This program generates a 3d model of a Hanzi/Kanji character using stroke data from Make me a Hanzi. It extrudes the character with the stroke order as the Z dimension.

It does this by splitting up each stroke into parts following the stroke order, and then skewing each part to form a slope.

In this blog post I go into detail about about the inner workings of this program. It uses SolidPython, OpenSCAD, Voronoi diagrams, PCA, and quite a lot of linear algebra.

Watch this YouTube video to see some examples.

The input of the program is a .yml file containing the settings to generate the model.

python src/main.py --out-scad main.scad --stl true --out-stl main.stl --settings examples/ai.yml --parts strokes

See src/base_settings.yml for all configuration options.

# Create a venv or similar, then:
pip3 install -r requirements.txt

Due to the unavailability of ARM-compatible wheels for Scipy (and other libraries), you can use Miniforge instead: Note: this doesn't always work properly, so your mileage may vary.

cat requirements.txt | xargs -n 1 pip install # this will fail for some packages
conda create -n 3d-hanzi-venv
conda activate 3d-hanzi-venv
while read requirement; do conda install --yes $requirement || pip install $requirement; done < requirements.txt

Scipy issue: scipy/scipy#13409

1. Generate strokes STLs and plate,pillars STLs
2. Verify design
3. Import to PrusaSlicer
4. Split to objects (top menu)
5. Export from PrusaSlicer as STL
6. Import in Cura
7. Use tree supports and raft to slice and print (preset available at res/cura-preset.curaprofile)

Please use black (pip install black) for formatting.