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</svg>
<div id="slider"></div>

body {
 margin:0;
 background: #333;
}
svg {
  display: block;
  margin: 20px auto;
  width:400px;
}

#hippo, #elephant, #star{
  visibility:hidden;
}

#slider {
  width:420px;
  margin:20px auto;
}

/*
Try GreenSock's MorphSVGPlugin for free.
 
 - Press the Fork button
 - add your own SVG, JS and HTML
 - have fun.
 
 Learn more about MorphSVGPlugin here: https://greensock.com/morphSVG
 MorphSVGPlugin is a bonus plugin for Shocking Green and Business Green members: https://www.greensock.com/club

*/

var tl = gsap.timeline({onUpdate:updateSlider, defaults: {duration: 1}}),
    circle = document.getElementById("circle");

tl.to(circle, {morphSVG:"#hippo"}, "+=1")
  .to(circle, {morphSVG:"#star"}, "+=1")
  .to(circle, {morphSVG:"#elephant"}, "+=1")
  .to(circle, {morphSVG:circle}, "+=1");








/* controls */

$("#slider").slider({
  range: false,
  min: 0,
  max: 1,
  step:.001,
  slide: function ( event, ui ) {
    tl.progress( ui.value ).pause();
  },
  stop: function () {
    tl.play();
  }
});	

function updateSlider() {
  $("#slider").slider("value", tl.progress());
}