PK_ERROR_code_t   PK_SURF_ask_params
(
--- received arguments ---
PK_SURF_t         surf,     --- surface

--- returned arguments ---
PK_PARAM_sf_t     param[2]  --- standard form of parameterisation of surface
)


This function returns information about the parameterisation of the
given surface.


For a description of the information returned, see the documentation for
PK_PARAM_sf_t.

`param[0]' describes the parameterisation in the U direction and `param[1]'
describes the parameterisation in the V direction.