tools/perf/page_sets/tough_animation_cases/balls_svg_animations.html

   1 <!--
   2 Copyright (c) 2012 Cameron Adams. All rights reserved.
   3 Copyright (c) 2012 Code Aurora Forum. All rights reserved.
   4 Copyright (C) 2013 Google Inc. All rights reserved.
   5
   6 Redistribution and use in source and binary forms, with or without
   7 modification, are permitted provided that the following conditions are
   8 met:
   9     * Redistributions of source code must retain the above copyright
  10 notice, this list of conditions and the following disclaimer.
  11     * Redistributions in binary form must reproduce the above
  12 copyright notice, this list of conditions and the following disclaimer
  13 in the documentation and/or other materials provided with the
  14 distribution.
  15     * Neither the name of Code Aurora Forum Inc., Google Inc. nor the
  16 names of its contributors may be used to endorse or promote products
  17 derived from this software without specific prior written permission.
  18
  19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31 This 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 SVG Animations</title>
  38 <style>
  39 html {
  40     height: 100%;
  41 }
  42
  43 body {
  44     width: 100%;
  45     height: 100%;
  46     overflow: hidden;
  47     margin: 0;
  48     padding: 0;
  49 }
  50
  51 span {
  52     position: absolute;
  53     width: 12px;
  54     height: 12px;
  55     border-radius: 6px;
  56 }
  57 </style>
  58 <script src="resources/perf_test_helper.js"></script>
  59 <script>
  60 var measurementReady = false;
  61 var stageWidth = 600;
  62 var stageHeight = 600;
  63 var maxParticles = 2500;
  64 var minVelocity = 50;
  65 var maxVelocity = 500;
  66 var particleRadius = 6;
  67 var colors = ["#cc0000", "#ffcc00", "#aaff00", "#0099cc", "#194c99", "#661999"];
  68 var animationDuration = 10;
  69
  70 var particles = [];
  71
  72 window.onload = function () {
  73     svgContainer.setAttribute('width', stageWidth);
  74     svgContainer.setAttribute('height', stageHeight);
  75
  76     for (var i = 0; i < maxParticles; i++)
  77         addParticle();
  78
  79     measurementReady = true;
  80 }
  81
  82 function addParticle()
  83 {
  84     var circle = document.createElementNS('http://www.w3.org/2000/svg','circle');
  85     circle.setAttribute('r', particleRadius);
  86     circle.setAttribute('fill', colors[Math.floor(PerfTestHelper.random() * colors.length)]);
  87     addAnimation(circle);
  88     svgContainer.appendChild(circle);
  89 }
  90
  91 function addAnimation(target) {
  92     var angle = Math.PI * 2 * PerfTestHelper.random();
  93     var velocity = minVelocity + ((maxVelocity - minVelocity) * PerfTestHelper.random());
  94     var x = stageWidth / 2 - particleRadius;
  95     var y = stageHeight / 2 - particleRadius;
  96     var dx = Math.cos(angle) * velocity;
  97     var dy = Math.sin(angle) * velocity;
  98     var prevX = x;
  99     var prevY = y;
 100
 101     function detectCollision(lineX, normalX, lineY, normalY) {
 102         var dtx = Infinity;
 103         var dty = Infinity;
 104         if (dx * normalX < 0)
 105             dtx = (lineX - x) / dx;
 106         if (dy * normalY < 0)
 107             dty = (lineY - y) / dy;
 108         var dt = Math.min(dtx, dty);
 109         var hitX = (dtx < dty);
 110         return {
 111             dt: dt,
 112             x: hitX ? lineX : x + (dx * dt),
 113             y: hitX ? y + (dy * dt) : lineY,
 114             dx: hitX ? -dx : dx,
 115             dy: hitX ? dy : -dy,
 116         };
 117     }
 118
 119     var t = 0;
 120     var prevT = t;
 121     while (t < animationDuration) {
 122         var collisionA = detectCollision(0, 1, 0, 1);
 123         var collisionB = detectCollision(stageWidth, -1, stageHeight, -1);
 124         var collision = collisionA.dt < collisionB.dt ? collisionA : collisionB;
 125         if (t + collision.dt > animationDuration) {
 126             var dt = animationDuration - t;
 127             t = animationDuration;
 128             x += dx * dt;
 129             y += dy * dt;
 130         } else {
 131             t += collision.dt;
 132             x = collision.x;
 133             y = collision.y;
 134             dx = collision.dx;
 135             dy = collision.dy;
 136         }
 137         target.appendChild(generateTransition(prevT, prevX, prevY, t, x, y));
 138         prevX = x;
 139         prevY = y;
 140         prevT = t;
 141     }
 142     if (target.lastChild) {
 143         target.lastChild.setAttribute('repeatCount', '1000');
 144     }
 145 }
 146
 147 function generateTransition(prevT, prevX, prevY, t, x, y) {
 148     var animation = document.createElementNS('http://www.w3.org/2000/svg','animateTransform');
 149     animation.setAttribute('attributeName', 'transform');
 150     animation.setAttribute('attributeType', 'xml');
 151     animation.setAttribute('type', 'translate' );
 152     animation.setAttribute('from', prevX + ' ' + prevY);
 153     animation.setAttribute('to', x + ' ' + y);
 154     animation.setAttribute('begin', prevT + 's');
 155     animation.setAttribute('dur', (t - prevT) + 's');
 156     return animation;
 157 }
 158 </script>
 159 </head>
 160 <svg ns="http://www.w3.org/2000/svg" version="1.1" id="svgContainer"></svg>
 161 </html>