public static extern int TrimRemoveCrvSegTrimCrvs(TrimCrvSegStruct *TrimCrvSeg, TrimCrvStruct **TrimCrvs);
public static extern int TrimClassifyTrimmingLoops(TrimCrvStruct **TrimLoops);
public static extern int TrimSrfSubdivTrimmingCrvs(TrimCrvStruct *TrimCrvs, double t, CagdSrfDirType Dir, TrimCrvStruct **TrimCrvs1, TrimCrvStruct **TrimCrvs2);