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effectcraft/docs
vangel76andClaude Opus 5.5 d7854b84a3 4-Color Gradient: weights 1 / (d² + Blend²), as After Effects
After Effects weighs each of the four points by its inverse squared
distance softened by Blend squared, 1 / (d^2 + Blend^2) in pixels: fitted to
AE 2026 renders of the default gradient at Blend 10, 100 and 300 and case
904 E16 at Blend 50 (power 2.00 at every Blend, softening 0 / 2367 / 9817 /
90127 = about Blend^2; mean error 0.27/255, max 0.9). EffectCraft used
1 / (d^2 / (100 Blend))^1.5, in which Blend cancels out: E16 was 34/255 off
on 99 % of the grid, now 0 grid points off, max 1/255, CPU and GPU.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-19 16:16:02 +02:00
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