dballe::Coords Struct Reference

Coordinates. More...

#include <types.h>

Public Member Functions
	Coords ()=default
	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_lat (double lat)
	Set the latitude only.
void	set_lon (double lon)
	Set the longitude only.
void	set_lat (int lat)
	Set the latitude only, in 1/100000 of a degree.
void	set_lon (int lon)
	Set the longitude only, in 1/100000 of a degree.
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 &o) const
bool	operator!= (const Coords &o) const
bool	operator< (const Coords &o) const
bool	operator> (const Coords &o) const
bool	operator<= (const Coords &o) const
bool	operator>= (const Coords &o) const
int	print (FILE *out, const char *end="\n") const
	Print to an output stream.
std::string	to_string (const char *undef="-") const
	Format to a string.

Static Public Member Functions
static int	lat_to_int (double lat)
	Convert a latitude to the internal integer representation.
static int	lon_to_int (double lat)
	Convert a longitude to the internal integer representation.
static double	lat_from_int (int lat)
	Convert a latitude from the internal integer representation.
static double	lon_from_int (int lon)
	Convert a longitude from the internal integer representation.

Public Attributes
int	lat = MISSING_INT
	Latitude in 1/100000 of a degree (5 significant digits preserved)
int	lon = MISSING_INT
	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

compare()

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