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using System;
using Colourful.Implementation.Conversion;
namespace Colourful.Conversion
{
public partial class ColourfulConverter
{
private LinearRGBToXYZConverter _lastLinearRGBToXYZConverter;
private LinearRGBToXYZConverter GetLinearRGBToXYZConverter(IRGBWorkingSpace workingSpace)
{
if (_lastLinearRGBToXYZConverter != null &&
_lastLinearRGBToXYZConverter.SourceRGBWorkingSpace.Equals(workingSpace))
return _lastLinearRGBToXYZConverter;
return _lastLinearRGBToXYZConverter = new LinearRGBToXYZConverter(workingSpace);
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in RGBColor color)
{
// uncompanding
var rgbConverter = RGBToLinearRGBConverter.Default;
var linear = rgbConverter.Convert(color);
// conversion
var result = ToXYZ(linear);
return result;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in LinearRGBColor color)
{
// conversion
var converterXyz = GetLinearRGBToXYZConverter(color.WorkingSpace);
var unadapted = converterXyz.Convert(color);
// adaptation
var adapted = color.WorkingSpace.WhitePoint.Equals(WhitePoint) || !IsChromaticAdaptationPerformed
? unadapted
: Adapt(unadapted, color.WorkingSpace.WhitePoint);
return adapted;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in xyYColor color)
{
// conversion
var converter = xyYAndXYZConverter.Default;
var converted = converter.Convert(color);
return converted;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in LabColor color)
{
// conversion
var converter = LabToXYZConverter.Default;
var unadapted = converter.Convert(color);
// adaptation
var adapted = color.WhitePoint.Equals(WhitePoint) || !IsChromaticAdaptationPerformed
? unadapted
: Adapt(unadapted, color.WhitePoint);
return adapted;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in LChabColor color)
{
// conversion to Lab
var labConverter = LChabToLabConverter.Default;
var labColor = labConverter.Convert(color);
// conversion to XYZ (incl. adaptation)
var result = ToXYZ(labColor);
return result;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in HunterLabColor color)
{
// conversion
var converter = HunterLabToXYZConverter.Default;
var unadapted = converter.Convert(color);
// adaptation
var adapted = color.WhitePoint.Equals(WhitePoint) || !IsChromaticAdaptationPerformed
? unadapted
: Adapt(unadapted, color.WhitePoint);
return adapted;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in LuvColor color)
{
// conversion
var converter = LuvToXYZConverter.Default;
var unadapted = converter.Convert(color);
// adaptation
var adapted = color.WhitePoint.Equals(WhitePoint) || !IsChromaticAdaptationPerformed
? unadapted
: Adapt(unadapted, color.WhitePoint);
return adapted;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in LChuvColor color)
{
// conversion to Luv
var luvConverter = LChuvToLuvConverter.Default;
var labColor = luvConverter.Convert(color);
// conversion to XYZ (incl. adaptation)
var result = ToXYZ(labColor);
return result;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ(in LMSColor color)
{
// conversion
var converter = _cachedXYZAndLMSConverter;
var converted = converter.Convert(color);
return converted;
}
/// <summary>
/// Convert to CIE 1931 XYZ color
/// </summary>
public XYZColor ToXYZ<T>(T color) where T : IColorVector
{
switch (color)
{
case RGBColor typedColor:
return ToXYZ(in typedColor);
case LinearRGBColor typedColor:
return ToXYZ(in typedColor);
case XYZColor typedColor:
return typedColor;
case xyYColor typedColor:
return ToXYZ(in typedColor);
case HunterLabColor typedColor:
return ToXYZ(in typedColor);
case LabColor typedColor:
return ToXYZ(in typedColor);
case LChabColor typedColor:
return ToXYZ(in typedColor);
case LuvColor typedColor:
return ToXYZ(in typedColor);
case LChuvColor typedColor:
return ToXYZ(in typedColor);
case LMSColor typedColor:
return ToXYZ(in typedColor);
default:
throw new ArgumentException($"Cannot accept type '{typeof(T)}'.", nameof(color));
}
}
}
}
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