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                       Unpublished - All Rights Reserved

*******************************************************************************/
/*
The following example selects the Three Points default mode and
then creates a plane over the temporary plane specified by the three
selected points.
*/

#include <uf.h>
#include <uf_ui.h>
#include <uf_modl.h>
void ufusr(char *param, int *retcod, int param_len)
{
  double orientation[9] = {0,0,0,0,0,0,0,0,0};
  double origin[3] = {0,0,0};
  double pts[6] = {0,0,0,0,0,0};
  int i, error_code = 0;
  int mode, display, response;
  tag_t plane_eid;
  mode = 1;                     /* set mode to Three Points */
  display = 0;          /* display temporary plane */
  UF_initialize();
  error_code = UF_UI_specify_plane(
    "Click OK to accept Three Points default mode", &mode, displa
y,
     &response, orientation, origin, &plane_eid);
  /* if there's no error in specifying plane and the response */
  /* wasn't BACK or CANCEL, then create a plane from the */
  /* specified temporary plane */
  if ( !error_code && response != 1 && response != 2)
  {
     /* get a point on the X-axis */
     for (i=0; i<3; i++)
        pts[i] = origin[i] + orientation[i];
     /* get a point on the Y-axis */
     for (i=3; i<6; i++)
        pts[i] = origin[i-3] + orientation[i];
     FTN(uf5374)(origin,pts,&pts[3],&plane_eid);
  }
  UF_terminate();
}