opencad
The OpenCAD core: geometry kernel, constraint solver, feature tree, and the fluent modelling API — with no web framework and no network dependency.
Install:
pip install opencad # pydantic + numpy only
pip install "opencad[occt]" # add the OCCT B-rep backend
pip install "opencad[full]" # OCCT + scipy solver + networkx graph analysis
Use:
from opencad import Part, Sketch
profile = Sketch(name="Plate").rect(80, 30).circle(3, center=(8, 8), subtract=True)
plate = Part().extrude(profile, depth=4, name="Plate")
plate.fillet(edges="all", radius=1.0)
Every fluent call appends a node to a rebuildable feature DAG, which you can
serialize, edit, and replay. See the repository ARCHITECTURE.md for the
kernel/solver/tree design and TOPOLOGY.md for topological naming.
Packages
| Module | Responsibility |
|---|---|
opencad |
Fluent Part/Sketch API, RuntimeContext, CLI, design artifacts |
opencad.kernel |
B-rep operations, OCCT and analytic backends, KernelClient |
opencad.solver |
2-D constraint solving (NumPy/SciPy and SolveSpace backends) |
opencad.tree |
Feature DAG, incremental rebuild, branching, expressions |
Related distributions
opencad-agent— natural-language modelling on top of this packageopencad-backend— FastAPI HTTP service exposing all of the above
Tests
pytest
The suite runs against this package alone. A few integration tests exercise
repository files (examples/, docs/schemas/) and skip automatically when
the package is tested outside a monorepo checkout.
1 maintainer
Metadata
1 maintainer
Release files for opencad 0.2.4
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