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using Vector = System.Collections.Generic.IReadOnlyList<double>;
namespace Colourful.Implementation.Conversion
{
/// <summary>
/// Converts from <see cref="LinearRGBColor" /> to <see cref="RGBColor" />.
/// </summary>
public sealed class LinearRGBToRGBConverter : IColorConversion<LinearRGBColor, RGBColor>
{
/// <summary>
/// Default singleton instance of the converter.
/// </summary>
public static readonly LinearRGBToRGBConverter Default = new LinearRGBToRGBConverter();
/// <summary>
/// Converts from <see cref="LinearRGBColor" /> to <see cref="RGBColor" />.
/// </summary>
public RGBColor Convert(in LinearRGBColor input)
{
var result = CompandVector(input.Vector, input.WorkingSpace);
return result;
}
/// <summary>
/// Applying the working space companding function (<see cref="IRGBWorkingSpace.Companding" />) to uncompanded vector.
/// </summary>
private static RGBColor CompandVector(Vector uncompandedVector, IRGBWorkingSpace workingSpace)
{
var companding = workingSpace.Companding;
Vector compandedVector = new[]
{
companding.Companding(uncompandedVector[0]).CropRange(0, 1),
companding.Companding(uncompandedVector[1]).CropRange(0, 1),
companding.Companding(uncompandedVector[2]).CropRange(0, 1)
};
var result = new RGBColor(compandedVector, workingSpace);
return result;
}
#region Overrides
/// <inheritdoc cref="object" />
public bool Equals(LinearRGBToRGBConverter other) => other != null;
/// <inheritdoc cref="object" />
public override bool Equals(object obj) => obj is LinearRGBToRGBConverter;
/// <inheritdoc cref="object" />
public override int GetHashCode() => 1;
/// <inheritdoc cref="object" />
public static bool operator ==(LinearRGBToRGBConverter left, LinearRGBToRGBConverter right) => Equals(left, right);
/// <inheritdoc cref="object" />
public static bool operator !=(LinearRGBToRGBConverter left, LinearRGBToRGBConverter right) => !Equals(left, right);
#endregion
}
}
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