1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit-test/tests/v8-v5/check-raytrace.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,935 @@
1.4 +// The ray tracer code in this file is written by Adam Burmister. It
1.5 +// is available in its original form from:
1.6 +//
1.7 +// http://labs.flog.nz.co/raytracer/
1.8 +//
1.9 +// It has been modified slightly by Google to work as a standalone
1.10 +// benchmark, but the all the computational code remains
1.11 +// untouched. This file also contains a copy of parts of the Prototype
1.12 +// JavaScript framework which is used by the ray tracer.
1.13 +
1.14 +//var RayTrace = new BenchmarkSuite('RayTrace', 932666, [
1.15 +// new Benchmark('RayTrace', renderScene)
1.16 +//]);
1.17 +
1.18 +
1.19 +// Variable used to hold a number that can be used to verify that
1.20 +// the scene was ray traced correctly.
1.21 +var checkNumber;
1.22 +
1.23 +
1.24 +// ------------------------------------------------------------------------
1.25 +// ------------------------------------------------------------------------
1.26 +
1.27 +// The following is a copy of parts of the Prototype JavaScript library:
1.28 +
1.29 +// Prototype JavaScript framework, version 1.5.0
1.30 +// (c) 2005-2007 Sam Stephenson
1.31 +//
1.32 +// Prototype is freely distributable under the terms of an MIT-style license.
1.33 +// For details, see the Prototype web site: http://prototype.conio.net/
1.34 +
1.35 +
1.36 +var Class = {
1.37 + create: function() {
1.38 + return function() {
1.39 + this.initialize.apply(this, arguments);
1.40 + }
1.41 + }
1.42 +};
1.43 +
1.44 +
1.45 +Object.extend = function(destination, source) {
1.46 + for (var property in source) {
1.47 + destination[property] = source[property];
1.48 + }
1.49 + return destination;
1.50 +};
1.51 +
1.52 +
1.53 +// ------------------------------------------------------------------------
1.54 +// ------------------------------------------------------------------------
1.55 +
1.56 +// The rest of this file is the actual ray tracer written by Adam
1.57 +// Burmister. It's a concatenation of the following files:
1.58 +//
1.59 +// flog/color.js
1.60 +// flog/light.js
1.61 +// flog/vector.js
1.62 +// flog/ray.js
1.63 +// flog/scene.js
1.64 +// flog/material/basematerial.js
1.65 +// flog/material/solid.js
1.66 +// flog/material/chessboard.js
1.67 +// flog/shape/baseshape.js
1.68 +// flog/shape/sphere.js
1.69 +// flog/shape/plane.js
1.70 +// flog/intersectioninfo.js
1.71 +// flog/camera.js
1.72 +// flog/background.js
1.73 +// flog/engine.js
1.74 +
1.75 +
1.76 +/* Fake a Flog.* namespace */
1.77 +if(typeof(Flog) == 'undefined') var Flog = {};
1.78 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.79 +
1.80 +Flog.RayTracer.Color = Class.create();
1.81 +
1.82 +Flog.RayTracer.Color.prototype = {
1.83 + red : 0.0,
1.84 + green : 0.0,
1.85 + blue : 0.0,
1.86 +
1.87 + initialize : function(r, g, b) {
1.88 + if(!r) r = 0.0;
1.89 + if(!g) g = 0.0;
1.90 + if(!b) b = 0.0;
1.91 +
1.92 + this.red = r;
1.93 + this.green = g;
1.94 + this.blue = b;
1.95 + },
1.96 +
1.97 + add : function(c1, c2){
1.98 + var result = new Flog.RayTracer.Color(0,0,0);
1.99 +
1.100 + result.red = c1.red + c2.red;
1.101 + result.green = c1.green + c2.green;
1.102 + result.blue = c1.blue + c2.blue;
1.103 +
1.104 + return result;
1.105 + },
1.106 +
1.107 + addScalar: function(c1, s){
1.108 + var result = new Flog.RayTracer.Color(0,0,0);
1.109 +
1.110 + result.red = c1.red + s;
1.111 + result.green = c1.green + s;
1.112 + result.blue = c1.blue + s;
1.113 +
1.114 + result.limit();
1.115 +
1.116 + return result;
1.117 + },
1.118 +
1.119 + subtract: function(c1, c2){
1.120 + var result = new Flog.RayTracer.Color(0,0,0);
