Module simplify 

Per-element mesh simplification for the demesher (cavity removal, grid vertex-clustering decimation, bounding-box collapse). Per-element mesh simplification (“demesher”).

Reduces an element mesh’s triangle count for lightweight re-export: enclosed-cavity removal (drops shells fully contained inside the outer shell — bolt holes, internal machining detail), grid vertex-clustering decimation (Rust port of the renderer’s LOD1 simplifyIndicesByClustering, which is proven on this pipeline’s unwelded flat-shaded facet soup), and bounding-box collapse. All passes key on vertex POSITION, never on index topology, because the pipeline deliberately emits per-face duplicated vertices (issue #846).

Structs

SimplifyOptions

Simplification tuning for one element mesh.

SimplifyStats

What simplify_mesh did to one element mesh.

Functions

simplify_mesh

Simplify one element mesh. Returns a new mesh carrying the input’s placement/frame metadata (origin, rtc_applied, local_bounds, local_to_world) so world reconstruction (world = origin + position (+ rtc)) and the inverse-placement export path keep working.