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                <div id="wrap">
  <div class="description" id="step1"><strong>Step 1:</strong> use <code>getBBox()</code> to calculate the x/y offsets from the SVG's 0,0 coordinates to the desired transform origin. In this case, it's x:300, y:100 (white dot).</div>
<div class="description" id="step2"><strong>Step 2:</strong> to normalize behavior among browsers, set <code>transform-origin: 0px 0px</code> (blue dot)</div>
<div class="description" id="step3"><strong>Step 3:</strong> on each tick of the animation, update the transform value (in this case, rotation). Notice the center has drifted from the desired origin.</div>
<div class="description" id="step4"><strong>Step 4:</strong> adjust the position of the rectangle (using x and y portions of the transform matrix) to align with the desired origin (white dot). This is all seamless during the animation.</div>

<svg version="1.1" id="container" class="container" width="550" height="300"  xmlns="" xmlns:xlink="" viewBox="0 0 550 300" xml:space="preserve">
  <g id="rectWithOffset">
  <rect id="rect" class="animated-rectangle" x="100" y="50" width="400" height="100" fill="#91e600" />
  <line id="offset" x1="0" y1="0" x2="300" y2="100" stroke="#cc00cc" stroke-width="10" stroke-dasharray="317" stroke-linecap="round" stroke-linejoin="round" stroke-dashoffset="317" />
  <circle id="realOrigin" cx="300" cy="100" r="12" fill="#0077FF" style="visibility:hidden" />
  <circle id="origin" cx="300" cy="100" r="12" fill="#FFFFFF" />
  <text y="280" x="275" width="550" id="originText" text-anchor="middle">Desired transform-origin: 50% 50%</text>

<button id="next" class="dark-grey-button club-demo-button">next</button>



                body {
  background-color: black;
  margin: 0;
  padding: 0;
  color: #ccc;
  font-family: Arial, sans-serif;
  font-size: 20px;
  text-align: center;
#wrap {
  width: 555px;
  height: 420px;
  padding: 12px 0 0 12px;
  overflow: hidden;
  text-align: left;
  display: inline-block;
#originText {
  color: white;
  fill: white;
  font-family: monospace;
.description {
  width: 550px;
  position: absolute;

#container {
  overflow: hidden;
  border: 2px solid #555;
  margin-top: 16px;
  position: relative;
  top: 100px;
code, strong {
  color: white;
#next {
  position: absolute;
  top: 87px;
  left: 502px;



                var master = new TimelineMax();
master.add(step1(), "step1")
  .addLabel("step2", "-=1")
  .addPause("step2", inviteNext)
  .add(step2(), "step2+=0.3")
  .addLabel("step3", "-=1")
  .addPause("step3", inviteNext)
  .add(step3(), "step3+=0.3")
  .addLabel("step4", "-=1")
  .addPause("step4", inviteNext)
  .add(step4(), "step4+=0.3");

var flashingNext = new TimelineMax({repeat:-1, repeatDelay:5, paused:true});"#next", 0.12, {opacity:0, repeat:5, yoyo:true});
function inviteNext() {

$("#next").click(function() {
  if (master.progress() === 1) {
  } else if (!master.paused()) { master.getLabelAfter( master.time() ) + "+=0.001" ); //add a little time, otherwise it'll run into the addPause() and pause right away.
  } else {;

function step1() {
  var tl = new TimelineLite();
  tl.from("#step1", 0.5, {autoAlpha:0})
    .to("#offset", 1.5, {attr:{"stroke-dashoffset":0}, ease:Linear.easeNone})
    .from("#origin", 0.5, {attr:{r:0}})
    .to("#step1", 0.7, {autoAlpha:0, x:-100}, "+=2.5");
  return tl;
function step2() {
  var tl = new TimelineLite();
  tl.from("#step2", 0.7, {autoAlpha:0, x:100})
    .to("#realOrigin", 2, {attr:{cx:0, cy:0}, visibility:"visible", ease:Power1.easeInOut})
    .to("#step2", 0.7, {autoAlpha:0, x:-100}, "+=2");
  return tl;
function step3() {
  var tl = new TimelineLite();
  tl.from("#step3", 0.7, {autoAlpha:0, x:100})
    .to("#rectWithOffset", 2.5, {rotation:20, transformOrigin:"-100px -50px", force3D:true, ease:Power1.easeInOut}, "rotate")
    .to("#offset", 2.5, {rotation:20, force3D:true, ease:Power1.easeInOut}, "rotate")
    .to("#step3", 0.7, {autoAlpha:0, x:-100}, "+=3");
  return tl;
function step4() {
  var tl = new TimelineLite();
  tl.from("#step4", 0.7, {autoAlpha:0, x:100})
    .to("#rectWithOffset", 1.5, {x:52.294, y: -96.575, ease:Power1.easeInOut})
    .to("#next", 0.5, {text:"restart", x:-26})
    .to("#offset, #realOrigin", 0.5, {opacity:0}, "+=1")  
    .to("#rect", 2, {rotation:340, transformOrigin:"50% 50%", ease:Power1.easeInOut}, "-=0.5");
  return tl;