1.121 +
1.122 + result.red = c1.red - c2.red;
1.123 + result.green = c1.green - c2.green;
1.124 + result.blue = c1.blue - c2.blue;
1.125 +
1.126 + return result;
1.127 + },
1.128 +
1.129 + multiply : function(c1, c2) {
1.130 + var result = new Flog.RayTracer.Color(0,0,0);
1.131 +
1.132 + result.red = c1.red * c2.red;
1.133 + result.green = c1.green * c2.green;
1.134 + result.blue = c1.blue * c2.blue;
1.135 +
1.136 + return result;
1.137 + },
1.138 +
1.139 + multiplyScalar : function(c1, f) {
1.140 + var result = new Flog.RayTracer.Color(0,0,0);
1.141 +
1.142 + result.red = c1.red * f;
1.143 + result.green = c1.green * f;
1.144 + result.blue = c1.blue * f;
1.145 +
1.146 + return result;
1.147 + },
1.148 +
1.149 + divideFactor : function(c1, f) {
1.150 + var result = new Flog.RayTracer.Color(0,0,0);
1.151 +
1.152 + result.red = c1.red / f;
1.153 + result.green = c1.green / f;
1.154 + result.blue = c1.blue / f;
1.155 +
1.156 + return result;
1.157 + },
1.158 +
1.159 + limit: function(){
1.160 + this.red = (this.red > 0.0) ? ( (this.red > 1.0) ? 1.0 : this.red ) : 0.0;
1.161 + this.green = (this.green > 0.0) ? ( (this.green > 1.0) ? 1.0 : this.green ) : 0.0;
1.162 + this.blue = (this.blue > 0.0) ? ( (this.blue > 1.0) ? 1.0 : this.blue ) : 0.0;
1.163 + },
1.164 +
1.165 + distance : function(color) {
1.166 + var d = Math.abs(this.red - color.red) + Math.abs(this.green - color.green) + Math.abs(this.blue - color.blue);
1.167 + return d;
1.168 + },
1.169 +
1.170 + blend: function(c1, c2, w){
1.171 + var result = new Flog.RayTracer.Color(0,0,0);
1.172 + result = Flog.RayTracer.Color.prototype.add(
1.173 + Flog.RayTracer.Color.prototype.multiplyScalar(c1, 1 - w),
1.174 + Flog.RayTracer.Color.prototype.multiplyScalar(c2, w)
1.175 + );
1.176 + return result;
1.177 + },
1.178 +
1.179 + brightness : function() {
1.180 + var r = Math.floor(this.red*255);
1.181 + var g = Math.floor(this.green*255);
1.182 + var b = Math.floor(this.blue*255);
1.183 + return (r * 77 + g * 150 + b * 29) >> 8;
1.184 + },
1.185 +
1.186 + toString : function () {
1.187 + var r = Math.floor(this.red*255);
1.188 + var g = Math.floor(this.green*255);
1.189 + var b = Math.floor(this.blue*255);
1.190 +
1.191 + return "rgb("+ r +","+ g +","+ b +")";
1.192 + }
1.193 +}
1.194 +/* Fake a Flog.* namespace */
1.195 +if(typeof(Flog) == 'undefined') var Flog = {};
1.196 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.197 +
1.198 +Flog.RayTracer.Light = Class.create();
1.199 +
1.200 +Flog.RayTracer.Light.prototype = {
1.201 + position: null,
1.202 + color: null,
1.203 + intensity: 10.0,
1.204 +
1.205 + initialize : function(pos, color, intensity) {
1.206 + this.position = pos;
1.207 + this.color = color;
1.208 + this.intensity = (intensity ? intensity : 10.0);
1.209 + },
1.210 +
1.211 + getIntensity: function(distance){
1.212 + if(distance >= intensity) return 0;
1.213 +
1.214 + return Math.pow((intensity - distance) / strength, 0.2);
1.215 + },
1.216 +
1.217 + toString : function () {
1.218 + return 'Light [' + this.position.x + ',' + this.position.y + ',' + this.position.z + ']';
1.219 + }
1.220 +}
1.221 +/* Fake a Flog.* namespace */
1.222 +if(typeof(Flog) == 'undefined') var Flog = {};
1.223 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.224 +
1.225 +Flog.RayTracer.Vector = Class.create();
1.226 +
1.227 +Flog.RayTracer.Vector.prototype = {
1.228 + x : 0.0,
1.229 + y : 0.0,
1.230 + z : 0.0,
1.231 +
1.232 + initialize : function(x, y, z) {
1.233 + this.x = (x ? x : 0);
1.234 + this.y = (y ? y : 0);
1.235 + this.z = (z ? z : 0);
1.236 + },
1.237 +
1.238 + copy: function(vector){
1.239 + this.x = vector.x;
1.240 + this.y = vector.y;
1.241 + this.z = vector.z;
