HalfFace.halfface_vertex_ancestor
- HalfFace.halfface_vertex_ancestor(halfface, vertex)[source]
Return the vertex before the specified vertex in a specific face.
- Parameters:
- halffaceint
The identifier of the halfface.
- vertexint
The identifier of the vertex.
- Returns:
- int
The identifier of the vertex before the given vertex in the face cycle.
- Raises:
- ValueError
If the vertex is not part of the face.
See also