pub fn sectioned_spine(
sections: &[(Rings, Vec<DVec3>)],
) -> Result<TriMesh, GeomError>Expand description
Loft explicit sections placed along a spine.
The caller has already resolved each section’s profile and placement, so this only stitches them. Sections must share a ring structure: a spine whose sections differ in topology has no vertex correspondence, and pairing by index would weld unrelated points.