Package org.locationtech.jts.operation.union

Class SpatialPartition

java.lang.Object

org.locationtech.jts.operation.union.SpatialPartition

public class SpatialPartition
extends java.lang.Object

Computes a partition of a set of geometries into disjoint subsets, based on a provided equivalence SpatialPartition.EquivalenceRelation. Uses a spatial index for efficient processing.

Author:

mdavis

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	SpatialPartition.EquivalenceRelation	An interface for a function to compute an equivalence relation.

Constructor Summary

Constructors

Constructor	Description
SpatialPartition(Geometry[] geoms, SpatialPartition.EquivalenceRelation rel)

Method Summary

Modifier and Type	Method	Description
int	getCount()	Gets the number of partitions
Geometry	getGeometry(int s, int i)	Gets a geometry in a given partition
int	getItem(int s, int i)	Gets the index of a geometry in a partition
int	getSize(int s)	Gets the number of geometries in a given partition.

Methods inherited from class java.lang.Object

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

Constructor Detail

SpatialPartition

public SpatialPartition(Geometry[] geoms,
                        SpatialPartition.EquivalenceRelation rel)

Method Detail

getCount

public int getCount()

Gets the number of partitions

Returns:

the number of partitions

getSize

public int getSize(int s)

Gets the number of geometries in a given partition.

Parameters:

s - the partition index

Returns:

the size of the partition

getItem

public int getItem(int s,
                   int i)

Gets the index of a geometry in a partition

Parameters:

s - the partition index

i - the item index

Returns:

the item in the partition

getGeometry

public Geometry getGeometry(int s,
                            int i)

Gets a geometry in a given partition

Parameters:

s - the partition index

i - the item index

Returns:

the geometry for the given partition and item index