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Show each LUT's fingerprint in the sidebar - #42
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…rough the cube The LUT list was names only. Each row now leads with a small strip of seven reference patches — a three-step gray ramp, skin, sky, foliage and red — sampled through that cube, so the tone curve and the hue shifts of a look are visible before it is selected. The "None" row shows the untouched patches, which is what every other row is a change from. `CubeLUT.sample(_:)` is a trilinear lookup on the CPU, the same interpolation CIColorCube does; `swatches` is computed once at init from the floats the table is built from. Three tests pin identity, red-fastest ordering, and interpolation between lattice points. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ViSYWttguWwFQm1PEksQ7K
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The LUT list was names only. Each row now leads with a strip of seven reference colors — a three-step gray ramp, skin, sky, foliage and red — sampled through that cube, so a look's tone curve and hue shifts are visible before selecting it. The None row shows the untouched patches, which every other row is a change from. That strip is the only new element in the row; the size goes into the tooltip.
CubeLUT.sample(_:): trilinear lookup on the CPU, matching CIColorCube, reading the table in place.CubeLUT.swatches: computed once at init, for file and in-memory LUTs alike.SwatchStrip: 56×18, rounded, hairline border, accessibility-hidden (the name carries the row).Test plan
swift test: 359 tests, 0 failures. New: identity leaves the patches alone, red-fastest ordering, interpolation between lattice points.🤖 Generated with Claude Code
https://claude.ai/code/session_01ViSYWttguWwFQm1PEksQ7K