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moppeeerandClaude Opus 5.5
dc712baeca
LYH Studio episode 6 builds every gradient from C=0 M=100 Y=0 K=0 to C=100 M=0 Y=0 K=0. InDesign blends a gradient's process stops as inks: halfway is C 50 M 50, a light lilac. DesignCraft converted both ends to RGB and blended there, so the middle came out a darker violet (117, 88, 189 instead of 135, 119, 181), and every Episode 6 gradient looked different. A midpoint between CMYK stops also became an RGB colour, so the PDF shading turned RGB with a conversion warning. - color: `Color::lerp` blends CMYK with CMYK (or grey), and grey with grey, in ink space; anything with RGB still blends in RGB. - `Gradient::display_stops`: the expanded stops plus samples through each span that isn't RGB at both ends, for renderers that interpolate in RGB; the screen renderer uses it. - pdf: a midpoint's expanded stop now keeps the stops' space; the colour-space test expects no conversion for CMYK or grey midpoints. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>