//
// Written by Curtis Olson, started February 2000.
//
-// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the
-// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-// Boston, MA 02111-1307, USA.
+// 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
#include <simgear/compiler.h>
-#ifdef SG_HAVE_STD_INCLUDES
-# include <cmath>
-#else
-# ifdef SG_MATH_EXCEPTION_CLASH
-# define exception C_exception
-# endif
-# include <math.h>
-#endif
+#include <cmath>
+
#include <plib/sg.h>
* 6378.165 but this is probably close enough */
#define SG_EARTH_RAD 6378.155
+// Maximum terrain elevation from sea level
+#define SG_MAX_ELEVATION_M 9000.0
// Earth parameters for WGS 84, taken from LaRCsim/ls_constants.h
/** Nautical Miles to Radians */
#define SG_RAD_TO_NM 3437.7467707849392526
-/** Miles per second to Knots */
+/** meters per second to Knots */
#define SG_MPS_TO_KT 1.9438444924406046432
-/** Knots to Miles per second */
+/** Knots to meters per second */
#define SG_KT_TO_MPS 0.5144444444444444444
-/** Miles per second to Miles per hour */
+/** Feet per second to Knots */
+#define SG_FPS_TO_KT 0.5924838012958962841
+
+/** Knots to Feet per second */
+#define SG_KT_TO_FPS 1.6878098571011956874
+
+/** meters per second to Miles per hour */
#define SG_MPS_TO_MPH 2.2369362920544020312
-/** Miles per hour to Miles per second */
+/** meetrs per hour to Miles per second */
#define SG_MPH_TO_MPS 0.44704
/** Meters per second to Kilometers per hour */
#define SG_MPS_TO_KMH 3.6
-/** Kilometers per hour to Miles per second */
+/** Kilometers per hour to meters per second */
#define SG_KMH_TO_MPS 0.2777777777777777778
/** Pascal to Inch Mercury */