//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+
+#include <plib/sg.h>
+
+#include <simgear/math/vector.hxx>
#include "route.hxx"
// destructor
SGRoute::~SGRoute() {
}
+
+/** Update the length of the leg ending at waypoint index */
+void SGRoute::update_distance_and_track(int index)
+{
+ SGWayPoint& curr = route[ index ];
+ double course, dist;
+
+ if ( index == 0 ) {
+ dist = 0;
+ course = 0.0;
+ } else {
+ const SGWayPoint& prev = route[index - 1];
+ curr.CourseAndDistance( prev, &course, &dist );
+ }
+
+ curr.set_distance(dist);
+ curr.set_track(course);
+}
+
+/**
+ * Add waypoint (default), or insert waypoint at position n.
+ * @param wp a waypoint
+ */
+void SGRoute::add_waypoint( const SGWayPoint &wp, int n ) {
+ int size = route.size();
+ if ( n < 0 || n >= size ) {
+ n = size;
+ route.push_back( wp );
+ } else {
+ route.insert( route.begin() + n, 1, wp );
+ // update distance of next leg if not at end of route
+ update_distance_and_track( n + 1 );
+ }
+ update_distance_and_track( n );
+}
+
+/** Delete waypoint with index n (last one if n < 0) */
+void SGRoute::delete_waypoint( int n ) {
+ int size = route.size();
+ if ( size == 0 )
+ return;
+ if ( n < 0 || n >= size )
+ n = size - 1;
+
+ route.erase( route.begin() + n );
+ // update distance of next leg if not at end of route
+ if ( n < size - 1 )
+ update_distance_and_track( n );
+}
+
+double SGRoute::total_distance() const {
+ double total = 0.0;
+ for (unsigned int i=0; i<route.size(); ++i) {
+ total += route[i].get_distance();
+ }
+ return total;
+}