BREP_RANSAC

BREP_RANSAC is the kernel-free analytic recognition leaf prepared for the BREP repository. Its Rust library target is brep_ransac.

It recognizes plane, cylinder, cone, sphere, and torus carriers in neutral indexed triangle meshes. It supports generic recognition, known-type fitting, initial guesses, constrained fitting, and exact-candidate validation. Results contain neutral carrier parameters, support IDs, residuals, observability, confidence evidence, and diagnostics; they contain no BREP topology.

Build it from the repository root; tests require the private submodule:

cargo build --manifest-path BREP_RANSAC/Cargo.toml
./build.sh test-ransac

The main entry points are recognize_surfaces and recognize_surfaces_with_unresolved for mesh-wide recognition, plus reconstruct_surface / reconstruct_surface_from_vertices for a selected support. export_debug_obj writes recognition debug geometry. Synthetic test geometry lives with the private testing infrastructure.

The public package contains production sources, the manifest, README, and license. Runtime dependencies are serde and web-time. Tests, benchmarks, fixtures, and their development dependencies live in BREP-dev-data.