/// <summary>
/// Color conversion
/// The ColourfulConverter facade can convert from any of the supported color spaces to any other color space.
/// It always performs the chromatic adaptation if the input and output color space white points are different.
/// </summary>
private void ColorConversion()
{
RGBColor input = new RGBColor(1, 0, 0);
var converter = new ColourfulConverter {
WhitePoint = Illuminants.D50
};
XYZColor output = converter.ToXYZ(input);
} // end ColorConversion
public void Convert_Lab_to_XYZ(DataRow row)
{
var inputLab = row.GetLabColor();
var expectedXYZ = row.GetXYZColor();
var actualXYZ = _converter.ToXYZ(inputLab);
try
{
Assert.That(actualXYZ, Is.EqualTo(expectedXYZ)
.Using(new ColorVectorComparer(new DoubleDeltaComparer(0.000001))));
}
catch (AssertionException ex) { RethrowException(ex, row); }
}
public void Convert_xyY_to_XYZ(double xyzX, double xyzY, double xyzZ, double x, double y, double Y)
{
// arrange
var input = new xyYColor(x, y, Y);
var converter = new ColourfulConverter();
// act
XYZColor output = converter.ToXYZ(input);
// assert
Assert.That(output.X, Is.EqualTo(xyzX).Using(DoubleComparer));
Assert.That(output.Y, Is.EqualTo(xyzY).Using(DoubleComparer));
Assert.That(output.Z, Is.EqualTo(xyzZ).Using(DoubleComparer));
}
public void Convert_xyY_to_XYZ(double xyzX, double xyzY, double xyzZ, double x, double y, double Y)
{
// arrange
var input = new xyYColor(x, y, Y);
var converter = new ColourfulConverter();
// act
var output = converter.ToXYZ(input);
// assert
Assert.Equal(output.X, xyzX, DoubleComparer);
Assert.Equal(output.Y, xyzY, DoubleComparer);
Assert.Equal(output.Z, xyzZ, DoubleComparer);
}
public void Convert_XYZ_as_vector_to_XYZ(double x, double y, double z)
{
// arrange
IColorVector input = new XYZColor(x, y, z);
var converter = new ColourfulConverter();
// act
XYZColor output = converter.ToXYZ(input);
// assert
Assert.That(output.X, Is.EqualTo(x).Using(DoubleComparer));
Assert.That(output.Y, Is.EqualTo(y).Using(DoubleComparer));
Assert.That(output.Z, Is.EqualTo(z).Using(DoubleComparer));
}
public void Convert_XYZ_as_vector_to_XYZ(double x, double y, double z)
{
// arrange
IColorVector input = new XYZColor(x, y, z);
var converter = new ColourfulConverter();
// act
var output = converter.ToXYZ(input);
// assert
Assert.Equal(output.X, x, DoubleComparer);
Assert.Equal(output.Y, y, DoubleComparer);
Assert.Equal(output.Z, z, DoubleComparer);
}
public void Convert_sRGB_to_XYZ_D50(double r, double g, double b, double x, double y, double z)
{
// arrange
var input = new RGBColor(r, g, b);
var converter = new ColourfulConverter {
WhitePoint = Illuminants.D50
};
// act
var output = converter.ToXYZ(input);
// assert
Assert.Equal(output.X, x, DoubleComparer);
Assert.Equal(output.Y, y, DoubleComparer);
Assert.Equal(output.Z, z, DoubleComparer);
}
public void Convert_Lab_to_XYZ(double l, double a, double b, double x, double y, double z)
{
// arrange
var input = new LabColor(l, a, b, Illuminants.D65);
var converter = new ColourfulConverter {
WhitePoint = Illuminants.D65, TargetLabWhitePoint = Illuminants.D65
};
// act
var output = converter.ToXYZ(input);
// assert
Assert.Equal(output.X, x, DoubleComparerXYZPrecision);
Assert.Equal(output.Y, y, DoubleComparerXYZPrecision);
Assert.Equal(output.Z, z, DoubleComparerXYZPrecision);
}
public void Convert_Lab_to_XYZ(double l, double a, double b, double x, double y, double z)
{
// arrange
var input = new LabColor(l, a, b, Illuminants.D65);
var converter = new ColourfulConverter {
WhitePoint = Illuminants.D65, TargetLabWhitePoint = Illuminants.D65
};
// act
XYZColor output = converter.ToXYZ(input);
// assert
Assert.That(output.X, Is.EqualTo(x).Using(DoubleComparerXYZPrecision));
Assert.That(output.Y, Is.EqualTo(y).Using(DoubleComparerXYZPrecision));
Assert.That(output.Z, Is.EqualTo(z).Using(DoubleComparerXYZPrecision));
}
public void Convert_sRGB_to_XYZ_D65(double r, double g, double b, double x, double y, double z)
{
// arrange
var input = new RGBColor(r, g, b);
var converter = new ColourfulConverter {
WhitePoint = Illuminants.D65
};
// act
XYZColor output = converter.ToXYZ(input);
// assert
Assert.That(output.X, Is.EqualTo(x).Using(DoubleComparer));
Assert.That(output.Y, Is.EqualTo(y).Using(DoubleComparer));
Assert.That(output.Z, Is.EqualTo(z).Using(DoubleComparer));
}
