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flightgear/src/Instrumentation/gps.hxx

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// gps.hxx - distance-measuring equipment.
// Written by David Megginson, started 2003.
//
// This file is in the Public Domain and comes with no warranty.
#ifndef __INSTRUMENTS_GPS_HXX
#define __INSTRUMENTS_GPS_HXX 1
#ifndef __cplusplus
# error This library requires C++
#endif
#include <simgear/props/props.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
/**
* Model a GPS radio.
*
* Input properties:
*
* /position/longitude-deg
* /position/latitude-deg
* /position/altitude-ft
* /environment/magnetic-variation-deg
* /systems/electrical/outputs/gps
* /instrumentation/gps/serviceable
*
* /instrumentation/gps/wp-longitude-deg
* /instrumentation/gps/wp-latitude-deg
* /instrumentation/gps/wp-ID
* /instrumentation/gps/wp-name
* /instrumentation/gps/course-deg
* /instrumentation/gps/get-nearest-airport
* /instrumentation/gps/waypoint-type
*
* Output properties:
*
2004-03-23 02:44:24 +00:00
* /instrumentation/gps/indicated-longitude-deg
* /instrumentation/gps/indicated-latitude-deg
* /instrumentation/gps/indicated-altitude-ft
* /instrumentation/gps/indicated-track-true-deg
* /instrumentation/gps/indicated-track-magnetic-deg
* /instrumentation/gps/indicated-ground-speed-kt
*
* /instrumentation/gps/wp-distance-m
* /instrumentation/gps/wp-bearing-deg
* /instrumentation/gps/TTW
* /instrumentation/gps/radials/actual-deg
* /instrumentation/gps/course-deviation-deg
* /instrumentation/gps/course-error-nm
* /instrumentation/gps/to-flag
* /instrumentation/gps/odometer
* /instrumentation/gps/trip-odometer
*/
class GPS : public SGSubsystem
{
public:
GPS ();
virtual ~GPS ();
virtual void init ();
virtual void update (double delta_time_sec);
private:
void search (double frequency, double longitude_rad,
double latitude_rad, double altitude_m);
SGPropertyNode_ptr _longitude_node;
SGPropertyNode_ptr _latitude_node;
SGPropertyNode_ptr _altitude_node;
SGPropertyNode_ptr _magvar_node;
SGPropertyNode_ptr _serviceable_node;
SGPropertyNode_ptr _electrical_node;
SGPropertyNode_ptr _wp_longitude_node;
SGPropertyNode_ptr _wp_latitude_node;
SGPropertyNode_ptr _wp_ID_node;
SGPropertyNode_ptr _wp_name_node;
SGPropertyNode_ptr _wp_course_node;
SGPropertyNode_ptr _get_nearest_airport_node;
SGPropertyNode_ptr _waypoint_type_node;
SGPropertyNode_ptr _raim_node;
SGPropertyNode_ptr _indicated_longitude_node;
SGPropertyNode_ptr _indicated_latitude_node;
SGPropertyNode_ptr _indicated_altitude_node;
SGPropertyNode_ptr _true_track_node;
SGPropertyNode_ptr _magnetic_track_node;
SGPropertyNode_ptr _speed_node;
SGPropertyNode_ptr _wp_distance_node;
SGPropertyNode_ptr _wp_ttw_node;
SGPropertyNode_ptr _wp_bearing_node;
SGPropertyNode_ptr _wp_course_deviation_node;
SGPropertyNode_ptr _wp_course_error_nm_node;
SGPropertyNode_ptr _wp_to_flag_node;
SGPropertyNode_ptr _odometer_node;
SGPropertyNode_ptr _trip_odometer_node;
bool _last_valid;
double _last_longitude_deg;
double _last_latitude_deg;
double _last_altitude_m;
double _last_speed_kts;
double _wp_latitude;
double _wp_longitude;
string _last_wp_ID;
};
#endif // __INSTRUMENTS_GPS_HXX