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SVG Displacement Map

A Pen By Blake Bowen Pro

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HTML

            
              <svg>
  <defs>       
    <filter id="ripple-filter">                  
      <feImage x="250" y="250" width="0%" height="0%" result="rippleImage" /> 
      
      <feDisplacementMap id="displacement-map"
                         xChannelSelector="R" 
                         yChannelSelector="G" 
                         in="SourceGraphic" 
                         in2="rippleImage"
                         result="displacementMap"
                         color-interpolation-filters="sRGB"
                         scale="0" />

      <feComposite operator="in" in2="rippleImage"></feComposite>
    </filter>    
  </defs>

  <g id="logo">
    <image id="logo-image" 
           width="500" 
           height="500" 
           xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/106114/greensock-logo.png" />

    <image id="logo-overlay" 
           width="500" 
           height="500" 
           xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/106114/greensock-logo.png" 
           filter="url(#ripple-filter)" />
  </g> 
</svg>
!

CSS

            
              html, body {
  height: 100%;
}

body {
  background: black;
}

svg {
  width: 500px;
  height: 500px;
  top: 50%;
  left: 50%;
  position: relative;
  transform: translate(-50%, -50%);
}
!

JS

            
              // Thanks to Michael Mullany for explaining the problems with the other browsers.
// Inlining the base64 was too large, so I just made a function to create and 
// add it to the feImage attribute. A little more code, but it works!


var xlink   = "http://www.w3.org/1999/xlink";
var imgUrl  = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/106114/ripple512.png";
var feImage = document.querySelector("feImage");

toBase64(imgUrl, function(data) {

  feImage.setAttributeNS(xlink, "xlink:href", data);

  var tl = new TimelineMax({ repeat: -1, repeatDelay: 1 });

  tl.from("#displacement-map", 1.5, { attr: { scale: 100 }}, 0)
    .to("feImage", 1.5, { attr: { x: -125, y: -125, width: "150%", height: "150%" }}, 0);
});


function toBase64(url, callback){
  
  var img = new Image();
  img.crossOrigin = "anonymous";
  img.onload = function(){
    var canvas = document.createElement("canvas");
    var ctx = canvas.getContext("2d");
    canvas.height = this.height;
    canvas.width = this.width;
    ctx.drawImage(this, 0, 0);
    
    var dataURL = canvas.toDataURL("image/png");
    callback(dataURL);
    canvas = null; 
  };
  
  img.src = url;
}
!
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