rusty-hou

Calling compiled Rust function from Houdini python

NOTE:

• To prevent (python) environment clash, keep the development separate from hython i.e. do not attempt to source Houdini setup from within the activated development environment.
• This has only been tested on Linux and MacOS

Development environment setup (do this in an independent shell)

Use a version of python that matches the intended hython version

Unfortunately, hython is unable to create virtual environment even though technically, venv is part of standard python since version 3

<path-to-hython-compatible-python>/python3 -m venv venv
source venv/bin/activate
python -m pip install -r requirements.txt -r dev-requirements.txt 

Compile the Rust code and Python shim generation using maturin (this should already be setup via the commands above via the requirements.txt)

maturin build --release

You should find a wheel file

<top>/target/wheels/mesh-0.1.0-cp39-cp39-manylinux_2_24_x86_64.whl

Unzip the wheel file into some installation directory, you need this installation directory path later

cd <some-installation-directory>
unzip <top>/target/wheels/mesh-0.1.0-cp39-cp39-manylinux_2_24_x86_64.whl

You will find two directories created there, something like

mesh
mesh-0.1.0.dist-info

Use the compiled library (do this in an independent shell)

Make sure you are in a Houdini environment

Generate the test HIP via script, this different users with different Houdini version/platform to generate their own HIP rather than open a pre generated HIP which usually have issues with different versions of Houdini

env PYTHONPATH=<some-installation-directory> hython generate_hip.py