// Generated by CoffeeScript 1.10.0
(function() {
  var arc, color, color_opacity, get_color, height, lod, partition, radius, set_size, svg, width, zoom, zoomable_layer;

  width = 960;

  height = 500;

  radius = Math.min(width, height) * 2;

  color_opacity = 0.7;

  svg = d3.select('svg').attr({
    width: width,
    height: height,
    viewBox: (-width / 2) + " " + (-height / 2) + " " + width + " " + height
  });

  zoomable_layer = svg.append('g');

  zoom = d3.behavior.zoom().scaleExtent([0.5, 64]).on('zoom', function() {
    zoomable_layer.attr({
      transform: "translate(" + (zoom.translate()) + ")scale(" + (zoom.scale()) + ")"
    });
    zoomable_layer.selectAll('.semantic_zoom').attr({
      transform: "scale(" + (1 / zoom.scale()) + ")"
    });
    return lod(zoom.scale());
  });

  svg.call(zoom);

  lod = function(z) {
    return zoomable_layer.selectAll('.semantic_zoom').attr({
      display: function(d) {
        if (20 / z < d.dx * Math.pow(d.dy, 0.4)) {
          return 'inline';
        } else {
          return 'none';
        }
      }
    });
  };

  partition = d3.layout.partition().size([2 * Math.PI, radius * radius]).sort(null).value(function(d) {
    return d.size;
  });

  arc = d3.svg.arc().startAngle(function(d) {
    return d.x;
  }).endAngle(function(d) {
    return d.x + d.dx;
  }).innerRadius(function(d) {
    return Math.pow(d.y, 0.4);
  }).outerRadius(function(d) {
    return Math.pow(d.y + d.dy, 0.4);
  });

  color = d3.scale.category20();

  get_color = function(node) {
    if (node['tree_root'] != null) {
      return color(node.name);
    } else {
      return get_color(node.parent);
    }
  };

  set_size = function(d) {
    var sum;
    if (d.children == null) {
      d.size = 1;
      return 1;
    } else {
      sum = 1;
      d.children.forEach(function(c) {
        return sum += set_size(c);
      });
      d.size = sum;
      return sum;
    }
    return d;
  };

  d3.json('tree.json', function(error, root) {
    var enter_labels, labels, nodes, sectors;
    console.log(root);
    tree_utils.canonical_sort(root);
    set_size(root);
    nodes = partition.nodes(root);
    sectors = zoomable_layer.selectAll('.sector').data(nodes);
    sectors.enter().append('path').attr({
      "class": 'sector',
      d: arc,
      fill: function(d) {
        if (d.name === "SemanticArts") {
          return '#cfcfcf';
        } else {
          return get_color(d);
        }
      }
    });
    sectors.exit().remove();
    labels = zoomable_layer.selectAll('.label').data(nodes);
    enter_labels = labels.enter().append('g').attr({
      "class": 'label',
      transform: function(d) {
        if (d.name === 'SemanticArts') {
          return "translate(0,0)";
        } else {
          return "translate(" + ((Math.pow(d.y + d.dy / 2, 0.4)) * Math.cos(d.x + d.dx / 2 - Math.PI / 2)) + ", " + ((Math.pow(d.y + d.dy / 2, 0.4)) * Math.sin(d.x + d.dx / 2 - Math.PI / 2)) + ")";
        }
      }
    });
    enter_labels.append('text').attr({
      "class": 'halo semantic_zoom',
      dy: '0.35em'
    }).text(function(d) {
      return d.name.replace('http://ontologies.semanticarts.com/', '');
    });
    enter_labels.append('text').attr({
      "class": 'semantic_zoom',
      dy: '0.35em'
    }).text(function(d) {
      return d.name.replace('http://ontologies.semanticarts.com/', '');
    });
    return lod(1);
  });

}).call(this);