# Changelog

## 0.1.0

- Add immutable parallel and conical projection of boundary curves onto surfaces.

- Add symmetric/tapered planar-face extrusion and straight extrusion up to an infinite plane.

- Add plane splits, filled sections, and extrusion of disconnected planar faces.
- Add draft, face sewing, signed 3D offsets, and open-surface thickening.
- Accept single-solid Boolean wrappers in draft and shell operations.

- Add ring torus construction and planar reflection for shapes.
- Correct planar-face normal metadata after a reflection.
- Add smooth lofts, open-path sweeps, and shelling with signed thickness.
- Validate shell face ownership, sweep profile placement, and inward-shell containment.

Initial release targeting Open CASCADE Technology 7.9.3.

- Direct C++17 NIF with immutable, garbage-collected shape resources.
- Curated primitives, curves, faces, booleans, transforms, finishing, extrusion, revolve, and ruled loft.
- Topology queries, measurements, analytic geometry metadata, and mesh generation.
- BREP, STEP, and binary STL exchange.
- Serialized dirty-scheduler execution and tagged native failures.
- Checksummed OCCT source installer and actionable build diagnostics.
- Keep OCCT range checks enabled and apply a minimal allocator-alignment correction in the pinned source installer. Verify the installed allocator before reporting success.
- Documented native preconditions, query return maps, selection ownership, and exchange behavior; API examples run as doctests.

- Added exact BREP hidden-line drawings with `drawing/5` and curve discretization with `polylines/3`; native builds now link OCCT TKHLR.