1105 lines
24 KiB
JavaScript
1105 lines
24 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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THREE.SpriteCanvasMaterial = function ( parameters ) {
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THREE.Material.call( this );
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this.type = 'SpriteCanvasMaterial';
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this.color = new THREE.Color( 0xffffff );
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this.program = function ( context, color ) {};
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this.setValues( parameters );
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};
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THREE.SpriteCanvasMaterial.prototype = Object.create( THREE.Material.prototype );
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THREE.SpriteCanvasMaterial.prototype.constructor = THREE.SpriteCanvasMaterial;
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THREE.SpriteCanvasMaterial.prototype.clone = function () {
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var material = new THREE.SpriteCanvasMaterial();
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material.copy( this );
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material.color.copy( this.color );
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material.program = this.program;
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return material;
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};
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//
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THREE.CanvasRenderer = function ( parameters ) {
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console.log( 'THREE.CanvasRenderer', THREE.REVISION );
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var smoothstep = THREE.Math.smoothstep;
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parameters = parameters || {};
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var _this = this,
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_renderData, _elements, _lights,
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_projector = new THREE.Projector(),
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_canvas = parameters.canvas !== undefined
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? parameters.canvas
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: document.createElement( 'canvas' ),
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_canvasWidth = _canvas.width,
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_canvasHeight = _canvas.height,
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_canvasWidthHalf = Math.floor( _canvasWidth / 2 ),
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_canvasHeightHalf = Math.floor( _canvasHeight / 2 ),
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_viewportX = 0,
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_viewportY = 0,
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_viewportWidth = _canvasWidth,
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_viewportHeight = _canvasHeight,
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pixelRatio = 1,
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_context = _canvas.getContext( '2d', {
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alpha: parameters.alpha === true
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} ),
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_clearColor = new THREE.Color( 0x000000 ),
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_clearAlpha = parameters.alpha === true ? 0 : 1,
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_contextGlobalAlpha = 1,
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_contextGlobalCompositeOperation = 0,
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_contextStrokeStyle = null,
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_contextFillStyle = null,
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_contextLineWidth = null,
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_contextLineCap = null,
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_contextLineJoin = null,
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_contextLineDash = [],
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_camera,
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_v1, _v2, _v3, _v4,
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_v5 = new THREE.RenderableVertex(),
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_v6 = new THREE.RenderableVertex(),
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_v1x, _v1y, _v2x, _v2y, _v3x, _v3y,
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_v4x, _v4y, _v5x, _v5y, _v6x, _v6y,
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_color = new THREE.Color(),
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_color1 = new THREE.Color(),
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_color2 = new THREE.Color(),
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_color3 = new THREE.Color(),
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_color4 = new THREE.Color(),
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_diffuseColor = new THREE.Color(),
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_emissiveColor = new THREE.Color(),
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_lightColor = new THREE.Color(),
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_patterns = {},
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_image, _uvs,
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_uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y,
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_clipBox = new THREE.Box2(),
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_clearBox = new THREE.Box2(),
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_elemBox = new THREE.Box2(),
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_ambientLight = new THREE.Color(),
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_directionalLights = new THREE.Color(),
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_pointLights = new THREE.Color(),
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_vector3 = new THREE.Vector3(), // Needed for PointLight
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_centroid = new THREE.Vector3(),
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_normal = new THREE.Vector3(),
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_normalViewMatrix = new THREE.Matrix3();
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// dash+gap fallbacks for Firefox and everything else
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if ( _context.setLineDash === undefined ) {
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_context.setLineDash = function () {}
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}
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this.domElement = _canvas;
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this.autoClear = true;
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this.sortObjects = true;
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this.sortElements = true;
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this.info = {
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render: {
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vertices: 0,
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faces: 0
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}
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};
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// WebGLRenderer compatibility
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this.supportsVertexTextures = function () {};
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this.setFaceCulling = function () {};
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// API
