/// <summary>
/// Transforms XYZ color to destination reference white.
/// </summary>
public XYZColor Transform(XYZColor sourceColor, XYZColor sourceWhitePoint, XYZColor targetWhitePoint)
{
if (sourceColor == null)
{
throw new ArgumentNullException("sourceColor");
}
if (sourceWhitePoint == null)
{
throw new ArgumentNullException("sourceWhitePoint");
}
if (targetWhitePoint == null)
{
throw new ArgumentNullException("targetWhitePoint");
}
if (sourceWhitePoint.Equals(targetWhitePoint))
{
return(sourceColor);
}
LMSColor sourceColorLMS = _conversionToLMS.Convert(sourceColor);
LMSColor sourceWhitePointLMS = _conversionToLMS.Convert(sourceWhitePoint);
LMSColor targetWhitePointLMS = _conversionToLMS.Convert(targetWhitePoint);
Matrix diagonalMatrix = MatrixFactory.CreateDiagonal(targetWhitePointLMS.L / sourceWhitePointLMS.L, targetWhitePointLMS.M / sourceWhitePointLMS.M, targetWhitePointLMS.S / sourceWhitePointLMS.S);
var targetColorLMS = new LMSColor(diagonalMatrix.MultiplyBy(sourceColorLMS.Vector));
XYZColor targetColor = _conversionToXYZ.Convert(targetColorLMS);
return(targetColor);
}
public void RasterMapperConstructorTest()
{
RasterMapper mapper = new RasterMapper(RasterMapMode.ValueIsArea, MatrixFactory.CreateIdentity(4));
Assert.AreEqual(RasterMapMode.ValueIsArea, mapper.Mode);
Assert.AreEqual(MatrixFactory.CreateIdentity(4), mapper.RasterTransformation);
Assert.AreEqual(MatrixFactory.CreateIdentity(4), mapper.GeometryTransformation);
Assert.AreEqual(1, mapper.ColumnSize);
Assert.AreEqual(1, mapper.RowSize);
Assert.AreEqual(new CoordinateVector(1, 0), mapper.ColumnVector);
Assert.AreEqual(new CoordinateVector(0, 1), mapper.RowVector);
Assert.AreEqual(new CoordinateVector(1, 1, 1), mapper.Scale);
Assert.AreEqual(Coordinate.Empty, mapper.Translation);
// exceptions
Assert.Throws <ArgumentNullException>(() => new RasterMapper(RasterMapMode.ValueIsArea, null));
Assert.Throws <ArgumentException>(() => new RasterMapper(RasterMapMode.ValueIsArea, new Matrix(1, 4)));
Assert.Throws <ArgumentException>(() => new RasterMapper(RasterMapMode.ValueIsArea, new Matrix(4, 1)));
Assert.Throws <ArgumentException>(() => new RasterMapper(RasterMapMode.ValueIsArea, new Matrix(4, 4, Double.NaN)));
Assert.Throws <ArgumentException>(() => new RasterMapper(RasterMapMode.ValueIsArea, new Matrix(4, 4)));
Assert.Throws <ArgumentException>(() =>
{
Matrix matrix = new Matrix(4, 4);
matrix[3, 0] = matrix[3, 1] = matrix[3, 2] = matrix[3, 3] = 1;
new RasterMapper(RasterMapMode.ValueIsArea, matrix);
});
Assert.Throws <NotSupportedException>(() => new RasterMapper(RasterMapMode.ValueIsArea, MatrixFactory.CreateDiagonal(0, 0, 0, 1)));
}
public void RasterMapperFromMapperTest()
{
// matrix from identity
RasterMapper sourceMapper = new RasterMapper(RasterMapMode.ValueIsArea, MatrixFactory.CreateIdentity(4));
RasterMapper mapper = RasterMapper.FromMapper(sourceMapper, MatrixFactory.CreateIdentity(4));
Assert.AreEqual(RasterMapMode.ValueIsArea, mapper.Mode);
Assert.AreEqual(MatrixFactory.CreateIdentity(4), mapper.GeometryTransformation);
// coordinate and vector from identity
mapper = RasterMapper.FromMapper(sourceMapper, new Coordinate(300, 1000, 0), new CoordinateVector(10, 3));
Assert.AreEqual(RasterMapMode.ValueIsArea, mapper.Mode);
Assert.AreEqual(new CoordinateVector(10, 0), mapper.ColumnVector);
Assert.AreEqual(new CoordinateVector(0, 3), mapper.RowVector);
Assert.AreEqual(new Coordinate(300, 1000), mapper.Translation);
// all values from identity
mapper = RasterMapper.FromMapper(sourceMapper, 300, 1000, 0, 10, 3, 0);
Assert.AreEqual(RasterMapMode.ValueIsArea, mapper.Mode);
Assert.AreEqual(new CoordinateVector(10, 0), mapper.ColumnVector);
Assert.AreEqual(new CoordinateVector(0, 3), mapper.RowVector);
Assert.AreEqual(new Coordinate(300, 1000), mapper.Translation);
// exceptions
Assert.Throws <ArgumentNullException>(() => RasterMapper.FromMapper(mapper, null));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, new Matrix(1, 4)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, new Matrix(4, 1)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, new Matrix(4, 4, Double.NaN)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, new Matrix(4, 4)));
Assert.Throws <ArgumentException>(() =>
{
Matrix matrix = new Matrix(4, 4);
matrix[3, 0] = matrix[3, 1] = matrix[3, 2] = matrix[3, 3] = 1;
RasterMapper.FromMapper(mapper, matrix);
});
Assert.Throws <NotSupportedException>(() => RasterMapper.FromMapper(mapper, MatrixFactory.CreateDiagonal(0, 0, 0, 1)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, Coordinate.Undefined, new CoordinateVector(0, 1, 0)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, Coordinate.Empty, new CoordinateVector(Double.NaN, Double.NaN, Double.NaN)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, Coordinate.Empty, new CoordinateVector(0, 1, 0)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, Coordinate.Empty, new CoordinateVector(1, 0, 0)));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, Double.NaN, 0, 0, 1, 0, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, Double.NaN, 0, 1, 0, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, 0, Double.NaN, 1, 0, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, 0, 0, 1, 0, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, 0, 0, 0, 1, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, 0, 0, Double.NaN, 1, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, 0, 0, 1, Double.NaN, 0));
Assert.Throws <ArgumentException>(() => RasterMapper.FromMapper(mapper, 0, 0, 0, 1, 1, Double.NaN));
}
