browser/metro/base/tests/mochiperf/res/ripples.html@7e26c7da4463
browser/metro/base/tests/mochiperf/res/ripples.html
Wed, 31 Dec 2014 06:55:50 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:55:50 +0100
- changeset 2
- 7e26c7da4463
- permissions
- -rw-r--r--
Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2
1 <!DOCTYPE html>
2 <html>
3 <head>
4 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
5 <script type="text/javascript">
7 var ripples = {
8 frame: 0,
10 get frames() {
11 return this.frame;
12 },
14 // Size of buffer.
15 width: 80,
16 height: 80,
18 // Render size.
19 renderWidth: 1200,
20 renderHeight: 700,
22 // Canvas size.
23 canvasWidth: 1200,
24 canvasHeight: 700,
26 // Ripple start points.
27 ripplePoints: [
28 {x:0.5,y:0.5,start:0},
29 {x:0.2,y:0.3,start:0},
30 {x:0.7,y:0.6,start:0},
31 {x:0.2,y:0.2,start:4000},
32 {x:0.7,y:0.2,start:6000},
33 {x:0.2,y:0.8,start:8000},
34 {x:0.5,y:0.3,start:12000},
35 {x:0.2,y:0.6,start:16000},
36 {x:0.8,y:0.2,start:20000},
37 {x:0.3,y:0.8,start:24000},
38 {x:0.6,y:0.2,start:28000}
39 ],
41 a: false, // previous frame
42 b: false, // frame before previous frame
44 pixelWidth: 0,
45 pixelHeight: 0,
47 init: function() {
48 // Get start time.
49 var d = new Date();
50 this.startTime = d.getTime();
52 // Pixel sizes.
53 this.pixelWidth = Math.floor(this.renderWidth / this.width);
54 this.pixelHeight = Math.floor(this.renderHeight / this.height);
56 // Top left corner position of the rendered effect.
57 this.xPosition = this.canvasWidth / 2 - (this.pixelWidth * this.width) / 2;
58 this.yPosition = this.canvasHeight / 2 - (this.pixelHeight * this.height) / 2;
61 // Init canvas.
62 var canvas = document.getElementById('ripples');
63 this.ctx = canvas.getContext('2d');
65 // Create buffers.
66 this.a = new Buffer(this.width, this.height);
67 this.b = new Buffer(this.width, this.height);
69 },
71 processBuffers: function() {
72 var damping = 0.02;
73 for (var x = 2; x < this.width - 2; x++) {
74 for (var y = 2; y < this.height - 2; y++) {
75 this.b.set(x, y,
76 (
77 this.a.get(x - 2, y)
78 + this.a.get(x + 2, y)
79 + this.a.get(x, y - 2)
80 + this.a.get(x, y + 2)
81 + this.a.get(x - 1, y)
82 + this.a.get(x + 1, y)
83 + this.a.get(x, y - 1)
84 + this.a.get(x, y + 1)
85 + this.a.get(x - 1, y - 1)
86 + this.a.get(x + 1, y + 1)
87 + this.a.get(x + 1, y - 1)
88 + this.a.get(x - 1, y + 1)
89 ) / 12 * 2 - this.b.get(x, y));
90 this.b.set(x, y, this.b.get(x, y) - this.b.get(x, y) * damping);
91 }
92 }
93 },
95 render: function() {
97 for (var x = 2; x < this.width - 2; x++) {
98 for (var y = 2; y < this.height - 2; y++) {
100 var color = this.b.get(x, y);
102 var progress = color / 256;
103 var rMin = 0, rMax = 255,
104 gMin = 0, gMax = 255,
105 bMin = 0, bMax = 255;
107 var rDelta = (rMax - rMin) / 2;
108 var rValue = Math.round(rMin + rDelta + rDelta * progress);
109 var gDelta = (gMax - gMin) / 2;
110 var gValue = Math.round(gMin + gDelta + gDelta * progress);
111 var bDelta = (bMax - bMin) / 2;
112 var bValue = Math.round(bMin + bDelta + bDelta * progress);
113 this.ctx.fillStyle = "rgb("+rValue+", "+gValue+", "+bValue+")";
114 this.ctx.fillRect(this.xPosition + x * this.pixelWidth,
115 this.yPosition + y * this.pixelHeight,
116 this.pixelWidth,
117 this.pixelHeight);
118 }
119 }
120 },
122 swapBuffers: function() {
123 var c = this.b;
124 this.b = this.a;
125 this.a = c;
126 },
128 clear: function() {
129 this.ctx.clearRect(0, 0, this.width, this.height);
