//
// Linux GPS
//

/* prevent multiple inclusions */
#ifndef __GpsMath__
#define __GpsMath__

/* includes *****************************************************************/

#include <math.h>
#include <stdint.h>
#include "netlib.h"

/* defines ******************************************************************/

// degrees <-> radians
#define     DEG2RAD(X)      ((X)*M_PI/180.0)
#define     RAD2DEG(X)      ((X)*180.0/M_PI)

// (nautical mile to km) to meters per degree
#define     MPERDEG         (111.13285*1000.0)
#define     EARTHRADIUS     6378100.0       // meters

// speed conversions
#define     KNOTS_KPH           1.85200
#define     KNOTS_METERSPERSEC  (KNOTS_KPH*1000.0/3600.0)

#define     KPH2MSEC(X)     ((X)*0.277777778)
#define     MSEC2KPH(X)     ((X)/0.277777778)

/* macros *******************************************************************/

/* structs & typedefs *******************************************************/

/* c class definitions ******************************************************/

//
// GpsLinux because it depennds on GPSd, the HAMLIB and NMEAP libraries
//
class GpsMath {
    // public data
public:

    // parser

    // protected data
protected:

    // private data
private:
    // static data

    // private methods

    // public methods
public:
    // constructors
    GpsMath();

    // destructor
    virtual ~GpsMath();

    // virtual functions

    // public methods

    // static methods
static double Minutes2Degrees(char *value, char *side = NULL);
static void Degrees2Minutes(double deg, char *buf, int max, bool lat);
static timespec String2Time(const char *hhmmss, const char *ddmmyy);

static double Bearing( double lat1, double lon1, double lat2, double lon2 );
static double Distance( double lat1, double lon1, double lat2, double lon2 );
static double DistanceX( double lat1, double lon1, double lat2, double lon2 );
static double DistanceY( double lat1, double lon1, double lat2, double lon2 );
static double DistanceXY(double lat1, double lon1, double lat2, double lon2, double &x, double &y );
static double Travel( double *lat, double *lon, double *ele, double x, double y, double z);
};

#endif