gmath.h File Reference

#include "info.h"

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Macros
#define	NMEA_PI   (3.141592653589793)
	PI value.
#define	NMEA_PI180   (NMEA_PI / 180)
	PI division by 180.
#define	NMEA_EARTHRADIUS_KM   (6378)
	Earth's mean radius in km.
#define	NMEA_EARTHRADIUS_M   (NMEA_EARTHRADIUS_KM * 1000)
	Earth's mean radius in m.
#define	NMEA_EARTH_SEMIMAJORAXIS_M   (6378137.0)
	Earth's semi-major axis in m according WGS84.
#define	NMEA_EARTH_SEMIMAJORAXIS_KM   (NMEA_EARTHMAJORAXIS_KM / 1000)
	Earth's semi-major axis in km according WGS 84.
#define	NMEA_EARTH_FLATTENING   (1 / 298.257223563)
	Earth's flattening according WGS 84.
#define	NMEA_DOP_FACTOR   (5)
	Factor for translating DOP to meters.

Functions
double	nmea_degree2radian (double val)
double	nmea_radian2degree (double val)
double	nmea_ndeg2degree (double val)
double	nmea_degree2ndeg (double val)
double	nmea_ndeg2radian (double val)
double	nmea_radian2ndeg (double val)
double	nmea_calc_pdop (double hdop, double vdop)
double	nmea_dop2meters (double dop)
double	nmea_meters2dop (double meters)
void	nmea_info2pos (const nmeaINFO *info, nmeaPOS *pos)
void	nmea_pos2info (const nmeaPOS *pos, nmeaINFO *info)
double	nmea_distance (const nmeaPOS *from_pos, const nmeaPOS *to_pos)
double	nmea_distance_ellipsoid (const nmeaPOS *from_pos, const nmeaPOS *to_pos, double *from_azimuth, double *to_azimuth)
int	nmea_move_horz (const nmeaPOS *start_pos, nmeaPOS *end_pos, double azimuth, double distance)
int	nmea_move_horz_ellipsoid (const nmeaPOS *start_pos, nmeaPOS *end_pos, double azimuth, double distance, double *end_azimuth)

Macro Definition Documentation

#define NMEA_DOP_FACTOR   (5)

Factor for translating DOP to meters.

Definition at line 39 of file gmath.h.

#define NMEA_EARTH_FLATTENING   (1 / 298.257223563)

Earth's flattening according WGS 84.

Definition at line 38 of file gmath.h.

#define NMEA_EARTH_SEMIMAJORAXIS_KM   (NMEA_EARTHMAJORAXIS_KM / 1000)

Earth's semi-major axis in km according WGS 84.

Definition at line 37 of file gmath.h.

#define NMEA_EARTH_SEMIMAJORAXIS_M   (6378137.0)

Earth's semi-major axis in m according WGS84.

Definition at line 36 of file gmath.h.

#define NMEA_EARTHRADIUS_KM   (6378)

Earth's mean radius in km.

Definition at line 34 of file gmath.h.

#define NMEA_EARTHRADIUS_M   (NMEA_EARTHRADIUS_KM * 1000)

Earth's mean radius in m.

Definition at line 35 of file gmath.h.

#define NMEA_PI   (3.141592653589793)

PI value.

Definition at line 32 of file gmath.h.

#define NMEA_PI180   (NMEA_PI / 180)

PI division by 180.

Definition at line 33 of file gmath.h.

Function Documentation

double nmea_calc_pdop	(	double	hdop,
		double	vdop
	)

double nmea_degree2ndeg

(

double

val

)

double nmea_degree2radian

(

double

val

)

double nmea_distance	(	const nmeaPOS *	from_pos,
		const nmeaPOS *	to_pos
	)

double nmea_distance_ellipsoid	(	const nmeaPOS *	from_pos,
		const nmeaPOS *	to_pos,
		double *	from_azimuth,
		double *	to_azimuth
	)

double nmea_dop2meters

(

double

dop

)

void nmea_info2pos	(	const nmeaINFO *	info,
		nmeaPOS *	pos
	)

double nmea_meters2dop

(

double

meters

)

int nmea_move_horz	(	const nmeaPOS *	start_pos,
		nmeaPOS *	end_pos,
		double	azimuth,
		double	distance
	)

int nmea_move_horz_ellipsoid	(	const nmeaPOS *	start_pos,
		nmeaPOS *	end_pos,
		double	azimuth,
		double	distance,
		double *	end_azimuth
	)

double nmea_ndeg2degree

(

double

val

)

Referenced by QgsNMEAConnection::processGGASentence(), and QgsNMEAConnection::processRMCSentence().

double nmea_ndeg2radian

(

double

val

)

void nmea_pos2info	(	const nmeaPOS *	pos,
		nmeaINFO *	info
	)

double nmea_radian2degree

(

double

val

)

double nmea_radian2ndeg

(

double

val

)