X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Froute%2Froute.hxx;h=6c5c5c876d8901cb334738a8e007c94e18b0dfcc;hb=f3c131ffaf04d8e04595c1271f8a70c8a9d89f5f;hp=75fac7f048739324612bafe53e5e4396cbd3ea86;hpb=f4ec02a592c1feb31d48325c23a4593265407008;p=simgear.git

diff --git a/simgear/route/route.hxx b/simgear/route/route.hxx
index 75fac7f0..6c5c5c87 100644
--- a/simgear/route/route.hxx
+++ b/simgear/route/route.hxx
@@ -52,7 +52,7 @@ private:
     route_list route;
     int current_wp;
 
-    void update_distance(int index);
+    void update_distance_and_track(int index);
 
 public:
 
@@ -102,6 +102,22 @@ public:
 	    return SGWayPoint( 0.0, 0.0, 0.0, SGWayPoint::WGS84, "invalid" );
 	}
     }
+    
+    inline SGWayPoint get_previous() const {
+	if ( (current_wp > 0) && (current_wp < (int)route.size()) ) {
+	    return route[current_wp - 1];
+	} else {
+	    return SGWayPoint( 0.0, 0.0, 0.0, SGWayPoint::WGS84, "invalid" );
+	}
+    }
+
+    inline SGWayPoint get_next() const {
+	if ( (current_wp + 1) < (int)route.size() ) {
+	    return route[current_wp+1];
+	} else {
+	    return SGWayPoint( 0.0, 0.0, 0.0, SGWayPoint::WGS84, "invalid" );
+	}
+    }
 
     /**
      * Set the current waypoint
@@ -142,14 +158,11 @@ public:
 
     /** Delete waypoint waypoint with index n  (last one if n < 0) */
     void delete_waypoint( int n = 0 );
-
+    
     /**
-     * Calculate perpendicular distance from the current route segment
-     * This routine assumes all points are laying on a flat plane and
-     * ignores the altitude (or Z) dimension.  For most accurate
-     * results, use with CARTESIAN way points.
+     * Helper, sum the distance members of each waypoint
      */
-    double distance_off_route( double x, double y ) const;
+    double total_distance() const;
 };