//
// 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.
//
// $Id$
#define _MAGVAR_HXX
-#ifndef __cplusplus
+#ifndef __cplusplus
# error This library requires C++
-#endif
+#endif
+// forward decls
+class SGGeod;
+
/**
* Magnetic variation wrapper class.
*
*/
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; }
*/
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