pyrucast

Bibliothèque d'éléments finis en Rust, inspirée de cast3m, exposée à Python — et utilisable telle quelle en Rust pur (pyo3 est une dépendance optionnelle : un build par défaut ne tire ni pyo3 ni libpython).

Documentation complète : le book mdbook dans book/ (architecture, modèle mémoire, maillage, champs, physiques…) — mdbook build book pour le HTML.
Référence API Rust : cargo doc --no-deps --lib --open.

Prérequis

Outil	Version	Installation
Rust	≥ 1.89 (`rust-version` du crate), édition 2024	`rustup`
Python	≥ 3.11	API Python uniquement — inutile en Rust pur
En-têtes Python	—	API Python uniquement — Linux : `python3-dev` (Debian/Ubuntu) ou `python3-devel` (Fedora/RHEL). Windows : inclus dans l'installateur officiel.

Usage en Rust pur (sans Python)

[dependencies]
pyrucast = { git = "…", default-features = false }   # pas de pyo3, pas de libpython

use pyrucast::atoms::ElementType;
let mesh = pyrucast::ops::mesh::triangulate_surface(&contour, ElementType::TRI3, Some(1.0))?;

cargo build / cargo test (sans feature) compilent le cœur en Rust pur — ni Python ni venv requis. L'API Python (#[pyclass]) vit derrière la feature python-api, activée automatiquement par maturin.

Compilation dans un venv (API Python)

Pour les builds avec l'API Python (maturin, ou cargo --features python-api), pyo3 localise l'interpréteur via VIRTUAL_ENV : activez toujours le venv avant cargo ou maturin, sinon la compilation échoue avec error: failed to run the Python interpreter at .... (Un cargo build pur n'a pas cette contrainte.)

Linux / macOS

python3 -m venv .venv
source .venv/bin/activate
pip install --upgrade pip maturin
maturin develop --release

Windows (PowerShell)

python -m venv .venv
.\.venv\Scripts\Activate.ps1
pip install --upgrade pip maturin
maturin develop --release

maturin develop compile le module et l'installe dans le venv. Vérification :

python -c "import pyrucast; c = pyrucast.Coords(2); print(c)"

Après toute modification du Rust, relancer simplement maturin develop --release.

Développement

pip install pytest ruff     # en plus de maturin, dans le venv
cargo build                 # cœur Rust pur (sans pyo3 ; pas besoin du venv)
cargo test                  # tests unitaires + intégration + doctests (Rust pur)
maturin develop && python -m pytest   # tests Python
cargo fmt && ruff format .  # formatage standard (Rust + Python)
bash script/check_all.sh    # enchaîne toutes les vérifications (formatage inclus)
bash script/check_doc.sh    # ou un seul bloc : format / rust / python / examples / doc

Le chapitre Compilation et tests du book détaille les features Cargo (viz, viz-interactive, stub-gen…), la génération du stub python/pyrucast/_pyrucast/__init__.pyi et le dépannage courant.

Licence

Distribué sous licence Mozilla Public License 2.0 (MPL-2.0).

C'est un copyleft au fichier : toute modification d'un fichier source de pyrucast doit être republiée sous MPL, mais on peut librement construire du code propriétaire au-dessus de la bibliothèque et l'y combiner. La MPL est par ailleurs compatible GPL/CeCILL (« Secondary Licenses », §3.3).

Development Status
- 3 - Alpha
Intended Audience
- Science/Research
Programming Language
- Rust
Topic
- Scientific/Engineering

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