public void CompandedRgbToLinearRgb(
float compandedR, float compandedG, float compandedB,
out float linearR, out float linearG, out float linearB)
{
switch (_compandingFunction)
{
case ColorCompandingFunction.Gamma:
linearR = ColorCompandingUtils.ApplyInverseGammaCompanding(compandedR, _gamma);
linearG = ColorCompandingUtils.ApplyInverseGammaCompanding(compandedG, _gamma);
linearB = ColorCompandingUtils.ApplyInverseGammaCompanding(compandedB, _gamma);
break;
case ColorCompandingFunction.SRGB:
linearR = ColorCompandingUtils.ApplyInverseSRGBCompanding(compandedR);
linearG = ColorCompandingUtils.ApplyInverseSRGBCompanding(compandedG);
linearB = ColorCompandingUtils.ApplyInverseSRGBCompanding(compandedB);
break;
case ColorCompandingFunction.LStar:
linearR = ColorCompandingUtils.ApplyInverseLStarCompanding(compandedR);
linearG = ColorCompandingUtils.ApplyInverseLStarCompanding(compandedG);
linearB = ColorCompandingUtils.ApplyInverseLStarCompanding(compandedB);
break;
default:
throw new InternalException("Illegal companding function");
}
}
public void ApplyInverseLStarCompanding_is_inverse_of_ApplyLStarCompanding()
{
for (float x = 0; x <= 1; x += Step)
{
var a = ColorCompandingUtils.ApplyLStarCompanding(x);
Assert.That(ColorCompandingUtils.ApplyInverseLStarCompanding(a), Is.EqualTo(x).Within(Epsilon));
}
}
public void ApplyInverseLStarCompanding_is_correct()
{
Assert.That(ColorCompandingUtils.ApplyInverseLStarCompanding(0), Is.EqualTo(0).Within(Epsilon));
Assert.That(ColorCompandingUtils.ApplyInverseLStarCompanding(1), Is.EqualTo(1).Within(Epsilon));
Assert.That(ColorCompandingUtils.ApplyInverseLStarCompanding(0.01f), Is.EqualTo(0.001107f).Within(Epsilon));
Assert.That(ColorCompandingUtils.ApplyInverseLStarCompanding(0.6f), Is.EqualTo(0.2812333f).Within(Epsilon));
}