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Exact profiles for splines of any degree (a degree-4…7 Bézier segment kind, Seg2::Bezier, extruded as B-spline edges) and for free-form curves cut by crossings (exact sub-curves whose ends are moved to the true crossing, found by Newton; polylines only where that fails)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL
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bherbruckandClaude Opus 5.5 committed 2026-10-08 09:42:34 +00:00
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ROADMAP.md
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@@ -40,7 +40,7 @@ headline counts in-scope tabs only and lists the deferred ones separately.
| # | Milestone | Status | Hours left |
|---|---|---|---|
| M0 | Vertical slice | done | — |
| M1 | Sketch depth: done — projection/intersect/include as linked geometry (auto-project on faces, lost-reference warnings, break link), full SKETCH create/modify set (slots, polygons, tangent arcs/circles, ellipse, fit/control splines, conic, text, trim/extend/break, fillet/chamfer, offset, mirror, patterns, move/scale, blend curve, centerline), constraints incl. curvature and polygon with over-constraint refusal, driven/arc-length/linear-diameter dimensions, AutoConstrain, DXF/SVG insert, 3D sketch curves (Project To Surface, Intersection Curve, Isoparametric Curve, Spun Profile), exact free-form profiles (B-spline/NURBS edges). Left: sweeps along 3D sketch curves, degree 4+ splines as exact profiles | in progress | 4 |
| M1 | Sketch depth: done — projection/intersect/include as linked geometry (auto-project on faces, lost-reference warnings, break link), full SKETCH create/modify set (slots, polygons, tangent arcs/circles, ellipse, fit/control splines, conic, text, trim/extend/break, fillet/chamfer, offset, mirror, patterns, move/scale, blend curve, centerline), constraints incl. curvature and polygon with over-constraint refusal, driven/arc-length/linear-diameter dimensions, AutoConstrain, DXF/SVG insert, 3D sketch curves (Project To Surface, Intersection Curve, Isoparametric Curve, Spun Profile), exact free-form profiles (B-spline/NURBS edges, any spline degree, curves cut by crossings), sweeps and pipes along 3D sketch curves, canvases and decals, curvature combs | done | 4 |
| M2 | Robust modelling: coplanar booleans in the kernel, holes (placed on faces and on sketch points), threads (cosmetic, then modelled), patterns, mirror, shell, draft, split, construction geometry | in progress | 16 |
| M3 | General fillets and chamfers (curved edges, chains, vertex blends) | planned | 30 |
| M4 | Files: STEP import (done: all 29 Fusion STEP files — [docs/step-import.md](docs/step-import.md)), 3MF export and 3MF/STL import as mesh bodies (done), DXF sketches, OBJ import | in progress | 6 |
@@ -77,8 +77,8 @@ headline counts in-scope tabs only and lists the deferred ones separately.
and assembly components are flattened into bodies. Closed periodic faces (torus, B-spline
bands) are split in two for meshing; measure() uses a finer tolerance for small radii.
- No persistent naming (fillet edges are re-found by position; projected sketch geometry too).
- Control-point splines of degree 4 and up, and free-form curves split by crossings, enter
profiles as polylines; 3D sketch curves are reference geometry (not sweep paths yet).
- Free-form curves cut at a tangent touch (no clean crossing) enter that profile as polylines.
Sweeps along 3D sketch curves follow their polyline (smooth walls when the path is smooth).
- Shell and offset faces work on bodies of planes and cylinders (convex or not: filleted boxes,
bosses); draft on convex planar bodies and on walls (planes, cylinders → cones) between caps; loft is ruled.