// Generated by CoffeeScript 1.10.0
(function() {
  var HEADER, OFFSET, color, h, height, svg, treemap, vis, w, width, zoom, zoomable_layer;

  OFFSET = 4;

  HEADER = 8;

  svg = d3.select('svg');

  width = svg.node().getBoundingClientRect().width;

  height = svg.node().getBoundingClientRect().height;

  w = width - 40;

  h = height - 40;

  treemap = d3.layout.treemap().size([w, h]).value(function(node) {
    return node.size;
  }).padding([OFFSET + HEADER, OFFSET, OFFSET, OFFSET]).sort(function(a, b) {
    h = d3.ascending(a.height, b.height);
    if (h === 0) {
      return d3.ascending(a.size, b.size);
    }
    return h;
  });

  svg.attr({
    viewBox: (-width / 2) + " " + (-height / 2) + " " + width + " " + height
  });

  zoomable_layer = svg.append('g');

  zoom = d3.behavior.zoom().scaleExtent([-Infinity, Infinity]).on('zoom', function() {
    return zoomable_layer.attr({
      transform: "translate(" + (zoom.translate()) + ")scale(" + (zoom.scale()) + ")"
    });
  });

  svg.call(zoom);

  vis = zoomable_layer.append('g').attr({
    transform: "translate(" + (-w / 2) + "," + (-h / 2) + ")"
  });

  color = d3.scale.linear().domain([0, 5]).range([d3.hcl(320, 0, 20), d3.hcl(200, 70, 80)]).interpolate(d3.interpolateHcl);

  d3.json('http://wafi.iit.cnr.it/webvis/tmp/flare.json', function(tree) {
    var aggregate, cells, compute_height, compute_heights, data, labels;
    aggregate = function(node) {
      if (node.children != null) {
        node.children.forEach(aggregate);
        return node.size = d3.sum(node.children, function(d) {
          return d.size;
        });
      }
    };
    aggregate(tree);
    compute_height = function(node) {
      if (node.children != null) {
        node.children.forEach(compute_height);
        return node.height = 1 + d3.max(node.children, function(d) {
          return d.height;
        });
      } else {
        return node.height = 0;
      }
    };
    compute_height(tree);
    data = treemap.nodes(tree);
    compute_heights = function(node) {
      var bchildren, bmax, rchildren, rmax;
      if (node.children != null) {
        node.children.forEach(compute_heights);
        rmax = d3.max(node.children, function(c) {
          return c.x + c.dx;
        });
        rchildren = node.children.filter(function(d) {
          return (d.x + d.dx) >= rmax;
        });
        node.height_r = 1 + d3.max(rchildren, function(d) {
          return d.height_r;
        });
        bmax = d3.max(node.children, function(c) {
          return c.y + c.dy;
        });
        bchildren = node.children.filter(function(d) {
          return (d.y + d.dy) >= bmax;
        });
        return node.height_b = 1 + d3.max(bchildren, function(d) {
          return d.height_b;
        });
      } else {
        node.height_r = 0;
        return node.height_b = 0;
      }
    };
    compute_heights(tree);
    data.sort(function(a, b) {
      return d3.ascending(a.depth, b.depth);
    });
    cells = vis.selectAll('.cell').data(data);
    cells.enter().append('rect').attr({
      "class": 'cell',
      x: function(d) {
        return d.x;
      },
      y: function(d) {
        return d.y;
      },
      width: function(d) {
        return d.dx - 2 * OFFSET * d.height_r;
      },
      height: function(d) {
        return d.dy - 2 * OFFSET * d.height_b;
      },
      fill: function(d) {
        return color(d.depth);
      },
      stroke: function(d) {
        return color(d.depth + 0.5);
      }
    }).classed('leaf', function(d) {
      return (d.children == null) || d.children.length === 0;
    });
    labels = vis.selectAll('.label').data(data.filter(function(d) {
      return (d.children != null) && d.children.length > 0;
    }));
    return labels.enter().append('text').text(function(d) {
      return d.name;
    }).attr({
      "class": 'label',
      x: function(d) {
        return d.x;
      },
      y: function(d) {
        return d.y;
      },
      dx: 2,
      dy: '1em'
    });
  });

}).call(this);