Add color transform primitives, take 2. - #227
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PoignardAzur wants to merge 6 commits into
Open
PoignardAzur wants to merge 6 commits into
PoignardAzur wants to merge 6 commits into
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Introduce the `color_operations` crate as a small `no_std` layer for per-pixel color transforms in caller-selected working color spaces. Add `ComponentTransfer` and `TransferFunction` for per-channel identity, table, discrete, linear, and gamma operations. Add `ColorMatrix` for affine channel-mixing operations, including common constructors for opacity, brightness, contrast, invert, saturate, grayscale, hue rotation, sepia, and luminance-to-alpha. Add `ColorOperation` for storing mixed matrix and component-transfer pipelines. Add typed apply support for `AlphaColor`, `PremulColor`, and `DynamicColor`, plus raw straight and premultiplied component helpers. `DynamicColor` operations preserve the runtime color-space tag and missing-component flags while discarding named-color state. Operations intentionally do not clip, clamp, gamut-map, pack, quantize, or perform color-space conversion; those remain caller/rendering-boundary responsibilities.
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Add color-transformation primitives, specifically
ColorMatrixandComponentTransfer.Add functions for creating these types (valid for sRGB only) matching the shorthands in Filter Effects Module Level 1 § 13.
Builds on top of @waywardmonkeys's #221.
Implements the solution proposed in #221 (comment).