1.242 + },
1.243 +
1.244 + normalize : function() {
1.245 + var m = this.magnitude();
1.246 + return new Flog.RayTracer.Vector(this.x / m, this.y / m, this.z / m);
1.247 + },
1.248 +
1.249 + magnitude : function() {
1.250 + return Math.sqrt((this.x * this.x) + (this.y * this.y) + (this.z * this.z));
1.251 + },
1.252 +
1.253 + cross : function(w) {
1.254 + return new Flog.RayTracer.Vector(
1.255 + -this.z * w.y + this.y * w.z,
1.256 + this.z * w.x - this.x * w.z,
1.257 + -this.y * w.x + this.x * w.y);
1.258 + },
1.259 +
1.260 + dot : function(w) {
1.261 + return this.x * w.x + this.y * w.y + this.z * w.z;
1.262 + },
1.263 +
1.264 + add : function(v, w) {
1.265 + return new Flog.RayTracer.Vector(w.x + v.x, w.y + v.y, w.z + v.z);
1.266 + },
1.267 +
1.268 + subtract : function(v, w) {
1.269 + if(!w || !v) throw 'Vectors must be defined [' + v + ',' + w + ']';
1.270 + return new Flog.RayTracer.Vector(v.x - w.x, v.y - w.y, v.z - w.z);
1.271 + },
1.272 +
1.273 + multiplyVector : function(v, w) {
1.274 + return new Flog.RayTracer.Vector(v.x * w.x, v.y * w.y, v.z * w.z);
1.275 + },
1.276 +
1.277 + multiplyScalar : function(v, w) {
1.278 + return new Flog.RayTracer.Vector(v.x * w, v.y * w, v.z * w);
1.279 + },
1.280 +
1.281 + toString : function () {
1.282 + return 'Vector [' + this.x + ',' + this.y + ',' + this.z + ']';
1.283 + }
1.284 +}
1.285 +/* Fake a Flog.* namespace */
1.286 +if(typeof(Flog) == 'undefined') var Flog = {};
1.287 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.288 +
1.289 +Flog.RayTracer.Ray = Class.create();
1.290 +
1.291 +Flog.RayTracer.Ray.prototype = {
1.292 + position : null,
1.293 + direction : null,
1.294 + initialize : function(pos, dir) {
1.295 + this.position = pos;
1.296 + this.direction = dir;
1.297 + },
1.298 +
1.299 + toString : function () {
1.300 + return 'Ray [' + this.position + ',' + this.direction + ']';
1.301 + }
1.302 +}
1.303 +/* Fake a Flog.* namespace */
1.304 +if(typeof(Flog) == 'undefined') var Flog = {};
1.305 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.306 +
1.307 +Flog.RayTracer.Scene = Class.create();
1.308 +
1.309 +Flog.RayTracer.Scene.prototype = {
1.310 + camera : null,
1.311 + shapes : [],
1.312 + lights : [],
1.313 + background : null,
1.314 +
1.315 + initialize : function() {
1.316 + this.camera = new Flog.RayTracer.Camera(
1.317 + new Flog.RayTracer.Vector(0,0,-5),
1.318 + new Flog.RayTracer.Vector(0,0,1),
1.319 + new Flog.RayTracer.Vector(0,1,0)
1.320 + );
1.321 + this.shapes = new Array();
1.322 + this.lights = new Array();
1.323 + this.background = new Flog.RayTracer.Background(new Flog.RayTracer.Color(0,0,0.5), 0.2);
1.324 + }
1.325 +}
1.326 +/* Fake a Flog.* namespace */
1.327 +if(typeof(Flog) == 'undefined') var Flog = {};
1.328 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.329 +if(typeof(Flog.RayTracer.Material) == 'undefined') Flog.RayTracer.Material = {};
1.330 +
1.331 +Flog.RayTracer.Material.BaseMaterial = Class.create();
1.332 +
1.333 +Flog.RayTracer.Material.BaseMaterial.prototype = {
1.334 +
1.335 + gloss: 2.0, // [0...infinity] 0 = matt
1.336 + transparency: 0.0, // 0=opaque
1.337 + reflection: 0.0, // [0...infinity] 0 = no reflection
1.338 + refraction: 0.50,
1.339 + hasTexture: false,
1.340 +
1.341 + initialize : function() {
1.342 +
1.343 + },
1.344 +
1.345 + getColor: function(u, v){
1.346 +
1.347 + },
1.348 +
1.349 + wrapUp: function(t){
1.350 + t = t % 2.0;
1.351 + if(t < -1) t += 2.0;
1.352 + if(t >= 1) t -= 2.0;
1.353 + return t;
1.354 + },
1.355 +
1.356 + toString : function () {
1.357 + return 'Material [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
1.358 + }
1.359 +}
1.360 +/* Fake a Flog.* namespace */
