text: /**
   * @author mrdoob / http://mrdoob.com/
   */
  
  THREE.SpriteCanvasMaterial = function ( parameters ) {
  
  	THREE.Material.call( this );
  
  	this.type = 'SpriteCanvasMaterial';
  
  	this.color = new THREE.Color( 0xffffff );
  	this.program = function ( context, color ) {};
  
  	this.setValues( parameters );
  
  };
  
  THREE.SpriteCanvasMaterial.prototype = Object.create( THREE.Material.prototype );
  THREE.SpriteCanvasMaterial.prototype.constructor = THREE.SpriteCanvasMaterial;
  
  THREE.SpriteCanvasMaterial.prototype.clone = function () {
  
  	var material = new THREE.SpriteCanvasMaterial();
  
  	material.copy( this );
  	material.color.copy( this.color );
  	material.program = this.program;
  
  	return material;
  
  };
  
  //
  
  THREE.CanvasRenderer = function ( parameters ) {
  
  	console.log( 'THREE.CanvasRenderer', THREE.REVISION );
  
  	parameters = parameters || {};
  
  	var _this = this,
  	_renderData, _elements, _lights,
  	_projector = new THREE.Projector(),
  
  	_canvas = (parameters.canvas !== undefined) ? parameters.canvas : document.createElement( 'canvas' ),
  
  
  	_canvasWidth = _canvas.width,
  	_canvasHeight = _canvas.height,
  	_canvasWidthHalf = Math.floor( _canvasWidth / 2 ),
  	_canvasHeightHalf = Math.floor( _canvasHeight / 2 ),
  
  	_buffer =  document.createElement('canvas'),
  
  	_viewportX = 0,
  	_viewportY = 0,
  	_viewportWidth = _canvasWidth,
  	_viewportHeight = _canvasHeight,
  
  	_pixelRatio = 1,
  
  	_context = _buffer.getContext( '2d', {
  		alpha: parameters.alpha === true
  	} ),
  
  	_clearColor = new THREE.Color( 0x000000 ),
  	_clearAlpha = parameters.alpha === true ? 0 : 1,
  
  	_contextGlobalAlpha = 1,
  	_contextGlobalCompositeOperation = 0,
  	_contextStrokeStyle = null,
  	_contextFillStyle = null,
  	_contextLineWidth = null,
  	_contextLineCap = null,
  	_contextLineJoin = null,
  	_contextLineDash = [],
  
  	_camera,
  
  	_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 = {},
  
  	_image, _uvs,
  	_uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y,
  
  	_clipBox = new THREE.Box2(),
  	_clearBox = new THREE.Box2(),
  	_elemBox = new THREE.Box2(),
  
  	_ambientLight = new THREE.Color(),
  	_directionalLights = new THREE.Color(),
  	_pointLights = new THREE.Color(),
  
  	_vector3 = new THREE.Vector3(), // Needed for PointLight
  	_centroid = new THREE.Vector3(),
  	_normal = new THREE.Vector3(),
  	_normalViewMatrix = new THREE.Matrix3();
  
  	/* TODO
  	_canvas.mozImageSmoothingEnabled = false;
  	_canvas.webkitImageSmoothingEnabled = false;
  	_canvas.msImageSmoothingEnabled = false;
  	_canvas.imageSmoothingEnabled = false;
  	*/
  
  	// dash+gap fallbacks for Firefox and everything else
  
  	if ( _context.setLineDash === undefined ) {
  
  		_context.setLineDash = function () {};
  
  	}
  
  	_canvas.ctx    = _canvas.getContext('2d');
  	_buffer.style.visibility='hidden';
  	_buffer.width = _canvasWidth;
  	_buffer.height = _canvasHeight;
  	_buffer.style.position="absolute";
  	_buffer.style.top = 999999;
  	_buffer.style.right = 999999;
  	_buffer.ctx    = _buffer.getContext('2d');
  
  	this.domElement = _canvas;
  
  	this.autoClear = true;
  	this.sortObjects = true;
  	this.sortElements = true;
  
  	this.info = {
  
  		render: {
  
  			vertices: 0,
  			faces: 0
  
  		}
  
  	};
  
