NX11+VS2013

 #include <uf.h>

 #include <uf_ui.h>

 #include <uf_modl.h>

 #include <uf_curve.h>

 UF_initialize();

 //点构造器

 char sCue[] = "点构造器";

 UF_UI_POINT_base_method_t base_method = UF_UI_POINT_INFERRED;

 tag_t tPoint = NULL_TAG;

 double sBasePoint[] = { , ,  };

 int iRespone;

 UF_UI_point_construct(sCue, &base_method, &tPoint, sBasePoint, &iRespone);

 //获取点在面上U,V方向的位置

 tag_t face_id = ;

 double ref_pnt[];

 ref_pnt[] = sBasePoint[];

 ref_pnt[] = sBasePoint[];

 ref_pnt[] = sBasePoint[];

 double parm[];

 double face_pnt[];

 UF_MODL_ask_face_parm(face_id, ref_pnt, parm, face_pnt);

 //获取点在面上的向量方向

 double point[];

 double u1[];

 double v1[];

 double u2[];

 double v2[];

 double unit_norm[];

 double radii[];

 UF_MODL_ask_face_props(face_id, parm, point, u1, v1, u2, v2, unit_norm, radii);

 //创建直线

 UF_CURVE_line_t line_coords;

 line_coords.start_point[] = ref_pnt[];

 line_coords.start_point[] = ref_pnt[];

 line_coords.start_point[] = ref_pnt[];

 line_coords.end_point[] = ref_pnt[] + unit_norm[];

 line_coords.end_point[] = ref_pnt[] + unit_norm[];

 line_coords.end_point[] = ref_pnt[] + unit_norm[];

 tag_t line_tag = NULL_TAG;

 UF_CURVE_create_line(&line_coords, &line_tag);

 UF_terminate();

 Caesar卢尚宇

 2019年10月22日