/*
The code in the following example creates an auxiliary view.
*/

#include <stdlib.h>
#include <stdio.h>
#include <uf.h>
#include <uf_defs.h>
#include <uf_draw.h>
#include <uf_obj.h>
#include <uf_part.h>
#include <uf_so.h>
void ufusr(char *param, int *retcod, int param_len)
{
  double      reference_point[2] = {10.0, 12.0};
  int         ifail = 0;
  tag_t       drawing_tag = NULL_TAG;
  tag_t       part_tag = NULL_TAG;
  tag_t       parent_view_tag = NULL_TAG;
  tag_t       aux_view_tag = NULL_TAG;
  tag_t       hinge_line_tag = NULL_TAG;
  tag_t       curve_tag = NULL_TAG;
  char        error_message[133];
  char        *view_name = "TOP@1";
  char        *object_name = "CURVE";
  UF_SO_update_option_t update_option =
UF_SO_update_within_modeling; 
  logical     reverse_option = FALSE;
  
  ifail = UF_initialize();
    
  if( !ifail )
      part_tag = UF_PART_ask_display_part();
            
  if( !ifail && part_tag != NULL_TAG )
      ifail = UF_DRAW_ask_current_drawing( &drawing_tag );
                                             
  if( !ifail && drawing_tag != NULL_TAG )
  
  /* Retrieve tag of named object to define the */
  
  /* view anchor point.                         */
      ifail = UF_OBJ_cycle_by_name( object_name, 
                                   &curve_tag );
    
  if( !ifail && curve_tag != NULL_TAG)
      ifail = UF_OBJ_cycle_by_name( view_name,
                                   &parent_view_tag );
                                 
  if( !ifail && parent_view_tag != NULL_TAG )
      ifail = uc6476(1);    /* set drawing state to modeling */
    
  if( !ifail && parent_view_tag != NULL_TAG )
             
      ifail = UF_SO_create_dirr_line( part_tag,
                                      update_option,
                                      curve_tag,
                                      reverse_option,
                                     &hinge_line_tag );
  if( !ifail && hinge_line_tag != NULL_TAG )
      ifail = uc6476(2); /* Set to drawing view */
      
  if( !ifail && hinge_line_tag != NULL_TAG )
      ifail = UF_DRAW_add_auxiliary_view( drawing_tag,
                                         parent_view_tag,
                                         hinge_line_tag,
                                         reference_point,
                                        &aux_view_tag );
  printf( "UF_DRAW_add_auxiliary_view " );
  if( ifail )
  {
      ifail = UF_get_fail_message( ifail, error_message );
      printf( "fails. \nError is:%s\n", error_message );
  }
  else if( part_tag == NULL_TAG )
      printf( "fails.\nError is: no active part.\n" );
  else if ( drawing_tag == NULL_TAG )
      printf( "fails.\nError is: no current drawing.\n" );
  else if ( parent_view_tag == NULL_TAG )
      printf( "fails.\nError is: no parent view.\n" );
  else if ( curve_tag == NULL_TAG )
      printf( "fails.\nError is: no curve.\n" );
  else if ( hinge_line_tag == NULL_TAG )
      printf( "fails.\nError is: no hinge line.\n" );
  else   
      printf( "is successful.\n" );
    
  ifail = UF_terminate();
}