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Crease (Shift+E): picked edges stay sharp when the shape's smoothed (carried through each level and the mirror; saved); shown in magenta; tests

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-21 07:58:43 +02:00
commit ab554f277f
6 changed files with 108 additions and 6 deletions
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5
src/mesh.h
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@ -75,8 +75,9 @@ void bevelEdges(Mesh& m, const std::set<std::pair<int, int>>& edges, float width
// Edges where the faces meet sharper than `angle` degrees.
std::set<std::pair<int, int>> sharpEdges(const Mesh& m, float angle);
// Every face cut into four-sided pieces; `smooth` rounds it (Catmull–Clark) — edges sharper
// than `keepAngle` degrees stay sharp (180: none do).
void subdivide(Mesh& m, bool smooth, float keepAngle = 180.0f);
// than `keepAngle` degrees stay sharp (180: none do), and the `creases` (point pairs, the lower
// first) too: they're made the new edges along them, for the next time round.
void subdivide(Mesh& m, bool smooth, float keepAngle = 180.0f, std::set<std::pair<int, int>>* creases = nullptr);
// The ring of four-sided faces across an edge, cut round the middle `cuts` times. Returns the new
// points (empty if the edge has no four-sided face).
std::vector<int> loopCut(Mesh& m, std::pair<int, int> edge, int cuts = 1);