PK_FACE_ask_vertices

PK_ERROR_code_t     PK_FACE_ask_vertices
(
--- received arguments ---
PK_FACE_t           face,          --- a face

--- returned arguments ---
int          *const n_vertices,    --- number of vertices (>= 0)
PK_VERTEX_t **const vertices       --- vertices (optional)
)


This function returns the set of vertices in the given face.


The output array 'vertices' is optional. If it is set to NULL, the function
will only compute the number of vertices in the face.