void colorChanged()
{
var hsv = new ColorHSV((int)nudH.Value, (int)nudS.Value, (int)nudV.Value);
refreshColorPanel(hsv);
}
public static ColorRGB HsvToRgb(ColorHSV hsv)
{
if (hsv.H == 360)
{
hsv.H = 359; // 360为全黑，原因不明
}
float R = 0f, G = 0f, B = 0f;
if (hsv.S == 0)
{
return(new ColorRGB(hsv.V, hsv.V, hsv.V));
}
float S = hsv.S * 1.0f / 255, V = hsv.V * 1.0f / 255;
int H1 = (int)(hsv.H * 1.0f / 60), H = hsv.H;
float F = H * 1.0f / 60 - H1;
float P = V * (1.0f - S);
float Q = V * (1.0f - F * S);
float T = V * (1.0f - (1.0f - F) * S);
switch (H1)
{
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;
}
R = R * 255;
G = G * 255;
B = B * 255;
while (R > 255)
{
R -= 255;
}
while (R < 0)
{
R += 255;
}
while (G > 255)
{
G -= 255;
}
while (G < 0)
{
G += 255;
}
while (B > 255)
{
B -= 255;
}
while (B < 0)
{
B += 255;
}
return(new ColorRGB((int)R, (int)G, (int)B));
}
