distinct colors. not good though

gistfile1.txt

var divs=[0,1/2,1/4,3/4,1/8,5/8,3/8,7/8];
function getDiv(index){
  for(var i=divs.length;i<index;i++){
    var root = Math.ceil(Math.log2(i+1));
    var div=Math.pow(2, root);
    var lastDiv=Math.pow(2, root-1);
    var value=divs[i-lastDiv] + 1/div;
    divs[i]=value;
  }
  return divs[index-1];
}

function getDistinctColor(index,startHue,startSaturation,startLight,hueRange,saturationRange,lightRange){
  var div=getDiv(index);
  var hue = startHue + (hueRange[1]-hueRange[0])*div;
  if(hue>hueRange[1]){
    hue = hue - hueRange[1]+hueRange[0];
  }
  var saturation = startSaturation + (saturationRange[1]-saturationRange[0])*div;
  if(saturation>saturationRange[1]){
    saturation = saturation - saturationRange[1]+saturationRange[0];
  }
  var light = startLight + (lightRange[1]-lightRange[0])*div;
  if(light>lightRange[1]){
    light = light - lightRange[1]+lightRange[0];
  }

  // if( index % 2 === 0){
  //   saturation = saturationRange[0]+(saturationRange[1]-saturation);
  // }

  // if( index % 2 === 0){
  //   light = lightRange[0]+(lightRange[1]-light);
  // }
  return "hsl("+Math.round(hue)+", "+Math.round(saturation)+"%, "+Math.round(light)+"%)";
}

function getDistinctColors(size,startHue,startSaturation,startLight,hueRange,saturationRange,lightRange){
  var colors=[];
  for(var i=0;i<size;i++){
    colors[i]=getDistinctColor(i+1,startHue,startSaturation,startLight,hueRange,saturationRange,lightRange);
  }
  return colors;
}

function trimColorStr(colorStr){
  return colorStr.replace(/[ ,()%]/g,'');
}