- // Vertex* getOpposedVertex (Quad* face, Vertex* vertex);
- Edge* getPerpendicularEdge (Quad* face, Vertex* vertex);
+ Vertex* opposedVertex (Quad* face, Vertex* vertex);
+ Edge* perpendicularEdge (Quad* face, Vertex* vertex);
+ Quad* perpendicularQuad (Quad* face, Edge* edge);
+ Edge* getPerpendicularEdge (Quad* face, Vertex* vertex)
+ { return perpendicularEdge (face, vertex); }