Capture a lineage-based reference to edge: its two adjacent faces' roles plus a geometric hint. Returns undefined when the edge doesn't bound two faces (a boundary/degenerate edge) or when either bounding face has no role yet.
edge
Capture a lineage-based reference to
edge: its two adjacent faces' roles plus a geometric hint. Returns undefined when the edge doesn't bound two faces (a boundary/degenerate edge) or when either bounding face has no role yet.