X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fmagvar%2Fmagvar.hxx;h=605bece722bc09a99a80a249f803db8e84870048;hb=086a30e61aa153008bd403c79cd1bff3ad594179;hp=c2e80bc4a5194b17480ddf624b03292d3abeb674;hpb=dcb95d131bc6aef1abe25d1f415e309f06e52436;p=simgear.git

diff --git a/simgear/magvar/magvar.hxx b/simgear/magvar/magvar.hxx
index c2e80bc4..605bece7 100644
--- a/simgear/magvar/magvar.hxx
+++ b/simgear/magvar/magvar.hxx
@@ -33,6 +33,9 @@
 #endif
 
 
+// forward decls
+class SGGeod;
+
 /**
  * Magnetic variation wrapper class.
  *
@@ -78,6 +81,11 @@ public:
      */
     void update( double lon, double lat, double alt_m, double jd );
 
+    /**
+     * overloaded variant taking an SGGeod to specify position
+     */
+    void update( const SGGeod& geod, double jd );
+
     /** @return the current magnetic variation in radians. */
     double get_magvar() const { return magvar; }
 
@@ -95,5 +103,9 @@ public:
  */
 double sgGetMagVar( double lon, double lat, double alt_m, double jd );
 
+/**
+ * overload version of the above to take a SGGeod
+ */
+double sgGetMagVar( const SGGeod& pos, double jd );
 
 #endif // _MAGVAR_HXX