/*
This sample program below demonstrates the use of:
 * UF_DRAW_ask_sxsolids_of_sxview,
 * UF_DRAW_ask_sxedges_of_sxsolid, UF_DRAW_ask_xhatch_of_sxsolid,
 * and UF_DRAW_ask_curve_of_sxedge.
*/
#include <stdio.h>
#include <uf.h>
#include <uf_defs.h>
#include <uf_draw.h>
#include <uf_draw_types.h>
#include <uf_drf_types.h>
#include <uf_view.h>
void ufusr(char *param, int *retcod, int param_len)
{
    int                         ifail = 0;
    int                         num_sxedges;
    int                         num_sxsolids;
    tag_t                       curve_tag;
    tag_t                       sxview_tag;
    tag_t                       xhatch_tag;
    tag_t *                     sxsolid_tags = NULL;
    tag_t *                     sxedge_tags = NULL;
    char                        error_message[133];
    char *                      sxview1 = "SX@2";
    ifail = UF_initialize();
    if( !ifail )
    {
        /* Find the tag of the section view from its name. */
        ifail = UF_VIEW_ask_tag_of_view_name( sxview1,
                                              &sxview_tag );
    }
    if( !ifail )
    {
        /* Retrieve the section solids associated to the first
         leg of the section view. */
        ifail = UF_DRAW_ask_sxsolids_of_sxview(
                    sxview_tag,
                    UF_DRAW_sxline_leg1,
                    &num_sxsolids,
                    &sxsolid_tags );
    }
    if( !ifail )
    {
        /* Retrieve the crosshatch associated to the
           first section solid. */
        ifail = UF_DRAW_ask_xhatch_of_sxsolid( sxsolid_tags[0],
                                               &xhatch_tag );
    }
    if( !ifail )
    {
        /* Retrieve the section edges of the first section
           solid. */
        ifail = UF_DRAW_ask_sxedges_of_sxsolid( sxsolid_tags[0],
                                                &num_sxedges,
                                                &sxedge_tags );
    }
    if( !ifail )
    {
        /* Retrieve the curve of the first section edge in the
           array. */
        ifail = UF_DRAW_ask_curve_of_sxedge( sxedge_tags[0],
                                             &curve_tag );
    }
    UF_free( sxedge_tags );
    UF_free( sxsolid_tags );
    printf( "UF_DRAW_ask_sxsolids_of_sxview sample " );
    if( ifail )
    {
        ifail = UF_get_fail_message( ifail, error_message );
        printf( "fails.\nError is: %s\n", error_message );
    }
    else
        printf( "is successful.\n" );
    ifail = UF_terminate();
}