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this.getContext = function () {
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return _context;
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};
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this.getContextAttributes = function () {
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return _context.getContextAttributes();
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};
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this.getPixelRatio = function () {
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return pixelRatio;
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};
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this.setPixelRatio = function ( value ) {
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if ( value !== undefined ) pixelRatio = value;
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};
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this.setSize = function ( width, height, updateStyle ) {
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_canvasWidth = width * pixelRatio;
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_canvasHeight = height * pixelRatio;
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_canvas.width = _canvasWidth;
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_canvas.height = _canvasHeight;
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_canvasWidthHalf = Math.floor( _canvasWidth / 2 );
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_canvasHeightHalf = Math.floor( _canvasHeight / 2 );
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if ( updateStyle !== false ) {
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_canvas.style.width = width + 'px';
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_canvas.style.height = height + 'px';
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}
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_clipBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
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_clipBox.max.set( _canvasWidthHalf, _canvasHeightHalf );
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_clearBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
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_clearBox.max.set( _canvasWidthHalf, _canvasHeightHalf );
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_contextGlobalAlpha = 1;
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_contextGlobalCompositeOperation = 0;
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_contextStrokeStyle = null;
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_contextFillStyle = null;
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_contextLineWidth = null;
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_contextLineCap = null;
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_contextLineJoin = null;
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this.setViewport( 0, 0, width, height );
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};
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this.setViewport = function ( x, y, width, height ) {
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_viewportX = x * pixelRatio;
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_viewportY = y * pixelRatio;
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_viewportWidth = width * pixelRatio;
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_viewportHeight = height * pixelRatio;
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};
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this.setScissor = function () {};
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this.enableScissorTest = function () {};
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this.setClearColor = function ( color, alpha ) {
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_clearColor.set( color );
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_clearAlpha = alpha !== undefined ? alpha : 1;
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_clearBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
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_clearBox.max.set( _canvasWidthHalf, _canvasHeightHalf );
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};
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this.setClearColorHex = function ( hex, alpha ) {
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console.warn( 'THREE.CanvasRenderer: .setClearColorHex() is being removed. Use .setClearColor() instead.' );
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this.setClearColor( hex, alpha );
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};
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this.getClearColor = function () {
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return _clearColor;
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};
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this.getClearAlpha = function () {
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return _clearAlpha;
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};
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this.getMaxAnisotropy = function () {
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return 0;
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};
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this.clear = function () {
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if ( _clearBox.empty() === false ) {
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_clearBox.intersect( _clipBox );
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_clearBox.expandByScalar( 2 );
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_clearBox.min.x = _clearBox.min.x + _canvasWidthHalf;
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_clearBox.min.y = - _clearBox.min.y + _canvasHeightHalf; // higher y value !
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_clearBox.max.x = _clearBox.max.x + _canvasWidthHalf;
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_clearBox.max.y = - _clearBox.max.y + _canvasHeightHalf; // lower y value !
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if ( _clearAlpha < 1 ) {
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_context.clearRect(
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_clearBox.min.x | 0,
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_clearBox.max.y | 0,
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( _clearBox.max.x - _clearBox.min.x ) | 0,
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( _clearBox.min.y - _clearBox.max.y ) | 0
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);
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}
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if ( _clearAlpha > 0 ) {
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setBlending( THREE.NormalBlending );
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setOpacity( 1 );
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setFillStyle( 'rgba(' + Math.floor( _clearColor.r * 255 ) + ',' + Math.floor( _clearColor.g * 255 ) + ',' + Math.floor( _clearColor.b * 255 ) + ',' + _clearAlpha + ')' );
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_context.fillRect(
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_clearBox.min.x | 0,
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_clearBox.max.y | 0,
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( _clearBox.max.x - _clearBox.min.x ) | 0,
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( _clearBox.min.y - _clearBox.max.y ) | 0
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);
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}
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_clearBox.makeEmpty();
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}
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};
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// compatibility
