Draggable Images

Experimenting with draggable and resizable images in D3. Unfortunately, using a clip-path to put the images within circles causes some problems with resizing.

TODO:

Implement something like this

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    
    svg {
      background-color: #fffbef;
    }
    .circle-outline {
      fill: none;
      stroke: #dbdbdb;
      stroke-width: 2;
    }
  </style>
</head>

<body>
  <script>
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
    
    var image = {
      size: 100
    }
    
    var defs = svg.append("defs");
    
    var clipPath = defs.append("clipPath")
      .attr("id", "clip")
      .append("circle")
      .attr("cx", image.size / 2)
      .attr("cy", image.size / 2)
      .attr("r", image.size / 2);
    
    var glow = defs.append("filter")
    	.attr("id", "glow");
    glow.append("feGaussianBlur")
      .attr("class", "blur")
      .attr("stdDeviation", 3.5)
      .attr("result","coloredBlur");
    
    var feMergeGlow = glow.append("feMerge");
    feMergeGlow.append("feMergeNode")
      .attr("in","coloredBlur");
    feMergeGlow.append("feMergeNode")
      .attr("in","SourceGraphic");
    
    var doctorUrl1 = "https://68.media.tumblr.com/avatar_52ce5b752efa_128.png",
        doctorUrl2 = "https://curbsideprophecies.files.wordpress.com/2007/08/davidolder.thumbnail.png",
        doctorUrl3 = "https://68.media.tumblr.com/avatar_fde0361fb75d_128.png",
        doctorUrl4 = "https://68.media.tumblr.com/avatar_91eba9afde80_128.png";
    
    appendDraggableImage(doctorUrl1, [70, 175]);
    appendDraggableImage(doctorUrl2, [310, 175]);
    appendDraggableImage(doctorUrl3, [550, 175]);
    appendDraggableImage(doctorUrl4, [790, 175]);
    
    function appendDraggableImage(url, position) {
      var imageGroup = svg.append("g")
      	.datum({position: position})
        .attr("transform", d => "translate(" + d.position + ")");

var circleFill = imageGroup.append("circle")
      	.attr("class", "circle-fill")
        .attr("cx", image.size / 2)
        .attr("cy", image.size / 2 )
        .attr("r", image.size / 2)
        .attr("filter", "url(#glow");

var imageElem = imageGroup.append("image")
        .attr("xlink:href", url)
        .attr("height", image.size)
        .attr("width", image.size)
        .attr("clip-path", "url(#clip)");
    
      var circleOutline = imageGroup.append("circle")
        .attr("class", "circle-outline")
        .attr("cx", image.size / 2)
        .attr("cy", image.size / 2 )
        .attr("r", 1 + image.size / 2);

imageGroup.call(d3.drag()
                .on("start", dragstarted)
                .on("drag", dragged)
                .on("end", dragended));
      
    }
    
    function dragstarted(d) {
//       d3.select(this).raise();
      
//       d3.select(this).select(".circle-outline")
//       	.transition()
//       	.attr("r", 1 + image.size / 3);
      
//       d3.select(this).select(".circle-fill")
//       	.transition()
//       	.attr("r", 1 + image.size / 3);
      
//       d3.select(this).select("image")
//       	.attr("x", image.size / 6)
//       	.attr("y", image.size / 6)
//       	.attr("height", image.size * 2 / 3)
//         .attr("width", image.size * 2 / 3)
      
//       clipPath.attr("r", image.size / 3)
    }
    
    function dragged(d) {
      var newX = d3.event.x - image.size / 2,
          newY = d3.event.y - image.size / 2; 
      
      d3.select(this)
        .attr("transform", "translate(" + (d.position = [newX, newY]) + ")");
    }
    
    function dragended(d) {
      d3.select(this).lower();
      
    }
    
  </script>
</body>

https://d3js.org/d3.v4.min.js