130 },
132 addRipple: function(time) {
134 var ripplePoints = new Array();
135 for (var i = 0; i < this.ripplePoints.length; i++) {
136 if (this.ripplePoints[i].start < time) {
137 this.a.sphere(
138 Math.floor(this.width * this.ripplePoints[i].x),
139 Math.floor(this.height * this.ripplePoints[i].y),
140 Math.floor(this.width * 0.1), 256);
141 } else {
142 ripplePoints.push(this.ripplePoints[i]);
143 }
144 }
145 this.ripplePoints = ripplePoints;
147 },
149 run: function(time) {
150 this.clear();
151 this.addRipple(time);
152 this.processBuffers();
153 this.render();
154 this.swapBuffers();
155 this.frame++;
156 }
157 }
159 function Buffer(newWidth, newHeight) {
160 this.width = newWidth;
161 this.height = newHeight;
162 this.data = new Array();
164 for (var x = 0; x < this.width; x++) {
165 this.data[x] = new Array();
166 for (var y = 0; y < this.height; y++) {
167 this.data[x][y] = 0;
168 }
169 }
171 this.sphere = function(sphereX, sphereY, radius, depth) {
172 for (var x = 0; x < this.width; x++) {
173 for (var y = 0; y < this.height; y++) {
174 var d = this.distance(sphereX, sphereY, x, y);
175 if (d < radius) {
176 this.data[x][y] = this.data[x][y] + depth * ((radius - Math.sqrt(d)) / radius);
177 //this.data[x][y] = this.data[x][y] + Math.round((1 - d / radius) * 256);
178 if (this.data[x][y] > 256) this.data[x][y] = 256;
179 }
180 }
181 }
182 }
184 this.ripple = function(sphereX, sphereY, radius) {
185 for (var x = 0; x < this.width; x++) {
186 for (var y = 0; y < this.height; y++) {
187 var d = this.distance(sphereX, sphereY, x, y);
188 if (d < radius) {
189 this.set(x, y, Math.sin((d / radius) * Math.PI) * 70);//Math.round((1 - d / radius) * 256);
190 }
191 }
192 }
193 }
195 this.hardRipple = function(sphereX, sphereY, radius) {
196 for (var x = 0; x < this.width; x++) {
197 for (var y = 0; y < this.height; y++) {
198 var d = this.distance(sphereX, sphereY, x, y);
199 if (d < radius && d > radius * 0.8) {
200 this.set(x, y, 256);//Math.round((1 - d / radius) * 256);
201 }
202 }
203 }
204 }
206 this.distance = function(x1, y1, x2, y2) {
207 return Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));
208 }
210 this.get = function(x, y) {
211 if (typeof(this.data[x]) != "undefined" && typeof(this.data[x][y]) != "undefined") {
212 return this.data[x][y];
213 } else {
214 return 0;
215 }
216 }
218 this.set = function(x, y, value) {
219 if (typeof(this.data[x]) != "undefined" && typeof(this.data[x][y]) != "undefined") {
220 this.data[x][y] = Math.round(value);
221 }
222 }
223 }
225 function run() {
226 ripples.init();
227 var now = new Date();
228 var start = window.mozAnimationStartTime;
229 function step(timestamp) {
230 progress = timestamp - start;
231 ripples.run(progress);
232 var time = new Date();
233 var diff = time.getTime() - now.getTime();
234 if (diff < 5000) { // five seconds
235 window.mozRequestAnimationFrame(step);
236 } else {
237 var evt = document.createEvent("CustomEvent");
238 evt.initCustomEvent("test", true, false, { testName: "ripples", frames: ripples.frames, msec: diff });
239 window.dispatchEvent(evt);
240 }
241 }
242 window.mozRequestAnimationFrame(step);
243 }
245 </script>
246 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
247 <style>
248 </style>
249 <meta charset="utf-8">
250 </head>
251 <body onload="setTimeout(run, 1000);">
252 <div id="anchor"><canvas id="ripples" width="1200" height="700"></canvas></div>
253 </body>
254 </html>
