WikiMap/wikiplot.js at master · jcarrus/WikiMap · GitHub

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var plot = function(root){

  var color = d3.scale.category20c();
  var format = d3.format(",d");
  var width = 2000;
	var height = 2000;
	var svg = d3.select('body').append('svg')
		.attr('width', width)
		.attr('height', height);
	var bubble = d3.layout.pack()
	    .sort(null)
	    .size([width, height])
	    .padding(1.5)
	    .value(function(d){ console.log(d); return d.children.length + 1; });

	var node = svg.selectAll(".node")
      	.data(bubble.nodes(root))
    	.enter().append("g")
     	.attr("class", "node")
      	.attr("transform", function(d) { console.log(d); return "translate(" + d.x + "," + d.y + ")"; });

  node.append("title")
      .text(function(d) { return d.title + ": " + format(d.value); });

	node.append("circle")
      	.attr("r", function(d) { return d.r; })
      	.style("fill", function(d) { return color(d.title); });

  node.append("text")
      .attr("dy", ".3em")
      .style("text-anchor", "middle")
      .text(function(d) { return d.title.substring(0, d.r / 5); });
};

var newplot = function(root){
  var diameter = 800;
  var margin = 0;
  var color = d3.scale.linear()
    .domain([-1, 5])
    .range(["hsl(152,80%,80%)", "hsl(228,30%,40%)"])
    .interpolate(d3.interpolateHcl);

  var pack = d3.layout.pack()
    .padding(2)
    .size([diameter - margin, diameter - margin])
    .value(function(d) { return d.children.length + 1; });

  var svg = d3.select("body").append("svg")
    .attr("width", diameter)
    .attr("height", diameter)
  .append("g")
    .attr("transform", "translate(" + diameter / 2 + "," + diameter / 2 + ")");

  var focus = root,
      nodes = pack.nodes(root),
      view;

  var circle = svg.selectAll("circle")
      .data(nodes)
    .enter().append("circle")
      .attr("class", function(d) { return d.parent ? d.children ? "node" : "node node--leaf" : "node node--root"; })
      .style("fill", function(d) { return d.children ? color(d.depth) : null; })
      .on("click", function(d) { if (focus !== d) zoom(d), d3.event.stopPropagation(); });

  var text = svg.selectAll("text")
      .data(nodes)
    .enter().append("text")
      .attr("class", "label")
      .style("fill-opacity", function(d) { return d.parent === root ? 1 : 0; })
      .style("display", function(d) { return d.parent === root ? null : "none"; })
      .text(function(d) { return d.title; });

  var node = svg.selectAll("circle,text");

  d3.select("body")
      .style("background", color(-1))
      .on("click", function() { zoom(root); });

  zoomTo([root.x, root.y, root.r * 2 + margin]);

  function zoom(d) {
    var focus0 = focus; focus = d;

    var transition = d3.transition()
        .duration(d3.event.altKey ? 7500 : 750)
        .tween("zoom", function(d) {
          var i = d3.interpolateZoom(view, [focus.x, focus.y, focus.r * 2 + margin]);
          return function(t) { zoomTo(i(t)); };
        });

    transition.selectAll("text")
      .filter(function(d) { return d.parent === focus || this.style.display === "inline"; })
        .style("fill-opacity", function(d) { return d.parent === focus ? 1 : 0; })
        .each("start", function(d) { if (d.parent === focus) this.style.display = "inline"; })
        .each("end", function(d) { if (d.parent !== focus) this.style.display = "none"; });
  }

  function zoomTo(v) {
    var k = diameter / v[2]; view = v;
    node.attr("transform", function(d) { return "translate(" + (d.x - v[0]) * k + "," + (d.y - v[1]) * k + ")"; });
    circle.attr("r", function(d) { return d.r * k; });
  }
};