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- /**
- * @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 () {};
- this.setValues( parameters );
- };
- THREE.SpriteCanvasMaterial.prototype = Object.create( THREE.Material.prototype );
- THREE.SpriteCanvasMaterial.prototype.constructor = THREE.SpriteCanvasMaterial;
- THREE.SpriteCanvasMaterial.prototype.isSpriteCanvasMaterial = true;
- 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 ),
- _viewportX = 0,
- _viewportY = 0,
- _viewportWidth = _canvasWidth,
- _viewportHeight = _canvasHeight,
- _pixelRatio = 1,
- _context = _canvas.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 = [],
- _v1, _v2, _v3,
- _v1x, _v1y, _v2x, _v2y, _v3x, _v3y,
- _color = new THREE.Color(),
- _diffuseColor = new THREE.Color(),
- _emissiveColor = new THREE.Color(),
- _lightColor = new THREE.Color(),
- _patterns = {},
- _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 () {};
- }
- 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';
- }
- _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.isEmpty() === 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 ) {
- if ( camera.isCamera === undefined ) {
- console.error( 'THREE.CanvasRenderer.render: camera is not an instance of THREE.Camera.' );
- return;
- }
- var background = scene.background;
- if ( background && background.isColor ) {
- setFillStyle( 'rgb(' + Math.floor( background.r * 255 ) + ',' + Math.floor( background.g * 255 ) + ',' + Math.floor( background.b * 255 ) + ')' );
- _context.fillRect( 0, 0, _canvasWidth, _canvasHeight );
- } else 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;
- _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.intersectsBox( _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.intersectsBox( _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 );
- };
- //
- 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.isAmbientLight ) {
- _ambientLight.add( lightColor );
- } else if ( light.isDirectionalLight ) {
- // for sprites
- _directionalLights.add( lightColor );
- } else if ( light.isPointLight ) {
- // 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.isDirectionalLight ) {
- 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.isPointLight ) {
- 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 = 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.isSpriteMaterial ) {
- 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.isSpriteCanvasMaterial ) {
- 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();
- } else if ( material.isPointsMaterial ) {
- setFillStyle( material.color.getStyle() );
- _context.save();
- _context.translate( v1.x, v1.y );
- if ( material.rotation !== 0 ) _context.rotate( material.rotation );
- _context.scale( scaleX * material.size, - scaleY * material.size );
- _context.fillRect( - 0.5, - 0.5, 1, 1 );
- _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.isLineBasicMaterial ) {
- 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 {
- try {
- var 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.isLineDashedMaterial ) {
- 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.isMeshLambertMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial ) && 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.isMeshBasicMaterial || material.isMeshLambertMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial ) {
- 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.isMeshNormalMaterial ) {
- _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 repeatX = texture.wrapS === THREE.RepeatWrapping || texture.wrapS === THREE.MirroredRepeatWrapping;
- var repeatY = texture.wrapT === THREE.RepeatWrapping || texture.wrapT === THREE.MirroredRepeatWrapping;
- var mirrorX = texture.wrapS === THREE.MirroredRepeatWrapping;
- var mirrorY = texture.wrapT === THREE.MirroredRepeatWrapping;
- //
- var canvas = document.createElement( 'canvas' );
- canvas.width = image.width * ( mirrorX ? 2 : 1 );
- canvas.height = image.height * ( mirrorY ? 2 : 1 );
- var context = canvas.getContext( '2d' );
- context.setTransform( 1, 0, 0, - 1, 0, image.height );
- context.drawImage( image, 0, 0 );
- if ( mirrorX === true ) {
- context.setTransform( - 1, 0, 0, - 1, image.width, image.height );
- context.drawImage( image, - image.width, 0 );
- }
- if ( mirrorY === true ) {
- context.setTransform( 1, 0, 0, 1, 0, 0 );
- context.drawImage( image, 0, image.height );
- }
- if ( mirrorX === true && mirrorY === true ) {
- context.setTransform( - 1, 0, 0, 1, image.width, 0 );
- context.drawImage( image, - image.width, image.height );
- }
- 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';
- } else if ( value === THREE.MultiplyBlending ) {
- _context.globalCompositeOperation = 'multiply';
- }
- _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;
- }
- }
- };
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