If the triangle/plane is degenerate, the case is handled separately. If we know the plane is not degenerate, the normal should not be recomputed in a different manner, which might lead to a null normal and some issues down the line.
If the triangle/plane is degenerate, the case is handled separately. If we know the plane is not degenerate, the normal should not be recomputed in a different manner, which might lead to a null normal and some issues down the line.