  	// WebGLRenderer compatibility
  
  	this.supportsVertexTextures = function () {};
  	this.setFaceCulling = function () {};
  
  	// API
  
  	this.getContext = function () {
  
  		return _context;
  
  	};
  
  	this.getContextAttributes = function () {
  
  		return _context.getContextAttributes();
  
  	};
  
  	this.getPixelRatio = function () {
  
  		return _pixelRatio;
  
  	};
  
  	this.setPixelRatio = function ( value ) {
  
  		if ( value !== undefined ) _pixelRatio = value;
  
  	};
  
  	this.setSize = function ( width, height, updateStyle ) {
  
  		_canvasWidth = width * _pixelRatio;
  		_canvasHeight = height * _pixelRatio;
  
  		_canvas.width = _canvasWidth;
  		_canvas.height = _canvasHeight;
  
  		_canvasWidthHalf = Math.floor( _canvasWidth / 2 );
  		_canvasHeightHalf = Math.floor( _canvasHeight / 2 );
  
  		if ( updateStyle !== false ) {
  
  			_canvas.style.width = width + 'px';
  			_canvas.style.height = height + 'px';
  
  			_buffer.style.width = width + 'px';
  			_buffer.style.height = height + 'px';
  
  		}
  
  		_clipBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
  		_clipBox.max.set(   _canvasWidthHalf,   _canvasHeightHalf );
  
  		_clearBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
  		_clearBox.max.set(   _canvasWidthHalf,   _canvasHeightHalf );
  
  		_contextGlobalAlpha = 1;
  		_contextGlobalCompositeOperation = 0;
  		_contextStrokeStyle = null;
  		_contextFillStyle = null;
  		_contextLineWidth = null;
  		_contextLineCap = null;
  		_contextLineJoin = null;
  
  		this.setViewport( 0, 0, width, height );
  
  	};
  
  	this.setViewport = function ( x, y, width, height ) {
  
  		_viewportX = x * _pixelRatio;
  		_viewportY = y * _pixelRatio;
  
  		_viewportWidth = width * _pixelRatio;
  		_viewportHeight = height * _pixelRatio;
  
  	};
  
  	this.setScissor = function () {};
  	this.setScissorTest = function () {};
  
  	this.setClearColor = function ( color, alpha ) {
  
  		_clearColor.set( color );
  		_clearAlpha = alpha !== undefined ? alpha : 1;
  
  		_clearBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
  		_clearBox.max.set(   _canvasWidthHalf,   _canvasHeightHalf );
  
  	};
  
  	this.setClearColorHex = function ( hex, alpha ) {
  
  		console.warn( 'THREE.CanvasRenderer: .setClearColorHex() is being removed. Use .setClearColor() instead.' );
  		this.setClearColor( hex, alpha );
  
  	};
  
  	this.getClearColor = function () {
  
  		return _clearColor;
  
  	};
  
  	this.getClearAlpha = function () {
  
  		return _clearAlpha;
  
  	};
  
  	this.getMaxAnisotropy = function () {
  
  		return 0;
  
  	};
  
  	this.clear = function () {
  
  		if ( _clearBox.empty() === false ) {
  
  			_clearBox.intersect( _clipBox );
  			_clearBox.expandByScalar( 2 );
  
  			_clearBox.min.x = _clearBox.min.x + _canvasWidthHalf;
  			_clearBox.min.y =  - _clearBox.min.y + _canvasHeightHalf;		// higher y value !
  			_clearBox.max.x = _clearBox.max.x + _canvasWidthHalf;
  			_clearBox.max.y =  - _clearBox.max.y + _canvasHeightHalf;		// lower y value !
  
  			if ( _clearAlpha < 1 ) {
  
  				_context.clearRect(
  					_clearBox.min.x | 0,
  					_clearBox.max.y | 0,
  					( _clearBox.max.x - _clearBox.min.x ) | 0,
  					( _clearBox.min.y - _clearBox.max.y ) | 0
  				);
  
