/*
The following example retrieves information about an unfolded
section line and then creates a similar section line and view.
*/
#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_obj.h>
void ufusr(char *param, int *retcod, int param_len)
{
    int                         ifail = 0;
    int                         num_sxviews;
    int                         num_sxsegs;
    int                         num_user_defined_sxsegs = 0;
    int                         seg_ndx;
    tag_t                       sxline1_tag;
    tag_t                       pview_tag;
    tag_t                       dwg_tag;
    tag_t                       curve_tag;
    tag_t                       new_sxview_tag;
    tag_t *                     sxview_tags = NULL;
    tag_t *                     sxseg_tags = NULL;
    double                      step_dir[3];
    double                      arrow_dir[3];
    double                      view_placement_pt[2];
    double                      sxview_scale = 1.0;
    char                        error_message[133];
    char *                      sxline1 = "unfolded_sxline1";
    char                        dwg_name[MAX_FSPEC_SIZE +1];
    char                        sxview_name[MAX_FSPEC_SIZE +1];
    UF_DRAW_sxline_status_t     sxline_status;
    UF_DRAW_sxseg_info_t        sxseg_info;
    UF_DRF_object_p_t           object;
    UF_DRAW_sxline_sxsegs_t     unfolded_sxsegs[99];
    ifail = UF_initialize();
    if( ifail == 0 )
        /* Find the tag of the section line from its name. */
        ifail = UF_OBJ_cycle_by_name( sxline1, &sxline1_tag );
    if( ifail == 0 )
    {
        /* Retrieve information about an unfolded section line. */
        ifail = UF_DRAW_ask_unfolded_sxline( sxline1_tag, step_dir,
            arrow_dir, &pview_tag, &num_sxviews, &sxview_tags,
            &num_sxsegs, &sxseg_tags, &sxline_status );
    }
    if( ifail == 0 )
    {
        /* Read current drawing name. */
        ifail = uc6492( dwg_name );
    }
    if( ifail == 0 )
        /* Get section view name from its tag. */
        ifail = UF_OBJ_ask_name( sxview_tags[0], sxview_name );
    if( ifail == 0 )
    {
        /* Find the drawing location of the section view. */
        ifail = uc6483( dwg_name, sxview_name, view_placement_pt );
        /* Move it slightly in the x direction. */
        view_placement_pt[0] += 1.0;
    }
    if( ifail == 0 )
    {
        /* Get the section line segment information. */
        for( seg_ndx = 0; seg_ndx < num_sxsegs; seg_ndx++ )
        {
            ifail = UF_DRAW_ask_sxline_sxseg( sxseg_tags[seg_ndx],
                &sxseg_info, &curve_tag, &object );
            if( ifail ) break;

            /* Save only user defined sxsegs. */
            if( sxseg_info.sxseg_mode == UF_DRAW_user_defined_sxseg
)
            {
              unfolded_sxsegs[num_user_defined_sxsegs].sxseg_type =
                    sxseg_info.sxseg_type;

unfolded_sxsegs[num_user_defined_sxsegs].sxseg_object=
                    object;
              unfolded_sxsegs[num_user_defined_sxsegs].sxseg_angle
=
                    sxseg_info.sxseg_angle;
              num_user_defined_sxsegs++;
            }
            else
                UF_free( object );
        }
    }
    if( ifail == 0 )
    {
        /* Get the current drawing tag. */
        ifail = UF_DRAW_ask_current_drawing( &dwg_tag );
    }
    /* Create a similar unfolded section line. */
    if( ifail == 0 )
    {
        ifail = UF_DRAW_create_unfolded_sxview( dwg_tag,
            sxview_scale, step_dir, arrow_dir, pview_tag,
            num_user_defined_sxsegs, unfolded_sxsegs,
            view_placement_pt, &new_sxview_tag );
    }
    if( num_user_defined_sxsegs > 0 )
    {
        for( seg_ndx = 0; seg_ndx<num_user_defined_sxsegs;
            seg_ndx++ )
        {
            /* Free each of the object structures. */
            UF_free( (unfolded_sxsegs[seg_ndx].sxseg_object) );
        }
    }
    UF_free( sxview_tags );
    UF_free( sxseg_tags );
    printf( "UF_DRAW_create_unfolded_sxview sample " );
    if( ifail != 0 )
    {
        ifail = UF_get_fail_message( ifail, error_message );
        printf( "fails.\nError is: %s\n", error_message );
    }
    else
        printf( "is successful.\n" );
    UF_terminate();
}