structural-fem-taskgen-cli 0.1.7

Structural FEM task generator and solver

Generate random or predefined beam / plane‑stress (CST) tasks, solve them with CalFEM and produce:

• PDF task cards (TikZ, Tectonic)
• PNG plots (internal forces, displacements, stresses)
• JSON results for auto‑grading

Powered by NumPy, CALFEM, gmsh & Tectonic; wrapped in a single Typer CLI and container image.

Requires

• Linux (x86-64). Tested on Ubuntu 22.04/24.04 & WSL2.
• Tectonic ≥ 0.15 for local PDF generation
  curl --proto '=https' --tlsv1.2 -fsSL https://drop-sh.fullyjustified.net \| sh

Install

Tool	Command
Stable wheel	pip install structural-fem-taskgen-cli
Test PyPI	pip install -i https://test.pypi.org/simple structural-fem-taskgen-cli
Docker image	docker pull lukpacho/taskgen:latest

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Quick Use ⚡️

CLI summary

taskgen --help
usage: taskgen [OPTIONS] COMMAND [ARGS]...

Options:
  --out-root, -o  Output directory (default: "./out" for docker, "~/.cache/taskgen" for local Python)
  --version, -V   Print version and exit
  --help          Show this message and exit

Commands:
  beam     Generate / solve 1‑D beam problems
  plane2d  Generate / solve 2‑D plane (CST) problems
  
Args: (see docs for beam/plan2d geometries)
  --beam-version (-v)     Available options: [1, 2, 3, 4, 5, 6, 7, 8, 999]
  --plane2d-version (-v)  Available options: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
  --num (-n)              Number of simulations per beam/plane2d version

Examples

Local Python / Docker container

# Create out/ directory
mkdir out
# Generate 10 random beams of beam-version 2 with task PDFs and solutions
taskgen --out-root ./out beam random -v 2 -n 10
# Generate 5 random beam tasks of beam-versions 2, 3, 4, 5 with task PDFs and solutions
takgen --out-root ./out beam random -v 2 -v 3 -v 4 -v 5 -n 5
# Do the same for plane2d through Docker (keeps host UID/GID)
docker run --rm \
  -e HOST_UID=$(id -u) -e HOST_GID=$(id -g) \
  -v "$PWD/out:/out" \
  lukpacho/taskgen \
  plane2d random -v 2 -v 3 -v 4 -v 5 -n 5

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Develop 🛠️

git clone https://github.com/lukpacho/structural-fem-taskgen.git
cd structural-fem-taskgen

# new env with deps
python -m venv .venv && source .venv/bin/activate
pip install -e .[dev]

# one‑shot lint | type‑check | tests
ruff check .
mypy src/ tests/
pytest -q

# auto‑format before commit
pre-commit install

Local smoke test

python -m build --wheel -o /tmp/dist
pipx run --spec /tmp/dist/*.whl taskgen --help
docker build -t taskgen-dev .
docker run --rm taskgen-dev --help

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Release 📦 GitHub Actions workflow

1. Lint, type‑check, test on 3.11 & 3.12.
2. Build wheel + sdist → pip check → taskgen --help
3. Upload to Test PyPI or PyPI (PYPI_TARGET (test/prod)).
4. Build & push multi‑arch Docker images to GHCR and DockerHub.
5. Run container smoke-test (docker run … --help).