Individual skill
threejs
Three.js scene-graph parsing and export workflows: mesh baking, InstancedMesh expansion, part partitioning, per-link OBJ export, and URDF articulation.
tasks/threejs-to-obj/environment/skills/threejs/SKILL.md
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SKILL.mdcore · 3,268 bytesreferences/joint-type-heuristics.mddoc · 1,083 bytesreferences/link-export-rules.mddoc · 680 bytesreferences/urdf-minimal.mddoc · 677 bytesscripts/build_urdf_from_scene.mjsruns · 3,915 bytesscripts/export_instanced_obj.mjsruns · 1,758 bytesscripts/export_link_objs.mjsruns · 2,861 bytes
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# Three.js Scene Graph + Export
## Quick start
1) Load the module, call `createScene()`, then `updateMatrixWorld(true)`.
2) Treat **named `THREE.Group` nodes as parts/links**.
3) Assign each mesh to its **nearest named ancestor**.
4) Bake world transforms into geometry before export.
5) Export per-part OBJ (and optionally URDF) using deterministic ordering.
## Scene graph essentials
```
Object3D (root)