NX9+VS2012

     #include <uf.h>

     #include <uf_curve.h>

     UF_initialize();

     //起点

     double ArcStartPoint[];

     ArcStartPoint[] = 0.0;

     ArcStartPoint[] = 0.0;

     ArcStartPoint[] = 0.0;

     tag_t ArcStartPointTag = NULL_TAG;

     UF_CURVE_create_point(ArcStartPoint, &ArcStartPointTag);

     //终点

     double ArcEndPoint[];

     ArcEndPoint[] = 100.0;

     ArcEndPoint[] = 0.0;

     ArcEndPoint[] = 0.0;

     tag_t ArcEndPointTag = NULL_TAG;

     UF_CURVE_create_point(ArcEndPoint, &ArcEndPointTag);

     //半径

     double RadiuValue = ;

     //类型

     UF_CURVE_limit_t limit[];

     UF_CURVE_limit_p_t pLimit[] = { &limit[], &limit[] };

     limit[].limit_type = UF_CURVE_limit_to_entity;

     limit[].limiting_obj = ArcStartPointTag;//按点

     limit[].limit_type = UF_CURVE_limit_to_entity;

     limit[].limiting_obj = ArcEndPointTag;//按点

     tag_t SupportPlane = NULL_TAG;

     tag_t ArcTag = NULL_TAG;

     UF_CURVE_create_arc_point_point_radius(ArcStartPointTag, ArcEndPointTag, RadiuValue, pLimit, SupportPlane, FALSE, &ArcTag);

     UF_terminate();