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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <link href='//fonts.googleapis.com/css?family=Signika+Negative:300,400,700' rel='stylesheet' type='text/css'>
<div id="demo">
<div id="controls">
	<form id="form">
        <li style="padding-left:16px;">
            <select id="engine" size="1">
                <option value="popmotion">Popmotion (JS)</option>
                <option value="gsap">GSAP (JS)</option>
                <option value="webanimations">Web Animations (JS)</option>
            <select id="properties" size="1">
              <option value="transforms">transform:translate(...) scale(...)</option>
            <select id="dotQuantity" size="1">
                <option value="25">25</option>
                <option value="50">50</option>
                <option value="100">100</option>
                <option value="200">200</option>
                <option value="300">300</option>
                <option value="400">400</option>
                <option value="500" selected="selected">500</option>
                <option value="750">750</option>
                <option value="1000">1000</option>
                <option value="1250">1250</option>
                <option value="1500">1500</option>
                <option value="2000">2000</option>
                <option value="2500">2500</option>
                <option value="3000">3000</option>
        <li><div id="start">START</div></li>
<div id="field">
  <div id="instructions"><h1>GSAP vs Popmotion Animation Speed Test</h1>
    <p>Forked from GreenSock's <a href="https://codepen.io/GreenSock/pen/srfxA">HTML5 Animation Speed Test</a></p>
    <p>Compare the animation performance of GSAP vs Popmotion 6.0 vs Web Animations.</p>

              body {
  background-color: black;
  font-family: Signika Negative, sans-serif;
  font-weight: 300;
  font-size: 1.15em;
html, body {
  height: 100%;
h1 {
  font-weight: 400;
  color: white;
a, a:hover, a:visited {
#controls {
  background: linear-gradient(to bottom,  #777 0%,#444 100%);
  padding:10px 10px 10px 5px;
#controls form li {
  padding:12px 6px 10px 6px;
  text-shadow: 1px 1px 1px #000;
#instructions {
  line-height: 1.5em;
  pointer-events: auto;
#demo {
#field {
  height: 100%;
  border-top: 1px solid #777;
#start {
  color: black;
  border-radius: 6px;
  padding: 5px 18px;
  border: 2px solid black;
  background: #9af600;
  background: linear-gradient(to bottom,  #9af600 0%,#71B200 100%);
  cursor: pointer;
  text-shadow: none;
  font-weight: 400;
              var $start = $("#start"),
    $dotQtyInput = $("#dotQuantity"),
    $engineInput = $("#engine"),
    $propertiesInput = $("#properties"),
    $instructions = $("#instructions"),
    $field = $("#field"),
    $window = $(window),
    $inputs = $("select"),
    inProgress = false,
    tests = {},
    duration, radius, centerX, centerY, dots, rawDots, currentTest,  startingCSS;

 * The goal of this test is to compare how various animation engines perform under pressure, taking relatively common
 * animation tasks and running a lot of them at once to see raw performance. The goal is NOT to figure out the most
 * efficient way to move dots in a starfield pattern.
 * The same code drives everything except the actual tweens themselves. Every test in the "tests"
 * object has 4 properties:
 * 		- milliseconds [boolean] - true if the duration should be defined in milliseconds
 * 		- wrapDot [function] - when each dot <img> is created, it is passed to the wrapDot() method
 * 							   and whatever is returned gets stored in the array of dots to tween. This
 * 							   is useful to improve performance of things like jQuery because
 * 							   instead of passing the dom element to the tween() method (which would require
 * 							   jQuery to then query the dom and wrap the element in an engine-specific object
 * 							   before calling animate() on it), a native object can be used. Basically it lets you
 * 							   cache the dot's wrapper for better performance.
 * 		- tween [function] - This is the core of the whole test. tween() is called for each dot, and the dot is
 * 							 passed as a parameter. The tween() function should set the dot's cssText to the
 * 							 startingCSS value (which just places the dot in the middle of the screen and sets its
 * 							 width/height to 1px) and then after a random delay between 0 and the duration of the tween,
 * 							 it should tween the dot at a random angle, altering either the left/top values or transform
 * 							 translate() values accordingly, and adjust the size to 32px wide/tall using either 
 * 							 width/height or transform:scale(). Then, after the tween is done, it should call the tween()
 * 							 method again for that dot. So the same dot will just continuously tween outward from the
 * 							 center at random angles and at random delay values.
 * 		- stop [function] - This function is called when the user stops the test. The dot is passed as a parameter.
 * 							The function should immediately stop/kill the tween(s) of that dot (or all dots - that's fine too).
 *  - nativeSize [Boolean] - true if the beginning width/height of the image should be its native size
 *                          (typically necessary for transforms, but not when we're animating width/height).
 * I don't claim to be an expert at the various other animation engines out there, so if there are optimizations
 * that could be made to make them run better, please let me know. I tried to keep things as fair as possible.
var scaleRange = [0.06, 2];
tests.popmotion_transforms = {
  wrapDot: function (dot) {
    return popmotion.css(dot);
  tween: function (dot) {
   // This function is overly-optimised for day-to-day
   // use - we're not usually animating 1000s of divs!
    var angle = Math.random() * Math.PI * 2;
    var mapScaleToX = popmotion.transform.interpolate(scaleRange, [0, Math.cos(angle) * radius]);
    var mapScaleToY = popmotion.transform.interpolate(scaleRange, [0, Math.sin(angle) * radius]);

