In this module

• texture
• is_watertight_topology
• rasterize_vnf_texture
• vnf_tile_to_solid
• is_heightfield_texture
• is_vnf_texture

Textures

Port of BOSL2’s texture() engine (from skin.scad): the named-texture table that textured_tile() builds from. texture() resolves a texture name to its data — either a height-field (a 2-D array of heights in [0, 1]) or a VNF tile (verts, faces) describing one unit cell of the surface.

All of BOSL2’s textures are ported (9 height-field + 12 VNF). Height-field textures: ribs, trunc_ribs, wave_ribs, diamonds, pyramids, trunc_pyramids, hills, bricks, rough. VNF-tile textures: diamonds_vnf, pyramids_vnf, trunc_pyramids_vnf, cubes, trunc_ribs_vnf, bricks_vnf, checkers, trunc_diamonds, tri_grid, and the $fn-parametric cones, dots and hex_grid (pass fn for their resolution). A few VNF tiles that can’t be tiled watertight directly (bricks_vnf, checkers, trunc_diamonds) fall back to a sampled height-field, which slightly flattens their vertical faces. .. autofunction:: bosl2.texture.texture

bosl2.texture.vnf_tile_to_solid(verts, faces, size, reps, tex_depth=1.0, inset=0.0)

Tile a VNF texture cell over a size [x, y] rectangle reps [nx, ny] times and close it into a watertight solid. Returns (verts, faces) for a polyhedron.