GEOS  3.4.2
Public Member Functions | List of all members
geos::algorithm::PointLocator Class Reference

Computes the topological relationship (Location) of a single point to a Geometry. More...

#include <geos/geosAlgorithm.h>

Public Member Functions

int locate (const geom::Coordinate &p, const geom::Geometry *geom)
 
bool intersects (const geom::Coordinate &p, const geom::Geometry *geom)
 

Detailed Description

Computes the topological relationship (Location) of a single point to a Geometry.

The algorithm obeys the SFS boundaryDetermination rule to correctly determine whether the point lies on the boundary or not.

Notes:

Last port: algorithm/PointLocator.java rev. 1.26 (JTS-1.7+)

Member Function Documentation

bool geos::algorithm::PointLocator::intersects ( const geom::Coordinate p,
const geom::Geometry geom 
)
inline

Convenience method to test a point for intersection with a Geometry

Parameters
pthe coordinate to test
geomthe Geometry to test
Returns
true if the point is in the interior or boundary of the Geometry

References geos::geom::Location::EXTERIOR.

int geos::algorithm::PointLocator::locate ( const geom::Coordinate p,
const geom::Geometry geom 
)

Computes the topological relationship (Location) of a single point to a Geometry. It handles both single-element and multi-element Geometries. The algorithm for multi-part Geometries takes into account the boundaryDetermination rule.

Returns
the Location of the point relative to the input Geometry

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