View.prototype.appendTo = function(element) {
+  if (typeof element === 'object') {
+    element.appendChild(this.element)
+  }
+  else {
+    document.querySelector(element).appendChild(this.element)
+  }
+
+  this.resizeWindow(this.width,this.height)
+}
+}).call(this,require('_process'))
+},{"_process":74}],40:[function(require,module,exports){
+var events = require('events')
+var inherits = require('inherits')
+
+module.exports = function(opts) {
+  return new Chunker(opts)
+}
+
+module.exports.Chunker = Chunker
+
+function Chunker(opts) {
+  this.distance = opts.chunkDistance || 2
+  this.chunkSize = opts.chunkSize || 32
+  this.cubeSize = opts.cubeSize || 25
+  this.generateVoxelChunk = opts.generateVoxelChunk
+  this.chunks = {}
+  this.meshes = {}
+
+  if (this.chunkSize & this.chunkSize-1 !== 0)
+    throw new Error('chunkSize must be a power of 2')
+  var bits = 0;
+  for (var size = this.chunkSize; size > 0; size >>= 1) bits++;
+  this.chunkBits = bits - 1;
+}
+
+inherits(Chunker, events.EventEmitter)
+
+Chunker.prototype.nearbyChunks = function(position, distance) {
+  var current = this.chunkAtPosition(position)
+  var x = current[0]
+  var y = current[1]
+  var z = current[2]
+  var dist = distance || this.distance
+  var nearby = []
+  for (var cx = (x - dist); cx !== (x + dist); ++cx) {
+    for (var cy = (y - dist); cy !== (y + dist); ++cy) {
+      for (var cz = (z - dist); cz !== (z + dist); ++cz) {
+        nearby.push([cx, cy, cz])
+      }
+    }
+  }
+  return nearby
+}
+
+Chunker.prototype.requestMissingChunks = function(position) {
+  var self = this
+  this.nearbyChunks(position).map(function(chunk) {
+    if (!self.chunks[chunk.join('|')]) {
+      self.emit('missingChunk', chunk)
+    }
+  })
+}
+
+Chunker.prototype.getBounds = function(x, y, z) {
+  var bits = this.chunkBits
+  var low = [x << bits, y << bits, z << bits]
+  var high = [(x+1) << bits, (y+1) << bits, (z+1) << bits]
+  return [low, high]
+}
+
+Chunker.prototype.generateChunk = function(x, y, z) {
+  var self = this
+  var bounds = this.getBounds(x, y, z)
+  var chunk = this.generateVoxelChunk(bounds[0], bounds[1], x, y, z)
+  var position = [x, y, z]
+  chunk.position = position
+  this.chunks[position.join('|')] = chunk
+  return chunk
+}
+
+Chunker.prototype.chunkAtCoordinates = function(x, y, z) {
+  var bits = this.chunkBits;
+  var cx = x >> bits;
+  var cy = y >> bits;
+  var cz = z >> bits;
+  var chunkPos = [cx, cy, cz];
+  return chunkPos;
+}
+
+Chunker.prototype.chunkAtPosition = function(position) {
+  var cubeSize = this.cubeSize;
+  var x = Math.floor(position[0] / cubeSize)
+  var y = Math.floor(position[1] / cubeSize)
+  var z = Math.floor(position[2] / cubeSize)
+  var chunkPos = this.chunkAtCoordinates(x, y, z)
+  return chunkPos
+};
+
+Chunker.prototype.voxelIndexFromCoordinates = function(x, y, z) {
+  var bits = this.chunkBits
+  var mask = (1 << bits) - 1
+  var vidx = (x & mask) + ((y & mask) << bits) + ((z & mask) << bits * 2)
+  return vidx
+}
+
+Chunker.prototype.voxelIndexFromPosition = function(pos) {
+  var v = this.voxelVector(pos)
+  return this.voxelIndex(v)
+}
+
+Chunker.prototype.voxelAtCoordinates = function(x, y, z, val) {
+  var ckey = this.chunkAtCoordinates(x, y, z).join('|')
+  var chunk = this.chunks[ckey]
+  if (!chunk) return false
+  var vidx = this.voxelIndexFromCoordinates(x, y, z)
+  var v = chunk.voxels[vidx]
+  if (typeof val !== 'undefined') {
+    chunk.voxels[vidx] = val
+  }
+  return v
+}
+
+Chunker.prototype.voxelAtPosition = function(pos, val) {
+  var cubeSize = this.cubeSize;
+  var x = Math.floor(pos[0] / cubeSize)
+  var y = Math.floor(pos[1] / cubeSize)
+  var z = Math.floor(pos[2] / cubeSize)
+  var v = this.voxelAtCoordinates(x, y, z, val)
+  return v;
+}
+
+// deprecated
+Chunker.prototype.voxelIndex = function(voxelVector) {
+  var vidx = this.voxelIndexFromCoordinates(voxelVector[0], voxelVector[1], voxelVector[2])
+  return vidx
+}
+
+// deprecated
+Chunker.prototype.voxelVector = function(pos) {
+  var cubeSize = this.cubeSize
+  var mask = (1 << this.chunkBits) - 1
+  var vx = (Math.floor(pos[0] / cubeSize)) & mask
+  var vy = (Math.floor(pos[1] / cubeSize)) & mask
+  var vz = (Math.floor(pos[2] / cubeSize)) & mask
+  return [vx, vy, vz]
+};
+
+},{"events":70,"inherits":9}],41:[function(require,module,exports){
+var chunker = require('./chunker')
+
+module.exports = function(opts) {
+  if (!opts.generateVoxelChunk) opts.generateVoxelChunk = function(low, high) {
+    return generate(low, high, module.exports.generator['Valley'])
+  }
+  return chunker(opts)
+}
+
+module.exports.meshers = {
+  culled: require('./meshers/culled').mesher,
+  greedy: require('./meshers/greedy').mesher,
+  monotone: require('./meshers/monotone').mesher,
+  stupid: require('./meshers/stupid').mesher
+}
+
+module.exports.Chunker = chunker.Chunker
+module.exports.geometry = {}
+module.exports.generator = {}
+module.exports.generate = generate
+
+// from https://github.com/mikolalysenko/mikolalysenko.github.com/blob/master/MinecraftMeshes2/js/testdata.js#L4
+function generate(l, h, f, game) {
+  var d = [ h[0]-l[0], h[1]-l[1], h[2]-l[2] ]
+  var v = new Int8Array(d[0]*d[1]*d[2])
+  var n = 0
+  for(var k=l[2]; k<h[2]; ++k)
+  for(var j=l[1]; j<h[1]; ++j)
+  for(var i=l[0]; i<h[0]; ++i, ++n) {
+    v[n] = f(i,j,k,n,game)
+  }
+  return {voxels:v, dims:d}
+}
+
+// shape and terrain generator functions
+module.exports.generator['Sphere'] = function(i,j,k) {
+  return i*i+j*j+k*k <= 16*16 ? 1 : 0
+}
+
+module.exports.generator['Noise'] = function(i,j,k) {
+  return Math.random() < 0.1 ? Math.random() * 0xffffff : 0;
+}
+
+module.exports.generator['Dense Noise'] = function(i,j,k) {
+  return Math.round(Math.random() * 0xffffff);
+}
+
+module.exports.generator['Checker'] = function(i,j,k) {
+  return !!((i+j+k)&1) ? (((i^j^k)&2) ? 1 : 0xffffff) : 0;
+}
+
+module.exports.generator['Hill'] = function(i,j,k) {
+  return j <= 16 * Math.exp(-(i*i + k*k) / 64) ? 1 : 0;
+}
+
+module.exports.generator['Valley'] = function(i,j,k) {
+  return j <= (i*i + k*k) * 31 / (32*32*2) + 1 ? 1 : 0;
+}
+
+module.exports.generator['Hilly Terrain'] = function(i,j,k) {
+  var h0 = 3.0 * Math.sin(Math.PI * i / 12.0 - Math.PI * k * 0.1) + 27;    
+  if(j > h0+1) {
+    return 0;
+  }
+  if(h0 <= j) {
+    return 1;
+  }
+  var h1 = 2.0 * Math.sin(Math.PI * i * 0.25 - Math.PI * k * 0.3) + 20;
+  if(h1 <= j) {
+    return 2;
+  }
+  if(2 < j) {
+    return Math.random() < 0.1 ? 0x222222 : 0xaaaaaa;
+  }
+  return 3;
+}
+
+module.exports.scale = function ( x, fromLow, fromHigh, toLow, toHigh ) {
+  return ( x - fromLow ) * ( toHigh - toLow ) / ( fromHigh - fromLow ) + toLow
+}
+
+// convenience function that uses the above functions to prebake some simple voxel geometries
+module.exports.generateExamples = function() {
+  return {
+    'Sphere': generate([-16,-16,-16], [16,16,16], module.exports.generator['Sphere']),
+    'Noise': generate([0,0,0], [16,16,16], module.exports.generator['Noise']),
+    'Dense Noise': generate([0,0,0], [16,16,16], module.exports.generator['Dense Noise']),
+    'Checker': generate([0,0,0], [8,8,8], module.exports.generator['Checker']),
+    'Hill': generate([-16, 0, -16], [16,16,16], module.exports.generator['Hill']),
+    'Valley': generate([0,0,0], [32,32,32], module.exports.generator['Valley']),
+    'Hilly Terrain': generate([0, 0, 0], [32,32,32], module.exports.generator['Hilly Terrain'])
+  }
+}
+
+
+},{"./chunker":40,"./meshers/culled":42,"./meshers/greedy":43,"./meshers/monotone":44,"./meshers/stupid":45}],42:[function(require,module,exports){
+//Naive meshing (with face culling)
+function CulledMesh(volume, dims) {
+  //Precalculate direction vectors for convenience
+  var dir = new Array(3);
+  for(var i=0; i<3; ++i) {
+    dir[i] = [[0,0,0], [0,0,0]];
+    dir[i][0][(i+1)%3] = 1;
+    dir[i][1][(i+2)%3] = 1;
+  }
+  //March over the volume
+  var vertices = []
+    , faces = []
+    , x = [0,0,0]
+    , B = [[false,true]    //Incrementally update bounds (this is a bit ugly)
+          ,[false,true]
+          ,[false,true]]
+    , n = -dims[0]*dims[1];
+  for(           B[2]=[false,true],x[2]=-1; x[2]<dims[2]; B[2]=[true,(++x[2]<dims[2]-1)])
+  for(n-=dims[0],B[1]=[false,true],x[1]=-1; x[1]<dims[1]; B[1]=[true,(++x[1]<dims[1]-1)])
+  for(n-=1,      B[0]=[false,true],x[0]=-1; x[0]<dims[0]; B[0]=[true,(++x[0]<dims[0]-1)], ++n) {
+    //Read current voxel and 3 neighboring voxels using bounds check results
+    var p =   (B[0][0] && B[1][0] && B[2][0]) ? volume[n]                 : 0
+      , b = [ (B[0][1] && B[1][0] && B[2][0]) ? volume[n+1]               : 0
+            , (B[0][0] && B[1][1] && B[2][0]) ? volume[n+dims[0]]         : 0
+            , (B[0][0] && B[1][0] && B[2][1]) ? volume[n+dims[0]*dims[1]] : 0
+          ];
+    //Generate faces
+    for(var d=0; d<3; ++d)
+    if((!!p) !== (!!b[d])) {
+      var s = !p ? 1 : 0;
+      var t = [x[0],x[1],x[2]]
+        , u = dir[d][s]
+        , v = dir[d][s^1];
+      ++t[d];
+      
+      var vertex_count = vertices.length;
+      vertices.push([t[0],           t[1],           t[2]          ]);
+      vertices.push([t[0]+u[0],      t[1]+u[1],      t[2]+u[2]     ]);
+      vertices.push([t[0]+u[0]+v[0], t[1]+u[1]+v[1], t[2]+u[2]+v[2]]);
+      vertices.push([t[0]     +v[0], t[1]     +v[1], t[2]     +v[2]]);
+      faces.push([vertex_count, vertex_count+1, vertex_count+2, vertex_count+3, s ? b[d] : p]);
+    }
+  }
+  return { vertices:vertices, faces:faces };
+}
+
+
+if(exports) {
+  exports.mesher = CulledMesh;
+}
+
+},{}],43:[function(require,module,exports){
+var GreedyMesh = (function() {
+//Cache buffer internally
+var mask = new Int32Array(4096);
+
+return function(volume, dims) {
+  var vertices = [], faces = []
+    , dimsX = dims[0]
+    , dimsY = dims[1]
+    , dimsXY = dimsX * dimsY;
+
+  //Sweep over 3-axes
+  for(var d=0; d<3; ++d) {
+    var i, j, k, l, w, W, h, n, c
+      , u = (d+1)%3
+      , v = (d+2)%3
+      , x = [0,0,0]
+      , q = [0,0,0]
+      , du = [0,0,0]
+      , dv = [0,0,0]
+      , dimsD = dims[d]
+      , dimsU = dims[u]
+      , dimsV = dims[v]
+      , qdimsX, qdimsXY
+      , xd
+
+    if (mask.length < dimsU * dimsV) {
+      mask = new Int32Array(dimsU * dimsV);
+    }
+
+    q[d] =  1;
+    x[d] = -1;
+
+    qdimsX  = dimsX  * q[1]
+    qdimsXY = dimsXY * q[2]
+
+    // Compute mask
+    while (x[d] < dimsD) {
+      xd = x[d]
+      n = 0;
+
+      for(x[v] = 0; x[v] < dimsV; ++x[v]) {
+        for(x[u] = 0; x[u] < dimsU; ++x[u], ++n) {
+          var a = xd >= 0      && volume[x[0]      + dimsX * x[1]          + dimsXY * x[2]          ]
+            , b = xd < dimsD-1 && volume[x[0]+q[0] + dimsX * x[1] + qdimsX + dimsXY * x[2] + qdimsXY]
+          if (a ? b : !b) {
+            mask[n] = 0; continue;
+          }
+          mask[n] = a ? a : -b;
+        }
+      }
+
+      ++x[d];
+
+      // Generate mesh for mask using lexicographic ordering
+      n = 0;
+      for (j=0; j < dimsV; ++j) {
+        for (i=0; i < dimsU; ) {
+          c = mask[n];
+          if (!c) {
+            i++;  n++; continue;
+          }
+
+          //Compute width
+          w = 1;
+          while (c === mask[n+w] && i+w < dimsU) w++;
+
+          //Compute height (this is slightly awkward)
+          for (h=1; j+h < dimsV; ++h) {
+            k = 0;
+            while (k < w && c === mask[n+k+h*dimsU]) k++
+            if (k < w) break;
+          }
+
+          // Add quad
+          // The du/dv arrays are reused/reset
+          // for each iteration.
+          du[d] = 0; dv[d] = 0;
+          x[u]  = i;  x[v] = j;
+
+          if (c > 0) {
+            dv[v] = h; dv[u] = 0;
+            du[u] = w; du[v] = 0;
+          } else {
+            c = -c;
+            du[v] = h; du[u] = 0;
+            dv[u] = w; dv[v] = 0;
+          }
+          var vertex_count = vertices.length;
+          vertices.push([x[0],             x[1],             x[2]            ]);
+          vertices.push([x[0]+du[0],       x[1]+du[1],       x[2]+du[2]      ]);
+          vertices.push([x[0]+du[0]+dv[0], x[1]+du[1]+dv[1], x[2]+du[2]+dv[2]]);
+          vertices.push([x[0]      +dv[0], x[1]      +dv[1], x[2]      +dv[2]]);
+          faces.push([vertex_count, vertex_count+1, vertex_count+2, vertex_count+3, c]);
+
+          //Zero-out mask
+          W = n + w;
+          for(l=0; l<h; ++l) {
+            for(k=n; k<W; ++k) {
+              mask[k+l*dimsU] = 0;
+            }
+          }
+
+          //Increment counters and continue
+          i += w; n += w;
+        }
+      }
+    }
+  }
+  return { vertices:vertices, faces:faces };
+}
+})();
+
+if(exports) {
+  exports.mesher = GreedyMesh;
+}
+
+},{}],44:[function(require,module,exports){
+"use strict";
+
+var MonotoneMesh = (function(){
+
+function MonotonePolygon(c, v, ul, ur) {
+  this.color  = c;
+  this.left   = [[ul, v]];
+  this.right  = [[ur, v]];
+};
+
+MonotonePolygon.prototype.close_off = function(v) {
+  this.left.push([ this.left[this.left.length-1][0], v ]);
+  this.right.push([ this.right[this.right.length-1][0], v ]);
+};
+
+MonotonePolygon.prototype.merge_run = function(v, u_l, u_r) {
+  var l = this.left[this.left.length-1][0]
+    , r = this.right[this.right.length-1][0]; 
+  if(l !== u_l) {
+    this.left.push([ l, v ]);
+    this.left.push([ u_l, v ]);
+  }
+  if(r !== u_r) {
+    this.right.push([ r, v ]);
+    this.right.push([ u_r, v ]);
+  }
+};
+
+
+return function(volume, dims) {
+  function f(i,j,k) {
+    return volume[i + dims[0] * (j + dims[1] * k)];
+  }
+  //Sweep over 3-axes
+  var vertices = [], faces = [];
+  for(var d=0; d<3; ++d) {
+    var i, j, k
+      , u = (d+1)%3   //u and v are orthogonal directions to d
+      , v = (d+2)%3
+      , x = new Int32Array(3)
+      , q = new Int32Array(3)
+      , runs = new Int32Array(2 * (dims[u]+1))
+      , frontier = new Int32Array(dims[u])  //Frontier is list of pointers to polygons
+      , next_frontier = new Int32Array(dims[u])
+      , left_index = new Int32Array(2 * dims[v])
+      , right_index = new Int32Array(2 * dims[v])
+      , stack = new Int32Array(24 * dims[v])
+      , delta = [[0,0], [0,0]];
+    //q points along d-direction
+    q[d] = 1;
+    //Initialize sentinel
+    for(x[d]=-1; x[d]<dims[d]; ) {
+      // --- Perform monotone polygon subdivision ---
+      var n = 0
+        , polygons = []
+        , nf = 0;
+      for(x[v]=0; x[v]<dims[v]; ++x[v]) {
+        //Make one pass over the u-scan line of the volume to run-length encode polygon
+        var nr = 0, p = 0, c = 0;
+        for(x[u]=0; x[u]<dims[u]; ++x[u], p = c) {
+          //Compute the type for this face
+          var a = (0    <= x[d]      ? f(x[0],      x[1],      x[2])      : 0)
+            , b = (x[d] <  dims[d]-1 ? f(x[0]+q[0], x[1]+q[1], x[2]+q[2]) : 0);
+          c = a;
+          if((!a) === (!b)) {
+            c = 0;
+          } else if(!a) {
+            c = -b;
+          }
+          //If cell type doesn't match, start a new run
+          if(p !== c) {
+            runs[nr++] = x[u];
+            runs[nr++] = c;
+          }
+        }
+        //Add sentinel run
+        runs[nr++] = dims[u];
+        runs[nr++] = 0;
+        //Update frontier by merging runs
+        var fp = 0;
+        for(var i=0, j=0; i<nf && j<nr-2; ) {
+          var p    = polygons[frontier[i]]
+            , p_l  = p.left[p.left.length-1][0]
+            , p_r  = p.right[p.right.length-1][0]
+            , p_c  = p.color
+            , r_l  = runs[j]    //Start of run
+            , r_r  = runs[j+2]  //End of run
+            , r_c  = runs[j+1]; //Color of run
+          //Check if we can merge run with polygon
+          if(r_r > p_l && p_r > r_l && r_c === p_c) {
+            //Merge run
+            p.merge_run(x[v], r_l, r_r);
+            //Insert polygon into frontier
+            next_frontier[fp++] = frontier[i];
+            ++i;
+            j += 2;
+          } else {
+            //Check if we need to advance the run pointer
+            if(r_r <= p_r) {
+              if(!!r_c) {
+                var n_poly = new MonotonePolygon(r_c, x[v], r_l, r_r);
+                next_frontier[fp++] = polygons.length;
+                polygons.push(n_poly);
+              }
+              j += 2;
+            }
+            //Check if we need to advance the frontier pointer
+            if(p_r <= r_r) {
+              p.close_off(x[v]);
+              ++i;
+            }
+          }
+        }
+        //Close off any residual polygons
+        for(; i<nf; ++i) {
+          polygons[frontier[i]].close_off(x[v]);
+        }
+        //Add any extra runs to frontier
+        for(; j<nr-2; j+=2) {
+          var r_l  = runs[j]
+            , r_r  = runs[j+2]
+            , r_c  = runs[j+1];
+          if(!!r_c) {
+            var n_poly = new MonotonePolygon(r_c, x[v], r_l, r_r);
+            next_frontier[fp++] = polygons.length;
+            polygons.push(n_poly);
+          }
+        }
+        //Swap frontiers
+        var tmp = next_frontier;
+        next_frontier = frontier;
+        frontier = tmp;
+        nf = fp;
+      }
+      //Close off frontier
+      for(var i=0; i<nf; ++i) {
+        var p = polygons[frontier[i]];
+        p.close_off(dims[v]);
+      }
+      // --- Monotone subdivision of polygon is complete at this point ---
+      
+      x[d]++;
+      
+      //Now we just need to triangulate each monotone polygon
+      for(var i=0; i<polygons.length; ++i) {
+        var p = polygons[i]
+          , c = p.color
+          , flipped = false;
+        if(c < 0) {
+          flipped = true;
+          c = -c;
+        }
+        for(var j=0; j<p.left.length; ++j) {
+          left_index[j] = vertices.length;
+          var y = [0.0,0.0,0.0]
+            , z = p.left[j];
+          y[d] = x[d];
+          y[u] = z[0];
+          y[v] = z[1];
+          vertices.push(y);
+        }
+        for(var j=0; j<p.right.length; ++j) {
+          right_index[j] = vertices.length;
+          var y = [0.0,0.0,0.0]
+            , z = p.right[j];
+          y[d] = x[d];
+          y[u] = z[0];
+          y[v] = z[1];
+          vertices.push(y);
+        }
+        //Triangulate the monotone polygon
+        var bottom = 0
