Merge branch 'fredb/effect-stuff'

[simgear.git] / simgear / magvar / magvar.hxx

diff --git a/simgear/magvar/magvar.hxx b/simgear/magvar/magvar.hxx
index c72c8e601dc9f644e842f40db13e655b0f5d0aa6..6a97e5ea7719eb3eb137910c8b6641ae82de96d4 100644 (file)
--- a/simgear/magvar/magvar.hxx
+++ b/simgear/magvar/magvar.hxx
@@ -19,7 +19,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
@@ -28,11 +28,14 @@
 #define _MAGVAR_HXX
 
 
-#ifndef __cplusplus                                                          
+#ifndef __cplusplus
 # error This library requires C++
-#endif                                   
+#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; }