public Color3(XyzColor color)
{
this.A = color.X;
this.B = color.Y;
this.C = color.Z;
this.Count = 1;
}
public static LabColor XyzToLab(XyzColor xyz)
{
double var_X = xyz.X / ref_X; //ref_X = 95.047 Observer= 2°, Illuminant= D65
double var_Y = xyz.Y / ref_Y; //ref_Y = 100.000
double var_Z = xyz.Z / ref_Z; //ref_Z = 108.883
if (var_X > 0.008856f)
{
var_X = Math.Pow(var_X, 1f / 3f);
}
else
{
var_X = (7.787f * var_X) + (16f / 116f);
}
if (var_Y > 0.008856f)
{
var_Y = Math.Pow(var_Y, 1f / 3f);
}
else
{
var_Y = (7.787f * var_Y) + (16f / 116f);
}
if (var_Z > 0.008856f)
{
var_Z = Math.Pow(var_Z, 1f / 3f);
}
else
{
var_Z = (7.787f * var_Z) + (16f / 116f);
}
return(new LabColor((116f * var_Y) - 16f,
500f * (var_X - var_Y),
200f * (var_Y - var_Z)));
}
public static Color XyzToRgb(XyzColor xyz)
{
double var_X = xyz.X / 100; //X from 0 to 95.047 (Observer = 2°, Illuminant = D65)
double var_Y = xyz.Y / 100f; //Y from 0 to 100.000
double var_Z = xyz.Z / 100f; //Z from 0 to 108.883
double var_R = var_X * 3.2406f + var_Y * -1.5372f + var_Z * -0.4986f;
double var_G = var_X * -0.9689f + var_Y * 1.8758f + var_Z * 0.0415f;
double var_B = var_X * 0.0557f + var_Y * -0.2040f + var_Z * 1.0570f;
if (var_R > 0.0031308f)
{
var_R = 1.055f * (Math.Pow(var_R, 1f / 2.4f)) - 0.055f;
}
else
{
var_R = 12.92f * var_R;
}
if (var_G > 0.0031308f)
{
var_G = 1.055f * (Math.Pow(var_G, 1f / 2.4f)) - 0.055f;
}
else
{
var_G = 12.92f * var_G;
}
if (var_B > 0.0031308f)
{
var_B = 1.055f * (Math.Pow(var_B, 1f / 2.4f)) - 0.055f;
}
else
{
var_B = 12.92f * var_B;
}
return(Color.FromArgb(
LabColorTransform.Range((int)Math.Round(var_R * 255f, 0f), 0, 0xff),
LabColorTransform.Range((int)Math.Round(var_G * 255f, 0f), 0, 0xff),
LabColorTransform.Range((int)Math.Round(var_B * 255f, 0f), 0, 0xff)));
}
public static Color XyzToRgb(XyzColor xyz)
{
return(LabColorTransform.XyzToRgb(xyz));
}