+          , top = 0
+          , l_i = 1
+          , r_i = 1
+          , side = true;  //true = right, false = left
+        
+        stack[top++] = left_index[0];
+        stack[top++] = p.left[0][0];
+        stack[top++] = p.left[0][1];
+        
+        stack[top++] = right_index[0];
+        stack[top++] = p.right[0][0];
+        stack[top++] = p.right[0][1];
+        
+        while(l_i < p.left.length || r_i < p.right.length) {
+          //Compute next side
+          var n_side = false;
+          if(l_i === p.left.length) {
+            n_side = true;
+          } else if(r_i !== p.right.length) {
+            var l = p.left[l_i]
+              , r = p.right[r_i];
+            n_side = l[1] > r[1];
+          }
+          var idx = n_side ? right_index[r_i] : left_index[l_i]
+            , vert = n_side ? p.right[r_i] : p.left[l_i];
+          if(n_side !== side) {
+            //Opposite side
+            while(bottom+3 < top) {
+              if(flipped === n_side) {
+                faces.push([ stack[bottom], stack[bottom+3], idx, c]);
+              } else {
+                faces.push([ stack[bottom+3], stack[bottom], idx, c]);              
+              }
+              bottom += 3;
+            }
+          } else {
+            //Same side
+            while(bottom+3 < top) {
+              //Compute convexity
+              for(var j=0; j<2; ++j)
+              for(var k=0; k<2; ++k) {
+                delta[j][k] = stack[top-3*(j+1)+k+1] - vert[k];
+              }
+              var det = delta[0][0] * delta[1][1] - delta[1][0] * delta[0][1];
+              if(n_side === (det > 0)) {
+                break;
+              }
+              if(det !== 0) {
+                if(flipped === n_side) {
+                  faces.push([ stack[top-3], stack[top-6], idx, c ]);
+                } else {
+                  faces.push([ stack[top-6], stack[top-3], idx, c ]);
+                }
+              }
+              top -= 3;
+            }
+          }
+          //Push vertex
+          stack[top++] = idx;
+          stack[top++] = vert[0];
+          stack[top++] = vert[1];
+          //Update loop index
+          if(n_side) {
+            ++r_i;
+          } else {
+            ++l_i;
+          }
+          side = n_side;
+        }
+      }
+    }
+  }
+  return { vertices:vertices, faces:faces };
+}
+})();
+
+if(exports) {
+  exports.mesher = MonotoneMesh;
+}
+
+},{}],45:[function(require,module,exports){
+//The stupidest possible way to generate a Minecraft mesh (I think)
+function StupidMesh(volume, dims) {
+  var vertices = [], faces = [], x = [0,0,0], n = 0;
+  for(x[2]=0; x[2]<dims[2]; ++x[2])
+  for(x[1]=0; x[1]<dims[1]; ++x[1])
+  for(x[0]=0; x[0]<dims[0]; ++x[0], ++n)
+  if(!!volume[n]) {
+    for(var d=0; d<3; ++d) {
+      var t = [x[0], x[1], x[2]]
+        , u = [0,0,0]
+        , v = [0,0,0];
+      u[(d+1)%3] = 1;
+      v[(d+2)%3] = 1;
+      for(var s=0; s<2; ++s) {
+        t[d] = x[d] + s;
+        var tmp = u;
+        u = v;
+        v = tmp;
+        var vertex_count = vertices.length;
+        vertices.push([t[0],           t[1],           t[2]          ]);
+        vertices.push([t[0]+u[0],      t[1]+u[1],      t[2]+u[2]     ]);
+        vertices.push([t[0]+u[0]+v[0], t[1]+u[1]+v[1], t[2]+u[2]+v[2]]);
+        vertices.push([t[0]     +v[0], t[1]     +v[1], t[2]     +v[2]]);
+        faces.push([vertex_count, vertex_count+1, vertex_count+2, vertex_count+3, volume[n]]);
+      }
+    }
+  }
+  return { vertices:vertices, faces:faces };
+}
+
+
+if(exports) {
+  exports.mesher = StupidMesh;
+}
+
+},{}],46:[function(require,module,exports){
+var ever = require('ever')
+var vkey = require('vkey')
+var events = require('events')
+
+var game
+
+module.exports = function(gameInstance) {
+  // cache the game instance
+  game = gameInstance
+  return function makeFly(physical, noKeyEvents) {
+    return new Fly(physical, noKeyEvents)
+  }
+}
+
+function Fly(physical, noKeyEvents) {
+  this.flySpeed = 0.8
+  this.physical = physical
+  if (!noKeyEvents) this.bindKeyEvents()
+}
+
+Fly.prototype.bindKeyEvents = function(el) {
+  if (!el) el = document.body
+  var self = this
+  var counter = 0
+  var spaceUpAfterFirstDown = false
+  var first = Date.now()
+  ever(el)
+    .on('keydown', onKeyDown)
+    .on('keyup', onKeyUp)
+  
+  function onKeyDown(ev) {
+    var key = vkey[ev.keyCode] || ev.char
+    var binding = game.keybindings[key]
+    if (binding !== "jump") return
+    if (counter === 1) {
+      if (Date.now() - first > 300) {
+        spaceUpAfterFirstDown = false
+        return first = Date.now()
+      } else {
+        if (!self.flying && spaceUpAfterFirstDown) {
+          self.startFlying()
+        }
+      }
+      spaceUpAfterFirstDown = false
+      return counter = 0
+    }
+    if (counter === 0) {
+      first = Date.now()
+      counter += 1
+    }
+  }
+  
+  function onKeyUp(ev) {
+    var key = vkey[ev.keyCode] || ev.char
+    if (key === '<space>' && counter === 1) {
+      spaceUpAfterFirstDown = true
+    }
+  }
+}
+
+Fly.prototype.startFlying = function() {
+  var self = this
+  this.flying = true
+  var physical = this.physical
+  physical.removeForce(game.gravity)
+  physical.onGameTick = function(dt) {
+    if (physical.atRestY() === -1) return self.stopFlying()
+    physical.friction.x = self.flySpeed
+    physical.friction.z = self.flySpeed
+    var press = game.controls.state
+    if (press['crouch']) return physical.velocity.y = -0.01
+    if (press['jump']) return physical.velocity.y = 0.01
+    physical.velocity.y = 0
+  }
+  game.on('tick', physical.onGameTick)
+}
+
+Fly.prototype.stopFlying = function() {
+  this.flying = false
+  var physical = this.physical
+  physical.subjectTo(game.gravity)
+  game.removeListener('tick', physical.onGameTick)
+}
+},{"events":70,"ever":47,"vkey":50}],47:[function(require,module,exports){
+arguments[4][20][0].apply(exports,arguments)
+},{"./init.json":48,"./types.json":49,"dup":20,"events":70}],48:[function(require,module,exports){
+arguments[4][21][0].apply(exports,arguments)
+},{"dup":21}],49:[function(require,module,exports){
+arguments[4][22][0].apply(exports,arguments)
+},{"dup":22}],50:[function(require,module,exports){
+var ua = typeof window !== 'undefined' ? window.navigator.userAgent : ''
+  , isOSX = /OS X/.test(ua)
+  , isOpera = /Opera/.test(ua)
+  , maybeFirefox = !/like Gecko/.test(ua) && !isOpera
+
+var i, output = module.exports = {
+  0:  isOSX ? '<menu>' : '<UNK>'
+, 1:  '<mouse 1>'
+, 2:  '<mouse 2>'
+, 3:  '<break>'
+, 4:  '<mouse 3>'
+, 5:  '<mouse 4>'
+, 6:  '<mouse 5>'
+, 8:  '<backspace>'
+, 9:  '<tab>'
+, 12: '<clear>'
+, 13: '<enter>'
+, 16: '<shift>'
+, 17: '<control>'
+, 18: '<alt>'
+, 19: '<pause>'
+, 20: '<caps-lock>'
+, 21: '<ime-hangul>'
+, 23: '<ime-junja>'
+, 24: '<ime-final>'
+, 25: '<ime-kanji>'
+, 27: '<escape>'
+, 28: '<ime-convert>'
+, 29: '<ime-nonconvert>'
+, 30: '<ime-accept>'
+, 31: '<ime-mode-change>'
+, 27: '<escape>'
+, 32: '<space>'
+, 33: '<page-up>'
+, 34: '<page-down>'
+, 35: '<end>'
+, 36: '<home>'
+, 37: '<left>'
+, 38: '<up>'
+, 39: '<right>'
+, 40: '<down>'
+, 41: '<select>'
+, 42: '<print>'
+, 43: '<execute>'
+, 44: '<snapshot>'
+, 45: '<insert>'
+, 46: '<delete>'
+, 47: '<help>'
+, 91: '<meta>'  // meta-left -- no one handles left and right properly, so we coerce into one.
+, 92: '<meta>'  // meta-right
+, 93: isOSX ? '<meta>' : '<menu>'      // chrome,opera,safari all report this for meta-right (osx mbp).
+, 95: '<sleep>'
+, 106: '<num-*>'
+, 107: '<num-+>'
+, 108: '<num-enter>'
+, 109: '<num-->'
+, 110: '<num-.>'
+, 111: '<num-/>'
+, 144: '<num-lock>'
+, 145: '<scroll-lock>'
+, 160: '<shift-left>'
+, 161: '<shift-right>'
+, 162: '<control-left>'
+, 163: '<control-right>'
+, 164: '<alt-left>'
+, 165: '<alt-right>'
+, 166: '<browser-back>'
+, 167: '<browser-forward>'
+, 168: '<browser-refresh>'
+, 169: '<browser-stop>'
+, 170: '<browser-search>'
+, 171: '<browser-favorites>'
+, 172: '<browser-home>'
+
+  // ff/osx reports '<volume-mute>' for '-'
+, 173: isOSX && maybeFirefox ? '-' : '<volume-mute>'
+, 174: '<volume-down>'
+, 175: '<volume-up>'
+, 176: '<next-track>'
+, 177: '<prev-track>'
+, 178: '<stop>'
+, 179: '<play-pause>'
+, 180: '<launch-mail>'
+, 181: '<launch-media-select>'
+, 182: '<launch-app 1>'
+, 183: '<launch-app 2>'
+, 186: ';'
+, 187: '='
+, 188: ','
+, 189: '-'
+, 190: '.'
+, 191: '/'
+, 192: '`'
+, 219: '['
+, 220: '\\'
+, 221: ']'
+, 222: "'"
+, 223: '<meta>'
+, 224: '<meta>'       // firefox reports meta here.
+, 226: '<alt-gr>'
+, 229: '<ime-process>'
+, 231: isOpera ? '`' : '<unicode>'
+, 246: '<attention>'
+, 247: '<crsel>'
+, 248: '<exsel>'
+, 249: '<erase-eof>'
+, 250: '<play>'
+, 251: '<zoom>'
+, 252: '<no-name>'
+, 253: '<pa-1>'
+, 254: '<clear>'
+}
+
+for(i = 58; i < 65; ++i) {
+  output[i] = String.fromCharCode(i)
+}
+
+// 0-9
+for(i = 48; i < 58; ++i) {
+  output[i] = (i - 48)+''
+}
+
+// A-Z
+for(i = 65; i < 91; ++i) {
+  output[i] = String.fromCharCode(i)
+}
+
+// num0-9
+for(i = 96; i < 107; ++i) {
+  output[i] = '<num-'+(i - 96)+'>'
+}
+
+// F1-F24
+for(i = 112; i < 136; ++i) {
+  output[i] = 'F'+(i-111)
+}
+
+},{}],51:[function(require,module,exports){
+var inherits = require('inherits')
+var events = require('events')
+var _ = require('underscore')
+
+module.exports = Highlighter
+
+function Highlighter(game, opts) {
+  if (!(this instanceof Highlighter)) return new Highlighter(game, opts)
+  this.game = game
+  opts = opts || {}
+  this.enabled = opts.enabled || function () { return true }
+  var geometry = this.geometry = opts.geometry || new game.THREE.CubeGeometry(1, 1, 1)
+  var material = opts.material || new game.THREE.MeshBasicMaterial({
+    color: opts.color || 0x000000,
+    wireframe: true,
+    wireframeLinewidth: opts.wireframeLinewidth || 3,
+    transparent: true,
+    opacity: opts.wireframeOpacity || 0.5
+  })
+  this.mesh = new game.THREE.Mesh(geometry, material)
+  this.distance = opts.distance || 10
+  this.currVoxelPos // undefined when no voxel selected for highlight
+  this.currVoxelAdj // undefined when no adjacent voxel selected for highlight
+  this.targetPosition // desired position of highlight cube center
+  
+  // the adjacent highlight will be active when the following returns true
+  this.adjacentActive = opts.adjacentActive || function () { return game.controls.state.alt }
+  
+  // the selection highlight will be active when the following returns true
+  this.selectActive = opts.selectActive || function () { return game.controls.state.select }
+  
+  // animate highlight transitions?
+  this.animate = opts.animate
+  this.animateFunction = opts.animateFunction || function (position, targetPosition, deltaTime) {
+    if (!position || !targetPosition || !deltaTime) return;
+    var rate = 10
+    if (Math.abs(targetPosition[0] - position[0]) < 0.05
+     && Math.abs(targetPosition[1] - position[1]) < 0.05
+     && Math.abs(targetPosition[2] - position[2]) < 0.05) {
+      return targetPosition // close enough to snap and be done
+    }
+    deltaTime = deltaTime / 1000 // usually around .016 seconds (60 FPS)
+    position[0] += rate * deltaTime * (targetPosition[0] - position[0])
+    position[1] += rate * deltaTime * (targetPosition[1] - position[1])
+    position[2] += rate * deltaTime * (targetPosition[2] - position[2])
+    return position
+  }
+
+  // highlight 'easing' animation, called every tick if enabled
+  var self = this
+  if (this.animate) game.on('tick', function (dt) {
+    var position = [self.mesh.position.x, self.mesh.position.y, self.mesh.position.z]
+    position = self.animateFunction(position, self.targetPosition, dt)
+    if (position) self.mesh.position.set(position[0], position[1], position[2])
+  })
+
+  game.on('tick', _.throttle(this.highlight.bind(this), opts.frequency || 100))
+  
+  // anchors for multi-voxel selection
+  this.selectStart
+  this.selectEnd
+}
+
+inherits(Highlighter, events.EventEmitter)
+
+Highlighter.prototype.highlight = function () {
+
+  if (!this.enabled()) {
+    if (this.mesh.parent !== null) {
+      this.game.scene.remove(this.mesh)
+    }
+    return;
+  }
+
+  var cp = this.game.cameraPosition()
+  var cv = this.game.cameraVector()
+  var hit = this.game.raycastVoxels(cp, cv, this.distance)
+  var targetPositionCandidate
+
+  var removeAdjacent = function (self) { // remove adjacent highlight if any
+    if (!self.currVoxelAdj) return;
+    self.emit('remove-adjacent', self.currVoxelAdj)
+    self.currVoxelAdj = undefined
+  }
+
+  // remove existing highlight if any
+  if (!hit) {
+    if (!this.currVoxelPos) return; // already removed
+    this.game.scene.remove(this.mesh)
+    this.emit('remove', this.currVoxelPos.slice())
+    this.currVoxelPos = undefined
+    removeAdjacent(this)
+    return;
+  }
+
+  var newVoxelPos = hit.voxel
+  if (!this.currVoxelPos
+    || newVoxelPos[0] !== this.currVoxelPos[0]
+    || newVoxelPos[1] !== this.currVoxelPos[1]
+    || newVoxelPos[2] !== this.currVoxelPos[2]) { // no current highlight or it moved
+
+    if (this.currVoxelPos) {
+      this.emit('remove', this.currVoxelPos.slice()) // moved highlight
+    }
+    else {
+      this.game.scene.add(this.mesh) // fresh highlight
+    }
+    this.emit('highlight', newVoxelPos.slice())
+    this.currVoxelPos = newVoxelPos.slice()
+  }
+  // try to set the position every time, it may be overridden below
+  targetPositionCandidate = [this.currVoxelPos[0] + 0.5, this.currVoxelPos[1] + 0.5, this.currVoxelPos[2] + 0.5]
+
+  // if in "adjacent" mode, highlight adjacent voxel instead
+  if (this.adjacentActive()) {
+    // since we got here, we know we have a selected non-empty voxel
+    // and with an empty adjacent voxel that we can work with
+    var newVoxelAdj = hit.adjacent
+    if (!this.currVoxelAdj
+      || newVoxelAdj[0] !== this.currVoxelAdj[0]
+      || newVoxelAdj[1] !== this.currVoxelAdj[1]
+      || newVoxelAdj[2] !== this.currVoxelAdj[2]) { // no current adj highlight or it has moved
+  
+      if (this.currVoxelAdj) {
+        this.emit('remove-adjacent', this.currVoxelAdj.slice()) // moved adjacent highlight
+      }
+      this.emit('highlight-adjacent', newVoxelAdj.slice())
+      
+      this.currVoxelAdj = newVoxelAdj.slice()
+    }
+    targetPositionCandidate = [this.currVoxelAdj[0] + 0.5, this.currVoxelAdj[1] + 0.5, this.currVoxelAdj[2] + 0.5]
+  }
+  else removeAdjacent(this)
+
+  // if in "select" mode, track start and end voxel bounds
+  if (this.selectActive()) {
+    if (!this.selectStart) { // start a new selection
+      this.selectStart = this.selectEnd = this.currVoxelAdj || this.currVoxelPos
+    }
+    else {
+      var endCandidate = this.currVoxelAdj || this.currVoxelPos
+      if (endCandidate[0] !== this.selectEnd[0]
+       || endCandidate[1] !== this.selectEnd[1]
+       || endCandidate[2] !== this.selectEnd[2]) { 
+         
+        this.selectEnd = endCandidate // selection end has changed
+        
+        this.emit('highlight-select', { start: this.selectStart.slice(), end: this.selectEnd.slice() })
+        
+        var scale = []
+        scale[0] = Math.abs(this.selectEnd[0] - this.selectStart[0]) + 1
+        scale[1] = Math.abs(this.selectEnd[1] - this.selectStart[1]) + 1
+        scale[2] = Math.abs(this.selectEnd[2] - this.selectStart[2]) + 1
+        this.mesh.scale.set(scale[0], scale[1], scale[2])
+        
+        var pos = []
+        pos[0] = this.selectStart[0] + 0.5 + (this.selectEnd[0] - this.selectStart[0]) / 2
+        pos[1] = this.selectStart[1] + 0.5 + (this.selectEnd[1] - this.selectStart[1]) / 2
+        pos[2] = this.selectStart[2] + 0.5 + (this.selectEnd[2] - this.selectStart[2]) / 2
+        this.targetPosition = pos
+      }
+    }
+  }
+  else {
+    if (this.selectStart) {
+      this.emit('highlight-deselect', { start: this.selectStart.slice(), end: this.selectEnd.slice() })
+      this.selectStart = null
+      this.mesh.scale.set(1, 1, 1)
+    }
+    this.targetPosition = targetPositionCandidate // highlighted voxel or adjacent
+  }
+  if (!this.animate) this.mesh.position.set(this.targetPosition[0], this.targetPosition[1], this.targetPosition[2])
+}
+
+},{"events":70,"inherits":52,"underscore":53}],52:[function(require,module,exports){
+arguments[4][9][0].apply(exports,arguments)
+},{"dup":9}],53:[function(require,module,exports){
+//     Underscore.js 1.4.4
+//     http://underscorejs.org
+//     (c) 2009-2013 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore may be freely distributed under the MIT license.
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var push             = ArrayProto.push,
+      slice            = ArrayProto.slice,
+      concat           = ArrayProto.concat,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) {
+    if (obj instanceof _) return obj;
+    if (!(this instanceof _)) return new _(obj);
+    this._wrapped = obj;
+  };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.4.4';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (_.has(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
+        }
+      }
+    }
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = _.collect = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results[results.length] = iterator.call(context, value, index, list);
+    });
+    return results;
+  };
+
+  var reduceError = 'Reduce of empty array with no initial value';
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var length = obj.length;
+    if (length !== +length) {
+      var keys = _.keys(obj);
+      length = keys.length;
+    }
+    each(obj, function(value, index, list) {
+      index = keys ? keys[--length] : --length;
+      if (!initial) {
+        memo = obj[index];
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, obj[index], index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    return _.filter(obj, function(value, index, list) {
+      return !iterator.call(context, value, index, list);
+    }, context);
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    each(obj, function(value, index, list) {
+      if (result || (result = iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if the array or object contains a given value (using `===`).
