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alexanderalberandBrandon Thomas
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* Morph: a changed geometry morphs its outline (a circle turns into a star) Paired shapes that differ only in geometry (another preset, other adjust values, a custom path) and fill colour no longer cross-fade: one shape moves and its outline turns from the old geometry into the new one. - geom::morph aligns two outlines the way manim does: the same number of contours, the same number of cubic curves per contour pair, then every point moves in a straight line. Closed contours are turned and reversed so the points travel least (a triangle does not twist into a circle), extra points go to the longest curves, and a sub-path without partner grows out of (or shrinks into) a point, so a cube's faces appear and a donut's hole closes. Fill mode, outline and fill rule switch at the midpoint. - anim::morph_frame lists such shapes in MorphFrame::paths; the renderer draws them with the morphed geometry (PathMorph, a new render_blend argument next to TextMorph). Ported from the path morph in alexplain (MIT, same author). generated with Claude Code * Morph: differing looks of an outline cross-fade instead of switching When a sub-path pair differs in fill mode, outline or fill rule, the two looks no longer switch at the midpoint. A fill or outline only one side has fades out (or in), so a filled shape turning into a line loses its fill gradually. When both fill, the even-odd side lies opaque underneath and the other fades over it, so a donut's hole fills smoothly while it shrinks. generated with Claude Code --------- Co-authored-by: Brandon Thomas <echelon@gmail.com>