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                       Unpublished - All Rights Reserved

*******************************************************************************/
/* This example creates a linear centerline. */
#include <stdio.h>
#include <uf.h>
#include <uf_defs.h>
#include <uf_drf.h>
#include <uf_curve.h>
#include <uf_csys.h>
void ufusr(char *param, int *retcod, int param_len)
{
   int status = 0;
   char stat_msg[133];
   tag_t wcs, arc1_tag, arc2_tag, arc3_tag, cl_tag;
   UF_CURVE_arc_t  arc_coords;
   UF_DRF_object_t objects[3];
   status = UF_initialize();
   if (!status)
   {
      /* initialize the object structures */
      UF_DRF_init_object_structure(&objects[0]);
      UF_DRF_init_object_structure(&objects[1]);
      UF_DRF_init_object_structure(&objects[2]);
      /* create three arcs */
      UF_CSYS_ask_wcs(&wcs);
      UF_CSYS_ask_matrix_of_object(wcs, &arc_coords.matrix_tag);
      arc_coords.start_angle = 0.0;
      arc_coords.end_angle = TWOPI;
      arc_coords.arc_center[0] = 10.0;
      arc_coords.arc_center[1] = 10.0;
      arc_coords.arc_center[2] =  0.0;
      arc_coords.radius = 1.0;
      status = UF_CURVE_create_arc(&arc_coords, &arc1_tag);
   }
   if (!status)
   {
      arc_coords.arc_center[0] = 15.0;
      arc_coords.arc_center[1] = 15.0;
      status = UF_CURVE_create_arc(&arc_coords, &arc2_tag);
   }
   if (!status)
   {
      arc_coords.arc_center[0] = 20.0;
      arc_coords.arc_center[1] = 20.0;
      status = UF_CURVE_create_arc(&arc_coords, &arc3_tag);
   }
    if (!status)
   {
      objects[0].object_tag = arc1_tag;
      objects[0].object_view_tag = NULL_TAG;
      objects[0].object_assoc_type = UF_DRF_end_point;
      objects[0].object_assoc_modifier = UF_DRF_first_end_point;
      objects[1].object_tag = arc2_tag;
      objects[1].object_view_tag = NULL_TAG;
      objects[1].object_assoc_type = UF_DRF_end_point;
      objects[1].object_assoc_modifier = UF_DRF_first_end_point;
      objects[2].object_tag = arc3_tag;
      objects[2].object_view_tag = NULL_TAG;
      objects[2].object_assoc_type = UF_DRF_end_point;
      objects[2].object_assoc_modifier = UF_DRF_first_end_point;
      /* create a linear centerline */
      status = UF_DRF_create_linear_cline(3, objects, &cl_tag);
   }
   printf("UF_DRF_create_linear_cline ");
   if (status)
   {
      UF_get_fail_message(status, stat_msg);
      printf("has ERROR %d: %s.\n", status, stat_msg);
   }
   else
      printf("is successful.\n");
   UF_terminate();
}