Cross-query two MeshBvh instances. Returns candidate triangle-index pairs
(iA, iB) where iA is in a.mesh and iB is in b.mesh, whose AABBs
(inflated by epsilon) overlap.
Pairs are not canonicalised — both meshes are distinct inputs, so order
is preserved (A first, B second).
Cross-query two MeshBvh instances. Returns candidate triangle-index pairs
(iA, iB)where iA is ina.meshand iB is inb.mesh, whose AABBs (inflated byepsilon) overlap.Pairs are not canonicalised — both meshes are distinct inputs, so order is preserved (A first, B second).