1.361 +if(typeof(Flog) == 'undefined') var Flog = {};
1.362 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.363 +
1.364 +Flog.RayTracer.Material.Solid = Class.create();
1.365 +
1.366 +Flog.RayTracer.Material.Solid.prototype = Object.extend(
1.367 + new Flog.RayTracer.Material.BaseMaterial(), {
1.368 + initialize : function(color, reflection, refraction, transparency, gloss) {
1.369 + this.color = color;
1.370 + this.reflection = reflection;
1.371 + this.transparency = transparency;
1.372 + this.gloss = gloss;
1.373 + this.hasTexture = false;
1.374 + },
1.375 +
1.376 + getColor: function(u, v){
1.377 + return this.color;
1.378 + },
1.379 +
1.380 + toString : function () {
1.381 + return 'SolidMaterial [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
1.382 + }
1.383 + }
1.384 +);
1.385 +/* Fake a Flog.* namespace */
1.386 +if(typeof(Flog) == 'undefined') var Flog = {};
1.387 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.388 +
1.389 +Flog.RayTracer.Material.Chessboard = Class.create();
1.390 +
1.391 +Flog.RayTracer.Material.Chessboard.prototype = Object.extend(
1.392 + new Flog.RayTracer.Material.BaseMaterial(), {
1.393 + colorEven: null,
1.394 + colorOdd: null,
1.395 + density: 0.5,
1.396 +
1.397 + initialize : function(colorEven, colorOdd, reflection, transparency, gloss, density) {
1.398 + this.colorEven = colorEven;
1.399 + this.colorOdd = colorOdd;
1.400 + this.reflection = reflection;
1.401 + this.transparency = transparency;
1.402 + this.gloss = gloss;
1.403 + this.density = density;
1.404 + this.hasTexture = true;
1.405 + },
1.406 +
1.407 + getColor: function(u, v){
1.408 + var t = this.wrapUp(u * this.density) * this.wrapUp(v * this.density);
1.409 +
1.410 + if(t < 0.0)
1.411 + return this.colorEven;
1.412 + else
1.413 + return this.colorOdd;
1.414 + },
1.415 +
1.416 + toString : function () {
1.417 + return 'ChessMaterial [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
1.418 + }
1.419 + }
1.420 +);
1.421 +/* Fake a Flog.* namespace */
1.422 +if(typeof(Flog) == 'undefined') var Flog = {};
1.423 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.424 +if(typeof(Flog.RayTracer.Shape) == 'undefined') Flog.RayTracer.Shape = {};
1.425 +
1.426 +Flog.RayTracer.Shape.BaseShape = Class.create();
1.427 +
1.428 +Flog.RayTracer.Shape.BaseShape.prototype = {
1.429 + position: null,
1.430 + material: null,
1.431 +
1.432 + initialize : function() {
1.433 + this.position = new Vector(0,0,0);
1.434 + this.material = new Flog.RayTracer.Material.SolidMaterial(
1.435 + new Flog.RayTracer.Color(1,0,1),
1.436 + 0,
1.437 + 0,
1.438 + 0
1.439 + );
1.440 + },
1.441 +
1.442 + toString : function () {
1.443 + return 'Material [gloss=' + this.gloss + ', transparency=' + this.transparency + ', hasTexture=' + this.hasTexture +']';
1.444 + }
1.445 +}
1.446 +/* Fake a Flog.* namespace */
1.447 +if(typeof(Flog) == 'undefined') var Flog = {};
1.448 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.449 +if(typeof(Flog.RayTracer.Shape) == 'undefined') Flog.RayTracer.Shape = {};
1.450 +
1.451 +Flog.RayTracer.Shape.Sphere = Class.create();
1.452 +
1.453 +Flog.RayTracer.Shape.Sphere.prototype = {
1.454 + initialize : function(pos, radius, material) {
1.455 + this.radius = radius;
1.456 + this.position = pos;
1.457 + this.material = material;
1.458 + },
1.459 +
1.460 + intersect: function(ray){
1.461 + var info = new Flog.RayTracer.IntersectionInfo();
1.462 + info.shape = this;
1.463 +
1.464 + var dst = Flog.RayTracer.Vector.prototype.subtract(ray.position, this.position);
1.465 +
1.466 + var B = dst.dot(ray.direction);
1.467 + var C = dst.dot(dst) - (this.radius * this.radius);
1.468 + var D = (B * B) - C;
1.469 +
1.470 + if(D > 0){ // intersection!
