// Generated by CoffeeScript 1.10.0
(function() {
  var height, hquad, indices, quad_layout, quads, rects, scale, svg, vis, width;

  scale = 480;

  svg = d3.select('svg');

  vis = svg.append('g').attr({
    transform: "translate(" + (scale / 2) + ", 10)"
  });

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

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

  quad_layout = function(mapping, size) {
    return function(digits) {
      var m;
      m = mapping(digits);
      return {
        x: m.j / Math.pow(2, m.n) * size,
        y: m.i / Math.pow(2, m.n) * size,
        dx: 1 / Math.pow(2, m.n) * size,
        dy: 1 / Math.pow(2, m.n) * size,
        digits: m.digits
      };
    };
  };

  hquad = function(digits) {
    var d, i, i_temp, j, k, l, n;
    n = digits.length;
    l = 1;
    i = 0;
    j = 0;
    for (k = digits.length - 1; k >= 0; k += -1) {
      d = digits[k];
      switch (d) {
        case '0':
          i_temp = i;
          i = j;
          j = i_temp;
          break;
        case '1':
          i += l;
          break;
        case '2':
          i += l;
          j += l;
          break;
        case '3':
          i_temp = i;
          i = l - j - 1;
          j = 2 * l - i_temp - 1;
      }
      l = 2 * l;
    }
    return {
      j: j,
      i: i,
      n: n,
      digits: digits
    };
  };


  /*  Visualization
   */

  indices = ["0", "10", "11", "12", "13", "200", "201", "202", "203", "210", "211", "212", "213", "220", "221", "222", "223", "230", "231", "232", "233", "230", "231", "232", "233", "3000", "3001", "3002", "301", "302", "303", "31", "32"];

  quads = indices.map(quad_layout(hquad, 480));

  rects = vis.selectAll('rect').data(quads);

  rects.enter().append('g');

  rects.append('rect').attr({
    x: function(d) {
      return d.x;
    },
    y: function(d) {
      return d.y;
    },
    width: function(d) {
      return d.dx;
    },
    height: function(d) {
      return d.dy;
    }
  }).append('title').text(function(d) {
    return "x: " + d.x + "\ny: " + d.y + "\nw/h: " + d.dx;
  });

  rects.append('text').attr({
    x: function(d) {
      return d.x + (d.dx / 2);
    },
    y: function(d) {
      return d.y + (d.dy / 2);
    },
    'text-anchor': 'middle',
    dy: '0.35em',
    'font-size': function(d) {
      return d.dx / 5;
    }
  }).text(function(d) {
    return d.digits;
  });

}).call(this);