  			}
  
  			if ( _clearAlpha > 0 ) {
  
  				setBlending( THREE.NormalBlending );
  				setOpacity( 1 );
  
  				setFillStyle( 'rgba(' + Math.floor( _clearColor.r * 255 ) + ',' + Math.floor( _clearColor.g * 255 ) + ',' + Math.floor( _clearColor.b * 255 ) + ',' + _clearAlpha + ')' );
  
  				_context.fillRect(
  					_clearBox.min.x | 0,
  					_clearBox.max.y | 0,
  					( _clearBox.max.x - _clearBox.min.x ) | 0,
  					( _clearBox.min.y - _clearBox.max.y ) | 0
  				);
  
  			}
  
  			_clearBox.makeEmpty();
  
  		}
  
  	};
  
  	// compatibility
  
  	this.clearColor = function () {};
  	this.clearDepth = function () {};
  	this.clearStencil = function () {};
  
  	this.render = function ( scene, camera ) {
  		//_context.save();
  		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();
  
  		_this.info.render.vertices = 0;
  		_this.info.render.faces = 0;
  
  		_context.setTransform( _viewportWidth / _canvasWidth, 0, 0, - _viewportHeight / _canvasHeight, _viewportX, _canvasHeight - _viewportY );
  		_context.translate( _canvasWidthHalf, _canvasHeightHalf );
  
  		_renderData = _projector.projectScene( scene, camera, this.sortObjects, this.sortElements );
  		_elements = _renderData.elements;
  		_lights = _renderData.lights;
  		_camera = camera;
  
  		_normalViewMatrix.getNormalMatrix( camera.matrixWorldInverse );
  
  		/* 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 );
  		*/
  
  		calculateLights();
  
  		for ( var e = 0, el = _elements.length; e < el; ++e ) {
  
  			var element = _elements[ e ];
  
  			var material = element.material;
  
  			if ( material === undefined || material.opacity === 0 ) continue;
  
  			_elemBox.makeEmpty();
  
  			if ( element instanceof THREE.RenderableSprite ) {
  
  				_v1 = element;
  				_v1.x *= _canvasWidthHalf; _v1.y *= _canvasHeightHalf;
  
  				renderSprite( _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.RenderableFace ) {
  
  				_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 > 0 ) {
  
  					expand( _v1.positionScreen, _v2.positionScreen, material.overdraw );
  					expand( _v2.positionScreen, _v3.positionScreen, material.overdraw );
  					expand( _v3.positionScreen, _v1.positionScreen, material.overdraw );
  
  				}
  
  				_elemBox.setFromPoints( [
  					_v1.positionScreen,
  					_v2.positionScreen,
  					_v3.positionScreen
  				] );
  
  				if ( _clipBox.isIntersectionBox( _elemBox ) === true ) {
  
  					renderFace3( _v1, _v2, _v3, 0, 1, 2, element, material );
  
  				}
  
  			}
  
  			/* 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 );
  		//_context.restore();
  		_canvas.ctx.drawImage( _buffer, 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 sprites
  
  				_directionalLights.add( lightColor );
  
  			} else if ( light instanceof THREE.PointLight ) {
  
  				// for sprites
  
  				_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.setFromMatrixPosition( 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.setFromMatrixPosition( 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 renderSprite( v1, element, material ) {
  
  		setOpacity( material.opacity );
  		setBlending( material.blending );
  
  		var scaleX = element.scale.x * _canvasWidthHalf;
  		var scaleY = element.scale.y * _canvasHeightHalf;
  
  		var dist = 0.5 * Math.sqrt( scaleX * scaleX + scaleY * scaleY ); // allow for rotated sprite
  		_elemBox.min.set( v1.x - dist, v1.y - dist );
  		_elemBox.max.set( v1.x + dist, v1.y + dist );
  
  		if ( material instanceof THREE.SpriteMaterial ) {
  
  			var texture = material.map;
  
  			if ( texture !== null ) {
  
  				var pattern = _patterns[ texture.id ];
  
  				if ( pattern === undefined || pattern.version !== texture.version ) {
  
  					pattern = textureToPattern( texture );
  					_patterns[ texture.id ] = pattern;
  