1.471 + info.isHit = true;
1.472 + info.distance = (-B) - Math.sqrt(D);
1.473 + info.position = Flog.RayTracer.Vector.prototype.add(
1.474 + ray.position,
1.475 + Flog.RayTracer.Vector.prototype.multiplyScalar(
1.476 + ray.direction,
1.477 + info.distance
1.478 + )
1.479 + );
1.480 + info.normal = Flog.RayTracer.Vector.prototype.subtract(
1.481 + info.position,
1.482 + this.position
1.483 + ).normalize();
1.484 +
1.485 + info.color = this.material.getColor(0,0);
1.486 + } else {
1.487 + info.isHit = false;
1.488 + }
1.489 + return info;
1.490 + },
1.491 +
1.492 + toString : function () {
1.493 + return 'Sphere [position=' + this.position + ', radius=' + this.radius + ']';
1.494 + }
1.495 +}
1.496 +/* Fake a Flog.* namespace */
1.497 +if(typeof(Flog) == 'undefined') var Flog = {};
1.498 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.499 +if(typeof(Flog.RayTracer.Shape) == 'undefined') Flog.RayTracer.Shape = {};
1.500 +
1.501 +Flog.RayTracer.Shape.Plane = Class.create();
1.502 +
1.503 +Flog.RayTracer.Shape.Plane.prototype = {
1.504 + d: 0.0,
1.505 +
1.506 + initialize : function(pos, d, material) {
1.507 + this.position = pos;
1.508 + this.d = d;
1.509 + this.material = material;
1.510 + },
1.511 +
1.512 + intersect: function(ray){
1.513 + var info = new Flog.RayTracer.IntersectionInfo();
1.514 +
1.515 + var Vd = this.position.dot(ray.direction);
1.516 + if(Vd == 0) return info; // no intersection
1.517 +
1.518 + var t = -(this.position.dot(ray.position) + this.d) / Vd;
1.519 + if(t <= 0) return info;
1.520 +
1.521 + info.shape = this;
1.522 + info.isHit = true;
1.523 + info.position = Flog.RayTracer.Vector.prototype.add(
1.524 + ray.position,
1.525 + Flog.RayTracer.Vector.prototype.multiplyScalar(
1.526 + ray.direction,
1.527 + t
1.528 + )
1.529 + );
1.530 + info.normal = this.position;
1.531 + info.distance = t;
1.532 +
1.533 + if(this.material.hasTexture){
1.534 + var vU = new Flog.RayTracer.Vector(this.position.y, this.position.z, -this.position.x);
1.535 + var vV = vU.cross(this.position);
1.536 + var u = info.position.dot(vU);
1.537 + var v = info.position.dot(vV);
1.538 + info.color = this.material.getColor(u,v);
1.539 + } else {
1.540 + info.color = this.material.getColor(0,0);
1.541 + }
1.542 +
1.543 + return info;
1.544 + },
1.545 +
1.546 + toString : function () {
1.547 + return 'Plane [' + this.position + ', d=' + this.d + ']';
1.548 + }
1.549 +}
1.550 +/* Fake a Flog.* namespace */
1.551 +if(typeof(Flog) == 'undefined') var Flog = {};
1.552 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.553 +
1.554 +Flog.RayTracer.IntersectionInfo = Class.create();
1.555 +
1.556 +Flog.RayTracer.IntersectionInfo.prototype = {
1.557 + isHit: false,
1.558 + hitCount: 0,
1.559 + shape: null,
1.560 + position: null,
1.561 + normal: null,
1.562 + color: null,
1.563 + distance: null,
1.564 +
1.565 + initialize : function() {
1.566 + this.color = new Flog.RayTracer.Color(0,0,0);
1.567 + },
1.568 +
1.569 + toString : function () {
1.570 + return 'Intersection [' + this.position + ']';
1.571 + }
1.572 +}
1.573 +/* Fake a Flog.* namespace */
1.574 +if(typeof(Flog) == 'undefined') var Flog = {};
1.575 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.576 +
1.577 +Flog.RayTracer.Camera = Class.create();
1.578 +
1.579 +Flog.RayTracer.Camera.prototype = {
1.580 + position: null,
1.581 + lookAt: null,
1.582 + equator: null,
1.583 + up: null,
1.584 + screen: null,
1.585 +
1.586 + initialize : function(pos, lookAt, up) {
1.587 + this.position = pos;
1.588 + this.lookAt = lookAt;
1.589 + this.up = up;
