private static Color ToColor(ColorHsv hsv)
{
// HSV contains values scaled as in the color wheel:
// that is, all from 0 to 255.
// For this code to work, HSV.Hue needs
// to be scaled from 0 to 360 (it's the angle of the selected
// point within the circle). HSV.Saturation and HSV.Value must be
// scaled to be between 0 and 1.
float r = 0, g = 0, b = 0;
// Scale Hue to be between 0 and 360. Saturation
// and Value scale to be between 0 and 1.
float h = (hsv.H / 255.0f * 360.0f) % 360;
float s = hsv.S / 255.0f;
float v = hsv.V / 255.0f;
if (s == 0)
{
// If s is 0, all colors are the same.
// This is some flavor of gray.
r = v;
g = v;
b = v;
}
else
{
// The color wheel consists of 6 sectors.
// Figure out which sector you're in.
float sectorPos = h / 60.0f;
int sectorNumber = (int) Math.Floor(sectorPos);
// Get the fractional part of the sector.
// That is, how many degrees into the sector
// are you?
float fractionalSector = sectorPos - sectorNumber;
// Calculate values for the three axes
// of the color.
float p = v * (1 - s);
float q = v * (1 - (s * fractionalSector));
float t = v * (1 - (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 = v;
g = t;
b = p;
break;
case 1:
r = q;
g = v;
b = p;
break;
case 2:
r = p;
g = v;
b = t;
break;
case 3:
r = p;
g = q;
b = v;
break;
case 4:
r = t;
g = p;
b = v;
break;
case 5:
r = v;
g = p;
b = q;
break;
}
}
return Color.FromRgb((byte)(r * 255), (byte)(g * 255), (byte)(b * 255));
}
private static Color ToColor(ColorHsv hsv)
{
// HSV contains values scaled as in the color wheel:
// that is, all from 0 to 255.
// For this code to work, HSV.Hue needs
// to be scaled from 0 to 360 (it's the angle of the selected
// point within the circle). HSV.Saturation and HSV.Value must be
// scaled to be between 0 and 1.
float r = 0, g = 0, b = 0;
// Scale Hue to be between 0 and 360. Saturation
// and Value scale to be between 0 and 1.
float h = (hsv.H / 255.0f * 360.0f) % 360;
float s = hsv.S / 255.0f;
float v = hsv.V / 255.0f;
if (s == 0)
{
// If s is 0, all colors are the same.
// This is some flavor of gray.
r = v;
g = v;
b = v;
}
else
{
// The color wheel consists of 6 sectors.
// Figure out which sector you're in.
float sectorPos = h / 60.0f;
int sectorNumber = (int)Math.Floor(sectorPos);
// Get the fractional part of the sector.
// That is, how many degrees into the sector
// are you?
float fractionalSector = sectorPos - sectorNumber;
// Calculate values for the three axes
// of the color.
float p = v * (1 - s);
float q = v * (1 - (s * fractionalSector));
float t = v * (1 - (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 = v;
g = t;
b = p;
break;
case 1:
r = q;
g = v;
b = p;
break;
case 2:
r = p;
g = v;
b = t;
break;
case 3:
r = p;
g = q;
b = v;
break;
case 4:
r = t;
g = p;
b = v;
break;
case 5:
r = v;
g = p;
b = q;
break;
}
}
return(Color.FromRgb((byte)(r * 255), (byte)(g * 255), (byte)(b * 255)));
}
