Function pickHue

randomColor.js:103–144

(options)

  };

  function pickHue(options) {
    if (colorRanges.length > 0) {
      var hueRange = getRealHueRange(options.hue);

      var hue = randomWithin(hueRange);

      //Each of colorRanges.length ranges has a length equal approximatelly one step
      var step = (hueRange[1] - hueRange[0]) / colorRanges.length;

      var j = parseInt((hue - hueRange[0]) / step);

      //Check if the range j is taken
      if (colorRanges[j] === true) {
        j = (j + 2) % colorRanges.length;
      } else {
        colorRanges[j] = true;
      }

      var min = (hueRange[0] + j * step) % 359,
        max = (hueRange[0] + (j + 1) * step) % 359;

      hueRange = [min, max];

      hue = randomWithin(hueRange);

      if (hue < 0) {
        hue = 360 + hue;
      }
      return hue;
    } else {
      var hueRange = getHueRange(options.hue);

      hue = randomWithin(hueRange);
      // Instead of storing red as two seperate ranges,
      // we group them, using negative numbers
      if (hue < 0) {
        hue = 360 + hue;
      }

      return hue;
    }
  }

  function pickSaturation(hue, options) {
    if (options.hue === "monochrome") {