X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fmath%2FSGGeodesy.hxx;h=060bf4d3f50ae98a51438805551ceb7121ad34e3;hb=cc9b817f0e20a879cd23ce7f8014b2dc6a5d493e;hp=8f8bf4a69928d6709669a71870690913aa7783a4;hpb=dcb95d131bc6aef1abe25d1f415e309f06e52436;p=simgear.git

diff --git a/simgear/math/SGGeodesy.hxx b/simgear/math/SGGeodesy.hxx
index 8f8bf4a6..060bf4d3 100644
--- a/simgear/math/SGGeodesy.hxx
+++ b/simgear/math/SGGeodesy.hxx
@@ -18,12 +18,6 @@
 #ifndef SGGeodesy_H
 #define SGGeodesy_H
 
-class SGGeoc;
-class SGGeod;
-
-template<typename T>
-class SGVec3;
-
 class SGGeodesy {
 public:
   // Hard numbers from the WGS84 standard.
@@ -51,6 +45,34 @@ public:
   /// Takes a geocentric coordinate data and returns the cartesian
   /// coordinates.
   static void SGGeocToCart(const SGGeoc& geoc, SGVec3<double>& cart);
+
+  // Geodetic course/distance computation
+  static bool direct(const SGGeod& p1, double course1,
+                     double distance, SGGeod& p2, double& course2);
+
+  static bool inverse(const SGGeod& p1, const SGGeod& p2, double& course1,
+                      double& course2, double& distance);
+
+  static double courseDeg(const SGGeod& from, const SGGeod& to);
+  static double distanceM(const SGGeod& from, const SGGeod& to);
+  static double distanceNm(const SGGeod& from, const SGGeod& to);
+    
+  // Geocentric course/distance computation
+  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