public Color (ColorHSB hsb)
: this()
{
float r = 0;
float g = 0;
float b = 0;
if (hsb.S == 0) {
r = g = b = 0;
} else {
// the color wheel consists of 6 sectors. Figure out which sector
// you're in.
float sectorPos = hsb.H / 60.0f;
int sectorNumber = (int)(Math.Floor (sectorPos));
// get the fractional part of the sector
float fractionalSector = sectorPos - sectorNumber;
// calculate values for the three axes of the color.
float p = hsb.B * (1.0f - hsb.S);
float q = hsb.B * (1.0f - (hsb.S * fractionalSector));
float t = hsb.B * (1.0f - (hsb.S * (1 - fractionalSector)));
// assign the fractional colors to r, g, and b based on the sector
// the angle is in.
switch (sectorNumber) {
case 0:
r = hsb.B;
g = t;
b = p;
break;
case 1:
r = q;
g = hsb.B;
b = p;
break;
case 2:
r = p;
g = hsb.B;
b = t;
break;
case 3:
r = p;
g = q;
b = hsb.B;
break;
case 4:
r = t;
g = p;
b = hsb.B;
break;
case 5:
r = hsb.B;
g = p;
b = q;
break;
}
}
this.R = r;
this.G = g;
this.B = b;
this.A = hsb.A;
}
public Color(ColorHSB hsb)
: this(hsb.ToColor())
{
}
public static float Distance (ColorHSB value1, ColorHSB value2)
{
return (float)Math.Sqrt (Math.Pow ((value1.H - value2.H) / 360f, 2) + Math.Pow (value1.S - value2.S, 2) + Math.Pow (value1.B - value2.B, 2));
}
