ImageMagick.ColorHSL.Initialize C# (CSharp) Method

    private void Initialize(double red, double green, double blue)
    {
      double quantumScale = 1.0 / Quantum.Max;
      double max = Math.Max(red, Math.Max(green, blue)) * quantumScale;
      double min = Math.Min(red, Math.Max(green, blue)) * quantumScale;
      double c = max - min;

      Lightness = (max + min) / 2.0;
      if (c <= 0.0)
      {
        Hue = 0.0;
        Saturation = 0.0;
      }
      else
      {
        if (max == (quantumScale * red))
        {
          Hue = ((quantumScale * green) - (quantumScale * blue)) / c;
          if ((quantumScale * green) < (quantumScale * blue))
            Hue += 6.0;
        }
        else if (max == (quantumScale * green))
          Hue = 2.0 + (((quantumScale * blue) - (quantumScale * red)) / c);
        else
          Hue = 4.0 + (((quantumScale * red) - (quantumScale * green)) / c);
        Hue *= 60.0 / 360.0;
        if (Lightness <= 0.5)
          Saturation = c / (2.0 * Lightness);
        else
          Saturation = c / (2.0 - (2.0 * Lightness));
      }
    }