1<!-- 2Copyright (c) 2012 Cameron Adams. All rights reserved. 3Copyright (c) 2012 Code Aurora Forum. All rights reserved. 4Copyright (C) 2013 Google Inc. All rights reserved. 5 6Redistribution and use in source and binary forms, with or without 7modification, are permitted provided that the following conditions are 8met: 9 * Redistributions of source code must retain the above copyright 10notice, this list of conditions and the following disclaimer. 11 * Redistributions in binary form must reproduce the above 12copyright notice, this list of conditions and the following disclaimer 13in the documentation and/or other materials provided with the 14distribution. 15 * Neither the name of Code Aurora Forum Inc., Google Inc. nor the 16names of its contributors may be used to endorse or promote products 17derived from this software without specific prior written permission. 18 19THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31This test is based on code written by Cameron Adams and imported from 32 http://themaninblue.com/experiment/AnimationBenchmark/html 33--> 34 35<!doctype html> 36<head> 37<title>Benchmark - Balls Animation using CSS and requestAnimationFrame</title> 38<style> 39html { 40 height: 100%; 41} 42 43body { 44 width: 100%; 45 height: 100%; 46 overflow: hidden; 47 margin: 0; 48 padding: 0; 49} 50 51span { 52 position: absolute; 53 width: 12px; 54 height: 12px; 55 border-radius: 6px; 56} 57</style> 58<script src="resources/perftesthelper.js"></script> 59<script> 60var measurementReady = false; 61var stageWidth = 600; 62var stageHeight = 600; 63var maxParticles = 2500; 64var minVelocity = 50; 65var maxVelocity = 500; 66var particleRadius = 6; 67var colors = ["#cc0000", "#ffcc00", "#aaff00", "#0099cc", "#194c99", "#661999"]; 68 69var testRunning = true; 70var particles = []; 71var prevTime; 72 73window.onload = function () { 74 // Create the particles 75 for (var i = 0; i < maxParticles; i++) 76 particles.push(new Particle()); 77 78 // Start the animation 79 prevTime = performance.now(); 80 animate(); 81 measurementReady = true; 82} 83 84function animate() 85{ 86 var currTime = performance.now(); 87 var timeDelta = currTime - prevTime; 88 89 // Draw each particle 90 for (var particle in particles) 91 particles[particle].draw(timeDelta); 92 93 prevTime = currTime; 94 95 if (testRunning) 96 requestAnimationFrame(animate); 97} 98 99function Particle() 100{ 101 var angle = Math.PI * 2 * PerfTestHelper.random(); 102 var velocity = minVelocity + ((maxVelocity - minVelocity) * PerfTestHelper.random()); 103 var x = stageWidth / 2 - particleRadius; 104 var y = stageHeight / 2 - particleRadius; 105 var dx = Math.cos(angle) * velocity; 106 var dy = Math.sin(angle) * velocity; 107 108 // Create visual element for the particle 109 var domNode = document.createElement('span'); 110 document.body.appendChild(domNode); 111 112 // Set initial position to middle of screen 113 domNode.style.left = x + "px"; 114 domNode.style.top = y + "px"; 115 116 // Set colour of element 117 domNode.style.backgroundColor = colors[Math.floor(PerfTestHelper.random() * colors.length)]; 118 119 function destroy() 120 { 121 document.body.removeChild(domNode); 122 } 123 124 function draw(timeDelta) 125 { 126 var timeDeltaSeconds = timeDelta / 1000; 127 var testX = x + (dx * timeDeltaSeconds); 128 var testY = y + (dy * timeDeltaSeconds); 129 130 if (testX < 0 || testX > stageWidth) { 131 dx = -dx; 132 x += dx; 133 } else { 134 x = testX; 135 } 136 if (testY < 0 || testY > stageHeight) { 137 dy = -dy; 138 y += dy; 139 } else { 140 y = testY; 141 } 142 143 domNode.style.left = x + "px"; 144 domNode.style.top = y + "px"; 145 } 146 147 this.draw = draw; 148 this.destroy = destroy; 149} 150</script> 151</head> 152</html> 153