/******************************************************************************
             Copyright (c) 1999 Unigraphics Solutions, Inc.
                       Unpublished - All Rights Reserved

*******************************************************************************/
/* The following example generates some geometry, and shows a sample
for creating a combined curve.
*/
#include <stdio.h>
#include <uf.h>
#include <uf_curve.h>
#include <uf_defs.h>
#include <uf_modl.h>
#define UF_CALL(X) (report( __FILE__, __LINE__, #X, (X)))
static int report( char *file, int line, char *call, int irc)
{
    if (irc)
    {
        char    messg[133];
        printf("%s, line %d:  %s\n", file, line, call);
        (UF_get_fail_message(irc, messg)) ?
            printf("    returned a %d\n", irc) :
            printf("    returned error %d:  %s\n", irc, messg);
    }
    return(irc);
}
static void do_ugopen_api(void)
{
  UF_CURVE_combine_curves_direction_t first_dir;
  UF_CURVE_combine_curves_direction_t second_dir;
  UF_CURVE_combine_curves_direction_t ask_first_dir;
  UF_CURVE_combine_curves_direction_t ask_second_dir;
  UF_CURVE_line_t line_coords;
  uf_list_p_t curve_list;
  double first_vect[3] = {0.,0.,1.};
  double second_vect[3] = {0.,-1.,0.};
  double curve_tol;
  tag_t line1;
  tag_t line2;
  tag_t line3;
  tag_t feature_tag;
  tag_t ask_line1;
  tag_t ask_line2;
  char crv_aprox_tol[133];
  char *ask_tol;

/* Ask system distance tolerance */
  UF_MODL_ask_distance_tolerance(&curve_tol);
  sprintf(crv_aprox_tol, "%.15g", curve_tol);
/* Create geometry */
  line_coords.start_point[0] = 0.0;
  line_coords.start_point[1] = 0.0;
  line_coords.start_point[2] = 0.0;
  line_coords.end_point[0] = 0.0;
  line_coords.end_point[1] = 2.0;
  line_coords.end_point[2] = 0.0;
  UF_CALL(UF_CURVE_create_line(&line_coords, &line1));
  line_coords.start_point[0] = -2.0;
  line_coords.start_point[1] = 3.0;
  line_coords.start_point[2] = 4.0;
  line_coords.end_point[0] = 4.0;
  line_coords.end_point[1] = 3.0;
  line_coords.end_point[2] = 4.0;
  UF_CALL(UF_CURVE_create_line(&line_coords, &line2));
  line_coords.start_point[0] = 0.0;
  line_coords.start_point[1] = 0.0;
  line_coords.start_point[2] = 0.0;
  line_coords.end_point[0] = 2.0;
  line_coords.end_point[1] = 2.0;
  line_coords.end_point[2] = 0.0;
  UF_CALL(UF_CURVE_create_line(&line_coords, &line3));
/* Initialize the projection information */
  first_dir.direction_type = UF_CURVE_ALONG_FIXED_VECTOR;
  first_dir.direction_struct.vector[0] = first_vect[0];
  first_dir.direction_struct.vector[1] = first_vect[1];
  first_dir.direction_struct.vector[2] = first_vect[2];
  second_dir.direction_type = UF_CURVE_ALONG_FIXED_VECTOR;
  second_dir.direction_struct.vector[0] = second_vect[0];
  second_dir.direction_struct.vector[1] = second_vect[1];
  second_dir.direction_struct.vector[2] = second_vect[2];
/* Create the combined curve */
  UF_CALL(UF_CURVE_create_combine_curves(line1, &first_dir, line2,
                                         &second_dir,
crv_aprox_tol,
                                         &feature_tag));
/* Ask the input parameters for the combined feature just created
*/
  UF_CALL(UF_CURVE_ask_combine_curves(feature_tag, &ask_line1,
                                      &ask_first_dir, &ask_line2,
                                      &ask_second_dir, &ask_tol,
                                      &curve_list));
  UF_MODL_delete_list(&curve_list);
/* Edit the combined curve feature just created, by replacing one
   of the input curves */
  UF_CALL(UF_CURVE_edit_combine_curves(feature_tag, line3,
                                       &ask_first_dir, ask_line2,
                                       &ask_second_dir, ask_tol));
  UF_free(ask_tol);
}
/*ARGSUSED*/
void ufusr(char *param, int *retcode, int paramLen)
{
    if (!UF_CALL(UF_initialize()))
    {
        do_ugopen_api();
        UF_CALL(UF_terminate());
    }
}
int ufusr_ask_unload(void)
{
    return (UF_UNLOAD_IMMEDIATELY);
}