1.590 + this.equator = lookAt.normalize().cross(this.up);
1.591 + this.screen = Flog.RayTracer.Vector.prototype.add(this.position, this.lookAt);
1.592 + },
1.593 +
1.594 + getRay: function(vx, vy){
1.595 + var pos = Flog.RayTracer.Vector.prototype.subtract(
1.596 + this.screen,
1.597 + Flog.RayTracer.Vector.prototype.subtract(
1.598 + Flog.RayTracer.Vector.prototype.multiplyScalar(this.equator, vx),
1.599 + Flog.RayTracer.Vector.prototype.multiplyScalar(this.up, vy)
1.600 + )
1.601 + );
1.602 + pos.y = pos.y * -1;
1.603 + var dir = Flog.RayTracer.Vector.prototype.subtract(
1.604 + pos,
1.605 + this.position
1.606 + );
1.607 +
1.608 + var ray = new Flog.RayTracer.Ray(pos, dir.normalize());
1.609 +
1.610 + return ray;
1.611 + },
1.612 +
1.613 + toString : function () {
1.614 + return 'Ray []';
1.615 + }
1.616 +}
1.617 +/* Fake a Flog.* namespace */
1.618 +if(typeof(Flog) == 'undefined') var Flog = {};
1.619 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.620 +
1.621 +Flog.RayTracer.Background = Class.create();
1.622 +
1.623 +Flog.RayTracer.Background.prototype = {
1.624 + color : null,
1.625 + ambience : 0.0,
1.626 +
1.627 + initialize : function(color, ambience) {
1.628 + this.color = color;
1.629 + this.ambience = ambience;
1.630 + }
1.631 +}
1.632 +/* Fake a Flog.* namespace */
1.633 +if(typeof(Flog) == 'undefined') var Flog = {};
1.634 +if(typeof(Flog.RayTracer) == 'undefined') Flog.RayTracer = {};
1.635 +
1.636 +Flog.RayTracer.Engine = Class.create();
1.637 +
1.638 +Flog.RayTracer.Engine.prototype = {
1.639 + canvas: null, /* 2d context we can render to */
1.640 +
1.641 + initialize: function(options){
1.642 + this.options = Object.extend({
1.643 + canvasHeight: 100,
1.644 + canvasWidth: 100,
1.645 + pixelWidth: 2,
1.646 + pixelHeight: 2,
1.647 + renderDiffuse: false,
1.648 + renderShadows: false,
1.649 + renderHighlights: false,
1.650 + renderReflections: false,
1.651 + rayDepth: 2
1.652 + }, options || {});
1.653 +
1.654 + this.options.canvasHeight /= this.options.pixelHeight;
1.655 + this.options.canvasWidth /= this.options.pixelWidth;
1.656 +
1.657 + /* TODO: dynamically include other scripts */
1.658 + },
1.659 +
1.660 + setPixel: function(x, y, color){
1.661 + var pxW, pxH;
1.662 + pxW = this.options.pixelWidth;
1.663 + pxH = this.options.pixelHeight;
1.664 +
1.665 + if (this.canvas) {
1.666 + this.canvas.fillStyle = color.toString();
1.667 + this.canvas.fillRect (x * pxW, y * pxH, pxW, pxH);
1.668 + } else {
1.669 + if (x === y) {
1.670 + checkNumber += color.brightness();
1.671 + }
1.672 + // print(x * pxW, y * pxH, pxW, pxH);
1.673 + }
1.674 + },
1.675 +
1.676 + renderScene: function(scene, canvas){
1.677 + checkNumber = 0;
1.678 + /* Get canvas */
1.679 + if (canvas) {
1.680 + this.canvas = canvas.getContext("2d");
1.681 + } else {
1.682 + this.canvas = null;
1.683 + }
1.684 +
1.685 + var canvasHeight = this.options.canvasHeight;
1.686 + var canvasWidth = this.options.canvasWidth;
1.687 +
1.688 + for(var y=0; y < canvasHeight; y++){
1.689 + for(var x=0; x < canvasWidth; x++){
1.690 + var yp = y * 1.0 / canvasHeight * 2 - 1;
1.691 + var xp = x * 1.0 / canvasWidth * 2 - 1;
1.692 +
1.693 + var ray = scene.camera.getRay(xp, yp);
1.694 +
1.695 + var color = this.getPixelColor(ray, scene);
1.696 +
1.697 + this.setPixel(x, y, color);
1.698 + }
1.699 + }
1.700 + assertEq(checkNumber, 2321);
1.701 + },
1.702 +
1.703 + getPixelColor: function(ray, scene){
1.704 + var info = this.testIntersection(ray, scene, null);
1.705 + if(info.isHit){
1.706 + var color = this.rayTrace(info, ray, scene, 0);
