pub fn mesh_to_yup_in_place(mesh: &mut MeshData)Expand description
Rewrite a mesh into the Y-up wire frame in place: positions, normals, and
the per-mesh origin together, so the mesh stays internally consistent.
Used by the JSON transport, which serializes MeshData directly. The
parquet transports apply zup_to_yup fused into their columnar extraction
instead (same math, no extra pass over the vertices).