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gc.h
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gc.h
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/*
* This file is part of fra-airtraffic screensaver,
* https://github.com/flederwiesel/fra-airtraffic
* Copyright © 2017 Tobias Kühne
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GC_H
#define GC_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <wx/math.h>
#define deg(d) ((d) * 360.0 / 2.0 / M_PI)
#define rad(d) ((d) * 2.0 * M_PI / 360.0)
#define EARTH_RADIUS 6371.000785 /* [km] as of GRS-80 */
typedef struct
{
double lat; /*[deg]*/
double lon; /*[deg]*/
} gps_t;
double /*[rad]*/ GCDistance(double lat1 /*[deg]*/, double lon1 /*[deg]*/,
double lat2 /*[deg]*/, double lon2 /*[deg]*/);
double /*[rad]*/ GCBearing(double lat1 /*[deg]*/, double lon1 /*[deg]*/,
double lat2 /*[deg]*/, double lon2 /*[deg]*/);
gps_t GCTravel(double lat1 /*[deg]*/, double lon1 /*[deg]*/,
double distance /*[rad]*/, double bearing /*[rad]*/);
#ifdef __cplusplus
} // extern "C"
#endif
#endif /* GC_H */