+  // Aliased as `include`.
+  _.contains = _.include = function(obj, target) {
+    if (obj == null) return false;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    return any(obj, function(value) {
+      return value === target;
+    });
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    var isFunc = _.isFunction(method);
+    return _.map(obj, function(value) {
+      return (isFunc ? method : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Convenience version of a common use case of `filter`: selecting only objects
+  // containing specific `key:value` pairs.
+  _.where = function(obj, attrs, first) {
+    if (_.isEmpty(attrs)) return first ? null : [];
+    return _[first ? 'find' : 'filter'](obj, function(value) {
+      for (var key in attrs) {
+        if (attrs[key] !== value[key]) return false;
+      }
+      return true;
+    });
+  };
+
+  // Convenience version of a common use case of `find`: getting the first object
+  // containing specific `key:value` pairs.
+  _.findWhere = function(obj, attrs) {
+    return _.where(obj, attrs, true);
+  };
+
+  // Return the maximum element or (element-based computation).
+  // Can't optimize arrays of integers longer than 65,535 elements.
+  // See: https://bugs.webkit.org/show_bug.cgi?id=80797
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.max.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return -Infinity;
+    var result = {computed : -Infinity, value: -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.min.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return Infinity;
+    var result = {computed : Infinity, value: Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Shuffle an array.
+  _.shuffle = function(obj) {
+    var rand;
+    var index = 0;
+    var shuffled = [];
+    each(obj, function(value) {
+      rand = _.random(index++);
+      shuffled[index - 1] = shuffled[rand];
+      shuffled[rand] = value;
+    });
+    return shuffled;
+  };
+
+  // An internal function to generate lookup iterators.
+  var lookupIterator = function(value) {
+    return _.isFunction(value) ? value : function(obj){ return obj[value]; };
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, value, context) {
+    var iterator = lookupIterator(value);
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        index : index,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria;
+      var b = right.criteria;
+      if (a !== b) {
+        if (a > b || a === void 0) return 1;
+        if (a < b || b === void 0) return -1;
+      }
+      return left.index < right.index ? -1 : 1;
+    }), 'value');
+  };
+
+  // An internal function used for aggregate "group by" operations.
+  var group = function(obj, value, context, behavior) {
+    var result = {};
+    var iterator = lookupIterator(value || _.identity);
+    each(obj, function(value, index) {
+      var key = iterator.call(context, value, index, obj);
+      behavior(result, key, value);
+    });
+    return result;
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key, value) {
+      (_.has(result, key) ? result[key] : (result[key] = [])).push(value);
+    });
+  };
+
+  // Counts instances of an object that group by a certain criterion. Pass
+  // either a string attribute to count by, or a function that returns the
+  // criterion.
+  _.countBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key) {
+      if (!_.has(result, key)) result[key] = 0;
+      result[key]++;
+    });
+  };
+
+  // Use a comparator function to figure out the smallest index at which
+  // an object should be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator, context) {
+    iterator = iterator == null ? _.identity : lookupIterator(iterator);
+    var value = iterator.call(context, obj);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >>> 1;
+      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely convert anything iterable into a real, live array.
+  _.toArray = function(obj) {
+    if (!obj) return [];
+    if (_.isArray(obj)) return slice.call(obj);
+    if (obj.length === +obj.length) return _.map(obj, _.identity);
+    return _.values(obj);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    if (obj == null) return 0;
+    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
+    if (array == null) return void 0;
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the last entry of the array. Especially useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    if (array == null) return void 0;
+    if ((n != null) && !guard) {
+      return slice.call(array, Math.max(array.length - n, 0));
+    } else {
+      return array[array.length - 1];
+    }
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+  // Especially useful on the arguments object. Passing an **n** will return
+  // the rest N values in the array. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = _.drop = function(array, n, guard) {
+    return slice.call(array, (n == null) || guard ? 1 : n);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, _.identity);
+  };
+
+  // Internal implementation of a recursive `flatten` function.
+  var flatten = function(input, shallow, output) {
+    each(input, function(value) {
+      if (_.isArray(value)) {
+        shallow ? push.apply(output, value) : flatten(value, shallow, output);
+      } else {
+        output.push(value);
+      }
+    });
+    return output;
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array, shallow) {
+    return flatten(array, shallow, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iterator, context) {
+    if (_.isFunction(isSorted)) {
+      context = iterator;
+      iterator = isSorted;
+      isSorted = false;
+    }
+    var initial = iterator ? _.map(array, iterator, context) : array;
+    var results = [];
+    var seen = [];
+    each(initial, function(value, index) {
+      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
+        seen.push(value);
+        results.push(array[index]);
+      }
+    });
+    return results;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(concat.apply(ArrayProto, arguments));
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersection = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array) {
+    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.contains(rest, value); });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) {
+      results[i] = _.pluck(args, "" + i);
+    }
+    return results;
+  };
+
+  // Converts lists into objects. Pass either a single array of `[key, value]`
+  // pairs, or two parallel arrays of the same length -- one of keys, and one of
+  // the corresponding values.
+  _.object = function(list, values) {
+    if (list == null) return {};
+    var result = {};
+    for (var i = 0, l = list.length; i < l; i++) {
+      if (values) {
+        result[list[i]] = values[i];
+      } else {
+        result[list[i][0]] = list[i][1];
+      }
+    }
+    return result;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i = 0, l = array.length;
+    if (isSorted) {
+      if (typeof isSorted == 'number') {
+        i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted);
+      } else {
+        i = _.sortedIndex(array, item);
+        return array[i] === item ? i : -1;
+      }
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
+    for (; i < l; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
+    var hasIndex = from != null;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
+      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
+    }
+    var i = (hasIndex ? from : array.length);
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
+    while(idx < len) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
+  // available.
+  _.bind = function(func, context) {
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    var args = slice.call(arguments, 2);
+    return function() {
+      return func.apply(context, args.concat(slice.call(arguments)));
+    };
+  };
+
+  // Partially apply a function by creating a version that has had some of its
+  // arguments pre-filled, without changing its dynamic `this` context.
+  _.partial = function(func) {
+    var args = slice.call(arguments, 1);
+    return function() {
+      return func.apply(this, args.concat(slice.call(arguments)));
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length === 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(null, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var context, args, timeout, result;
+    var previous = 0;
+    var later = function() {
+      previous = new Date;
+      timeout = null;
+      result = func.apply(context, args);
+    };
+    return function() {
+      var now = new Date;
+      var remaining = wait - (now - previous);
+      context = this;
+      args = arguments;
+      if (remaining <= 0) {
+        clearTimeout(timeout);
+        timeout = null;
+        previous = now;
+        result = func.apply(context, args);
+      } else if (!timeout) {
+        timeout = setTimeout(later, remaining);
+      }
+      return result;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
+    var timeout, result;
+    return function() {
+      var context = this, args = arguments;
+      var later = function() {
+        timeout = null;
+        if (!immediate) result = func.apply(context, args);
+      };
+      var callNow = immediate && !timeout;
+      clearTimeout(timeout);
+      timeout = setTimeout(later, wait);
+      if (callNow) result = func.apply(context, args);
+      return result;
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      memo = func.apply(this, arguments);
+      func = null;
+      return memo;
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func];
+      push.apply(args, arguments);
+      return wrapper.apply(this, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = arguments;
+    return function() {
+      var args = arguments;
+      for (var i = funcs.length - 1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    if (times <= 0) return func();
+    return function() {
+      if (--times < 1) {
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var keys = [];
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    var values = [];
+    for (var key in obj) if (_.has(obj, key)) values.push(obj[key]);
+    return values;
+  };
+
+  // Convert an object into a list of `[key, value]` pairs.
+  _.pairs = function(obj) {
+    var pairs = [];
+    for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]);
+    return pairs;
+  };
+
+  // Invert the keys and values of an object. The values must be serializable.
+  _.invert = function(obj) {
+    var result = {};
+    for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key;
+    return result;
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    each(keys, function(key) {
+      if (key in obj) copy[key] = obj[key];
+    });
+    return copy;
+  };
+
+   // Return a copy of the object without the blacklisted properties.
+  _.omit = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    for (var key in obj) {
+      if (!_.contains(keys, key)) copy[key] = obj[key];
+    }
+    return copy;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          if (obj[prop] == null) obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Internal recursive comparison function for `isEqual`.
+  var eq = function(a, b, aStack, bStack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null || b == null) return a === b;
+    // Unwrap any wrapped objects.
+    if (a instanceof _) a = a._wrapped;
+    if (b instanceof _) b = b._wrapped;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return a == String(b);
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
+    }
+    if (typeof a != 'object' || typeof b != 'object') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    var length = aStack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (aStack[length] == a) return bStack[length] == b;
+    }
+    // Add the first object to the stack of traversed objects.
+    aStack.push(a);
+    bStack.push(b);
+    var size = 0, result = true;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
+        }
+      }
+    } else {
+      // Objects with different constructors are not equivalent, but `Object`s
+      // from different frames are.
+      var aCtor = a.constructor, bCtor = b.constructor;
+      if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
+                               _.isFunction(bCtor) && (bCtor instanceof bCtor))) {
+        return false;
+      }
+      // Deep compare objects.
+      for (var key in a) {
+        if (_.has(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (_.has(b, key) && !(size--)) break;
+        }
+        result = !size;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    aStack.pop();
+    bStack.pop();
+    return result;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, [], []);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (obj == null) return true;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (_.has(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType === 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) == '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
+  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
+    _['is' + name] = function(obj) {
+      return toString.call(obj) == '[object ' + name + ']';
+    };
+  });
+
+  // Define a fallback version of the method in browsers (ahem, IE), where
+  // there isn't any inspectable "Arguments" type.
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return !!(obj && _.has(obj, 'callee'));
+    };
+  }
+
+  // Optimize `isFunction` if appropriate.
+  if (typeof (/./) !== 'function') {
+    _.isFunction = function(obj) {
+      return typeof obj === 'function';
+    };
+  }
+
+  // Is a given object a finite number?
+  _.isFinite = function(obj) {
+    return isFinite(obj) && !isNaN(parseFloat(obj));
+  };
+
+  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && obj != +obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Shortcut function for checking if an object has a given property directly
+  // on itself (in other words, not on a prototype).
+  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function **n** times.
+  _.times = function(n, iterator, context) {
+    var accum = Array(n);
+    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
+    return accum;
+  };
+
+  // Return a random integer between min and max (inclusive).
+  _.random = function(min, max) {
+    if (max == null) {
+      max = min;
+      min = 0;
+    }
+    return min + Math.floor(Math.random() * (max - min + 1));
+  };
+
+  // List of HTML entities for escaping.
+  var entityMap = {
+    escape: {
+      '&': '&amp;',
+      '<': '&lt;',
+      '>': '&gt;',
+      '"': '&quot;',
+      "'": '&#x27;',
+      '/': '&#x2F;'
+    }
+  };
+  entityMap.unescape = _.invert(entityMap.escape);
+
+  // Regexes containing the keys and values listed immediately above.
+  var entityRegexes = {
+    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
+    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
+  };
+
+  // Functions for escaping and unescaping strings to/from HTML interpolation.
+  _.each(['escape', 'unescape'], function(method) {
+    _[method] = function(string) {
+      if (string == null) return '';
+      return ('' + string).replace(entityRegexes[method], function(match) {
+        return entityMap[method][match];
+      });
+    };
+  });
+
+  // If the value of the named property is a function then invoke it;
+  // otherwise, return it.
+  _.result = function(object, property) {
+    if (object == null) return null;
+    var value = object[property];
+    return _.isFunction(value) ? value.call(object) : value;
+  };
+
+  // Add your own custom functions to the Underscore object.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      var func = _[name] = obj[name];
+      _.prototype[name] = function() {
+        var args = [this._wrapped];
+        push.apply(args, arguments);
+        return result.call(this, func.apply(_, args));
+      };
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = ++idCounter + '';
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g,
+    escape      : /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /(.)^/;
+
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    "'":      "'",
+    '\\':     '\\',
+    '\r':     'r',
+    '\n':     'n',
+    '\t':     't',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(text, data, settings) {
+    var render;
+    settings = _.defaults({}, settings, _.templateSettings);
+
+    // Combine delimiters into one regular expression via alternation.
+    var matcher = new RegExp([
+      (settings.escape || noMatch).source,
+      (settings.interpolate || noMatch).source,
+      (settings.evaluate || noMatch).source
+    ].join('|') + '|$', 'g');
+
+    // Compile the template source, escaping string literals appropriately.
+    var index = 0;
+    var source = "__p+='";
+    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+      source += text.slice(index, offset)
+        .replace(escaper, function(match) { return '\\' + escapes[match]; });
+
+      if (escape) {
+        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+      }
+      if (interpolate) {
+        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+      }
+      if (evaluate) {
+        source += "';\n" + evaluate + "\n__p+='";
+      }
+      index = offset + match.length;
+      return match;
+    });
+    source += "';\n";
+
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+    source = "var __t,__p='',__j=Array.prototype.join," +
+      "print=function(){__p+=__j.call(arguments,'');};\n" +
+      source + "return __p;\n";
+
+    try {
+      render = new Function(settings.variable || 'obj', '_', source);
+    } catch (e) {
+      e.source = source;
+      throw e;
+    }
+
+    if (data) return render(data, _);
+    var template = function(data) {
+      return render.call(this, data, _);
+    };
+
+    // Provide the compiled function source as a convenience for precompilation.
+    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
+
+    return template;
+  };
+
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
+  // OOP
+  // ---------------
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj) {
+    return this._chain ? _(obj).chain() : obj;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      var obj = this._wrapped;
+      method.apply(obj, arguments);
+      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
+      return result.call(this, obj);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      return result.call(this, method.apply(this._wrapped, arguments));
+    };
+  });
+
+  _.extend(_.prototype, {
+
+    // Start chaining a wrapped Underscore object.
+    chain: function() {
+      this._chain = true;
+      return this;
+    },
+
+    // Extracts the result from a wrapped and chained object.
+    value: function() {
+      return this._wrapped;
+    }
+
+  });
+
+}).call(this);
+
+},{}],54:[function(require,module,exports){
+var skin = require('minecraft-skin');
+
+module.exports = function (game) {
+    var mountPoint;
+    var possessed;
+    
+    return function (img, skinOpts) {
+        if (!skinOpts) {
+          skinOpts = {};
+        }
+        skinOpts.scale = skinOpts.scale || new game.THREE.Vector3(0.04, 0.04, 0.04);
+        var playerSkin = skin(game.THREE, img, skinOpts);
+        var player = playerSkin.mesh;
+        var physics = game.makePhysical(player);
+        physics.playerSkin = playerSkin;
+        
+        player.position.set(0, 562, -20);
+        game.scene.add(player);
+        game.addItem(physics);
+        
+        physics.yaw = player;
+        physics.pitch = player.head;
+        physics.subjectTo(game.gravity);
+        physics.blocksCreation = true;
+        
+        game.control(physics);
+        
+        physics.move = function (x, y, z) {
+            var xyz = parseXYZ(x, y, z);
+            physics.yaw.position.x += xyz.x;
+            physics.yaw.position.y += xyz.y;
+            physics.yaw.position.z += xyz.z;
+        };
+        
+        physics.moveTo = function (x, y, z) {
+            var xyz = parseXYZ(x, y, z);
+            physics.yaw.position.x = xyz.x;
+            physics.yaw.position.y = xyz.y;
+            physics.yaw.position.z = xyz.z;
+        };
+        
+        var pov = 1;
+        physics.pov = function (type) {
+            if (type === 'first' || type === 1) {
+                pov = 1;
+            }
+            else if (type === 'third' || type === 3) {
+                pov = 3;
+            }
+            physics.possess();
+        };
+        
+        physics.toggle = function () {
+            physics.pov(pov === 1 ? 3 : 1);
+        };
+        
+        physics.possess = function () {
+            if (possessed) possessed.remove(game.camera);
+            var key = pov === 1 ? 'cameraInside' : 'cameraOutside';
+            player[key].add(game.camera);
+            possessed = player[key];
+        };
+        
+        physics.position = physics.yaw.position;
+        
+        return physics;
+    }
+};
+
+function parseXYZ (x, y, z) {
+    if (typeof x === 'object' && Array.isArray(x)) {
+        return { x: x[0], y: x[1], z: x[2] };
+    }
+    else if (typeof x === 'object') {
+        return { x: x.x || 0, y: x.y || 0, z: x.z || 0 };
+    }
+    return { x: Number(x), y: Number(y), z: Number(z) };
+}
+
+},{"minecraft-skin":55}],55:[function(require,module,exports){
+arguments[4][2][0].apply(exports,arguments)
+},{"dup":2}],56:[function(require,module,exports){
+var walkSpeed = 1.0
+var startedWalking = 0.0
+var stoppedWalking = 0.0
+var walking = false
+var acceleration = 1.0
+
+exports.render = function(skin){
+  var time = Date.now() / 1000
+  if (walking && time < startedWalking + acceleration){
+    walkSpeed = (time - startedWalking) / acceleration
+  }
+  if (!walking && time < stoppedWalking + acceleration){
+    walkSpeed = -1 / acceleration * (time - stoppedWalking) + 1
+  }
+
+  skin.head.rotation.y = Math.sin(time * 1.5) / 3 * walkSpeed
+  skin.head.rotation.z = Math.sin(time) / 2 * walkSpeed
+  
+  skin.rightArm.rotation.z = 2 * Math.cos(0.6662 * time * 10 + Math.PI) * walkSpeed
+  skin.rightArm.rotation.x = 1 * (Math.cos(0.2812 * time * 10) - 1) * walkSpeed
+  skin.leftArm.rotation.z = 2 * Math.cos(0.6662 * time * 10) * walkSpeed
+  skin.leftArm.rotation.x = 1 * (Math.cos(0.2312 * time * 10) + 1) * walkSpeed
+  
+  skin.rightLeg.rotation.z = 1.4 * Math.cos(0.6662 * time * 10) * walkSpeed
+  skin.leftLeg.rotation.z = 1.4 * Math.cos(0.6662 * time * 10 + Math.PI) * walkSpeed
+}
+
+exports.startWalking = function(){
+  var now = Date.now() / 1000
+  walking = true
+  if (stoppedWalking + acceleration>now){
+    var progress = now - stoppedWalking;
+    startedWalking = now - (stoppedWalking + acceleration - now)
+  } else {
+    startedWalking = Date.now() / 1000
+  }
+}
+exports.stopWalking = function() {
+  var now = Date.now() / 1000
+  walking = false
+  if (startedWalking + acceleration > now){
+    stoppedWalking = now - (startedWalking + acceleration - now)
+  } else {
+    stoppedWalking = Date.now() / 1000
+  }
+}
+exports.isWalking = function(){
+  return walking
+}
+
+exports.setAcceleration = function(newA){
+  acceleration = newA
+}
+},{}],57:[function(require,module,exports){
+arguments[4][40][0].apply(exports,arguments)
+},{"dup":40,"events":70,"inherits":64}],58:[function(require,module,exports){
+var chunker = require('./chunker')
+
+module.exports = function(opts) {
+  if (!opts.generateVoxelChunk) opts.generateVoxelChunk = function(low, high) {
+    return generate(low, high, module.exports.generator['Valley'])
+  }
+  return chunker(opts)
+}
+
+module.exports.meshers = {
+  culled: require('./meshers/culled').mesher,
+  greedy: require('./meshers/greedy').mesher,
+  transgreedy: require('./meshers/transgreedy').mesher,
+  monotone: require('./meshers/monotone').mesher,
+  stupid: require('./meshers/stupid').mesher
+}
+
+module.exports.Chunker = chunker.Chunker
+module.exports.geometry = {}
+module.exports.generator = {}
+module.exports.generate = generate
+
+// from https://github.com/mikolalysenko/mikolalysenko.github.com/blob/master/MinecraftMeshes2/js/testdata.js#L4
+function generate(l, h, f, game) {
+  var d = [ h[0]-l[0], h[1]-l[1], h[2]-l[2] ]
+  var v = new Int8Array(d[0]*d[1]*d[2])
+  var n = 0
+  for(var k=l[2]; k<h[2]; ++k)
+  for(var j=l[1]; j<h[1]; ++j)
+  for(var i=l[0]; i<h[0]; ++i, ++n) {
+    v[n] = f(i,j,k,n,game)
+  }
+  return {voxels:v, dims:d}
+}
+
+// shape and terrain generator functions
+module.exports.generator['Sphere'] = function(i,j,k) {
+  return i*i+j*j+k*k <= 16*16 ? 1 : 0
+}
+
+module.exports.generator['Noise'] = function(i,j,k) {
+  return Math.random() < 0.1 ? Math.random() * 0xffffff : 0;
+}
+
+module.exports.generator['Dense Noise'] = function(i,j,k) {
+  return Math.round(Math.random() * 0xffffff);
+}
+
+module.exports.generator['Checker'] = function(i,j,k) {
+  return !!((i+j+k)&1) ? (((i^j^k)&2) ? 1 : 0xffffff) : 0;
+}
+
+module.exports.generator['Hill'] = function(i,j,k) {
+  return j <= 16 * Math.exp(-(i*i + k*k) / 64) ? 1 : 0;
+}
+
+module.exports.generator['Valley'] = function(i,j,k) {
+  return j <= (i*i + k*k) * 31 / (32*32*2) + 1 ? 1 : 0;
+}
+
+module.exports.generator['Hilly Terrain'] = function(i,j,k) {
+  var h0 = 3.0 * Math.sin(Math.PI * i / 12.0 - Math.PI * k * 0.1) + 27;    
+  if(j > h0+1) {
+    return 0;
+  }
+  if(h0 <= j) {
+    return 1;
+  }
+  var h1 = 2.0 * Math.sin(Math.PI * i * 0.25 - Math.PI * k * 0.3) + 20;
+  if(h1 <= j) {
+    return 2;
+  }
+  if(2 < j) {
+    return Math.random() < 0.1 ? 0x222222 : 0xaaaaaa;
+  }
+  return 3;
+}
+
+module.exports.scale = function ( x, fromLow, fromHigh, toLow, toHigh ) {
+  return ( x - fromLow ) * ( toHigh - toLow ) / ( fromHigh - fromLow ) + toLow
+}
+
+// convenience function that uses the above functions to prebake some simple voxel geometries
+module.exports.generateExamples = function() {
+  return {
+    'Sphere': generate([-16,-16,-16], [16,16,16], module.exports.generator['Sphere']),
+    'Noise': generate([0,0,0], [16,16,16], module.exports.generator['Noise']),
+    'Dense Noise': generate([0,0,0], [16,16,16], module.exports.generator['Dense Noise']),
+    'Checker': generate([0,0,0], [8,8,8], module.exports.generator['Checker']),
+    'Hill': generate([-16, 0, -16], [16,16,16], module.exports.generator['Hill']),
+    'Valley': generate([0,0,0], [32,32,32], module.exports.generator['Valley']),
+    'Hilly Terrain': generate([0, 0, 0], [32,32,32], module.exports.generator['Hilly Terrain'])
+  }
+}
+
+
+},{"./chunker":57,"./meshers/culled":59,"./meshers/greedy":60,"./meshers/monotone":61,"./meshers/stupid":62,"./meshers/transgreedy":63}],59:[function(require,module,exports){
+arguments[4][42][0].apply(exports,arguments)
+},{"dup":42}],60:[function(require,module,exports){
+arguments[4][43][0].apply(exports,arguments)
+},{"dup":43}],61:[function(require,module,exports){
+arguments[4][44][0].apply(exports,arguments)
+},{"dup":44}],62:[function(require,module,exports){
+arguments[4][45][0].apply(exports,arguments)
+},{"dup":45}],63:[function(require,module,exports){
+var GreedyMesh = (function greedyLoader() {
+    
+// contains all forward faces (in terms of scan direction)
+var mask = new Int32Array(4096);
+// and all backwards faces. needed when there are two transparent blocks
+// next to each other.
