com.vividsolutions.jts.geom.prep

Class PreparedPolygon

java.lang.Object

com.vividsolutions.jts.geom.prep.PreparedPolygon

All Implemented Interfaces:

PreparedGeometry

public class PreparedPolygon
extends Object

A prepared version for Polygonal geometries. This class supports both Polygons and MultiPolygons.

This class does not support MultiPolygons which are non-valid (e.g. with overlapping elements).

Instances of this class are thread-safe and immutable.

Author:

mbdavis

Constructor Summary

Constructors

Constructor and Description
PreparedPolygon(Polygonal poly)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(Geometry g) Default implementation.
boolean	containsProperly(Geometry g) Default implementation.
boolean	coveredBy(Geometry g) Default implementation.
boolean	covers(Geometry g) Default implementation.
boolean	crosses(Geometry g) Default implementation.
boolean	disjoint(Geometry g) Standard implementation for all geometries.
protected boolean	envelopeCovers(Geometry g) Determines whether the envelope of this geometry covers the Geometry g.
protected boolean	envelopesIntersect(Geometry g) Determines whether a Geometry g interacts with this geometry by testing the geometry envelopes.
Geometry	getGeometry() Gets the original Geometry which has been prepared.
FastSegmentSetIntersectionFinder	getIntersectionFinder() Gets the indexed intersection finder for this geometry.
PointOnGeometryLocator	getPointLocator()
List	getRepresentativePoints() Gets the list of representative points for this geometry.
boolean	intersects(Geometry g) Default implementation.
boolean	isAnyTargetComponentInTest(Geometry testGeom) Tests whether any representative of the target geometry intersects the test geometry.
boolean	overlaps(Geometry g) Default implementation.
String	toString()
boolean	touches(Geometry g) Default implementation.
boolean	within(Geometry g) Default implementation.

Methods inherited from class java.lang.Object

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

Constructor Detail

PreparedPolygon

public PreparedPolygon(Polygonal poly)

Method Detail

getIntersectionFinder

public FastSegmentSetIntersectionFinder getIntersectionFinder()

Gets the indexed intersection finder for this geometry.

Returns:

the intersection finder

getPointLocator

public PointOnGeometryLocator getPointLocator()

intersects

public boolean intersects(Geometry g)

Default implementation.

Specified by:

intersects in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry intersects the given Geometry

See Also:

Geometry.intersects(Geometry)

contains

public boolean contains(Geometry g)

Default implementation.

Specified by:

contains in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry contains the given Geometry

See Also:

Geometry.contains(Geometry)

containsProperly

public boolean containsProperly(Geometry g)

Default implementation.

Specified by:

containsProperly in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry properly contains the given Geometry

See Also:

Geometry.contains(com.vividsolutions.jts.geom.Geometry)

covers

public boolean covers(Geometry g)

Default implementation.

Specified by:

covers in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry covers the given Geometry

See Also:

Geometry.covers(Geometry)

getGeometry

public Geometry getGeometry()

Description copied from interface: PreparedGeometry

Gets the original Geometry which has been prepared.

Specified by:

getGeometry in interface PreparedGeometry

Returns:

the base geometry

getRepresentativePoints

public List getRepresentativePoints()

Gets the list of representative points for this geometry. One vertex is included for every component of the geometry (i.e. including one for every ring of polygonal geometries). Do not modify the returned list!

Returns:

a List of Coordinate

isAnyTargetComponentInTest

public boolean isAnyTargetComponentInTest(Geometry testGeom)

Tests whether any representative of the target geometry intersects the test geometry. This is useful in A/A, A/L, A/P, L/P, and P/P cases.

Parameters:

geom - the test geometry

repPts - the representative points of the target geometry

Returns:

true if any component intersects the areal test geometry

envelopesIntersect

protected boolean envelopesIntersect(Geometry g)

Determines whether a Geometry g interacts with this geometry by testing the geometry envelopes.

Parameters:

g - a Geometry

Returns:

true if the envelopes intersect

envelopeCovers

protected boolean envelopeCovers(Geometry g)

Determines whether the envelope of this geometry covers the Geometry g.

Parameters:

g - a Geometry

Returns:

true if g is contained in this envelope

coveredBy

public boolean coveredBy(Geometry g)

Default implementation.

Specified by:

coveredBy in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry is covered by the given Geometry

See Also:

Geometry.coveredBy(Geometry)

crosses

public boolean crosses(Geometry g)

Default implementation.

Specified by:

crosses in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry crosses the given Geometry

See Also:

Geometry.crosses(Geometry)

disjoint

public boolean disjoint(Geometry g)

Standard implementation for all geometries. Supports GeometryCollections as input.

Specified by:

disjoint in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry is disjoint from the given Geometry

See Also:

Geometry.disjoint(Geometry)

overlaps

public boolean overlaps(Geometry g)

Default implementation.

Specified by:

overlaps in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry overlaps the given Geometry

See Also:

Geometry.overlaps(Geometry)

touches

public boolean touches(Geometry g)

Default implementation.

Specified by:

touches in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry touches the given Geometry

See Also:

Geometry.touches(Geometry)

within

public boolean within(Geometry g)

Default implementation.

Specified by:

within in interface PreparedGeometry

Parameters:

g - the Geometry to test

Returns:

true if this Geometry is within the given Geometry

See Also:

Geometry.within(Geometry)

toString

public String toString()

Overrides:

toString in class Object