Triangles (a, b, c) and (b, d, c) splits into triangles (a, b, m), (a, m, c), (m, d, c), and (b, d, m). I thought we would have to change the directionality of the new triangles to fit the halfedge definition, but after writing out the triangles, I can see that we don't actually need to change any winding.
Triangles (a, b, c) and (b, d, c) splits into triangles (a, b, m), (a, m, c), (m, d, c), and (b, d, m). I thought we would have to change the directionality of the new triangles to fit the halfedge definition, but after writing out the triangles, I can see that we don't actually need to change any winding.