gchar * a_vik_goto_get_search_string_for_this_place(VikWindow *vw)
{
if (!last_coord)
return NULL;
VikViewport *vvp = vik_window_viewport(vw);
const VikCoord *cur_center = vik_viewport_get_center(vvp);
if (vik_coord_equals(cur_center, last_coord)) {
return(last_successful_goto_str);
}
else
return NULL;
}
gulong vik_track_get_dup_point_count ( const VikTrack *tr )
{
gulong num = 0;
GList *iter = tr->trackpoints;
while ( iter )
{
if ( iter->next && vik_coord_equals ( &(VIK_TRACKPOINT(iter->data)->coord),
&(VIK_TRACKPOINT(iter->next->data)->coord) ) )
num++;
iter = iter->next;
}
return num;
}
void vik_track_remove_dup_points ( VikTrack *tr )
{
GList *iter = tr->trackpoints;
while ( iter )
{
if ( iter->next && vik_coord_equals ( &(VIK_TRACKPOINT(iter->data)->coord),
&(VIK_TRACKPOINT(iter->next->data)->coord) ) )
{
g_free ( iter->next->data );
tr->trackpoints = g_list_delete_link ( tr->trackpoints, iter->next );
}
else
iter = iter->next;
}
}
/* starting at the end, looks backwards for the last "double point", a duplicate trackpoint.
* If there is no double point, deletes all the trackpoints.
* Returns the new end of the track (or the start if there are no double points)
*/
VikCoord *vik_track_cut_back_to_double_point ( VikTrack *tr )
{
GList *iter = tr->trackpoints;
VikCoord *rv;
if ( !iter )
return NULL;
while ( iter->next )
iter = iter->next;
while ( iter->prev ) {
if ( vik_coord_equals((VikCoord *)iter->data, (VikCoord *)iter->prev->data) ) {
GList *prev = iter->prev;
rv = g_malloc(sizeof(VikCoord));
*rv = *((VikCoord *) iter->data);
/* truncate trackpoint list */
iter->prev = NULL; /* pretend it's the end */
g_list_foreach ( iter, (GFunc) g_free, NULL );
g_list_free( iter );
prev->next = NULL;
return rv;
}
iter = iter->prev;
}
/* no double point found! */
rv = g_malloc(sizeof(VikCoord));
*rv = *((VikCoord *) tr->trackpoints->data);
g_list_foreach ( tr->trackpoints, (GFunc) g_free, NULL );
g_list_free( tr->trackpoints );
tr->trackpoints = NULL;
return rv;
}
