// 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.
//
#ifndef SGGeod_H
public:
/// Default constructor, initializes the instance to lat = lon = elev = 0
SGGeod(void);
-// 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.
- /// Note that this conversion is relatively expensive to compute
- SGGeod(const SGGeoc& geoc);
/// Factory from angular values in radians and elevation is 0
static SGGeod fromRad(double lon, double lat);
static SGGeod fromRadM(double lon, double lat, double elevation);
/// Factory from angular values in degrees and elevation in m
static SGGeod fromDegM(double lon, double lat, double elevation);
+ /// Factory from an other SGGeod and a different elevation in m
+ static SGGeod fromGeodM(const SGGeod& geod, double elevation);
+ /// Factory from an other SGGeod and a different elevation in ft
+ static SGGeod fromGeodFt(const SGGeod& geod, double elevation);
+ /// Factory to convert position from a cartesian position assumed to be
+ /// in wgs84 measured in meters
+ /// Note that this conversion is relatively expensive to compute
+ static SGGeod fromCart(const SGVec3<double>& cart);
+ /// Factory to convert position from a geocentric position
+ /// Note that this conversion is relatively expensive to compute
+ static SGGeod fromGeoc(const SGGeoc& geoc);
/// Return the geodetic longitude in radians
double getLongitudeRad(void) const;
/// Set the geodetic elevation from the argument given in feet
void setElevationFt(double elevation);
+ /// Compare two geodetic positions for equality
+ bool operator == ( const SGGeod & other ) const;
+
+ /// check the Geod contains sane values (finite, inside appropriate
+ /// ranges for lat/lon)
+ bool isValid() const;
private:
/// This one is private since construction is not unique if you do
/// not know the units of the arguments. Use the factory methods for
/// that purpose
SGGeod(double lon, double lat, double elevation);
- /// The actual data, angles in degree, elevation in meters
+ //// FIXME: wrong comment!
+ /// The actual data, angles in degrees, elevation in meters
/// The rationale for storing the values in degrees is that most code places
/// in flightgear/terragear use degrees as a nativ input and output value.
/// The places where it makes sense to use radians is when we convert
{
}
-inline
-SGGeod::SGGeod(const SGVec3<double>& cart)
-{
- SGGeodesy::SGCartToGeod(cart, *this);
-}
-
-inline
-SGGeod::SGGeod(const SGGeoc& geoc)
-{
- SGVec3<double> cart;
- SGGeodesy::SGGeocToCart(geoc, cart);
- SGGeodesy::SGCartToGeod(cart, *this);
-}
-
inline
SGGeod
SGGeod::fromRad(double lon, double lat)
#endif
}
+inline
+SGGeod
+SGGeod::fromGeodM(const SGGeod& geod, double elevation)
+{
+ return SGGeod(geod._lon, geod._lat, elevation);
+}
+
+inline
+SGGeod
+SGGeod::fromGeodFt(const SGGeod& geod, double elevation)
+{
+ return SGGeod(geod._lon, geod._lat, elevation*SG_FEET_TO_METER);
+}
+
+inline
+SGGeod
+SGGeod::fromCart(const SGVec3<double>& cart)
+{
+ SGGeod geod;
+ SGGeodesy::SGCartToGeod(cart, geod);
+ return geod;
+}
+
+inline
+SGGeod
+SGGeod::fromGeoc(const SGGeoc& geoc)
+{
+ SGVec3<double> cart;
+ SGGeodesy::SGGeocToCart(geoc, cart);
+ SGGeod geod;
+ SGGeodesy::SGCartToGeod(cart, geod);
+ return geod;
+}
+
inline
double
SGGeod::getLongitudeRad(void) const
_elevation = elevation*SG_FEET_TO_METER;
}
+inline
+bool
+SGGeod::operator == ( const SGGeod & other ) const
+{
+ return _lon == other._lon &&
+ _lat == other._lat &&
+ _elevation == other._elevation;
+}
+
+inline
+bool
+SGGeod::isValid() const
+{
+ if (SGMiscd::isNaN(_lon))
+ return false;
+ if (SGMiscd::isNaN(_lat))
+ return false;
+#ifdef SG_GEOD_NATIVE_DEGREE
+ return (_lon >= -180.0) && (_lon <= 180.0) &&
+ (_lat >= -90.0) && (_lat <= 90.0);
+#else
+ return (_lon >= -SGD_PI) && (_lon <= SGD_PI) &&
+ (_lat >= -SGD_PI_2) && (_lat <= SGD_PI_2);
+#endif
+}
+
/// Output to an ostream
template<typename char_type, typename traits_type>
inline