forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
608cf8c74b
Curved 3-D solid faces used fixed per-LOD grid counts, so a partial arc (a sphere cap, a torus C-arc, a short cone wall) was sampled as finely as a whole rim, and the density knobs were scattered across four files. Every curved face (sphere / cone / torus / spline), feature edge and isoline now derives its segment count from a chord-height tolerance plus the arc's own radius and span — the same model the 2-D circle/arc/ellipse wires use (tess_util::arc_segments): a big rim samples finer than a small one, a short arc proportionally less than a full turn, and facet error is size-independent. All tolerances live in one block at the top of solid3d_tess: LodConfig is now a single chord fraction per LOD (arc_segs / circle_segs derive counts), plus EDGE_CHORD_FRAC, TRUCK_CHORD_FRAC and BOUNDARY_CHORD_FRAC. FACETRES scales the fraction. The cone height is a straight generator (no curvature) so it meshes in one division. Removes the scattered constants (circ_segs/grid_u/grid_v, CURVE_REL_TOL, BOUNDARY_SEGS, per-site M / EDGE_SEGS / ring_segs). Adaptive counts come out lower, not higher: the € solid drops 3056→1780 tris, a full sphere stays at 1024, five-solid total is 2989. Co-Authored-By: Claude Opus 4.8 <[email protected]>