public void SamplesJzCzhz()
{
// red
var c1 = new JzCzhzColor(0.6004, 0.2418, 39.58);
// white (D65)
var c2 = new JzCzhzColor(0.9886, 0.0003, 211.6);
// gray (D65)
var c3 = new JzCzhzColor(0.5446, 0.0003, 211.6);
// black
var c4 = new JzCzhzColor(0, 0, 0);
}
public void Convert_JzCzhz_to_Jzazbz(double jz,
double az,
double bz,
double jhz,
double cz,
double hz)
{
// arrange
var input = new JzCzhzColor(jhz, cz, hz);
var converter = new ConverterBuilder()
.FromJzCzhz()
.ToJzazbz()
.Build();
// act
var output = converter.Convert(input);
// assert
Assert.Equal(jz, output.Jz, DoubleComparer);
Assert.Equal(az, output.az, DoubleComparer);
Assert.Equal(bz, output.bz, DoubleComparer);
}
public void Convert_JzCzhz_to_XYZ(double x,
double y,
double z,
double jz,
double cz,
double hz)
{
// arrange
var input = new JzCzhzColor(jz, cz, hz);
var converter = new ConverterBuilder()
.FromJzCzhz(Illuminants.D65)
.ToXYZ(Illuminants.D65)
.Build();
// act
var output = converter.Convert(input);
// assert
Assert.Equal(x, output.X, DoubleComparer);
Assert.Equal(y, output.Y, DoubleComparer);
Assert.Equal(z, output.Z, DoubleComparer);
}
public void ComputingColorDifference()
{
// CIE Delta-E 1976
{
var differenceCalculator = new CIE76ColorDifference();
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 124.1169
Assert.Equal(124.11688039908189, difference);
}
// CMC l:c 1984
{
var differenceThreshold = CMCColorDifferenceThreshold.Acceptability; // or "Imperceptibility"
var differenceCalculator = new CMCColorDifference(differenceThreshold);
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 69.7388
Assert.Equal(69.7387994508022, difference);
}
// CIE Delta-E 1994
{
var application = CIE94ColorDifferenceApplication.GraphicArts; // or "Textiles"
var differenceCalculator = new CIE94ColorDifference(application);
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 60.7882
Assert.Equal(60.78823549707133, difference);
}
// CIE Delta-E 2000
{
var differenceCalculator = new CIEDE2000ColorDifference();
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 52.2320
Assert.Equal(52.23202852556586, difference);
}
// Delta Ez
{
var differenceCalculator = new JzCzhzDEzColorDifference();
var color1 = new JzCzhzColor(0.3, 0.4, 165);
var color2 = new JzCzhzColor(0.8, 0.6, 25);
var difference = differenceCalculator.ComputeDifference(in color1, in color2); // 1.0666
Assert.Equal(1.066630832433185, difference);
}
// Euclidean distance
{
// example for euclidean distance in the XYZ color space
var differenceCalculator = new EuclideanDistanceColorDifference <XYZColor>();
var color1 = new XYZColor(0.5, 0.5, 0.5);
var color2 = new XYZColor(0.2, 0.4, 0.6);
var difference = differenceCalculator.ComputeDifference(in color1, in color2); // 0.3317
Assert.Equal(0.33166247903553997, difference);
}
}
public void ToString_Simple()
{
var color = new JzCzhzColor(jz: 0.6, cz: 0.3, hz: 150);
Assert.Equal("JzCzhz [Jz=0.6, Cz=0.3, hz=150]", color.ToString());
}