// Generated by CoffeeScript 1.10.0
(function() {
  var INITIAL_SCALE, a, coordinates, data, enter_hexes, height, hexes, legend, r, rec, svg, vis, width;

  width = 960;

  height = 500;

  data = [];

  coordinates = [
    {
      x: '-a',
      y: 'r+r/2'
    }, {
      x: 'a',
      y: 'r+r/2'
    }, {
      x: '0',
      y: '0'
    }, {
      x: '-2a',
      y: '0'
    }, {
      x: '-a',
      y: '-r-r/2'
    }, {
      x: 'a',
      y: '-r-r/2'
    }, {
      x: '2a',
      y: '0'
    }
  ];

  INITIAL_SCALE = height / 2.4;


  /* SVG setup
   */

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

  vis = svg.append('g').attr({
    transform: "rotate(" + (-Math.acos(5 * Math.sqrt(7) / 14) / Math.PI * 180) + ") translate(150, 50)"
  });

  legend = svg.append('g').attr({
    transform: "translate(-300, 0)"
  });


  /* Recursive Procedure
   */

  rec = function(order, index) {
    var i, j, results;
    if (order === 0) {
      data.push(hept_tree_utils.get_hex_data(index));
      return;
    }
    results = [];
    for (i = j = 0; j <= 6; i = ++j) {
      results.push(rec(order - 1, index.concat([i])));
    }
    return results;
  };

  rec(1, []);


  /* 7 HEXAGONS COORDINATES
   */

  hexes = vis.selectAll('path').data(data);

  enter_hexes = hexes.enter().append('g');

  hexes.append('path').attr({
    "class": 'hex',
    d: function(d) {
      return hept_tree_utils.hex_generate_svg_path(d.scale * INITIAL_SCALE, 0);
    },
    transform: function(d) {
      return "translate(" + (d.translation.x * INITIAL_SCALE) + ", " + (d.translation.y * INITIAL_SCALE) + ") rotate(" + d.rotation + ")";
    }
  });

  hexes.append('circle').attr({
    r: 5,
    cx: function(d) {
      return "" + (d.translation.x * INITIAL_SCALE);
    },
    cy: function(d) {
      return "" + (d.translation.y * INITIAL_SCALE);
    }
  });

  hexes.append('text').text(function(d, i) {
    return "(" + coordinates[i].x + ", " + coordinates[i].y + ")";
  }).attr({
    transform: function(d) {
      return "translate(" + (d.translation.x * INITIAL_SCALE) + ", " + (d.translation.y * INITIAL_SCALE - 15) + ") rotate(" + d.rotation + ")";
    }
  });


  /* HEXAGON LEGEND
   */

  a = INITIAL_SCALE / 3;

  r = a / Math.sin(Math.PI / 3);

  legend.append('path').attr({
    "class": 'hex_legend',
    d: hept_tree_utils.hex_generate_svg_path(a, 0)
  });

  legend.append('path').attr({
    "class": 'line',
    d: "M0 0 L" + (-a) + " 0",
    stroke: 'steelblue'
  });

  legend.append('text').text('a').attr({
    transform: "translate(" + (-a / 2) + ", 15)",
    fill: 'steelblue'
  });

  legend.append('path').attr({
    "class": 'line',
    d: "M0 0 L0 " + (-r),
    stroke: 'firebrick'
  });

  legend.append('text').text('r').attr({
    transform: "translate(10, " + (-r / 2) + ")",
    fill: 'firebrick'
  });

  legend.append('path').attr({
    "class": 'line',
    d: "M" + a + " " + (r / 2) + " L" + a + " " + (-r / 2),
    stroke: 'firebrick'
  });

  legend.append('text').text('r').attr({
    transform: "translate(" + (a + 10) + ", 0)",
    fill: 'firebrick'
  });

  legend.append('circle').attr({
    r: 5,
    cx: 0,
    cy: 0
  });

}).call(this);