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HTML

              
                <svg id="db-anim" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1110 300" preserveAspectRatio="xMidYMin meet">
    
  <g class="paths">
    <path id="path-1" class="st0" d="M500 300V100h-300V0"/>
    <path id="path-2" class="st0" d="M500 300V100h-100V0"/>
    <path id="path-3" class="st0" d="M500 300V100h100V0"/>
    <path id="path-4" class="st0" d="M500 300V100h300V0"/>
  </g>
  
  <g class="paths02">
    <path id="pathA" class="alt-path" d="M500 300V300h-300V400"/>
    <path id="pathB" class="alt-path" d="M500 300V300h-100V400"/>
    <path id="pathC" class="alt-path" d="M500 300V300h100V400"/>
    <path id="pathD" class="alt-path" d="M500 300V300h300V400"/>
  </g>
  
  <g>
    <circle class="circle circle-1" cx="0" cy="0" r="10"/>
    <circle class="circle circle-2" cx="0" cy="0" r="10"/>
    <circle class="circle circle-3" cx="0" cy="0" r="10"/>
    <circle class="circle circle-4" cx="0" cy="0" r="10"/>
  </g>
  
</svg>

              
            
!

CSS

              
                #db-anim {
  position: fixed;
  width: 100%;
  height: 100%;
}

.st0, .alt-path {
  fill: none;
  stroke: #424142;
  stroke-width: 2;
  stroke-miterlimit: 10;
}

.circle {
  fill-opacity: 0.5;
  opacity: 0;
}

.circle-1 {
  fill: #d81b60;
}

.circle-2 {
  fill: #4caf50;
}

.circle-3 {
  fill: #2196F3;
}

.circle-4 {
  fill: #ff9800;
}

              
            
!

JS

              
                console.clear();

var numVariations = 10;
var pathOrder = [];
var pathLists = [];

var mainTl = new TimelineMax();

// Create an array of all the starting path values
var startPaths = $(".st0").toArray().map(function(element) {
  return MorphSVGPlugin.pathDataToBezier(element).reverse();
})

// Create an array of all the alternate path values
var altPaths = $(".alt-path").toArray().map(function(element) {
  var path = MorphSVGPlugin.pathDataToBezier(element);
  
  // Shift removes first point from the array
  // We don't need it as we will be combining this path with a 
  // start path
  path.shift();
  return path;
});

// Create an array of the path order (indexes) [0,1,2,3]
// And add an array to the pathLists array to hold
// the different path variations. pathLists will end up
// being an array of arrays
for (var i = 0; i < startPaths.length; i++) {
  pathOrder.push(i);
  pathLists.push([])
}

// Might be confusing. Shuffles the path order, then joins a 
// start path and alternate path together to create a random path variation
for (var i = 0; i < numVariations; i++) {
  
  shuffle(pathOrder);
  
  pathLists.forEach(function(pathList, index) {
    var path = startPaths[index].concat(altPaths[pathOrder[index]]);
    pathList.push(path)
  });
}

$(".circle").each(function(index, circle) {
  
  var motionPaths = pathLists[index];
    
  // Double index here because it's an array of arrays
  var start = motionPaths[0][0];
  
  TweenLite.set(circle, {
    autoAlpha: 1,
    x: start.x,
    y: start.y
  });
  
  var tl = new TimelineMax({
    repeat: -1
  });
  
  motionPaths.forEach(function(motionPath) {
    
    tl.set(circle, {
      x: start.x, 
      y: start.y
    })
    .to(circle, random(1.5, 2), {
      bezier: {
        values: motionPath,
        type: "cubic"
      },
      ease: Linear.easeNone
    })    
  })
  
  mainTl.add(tl, 0);
});

function random(min, max) {
  if (max == null) { max = min; min = 0; }
  if (min > max) { var tmp = min; min = max; max = tmp; }
  return min + (max - min) * Math.random();
}

function shuffle(array) {
  for (var i = array.length - 1; i > 0; i--) {
    var j = Math.floor(Math.random() * (i + 1));
    var temp = array[i];
    array[i] = array[j];
    array[j] = temp;
  }
  return array;
}
              
            
!
999px

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