static public Color HSV_to_RGB(HSV hsv)
{
double H = hsv.H;
double S = hsv.S;
double V = hsv.V;
while (H < 0)
{
H += 360;
}
;
while (H >= 360)
{
H -= 360;
}
;
double R, G, B;
if (V <= 0)
{
R = G = B = 0;
}
else if (S <= 0)
{
R = G = B = V;
}
else
{
double hf = H / 60.0;
int i = (int)Math.Floor(hf);
double f = hf - i;
double pv = V * (1 - S);
double qv = V * (1 - S * f);
double tv = V * (1 - S * (1 - f));
switch (i)
{
case 0:
R = V;
G = tv;
B = pv;
break;
case 1:
R = qv;
G = V;
B = pv;
break;
case 2:
R = pv;
G = V;
B = tv;
break;
case 3:
R = pv;
G = qv;
B = V;
break;
case 4:
R = tv;
G = pv;
B = V;
break;
case 5:
R = V;
G = pv;
B = qv;
break;
case 6:
R = V;
G = tv;
B = pv;
break;
case -1:
R = V;
G = pv;
B = qv;
break;
default:
R = G = B = V;
break;
}
}
int r = CIELab.FixOutOfRangeVaue((int)(R * 255.0));
int g = CIELab.FixOutOfRangeVaue((int)(G * 255.0));
int b = CIELab.FixOutOfRangeVaue((int)(B * 255.0));
return(Color.FromArgb(r, g, b));
}
public void ConvertColor()
{
ChangeNeeded = false;
switch (ConvertType)
{
case "RGB":
TargetRGB = Color.FromArgb(Int32.Parse(RGB_R.Text), Int32.Parse(RGB_G.Text), Int32.Parse(RGB_B.Text));
TargetXYZ = CIELab.RGB_to_XYZ(TargetRGB);
TargetCIELab = CIELab.RGB_to_CIELab(TargetRGB);
TargetHSV = HSV.RGB_to_HSV(TargetRGB);
SetHSV();
SetXYZ();
SetCIELab();
break;
case "HSV":
TargetHSV.H = Double.Parse(HSV_H.Text);
TargetHSV.S = Double.Parse(HSV_S.Text);
TargetHSV.V = Double.Parse(HSV_V.Text);
TargetRGB = HSV.HSV_to_RGB(TargetHSV);
TargetXYZ = CIELab.RGB_to_XYZ(TargetRGB);
TargetCIELab = CIELab.RGB_to_CIELab(TargetRGB);
SetRGB();
SetXYZ();
SetCIELab();
break;
case "XYZ":
TargetXYZ[0] = Double.Parse(XYZ_X.Text) * 100d;
TargetXYZ[1] = Double.Parse(XYZ_Y.Text) * 100d;
TargetXYZ[2] = Double.Parse(XYZ_Z.Text) * 100d;
TargetRGB = CIELab.XYZ_to_RGB(TargetXYZ);
TargetCIELab = CIELab.XYZ_to_CIELab(TargetXYZ);
TargetHSV = HSV.RGB_to_HSV(TargetRGB);
SetRGB();
SetHSV();
SetCIELab();
break;
case "Lab":
TargetCIELab.L = Double.Parse(Lab_L.Text);
TargetCIELab.a = Double.Parse(Lab_a.Text);
TargetCIELab.b = Double.Parse(Lab_b.Text);
TargetRGB = CIELab.CIELab_to_RGB(TargetCIELab);
TargetXYZ = CIELab.CIELab_to_XYZ(TargetCIELab);
TargetHSV = HSV.RGB_to_HSV(TargetRGB);
SetRGB();
SetHSV();
SetXYZ();
break;
}
targetColor.BackColor = TargetRGB;
ConvertType = "";
ChangeNeeded = true;
}
