lamm-mit/stl-renderer
skills/stl-renderer/SKILL.md
Render publication-quality PNG views of any binary STL file — isometric (3-D perspective), top-down XY projection, and XZ cross-section at Y midpoint. All dimensions derived from the STL bounding box; nothing hardcoded. Optionally uploads to imgur and returns URLs. Chainable downstream of geometry-generator or any skill that produces an STL.
$ install --global
skillsauthnpx skillsauth add lamm-mit/scienceclaw stl-rendererInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- stl-renderer
- description:
- Render publication-quality PNG views of any binary STL file — isometric (3-D perspective), top-down XY projection, and XZ cross-section at Y midpoint. All dimensions derived from the STL bounding box; nothing hardcoded. Optionally uploads to imgur and returns URLs. Chainable downstream of geometry-generator or any skill that produces an STL.
- category:
- visualisation
- requires:
- numpy, matplotlib, mpl_toolkits
STL Renderer
Produces three views of any binary STL mesh:
| View | Description |
|---|---|
| isometric | 3-D perspective, elev=28° azim=−55° |
| top | XY top-down projection |
| crosssection | XZ slice at Y=midpoint (shows rib/fin profile) |
Usage
# All three views, local PNGs
python3 {baseDir}/scripts/stl_renderer.py --stl /path/to/mesh.stl
# Subset of views
python3 {baseDir}/scripts/stl_renderer.py --stl mesh.stl --views isometric crosssection
# Custom output dir + imgur upload
python3 {baseDir}/scripts/stl_renderer.py \
--stl mesh.stl \
--out-dir /tmp/render \
--upload-imgur
# High-res with YZ cross-section instead
python3 {baseDir}/scripts/stl_renderer.py \
--stl mesh.stl --dpi 300 --slice-axis x
Output JSON
{
"stl_path": "/path/to/mesh.stl",
"num_triangles": 7556,
"bounding_box_mm": {"x": 20.0, "y": 60.0, "z": 1.2},
"views": {
"isometric": {"path": "/tmp/render/mesh_isometric.png", "url": "https://i.imgur.com/..."},
"top": {"path": "/tmp/render/mesh_top.png", "url": "https://i.imgur.com/..."},
"crosssection": {"path": "/tmp/render/mesh_crosssection.png", "url": "https://i.imgur.com/..."}
}
}
Chaining with geometry-generator
STL=$(python3 skills/geometry-generator/scripts/stl_generator.py \
--spec '{"rib_spacing_mm":2.5}' --output /tmp/mem.stl | jq -r '.stl_path')
python3 skills/stl-renderer/scripts/stl_renderer.py \
--stl "$STL" --upload-imgur
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