dballe::LonRange Struct Reference

Range of longitudes. More...

#include <types.h>

Public Member Functions
	LonRange ()=default
	Construct a range that matches any longitude.
	LonRange (int min, int max)
	Construct a range given integer extremes.
	LonRange (double min, double max)
	Construct a range given extremes in degrees.
bool	operator== (const LonRange &lr) const
bool	operator!= (const LonRange &lr) const
bool	is_missing () const
	Return true if the LonRange matches any longitude.
double	dmin () const
	Get the lower extreme as double, or -180.0 if missing.
double	dmax () const
	Get the upper extreme as double, or 180.0 if missing.
void	get (double &min, double &max) const
	Get the extremes in degrees. More...
void	set (int min, int max)
	Set the extremes as integers.
void	set (double min, double max)
	Set the extremes in degrees.
bool	contains (int lon) const
	Check if a point is inside this range (extremes included)
bool	contains (double lon) const
	Check if a point is inside this range (extremes included)
bool	contains (const LonRange &lr) const
	Check if a range is inside this range (extremes included)

Data Fields
int	imin = MISSING_INT
	Initial point of the longitude range.
int	imax = MISSING_INT
	Final point of the longitude range.

Detailed Description

Range of longitudes.

When given as an integer, a 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 longitude value is intended to be in degrees.

Longitude values are normalized between -180.0 and 180.0. The range is the angle that goes from imin to imax. Both extremes are considered part of the range.

A range that matches any longitude has both imin and imax set to MISSING_INT.

Invariant: if imin == MISSING_INT, then imax == MISSING_INT. An open-ended longitude range makes no sense, since longitudes move alongide a closed circle.

Member Function Documentation

void dballe::LonRange::get	(	double &	min,
		double &	max
	)		const

Get the extremes in degrees.

If is_missing() == true, it returns the values -180.0 and 180.0

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

• types.h