PK_ERROR_code_t      PK_BSURF_create
(
--- received arguments ---
const PK_BSURF_sf_t *bsurf_sf, --- b-surface standard form

--- returned arguments ---
PK_BSURF_t    *const bsurf     --- b-surface
)


This function creates a b-surface from the standard form.


Specific Errors:
    PK_ERROR_zero_interval          knot set covers a zero interval
    PK_ERROR_periodic_open          periodic surface is not closed
    PK_ERROR_periodic_not_smooth    periodic surface is not smooth at the seam
    PK_ERROR_bad_dimension          dimension != 3 polynomial or != 4 rational
    PK_ERROR_cant_make_bspline      failed to create the surface


Takes a standard form, and creates a b-surface.  Refer to the documentation
of  PK_BSURF_sf_t for a description of the standard form.  It is the
responsibility of the application to ensure that the surface does not
intersect itself, and that any periodic seam has G1 continuity. Only 3-space
surfaces may be created by this function.