/// <summary>
///
/// </summary>
/// <param name="c2"></param>
/// <param name="amount"></param>
/// <returns></returns>
public HSLColor Interpolate(HSLColor c2, float amount)
{
return new HSLColor(this.Hue + ((c2.Hue - this.Hue) * amount), this.Saturation + ((c2.Saturation - this.Saturation) * amount), this.Luminance + ((c2.Luminance - this.Luminance) * amount));
}
/// <summary>
///
/// </summary>
/// <param name="rr"></param>
/// <param name="gg"></param>
/// <param name="bb"></param>
public static HSLColor FromRGB(int rr, int gg, int bb)
{
double r = (rr / 255.0);
double g = (gg / 255.0);
double b = (bb / 255.0);
double min = Math.Min(Math.Min(r, g), b);
double max = Math.Max(Math.Max(r, g), b);
double delta = max - min;
HSLColor hsl = new HSLColor();
// get luminance value
hsl.Luminance = (float)(max + min) / 2;
if (delta == 0)
{
// gray color
hsl.Hue = 0;
hsl.Saturation = 0.0f;
}
else
{
// get saturation value
hsl.Saturation = (float)((hsl.Luminance < 0.5) ? (delta / (max + min)) : (delta / (2 - max - min)));
// get hue value
double del_r = (((max - r) / 6) + (delta / 2)) / delta;
double del_g = (((max - g) / 6) + (delta / 2)) / delta;
double del_b = (((max - b) / 6) + (delta / 2)) / delta;
double hue;
if (r == max)
hue = del_b - del_g;
else if (g == max)
hue = (1.0 / 3) + del_r - del_b;
else
hue = (2.0 / 3) + del_g - del_r;
// correct hue if needed
if (hue < 0)
hue += 1;
if (hue > 1)
hue -= 1;
hsl.Hue = (int)(hue * 360);
}
return hsl;
}
