geos::geom::Coordinate Class Reference

Coordinate is the lightweight class used to store coordinates. More...

#include <geos.h>

Public Types
typedef std::set< const Coordinate *, CoordinateLessThen >	ConstSet
	A set of const Coordinate pointers.
typedef std::vector< const Coordinate * >	ConstVect
	A vector of const Coordinate pointers.
typedef std::stack< const Coordinate * >	ConstStack
	A stack of const Coordinate pointers.
typedef std::vector< Coordinate >	Vect
	A vector of Coordinate objects (real object, not pointers)

Public Member Functions
	Coordinate (double xNew, double yNew, double zNew=DoubleNotANumber)
void	setNull ()
bool	isNull () const
bool	isValid () const
bool	equals2D (const Coordinate &other) const
bool	equals2D (const Coordinate &other, double tolerance) const
bool	equals (const Coordinate &other) const
	2D only
int	compareTo (const Coordinate &other) const
	TODO: deprecate this, move logic to CoordinateLessThen instead.
bool	equals3D (const Coordinate &other) const
	3D comparison
std::string	toString () const
	Returns a string of the form (x,y,z) .
double	distance (const Coordinate &p) const
double	distanceSquared (const Coordinate &p) const

Static Public Member Functions
static Coordinate &	getNull ()

Public Attributes
double	x
	x-coordinate
double	y
	y-coordinate
double	z
	z-coordinate

Friends
std::ostream &	operator<< (std::ostream &os, const Coordinate &c)
	Output function.
bool	operator== (const Coordinate &a, const Coordinate &b)
	Equality operator for Coordinate. 2D only.
bool	operator!= (const Coordinate &a, const Coordinate &b)
	Inequality operator for Coordinate. 2D only.

Detailed Description

Coordinate is the lightweight class used to store coordinates.

It is distinct from Point, which is a subclass of Geometry. Unlike objects of type Point (which contain additional information such as an envelope, a precision model, and spatial reference system information), a Coordinate only contains ordinate values and accessor methods.

Coordinate objects are two-dimensional points, with an additional z-ordinate. JTS does not support any operations on the z-ordinate except the basic accessor functions.

Constructed coordinates will have a z-ordinate of DoubleNotANumber. The standard comparison functions will ignore the z-ordinate.

Member Function Documentation

distance()

double geos::geom::Coordinate::distance ( const Coordinate &  p ) const

inline

TODO: obsoleted this, can use PrecisionModel::makePrecise(Coordinate*) instead

References x, and y.

Referenced by geos::geom::LineSegment::getLength().

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

• Coordinate.h