Module stl 

STL export: a RasterizedModel’s faces as a triangle mesh file.

STL is a bag of triangles, each with a normal and its three corners listed counter-clockwise seen from outside. The triangles here are the ones the viewer draws (see crate::rasterize_model_tagged), so an exported mesh is exactly what is on screen. Their winding comes from the (u, v) triangulation, which says nothing about outside; the surface normals do — every face’s surface normal points out of its solid (see geop_core_topology::validation::face_orientation) — so each triangle is wound to agree with them.

Faces are sampled one by one, so two faces sharing an edge each sample it on their own: the mesh is as watertight as those samplings agree.

Structs

StlTriangle

One STL facet: its outward normal, and its corners counter-clockwise seen from outside.

Enums

StlFormat

Which of STL’s two encodings to write.

Functions

stl_triangles

The triangles of faces of raster, in the order given, wound outward.

write_stl

Write triangles as an STL file named name (the solid name an ASCII file carries, and the header of a binary one).