// 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.
//
// $Id$
#define _POLAR3D_HXX
-#ifndef __cplusplus
+#ifndef __cplusplus
# error This library requires C++
-#endif
+#endif
-
-#include <simgear/constants.h>
#include <simgear/math/point3d.hxx>
-
#include "SGMath.hxx"
-/**
- * Find the Altitude above the Ellipsoid (WGS84) given the Earth
- * Centered Cartesian coordinate vector Distances are specified in
- * meters.
- * @param cp point specified in cartesian coordinates
- * @return altitude above the (wgs84) earth in meters
- */
-inline double sgGeodAltFromCart(const Point3D& p)
-{
- SGGeod geod;
- SGGeodesy::SGCartToGeod(SGVec3<double>(p.x(), p.y(), p.z()), geod);
- return geod.getElevationM();
-}
-
-
-/**
- * Convert a polar coordinate to a cartesian coordinate. Lon and Lat
- * must be specified in radians. The SG convention is for distances
- * to be specified in meters
- * @param p point specified in polar coordinates
- * @return the same point in cartesian coordinates
- */
-inline Point3D sgPolarToCart3d(const Point3D& p)
-{
- SGVec3<double> cart;
- SGGeodesy::SGGeocToCart(SGGeoc::fromRadM(p.lon(), p.lat(), p.radius()), cart);
- return Point3D::fromSGVec3(cart);
-}
-
-
-/**
- * Convert a cartesian coordinate to polar coordinates (lon/lat
- * specified in radians. Distances are specified in meters.
- * @param cp point specified in cartesian coordinates
- * @return the same point in polar coordinates
- */
-inline Point3D sgCartToPolar3d(const Point3D& p)
-{
- SGGeoc geoc;
- SGGeodesy::SGCartToGeoc(SGVec3<double>(p.x(), p.y(), p.z()), geoc);
- return Point3D::fromSGGeoc(geoc);
-}
-
-
/**
* Calculate new lon/lat given starting lon/lat, and offset radial, and
* distance. NOTE: starting point is specifed in radians, distance is
* @param dist offset distance
* @return destination point in polar coordinates
*/
-Point3D calc_gc_lon_lat( const Point3D& orig, double course, double dist );
+inline Point3D calc_gc_lon_lat(const Point3D& orig, double course, double dist)
+{ return Point3D::fromSGGeoc(orig.toSGGeoc().advanceRadM(course, dist)); }
/**
* @param course resulting course
* @param dist resulting distance
*/
-void calc_gc_course_dist( const Point3D& start, const Point3D& dest,
- double *course, double *dist );
-
-#if 0
-/**
- * Calculate course/dist given two spherical points.
- * @param start starting point
- * @param dest ending point
- * @param course resulting course
- * @param dist resulting distance
- */
-void calc_gc_course_dist( const Point3D& start, const Point3D& dest,
- double *course, double *dist );
-#endif // 0
+inline void calc_gc_course_dist( const Point3D& start, const Point3D& dest,
+ double *course, double *dist )
+{
+ SGGeoc gs = start.toSGGeoc();
+ SGGeoc gd = dest.toSGGeoc();
+ *course = SGGeoc::courseRad(gs, gd);
+ *dist = SGGeoc::distanceM(gs, gd);
+}
#endif // _POLAR3D_HXX