  				}
  
  				if ( pattern.canvas !== undefined ) {
  
  					setFillStyle( pattern.canvas );
  
  					var bitmap = texture.image;
  
  					var ox = bitmap.width * texture.offset.x;
  					var oy = bitmap.height * texture.offset.y;
  
  					var sx = bitmap.width * texture.repeat.x;
  					var sy = bitmap.height * texture.repeat.y;
  
  					var cx = scaleX / sx;
  					var cy = scaleY / sy;
  
  					_context.save();
  					_context.translate( v1.x, v1.y );
  					if ( material.rotation !== 0 ) _context.rotate( material.rotation );
  					_context.translate( - scaleX / 2, - scaleY / 2 );
  					_context.scale( cx, cy );
  					_context.translate( - ox, - oy );
  					_context.fillRect( ox, oy, sx, sy );
  					_context.restore();
  
  				}
  
  			} else {
  
  				// no texture
  
  				setFillStyle( material.color.getStyle() );
  
  				_context.save();
  				_context.translate( v1.x, v1.y );
  				if ( material.rotation !== 0 ) _context.rotate( material.rotation );
  				_context.scale( scaleX, - scaleY );
  				_context.fillRect( - 0.5, - 0.5, 1, 1 );
  				_context.restore();
  
  			}
  
  		} else if ( material instanceof THREE.SpriteCanvasMaterial ) {
  
  			setStrokeStyle( material.color.getStyle() );
  			setFillStyle( material.color.getStyle() );
  
  			_context.save();
  			_context.translate( v1.x, v1.y );
  			if ( material.rotation !== 0 ) _context.rotate( material.rotation );
  			_context.scale( scaleX, scaleY );
  
  			material.program( _context );
  
  			_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();
  		*/
  
  	}
  
  	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 );
  
  			if ( material.vertexColors !== THREE.VertexColors ) {
  
  				setStrokeStyle( material.color.getStyle() );
  
  			} else {
  
  				var colorStyle1 = element.vertexColors[ 0 ].getStyle();
  				var colorStyle2 = element.vertexColors[ 1 ].getStyle();
  
  				if ( colorStyle1 === colorStyle2 ) {
  
  					setStrokeStyle( colorStyle1 );
  
  				} else {
  
  					var grad;
  					try {
  
  						grad = _context.createLinearGradient(
  							v1.positionScreen.x,
  							v1.positionScreen.y,
  							v2.positionScreen.x,
  							v2.positionScreen.y
  						);
  						grad.addColorStop( 0, colorStyle1 );
  						grad.addColorStop( 1, colorStyle2 );
  
  					} catch ( exception ) {
  
  						grad = colorStyle1;
  
  					}
  
  					setStrokeStyle( grad );
  
  				}
  
  			}
  
  			_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() );
  			setLineDash( [ material.dashSize, material.gapSize ] );
  
  			_context.stroke();
  
  			_elemBox.expandByScalar( material.linewidth * 2 );
  
  			setLineDash( [] );
  
  		}
  
  	}
  
  	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 );
  
  			}
  
  			_color.copy( _ambientLight );
  
  			_centroid.copy( v1.positionWorld ).add( v2.positionWorld ).add( v3.positionWorld ).divideScalar( 3 );
  
  			calculateLight( _centroid, element.normalModel, _color );
  
  			_color.multiply( _diffuseColor ).add( _emissiveColor );
  
  			material.wireframe === true	? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin ) : fillPath( _color );
  
  		} else if ( material instanceof THREE.MeshBasicMaterial ||
  				    material instanceof THREE.MeshLambertMaterial ||
  				    material instanceof THREE.MeshPhongMaterial ) {
  
  			if ( material.map !== null ) {
  
  				var mapping = material.map.mapping;
  
  				if ( mapping === THREE.UVMapping ) {
  
  					_uvs = element.uvs;
  					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 === THREE.SphericalReflectionMapping ) {
  
