#include <dsdmod.hxx>
Role: Pointers to this SDM interface class DS_dmod should be considered as handles - they should always be forward-referenced, and never dereferenced. They are created, copied, and deleted by DM API's, and only used as handle (tag) arguments to DM API's. For example, the functions DM_make_bspline_curve and DM_make_bspline_surface will make a curve or surface DS_pfunc from arrays of knots and control points. The resulting DS_pfunc is then used to make a DS_dmod with one of the functions DM_make_dmod_curve or DM_make_dmod_surface; the resulting DS_dmod object assumes ownership of the DS_pfunc. After completing the desired DM API calls, the user must call DM_delete_dmod on the DS_dmod pointer.