OklabGamut

sRGB gamut clipping using Oklab.

Out-of-gamut colors are mapped using gamut intersection in a 2D plane, and hue is always preserved. Lightness and chroma are changed depending on the clip method; see ClipMethod for details.

LchGamut has the same goal, but this is a numerical solution created specifically for Oklab. As a result, this runs faster and has more clip methods (based on the lightness of the maximum chroma in the hue plane), but is otherwise the same.

Ported from the original C++ implementation:

Copyright (c) 2021 Björn Ottosson

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