  					_normal.copy( element.vertexNormalsModel[ uv1 ] ).applyMatrix3( _normalViewMatrix );
  					_uv1x = 0.5 * _normal.x + 0.5;
  					_uv1y = 0.5 * _normal.y + 0.5;
  
  					_normal.copy( element.vertexNormalsModel[ uv2 ] ).applyMatrix3( _normalViewMatrix );
  					_uv2x = 0.5 * _normal.x + 0.5;
  					_uv2y = 0.5 * _normal.y + 0.5;
  
  					_normal.copy( element.vertexNormalsModel[ uv3 ] ).applyMatrix3( _normalViewMatrix );
  					_uv3x = 0.5 * _normal.x + 0.5;
  					_uv3y = 0.5 * _normal.y + 0.5;
  
  					patternPath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y, material.envMap );
  
  				}
  
  			} 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.MeshNormalMaterial ) {
  
  			_normal.copy( element.normalModel ).applyMatrix3( _normalViewMatrix );
  
  			_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 {
  
  			_color.setRGB( 1, 1, 1 );
  
  			material.wireframe === true	 ? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin ) : fillPath( _color );
  
  		}
  
  	}
  
  	//
  
  	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 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 textureToPattern( texture ) {
  
  		if ( texture.version === 0 ||
  			texture instanceof THREE.CompressedTexture ||
  			texture instanceof THREE.DataTexture ) {
  
  			return {
  				canvas: undefined,
  				version: texture.version
  			};
  
  		}
  
  		var image = texture.image;
  
  		if ( image.complete === false ) {
  
  			return {
  				canvas: undefined,
  				version: 0
  			};
  
  		}
  
  		var canvas = document.createElement( 'canvas' );
  		canvas.width = image.width;
  		canvas.height = image.height;
  
  		var context = canvas.getContext( '2d' );
  		context.setTransform( 1, 0, 0, - 1, 0, image.height );
  		context.drawImage( image, 0, 0 );
  
  		var repeatX = texture.wrapS === THREE.RepeatWrapping;
  		var repeatY = texture.wrapT === THREE.RepeatWrapping;
  
  		var repeat = 'no-repeat';
  
  		if ( repeatX === true && repeatY === true ) {
  
  			repeat = 'repeat';
  
  		} else if ( repeatX === true ) {
  
  			repeat = 'repeat-x';
  
  		} else if ( repeatY === true ) {
  
  			repeat = 'repeat-y';
  
  		}
  
  		var pattern = _context.createPattern( canvas, repeat );
  
  		if ( texture.onUpdate ) texture.onUpdate( texture );
  
  		return {
  			canvas: pattern,
  			version: texture.version
  		};
  
  	}
  
  	function patternPath( x0, y0, x1, y1, x2, y2, u0, v0, u1, v1, u2, v2, texture ) {
  
  		var pattern = _patterns[ texture.id ];
  
  		if ( pattern === undefined || pattern.version !== texture.version ) {
  
  			pattern = textureToPattern( texture );
  			_patterns[ texture.id ] = pattern;
  
  		}
  
  		if ( pattern.canvas !== undefined ) {
  
  			setFillStyle( pattern.canvas );
  
  		} else {
  
  			setFillStyle( 'rgba( 0, 0, 0, 1)' );
  			_context.fill();
  			return;
  
  		}
  
  		// 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 = ( v0 + offsetY ) * height;
  
  		u1 = ( u1 + offsetX ) * width;
  		v1 = ( v1 + offsetY ) * height;
  
  		u2 = ( u2 + offsetX ) * width;
  		v2 = ( 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 ) 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();
  
  	}
  
  	// Hide anti-alias gaps
  
  	function expand( v1, v2, pixels ) {
  
  		var x = v2.x - v1.x, y = v2.y - v1.y,
  		det = x * x + y * y, idet;
  
  		if ( det === 0 ) return;
  
  		idet = pixels / 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 setLineDash( value ) {
  
  		if ( _contextLineDash.length !== value.length ) {
  
  			_context.setLineDash( value );
  			_contextLineDash = value;
  
  		}
  
  	}
  
  };
  