public void Update(RgbColor rgb)
{
double r = (rgb.R / 255.0);
double g = (rgb.G / 255.0);
double b = (rgb.B / 255.0);
double min = Math.Min(Math.Min(r, g), b);
double max = Math.Max(Math.Max(r, g), b);
double delta = max - min;
L = (max + min) / 2;
if (delta == 0)
{
H = 0;
S = 0.0f;
}
else
{
S = (L <= 0.5) ? (delta / (max + min)) : (delta / (2 - max - min));
double hue;
if (r == max)
{
hue = ((g - b) / 6) / delta;
}
else if (g == max)
{
hue = (1.0f / 3) + ((b - r) / 6) / delta;
}
else
{
hue = (2.0f / 3) + ((r - g) / 6) / delta;
}
if (hue < 0)
{
hue += 1;
}
if (hue > 1)
{
hue -= 1;
}
H = (int)(hue * 360);
}
}
public void Update(RgbColor color)
{
double red = color.R;
double green = color.G;
double blue = color.B;
K = HandleCorner(Math.Min(1.0 - red / 255.0, Math.Min(1.0 - green / 255.0, 1.0 - blue / 255.0)));
C = HandleCorner((1.0 - (red / 255.0) - K) / (1.0 - K));
M = HandleCorner((1.0 - (green / 255.0) - K) / (1.0 - K));
Y = HandleCorner((1.0 - (blue / 255.0) - K) / (1.0 - K));
double HandleCorner(double value)
{
if (value < 0 || double.IsNaN(value))
{
value = 0;
}
return(value);
}
}
