关于拉伸特征的标识及其倒圆角问题

jiang_zp

我创建了一个拉伸体，其特征原型是
extern int UF_MODL_create_extruded (uf_list_p_t objects,      
                                                      char * taper_angle,      
                                                      char ** limit,                 
                                                      double point[ 3 ],         
                                                      double direction[ 3 ],     
                                                      UF_FEATURE_SIGN sign,  
                                                      uf_list_p_t * features );
      features是否是它的标识？如果不是，要如何获得它的标识？在这个拉伸体上面如何进行其它操作，如倒圆角。下面是一个拉伸的例子，
如何在它的边上倒圆角？劳烦大虾指教。
void do_ugopen_api()
{
    double direction[3]={0.0,0.0,-1.0};    //拉伸方向
    int number=1;
    char *taper="0";
    double high=10;
    uf_list_p_t features;     
    ////输入参数
  
  double  pt1[3] = {0,0,0.0};
  double  pt2[3] = {0,50,0.0};
  double  pt3[3] = {40,50,0.0};
  double  pt4[3] = {40.0,0.0,0.0};
  double ref_pt[3];
  char *part_name = "arm";
  char *taper_angle = "0.0";
  char temp[133];
  sprintf(temp,"%f",-high);            //将double型的高度值转为char型
  char *limit1[2] = {"0.0", temp};
  int english_units = 1, i, count = 4;
  tag_t objarray[11];
  uf_list_p_t loop_list;
  UF_FEATURE_SIGN create = UF_NULLSIGN;
  UF_CURVE_line_t line1, line2, line3,line4;
  
  line1.start_point[0] =  pt1[0];
  line1.start_point[1] =  pt1[1];
  line1.start_point[2] =  pt1[2];
  line1.end_point[0]   = pt2[0];
  line1.end_point[1]   = pt2[1];
  line1.end_point[2]   = pt2[2];
  line2.start_point[0] = line1.end_point[0];
  line2.start_point[1] = line1.end_point[1];
  line2.start_point[2] = line1.end_point[2];
  line2.end_point[0]   = pt3[0];
  line2.end_point[1]   = pt3[1];
  line2.end_point[2]   = pt3[2];
  line3.start_point[0] = line2.end_point[0];
  line3.start_point[1] = line2.end_point[1];
  line3.start_point[2] = line2.end_point[2];
  line3.end_point[0]   = pt4[0];
  line3.end_point[1]   = pt4[1];
  line3.end_point[2]   = pt4[2];
  line4.start_point[0] = line3.end_point[0];
  line4.start_point[1] = line3.end_point[1];
  line4.start_point[2] = line3.end_point[2];
  line4.end_point[0]   = pt1[0];
  line4.end_point[1]   = pt1[1];
  line4.end_point[2]   = pt1[2];
  
  UF_CURVE_create_line([$line1,&objarray[0])]     //创建线条1
  UF_CURVE_create_line([$line2,&objarray[1])]
  UF_CURVE_create_line([$line3,&objarray[2])]
  UF_CURVE_create_line([$line4,&objarray[3])]
  
  UF_MODL_create_list([$loop_list)]    //创建线框表链
  
  for(i = 0; i < count; i++)
  {
    UF_MODL_put_list_item(loop_list, objarray);         //将线1-4放进列表loop_list中
  }
  UF_MODL_create_extruded(loop_list, taper_angle, limit1,
                         ref_pt, direction, create, [$features)] //拉伸操作  
}