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| QString | mesh::validate (const StructuredPatch &p) |
| | Input checks. Empty string = valid.
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| QString | mesh::validate (const SweptPatch &p) |
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| QString | mesh::validate (const PatchMesh &pm) |
| | Rejects a patch with a folded / concave / degenerate quad (mesh::cellIsConvex). Empty string = valid.
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| PatchMesh | mesh::makeTransfinitePatch (const StructuredPatch &p, QString *err=nullptr) |
| | Transfinite interpolation on the four straight sides. The result has (n+1)×(m+1) vertices and n×m quads. On invalid input returns an empty PatchMesh and sets *err.
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| PatchMesh | mesh::makeTransfinitePatch (const QVector< QVector< QPointF > > &sides, int n, int m, const QString &tag, QString *err=nullptr) |
| | Transfinite (Coons) interpolation on four POLYLINE sides forming a loop: sides[0] runs c0→c1, sides[1] c1→c2, sides[2] c2→c3, sides[3] c3→c0 (each side's last point equals the next side's first). Sides are arc-length parametrised; n subdivisions along sides 0/2, m along 1/3. Boundary vertices are placed ON the polylines (so the ring the caller emits as PSLG segments is exactly this patch's boundary loop). Returns an empty PatchMesh + *err on invalid input (side with < 2 points, endpoints not matching, n or m < 1, folded quad).
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| PatchMesh | mesh::makeMappedPatch (const QPolygonF &ring, const QVector< int > &corners, double h, const QString &tag, QString *err=nullptr) |
| | Split a CCW ring at the four corners (ring vertex indices, ring order) into polyline sides, choose n = max(1, round(mean(len0, len2)/h)), m likewise from sides 1/3, and call the polyline overload.
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| PatchMesh | mesh::makeSweptPatch (const SweptPatch &p, QString *err=nullptr) |
| | Sweep the centreline: (stations)×(across+1) vertices, (stations-1)×across quads. On invalid input (or a folded offset) returns an empty PatchMesh and sets *err.
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- Author
- Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com
- Date
- 2026
- License\n GPL-3.0-or-later
Structured quad patches (TRI_QUAD_MESHING_PLAN §3.2, phase G3): transfinite four-sided patches and swept channel patches, in local indices. The polyline-side transfinite overload and makeMappedPatch serve the quad-region redesign (QUAD_MESHING_REDESIGN_PLAN_2026-09-06.md §4.2).
1.9.8