+var invMask = new Int32Array(4096);
+
+// setting 16th bit if transparent
+var kTransparentMask    = 0x8000;
+var kNoFlagsMask        = 0x7FFF;
+var kTransparentTypes   = [];
+
+kTransparentTypes[16] = true
+
+function isTransparent(v) {
+  return (v & kTransparentMask) === kTransparentMask;
+}
+
+function removeFlags(v) {
+  return (v & kNoFlagsMask);
+}
+
+return function ohSoGreedyMesher(volume, dims, mesherExtraData) {
+  var vertices = [], faces = []
+    , dimsX = dims[0]
+    , dimsY = dims[1]
+    , dimsXY = dimsX * dimsY;
+
+  var tVertices = [], tFaces = []
+
+  var transparentTypes = mesherExtraData ? (mesherExtraData.transparentTypes || {}) : {};
+  var getType = function(voxels, offset) {
+    var type = voxels[offset];
+    return type | (type in transparentTypes ? kTransparentMask : 0);
+  }
+
+
+  //Sweep over 3-axes
+  for(var d=0; d<3; ++d) {
+    var i, j, k, l, w, W, h, n, c
+      , u = (d+1)%3
+      , v = (d+2)%3
+      , x = [0,0,0]
+      , q = [0,0,0]
+      , du = [0,0,0]
+      , dv = [0,0,0]
+      , dimsD = dims[d]
+      , dimsU = dims[u]
+      , dimsV = dims[v]
+      , qdimsX, qdimsXY
+      , xd
+
+    if (mask.length < dimsU * dimsV) {
+      mask = new Int32Array(dimsU * dimsV);
+      invMask = new Int32Array(dimsU * dimsV);
+    }
+
+    q[d] =  1;
+    x[d] = -1;
+
+    qdimsX  = dimsX  * q[1]
+    qdimsXY = dimsXY * q[2]
+
+    // Compute mask
+    while (x[d] < dimsD) {
+      xd = x[d]
+      n = 0;
+
+      for(x[v] = 0; x[v] < dimsV; ++x[v]) {
+        for(x[u] = 0; x[u] < dimsU; ++x[u], ++n) {
+          // Modified to read through getType()
+          var a = xd >= 0      && getType(volume, x[0]      + dimsX * x[1]          + dimsXY * x[2]          )
+            , b = xd < dimsD-1 && getType(volume, x[0]+q[0] + dimsX * x[1] + qdimsX + dimsXY * x[2] + qdimsXY)
+
+          // both are transparent, add to both directions
+          if (isTransparent(a) && isTransparent(b)) {
+            mask[n] = a;
+            invMask[n] = b;
+          // if a is solid and b is not there or transparent
+          } else if (a && (!b || isTransparent(b))) {
+            mask[n] = a;
+            invMask[n] = 0
+          // if b is solid and a is not there or transparent
+          } else if (b && (!a || isTransparent(a))) {
+            mask[n] = 0
+            invMask[n] = b;
+          // dont draw this face
+          } else {
+            mask[n] = 0
+            invMask[n] = 0
+          }
+        }
+      }
+
+      ++x[d];
+
+      // Generate mesh for mask using lexicographic ordering
+      function generateMesh(mask, dimsV, dimsU, vertices, faces, clockwise) {
+        clockwise = clockwise === undefined ? true : clockwise;
+        var n, j, i, c, w, h, k, du = [0,0,0], dv = [0,0,0];
+        n = 0;
+        for (j=0; j < dimsV; ++j) {
+          for (i=0; i < dimsU; ) {
+            c = mask[n];
+            if (!c) {
+              i++;  n++; continue;
+            }
+
+            //Compute width
+            w = 1;
+            while (c === mask[n+w] && i+w < dimsU) w++;
+
+            //Compute height (this is slightly awkward)
+            for (h=1; j+h < dimsV; ++h) {
+              k = 0;
+              while (k < w && c === mask[n+k+h*dimsU]) k++
+              if (k < w) break;
+            }
+
+            // Add quad
+            // The du/dv arrays are reused/reset
+            // for each iteration.
+            du[d] = 0; dv[d] = 0;
+            x[u]  = i;  x[v] = j;
+
+            if (clockwise) {
+            // if (c > 0) {
+              dv[v] = h; dv[u] = 0;
+              du[u] = w; du[v] = 0;
+            } else {
+              // c = -c;
+              du[v] = h; du[u] = 0;
+              dv[u] = w; dv[v] = 0;
+            }
+            
+            // ## enable code to ensure that transparent faces are last in the list
+            // if (!isTransparent(c)) {
+              var vertex_count = vertices.length;
+              vertices.push([x[0],             x[1],             x[2]            ]);
+              vertices.push([x[0]+du[0],       x[1]+du[1],       x[2]+du[2]      ]);
+              vertices.push([x[0]+du[0]+dv[0], x[1]+du[1]+dv[1], x[2]+du[2]+dv[2]]);
+              vertices.push([x[0]      +dv[0], x[1]      +dv[1], x[2]      +dv[2]]);
+              faces.push([vertex_count, vertex_count+1, vertex_count+2, vertex_count+3, removeFlags(c)]);
+            // } else {
+            //   var vertex_count = tVertices.length;
+            //   tVertices.push([x[0],             x[1],             x[2]            ]);
+            //   tVertices.push([x[0]+du[0],       x[1]+du[1],       x[2]+du[2]      ]);
+            //   tVertices.push([x[0]+du[0]+dv[0], x[1]+du[1]+dv[1], x[2]+du[2]+dv[2]]);
+            //   tVertices.push([x[0]      +dv[0], x[1]      +dv[1], x[2]      +dv[2]]);
+            //   tFaces.push([vertex_count, vertex_count+1, vertex_count+2, vertex_count+3, removeFlags(c)]);
+            // }
+
+            //Zero-out mask
+            W = n + w;
+            for(l=0; l<h; ++l) {
+              for(k=n; k<W; ++k) {
+                mask[k+l*dimsU] = 0;
+              }
+            }
+
+            //Increment counters and continue
+            i += w; n += w;
+          }
+        }
+      }
+      generateMesh(mask, dimsV, dimsU, vertices, faces, true)
+      generateMesh(invMask, dimsV, dimsU, vertices, faces, false)
+    }
+  }
+  
+  // ## enable code to ensure that transparent faces are last in the list
+  // var vertex_count = vertices.length;
+  // var newFaces = tFaces.map(function(v) {
+  //   return [vertex_count+v[0], vertex_count+v[1], vertex_count+v[2], vertex_count+v[3], v[4]]
+  // })
+  // 
+  // return { vertices:vertices.concat(tVertices), faces:faces.concat(newFaces) };
+  
+  // TODO: Try sorting by texture to see if we can reduce draw calls.
+  // faces.sort(function sortFaces(a, b) {
+  //   return b[4] - a[4];
+  // })
+  return { vertices:vertices, faces:faces };
+}
+})();
+
+if(exports) {
+  exports.mesher = GreedyMesh;
+}
+
+},{}],64:[function(require,module,exports){
+arguments[4][9][0].apply(exports,arguments)
+},{"dup":9}],65:[function(require,module,exports){
+require('./')()
+
+},{"./":1}],66:[function(require,module,exports){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+var isArray = require('is-array')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+Buffer.poolSize = 8192 // not used by this implementation
+
+var kMaxLength = 0x3fffffff
+var rootParent = {}
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Use Object implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * Note:
+ *
+ * - Implementation must support adding new properties to `Uint8Array` instances.
+ *   Firefox 4-29 lacked support, fixed in Firefox 30+.
+ *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+ *
+ *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+ *
+ *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+ *    incorrect length in some situations.
+ *
+ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
+ * get the Object implementation, which is slower but will work correctly.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = (function () {
+  try {
+    var buf = new ArrayBuffer(0)
+    var arr = new Uint8Array(buf)
+    arr.foo = function () { return 42 }
+    return 42 === arr.foo() && // typed array instances can be augmented
+        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+  } catch (e) {
+    return false
+  }
+})()
+
+/**
+ * Class: Buffer
+ * =============
+ *
+ * The Buffer constructor returns instances of `Uint8Array` that are augmented
+ * with function properties for all the node `Buffer` API functions. We use
+ * `Uint8Array` so that square bracket notation works as expected -- it returns
+ * a single octet.
+ *
+ * By augmenting the instances, we can avoid modifying the `Uint8Array`
+ * prototype.
+ */
+function Buffer (subject, encoding, noZero) {
+  if (!(this instanceof Buffer))
+    return new Buffer(subject, encoding, noZero)
+
+  var type = typeof subject
+
+  // Find the length
+  var length
+  if (type === 'number')
+    length = subject > 0 ? subject >>> 0 : 0
+  else if (type === 'string') {
+    length = Buffer.byteLength(subject, encoding)
+  } else if (type === 'object' && subject !== null) { // assume object is array-like
+    if (subject.type === 'Buffer' && isArray(subject.data))
+      subject = subject.data
+    length = +subject.length > 0 ? Math.floor(+subject.length) : 0
+  } else
+    throw new TypeError('must start with number, buffer, array or string')
+
+  if (length > kMaxLength)
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+      'size: 0x' + kMaxLength.toString(16) + ' bytes')
+
+  var buf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Preferred: Return an augmented `Uint8Array` instance for best performance
+    buf = Buffer._augment(new Uint8Array(length))
+  } else {
+    // Fallback: Return THIS instance of Buffer (created by `new`)
+    buf = this
+    buf.length = length
+    buf._isBuffer = true
+  }
+
+  var i
+  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
+    // Speed optimization -- use set if we're copying from a typed array
+    buf._set(subject)
+  } else if (isArrayish(subject)) {
+    // Treat array-ish objects as a byte array
+    if (Buffer.isBuffer(subject)) {
+      for (i = 0; i < length; i++)
+        buf[i] = subject.readUInt8(i)
+    } else {
+      for (i = 0; i < length; i++)
+        buf[i] = ((subject[i] % 256) + 256) % 256
+    }
+  } else if (type === 'string') {
+    buf.write(subject, 0, encoding)
+  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT && !noZero) {
+    for (i = 0; i < length; i++) {
+      buf[i] = 0
+    }
+  }
+
+  if (length > 0 && length <= Buffer.poolSize)
+    buf.parent = rootParent
+
+  return buf
+}
+
+function SlowBuffer(subject, encoding, noZero) {
+  if (!(this instanceof SlowBuffer))
+    return new SlowBuffer(subject, encoding, noZero)
+
+  var buf = new Buffer(subject, encoding, noZero)
+  delete buf.parent
+  return buf
+}
+
+Buffer.isBuffer = function (b) {
+  return !!(b != null && b._isBuffer)
+}
+
+Buffer.compare = function (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b))
+    throw new TypeError('Arguments must be Buffers')
+
+  var x = a.length
+  var y = b.length
+  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
+  if (i !== len) {
+    x = a[i]
+    y = b[i]
+  }
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'binary':
+    case 'base64':
+    case 'raw':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function (list, totalLength) {
+  if (!isArray(list)) throw new TypeError('Usage: Buffer.concat(list[, length])')
+
+  if (list.length === 0) {
+    return new Buffer(0)
+  } else if (list.length === 1) {
+    return list[0]
+  }
+
+  var i
+  if (totalLength === undefined) {
+    totalLength = 0
+    for (i = 0; i < list.length; i++) {
+      totalLength += list[i].length
+    }
+  }
+
+  var buf = new Buffer(totalLength)
+  var pos = 0
+  for (i = 0; i < list.length; i++) {
+    var item = list[i]
+    item.copy(buf, pos)
+    pos += item.length
+  }
+  return buf
+}
+
+Buffer.byteLength = function (str, encoding) {
+  var ret
+  str = str + ''
+  switch (encoding || 'utf8') {
+    case 'ascii':
+    case 'binary':
+    case 'raw':
+      ret = str.length
+      break
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      ret = str.length * 2
+      break
+    case 'hex':
+      ret = str.length >>> 1
+      break
+    case 'utf8':
+    case 'utf-8':
+      ret = utf8ToBytes(str).length
+      break
+    case 'base64':
+      ret = base64ToBytes(str).length
+      break
+    default:
+      ret = str.length
+  }
+  return ret
+}
+
+// pre-set for values that may exist in the future
+Buffer.prototype.length = undefined
+Buffer.prototype.parent = undefined
+
+// toString(encoding, start=0, end=buffer.length)
+Buffer.prototype.toString = function (encoding, start, end) {
+  var loweredCase = false
+
+  start = start >>> 0
+  end = end === undefined || end === Infinity ? this.length : end >>> 0
+
+  if (!encoding) encoding = 'utf8'
+  if (start < 0) start = 0
+  if (end > this.length) end = this.length
+  if (end <= start) return ''
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'binary':
+        return binarySlice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase)
+          throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.equals = function (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max)
+      str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  return Buffer.compare(this, b)
+}
+
+// `get` will be removed in Node 0.13+
+Buffer.prototype.get = function (offset) {
+  console.log('.get() is deprecated. Access using array indexes instead.')
+  return this.readUInt8(offset)
+}
+
+// `set` will be removed in Node 0.13+
+Buffer.prototype.set = function (v, offset) {
+  console.log('.set() is deprecated. Access using array indexes instead.')
+  return this.writeUInt8(v, offset)
+}
+
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
+
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; i++) {
+    var byte = parseInt(string.substr(i * 2, 2), 16)
+    if (isNaN(byte)) throw new Error('Invalid hex string')
+    buf[offset + i] = byte
+  }
+  return i
+}
+
+function utf8Write (buf, string, offset, length) {
+  var charsWritten = blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+  return charsWritten
+}
+
+function asciiWrite (buf, string, offset, length) {
+  var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
+  return charsWritten
+}
+
+function binaryWrite (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+  var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
+  return charsWritten
+}
+
+function utf16leWrite (buf, string, offset, length) {
+  var charsWritten = blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length, 2)
+  return charsWritten
+}
+
+Buffer.prototype.write = function (string, offset, length, encoding) {
+  // Support both (string, offset, length, encoding)
+  // and the legacy (string, encoding, offset, length)
+  if (isFinite(offset)) {
+    if (!isFinite(length)) {
+      encoding = length
+      length = undefined
+    }
+  } else {  // legacy
+    var swap = encoding
+    encoding = offset
+    offset = length
+    length = swap
+  }
+
+  offset = Number(offset) || 0
+
+  if (length < 0 || offset < 0 || offset > this.length)
+    throw new RangeError('attempt to write outside buffer bounds');
+
+  var remaining = this.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+  encoding = String(encoding || 'utf8').toLowerCase()
+
+  var ret
+  switch (encoding) {
+    case 'hex':
+      ret = hexWrite(this, string, offset, length)
+      break
+    case 'utf8':
+    case 'utf-8':
+      ret = utf8Write(this, string, offset, length)
+      break
+    case 'ascii':
+      ret = asciiWrite(this, string, offset, length)
+      break
+    case 'binary':
+      ret = binaryWrite(this, string, offset, length)
+      break
+    case 'base64':
+      ret = base64Write(this, string, offset, length)
+      break
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      ret = utf16leWrite(this, string, offset, length)
+      break
+    default:
+      throw new TypeError('Unknown encoding: ' + encoding)
+  }
+  return ret
+}
+
+Buffer.prototype.toJSON = function () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
+
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
+
+function utf8Slice (buf, start, end) {
+  var res = ''
+  var tmp = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    if (buf[i] <= 0x7F) {
+      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
+      tmp = ''
+    } else {
+      tmp += '%' + buf[i].toString(16)
+    }
+  }
+
+  return res + decodeUtf8Char(tmp)
+}
+
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
+
+function binarySlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
+}
+
+function hexSlice (buf, start, end) {
+  var len = buf.length
+
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; i++) {
+    out += toHex(buf[i])
+  }
+  return out
+}
+
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+  }
+  return res
+}
+
+Buffer.prototype.slice = function (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len;
+    if (start < 0)
+      start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0)
+      end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start)
+    end = start
+
+  var newBuf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    newBuf = Buffer._augment(this.subarray(start, end))
+  } else {
+    var sliceLen = end - start
+    newBuf = new Buffer(sliceLen, undefined, true)
+    for (var i = 0; i < sliceLen; i++) {
+      newBuf[i] = this[i + start]
+    }
+  }
+
+  if (newBuf.length)
+    newBuf.parent = this.parent || this
+
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0)
+    throw new RangeError('offset is not uint')
+  if (offset + ext > length)
+    throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert)
+    checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100))
+    val += this[offset + i] * mul
+
+  return val
+}
+
+Buffer.prototype.readUIntBE = function (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert)
+    checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100))
+    val += this[offset + --byteLength] * mul;
+
+  return val
+}
+
+Buffer.prototype.readUInt8 = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 1, this.length)
+  return this[offset]
+}
+
+Buffer.prototype.readUInt16LE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
+
+Buffer.prototype.readUInt16BE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
+
+Buffer.prototype.readUInt32LE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 4, this.length)
+
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
+
+Buffer.prototype.readUInt32BE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 4, this.length)
+
+  return (this[offset] * 0x1000000) +
+      ((this[offset + 1] << 16) |
+      (this[offset + 2] << 8) |
+      this[offset + 3])
+}
+
+Buffer.prototype.readIntLE = function (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert)
+    checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100))
+    val += this[offset + i] * mul
+  mul *= 0x80
+
+  if (val >= mul)
+    val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readIntBE = function (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert)
+    checkOffset(offset, byteLength, this.length)
+
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100))
+    val += this[offset + --i] * mul
+  mul *= 0x80
+
+  if (val >= mul)
+    val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readInt8 = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80))
+    return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
+
+Buffer.prototype.readInt16LE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt16BE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt32LE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 4, this.length)
+
+  return (this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16) |
+      (this[offset + 3] << 24)
+}
+
+Buffer.prototype.readInt32BE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+      (this[offset + 1] << 16) |
+      (this[offset + 2] << 8) |
+      (this[offset + 3])
+}
+
+Buffer.prototype.readFloatLE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
+
+Buffer.prototype.readFloatBE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
+
+Buffer.prototype.readDoubleLE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
+
+Buffer.prototype.readDoubleBE = function (offset, noAssert) {
+  if (!noAssert)
+    checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
+
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100))
+    this[offset + i] = (value / mul) >>> 0 & 0xFF
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100))
+    this[offset + i] = (value / mul) >>> 0 & 0xFF
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 1, 0xff, 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  this[offset] = value
+  return offset + 1
+}
+
+function objectWriteUInt16 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+      (littleEndian ? i : 1 - i) * 8
+  }
+}
+
+Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+  } else objectWriteUInt16(this, value, offset, true)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = value
+  } else objectWriteUInt16(this, value, offset, false)
+  return offset + 2
+}
+
+function objectWriteUInt32 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffffffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+  }
+}
+
+Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset + 3] = (value >>> 24)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 1] = (value >>> 8)
+    this[offset] = value
+  } else objectWriteUInt32(this, value, offset, true)
+  return offset + 4
+}
+
+Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = value
+  } else objectWriteUInt32(this, value, offset, false)
+  return offset + 4
+}
+
+Buffer.prototype.writeIntLE = function (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkInt(this,
+             value,
+             offset,
+             byteLength,
+             Math.pow(2, 8 * byteLength - 1) - 1,
+             -Math.pow(2, 8 * byteLength - 1))
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100))
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeIntBE = function (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkInt(this,
+             value,
+             offset,
+             byteLength,
+             Math.pow(2, 8 * byteLength - 1) - 1,
+             -Math.pow(2, 8 * byteLength - 1))
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100))
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = value
+  return offset + 1
+}
+
+Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+  } else objectWriteUInt16(this, value, offset, true)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = value
+  } else objectWriteUInt16(this, value, offset, false)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 3] = (value >>> 24)
+  } else objectWriteUInt32(this, value, offset, true)
+  return offset + 4
+}
+
+Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert)
+    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = value
+  } else objectWriteUInt32(this, value, offset, false)
+  return offset + 4
+}
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+  if (offset < 0) throw new RangeError('index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert)
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert)
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function (target, target_start, start, end) {
+  var source = this
+
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (target_start >= target.length) target_start = target.length
+  if (!target_start) target_start = 0
+  if (end > 0 && end < start) end = start
+
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || source.length === 0) return 0
+
+  // Fatal error conditions
+  if (target_start < 0)
+    throw new RangeError('targetStart out of bounds')
+  if (start < 0 || start >= source.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+  // Are we oob?
