org.locationtech.jtsexample.technique

Class PreparedGeometryIndex

java.lang.Object

org.locationtech.jtsexample.technique.PreparedGeometryIndex

class PreparedGeometryIndex
extends java.lang.Object

A spatial index which indexes PreparedGeometrys created from a set of Geometrys. This can be used for efficient testing for intersection with a series of target geomtries.

Field Summary

Fields

Modifier and Type	Field and Description
private SpatialIndex	index

Constructor Summary

Constructors

Constructor and Description
PreparedGeometryIndex() Creates a new index

Method Summary

Modifier and Type	Method and Description
void	insert(java.util.Collection geoms) Inserts a collection of Geometrys into the index.
java.util.List	intersects(Geometry g) Finds all PreparedGeometrys which intersect a given Geometry
java.util.List	query(Geometry g) Finds all PreparedGeometrys which might interact with a query Geometry.

Methods inherited from class java.lang.Object

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

Field Detail

index

private SpatialIndex index

Constructor Detail

PreparedGeometryIndex

public PreparedGeometryIndex()

Creates a new index

Method Detail

insert

public void insert(java.util.Collection geoms)

Inserts a collection of Geometrys into the index.

Parameters:

geoms - a collection of Geometrys to insert

query

public java.util.List query(Geometry g)

Finds all PreparedGeometrys which might interact with a query Geometry.

Parameters:

g - the geometry to query by

Returns:

a list of candidate PreparedGeometrys

intersects

public java.util.List intersects(Geometry g)

Finds all PreparedGeometrys which intersect a given Geometry

Parameters:

g - the geometry to query by

Returns:

a list of intersecting PreparedGeometrys