internal static RGB HslToRgb(HSL hsl)
{
double r, g, b;
double lit = hsl.L / 100.0;
if (hsl.S == 0)
{
r = g = b = lit;
}
else
{
double sat = hsl.S / 100.0;
double d1 = hsl.H / 60.0;
int d2 = hsl.H / 60; // NOTE: Do not allow a hue of 360.
double d = d1 - d2;
switch (d2)
{
case 0:
r = lit;
g = lit * (1 - sat * (1 - d));
b = lit * (1 - sat);
break;
case 1:
r = lit * (1 - sat * d);
g = lit;
b = lit * (1 - sat);
break;
case 2:
r = lit * (1 - sat);
g = lit;
b = lit * (1 - sat * (1 - d));
break;
case 3:
r = lit * (1 - sat);
g = lit * (1 - sat * d);
b = lit;
break;
case 4:
r = lit * (1 - sat * (1 - d));
g = lit * (1 - sat);
b = lit;
break;
case 5:
r = lit;
g = lit * (1 - sat);
b = lit * (1 - sat * d);
break;
default:
r = g = b = 0;
break;
}
}
return(new RGB((int)Math.Round(r * 255, MidpointRounding.AwayFromZero),
(int)Math.Round(g * 255, MidpointRounding.AwayFromZero),
(int)Math.Round(b * 255, MidpointRounding.AwayFromZero)));
}
internal ColorEventArgs(Color col, RGB rgb = null, HSL hsl = null)
{
Col = col;
RGB = rgb;
HSL = hsl;
}
internal static Color HslToColor(HSL hsl)
{
return(RgbToCol(HslToRgb(hsl)));
}