public static extern SymbCrvApproxMethodType TrimSetTrimCrvLinearApprox(double UVTolSamples, SymbCrvApproxMethodType UVMethod);
public static extern CagdPolylineStruct *TrimCrvs2Polylines(TrimSrfStruct *TrimSrf, int ParamSpace, double TolSamples, SymbCrvApproxMethodType Method);
public static extern CagdPolylineStruct *TrimCrv2Polyline(CagdCrvStruct *TrimCrv, double TolSamples, SymbCrvApproxMethodType Method, int OptiLin);
public static extern IPPolygonStruct *IPCurve2Polylines(CagdCrvStruct *Crv, double TolSamples, SymbCrvApproxMethodType Method);