1.707 + return color;
1.708 + }
1.709 + return scene.background.color;
1.710 + },
1.711 +
1.712 + testIntersection: function(ray, scene, exclude){
1.713 + var hits = 0;
1.714 + var best = new Flog.RayTracer.IntersectionInfo();
1.715 + best.distance = 2000;
1.716 +
1.717 + for(var i=0; i<scene.shapes.length; i++){
1.718 + var shape = scene.shapes[i];
1.719 +
1.720 + if(shape != exclude){
1.721 + var info = shape.intersect(ray);
1.722 + if(info.isHit && info.distance >= 0 && info.distance < best.distance){
1.723 + best = info;
1.724 + hits++;
1.725 + }
1.726 + }
1.727 + }
1.728 + best.hitCount = hits;
1.729 + return best;
1.730 + },
1.731 +
1.732 + getReflectionRay: function(P,N,V){
1.733 + var c1 = -N.dot(V);
1.734 + var R1 = Flog.RayTracer.Vector.prototype.add(
1.735 + Flog.RayTracer.Vector.prototype.multiplyScalar(N, 2*c1),
1.736 + V
1.737 + );
1.738 + return new Flog.RayTracer.Ray(P, R1);
1.739 + },
1.740 +
1.741 + rayTrace: function(info, ray, scene, depth){
1.742 + // Calc ambient
1.743 + var color = Flog.RayTracer.Color.prototype.multiplyScalar(info.color, scene.background.ambience);
1.744 + var oldColor = color;
1.745 + var shininess = Math.pow(10, info.shape.material.gloss + 1);
1.746 +
1.747 + for(var i=0; i<scene.lights.length; i++){
1.748 + var light = scene.lights[i];
1.749 +
1.750 + // Calc diffuse lighting
1.751 + var v = Flog.RayTracer.Vector.prototype.subtract(
1.752 + light.position,
1.753 + info.position
1.754 + ).normalize();
1.755 +
1.756 + if(this.options.renderDiffuse){
1.757 + var L = v.dot(info.normal);
1.758 + if(L > 0.0){
1.759 + color = Flog.RayTracer.Color.prototype.add(
1.760 + color,
1.761 + Flog.RayTracer.Color.prototype.multiply(
1.762 + info.color,
1.763 + Flog.RayTracer.Color.prototype.multiplyScalar(
1.764 + light.color,
1.765 + L
1.766 + )
1.767 + )
1.768 + );
1.769 + }
1.770 + }
1.771 +
1.772 + // The greater the depth the more accurate the colours, but
1.773 + // this is exponentially (!) expensive
1.774 + if(depth <= this.options.rayDepth){
1.775 + // calculate reflection ray
1.776 + if(this.options.renderReflections && info.shape.material.reflection > 0)
1.777 + {
1.778 + var reflectionRay = this.getReflectionRay(info.position, info.normal, ray.direction);
1.779 + var refl = this.testIntersection(reflectionRay, scene, info.shape);
1.780 +
1.781 + if (refl.isHit && refl.distance > 0){
1.782 + refl.color = this.rayTrace(refl, reflectionRay, scene, depth + 1);
1.783 + } else {
1.784 + refl.color = scene.background.color;
1.785 + }
1.786 +
1.787 + color = Flog.RayTracer.Color.prototype.blend(
1.788 + color,
1.789 + refl.color,
1.790 + info.shape.material.reflection
1.791 + );
1.792 + }
1.793 +
1.794 + // Refraction
1.795 + /* TODO */
1.796 + }
1.797 +
1.798 + /* Render shadows and highlights */
1.799 +
1.800 + var shadowInfo = new Flog.RayTracer.IntersectionInfo();
1.801 +
1.802 + if(this.options.renderShadows){
1.803 + var shadowRay = new Flog.RayTracer.Ray(info.position, v);
1.804 +
1.805 + shadowInfo = this.testIntersection(shadowRay, scene, info.shape);
1.806 + if(shadowInfo.isHit && shadowInfo.shape != info.shape /*&& shadowInfo.shape.type != 'PLANE'*/){
1.807 + var vA = Flog.RayTracer.Color.prototype.multiplyScalar(color, 0.5);
1.808 + var dB = (0.5 * Math.pow(shadowInfo.shape.material.transparency, 0.5));
1.809 + color = Flog.RayTracer.Color.prototype.addScalar(vA,dB);
1.810 + }
1.811 + }
1.812 +
1.813 + // Phong specular highlights
1.814 + if(this.options.renderHighlights && !shadowInfo.isHit && info.shape.material.gloss > 0){
