| OLD | NEW |
|---|
| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <meta name="viewport" content="width=device-width, user-scalable=no"> | 2 <meta name="viewport" content="width=device-width, user-scalable=no"> |
| 3 <link rel="stylesheet" type="text/css" href="resources/tablet.css"> | 3 <link rel="stylesheet" type="text/css" href="resources/tablet.css"> |
| 4 <script src="resources/perftesthelper.js"></script> | 4 <script src="resources/perftesthelper.js"></script> |
| 5 <script src="resources/web_animations_api_check.js"></script> | |
| 6 <style> | 5 <style> |
| 7 target { | 6 target { |
| 8 position: absolute; | 7 position: absolute; |
| 9 width: 0px; | 8 width: 0px; |
| 10 height: 0px; | 9 height: 0px; |
| 11 border: 5px solid green; | 10 border: 5px solid green; |
| 12 border-radius: 100%; | 11 border-radius: 100%; |
| 13 } | 12 } |
| 14 </style> | 13 </style> |
| 15 | 14 |
| 16 <container id="container"></container> | 15 <container id="container"></container> |
| 17 | 16 |
| 18 <script> | 17 <script> |
| 19 var N = PerfTestHelper.getN(1000); | 18 var N = PerfTestHelper.getN(1000); |
| 20 var numKeyframes = 500; | 19 var numKeyframes = 500; |
| 21 var duration = 4000; | 20 var duration = 4000; |
| 22 | 21 |
| 23 function makeKeyframes(numKeyframes, width, height) { | 22 function makeKeyframes(numKeyframes, width, height) { |
| 24 var keyframes = []; | 23 var keyframes = '@-webkit-keyframes anim {\n' |
| 25 for (var i = 0; i < numKeyframes + 1; i++) { | 24 for (var i = 0; i < numKeyframes + 1; i++) { |
| 26 var fraction = i / numKeyframes; | 25 var fraction = i / numKeyframes; |
| 27 var t = fraction * 2 * Math.PI; | 26 var t = fraction * 2 * Math.PI; |
| 28 var x = Math.cos(t) - Math.pow(Math.cos(4 * t), 3); | 27 var x = Math.cos(t) - Math.pow(Math.cos(4 * t), 3); |
| 29 x = ((x / 4 + 1 / 2) * width).toFixed(5); | 28 x = ((x / 4 + 1 / 2) * width).toFixed(5); |
| 30 var y = Math.pow(Math.sin(4 * t), 3) - Math.sin(2 * t); | 29 var y = Math.pow(Math.sin(4 * t), 3) - Math.sin(2 * t); |
| 31 y = ((y / 4 + 1 / 2) * height).toFixed(5); | 30 y = ((y / 4 + 1 / 2) * height).toFixed(5); |
| 32 keyframes.push({transform: 'translate(' + x + 'px, ' + y + 'px)'}); | 31 keyframes += (fraction * 100) + '% { transform: translate(' + x + 'px, ' + y
+ 'px); }\n'; |
| 33 } | 32 } |
| 34 return keyframes; | 33 return keyframes; |
| 35 } | 34 } |
| 36 | 35 |
| 37 requestAnimationFrame(function() { | 36 var style = document.createElement('style'); |
| 38 var keyframes = makeKeyframes(numKeyframes, 550, 800); | 37 style.textContent = makeKeyframes(numKeyframes, 550, 800); |
| 39 for (var i = 0; i < N; i++) { | 38 |
| 40 var target = document.createElement('target'); | 39 for (var i = 0; i < N; i++) { |
| 41 container.appendChild(target); | 40 var target = document.createElement('target'); |
| 42 target.animate(keyframes, {duration: duration, iterations: Infinity, delay:
-duration / 10 * i / N}); | 41 target.style.webkitAnimation = 'anim ' + duration + 'ms linear infinite ' + (-
duration / 10 * i / N) + 'ms'; |
| 43 } | 42 container.appendChild(target); |
| 44 }); | 43 } |
| 44 |
| 45 container.appendChild(style); |
| 45 | 46 |
| 46 PerfTestHelper.signalReady(); | 47 PerfTestHelper.signalReady(); |
| 47 </script> | 48 </script> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 665833002:
Add CSS Animations performance tests (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master