dballe::Coords Struct Reference

Coordinates. More...

#include <types.h>

Public Member Functions
	Coords ()
	Construct a missing Coords.
	Coords (int lat, int lon)
	Construct a coords from integers in 1/100000 of a degree.
	Coords (double lat, double lon)
	Construct a coords from values in degrees.
bool	is_missing () const
	Check if these coordinates are undefined.
void	set (int lat, int lon)
	Set from integers in 1/100000 of a degree.
void	set (double lat, double lon)
	Set from values in degrees.
double	dlat () const
	Get the latitude in degrees.
double	dlon () const
	Get the longitude in degrees.
int	compare (const Coords &o) const
	Compare two Coords strutures, for use in sorting. More...
bool	operator== (const Coords &dt) const
bool	operator!= (const Coords &dt) const
bool	operator< (const Coords &dt) const
bool	operator> (const Coords &dt) const
bool	operator<= (const Coords &dt) const
bool	operator>= (const Coords &dt) const
void	print (FILE *out, const char *end="\n") const
	Print to an output stream.

Data Fields
int	lat
	Latitude in 1/100000 of a degree (5 significant digits preserved)
int	lon
	Longitude in 1/100000 of a degree (5 significant digits preserved) and normalised between -180.0 and 180.0.

Detailed Description

Coordinates.

When given as an integer, a latitude/longitude value is intended in 1/100000 of a degree, which is the maximum resolution supported by DB-All.e.

When given as a double a latitude/longitude value is intended to be in degrees.

Longitude values are normalized between -180.0 and 180.0.

Member Function Documentation

int dballe::Coords::compare

(

const Coords &

o

)

const

Compare two Coords strutures, for use in sorting.

Sorting happens by latitude first, then by longitude. It is implemented mainly for the purpose of being able to use Coords as a key in a sorted container.

Returns

-1 if *this < o, 0 if *this == o, 1 if *this > o

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The documentation for this struct was generated from the following file:

• types.h