+  if (end > this.length)
+    end = this.length
+  if (target.length - target_start < end - start)
+    end = target.length - target_start + start
+
+  var len = end - start
+
+  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+    for (var i = 0; i < len; i++) {
+      target[i + target_start] = this[i + start]
+    }
+  } else {
+    target._set(this.subarray(start, start + len), target_start)
+  }
+
+  return len
+}
+
+// fill(value, start=0, end=buffer.length)
+Buffer.prototype.fill = function (value, start, end) {
+  if (!value) value = 0
+  if (!start) start = 0
+  if (!end) end = this.length
+
+  if (end < start) throw new RangeError('end < start')
+
+  // Fill 0 bytes; we're done
+  if (end === start) return
+  if (this.length === 0) return
+
+  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
+
+  var i
+  if (typeof value === 'number') {
+    for (i = start; i < end; i++) {
+      this[i] = value
+    }
+  } else {
+    var bytes = utf8ToBytes(value.toString())
+    var len = bytes.length
+    for (i = start; i < end; i++) {
+      this[i] = bytes[i % len]
+    }
+  }
+
+  return this
+}
+
+/**
+ * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
+ * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
+ */
+Buffer.prototype.toArrayBuffer = function () {
+  if (typeof Uint8Array !== 'undefined') {
+    if (Buffer.TYPED_ARRAY_SUPPORT) {
+      return (new Buffer(this)).buffer
+    } else {
+      var buf = new Uint8Array(this.length)
+      for (var i = 0, len = buf.length; i < len; i += 1) {
+        buf[i] = this[i]
+      }
+      return buf.buffer
+    }
+  } else {
+    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
+  }
+}
+
+// HELPER FUNCTIONS
+// ================
+
+var BP = Buffer.prototype
+
+/**
+ * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
+ */
+Buffer._augment = function (arr) {
+  arr.constructor = Buffer
+  arr._isBuffer = true
+
+  // save reference to original Uint8Array get/set methods before overwriting
+  arr._get = arr.get
+  arr._set = arr.set
+
+  // deprecated, will be removed in node 0.13+
+  arr.get = BP.get
+  arr.set = BP.set
+
+  arr.write = BP.write
+  arr.toString = BP.toString
+  arr.toLocaleString = BP.toString
+  arr.toJSON = BP.toJSON
+  arr.equals = BP.equals
+  arr.compare = BP.compare
+  arr.copy = BP.copy
+  arr.slice = BP.slice
+  arr.readUIntLE = BP.readUIntLE
+  arr.readUIntBE = BP.readUIntBE
+  arr.readUInt8 = BP.readUInt8
+  arr.readUInt16LE = BP.readUInt16LE
+  arr.readUInt16BE = BP.readUInt16BE
+  arr.readUInt32LE = BP.readUInt32LE
+  arr.readUInt32BE = BP.readUInt32BE
+  arr.readIntLE = BP.readIntLE
+  arr.readIntBE = BP.readIntBE
+  arr.readInt8 = BP.readInt8
+  arr.readInt16LE = BP.readInt16LE
+  arr.readInt16BE = BP.readInt16BE
+  arr.readInt32LE = BP.readInt32LE
+  arr.readInt32BE = BP.readInt32BE
+  arr.readFloatLE = BP.readFloatLE
+  arr.readFloatBE = BP.readFloatBE
+  arr.readDoubleLE = BP.readDoubleLE
+  arr.readDoubleBE = BP.readDoubleBE
+  arr.writeUInt8 = BP.writeUInt8
+  arr.writeUIntLE = BP.writeUIntLE
+  arr.writeUIntBE = BP.writeUIntBE
+  arr.writeUInt16LE = BP.writeUInt16LE
+  arr.writeUInt16BE = BP.writeUInt16BE
+  arr.writeUInt32LE = BP.writeUInt32LE
+  arr.writeUInt32BE = BP.writeUInt32BE
+  arr.writeIntLE = BP.writeIntLE
+  arr.writeIntBE = BP.writeIntBE
+  arr.writeInt8 = BP.writeInt8
+  arr.writeInt16LE = BP.writeInt16LE
+  arr.writeInt16BE = BP.writeInt16BE
+  arr.writeInt32LE = BP.writeInt32LE
+  arr.writeInt32BE = BP.writeInt32BE
+  arr.writeFloatLE = BP.writeFloatLE
+  arr.writeFloatBE = BP.writeFloatBE
+  arr.writeDoubleLE = BP.writeDoubleLE
+  arr.writeDoubleBE = BP.writeDoubleBE
+  arr.fill = BP.fill
+  arr.inspect = BP.inspect
+  arr.toArrayBuffer = BP.toArrayBuffer
+
+  return arr
+}
+
+var INVALID_BASE64_RE = /[^+\/0-9A-z\-]/g
+
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
+
+function stringtrim (str) {
+  if (str.trim) return str.trim()
+  return str.replace(/^\s+|\s+$/g, '')
+}
+
+function isArrayish (subject) {
+  return isArray(subject) || Buffer.isBuffer(subject) ||
+      subject && typeof subject === 'object' &&
+      typeof subject.length === 'number'
+}
+
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
+
+function utf8ToBytes(string, units) {
+  var codePoint, length = string.length
+  var leadSurrogate = null
+  units = units || Infinity
+  var bytes = []
+  var i = 0
+
+  for (; i<length; i++) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+
+      // last char was a lead
+      if (leadSurrogate) {
+
+        // 2 leads in a row
+        if (codePoint < 0xDC00) {
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          leadSurrogate = codePoint
+          continue
+        }
+
+        // valid surrogate pair
+        else {
+          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
+          leadSurrogate = null
+        }
+      }
+
+      // no lead yet
+      else {
+
+        // unexpected trail
+        if (codePoint > 0xDBFF) {
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        }
+
+        // unpaired lead
+        else if (i + 1 === length) {
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        }
+
+        // valid lead
+        else {
+          leadSurrogate = codePoint
+          continue
+        }
+      }
+    }
+
+    // valid bmp char, but last char was a lead
+    else if (leadSurrogate) {
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+      leadSurrogate = null
+    }
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    }
+    else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      );
+    }
+    else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      );
+    }
+    else if (codePoint < 0x200000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      );
+    }
+    else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
+
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
+  }
+
+  return byteArray
+}
+
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length, unitSize) {
+  if (unitSize) length -= length % unitSize;
+  for (var i = 0; i < length; i++) {
+    if ((i + offset >= dst.length) || (i >= src.length))
+      break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
+
+function decodeUtf8Char (str) {
+  try {
+    return decodeURIComponent(str)
+  } catch (err) {
+    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
+  }
+}
+
+},{"base64-js":67,"ieee754":68,"is-array":69}],67:[function(require,module,exports){
+var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+
+;(function (exports) {
+	'use strict';
+
+  var Arr = (typeof Uint8Array !== 'undefined')
+    ? Uint8Array
+    : Array
+
+	var PLUS   = '+'.charCodeAt(0)
+	var SLASH  = '/'.charCodeAt(0)
+	var NUMBER = '0'.charCodeAt(0)
+	var LOWER  = 'a'.charCodeAt(0)
+	var UPPER  = 'A'.charCodeAt(0)
+	var PLUS_URL_SAFE = '-'.charCodeAt(0)
+	var SLASH_URL_SAFE = '_'.charCodeAt(0)
+
+	function decode (elt) {
+		var code = elt.charCodeAt(0)
+		if (code === PLUS ||
+		    code === PLUS_URL_SAFE)
+			return 62 // '+'
+		if (code === SLASH ||
+		    code === SLASH_URL_SAFE)
+			return 63 // '/'
+		if (code < NUMBER)
+			return -1 //no match
+		if (code < NUMBER + 10)
+			return code - NUMBER + 26 + 26
+		if (code < UPPER + 26)
+			return code - UPPER
+		if (code < LOWER + 26)
+			return code - LOWER + 26
+	}
+
+	function b64ToByteArray (b64) {
+		var i, j, l, tmp, placeHolders, arr
+
+		if (b64.length % 4 > 0) {
+			throw new Error('Invalid string. Length must be a multiple of 4')
+		}
+
+		// the number of equal signs (place holders)
+		// if there are two placeholders, than the two characters before it
+		// represent one byte
+		// if there is only one, then the three characters before it represent 2 bytes
+		// this is just a cheap hack to not do indexOf twice
+		var len = b64.length
+		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
+
+		// base64 is 4/3 + up to two characters of the original data
+		arr = new Arr(b64.length * 3 / 4 - placeHolders)
+
+		// if there are placeholders, only get up to the last complete 4 chars
+		l = placeHolders > 0 ? b64.length - 4 : b64.length
+
+		var L = 0
+
+		function push (v) {
+			arr[L++] = v
+		}
+
+		for (i = 0, j = 0; i < l; i += 4, j += 3) {
+			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
+			push((tmp & 0xFF0000) >> 16)
+			push((tmp & 0xFF00) >> 8)
+			push(tmp & 0xFF)
+		}
+
+		if (placeHolders === 2) {
+			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
+			push(tmp & 0xFF)
+		} else if (placeHolders === 1) {
+			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
+			push((tmp >> 8) & 0xFF)
+			push(tmp & 0xFF)
+		}
+
+		return arr
+	}
+
+	function uint8ToBase64 (uint8) {
+		var i,
+			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
+			output = "",
+			temp, length
+
+		function encode (num) {
+			return lookup.charAt(num)
+		}
+
+		function tripletToBase64 (num) {
+			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
+		}
+
+		// go through the array every three bytes, we'll deal with trailing stuff later
+		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
+			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+			output += tripletToBase64(temp)
+		}
+
+		// pad the end with zeros, but make sure to not forget the extra bytes
+		switch (extraBytes) {
+			case 1:
+				temp = uint8[uint8.length - 1]
+				output += encode(temp >> 2)
+				output += encode((temp << 4) & 0x3F)
+				output += '=='
+				break
+			case 2:
+				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
+				output += encode(temp >> 10)
+				output += encode((temp >> 4) & 0x3F)
+				output += encode((temp << 2) & 0x3F)
+				output += '='
+				break
+		}
+
+		return output
+	}
+
+	exports.toByteArray = b64ToByteArray
+	exports.fromByteArray = uint8ToBase64
+}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
+
+},{}],68:[function(require,module,exports){
+exports.read = function(buffer, offset, isLE, mLen, nBytes) {
+  var e, m,
+      eLen = nBytes * 8 - mLen - 1,
+      eMax = (1 << eLen) - 1,
+      eBias = eMax >> 1,
+      nBits = -7,
+      i = isLE ? (nBytes - 1) : 0,
+      d = isLE ? -1 : 1,
+      s = buffer[offset + i];
+
+  i += d;
+
+  e = s & ((1 << (-nBits)) - 1);
+  s >>= (-nBits);
+  nBits += eLen;
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);
+
+  m = e & ((1 << (-nBits)) - 1);
+  e >>= (-nBits);
+  nBits += mLen;
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);
+
+  if (e === 0) {
+    e = 1 - eBias;
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity);
+  } else {
+    m = m + Math.pow(2, mLen);
+    e = e - eBias;
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
+};
+
+exports.write = function(buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c,
+      eLen = nBytes * 8 - mLen - 1,
+      eMax = (1 << eLen) - 1,
+      eBias = eMax >> 1,
+      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
+      i = isLE ? 0 : (nBytes - 1),
+      d = isLE ? 1 : -1,
+      s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;
+
+  value = Math.abs(value);
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0;
+    e = eMax;
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2);
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--;
+      c *= 2;
+    }
+    if (e + eBias >= 1) {
+      value += rt / c;
+    } else {
+      value += rt * Math.pow(2, 1 - eBias);
+    }
+    if (value * c >= 2) {
+      e++;
+      c /= 2;
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0;
+      e = eMax;
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen);
+      e = e + eBias;
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
+      e = 0;
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);
+
+  e = (e << mLen) | m;
+  eLen += mLen;
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);
+
+  buffer[offset + i - d] |= s * 128;
+};
+
+},{}],69:[function(require,module,exports){
+
+/**
+ * isArray
+ */
+
+var isArray = Array.isArray;
+
+/**
+ * toString
+ */
+
+var str = Object.prototype.toString;
+
+/**
+ * Whether or not the given `val`
+ * is an array.
+ *
+ * example:
+ *
+ *        isArray([]);
+ *        // > true
+ *        isArray(arguments);
+ *        // > false
+ *        isArray('');
+ *        // > false
+ *
+ * @param {mixed} val
+ * @return {bool}
+ */
+
+module.exports = isArray || function (val) {
+  return !! val && '[object Array]' == str.call(val);
+};
+
+},{}],70:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+function EventEmitter() {
+  this._events = this._events || {};
+  this._maxListeners = this._maxListeners || undefined;
+}
+module.exports = EventEmitter;
+
+// Backwards-compat with node 0.10.x
+EventEmitter.EventEmitter = EventEmitter;
+
+EventEmitter.prototype._events = undefined;
+EventEmitter.prototype._maxListeners = undefined;
+
+// By default EventEmitters will print a warning if more than 10 listeners are
+// added to it. This is a useful default which helps finding memory leaks.
+EventEmitter.defaultMaxListeners = 10;
+
+// Obviously not all Emitters should be limited to 10. This function allows
+// that to be increased. Set to zero for unlimited.
+EventEmitter.prototype.setMaxListeners = function(n) {
+  if (!isNumber(n) || n < 0 || isNaN(n))
+    throw TypeError('n must be a positive number');
+  this._maxListeners = n;
+  return this;
+};
+
+EventEmitter.prototype.emit = function(type) {
+  var er, handler, len, args, i, listeners;
+
+  if (!this._events)
+    this._events = {};
+
+  // If there is no 'error' event listener then throw.
+  if (type === 'error') {
+    if (!this._events.error ||
+        (isObject(this._events.error) && !this._events.error.length)) {
+      er = arguments[1];
+      if (er instanceof Error) {
+        throw er; // Unhandled 'error' event
+      }
+      throw TypeError('Uncaught, unspecified "error" event.');
+    }
+  }
+
+  handler = this._events[type];
+
+  if (isUndefined(handler))
+    return false;
+
+  if (isFunction(handler)) {
+    switch (arguments.length) {
+      // fast cases
+      case 1:
+        handler.call(this);
+        break;
+      case 2:
+        handler.call(this, arguments[1]);
+        break;
+      case 3:
+        handler.call(this, arguments[1], arguments[2]);
+        break;
+      // slower
+      default:
+        len = arguments.length;
+        args = new Array(len - 1);
+        for (i = 1; i < len; i++)
+          args[i - 1] = arguments[i];
+        handler.apply(this, args);
+    }
+  } else if (isObject(handler)) {
+    len = arguments.length;
+    args = new Array(len - 1);
+    for (i = 1; i < len; i++)
+      args[i - 1] = arguments[i];
+
+    listeners = handler.slice();
+    len = listeners.length;
+    for (i = 0; i < len; i++)
+      listeners[i].apply(this, args);
+  }
+
+  return true;
+};
+
+EventEmitter.prototype.addListener = function(type, listener) {
+  var m;
+
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  if (!this._events)
+    this._events = {};
+
+  // To avoid recursion in the case that type === "newListener"! Before
+  // adding it to the listeners, first emit "newListener".
+  if (this._events.newListener)
+    this.emit('newListener', type,
+              isFunction(listener.listener) ?
+              listener.listener : listener);
+
+  if (!this._events[type])
+    // Optimize the case of one listener. Don't need the extra array object.
+    this._events[type] = listener;
+  else if (isObject(this._events[type]))
+    // If we've already got an array, just append.
+    this._events[type].push(listener);
+  else
+    // Adding the second element, need to change to array.
+    this._events[type] = [this._events[type], listener];
+
+  // Check for listener leak
+  if (isObject(this._events[type]) && !this._events[type].warned) {
+    var m;
+    if (!isUndefined(this._maxListeners)) {
+      m = this._maxListeners;
+    } else {
+      m = EventEmitter.defaultMaxListeners;
+    }
+
+    if (m && m > 0 && this._events[type].length > m) {
+      this._events[type].warned = true;
+      console.error('(node) warning: possible EventEmitter memory ' +
+                    'leak detected. %d listeners added. ' +
+                    'Use emitter.setMaxListeners() to increase limit.',
+                    this._events[type].length);
+      if (typeof console.trace === 'function') {
+        // not supported in IE 10
+        console.trace();
+      }
+    }
+  }
+
+  return this;
+};
+
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+
+EventEmitter.prototype.once = function(type, listener) {
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  var fired = false;
+
+  function g() {
+    this.removeListener(type, g);
+
+    if (!fired) {
+      fired = true;
+      listener.apply(this, arguments);
+    }
+  }
+
+  g.listener = listener;
+  this.on(type, g);
+
+  return this;
+};
+
+// emits a 'removeListener' event iff the listener was removed
+EventEmitter.prototype.removeListener = function(type, listener) {
+  var list, position, length, i;
+
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  if (!this._events || !this._events[type])
+    return this;
+
+  list = this._events[type];
+  length = list.length;
+  position = -1;
+
+  if (list === listener ||
+      (isFunction(list.listener) && list.listener === listener)) {
+    delete this._events[type];
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+
+  } else if (isObject(list)) {
+    for (i = length; i-- > 0;) {
+      if (list[i] === listener ||
+          (list[i].listener && list[i].listener === listener)) {
+        position = i;
+        break;
+      }
+    }
+
+    if (position < 0)
+      return this;
+
+    if (list.length === 1) {
+      list.length = 0;
+      delete this._events[type];
+    } else {
+      list.splice(position, 1);
+    }
+
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+  }
+
+  return this;
+};
+
+EventEmitter.prototype.removeAllListeners = function(type) {
+  var key, listeners;
+
+  if (!this._events)
+    return this;
+
+  // not listening for removeListener, no need to emit
+  if (!this._events.removeListener) {
+    if (arguments.length === 0)
+      this._events = {};
+    else if (this._events[type])
+      delete this._events[type];
+    return this;
+  }
+
+  // emit removeListener for all listeners on all events
+  if (arguments.length === 0) {
+    for (key in this._events) {
+      if (key === 'removeListener') continue;
+      this.removeAllListeners(key);
+    }
+    this.removeAllListeners('removeListener');
+    this._events = {};
+    return this;
+  }
+
+  listeners = this._events[type];
+
+  if (isFunction(listeners)) {
+    this.removeListener(type, listeners);
+  } else {
+    // LIFO order
+    while (listeners.length)
+      this.removeListener(type, listeners[listeners.length - 1]);
+  }
+  delete this._events[type];
+
+  return this;
+};
+
+EventEmitter.prototype.listeners = function(type) {
+  var ret;
+  if (!this._events || !this._events[type])
+    ret = [];
+  else if (isFunction(this._events[type]))
+    ret = [this._events[type]];
+  else
+    ret = this._events[type].slice();
+  return ret;
+};
+
+EventEmitter.listenerCount = function(emitter, type) {
+  var ret;
+  if (!emitter._events || !emitter._events[type])
+    ret = 0;
+  else if (isFunction(emitter._events[type]))
+    ret = 1;
+  else
+    ret = emitter._events[type].length;
+  return ret;
+};
+
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+
+function isUndefined(arg) {
+  return arg === void 0;
+}
+
+},{}],71:[function(require,module,exports){
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
+      }
+    });
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
+  }
+}
+
+},{}],72:[function(require,module,exports){
+module.exports = Array.isArray || function (arr) {
+  return Object.prototype.toString.call(arr) == '[object Array]';
+};
+
+},{}],73:[function(require,module,exports){
+(function (process){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// resolves . and .. elements in a path array with directory names there
+// must be no slashes, empty elements, or device names (c:\) in the array
+// (so also no leading and trailing slashes - it does not distinguish
+// relative and absolute paths)
+function normalizeArray(parts, allowAboveRoot) {
+  // if the path tries to go above the root, `up` ends up > 0
+  var up = 0;
+  for (var i = parts.length - 1; i >= 0; i--) {
+    var last = parts[i];
+    if (last === '.') {
+      parts.splice(i, 1);
+    } else if (last === '..') {
+      parts.splice(i, 1);
+      up++;
+    } else if (up) {
+      parts.splice(i, 1);
+      up--;
+    }
+  }
+
+  // if the path is allowed to go above the root, restore leading ..s
+  if (allowAboveRoot) {
+    for (; up--; up) {
+      parts.unshift('..');
+    }
+  }
+
+  return parts;
+}
+
+// Split a filename into [root, dir, basename, ext], unix version
+// 'root' is just a slash, or nothing.
