/**
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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 () { };
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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.isSpriteCanvasMaterial = true;
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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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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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_v1, _v2, _v3,
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_v1x, _v1y, _v2x, _v2y, _v3x, _v3y,
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_color = 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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_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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/* TODO
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_canvas.mozImageSmoothingEnabled = false;
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_canvas.webkitImageSmoothingEnabled = false;
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_canvas.msImageSmoothingEnabled = false;
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_canvas.imageSmoothingEnabled = false;
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*/
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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.setScissorTest = 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.isEmpty() === 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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setOpacity(1);
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setBlending(THREE.NormalBlending);
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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.isCamera === undefined) {
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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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var background = scene.background;
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if (background && background.isColor) {
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setOpacity(1);
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setBlending(THREE.NormalBlending);
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setFillStyle(background.getStyle());
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_context.fillRect(0, 0, _canvasWidth, _canvasHeight);
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} else if (this.autoClear === true) {
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this.clear();
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}
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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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_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.intersectsBox(_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.intersectsBox(_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.isAmbientLight) {
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_ambientLight.add(lightColor);
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} else if (light.isDirectionalLight) {
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// for sprites
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_directionalLights.add(lightColor);
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} else if (light.isPointLight) {
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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.isDirectionalLight) {
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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.isPointLight) {
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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 = 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.isSpriteMaterial) {
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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.isSpriteCanvasMaterial) {
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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);
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_context.scale(scaleX, scaleY);
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material.program(_context);
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_context.restore();
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} else if (material.isPointsMaterial) {
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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 * material.size, -scaleY * material.size);
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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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/* DEBUG
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setStrokeStyle( 'rgb(255,255,0)' );
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_context.beginPath();
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_context.moveTo( v1.x - 10, v1.y );
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_context.lineTo( v1.x + 10, v1.y );
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_context.moveTo( v1.x, v1.y - 10 );
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_context.lineTo( v1.x, v1.y + 10 );
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_context.stroke();
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*/
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}
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function renderLine(v1, v2, element, material) {
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setOpacity(material.opacity);
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setBlending(material.blending);
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_context.beginPath();
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_context.moveTo(v1.positionScreen.x, v1.positionScreen.y);
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_context.lineTo(v2.positionScreen.x, v2.positionScreen.y);
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if (material.isLineBasicMaterial) {
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setLineWidth(material.linewidth);
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setLineCap(material.linecap);
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setLineJoin(material.linejoin);
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if (material.vertexColors !== THREE.VertexColors) {
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setStrokeStyle(material.color.getStyle());
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} else {
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var colorStyle1 = element.vertexColors[0].getStyle();
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var colorStyle2 = element.vertexColors[1].getStyle();
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if (colorStyle1 === colorStyle2) {
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setStrokeStyle(colorStyle1);
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} else {
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try {
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var grad = _context.createLinearGradient(
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v1.positionScreen.x,
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v1.positionScreen.y,
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v2.positionScreen.x,
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v2.positionScreen.y
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);
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grad.addColorStop(0, colorStyle1);
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grad.addColorStop(1, colorStyle2);
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} catch (exception) {
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grad = colorStyle1;
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}
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setStrokeStyle(grad);
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}
|
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}
|
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if (material.isLineDashedMaterial) {
|
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setLineDash([material.dashSize, material.gapSize]);
|
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}
|
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_context.stroke();
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_elemBox.expandByScalar(material.linewidth * 2);
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if (material.isLineDashedMaterial) {
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setLineDash([]);
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}
|
|
}
|
|
}
|
|
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;
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_v3x = v3.positionScreen.x; _v3y = v3.positionScreen.y;
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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;
|
|
}
|
|
}
|
|
};
|
