# 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:
```bash
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`.