Individual skill
pointcloud-generator
Generate a colour-coded 3D point cloud (.xyz + .pcd) for bioinspired hierarchical ribbed membrane lattices — Cricket wing harp layer, Cicada tymbal corrugation layer, and multi-scale hierarchical lattice layer. Each structural element is analytically sampled (pure numpy, no LLM, no OpenSCAD) and assigned a distinct RGB colour. Produces ASCII XYZ, PCL v0.7 ASCII PCD, and a 4-panel PNG (isometric, top-XY, side-XZ, side-YZ). Chainable downstream of pointcloud-generator or upstream of fem-analysis.
skills/pointcloud-generator/SKILL.md
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# Point Cloud Generator
Generates a 3D point cloud for a **Hierarchical Ribbed Membrane Lattice** inspired by
*Gryllus bimaculatus* (cricket wing harp) and cicada tymbal geometry.
Three structurally distinct Z-layers are sampled analytically:
| Layer | Z offset | Structural feature | Colour |
|---|---|---|---|
| Cricket harp | 0 mm | Base membrane + diagonal file ridge + parallel harp veins | grey / red / orange |
| Cicada tymbal | +1.5 mm | Cosine-graded corrugation ribs (tall centre, zero at edges) | blue |
| Hierarchical lattice | +3.0 mm | Primary / secondary / tertiary rib scales (3 densities) | dark / mid / light green |
## Usage