pub fn thin_sheet(mesh: &TriMesh, linear: f64) -> Option<ThinSheet>Expand description
The first pair of triangles of mesh that form a sheet thinner than
linear, in ascending (first, second) order with first < second.
A pair qualifies when both triangles are non-degenerate, their unit
normals point opposite ways, the distance between them is at most
linear, every corner of each lies within linear of the other’s plane,
and, projected onto the first’s plane, they overlap in a polygon whose
doubled area exceeds linear times its perimeter: contact along a single
edge is not a sheet. Exactly coplanar pairs count. None when no pair
qualifies, and when linear is negative or not finite.
§Panics
Never. A malformed index buffer yields None rather than a panic.