internal static void ToColorSpace(IRgb color, ILuv item)
{
var xyz = new Xyz();
var white = XyzConverter.WhiteReference;
xyz.Initialize(color);
var y = xyz.Y / XyzConverter.WhiteReference.Y;
item.L = y > XyzConverter.Epsilon ? 116.0 * XyzConverter.CubicRoot(y) - 16.0 : XyzConverter.Kappa * y;
var targetDenominator = GetDenominator(xyz);
var referenceDenominator = GetDenominator(white);
// ReSharper disable CompareOfFloatsByEqualityOperator
var xTarget = targetDenominator == 0
? 0
: ((4.0 * xyz.X / targetDenominator) - (4.0 * white.X / referenceDenominator));
var yTarget = targetDenominator == 0
? 0
: ((9.0 * xyz.Y / targetDenominator) - (9.0 * white.Y / referenceDenominator));
// ReSharper restore CompareOfFloatsByEqualityOperator
item.U = 13.0 * item.L * xTarget;
item.V = 13.0 * item.L * yTarget;
}
public override IRgb ToRgb()
{
return(XyzConverter.ToColor(this));
}
public override void Initialize(IRgb color)
{
XyzConverter.ToColorSpace(color, this);
}
public void Initialize(Rgb color)
{
XyzConverter.ToColorSpace(color, this);
}