+var splitPathRe =
+    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+var splitPath = function(filename) {
+  return splitPathRe.exec(filename).slice(1);
+};
+
+// path.resolve([from ...], to)
+// posix version
+exports.resolve = function() {
+  var resolvedPath = '',
+      resolvedAbsolute = false;
+
+  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+    var path = (i >= 0) ? arguments[i] : process.cwd();
+
+    // Skip empty and invalid entries
+    if (typeof path !== 'string') {
+      throw new TypeError('Arguments to path.resolve must be strings');
+    } else if (!path) {
+      continue;
+    }
+
+    resolvedPath = path + '/' + resolvedPath;
+    resolvedAbsolute = path.charAt(0) === '/';
+  }
+
+  // At this point the path should be resolved to a full absolute path, but
+  // handle relative paths to be safe (might happen when process.cwd() fails)
+
+  // Normalize the path
+  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
+    return !!p;
+  }), !resolvedAbsolute).join('/');
+
+  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
+};
+
+// path.normalize(path)
+// posix version
+exports.normalize = function(path) {
+  var isAbsolute = exports.isAbsolute(path),
+      trailingSlash = substr(path, -1) === '/';
+
+  // Normalize the path
+  path = normalizeArray(filter(path.split('/'), function(p) {
+    return !!p;
+  }), !isAbsolute).join('/');
+
+  if (!path && !isAbsolute) {
+    path = '.';
+  }
+  if (path && trailingSlash) {
+    path += '/';
+  }
+
+  return (isAbsolute ? '/' : '') + path;
+};
+
+// posix version
+exports.isAbsolute = function(path) {
+  return path.charAt(0) === '/';
+};
+
+// posix version
+exports.join = function() {
+  var paths = Array.prototype.slice.call(arguments, 0);
+  return exports.normalize(filter(paths, function(p, index) {
+    if (typeof p !== 'string') {
+      throw new TypeError('Arguments to path.join must be strings');
+    }
+    return p;
+  }).join('/'));
+};
+
+
+// path.relative(from, to)
+// posix version
+exports.relative = function(from, to) {
+  from = exports.resolve(from).substr(1);
+  to = exports.resolve(to).substr(1);
+
+  function trim(arr) {
+    var start = 0;
+    for (; start < arr.length; start++) {
+      if (arr[start] !== '') break;
+    }
+
+    var end = arr.length - 1;
+    for (; end >= 0; end--) {
+      if (arr[end] !== '') break;
+    }
+
+    if (start > end) return [];
+    return arr.slice(start, end - start + 1);
+  }
+
+  var fromParts = trim(from.split('/'));
+  var toParts = trim(to.split('/'));
+
+  var length = Math.min(fromParts.length, toParts.length);
+  var samePartsLength = length;
+  for (var i = 0; i < length; i++) {
+    if (fromParts[i] !== toParts[i]) {
+      samePartsLength = i;
+      break;
+    }
+  }
+
+  var outputParts = [];
+  for (var i = samePartsLength; i < fromParts.length; i++) {
+    outputParts.push('..');
+  }
+
+  outputParts = outputParts.concat(toParts.slice(samePartsLength));
+
+  return outputParts.join('/');
+};
+
+exports.sep = '/';
+exports.delimiter = ':';
+
+exports.dirname = function(path) {
+  var result = splitPath(path),
+      root = result[0],
+      dir = result[1];
+
+  if (!root && !dir) {
+    // No dirname whatsoever
+    return '.';
+  }
+
+  if (dir) {
+    // It has a dirname, strip trailing slash
+    dir = dir.substr(0, dir.length - 1);
+  }
+
+  return root + dir;
+};
+
+
+exports.basename = function(path, ext) {
+  var f = splitPath(path)[2];
+  // TODO: make this comparison case-insensitive on windows?
+  if (ext && f.substr(-1 * ext.length) === ext) {
+    f = f.substr(0, f.length - ext.length);
+  }
+  return f;
+};
+
+
+exports.extname = function(path) {
+  return splitPath(path)[3];
+};
+
+function filter (xs, f) {
+    if (xs.filter) return xs.filter(f);
+    var res = [];
+    for (var i = 0; i < xs.length; i++) {
+        if (f(xs[i], i, xs)) res.push(xs[i]);
+    }
+    return res;
+}
+
+// String.prototype.substr - negative index don't work in IE8
+var substr = 'ab'.substr(-1) === 'b'
+    ? function (str, start, len) { return str.substr(start, len) }
+    : function (str, start, len) {
+        if (start < 0) start = str.length + start;
+        return str.substr(start, len);
+    }
+;
+
+}).call(this,require('_process'))
+},{"_process":74}],74:[function(require,module,exports){
+// shim for using process in browser
+
+var process = module.exports = {};
+var queue = [];
+var draining = false;
+
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    draining = true;
+    var currentQueue;
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        var i = -1;
+        while (++i < len) {
+            currentQueue[i]();
+        }
+        len = queue.length;
+    }
+    draining = false;
+}
+process.nextTick = function (fun) {
+    queue.push(fun);
+    if (!draining) {
+        setTimeout(drainQueue, 0);
+    }
+};
+
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+
+function noop() {}
+
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
+
+// TODO(shtylman)
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
+
+},{}],75:[function(require,module,exports){
+module.exports = require("./lib/_stream_duplex.js")
+
+},{"./lib/_stream_duplex.js":76}],76:[function(require,module,exports){
+(function (process){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// a duplex stream is just a stream that is both readable and writable.
+// Since JS doesn't have multiple prototypal inheritance, this class
+// prototypally inherits from Readable, and then parasitically from
+// Writable.
+
+module.exports = Duplex;
+
+/*<replacement>*/
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+  for (var key in obj) keys.push(key);
+  return keys;
+}
+/*</replacement>*/
+
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+var Readable = require('./_stream_readable');
+var Writable = require('./_stream_writable');
+
+util.inherits(Duplex, Readable);
+
+forEach(objectKeys(Writable.prototype), function(method) {
+  if (!Duplex.prototype[method])
+    Duplex.prototype[method] = Writable.prototype[method];
+});
+
+function Duplex(options) {
+  if (!(this instanceof Duplex))
+    return new Duplex(options);
+
+  Readable.call(this, options);
+  Writable.call(this, options);
+
+  if (options && options.readable === false)
+    this.readable = false;
+
+  if (options && options.writable === false)
+    this.writable = false;
+
+  this.allowHalfOpen = true;
+  if (options && options.allowHalfOpen === false)
+    this.allowHalfOpen = false;
+
+  this.once('end', onend);
+}
+
+// the no-half-open enforcer
+function onend() {
+  // if we allow half-open state, or if the writable side ended,
+  // then we're ok.
+  if (this.allowHalfOpen || this._writableState.ended)
+    return;
+
+  // no more data can be written.
+  // But allow more writes to happen in this tick.
+  process.nextTick(this.end.bind(this));
+}
+
+function forEach (xs, f) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    f(xs[i], i);
+  }
+}
+
+}).call(this,require('_process'))
+},{"./_stream_readable":78,"./_stream_writable":80,"_process":74,"core-util-is":81,"inherits":71}],77:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// a passthrough stream.
+// basically just the most minimal sort of Transform stream.
+// Every written chunk gets output as-is.
+
+module.exports = PassThrough;
+
+var Transform = require('./_stream_transform');
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+util.inherits(PassThrough, Transform);
+
+function PassThrough(options) {
+  if (!(this instanceof PassThrough))
+    return new PassThrough(options);
+
+  Transform.call(this, options);
+}
+
+PassThrough.prototype._transform = function(chunk, encoding, cb) {
+  cb(null, chunk);
+};
+
+},{"./_stream_transform":79,"core-util-is":81,"inherits":71}],78:[function(require,module,exports){
+(function (process){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+module.exports = Readable;
+
+/*<replacement>*/
+var isArray = require('isarray');
+/*</replacement>*/
+
+
+/*<replacement>*/
+var Buffer = require('buffer').Buffer;
+/*</replacement>*/
+
+Readable.ReadableState = ReadableState;
+
+var EE = require('events').EventEmitter;
+
+/*<replacement>*/
+if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
+  return emitter.listeners(type).length;
+};
+/*</replacement>*/
+
+var Stream = require('stream');
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+var StringDecoder;
+
+util.inherits(Readable, Stream);
+
+function ReadableState(options, stream) {
+  options = options || {};
+
+  // the point at which it stops calling _read() to fill the buffer
+  // Note: 0 is a valid value, means "don't call _read preemptively ever"
+  var hwm = options.highWaterMark;
+  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;
+
+  // cast to ints.
+  this.highWaterMark = ~~this.highWaterMark;
+
+  this.buffer = [];
+  this.length = 0;
+  this.pipes = null;
+  this.pipesCount = 0;
+  this.flowing = false;
+  this.ended = false;
+  this.endEmitted = false;
+  this.reading = false;
+
+  // In streams that never have any data, and do push(null) right away,
+  // the consumer can miss the 'end' event if they do some I/O before
+  // consuming the stream.  So, we don't emit('end') until some reading
+  // happens.
+  this.calledRead = false;
+
+  // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, becuase any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+  this.sync = true;
+
+  // whenever we return null, then we set a flag to say
+  // that we're awaiting a 'readable' event emission.
+  this.needReadable = false;
+  this.emittedReadable = false;
+  this.readableListening = false;
+
+
+  // object stream flag. Used to make read(n) ignore n and to
+  // make all the buffer merging and length checks go away
+  this.objectMode = !!options.objectMode;
+
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
+
+  // when piping, we only care about 'readable' events that happen
+  // after read()ing all the bytes and not getting any pushback.
+  this.ranOut = false;
+
+  // the number of writers that are awaiting a drain event in .pipe()s
+  this.awaitDrain = 0;
+
+  // if true, a maybeReadMore has been scheduled
+  this.readingMore = false;
+
+  this.decoder = null;
+  this.encoding = null;
+  if (options.encoding) {
+    if (!StringDecoder)
+      StringDecoder = require('string_decoder/').StringDecoder;
+    this.decoder = new StringDecoder(options.encoding);
+    this.encoding = options.encoding;
+  }
+}
+
+function Readable(options) {
+  if (!(this instanceof Readable))
+    return new Readable(options);
+
+  this._readableState = new ReadableState(options, this);
+
+  // legacy
+  this.readable = true;
+
+  Stream.call(this);
+}
+
+// Manually shove something into the read() buffer.
+// This returns true if the highWaterMark has not been hit yet,
+// similar to how Writable.write() returns true if you should
+// write() some more.
+Readable.prototype.push = function(chunk, encoding) {
+  var state = this._readableState;
+
+  if (typeof chunk === 'string' && !state.objectMode) {
+    encoding = encoding || state.defaultEncoding;
+    if (encoding !== state.encoding) {
+      chunk = new Buffer(chunk, encoding);
+      encoding = '';
+    }
+  }
+
+  return readableAddChunk(this, state, chunk, encoding, false);
+};
+
+// Unshift should *always* be something directly out of read()
+Readable.prototype.unshift = function(chunk) {
+  var state = this._readableState;
+  return readableAddChunk(this, state, chunk, '', true);
+};
+
+function readableAddChunk(stream, state, chunk, encoding, addToFront) {
+  var er = chunkInvalid(state, chunk);
+  if (er) {
+    stream.emit('error', er);
+  } else if (chunk === null || chunk === undefined) {
+    state.reading = false;
+    if (!state.ended)
+      onEofChunk(stream, state);
+  } else if (state.objectMode || chunk && chunk.length > 0) {
+    if (state.ended && !addToFront) {
+      var e = new Error('stream.push() after EOF');
+      stream.emit('error', e);
+    } else if (state.endEmitted && addToFront) {
+      var e = new Error('stream.unshift() after end event');
+      stream.emit('error', e);
+    } else {
+      if (state.decoder && !addToFront && !encoding)
+        chunk = state.decoder.write(chunk);
+
+      // update the buffer info.
+      state.length += state.objectMode ? 1 : chunk.length;
+      if (addToFront) {
+        state.buffer.unshift(chunk);
+      } else {
+        state.reading = false;
+        state.buffer.push(chunk);
+      }
+
+      if (state.needReadable)
+        emitReadable(stream);
+
+      maybeReadMore(stream, state);
+    }
+  } else if (!addToFront) {
+    state.reading = false;
+  }
+
+  return needMoreData(state);
+}
+
+
+
+// if it's past the high water mark, we can push in some more.
+// Also, if we have no data yet, we can stand some
+// more bytes.  This is to work around cases where hwm=0,
+// such as the repl.  Also, if the push() triggered a
+// readable event, and the user called read(largeNumber) such that
+// needReadable was set, then we ought to push more, so that another
+// 'readable' event will be triggered.
+function needMoreData(state) {
+  return !state.ended &&
+         (state.needReadable ||
+          state.length < state.highWaterMark ||
+          state.length === 0);
+}
+
+// backwards compatibility.
+Readable.prototype.setEncoding = function(enc) {
+  if (!StringDecoder)
+    StringDecoder = require('string_decoder/').StringDecoder;
+  this._readableState.decoder = new StringDecoder(enc);
+  this._readableState.encoding = enc;
+};
+
+// Don't raise the hwm > 128MB
+var MAX_HWM = 0x800000;
+function roundUpToNextPowerOf2(n) {
+  if (n >= MAX_HWM) {
+    n = MAX_HWM;
+  } else {
+    // Get the next highest power of 2
+    n--;
+    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
+    n++;
+  }
+  return n;
+}
+
+function howMuchToRead(n, state) {
+  if (state.length === 0 && state.ended)
+    return 0;
+
+  if (state.objectMode)
+    return n === 0 ? 0 : 1;
+
+  if (n === null || isNaN(n)) {
+    // only flow one buffer at a time
+    if (state.flowing && state.buffer.length)
+      return state.buffer[0].length;
+    else
+      return state.length;
+  }
+
+  if (n <= 0)
+    return 0;
+
+  // If we're asking for more than the target buffer level,
+  // then raise the water mark.  Bump up to the next highest
+  // power of 2, to prevent increasing it excessively in tiny
+  // amounts.
+  if (n > state.highWaterMark)
+    state.highWaterMark = roundUpToNextPowerOf2(n);
+
+  // don't have that much.  return null, unless we've ended.
+  if (n > state.length) {
+    if (!state.ended) {
+      state.needReadable = true;
+      return 0;
+    } else
+      return state.length;
+  }
+
+  return n;
+}
+
+// you can override either this method, or the async _read(n) below.
+Readable.prototype.read = function(n) {
+  var state = this._readableState;
+  state.calledRead = true;
+  var nOrig = n;
+  var ret;
+
+  if (typeof n !== 'number' || n > 0)
+    state.emittedReadable = false;
+
+  // if we're doing read(0) to trigger a readable event, but we
+  // already have a bunch of data in the buffer, then just trigger
+  // the 'readable' event and move on.
+  if (n === 0 &&
+      state.needReadable &&
+      (state.length >= state.highWaterMark || state.ended)) {
+    emitReadable(this);
+    return null;
+  }
+
+  n = howMuchToRead(n, state);
+
+  // if we've ended, and we're now clear, then finish it up.
+  if (n === 0 && state.ended) {
+    ret = null;
+
+    // In cases where the decoder did not receive enough data
+    // to produce a full chunk, then immediately received an
+    // EOF, state.buffer will contain [<Buffer >, <Buffer 00 ...>].
+    // howMuchToRead will see this and coerce the amount to
+    // read to zero (because it's looking at the length of the
+    // first <Buffer > in state.buffer), and we'll end up here.
+    //
+    // This can only happen via state.decoder -- no other venue
+    // exists for pushing a zero-length chunk into state.buffer
+    // and triggering this behavior. In this case, we return our
+    // remaining data and end the stream, if appropriate.
+    if (state.length > 0 && state.decoder) {
+      ret = fromList(n, state);
+      state.length -= ret.length;
+    }
+
+    if (state.length === 0)
+      endReadable(this);
+
+    return ret;
+  }
+
+  // All the actual chunk generation logic needs to be
+  // *below* the call to _read.  The reason is that in certain
+  // synthetic stream cases, such as passthrough streams, _read
+  // may be a completely synchronous operation which may change
+  // the state of the read buffer, providing enough data when
+  // before there was *not* enough.
+  //
+  // So, the steps are:
+  // 1. Figure out what the state of things will be after we do
+  // a read from the buffer.
+  //
+  // 2. If that resulting state will trigger a _read, then call _read.
+  // Note that this may be asynchronous, or synchronous.  Yes, it is
+  // deeply ugly to write APIs this way, but that still doesn't mean
+  // that the Readable class should behave improperly, as streams are
+  // designed to be sync/async agnostic.
+  // Take note if the _read call is sync or async (ie, if the read call
+  // has returned yet), so that we know whether or not it's safe to emit
+  // 'readable' etc.
+  //
+  // 3. Actually pull the requested chunks out of the buffer and return.
+
+  // if we need a readable event, then we need to do some reading.
+  var doRead = state.needReadable;
+
+  // if we currently have less than the highWaterMark, then also read some
+  if (state.length - n <= state.highWaterMark)
+    doRead = true;
+
+  // however, if we've ended, then there's no point, and if we're already
+  // reading, then it's unnecessary.
+  if (state.ended || state.reading)
+    doRead = false;
+
+  if (doRead) {
+    state.reading = true;
+    state.sync = true;
+    // if the length is currently zero, then we *need* a readable event.
+    if (state.length === 0)
+      state.needReadable = true;
+    // call internal read method
+    this._read(state.highWaterMark);
+    state.sync = false;
+  }
+
+  // If _read called its callback synchronously, then `reading`
+  // will be false, and we need to re-evaluate how much data we
+  // can return to the user.
+  if (doRead && !state.reading)
+    n = howMuchToRead(nOrig, state);
+
+  if (n > 0)
+    ret = fromList(n, state);
+  else
+    ret = null;
+
+  if (ret === null) {
+    state.needReadable = true;
+    n = 0;
+  }
+
+  state.length -= n;
+
+  // If we have nothing in the buffer, then we want to know
+  // as soon as we *do* get something into the buffer.
+  if (state.length === 0 && !state.ended)
+    state.needReadable = true;
+
+  // If we happened to read() exactly the remaining amount in the
+  // buffer, and the EOF has been seen at this point, then make sure
+  // that we emit 'end' on the very next tick.
+  if (state.ended && !state.endEmitted && state.length === 0)
+    endReadable(this);
+
+  return ret;
+};
+
+function chunkInvalid(state, chunk) {
+  var er = null;
+  if (!Buffer.isBuffer(chunk) &&
+      'string' !== typeof chunk &&
+      chunk !== null &&
+      chunk !== undefined &&
+      !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  return er;
+}
+
+
+function onEofChunk(stream, state) {
+  if (state.decoder && !state.ended) {
+    var chunk = state.decoder.end();
+    if (chunk && chunk.length) {
+      state.buffer.push(chunk);
+      state.length += state.objectMode ? 1 : chunk.length;
+    }
+  }
+  state.ended = true;
+
+  // if we've ended and we have some data left, then emit
+  // 'readable' now to make sure it gets picked up.
+  if (state.length > 0)
+    emitReadable(stream);
+  else
+    endReadable(stream);
+}
+
+// Don't emit readable right away in sync mode, because this can trigger
+// another read() call => stack overflow.  This way, it might trigger
+// a nextTick recursion warning, but that's not so bad.
+function emitReadable(stream) {
+  var state = stream._readableState;
+  state.needReadable = false;
+  if (state.emittedReadable)
+    return;
+
+  state.emittedReadable = true;
+  if (state.sync)
+    process.nextTick(function() {
+      emitReadable_(stream);
+    });
+  else
+    emitReadable_(stream);
+}
+
+function emitReadable_(stream) {
+  stream.emit('readable');
+}
+
+
+// at this point, the user has presumably seen the 'readable' event,
+// and called read() to consume some data.  that may have triggered
+// in turn another _read(n) call, in which case reading = true if
+// it's in progress.
