ug三维图转二维图的函数是什么？

是啊，我找到了uc6481，ug帮助上说是add_view,但是我用了没效果啊，郁闷啊，谁能写个程序流程来，急用啊。

给你个例子，希望能有所帮助！
#include <stdlib.h>
#include <stdio.h>
#include <uf_ui.h>
#include <uf.h>
#include <uf_defs.h>
#include <uf_draw.h>
#include <uf_draw_types.h>
#include <uf_obj.h>
#include <uf_part.h>
#include <string.h>
#include <uf.h>
#include <uf_ui.h>
#include <uf_defs.h>
#include <uf_drf_types.h>
#include <uf_obj.h>
void ufusr(char *param, int *retcod, int param_len)
{
  int         ifail = 0;
  double      reference_point[2] = {200, 100};
  double      reference_point1[2] = {200 , 400};
  tag_t       drawing_tag = NULL_TAG;
  tag_t       new_sxview_tag;
  tag_t       part_tag = NULL_TAG;
  tag_t       view_tag = NULL_TAG;
  tag_t       draw_view_tag = NULL_TAG;
  tag_t       ortho_view_tag = NULL_TAG;
  tag_t       parent_view_tag = NULL_TAG;
  double          view_placement_pt[2]={500,420};
  double          sxview_scale = 2.0;
  double                      step_dir[3]={146,420,0};
  double                      arrow_dir[3]={130,420,0};
  UF_DRAW_proj_dir_t projection_direction = UF_DRAW_project_infer;
  char        error_message[133];
  char drawing_name[MAX_ENTITY_NAME_SIZE] = "ymh";
  UF_DRAW_info_t drawing_info;
drawing_info.size_state=UF_DRAW_CUSTOM_SIZE;
drawing_info.size.custom_size[0] = 594;
drawing_info.size.custom_size[1] = 841;
drawing_info.drawing_scale=1.0;
drawing_info.units=UF_PART_METRIC;  
drawing_info.projection_angle=UF_DRAW_FIRST_ANGLE_PROJECTION ;
  char   *view_name1 = "TOP@1";
  char    *view_name = "TOP";
  UF_DRAW_view_info_t view_info;
  
  view_info.view_status = UF_DRAW_ACTIVE_VIEW;
  view_info.anchor_point = NULL_TAG;
  view_info.view_scale = 1.0;
  view_info.use_ref_pt = FALSE;
  view_info.inherit_boundary = TRUE;
  ifail = UF_initialize();
  if( !ifail )
      part_tag = UF_PART_ask_display_part();
     ifail = UF_DRAW_create_drawing( drawing_name, &drawing_info,
                                        [$drawing_tag)]
  if( !ifail && part_tag != NULL_TAG )
      ifail = UF_DRAW_ask_current_drawing( [$drawing_tag )]
  
  if( !ifail && part_tag != NULL_TAG && drawing_tag != NULL_TAG)
  {
      ifail = UF_OBJ_cycle_by_name( view_name, [$view_tag )]
      if( !ifail && view_tag != NULL_TAG )
      {
          ifail = UF_DRAW_import_view( drawing_tag, view_tag,
                                       reference_point, &view_info,
                                       [$draw_view_tag )]}
  if( !ifail && drawing_tag != NULL_TAG )
      ifail = UF_OBJ_cycle_by_name( view_name1,
                                   [$parent_view_tag )]
  
        if( !ifail && view_tag != NULL_TAG )   
    {  ifail = UF_DRAW_add_orthographic_view( drawing_tag,
                                           parent_view_tag,
                                         projection_direction,
                                         reference_point1,
                                        [$ortho_view_tag )]
      }
  }
   if( ifail )
  {
      ifail = UF_get_fail_message( ifail, error_message );
      uc1601(  error_message,1 );
  }
  else if( part_tag == NULL_TAG )
      uc1601( "fails.\nError is: no active part.\n",1 );
  else if ( drawing_tag == NULL_TAG )
      uc1601( "fails.\nError is: no current drawing.\n" ,1);
  else if ( view_tag == NULL_TAG )
      uc1601( "fails.\nError is: invalid view tag.\n" ,1);
  else
     uc1601( "is successful.\n",1 );
  ifail = UF_terminate();
}
  
图中的位置尺寸可根据你图形自己调整一下。

太谢谢了。