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this.clearColor = function () {};
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this.clearDepth = function () {};
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this.clearStencil = function () {};
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this.render = function ( scene, camera ) {
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if ( camera instanceof THREE.Camera === false ) {
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console.error( 'THREE.CanvasRenderer.render: camera is not an instance of THREE.Camera.' );
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return;
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}
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if ( this.autoClear === true ) this.clear();
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_this.info.render.vertices = 0;
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_this.info.render.faces = 0;
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_context.setTransform( _viewportWidth / _canvasWidth, 0, 0, - _viewportHeight / _canvasHeight, _viewportX, _canvasHeight - _viewportY );
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_context.translate( _canvasWidthHalf, _canvasHeightHalf );
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_renderData = _projector.projectScene( scene, camera, this.sortObjects, this.sortElements );
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_elements = _renderData.elements;
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_lights = _renderData.lights;
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_camera = camera;
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_normalViewMatrix.getNormalMatrix( camera.matrixWorldInverse );
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/* DEBUG
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setFillStyle( 'rgba( 0, 255, 255, 0.5 )' );
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_context.fillRect( _clipBox.min.x, _clipBox.min.y, _clipBox.max.x - _clipBox.min.x, _clipBox.max.y - _clipBox.min.y );
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*/
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calculateLights();
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for ( var e = 0, el = _elements.length; e < el; e ++ ) {
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var element = _elements[ e ];
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var material = element.material;
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if ( material === undefined || material.opacity === 0 ) continue;
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_elemBox.makeEmpty();
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if ( element instanceof THREE.RenderableSprite ) {
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_v1 = element;
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_v1.x *= _canvasWidthHalf; _v1.y *= _canvasHeightHalf;
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renderSprite( _v1, element, material );
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} else if ( element instanceof THREE.RenderableLine ) {
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_v1 = element.v1; _v2 = element.v2;
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_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;
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_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;
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_elemBox.setFromPoints( [
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_v1.positionScreen,
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_v2.positionScreen
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] );
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if ( _clipBox.isIntersectionBox( _elemBox ) === true ) {
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renderLine( _v1, _v2, element, material );
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}
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} else if ( element instanceof THREE.RenderableFace ) {
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_v1 = element.v1; _v2 = element.v2; _v3 = element.v3;
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if ( _v1.positionScreen.z < - 1 || _v1.positionScreen.z > 1 ) continue;
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if ( _v2.positionScreen.z < - 1 || _v2.positionScreen.z > 1 ) continue;
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if ( _v3.positionScreen.z < - 1 || _v3.positionScreen.z > 1 ) continue;
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_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;
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_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;
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_v3.positionScreen.x *= _canvasWidthHalf; _v3.positionScreen.y *= _canvasHeightHalf;
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if ( material.overdraw > 0 ) {
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expand( _v1.positionScreen, _v2.positionScreen, material.overdraw );
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expand( _v2.positionScreen, _v3.positionScreen, material.overdraw );
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expand( _v3.positionScreen, _v1.positionScreen, material.overdraw );
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}
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_elemBox.setFromPoints( [
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_v1.positionScreen,
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_v2.positionScreen,
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_v3.positionScreen
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] );
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if ( _clipBox.isIntersectionBox( _elemBox ) === true ) {
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renderFace3( _v1, _v2, _v3, 0, 1, 2, element, material );
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}
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}
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/* DEBUG
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setLineWidth( 1 );
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setStrokeStyle( 'rgba( 0, 255, 0, 0.5 )' );
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_context.strokeRect( _elemBox.min.x, _elemBox.min.y, _elemBox.max.x - _elemBox.min.x, _elemBox.max.y - _elemBox.min.y );
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*/
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_clearBox.union( _elemBox );
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}
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/* DEBUG
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setLineWidth( 1 );
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setStrokeStyle( 'rgba( 255, 0, 0, 0.5 )' );
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_context.strokeRect( _clearBox.min.x, _clearBox.min.y, _clearBox.max.x - _clearBox.min.x, _clearBox.max.y - _clearBox.min.y );
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*/
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_context.setTransform( 1, 0, 0, 1, 0, 0 );
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};
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//
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function calculateLights() {
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_ambientLight.setRGB( 0, 0, 0 );
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_directionalLights.setRGB( 0, 0, 0 );
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_pointLights.setRGB( 0, 0, 0 );
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for ( var l = 0, ll = _lights.length; l < ll; l ++ ) {
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var light = _lights[ l ];
