D3 Examples - SVG Postcard

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <link href="https://fonts.googleapis.com/css?family=Bowlby+One" rel="stylesheet">
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    svg { width:100%; height: 100% }
    rect, circle { stroke-width: 10; }
    text { 
      font-family: 'Bowlby One', cursive; 
      fill: crimson; font-size: 130px;
      stroke-width: 3px; stroke: #222;
      text-shadow: 0px 1px 1px #ddd,
0px 2px 1px #d6d6d6,
0px 3px 1px #ccc,
0px 4px 1px #c5c5c5,
0px 5px 1px #c1c1c1,
0px 6px 1px #bbb,
0px 7px 1px #777,
0px 8px 3px rgba(100, 100, 100, 0.4),
0px 9px 5px rgba(100, 100, 100, 0.1),
0px 10px 7px rgba(100, 100, 100, 0.15),
0px 11px 9px rgba(100, 100, 100, 0.2),
0px 12px 11px rgba(100, 100, 100, 0.25),
0px 13px 15px rgba(100, 100, 100, 0.3);
    }
  </style>
</head>
​
<body>
  
  <script>
    // Feel free to change or delete any of the code you see!
    var svg = d3.select("body").append("svg"),
        defs = svg.append("defs")
            w = 800, h = 600,
        rects = [4],
            circles = [];
    var color = d3.scaleOrdinal(d3.schemeCategory10);
    
    var img_id = function(d){ return "img_" + d; }
    var img_url = function(d){ return "url(#img_" + d + ")"; }
    
    // create an svg element
    var imgPattern = defs.selectAll("pattern").data(d3.merge([rects, circles]))
        .enter()
    .append("pattern")
        .attr("id", img_id)
        .attr("width", 1)
        .attr("height", 1)
        .attr("patternUnits", "objectBoundingBox")
        .append("image")
            .attr("x", 0)
            .attr("y", 0)
            .attr("width", w)
        .attr("height", h)
        .attr("xlink:href", function(d) {
          return "https://lorempixel.com/" + w + "/" + h + "/city/" + d;
        })
    
    svg.selectAll("rect").data(rects)
      .enter().append("rect")
        .attr("x", 50)
        .attr("y", 50)
        .attr("height", h)
        .attr("width", w)
        .style("fill", img_url)
            .style("stroke", color)
    
    svg.selectAll("circle").data(circles)
      .enter().append("circle")
            .attr("cx", function(d, i){ return i * w * 1.5 + w; })
        .attr("cy", function(d, i){ return i % 2 ? 175 : 400; })
            .attr("r", w / 2)
        .style("fill", img_url)
            .style("stroke", color)
    
    function getPathData() {
        return 'M 0 400 L 100 400 Q 300 400 400 350 Q 500 300 700 300 L 800 300';
      }
    
    defs.append('path')
        .attr("d", getPathData())
        .attr("id", 'curvedTextPath');
    svg.append("text").attr("transform", "translate(50, -70)")
        .append("textPath")
                .attr("xlink:href", "#curvedTextPath")
        .text("SELECTED")
    
    svg.append("text").attr("transform", "translate(70, 50)")
        .append("textPath")
                .attr("xlink:href", "#curvedTextPath")
        .text("TEXT HERE")
    
  </script>
</body>
​
    