ADD: new track message, Entity class and Position class

libs/geographiclib/wrapper/excel/cgeodesic.cpp

@@ -0,0 +1,31 @@
+#include "cgeodesic.h"
+#include "GeographicLib/Geodesic.hpp"
+#include "GeographicLib/Rhumb.hpp"
+
+extern "C" {
+
+  void gdirect(double lat1, double lon1, double azi1, double s12,
+               double& lat2, double& lon2, double& azi2) {
+    GeographicLib::Geodesic::WGS84().Direct(lat1, lon1, azi1, s12,
+                                            lat2, lon2, azi2);
+  }
+
+  void ginverse(double lat1, double lon1, double lat2, double lon2,
+                double& s12, double& azi1, double& azi2) {
+    GeographicLib::Geodesic::WGS84().Inverse(lat1, lon1, lat2, lon2,
+                                             s12, azi1, azi2);
+  }
+
+  void rdirect(double lat1, double lon1, double azi12, double s12,
+               double& lat2, double& lon2) {
+    GeographicLib::Rhumb::WGS84().Direct(lat1, lon1, azi12, s12,
+                                         lat2, lon2);
+  }
+
+  void rinverse(double lat1, double lon1, double lat2, double lon2,
+                double& s12, double& azi12) {
+    GeographicLib::Rhumb::WGS84().Inverse(lat1, lon1, lat2, lon2,
+                                          s12, azi12);
+  }
+
+}