+// However, if we're not ended, or reading, and the length < hwm,
+// then go ahead and try to read some more preemptively.
+function maybeReadMore(stream, state) {
+  if (!state.readingMore) {
+    state.readingMore = true;
+    process.nextTick(function() {
+      maybeReadMore_(stream, state);
+    });
+  }
+}
+
+function maybeReadMore_(stream, state) {
+  var len = state.length;
+  while (!state.reading && !state.flowing && !state.ended &&
+         state.length < state.highWaterMark) {
+    stream.read(0);
+    if (len === state.length)
+      // didn't get any data, stop spinning.
+      break;
+    else
+      len = state.length;
+  }
+  state.readingMore = false;
+}
+
+// abstract method.  to be overridden in specific implementation classes.
+// call cb(er, data) where data is <= n in length.
+// for virtual (non-string, non-buffer) streams, "length" is somewhat
+// arbitrary, and perhaps not very meaningful.
+Readable.prototype._read = function(n) {
+  this.emit('error', new Error('not implemented'));
+};
+
+Readable.prototype.pipe = function(dest, pipeOpts) {
+  var src = this;
+  var state = this._readableState;
+
+  switch (state.pipesCount) {
+    case 0:
+      state.pipes = dest;
+      break;
+    case 1:
+      state.pipes = [state.pipes, dest];
+      break;
+    default:
+      state.pipes.push(dest);
+      break;
+  }
+  state.pipesCount += 1;
+
+  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
+              dest !== process.stdout &&
+              dest !== process.stderr;
+
+  var endFn = doEnd ? onend : cleanup;
+  if (state.endEmitted)
+    process.nextTick(endFn);
+  else
+    src.once('end', endFn);
+
+  dest.on('unpipe', onunpipe);
+  function onunpipe(readable) {
+    if (readable !== src) return;
+    cleanup();
+  }
+
+  function onend() {
+    dest.end();
+  }
+
+  // when the dest drains, it reduces the awaitDrain counter
+  // on the source.  This would be more elegant with a .once()
+  // handler in flow(), but adding and removing repeatedly is
+  // too slow.
+  var ondrain = pipeOnDrain(src);
+  dest.on('drain', ondrain);
+
+  function cleanup() {
+    // cleanup event handlers once the pipe is broken
+    dest.removeListener('close', onclose);
+    dest.removeListener('finish', onfinish);
+    dest.removeListener('drain', ondrain);
+    dest.removeListener('error', onerror);
+    dest.removeListener('unpipe', onunpipe);
+    src.removeListener('end', onend);
+    src.removeListener('end', cleanup);
+
+    // if the reader is waiting for a drain event from this
+    // specific writer, then it would cause it to never start
+    // flowing again.
+    // So, if this is awaiting a drain, then we just call it now.
+    // If we don't know, then assume that we are waiting for one.
+    if (!dest._writableState || dest._writableState.needDrain)
+      ondrain();
+  }
+
+  // if the dest has an error, then stop piping into it.
+  // however, don't suppress the throwing behavior for this.
+  function onerror(er) {
+    unpipe();
+    dest.removeListener('error', onerror);
+    if (EE.listenerCount(dest, 'error') === 0)
+      dest.emit('error', er);
+  }
+  // This is a brutally ugly hack to make sure that our error handler
+  // is attached before any userland ones.  NEVER DO THIS.
+  if (!dest._events || !dest._events.error)
+    dest.on('error', onerror);
+  else if (isArray(dest._events.error))
+    dest._events.error.unshift(onerror);
+  else
+    dest._events.error = [onerror, dest._events.error];
+
+
+
+  // Both close and finish should trigger unpipe, but only once.
+  function onclose() {
+    dest.removeListener('finish', onfinish);
+    unpipe();
+  }
+  dest.once('close', onclose);
+  function onfinish() {
+    dest.removeListener('close', onclose);
+    unpipe();
+  }
+  dest.once('finish', onfinish);
+
+  function unpipe() {
+    src.unpipe(dest);
+  }
+
+  // tell the dest that it's being piped to
+  dest.emit('pipe', src);
+
+  // start the flow if it hasn't been started already.
+  if (!state.flowing) {
+    // the handler that waits for readable events after all
+    // the data gets sucked out in flow.
+    // This would be easier to follow with a .once() handler
+    // in flow(), but that is too slow.
+    this.on('readable', pipeOnReadable);
+
+    state.flowing = true;
+    process.nextTick(function() {
+      flow(src);
+    });
+  }
+
+  return dest;
+};
+
+function pipeOnDrain(src) {
+  return function() {
+    var dest = this;
+    var state = src._readableState;
+    state.awaitDrain--;
+    if (state.awaitDrain === 0)
+      flow(src);
+  };
+}
+
+function flow(src) {
+  var state = src._readableState;
+  var chunk;
+  state.awaitDrain = 0;
+
+  function write(dest, i, list) {
+    var written = dest.write(chunk);
+    if (false === written) {
+      state.awaitDrain++;
+    }
+  }
+
+  while (state.pipesCount && null !== (chunk = src.read())) {
+
+    if (state.pipesCount === 1)
+      write(state.pipes, 0, null);
+    else
+      forEach(state.pipes, write);
+
+    src.emit('data', chunk);
+
+    // if anyone needs a drain, then we have to wait for that.
+    if (state.awaitDrain > 0)
+      return;
+  }
+
+  // if every destination was unpiped, either before entering this
+  // function, or in the while loop, then stop flowing.
+  //
+  // NB: This is a pretty rare edge case.
+  if (state.pipesCount === 0) {
+    state.flowing = false;
+
+    // if there were data event listeners added, then switch to old mode.
+    if (EE.listenerCount(src, 'data') > 0)
+      emitDataEvents(src);
+    return;
+  }
+
+  // at this point, no one needed a drain, so we just ran out of data
+  // on the next readable event, start it over again.
+  state.ranOut = true;
+}
+
+function pipeOnReadable() {
+  if (this._readableState.ranOut) {
+    this._readableState.ranOut = false;
+    flow(this);
+  }
+}
+
+
+Readable.prototype.unpipe = function(dest) {
+  var state = this._readableState;
+
+  // if we're not piping anywhere, then do nothing.
+  if (state.pipesCount === 0)
+    return this;
+
+  // just one destination.  most common case.
+  if (state.pipesCount === 1) {
+    // passed in one, but it's not the right one.
+    if (dest && dest !== state.pipes)
+      return this;
+
+    if (!dest)
+      dest = state.pipes;
+
+    // got a match.
+    state.pipes = null;
+    state.pipesCount = 0;
+    this.removeListener('readable', pipeOnReadable);
+    state.flowing = false;
+    if (dest)
+      dest.emit('unpipe', this);
+    return this;
+  }
+
+  // slow case. multiple pipe destinations.
+
+  if (!dest) {
+    // remove all.
+    var dests = state.pipes;
+    var len = state.pipesCount;
+    state.pipes = null;
+    state.pipesCount = 0;
+    this.removeListener('readable', pipeOnReadable);
+    state.flowing = false;
+
+    for (var i = 0; i < len; i++)
+      dests[i].emit('unpipe', this);
+    return this;
+  }
+
+  // try to find the right one.
+  var i = indexOf(state.pipes, dest);
+  if (i === -1)
+    return this;
+
+  state.pipes.splice(i, 1);
+  state.pipesCount -= 1;
+  if (state.pipesCount === 1)
+    state.pipes = state.pipes[0];
+
+  dest.emit('unpipe', this);
+
+  return this;
+};
+
+// set up data events if they are asked for
+// Ensure readable listeners eventually get something
+Readable.prototype.on = function(ev, fn) {
+  var res = Stream.prototype.on.call(this, ev, fn);
+
+  if (ev === 'data' && !this._readableState.flowing)
+    emitDataEvents(this);
+
+  if (ev === 'readable' && this.readable) {
+    var state = this._readableState;
+    if (!state.readableListening) {
+      state.readableListening = true;
+      state.emittedReadable = false;
+      state.needReadable = true;
+      if (!state.reading) {
+        this.read(0);
+      } else if (state.length) {
+        emitReadable(this, state);
+      }
+    }
+  }
+
+  return res;
+};
+Readable.prototype.addListener = Readable.prototype.on;
+
+// pause() and resume() are remnants of the legacy readable stream API
+// If the user uses them, then switch into old mode.
+Readable.prototype.resume = function() {
+  emitDataEvents(this);
+  this.read(0);
+  this.emit('resume');
+};
+
+Readable.prototype.pause = function() {
+  emitDataEvents(this, true);
+  this.emit('pause');
+};
+
+function emitDataEvents(stream, startPaused) {
+  var state = stream._readableState;
+
+  if (state.flowing) {
+    // https://github.com/isaacs/readable-stream/issues/16
+    throw new Error('Cannot switch to old mode now.');
+  }
+
+  var paused = startPaused || false;
+  var readable = false;
+
+  // convert to an old-style stream.
+  stream.readable = true;
+  stream.pipe = Stream.prototype.pipe;
+  stream.on = stream.addListener = Stream.prototype.on;
+
+  stream.on('readable', function() {
+    readable = true;
+
+    var c;
+    while (!paused && (null !== (c = stream.read())))
+      stream.emit('data', c);
+
+    if (c === null) {
+      readable = false;
+      stream._readableState.needReadable = true;
+    }
+  });
+
+  stream.pause = function() {
+    paused = true;
+    this.emit('pause');
+  };
+
+  stream.resume = function() {
+    paused = false;
+    if (readable)
+      process.nextTick(function() {
+        stream.emit('readable');
+      });
+    else
+      this.read(0);
+    this.emit('resume');
+  };
+
+  // now make it start, just in case it hadn't already.
+  stream.emit('readable');
+}
+
+// wrap an old-style stream as the async data source.
+// This is *not* part of the readable stream interface.
+// It is an ugly unfortunate mess of history.
+Readable.prototype.wrap = function(stream) {
+  var state = this._readableState;
+  var paused = false;
+
+  var self = this;
+  stream.on('end', function() {
+    if (state.decoder && !state.ended) {
+      var chunk = state.decoder.end();
+      if (chunk && chunk.length)
+        self.push(chunk);
+    }
+
+    self.push(null);
+  });
+
+  stream.on('data', function(chunk) {
+    if (state.decoder)
+      chunk = state.decoder.write(chunk);
+
+    // don't skip over falsy values in objectMode
+    //if (state.objectMode && util.isNullOrUndefined(chunk))
+    if (state.objectMode && (chunk === null || chunk === undefined))
+      return;
+    else if (!state.objectMode && (!chunk || !chunk.length))
+      return;
+
+    var ret = self.push(chunk);
+    if (!ret) {
+      paused = true;
+      stream.pause();
+    }
+  });
+
+  // proxy all the other methods.
+  // important when wrapping filters and duplexes.
+  for (var i in stream) {
+    if (typeof stream[i] === 'function' &&
+        typeof this[i] === 'undefined') {
+      this[i] = function(method) { return function() {
+        return stream[method].apply(stream, arguments);
+      }}(i);
+    }
+  }
+
+  // proxy certain important events.
+  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
+  forEach(events, function(ev) {
+    stream.on(ev, self.emit.bind(self, ev));
+  });
+
+  // when we try to consume some more bytes, simply unpause the
+  // underlying stream.
+  self._read = function(n) {
+    if (paused) {
+      paused = false;
+      stream.resume();
+    }
+  };
+
+  return self;
+};
+
+
+
+// exposed for testing purposes only.
+Readable._fromList = fromList;
+
+// Pluck off n bytes from an array of buffers.
+// Length is the combined lengths of all the buffers in the list.
+function fromList(n, state) {
+  var list = state.buffer;
+  var length = state.length;
+  var stringMode = !!state.decoder;
+  var objectMode = !!state.objectMode;
+  var ret;
+
+  // nothing in the list, definitely empty.
+  if (list.length === 0)
+    return null;
+
+  if (length === 0)
+    ret = null;
+  else if (objectMode)
+    ret = list.shift();
+  else if (!n || n >= length) {
+    // read it all, truncate the array.
+    if (stringMode)
+      ret = list.join('');
+    else
+      ret = Buffer.concat(list, length);
+    list.length = 0;
+  } else {
+    // read just some of it.
+    if (n < list[0].length) {
+      // just take a part of the first list item.
+      // slice is the same for buffers and strings.
+      var buf = list[0];
+      ret = buf.slice(0, n);
+      list[0] = buf.slice(n);
+    } else if (n === list[0].length) {
+      // first list is a perfect match
+      ret = list.shift();
+    } else {
+      // complex case.
+      // we have enough to cover it, but it spans past the first buffer.
+      if (stringMode)
+        ret = '';
+      else
+        ret = new Buffer(n);
+
+      var c = 0;
+      for (var i = 0, l = list.length; i < l && c < n; i++) {
+        var buf = list[0];
+        var cpy = Math.min(n - c, buf.length);
+
+        if (stringMode)
+          ret += buf.slice(0, cpy);
+        else
+          buf.copy(ret, c, 0, cpy);
+
+        if (cpy < buf.length)
+          list[0] = buf.slice(cpy);
+        else
+          list.shift();
+
+        c += cpy;
+      }
+    }
+  }
+
+  return ret;
+}
+
+function endReadable(stream) {
+  var state = stream._readableState;
+
+  // If we get here before consuming all the bytes, then that is a
+  // bug in node.  Should never happen.
+  if (state.length > 0)
+    throw new Error('endReadable called on non-empty stream');
+
+  if (!state.endEmitted && state.calledRead) {
+    state.ended = true;
+    process.nextTick(function() {
+      // Check that we didn't get one last unshift.
+      if (!state.endEmitted && state.length === 0) {
+        state.endEmitted = true;
+        stream.readable = false;
+        stream.emit('end');
+      }
+    });
+  }
+}
+
+function forEach (xs, f) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    f(xs[i], i);
+  }
+}
+
+function indexOf (xs, x) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    if (xs[i] === x) return i;
+  }
+  return -1;
+}
+
+}).call(this,require('_process'))
+},{"_process":74,"buffer":66,"core-util-is":81,"events":70,"inherits":71,"isarray":72,"stream":86,"string_decoder/":87}],79:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+// a transform stream is a readable/writable stream where you do
+// something with the data.  Sometimes it's called a "filter",
+// but that's not a great name for it, since that implies a thing where
+// some bits pass through, and others are simply ignored.  (That would
+// be a valid example of a transform, of course.)
+//
+// While the output is causally related to the input, it's not a
+// necessarily symmetric or synchronous transformation.  For example,
+// a zlib stream might take multiple plain-text writes(), and then
+// emit a single compressed chunk some time in the future.
+//
+// Here's how this works:
+//
+// The Transform stream has all the aspects of the readable and writable
+// stream classes.  When you write(chunk), that calls _write(chunk,cb)
+// internally, and returns false if there's a lot of pending writes
+// buffered up.  When you call read(), that calls _read(n) until
+// there's enough pending readable data buffered up.
+//
+// In a transform stream, the written data is placed in a buffer.  When
+// _read(n) is called, it transforms the queued up data, calling the
+// buffered _write cb's as it consumes chunks.  If consuming a single
+// written chunk would result in multiple output chunks, then the first
+// outputted bit calls the readcb, and subsequent chunks just go into
+// the read buffer, and will cause it to emit 'readable' if necessary.
+//
+// This way, back-pressure is actually determined by the reading side,
+// since _read has to be called to start processing a new chunk.  However,
+// a pathological inflate type of transform can cause excessive buffering
+// here.  For example, imagine a stream where every byte of input is
+// interpreted as an integer from 0-255, and then results in that many
+// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
+// 1kb of data being output.  In this case, you could write a very small
+// amount of input, and end up with a very large amount of output.  In
+// such a pathological inflating mechanism, there'd be no way to tell
+// the system to stop doing the transform.  A single 4MB write could
+// cause the system to run out of memory.
+//
+// However, even in such a pathological case, only a single written chunk
+// would be consumed, and then the rest would wait (un-transformed) until
+// the results of the previous transformed chunk were consumed.
+
+module.exports = Transform;
+
+var Duplex = require('./_stream_duplex');
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+util.inherits(Transform, Duplex);
+
+
+function TransformState(options, stream) {
+  this.afterTransform = function(er, data) {
+    return afterTransform(stream, er, data);
+  };
+
+  this.needTransform = false;
+  this.transforming = false;
+  this.writecb = null;
+  this.writechunk = null;
+}
+
+function afterTransform(stream, er, data) {
+  var ts = stream._transformState;
+  ts.transforming = false;
+
+  var cb = ts.writecb;
+
+  if (!cb)
+    return stream.emit('error', new Error('no writecb in Transform class'));
+
+  ts.writechunk = null;
+  ts.writecb = null;
+
+  if (data !== null && data !== undefined)
+    stream.push(data);
+
+  if (cb)
+    cb(er);
+
+  var rs = stream._readableState;
+  rs.reading = false;
+  if (rs.needReadable || rs.length < rs.highWaterMark) {
+    stream._read(rs.highWaterMark);
+  }
+}
+
+
+function Transform(options) {
+  if (!(this instanceof Transform))
+    return new Transform(options);
+
+  Duplex.call(this, options);
+
+  var ts = this._transformState = new TransformState(options, this);
+
+  // when the writable side finishes, then flush out anything remaining.
+  var stream = this;
+
+  // start out asking for a readable event once data is transformed.
+  this._readableState.needReadable = true;
+
+  // we have implemented the _read method, and done the other things
+  // that Readable wants before the first _read call, so unset the
+  // sync guard flag.
+  this._readableState.sync = false;
+
+  this.once('finish', function() {
+    if ('function' === typeof this._flush)
+      this._flush(function(er) {
+        done(stream, er);
+      });
+    else
+      done(stream);
+  });
+}
+
+Transform.prototype.push = function(chunk, encoding) {
+  this._transformState.needTransform = false;
+  return Duplex.prototype.push.call(this, chunk, encoding);
+};
+
+// This is the part where you do stuff!
+// override this function in implementation classes.
+// 'chunk' is an input chunk.
+//
+// Call `push(newChunk)` to pass along transformed output
+// to the readable side.  You may call 'push' zero or more times.
+//
+// Call `cb(err)` when you are done with this chunk.  If you pass
+// an error, then that'll put the hurt on the whole operation.  If you
+// never call cb(), then you'll never get another chunk.
+Transform.prototype._transform = function(chunk, encoding, cb) {
+  throw new Error('not implemented');
+};
+
+Transform.prototype._write = function(chunk, encoding, cb) {
+  var ts = this._transformState;
+  ts.writecb = cb;
+  ts.writechunk = chunk;
+  ts.writeencoding = encoding;
+  if (!ts.transforming) {
+    var rs = this._readableState;
+    if (ts.needTransform ||
+        rs.needReadable ||
+        rs.length < rs.highWaterMark)
+      this._read(rs.highWaterMark);
+  }
+};
+
+// Doesn't matter what the args are here.
+// _transform does all the work.
+// That we got here means that the readable side wants more data.
+Transform.prototype._read = function(n) {
+  var ts = this._transformState;
+
+  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
+    ts.transforming = true;
+    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
+  } else {
+    // mark that we need a transform, so that any data that comes in
+    // will get processed, now that we've asked for it.
+    ts.needTransform = true;
+  }
+};
+
+
+function done(stream, er) {
+  if (er)
+    return stream.emit('error', er);
+
+  // if there's nothing in the write buffer, then that means
+  // that nothing more will ever be provided
+  var ws = stream._writableState;
+  var rs = stream._readableState;
+  var ts = stream._transformState;
+
+  if (ws.length)
+    throw new Error('calling transform done when ws.length != 0');
+
+  if (ts.transforming)
+    throw new Error('calling transform done when still transforming');
+
+  return stream.push(null);
+}
+
+},{"./_stream_duplex":76,"core-util-is":81,"inherits":71}],80:[function(require,module,exports){
+(function (process){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// A bit simpler than readable streams.
+// Implement an async ._write(chunk, cb), and it'll handle all
+// the drain event emission and buffering.
+
+module.exports = Writable;
+
+/*<replacement>*/
+var Buffer = require('buffer').Buffer;
+/*</replacement>*/
+
+Writable.WritableState = WritableState;
+
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+var Stream = require('stream');
+
+util.inherits(Writable, Stream);
+
+function WriteReq(chunk, encoding, cb) {
+  this.chunk = chunk;
+  this.encoding = encoding;
+  this.callback = cb;
+}
+
+function WritableState(options, stream) {
+  options = options || {};
+
+  // the point at which write() starts returning false
+  // Note: 0 is a valid value, means that we always return false if
+  // the entire buffer is not flushed immediately on write()
+  var hwm = options.highWaterMark;
+  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;
+
+  // object stream flag to indicate whether or not this stream
+  // contains buffers or objects.
+  this.objectMode = !!options.objectMode;
+
+  // cast to ints.
+  this.highWaterMark = ~~this.highWaterMark;
+
+  this.needDrain = false;
+  // at the start of calling end()
+  this.ending = false;
+  // when end() has been called, and returned
+  this.ended = false;
+  // when 'finish' is emitted
+  this.finished = false;
+
+  // should we decode strings into buffers before passing to _write?
