Geometer
Geometer is a generic C++ geometry library with an executable, Python package, and browser WASM interfaces. It provides STEP conversion, hidden-line projection (HLR), planar geometry, and mesh illustration. Board/domain policy and application rendering decisions belong to callers, not the geometry kernel.
Capabilities And Maturity
| Capability | Use and maturity |
|---|---|
| STEP bounds, GLB conversion, HLR, planar STEP synthesis | Supported geometry APIs. Model bounds has promoted generated contracts; HLR's generated contracts remain pilots. |
| Clipper2 Boolean/offset, planar batch solve and triangulation | Supported polygonized planar workflows; packed interfaces remain handwritten. |
| Fast vector HLR, colored STEP tessellation and mesh illustration | Browser APIs plus direct C++, native IPC, Rust and Python illustration since 2026.9.6; see the STEP-to-SVG guide. Demo applications are evaluation tools, not production renderers. |
| Analytic line/arc planar Boolean | Experimental, not production-ready. May fail closed on valid inputs. Not the dependable whole-board/layer copper-union path; prefer Clipper2 when polygonized output is suitable. |
| Persistent STEP-topology sessions | Experimental native-only subset. Structural declarations do not imply runtime availability. |
Contract promotion and solver production readiness are separate. See contract authority and the analytic decision.
Choose An Interface
| Need | Entry point |
|---|---|
| Keep one executable running; send bytes and receive structured results | Persistent executable IPC: Python, Node/TypeScript and Rust clients |
| Convenient Python file/model operations | Python package |
| File conversion or scripting | CLI commands |
| Geometry in a browser or Worker | WASM and TypeScript clients |
| Embed in native C++ | STEP and planar APIs |
| Manage byte buffers across a foreign-function boundary | C ABI and generic operations |
Not every operation is exposed through IPC. Check the executable's negotiated catalog and the generated operation reference.
Install And Try
Install the Python distribution (import name: geometer):
python -m pip install wn-geometer
geometer --version
Convert a STEP file with the executable-backed Python API:
from pathlib import Path
import geometer
Path("part.glb").write_bytes(geometer.model_to_glb(Path("part.step")))
Wheels bundle the native executable and install a geometer console command.
For persistent processes, use the IPC quick start.
Pin the package version in your application's dependency lock for repeatability.
Source checkouts provide native artifacts under dist/native/<platform>/,
browser WASM under dist/wasm/browser/, and the generated ESM package under
dist/wasm/npm/geometer/. The ESM artifact is not a claim of npm publication.
Documentation And Examples
Browse the generated HTML documentation or use the authored Markdown sources below.
- Interface specifications
- TypeSpec, contract authority and generated reference
- Examples and demo status
- Research and historical evidence
- Requirements and decisions
- Developer setup, builds, tests and releases
- Release notes
Start with the headless Python example or HLR Lab. Analytic and topology demos remain experimental; retention does not imply production support. See the demo audit for verification limits.
Contributing And License
See the developer guide for native/WASM builds and required release checks.
OCCT is generated dependency state under .deps/; documentation work does
not require rebuilding it. Releases follow
date-based versioning.
MIT. See LICENSE.
1 maintainer
Release files for wn-geometer 2026.9.12
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| wn_geometer-2026.9.12-py3-none-win_amd64.whl | Python 3 | none | Windows x86-64 | Details |
| wn_geometer-2026.9.12-py3-none-manylinux_2_35_x86_64.whl | Python 3 | none | Linux glibc 2.35+ x86-64 | Details |
| wn_geometer-2026.9.12-py3-none-manylinux_2_35_aarch64.whl | Python 3 | none | Linux glibc 2.35+ ARM64 | Details |
| wn_geometer-2026.9.12-py3-none-macosx_11_0_arm64.whl | Python 3 | none | macOS 11.0+ ARM64 | Details |
Total release size: 52.7 MB
Release files / wn_geometer-2026.9.12-py3-none-win_amd64.whl
| Download URL | wn_geometer-2026.9.12-py3-none-win_amd64.whl |
|---|---|
| Size | 8.6 MB |
| Tags | Python 3 Windows x86-64 |
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