Class PointLocator

java.lang.Object

org.locationtech.jts.algorithm.PointLocator

public class PointLocator
extends Object

Computes the topological (Location) of a single point to a Geometry. A BoundaryNodeRule may be specified to control the evaluation of whether the point lies on the boundary or not The default rule is to use the the SFS Boundary Determination Rule

Notes:

• LinearRings do not enclose any area - points inside the ring are still in the EXTERIOR of the ring.

Instances of this class are not reentrant.

Version:

1.7

Constructor Summary

Constructors

Constructor	Description
PointLocator()
PointLocator(BoundaryNodeRule boundaryRule)

Method Summary

Modifier and Type	Method	Description
boolean	intersects(Coordinate p, Geometry geom)	Convenience method to test a point for intersection with a Geometry
int	locate(Coordinate p, Geometry geom)	Computes the topological relationship (Location) of a single point to a Geometry.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PointLocator

public PointLocator()

PointLocator

public PointLocator(BoundaryNodeRule boundaryRule)

Method Details

intersects

public boolean intersects(Coordinate p,
 Geometry geom)

Convenience method to test a point for intersection with a Geometry

Parameters:

p - the coordinate to test

geom - the Geometry to test

Returns:

true if the point is in the interior or boundary of the Geometry

locate

public int locate(Coordinate p,
 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 SFS Boundary Determination Rule.

Returns:

the Location of the point relative to the input Geometry