Refactor (again).
Let me explain how conversions to/from KS works.
It's all still a work in progress, we have not only one way of transforming to and from rgb, so I need to be flexible in this regard.
For this reason, the current code works this way:
- KisKSColorSpace has two template parameters:
+ int N, represents the number of wavelengths used
+ TYPE, the channel type
- Subclasses of KisKSColorSpace specify the type and the factory, that has to contain the conversion transformations to/from rgb and the conversions between various types of channels for KS.
- rgbToKS and KSToRgb color conversion transformations use the code in KisIlluminantProfile to do the convertion, integrating the mechanism in the great Pigment CMS (thank you Cyrille!).
- KisIlluminantProfile defines the functions needed to convert to/from KS: fromRgb() and toRgb(). These are just wrapper functions around rgbToReflectance and reflectanceToKS ( used in fromRgb ), and KSToReflectance and reflectanceToRgb (in toRgb ). Subclasses of
KisIlluminantProfile can redefine these functions so that the conversion is perfectly costumizable.
- Some works has still to be completed:
+ conversion cache
+ LC profile (faster than QP)
+ KSToKS color conversion transformation (to convert between half and float)