com.vividsolutions.jts.geom.prep

Class PreparedPolygonContains

java.lang.Object

com.vividsolutions.jts.geom.prep.PreparedPolygonPredicate

com.vividsolutions.jts.geom.prep.AbstractPreparedPolygonContains

com.vividsolutions.jts.geom.prep.PreparedPolygonContains

public class PreparedPolygonContains
extends AbstractPreparedPolygonContains

Computes the contains spatial relationship predicate for a PreparedPolygon relative to all other Geometry classes. Uses short-circuit tests and indexing to improve performance.

It is not possible to short-circuit in all cases, in particular in the case where the test geometry touches the polygon linework. In this case full topology must be computed.

Author:

Martin Davis

Field Summary

Fields inherited from class com.vividsolutions.jts.geom.prep.AbstractPreparedPolygonContains

requireSomePointInInterior

Fields inherited from class com.vividsolutions.jts.geom.prep.PreparedPolygonPredicate

prepPoly

Constructor Summary

Constructors

Constructor and Description
PreparedPolygonContains(PreparedPolygon prepPoly) Creates an instance of this operation.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(Geometry geom) Tests whether this PreparedPolygon contains a given geometry.
static boolean	contains(PreparedPolygon prep, Geometry geom) Computes the contains predicate between a PreparedPolygon and a Geometry.
protected boolean	fullTopologicalPredicate(Geometry geom) Computes the full topological contains predicate.

Methods inherited from class com.vividsolutions.jts.geom.prep.AbstractPreparedPolygonContains

eval

Methods inherited from class com.vividsolutions.jts.geom.prep.PreparedPolygonPredicate

isAllTestComponentsInTarget, isAllTestComponentsInTargetInterior, isAnyTargetComponentInAreaTest, isAnyTestComponentInTarget, isAnyTestComponentInTargetInterior

Methods inherited from class java.lang.Object

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

Constructor Detail

PreparedPolygonContains

public PreparedPolygonContains(PreparedPolygon prepPoly)

Creates an instance of this operation.

Parameters:

prepPoly - the PreparedPolygon to evaluate

Method Detail

contains

public static boolean contains(PreparedPolygon prep,
               Geometry geom)

Computes the contains predicate between a PreparedPolygon and a Geometry.

Parameters:

prep - the prepared polygon

geom - a test geometry

Returns:

true if the polygon contains the geometry

contains

public boolean contains(Geometry geom)

Tests whether this PreparedPolygon contains a given geometry.

Parameters:

geom - the test geometry

Returns:

true if the test geometry is contained

fullTopologicalPredicate

protected boolean fullTopologicalPredicate(Geometry geom)

Computes the full topological contains predicate. Used when short-circuit tests are not conclusive.

Specified by:

fullTopologicalPredicate in class AbstractPreparedPolygonContains

Parameters:

geom - the test geometry

Returns:

true if this prepared polygon contains the test geometry