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using System;
using Matrix = System.Collections.Generic.IReadOnlyList<System.Collections.Generic.IReadOnlyList<double>>;
namespace Colourful.Implementation.Conversion
{
/// <summary>
/// Converts from <see cref="LinearRGBColor" /> to <see cref="XYZColor" />.
/// </summary>
public sealed class LinearRGBToXYZConverter : LinearRGBAndXYZConverterBase, IColorConversion<LinearRGBColor, XYZColor>
{
private readonly Matrix _conversionMatrix;
/// <param name="sourceRGBWorkingSpace">Source RGB working space</param>
public LinearRGBToXYZConverter(IRGBWorkingSpace sourceRGBWorkingSpace)
{
SourceRGBWorkingSpace = sourceRGBWorkingSpace;
_conversionMatrix = GetRGBToXYZMatrix(SourceRGBWorkingSpace);
}
/// <summary>
/// Source RGB working space
/// </summary>
public IRGBWorkingSpace SourceRGBWorkingSpace { get; }
/// <summary>
/// Converts from <see cref="LinearRGBColor" /> to <see cref="XYZColor" />.
/// </summary>
public XYZColor Convert(in LinearRGBColor input)
{
if (!Equals(input.WorkingSpace, SourceRGBWorkingSpace))
throw new InvalidOperationException("Working space of input RGB color must be equal to converter source RGB working space.");
var xyz = _conversionMatrix.MultiplyBy(input.Vector);
var converted = new XYZColor(xyz);
return converted;
}
#region Overrides
/// <inheritdoc cref="object" />
public bool Equals(LinearRGBToXYZConverter other)
{
if (ReferenceEquals(this, other))
return true;
return Equals(SourceRGBWorkingSpace, other.SourceRGBWorkingSpace);
}
/// <inheritdoc cref="object" />
public override bool Equals(object obj) => obj is LinearRGBToXYZConverter other && Equals(other);
/// <inheritdoc cref="object" />
public override int GetHashCode() => SourceRGBWorkingSpace?.GetHashCode() ?? 0;
/// <inheritdoc cref="object" />
public static bool operator ==(LinearRGBToXYZConverter left, LinearRGBToXYZConverter right) => Equals(left, right);
/// <inheritdoc cref="object" />
public static bool operator !=(LinearRGBToXYZConverter left, LinearRGBToXYZConverter right) => !Equals(left, right);
#endregion
}
}
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