1.815 + var Lv = Flog.RayTracer.Vector.prototype.subtract(
1.816 + info.shape.position,
1.817 + light.position
1.818 + ).normalize();
1.819 +
1.820 + var E = Flog.RayTracer.Vector.prototype.subtract(
1.821 + scene.camera.position,
1.822 + info.shape.position
1.823 + ).normalize();
1.824 +
1.825 + var H = Flog.RayTracer.Vector.prototype.subtract(
1.826 + E,
1.827 + Lv
1.828 + ).normalize();
1.829 +
1.830 + var glossWeight = Math.pow(Math.max(info.normal.dot(H), 0), shininess);
1.831 + color = Flog.RayTracer.Color.prototype.add(
1.832 + Flog.RayTracer.Color.prototype.multiplyScalar(light.color, glossWeight),
1.833 + color
1.834 + );
1.835 + }
1.836 + }
1.837 + color.limit();
1.838 + return color;
1.839 + }
1.840 +};
1.841 +
1.842 +
1.843 +function renderScene(){
1.844 + var scene = new Flog.RayTracer.Scene();
1.845 +
1.846 + scene.camera = new Flog.RayTracer.Camera(
1.847 + new Flog.RayTracer.Vector(0, 0, -15),
1.848 + new Flog.RayTracer.Vector(-0.2, 0, 5),
1.849 + new Flog.RayTracer.Vector(0, 1, 0)
1.850 + );
1.851 +
1.852 + scene.background = new Flog.RayTracer.Background(
1.853 + new Flog.RayTracer.Color(0.5, 0.5, 0.5),
1.854 + 0.4
1.855 + );
1.856 +
1.857 + var sphere = new Flog.RayTracer.Shape.Sphere(
1.858 + new Flog.RayTracer.Vector(-1.5, 1.5, 2),
1.859 + 1.5,
1.860 + new Flog.RayTracer.Material.Solid(
1.861 + new Flog.RayTracer.Color(0,0.5,0.5),
1.862 + 0.3,
1.863 + 0.0,
1.864 + 0.0,
1.865 + 2.0
1.866 + )
1.867 + );
1.868 +
1.869 + var sphere1 = new Flog.RayTracer.Shape.Sphere(
1.870 + new Flog.RayTracer.Vector(1, 0.25, 1),
1.871 + 0.5,
1.872 + new Flog.RayTracer.Material.Solid(
1.873 + new Flog.RayTracer.Color(0.9,0.9,0.9),
1.874 + 0.1,
1.875 + 0.0,
1.876 + 0.0,
1.877 + 1.5
1.878 + )
1.879 + );
1.880 +
1.881 + var plane = new Flog.RayTracer.Shape.Plane(
1.882 + new Flog.RayTracer.Vector(0.1, 0.9, -0.5).normalize(),
1.883 + 1.2,
1.884 + new Flog.RayTracer.Material.Chessboard(
1.885 + new Flog.RayTracer.Color(1,1,1),
1.886 + new Flog.RayTracer.Color(0,0,0),
1.887 + 0.2,
1.888 + 0.0,
1.889 + 1.0,
1.890 + 0.7
1.891 + )
1.892 + );
1.893 +
1.894 + scene.shapes.push(plane);
1.895 + scene.shapes.push(sphere);
1.896 + scene.shapes.push(sphere1);
1.897 +
1.898 + var light = new Flog.RayTracer.Light(
1.899 + new Flog.RayTracer.Vector(5, 10, -1),
1.900 + new Flog.RayTracer.Color(0.8, 0.8, 0.8)
1.901 + );
1.902 +
1.903 + var light1 = new Flog.RayTracer.Light(
1.904 + new Flog.RayTracer.Vector(-3, 5, -15),
1.905 + new Flog.RayTracer.Color(0.8, 0.8, 0.8),
1.906 + 100
1.907 + );
1.908 +
1.909 + scene.lights.push(light);
1.910 + scene.lights.push(light1);
1.911 +
1.912 + var imageWidth = 100; // $F('imageWidth');
1.913 + var imageHeight = 100; // $F('imageHeight');
1.914 + var pixelSize = "5,5".split(','); // $F('pixelSize').split(',');
1.915 + var renderDiffuse = true; // $F('renderDiffuse');
1.916 + var renderShadows = true; // $F('renderShadows');
1.917 + var renderHighlights = true; // $F('renderHighlights');
1.918 + var renderReflections = true; // $F('renderReflections');
1.919 + var rayDepth = 2;//$F('rayDepth');
1.920 +
1.921 + var raytracer = new Flog.RayTracer.Engine(
1.922 + {
1.923 + canvasWidth: imageWidth,
1.924 + canvasHeight: imageHeight,
1.925 + pixelWidth: pixelSize[0],
1.926 + pixelHeight: pixelSize[1],
1.927 + "renderDiffuse": renderDiffuse,
1.928 + "renderHighlights": renderHighlights,
1.929 + "renderShadows": renderShadows,
1.930 + "renderReflections": renderReflections,
1.931 + "rayDepth": rayDepth
1.932 + }
1.933 + );
1.934 +
1.935 + raytracer.renderScene(scene, null, 0);
1.936 +}
1.937 +
1.938 +renderScene();
