public static DoubleColor Double(
this CIEAXYZ xyz
)
{
double x = xyz.X;
double y = xyz.Y;
double z = xyz.Z;
double[] Clinear = new double[3];
Clinear[0] = x * 3.2406 - y * 1.5372 - z * 0.4986; // red
Clinear[1] = -x * 0.9689 + y * 1.8758 + z * 0.0415; // green
Clinear[2] = x * 0.0557 - y * 0.2040 + z * 1.0570; // blue
for (int i = 0; i < 3; i++)
{
Clinear[i] = (Clinear[i] <= 0.0031308) ? 12.92 * Clinear[i] : 1.055 * Math.Pow(Clinear[i], (1.0 / 2.4)) - 0.055;
}
return(new DoubleColor()
{
A = xyz.Alpha * 255.0,
R = Clinear[0] * 255.0,
G = Clinear[1] * 255.0,
B = Clinear[2] * 255.0
});
}
public static CIELab ToCIELab(
this CIEAXYZ axyz
)
{
CIELab lab = CIELab.Empty;
double x = axyz.X;
double y = axyz.Y;
double z = axyz.Z;
lab.Luminance = 116.0 * Fxyz(y / CIEAXYZ.D65.Y) - 16;
lab.RedGreenDimension = 500.0 * (Fxyz(x / CIEAXYZ.D65.X) - Fxyz(y / CIEAXYZ.D65.Y));
lab.YellowBlueDimension = 200.0 * (Fxyz(y / CIEAXYZ.D65.Y) - Fxyz(z / CIEAXYZ.D65.Z));
lab.Alpha = axyz.Alpha;
return(lab);
}
