//uf转pktag_tAsk_PkTag(tag_t tUfBody){tag_t pkBody=0;UF_CALL(UF_PS_ask_ps_tag_of_object(tUfBody,&pkBody));returnpkBody;}//检查是否是封闭的圆柱面boolCheckCylFace(tag_t FaceTag){PK_FACE_t face_pstag=Ask_PkTag(FaceTag);PK_LOOP_t*face_loops=PK_ENTITY_null;intface_loops_num=0;UF_CALL(PK_FACE_ask_loops(face_pstag,&face_loops_num,&face_loops));intstep=0;while(step<face_loops_num){PK_LOOP_type_t loop_type=PK_ENTITY_null;PK_LOOP_ask_type(*face_loops,&loop_type);//环类型属于绕圈的if(loop_type==PK_LOOP_type_winding_c){returntrue;}step++;face_loops++;}returnfalse;}