public static RgbColour GetRgbFromHls(HslColour colour)
{
double l = colour.L;
double s = colour.S;
double h = colour.H;
double p2;
if (l <= 0.5)
{
p2 = l * (1 + s);
}
else
{
p2 = l + s - l * s;
}
double p1 = 2 * l - p2;
double doubleR, doubleG, doubleB;
if (s == 0)
{
doubleR = l;
doubleG = l;
doubleB = l;
}
else
{
doubleR = QqhToRgb(p1, p2, h + 120);
doubleG = QqhToRgb(p1, p2, h);
doubleB = QqhToRgb(p1, p2, h - 120);
}
// Convert RGB to the 0 to 255 range.
var r = (byte)(doubleR * 255.0);
var g = (byte)(doubleG * 255.0);
var b = (byte)(doubleB * 255.0);
return(new RgbColour(r, g, b));
}
public static HslColour AdjustLightness(HslColour c, double deltaL)
{
return(new HslColour(c.H, c.S, Math.Min(Math.Max(0.0d, c.L + deltaL), 1.0d)));
}