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var lightColor = light.color;
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if ( light instanceof THREE.AmbientLight ) {
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_ambientLight.add( lightColor );
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} else if ( light instanceof THREE.DirectionalLight ) {
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// for sprites
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_directionalLights.add( lightColor );
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} else if ( light instanceof THREE.PointLight ) {
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// for sprites
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_pointLights.add( lightColor );
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}
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}
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}
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function calculateLight( position, normal, color ) {
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for ( var l = 0, ll = _lights.length; l < ll; l ++ ) {
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var light = _lights[ l ];
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_lightColor.copy( light.color );
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if ( light instanceof THREE.DirectionalLight ) {
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var lightPosition = _vector3.setFromMatrixPosition( light.matrixWorld ).normalize();
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var amount = normal.dot( lightPosition );
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if ( amount <= 0 ) continue;
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amount *= light.intensity;
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color.add( _lightColor.multiplyScalar( amount ) );
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} else if ( light instanceof THREE.PointLight ) {
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var lightPosition = _vector3.setFromMatrixPosition( light.matrixWorld );
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var amount = normal.dot( _vector3.subVectors( lightPosition, position ).normalize() );
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if ( amount <= 0 ) continue;
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amount *= light.distance == 0 ? 1 : 1 - Math.min( position.distanceTo( lightPosition ) / light.distance, 1 );
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if ( amount == 0 ) continue;
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amount *= light.intensity;
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color.add( _lightColor.multiplyScalar( amount ) );
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}
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}
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}
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function renderSprite( v1, element, material ) {
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setOpacity( material.opacity );
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setBlending( material.blending );
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var scaleX = element.scale.x * _canvasWidthHalf;
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var scaleY = element.scale.y * _canvasHeightHalf;
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var dist = 0.5 * Math.sqrt( scaleX * scaleX + scaleY * scaleY ); // allow for rotated sprite
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_elemBox.min.set( v1.x - dist, v1.y - dist );
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_elemBox.max.set( v1.x + dist, v1.y + dist );
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if ( material instanceof THREE.SpriteMaterial ) {
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var texture = material.map;
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if ( texture !== null ) {
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var pattern = _patterns[ texture.id ];
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if ( pattern === undefined || pattern.version !== texture.version ) {
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pattern = textureToPattern( texture );
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_patterns[ texture.id ] = pattern;
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}
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if ( pattern.canvas !== undefined ) {
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setFillStyle( pattern.canvas );
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var bitmap = texture.image;
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var ox = bitmap.width * texture.offset.x;
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var oy = bitmap.height * texture.offset.y;
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var sx = bitmap.width * texture.repeat.x;
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var sy = bitmap.height * texture.repeat.y;
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var cx = scaleX / sx;
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var cy = scaleY / sy;
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_context.save();
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_context.translate( v1.x, v1.y );
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if ( material.rotation !== 0 ) _context.rotate( material.rotation );
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_context.translate( - scaleX / 2, - scaleY / 2 );
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_context.scale( cx, cy );
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_context.translate( - ox, - oy );
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_context.fillRect( ox, oy, sx, sy );
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_context.restore();
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}
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} else {
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// no texture
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setFillStyle( material.color.getStyle() );
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_context.save();
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_context.translate( v1.x, v1.y );
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if ( material.rotation !== 0 ) _context.rotate( material.rotation );
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_context.scale( scaleX, - scaleY );
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_context.fillRect( - 0.5, - 0.5, 1, 1 );
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_context.restore();
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}
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} else if ( material instanceof THREE.SpriteCanvasMaterial ) {
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setStrokeStyle( material.color.getStyle() );
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setFillStyle( material.color.getStyle() );
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_context.save();
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_context.translate( v1.x, v1.y );
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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 {
|
|
|
|
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 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.MeshDepthMaterial ) {
|
|
|
|
_color.r = _color.g = _color.b = 1 - smoothstep( v1.positionScreen.z * v1.positionScreen.w, _camera.near, _camera.far );
|
|
|
|
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;
|
|
|
|
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';
|
|
|
|
}
|
|
|
|
return {
|
|
canvas: _context.createPattern( canvas, repeat ),
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|