    // Maintain mutable state to reduce jank - usually we
    // would just call `set` with a new object
    var dotStyles = {
      x: 0,
      y: 0,
      scale: 0
    function updateDotStyles(v) {
      dotStyles.x = mapScaleToX(v);
      dotStyles.y = mapScaleToY(v);
      dotStyles.scale = v;
    dot._animation = popmotion.chain([
      popmotion.delay(Math.random() * duration),
        from: scaleRange[0],
        to: scaleRange[1],
        duration: duration,
        ease: popmotion.easing.easeIn,
        onUpdate: updateDotStyles,
        onComplete: () => tests.popmotion_transforms.tween(dot)
  stop: function (dot) {
  nativeSize: true

//GSAP transforms (translate()/scale())
tests.gsap_transforms = {
  wrapDot:function(dot) {
    return dot; //no wrapping necessary
  tween:function(dot) {
    var angle = Math.random() * Math.PI * 2;
    TweenLite.set(dot, {css:{x:0, y:0, scale:0.06, force3D:true}, overwrite:"none"});
    TweenLite.to(dot, duration, {css:{x:(Math.cos(angle) * radius),
                                      y:(Math.sin(angle) * radius),
                                 delay:Math.random() * duration,
  stop:function(dot) {

//Web Animations (transforms)
tests.webanimations_transforms = {
	wrapDot:function(dot) {
		return dot; //no wrapping necessary
	tween:function(dot) {
		dot.style.cssText = startingCSS + " transform: scale(0.06); -webkit-transform: scale(0.06);";
		var angle = Math.random() * Math.PI * 2,
			delay = Math.random() * duration,
			anim = dot.anim = dot.animate([{transform:"translate(0px, 0px) scale(0.06)"}, {
					transform:"translate(" + (Math.cos(angle) * radius) + "px, " + (Math.sin(angle) * radius) + "px) scale(2)"
				}], {duration: duration, delay: delay, fill:"forwards", easing:"cubic-bezier(0.550, 0.055, 0.675, 0.190)"});
		anim.onfinish = function() {
	stop:function(dot) {
		dot.anim.onfinish = null; //otherwise it'll call the onfinish when cancelled, and the loop will continue.

function toggleTest() {
  var i, size;
  inProgress = !inProgress;
  if (inProgress) {
    $inputs.prop("disabled", true);
    $field.css({pointerEvents:"none"}); //improve performance - ignore pointer events during animation
    $start.html(" STOP ");
    TweenLite.to($instructions, 0.7, {autoAlpha:0, overwrite:"all"});
    currentTest = tests[$engineInput.val() + "_" + $propertiesInput.val()];
    size = (currentTest.nativeSize ? "16px" : "1px");
    centerX = $field.width() / 2;
    centerY = $field.height() / 2;
    startingCSS = "position:absolute; left:" + centerX + "px; top:" + centerY + "px; width:" + size + "; height:" + size + ";";
    radius = Math.sqrt(centerX * centerX + centerY * centerY);
    duration = currentTest.milliseconds ? 750 : 0.75;
    //we wait a millisecond before creating the dots and starting to animate them so that the UI renders first (making the "start" button say "stop"), otherwise users could be confused when there's a long pause when you choose Zepto and transforms due to the fact that it can take a while for the browser to put all the dots on their own layers.
    setTimeout(function() {
      i = dots.length;
      while (--i > -1) {
    }, 1);
  } else {
    $start.html(" START ");
    $start.css({backgroundColor:"#9af600", background: "linear-gradient(to bottom, #9af600 0%,#71B200 100%"});
    TweenLite.to($instructions, 0.7, {autoAlpha:1, delay:0.2});
    $inputs.prop("disabled", false);
    //stop the tweens and remove the dots.
    i = dots.length;
    while (--i > -1) {
      $field[0].removeChild(rawDots[i]); //removes dot(s)
    dots = null;
    rawDots = null;

function createDots() {
  var i = parseInt($dotQtyInput.val()),
  dots = [];
  rawDots = [];
  while (--i > -1) {
    dot = document.createElement("img");
    dot.src = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/16327/dot.png";
    dot.width = 1;
    dot.height = 1;
    dot.id = "dot" + i;
    dot.style.cssText = startingCSS;

function calibrateInputs(e) {
  if ($engineInput.val() === "jquery") { //jQuery cannot animate transforms without a 3rd party plugin, so disable that option
    $propertiesInput[0].selectedIndex = 0;
    $propertiesInput.prop("disabled", true);
  } else {
    $propertiesInput.prop("disabled", false);

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