+  // this is here so that some node-core streams can optimize string
+  // handling at a lower level.
+  var noDecode = options.decodeStrings === false;
+  this.decodeStrings = !noDecode;
+
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
+
+  // not an actual buffer we keep track of, but a measurement
+  // of how much we're waiting to get pushed to some underlying
+  // socket or file.
+  this.length = 0;
+
+  // a flag to see when we're in the middle of a write.
+  this.writing = false;
+
+  // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, becuase any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+  this.sync = true;
+
+  // a flag to know if we're processing previously buffered items, which
+  // may call the _write() callback in the same tick, so that we don't
+  // end up in an overlapped onwrite situation.
+  this.bufferProcessing = false;
+
+  // the callback that's passed to _write(chunk,cb)
+  this.onwrite = function(er) {
+    onwrite(stream, er);
+  };
+
+  // the callback that the user supplies to write(chunk,encoding,cb)
+  this.writecb = null;
+
+  // the amount that is being written when _write is called.
+  this.writelen = 0;
+
+  this.buffer = [];
+
+  // True if the error was already emitted and should not be thrown again
+  this.errorEmitted = false;
+}
+
+function Writable(options) {
+  var Duplex = require('./_stream_duplex');
+
+  // Writable ctor is applied to Duplexes, though they're not
+  // instanceof Writable, they're instanceof Readable.
+  if (!(this instanceof Writable) && !(this instanceof Duplex))
+    return new Writable(options);
+
+  this._writableState = new WritableState(options, this);
+
+  // legacy.
+  this.writable = true;
+
+  Stream.call(this);
+}
+
+// Otherwise people can pipe Writable streams, which is just wrong.
+Writable.prototype.pipe = function() {
+  this.emit('error', new Error('Cannot pipe. Not readable.'));
+};
+
+
+function writeAfterEnd(stream, state, cb) {
+  var er = new Error('write after end');
+  // TODO: defer error events consistently everywhere, not just the cb
+  stream.emit('error', er);
+  process.nextTick(function() {
+    cb(er);
+  });
+}
+
+// If we get something that is not a buffer, string, null, or undefined,
+// and we're not in objectMode, then that's an error.
+// Otherwise stream chunks are all considered to be of length=1, and the
+// watermarks determine how many objects to keep in the buffer, rather than
+// how many bytes or characters.
+function validChunk(stream, state, chunk, cb) {
+  var valid = true;
+  if (!Buffer.isBuffer(chunk) &&
+      'string' !== typeof chunk &&
+      chunk !== null &&
+      chunk !== undefined &&
+      !state.objectMode) {
+    var er = new TypeError('Invalid non-string/buffer chunk');
+    stream.emit('error', er);
+    process.nextTick(function() {
+      cb(er);
+    });
+    valid = false;
+  }
+  return valid;
+}
+
+Writable.prototype.write = function(chunk, encoding, cb) {
+  var state = this._writableState;
+  var ret = false;
+
+  if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
+
+  if (Buffer.isBuffer(chunk))
+    encoding = 'buffer';
+  else if (!encoding)
+    encoding = state.defaultEncoding;
+
+  if (typeof cb !== 'function')
+    cb = function() {};
+
+  if (state.ended)
+    writeAfterEnd(this, state, cb);
+  else if (validChunk(this, state, chunk, cb))
+    ret = writeOrBuffer(this, state, chunk, encoding, cb);
+
+  return ret;
+};
+
+function decodeChunk(state, chunk, encoding) {
+  if (!state.objectMode &&
+      state.decodeStrings !== false &&
+      typeof chunk === 'string') {
+    chunk = new Buffer(chunk, encoding);
+  }
+  return chunk;
+}
+
+// if we're already writing something, then just put this
+// in the queue, and wait our turn.  Otherwise, call _write
+// If we return false, then we need a drain event, so set that flag.
+function writeOrBuffer(stream, state, chunk, encoding, cb) {
+  chunk = decodeChunk(state, chunk, encoding);
+  if (Buffer.isBuffer(chunk))
+    encoding = 'buffer';
+  var len = state.objectMode ? 1 : chunk.length;
+
+  state.length += len;
+
+  var ret = state.length < state.highWaterMark;
+  // we must ensure that previous needDrain will not be reset to false.
+  if (!ret)
+    state.needDrain = true;
+
+  if (state.writing)
+    state.buffer.push(new WriteReq(chunk, encoding, cb));
+  else
+    doWrite(stream, state, len, chunk, encoding, cb);
+
+  return ret;
+}
+
+function doWrite(stream, state, len, chunk, encoding, cb) {
+  state.writelen = len;
+  state.writecb = cb;
+  state.writing = true;
+  state.sync = true;
+  stream._write(chunk, encoding, state.onwrite);
+  state.sync = false;
+}
+
+function onwriteError(stream, state, sync, er, cb) {
+  if (sync)
+    process.nextTick(function() {
+      cb(er);
+    });
+  else
+    cb(er);
+
+  stream._writableState.errorEmitted = true;
+  stream.emit('error', er);
+}
+
+function onwriteStateUpdate(state) {
+  state.writing = false;
+  state.writecb = null;
+  state.length -= state.writelen;
+  state.writelen = 0;
+}
+
+function onwrite(stream, er) {
+  var state = stream._writableState;
+  var sync = state.sync;
+  var cb = state.writecb;
+
+  onwriteStateUpdate(state);
+
+  if (er)
+    onwriteError(stream, state, sync, er, cb);
+  else {
+    // Check if we're actually ready to finish, but don't emit yet
+    var finished = needFinish(stream, state);
+
+    if (!finished && !state.bufferProcessing && state.buffer.length)
+      clearBuffer(stream, state);
+
+    if (sync) {
+      process.nextTick(function() {
+        afterWrite(stream, state, finished, cb);
+      });
+    } else {
+      afterWrite(stream, state, finished, cb);
+    }
+  }
+}
+
+function afterWrite(stream, state, finished, cb) {
+  if (!finished)
+    onwriteDrain(stream, state);
+  cb();
+  if (finished)
+    finishMaybe(stream, state);
+}
+
+// Must force callback to be called on nextTick, so that we don't
+// emit 'drain' before the write() consumer gets the 'false' return
+// value, and has a chance to attach a 'drain' listener.
+function onwriteDrain(stream, state) {
+  if (state.length === 0 && state.needDrain) {
+    state.needDrain = false;
+    stream.emit('drain');
+  }
+}
+
+
+// if there's something in the buffer waiting, then process it
+function clearBuffer(stream, state) {
+  state.bufferProcessing = true;
+
+  for (var c = 0; c < state.buffer.length; c++) {
+    var entry = state.buffer[c];
+    var chunk = entry.chunk;
+    var encoding = entry.encoding;
+    var cb = entry.callback;
+    var len = state.objectMode ? 1 : chunk.length;
+
+    doWrite(stream, state, len, chunk, encoding, cb);
+
+    // if we didn't call the onwrite immediately, then
+    // it means that we need to wait until it does.
+    // also, that means that the chunk and cb are currently
+    // being processed, so move the buffer counter past them.
+    if (state.writing) {
+      c++;
+      break;
+    }
+  }
+
+  state.bufferProcessing = false;
+  if (c < state.buffer.length)
+    state.buffer = state.buffer.slice(c);
+  else
+    state.buffer.length = 0;
+}
+
+Writable.prototype._write = function(chunk, encoding, cb) {
+  cb(new Error('not implemented'));
+};
+
+Writable.prototype.end = function(chunk, encoding, cb) {
+  var state = this._writableState;
+
+  if (typeof chunk === 'function') {
+    cb = chunk;
+    chunk = null;
+    encoding = null;
+  } else if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
+
+  if (typeof chunk !== 'undefined' && chunk !== null)
+    this.write(chunk, encoding);
+
+  // ignore unnecessary end() calls.
+  if (!state.ending && !state.finished)
+    endWritable(this, state, cb);
+};
+
+
+function needFinish(stream, state) {
+  return (state.ending &&
+          state.length === 0 &&
+          !state.finished &&
+          !state.writing);
+}
+
+function finishMaybe(stream, state) {
+  var need = needFinish(stream, state);
+  if (need) {
+    state.finished = true;
+    stream.emit('finish');
+  }
+  return need;
+}
+
+function endWritable(stream, state, cb) {
+  state.ending = true;
+  finishMaybe(stream, state);
+  if (cb) {
+    if (state.finished)
+      process.nextTick(cb);
+    else
+      stream.once('finish', cb);
+  }
+  state.ended = true;
+}
+
+}).call(this,require('_process'))
+},{"./_stream_duplex":76,"_process":74,"buffer":66,"core-util-is":81,"inherits":71,"stream":86}],81:[function(require,module,exports){
+(function (Buffer){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// NOTE: These type checking functions intentionally don't use `instanceof`
+// because it is fragile and can be easily faked with `Object.create()`.
+function isArray(ar) {
+  return Array.isArray(ar);
+}
+exports.isArray = isArray;
+
+function isBoolean(arg) {
+  return typeof arg === 'boolean';
+}
+exports.isBoolean = isBoolean;
+
+function isNull(arg) {
+  return arg === null;
+}
+exports.isNull = isNull;
+
+function isNullOrUndefined(arg) {
+  return arg == null;
+}
+exports.isNullOrUndefined = isNullOrUndefined;
+
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+exports.isNumber = isNumber;
+
+function isString(arg) {
+  return typeof arg === 'string';
+}
+exports.isString = isString;
+
+function isSymbol(arg) {
+  return typeof arg === 'symbol';
+}
+exports.isSymbol = isSymbol;
+
+function isUndefined(arg) {
+  return arg === void 0;
+}
+exports.isUndefined = isUndefined;
+
+function isRegExp(re) {
+  return isObject(re) && objectToString(re) === '[object RegExp]';
+}
+exports.isRegExp = isRegExp;
+
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+exports.isObject = isObject;
+
+function isDate(d) {
+  return isObject(d) && objectToString(d) === '[object Date]';
+}
+exports.isDate = isDate;
+
+function isError(e) {
+  return isObject(e) &&
+      (objectToString(e) === '[object Error]' || e instanceof Error);
+}
+exports.isError = isError;
+
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+exports.isFunction = isFunction;
+
+function isPrimitive(arg) {
+  return arg === null ||
+         typeof arg === 'boolean' ||
+         typeof arg === 'number' ||
+         typeof arg === 'string' ||
+         typeof arg === 'symbol' ||  // ES6 symbol
+         typeof arg === 'undefined';
+}
+exports.isPrimitive = isPrimitive;
+
+function isBuffer(arg) {
+  return Buffer.isBuffer(arg);
+}
+exports.isBuffer = isBuffer;
+
+function objectToString(o) {
+  return Object.prototype.toString.call(o);
+}
+}).call(this,require("buffer").Buffer)
+},{"buffer":66}],82:[function(require,module,exports){
+module.exports = require("./lib/_stream_passthrough.js")
+
+},{"./lib/_stream_passthrough.js":77}],83:[function(require,module,exports){
+var Stream = require('stream'); // hack to fix a circular dependency issue when used with browserify
+exports = module.exports = require('./lib/_stream_readable.js');
+exports.Stream = Stream;
+exports.Readable = exports;
+exports.Writable = require('./lib/_stream_writable.js');
+exports.Duplex = require('./lib/_stream_duplex.js');
+exports.Transform = require('./lib/_stream_transform.js');
+exports.PassThrough = require('./lib/_stream_passthrough.js');
+
+},{"./lib/_stream_duplex.js":76,"./lib/_stream_passthrough.js":77,"./lib/_stream_readable.js":78,"./lib/_stream_transform.js":79,"./lib/_stream_writable.js":80,"stream":86}],84:[function(require,module,exports){
+module.exports = require("./lib/_stream_transform.js")
+
+},{"./lib/_stream_transform.js":79}],85:[function(require,module,exports){
+module.exports = require("./lib/_stream_writable.js")
+
+},{"./lib/_stream_writable.js":80}],86:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+module.exports = Stream;
+
+var EE = require('events').EventEmitter;
+var inherits = require('inherits');
+
+inherits(Stream, EE);
+Stream.Readable = require('readable-stream/readable.js');
+Stream.Writable = require('readable-stream/writable.js');
+Stream.Duplex = require('readable-stream/duplex.js');
+Stream.Transform = require('readable-stream/transform.js');
+Stream.PassThrough = require('readable-stream/passthrough.js');
+
+// Backwards-compat with node 0.4.x
+Stream.Stream = Stream;
+
+
+
+// old-style streams.  Note that the pipe method (the only relevant
+// part of this class) is overridden in the Readable class.
+
+function Stream() {
+  EE.call(this);
+}
+
+Stream.prototype.pipe = function(dest, options) {
+  var source = this;
+
+  function ondata(chunk) {
+    if (dest.writable) {
+      if (false === dest.write(chunk) && source.pause) {
+        source.pause();
+      }
+    }
+  }
+
+  source.on('data', ondata);
+
+  function ondrain() {
+    if (source.readable && source.resume) {
+      source.resume();
+    }
+  }
+
+  dest.on('drain', ondrain);
+
+  // If the 'end' option is not supplied, dest.end() will be called when
+  // source gets the 'end' or 'close' events.  Only dest.end() once.
+  if (!dest._isStdio && (!options || options.end !== false)) {
+    source.on('end', onend);
+    source.on('close', onclose);
+  }
+
+  var didOnEnd = false;
+  function onend() {
+    if (didOnEnd) return;
+    didOnEnd = true;
+
+    dest.end();
+  }
+
+
+  function onclose() {
+    if (didOnEnd) return;
+    didOnEnd = true;
+
+    if (typeof dest.destroy === 'function') dest.destroy();
+  }
+
+  // don't leave dangling pipes when there are errors.
+  function onerror(er) {
+    cleanup();
+    if (EE.listenerCount(this, 'error') === 0) {
+      throw er; // Unhandled stream error in pipe.
+    }
+  }
+
+  source.on('error', onerror);
+  dest.on('error', onerror);
+
+  // remove all the event listeners that were added.
+  function cleanup() {
+    source.removeListener('data', ondata);
+    dest.removeListener('drain', ondrain);
+
+    source.removeListener('end', onend);
+    source.removeListener('close', onclose);
+
+    source.removeListener('error', onerror);
+    dest.removeListener('error', onerror);
+
+    source.removeListener('end', cleanup);
+    source.removeListener('close', cleanup);
+
+    dest.removeListener('close', cleanup);
+  }
+
+  source.on('end', cleanup);
+  source.on('close', cleanup);
+
+  dest.on('close', cleanup);
+
+  dest.emit('pipe', source);
+
+  // Allow for unix-like usage: A.pipe(B).pipe(C)
+  return dest;
+};
+
+},{"events":70,"inherits":71,"readable-stream/duplex.js":75,"readable-stream/passthrough.js":82,"readable-stream/readable.js":83,"readable-stream/transform.js":84,"readable-stream/writable.js":85}],87:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var Buffer = require('buffer').Buffer;
+
+var isBufferEncoding = Buffer.isEncoding
+  || function(encoding) {
+       switch (encoding && encoding.toLowerCase()) {
+         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
+         default: return false;
+       }
+     }
+
+
+function assertEncoding(encoding) {
+  if (encoding && !isBufferEncoding(encoding)) {
+    throw new Error('Unknown encoding: ' + encoding);
+  }
+}
+
+// StringDecoder provides an interface for efficiently splitting a series of
+// buffers into a series of JS strings without breaking apart multi-byte
+// characters. CESU-8 is handled as part of the UTF-8 encoding.
+//
+// @TODO Handling all encodings inside a single object makes it very difficult
+// to reason about this code, so it should be split up in the future.
+// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
+// points as used by CESU-8.
+var StringDecoder = exports.StringDecoder = function(encoding) {
+  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
+  assertEncoding(encoding);
+  switch (this.encoding) {
+    case 'utf8':
+      // CESU-8 represents each of Surrogate Pair by 3-bytes
+      this.surrogateSize = 3;
+      break;
+    case 'ucs2':
+    case 'utf16le':
+      // UTF-16 represents each of Surrogate Pair by 2-bytes
+      this.surrogateSize = 2;
+      this.detectIncompleteChar = utf16DetectIncompleteChar;
+      break;
+    case 'base64':
+      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
+      this.surrogateSize = 3;
+      this.detectIncompleteChar = base64DetectIncompleteChar;
+      break;
+    default:
+      this.write = passThroughWrite;
+      return;
+  }
+
+  // Enough space to store all bytes of a single character. UTF-8 needs 4
+  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
+  this.charBuffer = new Buffer(6);
+  // Number of bytes received for the current incomplete multi-byte character.
+  this.charReceived = 0;
+  // Number of bytes expected for the current incomplete multi-byte character.
+  this.charLength = 0;
+};
+
+
+// write decodes the given buffer and returns it as JS string that is
+// guaranteed to not contain any partial multi-byte characters. Any partial
+// character found at the end of the buffer is buffered up, and will be
+// returned when calling write again with the remaining bytes.
+//
+// Note: Converting a Buffer containing an orphan surrogate to a String
+// currently works, but converting a String to a Buffer (via `new Buffer`, or
+// Buffer#write) will replace incomplete surrogates with the unicode
+// replacement character. See https://codereview.chromium.org/121173009/ .
+StringDecoder.prototype.write = function(buffer) {
+  var charStr = '';
+  // if our last write ended with an incomplete multibyte character
+  while (this.charLength) {
+    // determine how many remaining bytes this buffer has to offer for this char
+    var available = (buffer.length >= this.charLength - this.charReceived) ?
+        this.charLength - this.charReceived :
+        buffer.length;
+
+    // add the new bytes to the char buffer
+    buffer.copy(this.charBuffer, this.charReceived, 0, available);
+    this.charReceived += available;
+
+    if (this.charReceived < this.charLength) {
+      // still not enough chars in this buffer? wait for more ...
+      return '';
+    }
+
+    // remove bytes belonging to the current character from the buffer
+    buffer = buffer.slice(available, buffer.length);
+
+    // get the character that was split
+    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
+
+    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
+    var charCode = charStr.charCodeAt(charStr.length - 1);
+    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
+      this.charLength += this.surrogateSize;
+      charStr = '';
+      continue;
+    }
+    this.charReceived = this.charLength = 0;
+
+    // if there are no more bytes in this buffer, just emit our char
+    if (buffer.length === 0) {
+      return charStr;
+    }
+    break;
+  }
+
+  // determine and set charLength / charReceived
+  this.detectIncompleteChar(buffer);
+
+  var end = buffer.length;
+  if (this.charLength) {
+    // buffer the incomplete character bytes we got
+    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
+    end -= this.charReceived;
+  }
+
+  charStr += buffer.toString(this.encoding, 0, end);
+
+  var end = charStr.length - 1;
+  var charCode = charStr.charCodeAt(end);
+  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
+  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
+    var size = this.surrogateSize;
+    this.charLength += size;
+    this.charReceived += size;
+    this.charBuffer.copy(this.charBuffer, size, 0, size);
+    buffer.copy(this.charBuffer, 0, 0, size);
+    return charStr.substring(0, end);
+  }
+
+  // or just emit the charStr
+  return charStr;
+};
+
+// detectIncompleteChar determines if there is an incomplete UTF-8 character at
+// the end of the given buffer. If so, it sets this.charLength to the byte
+// length that character, and sets this.charReceived to the number of bytes
+// that are available for this character.
+StringDecoder.prototype.detectIncompleteChar = function(buffer) {
+  // determine how many bytes we have to check at the end of this buffer
+  var i = (buffer.length >= 3) ? 3 : buffer.length;
+
+  // Figure out if one of the last i bytes of our buffer announces an
+  // incomplete char.
+  for (; i > 0; i--) {
+    var c = buffer[buffer.length - i];
+
+    // See http://en.wikipedia.org/wiki/UTF-8#Description
+
+    // 110XXXXX
+    if (i == 1 && c >> 5 == 0x06) {
+      this.charLength = 2;
+      break;
+    }
+
+    // 1110XXXX
+    if (i <= 2 && c >> 4 == 0x0E) {
+      this.charLength = 3;
+      break;
+    }
+
+    // 11110XXX
+    if (i <= 3 && c >> 3 == 0x1E) {
+      this.charLength = 4;
+      break;
+    }
+  }
+  this.charReceived = i;
+};
+
+StringDecoder.prototype.end = function(buffer) {
+  var res = '';
+  if (buffer && buffer.length)
+    res = this.write(buffer);
+
+  if (this.charReceived) {
+    var cr = this.charReceived;
+    var buf = this.charBuffer;
+    var enc = this.encoding;
+    res += buf.slice(0, cr).toString(enc);
+  }
+
+  return res;
+};
+
+function passThroughWrite(buffer) {
+  return buffer.toString(this.encoding);
+}
+
+function utf16DetectIncompleteChar(buffer) {
+  this.charReceived = buffer.length % 2;
+  this.charLength = this.charReceived ? 2 : 0;
+}
+
+function base64DetectIncompleteChar(buffer) {
+  this.charReceived = buffer.length % 3;
+  this.charLength = this.charReceived ? 3 : 0;
+}
+
+},{"buffer":66}]},{},[65]);