PK_ERROR_code_t  PK_BODY_ask_fins
(
--- received arguments ---
PK_BODY_t        body,              --- a body

--- returned arguments ---
int       *const n_fins,            --- number of fins (>= 0)
PK_FIN_t **const fins               --- fins (optional)
)


This function returns the set of fins in the given body.


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