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[simgear.git] / simgear / math / SGGeodesy.hxx

diff --git a/simgear/math/SGGeodesy.hxx b/simgear/math/SGGeodesy.hxx
index 53e2cbb3734b749efc39923ae78434aa4ce7e072..cce38199b6b252de56afde984f67c3cbaf6c988d 100644 (file)
--- a/simgear/math/SGGeodesy.hxx
+++ b/simgear/math/SGGeodesy.hxx
@@ -50,6 +50,11 @@ public:
   static bool direct(const SGGeod& p1, double course1,
                      double distance, SGGeod& p2, double& course2);
 
+  /// overloaded version of above, returns new value directly, throws
+  /// an sg_exception on failure.
+  static SGGeod direct(const SGGeod& p1, double course1,
+                     double distance);
+
   static bool inverse(const SGGeod& p1, const SGGeod& p2, double& course1,
                       double& course2, double& distance);
 
@@ -61,7 +66,18 @@ public:
   static void advanceRadM(const SGGeoc& geoc, double course, double distance,
                           SGGeoc& result);
   static double courseRad(const SGGeoc& from, const SGGeoc& to);
+  static double distanceRad(const SGGeoc& from, const SGGeoc& to);
   static double distanceM(const SGGeoc& from, const SGGeoc& to);
+  
+  /**
+   * compute the intersection of two (true) radials (in degrees), or return false
+   * if no intersection culd be computed.
+   */
+  static bool radialIntersection(const SGGeoc& a, double aRadial, 
+    const SGGeoc& b, double bRadial, SGGeoc& result);
+    
+  static bool radialIntersection(const SGGeod& a, double aRadial, 
+    const SGGeod& b, double bRadial, SGGeod& result);
 };
 
 #endif