public static Color FromHSB(HSBColor hsbColor)
{
float r = hsbColor.b;
float g = hsbColor.b;
float b = hsbColor.b;
if (hsbColor.s != 0)
{
float max = hsbColor.b;
float dif = hsbColor.b * hsbColor.s / 255f;
float min = hsbColor.b - dif;
float h = hsbColor.h * 360f / 255f;
if (h < 60f)
{
r = max;
g = h * dif / 60f + min;
b = min;
}
else if (h < 120f)
{
r = -(h - 120f) * dif / 60f + min;
g = max;
b = min;
}
else if (h < 180f)
{
r = min;
g = max;
b = (h - 120f) * dif / 60f + min;
}
else if (h < 240f)
{
r = min;
g = -(h - 240f) * dif / 60f + min;
b = max;
}
else if (h < 300f)
{
r = (h - 240f) * dif / 60f + min;
g = min;
b = max;
}
else if (h <= 360f)
{
r = max;
g = min;
b = -(h - 360f) * dif / 60 + min;
}
else
{
r = 0;
g = 0;
b = 0;
}
}
return Color.FromArgb(hsbColor.a,
(int)Math.Round(Math.Min(Math.Max(r, 0), 255)),
(int)Math.Round(Math.Min(Math.Max(g, 0), 255)),
(int)Math.Round(Math.Min(Math.Max(b, 0), 255)));
}
public static HSBColor FromColor(Color color)
{
HSBColor ret = new HSBColor(0f, 0f, 0f);
ret.a = color.A;
float r = color.R;
float g = color.G;
float b = color.B;
float max = Math.Max(r, Math.Max(g, b));
if (max <= 0)
return ret;
float min = Math.Min(r, Math.Min(g, b));
float dif = max - min;
if (max > min)
{
if (g == max)
{
ret.h = (b - r) / dif * 60f + 120f;
}
else if (b == max)
{
ret.h = (r - g) / dif * 60f + 240f;
}
else if (b > g)
{
ret.h = (g - b) / dif * 60f + 360f;
}
else
{
ret.h = (g - b) / dif * 60f;
}
if (ret.h < 0)
{
ret.h = ret.h + 360f;
}
}
else
{
ret.h = 0;
}
ret.h *= 255f / 360f;
ret.s = (dif / max) * 255f;
ret.b = max;
return ret;
}
public static Brush GetDraggedBrush(Brush brush)
{
// extract the color
Color clr = new Pen(brush).Color;
// generate the hsb color
HSBColor hsb = new HSBColor(clr);
// generate the dragged color
HSBColor draggedhsb = new HSBColor(hsb.A, hsb.H, hsb.S, hsb.B - 10.0f);
// check if we got a solid brush so we also return one
SolidBrush sb = brush as SolidBrush;
if (sb != null)
{ return new SolidBrush(draggedhsb.Color); }
// unhandled brush type
Debug.Check(false);
// if the brush type was not handled in release mode we return a solid brush by default
return new SolidBrush(draggedhsb.Color);
}
public static Color FromHSB(HSBColor hsbColor)
{
float r = hsbColor.b;
float g = hsbColor.b;
float b = hsbColor.b;
if (hsbColor.s != 0)
{
float max = hsbColor.b;
float dif = hsbColor.b * hsbColor.s / 255f;
float min = hsbColor.b - dif;
float h = hsbColor.h * 360f / 255f;
if (h < 60f)
{
r = max;
g = h * dif / 60f + min;
b = min;
}
else if (h < 120f)
{
r = -(h - 120f) * dif / 60f + min;
g = max;
b = min;
}
else if (h < 180f)
{
r = min;
g = max;
b = (h - 120f) * dif / 60f + min;
}
else if (h < 240f)
{
r = min;
g = -(h - 240f) * dif / 60f + min;
b = max;
}
else if (h < 300f)
{
r = (h - 240f) * dif / 60f + min;
g = min;
b = max;
}
else if (h <= 360f)
{
r = max;
g = min;
b = -(h - 360f) * dif / 60 + min;
}
else
{
r = 0;
g = 0;
b = 0;
}
}
return(Color.FromArgb(hsbColor.a,
(int)Math.Round(Math.Min(Math.Max(r, 0), 255)),
(int)Math.Round(Math.Min(Math.Max(g, 0), 255)),
(int)Math.Round(Math.Min(Math.Max(b, 0), 255))));
}
public static Color FromHSB(HSBColor hsbColor)
{
float red = hsbColor.brightness;
float green = hsbColor.brightness;
float blue = hsbColor.brightness;
if (hsbColor.saturation != 0)
{
float max = hsbColor.brightness;
float dif = hsbColor.brightness * hsbColor.saturation / 255f;
float min = hsbColor.brightness - dif;
float h = hsbColor.hue * 360f / 255f;
if (h < 60f)
{
red = max;
green = h * dif / 60f + min;
blue = min;
}
else if (h < 120f)
{
red = -(h - 120f) * dif / 60f + min;
green = max;
blue = min;
}
else if (h < 180f)
{
red = min;
green = max;
blue = (h - 120f) * dif / 60f + min;
}
else if (h < 240f)
{
red = min;
green = -(h - 240f) * dif / 60f + min;
blue = max;
}
else if (h < 300f)
{
red = (h - 240f) * dif / 60f + min;
green = min;
blue = max;
}
else if (h <= 360f)
{
red = max;
green = min;
blue = -(h - 360f) * dif / 60 + min;
}
else
{
red = 0;
green = 0;
blue = 0;
}
}
return(Color.FromArgb(hsbColor.alpha, (int)Math.Round(Math.Min(Math.Max(red, 0), 255)), (int)Math.Round(Math.Min(Math.Max(green, 0), 255)),
(int)Math.Round(Math.Min(Math.Max(blue, 0), 255))));
}