Independent tessellation fork (MOI-style n-gons + feature spans) - #59
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jmossymoss wants to merge 10 commits into
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Independent tessellation fork (MOI-style n-gons + feature spans)#59jmossymoss wants to merge 10 commits into
jmossymoss wants to merge 10 commits into
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Product path is MOI-style angle/chord meshing with planar n-gons and per-feature spans. Legacy generate() stays for A/B and corpus goldens. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
Planar single-wire faces become n-gons, drums use a UV grid from local span requests, other faces use OCCT tessellation snapped to shared edge samples. CLI --independent selects this path without changing generate(). Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
Planar holes keep a keyhole n-gon, 4-sided patches use transfinite grids, and leftover curved faces ear-clip in unwrapped UV so every border vertex is a shared sample. Full-period and pole spheres get a UV lattice. This is the path that can weld watertight on MP9. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
unwrapUv always evaluated the period, which throws Standard_NoSuchObject on planes and ordinary BSplines. Catch leftover OCCT failures per face so one bad chart cannot abort the model. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
…rums. Simple 3–4 edge cylinders and spheres still get a revolution lattice. Boolean-split drums and torus fillets fall through to exact-sample transfinite or UV ear-clip so rims can weld. Skip Steiner interiors that were folding freeform fills. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
Booleaned cylinders often carry inner wires. If the bridged UV ring does not clip, keep the exact sample loop as a fan so rims still weld instead of falling through to OCCT. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
MSVC now defines _USE_MATH_DEFINES so M_PI is visible. ctest runs topology_signature through bash instead of CreateProcess on a .sh file. The Windows job compiles and gates on independent_mesh, CLI --independent smoke, and signature determinism; legacy generate() pipeline/corpus steps stay non-blocking. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
weft_app --independent (and the new bat) set the session flag, dispatch bake/export through meshIndependent(), and show it in Topology. Default weft_app still uses generate(). Recipes do not persist the flag. Co-authored-by: jmossymoss <jmossymoss@users.noreply.github.com>
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This branch is a documented fork of Weft’s mesher so we can test MOI / Plasticity-style tessellation without changing the border-contract generate() goldens.
Direction: import → analyze → weft::meshIndependent() → export. Planar n-gons from shared samples, UV lattices on simple drums/spheres, transfinite on 4-sided patches, UV ear-clip elsewhere. generate() stays the default CLI and corpus path.
Try it:
Windows:
independent.batlaunchesweft_app --independent(Topology checkbox on, bake/export through meshIndependent).dev.batwithout that flag still uses generate().--independentis not saved in recipes.T0 evidence (Release): ctest -R independent_mesh passes (box, cylinder, hole, fillet, sphere closed).
MP9 (3052 faces): completes in 8985 ms, 28859 verts, 33680 polys (9457 quads, 23435 tris, 788 n-gons). Unexplained opens 2413 (was ~19677 with OCCT snap). Three empty 2-edge planar slivers. Remaining cracks are high-edge-count plates/freeform.
Notes in docs/evidence/independent-mp9-2026-08-21.md.
Windows CI on this fork now requires compile, independent_mesh/bake_queue/topology_cache/geometry_pool, cylinder --independent CLI smoke, and signature determinism. Job-level continue-on-error is removed so that gate is real. Legacy generate() pipeline/corpus/release/signature-compare steps stay non-blocking.
Not in this PR: default app path is still generate() until T3, boolean grouping (T2), corpus still on generate() (T4).