Package org.locationtech.jts.operation

Class BoundaryOp

java.lang.Object

org.locationtech.jts.operation.BoundaryOp

public class BoundaryOp
extends Object

Computes the boundary of a Geometry. Allows specifying the BoundaryNodeRule to be used. This operation will always return a Geometry of the appropriate dimension for the boundary (even if the input geometry is empty). The boundary of zero-dimensional geometries (Points) is always the empty GeometryCollection.

Version:

1.7

Field Summary

Fields

Modifier and Type	Field	Description
private BoundaryNodeRule	bnRule
private Map	endpointMap
private Geometry	geom
private GeometryFactory	geomFact

Constructor Summary

Constructors

Constructor	Description
BoundaryOp(Geometry geom)
BoundaryOp(Geometry geom, BoundaryNodeRule bnRule)

Method Summary

Modifier and Type	Method	Description
private void	addEndpoint(Coordinate pt)
private Geometry	boundaryLineString(LineString line)
private Geometry	boundaryMultiLineString(MultiLineString mLine)
private Coordinate[]	computeBoundaryCoordinates(MultiLineString mLine)
Geometry	getBoundary()
static Geometry	getBoundary(Geometry g)
static Geometry	getBoundary(Geometry g, BoundaryNodeRule bnRule)
private MultiPoint	getEmptyMultiPoint()

Methods inherited from class java.lang.Object

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

Field Details

geom

private Geometry geom

geomFact

private GeometryFactory geomFact

bnRule

private BoundaryNodeRule bnRule

endpointMap

private Map endpointMap

Constructor Details

BoundaryOp

public BoundaryOp(Geometry geom)

BoundaryOp

public BoundaryOp(Geometry geom,
 BoundaryNodeRule bnRule)

Method Details

getBoundary

public static Geometry getBoundary(Geometry g)

getBoundary

public static Geometry getBoundary(Geometry g,
 BoundaryNodeRule bnRule)

getBoundary

public Geometry getBoundary()

getEmptyMultiPoint

private MultiPoint getEmptyMultiPoint()

boundaryMultiLineString

private Geometry boundaryMultiLineString(MultiLineString mLine)

computeBoundaryCoordinates

private Coordinate[] computeBoundaryCoordinates(MultiLineString mLine)

addEndpoint

private void addEndpoint(Coordinate pt)

boundaryLineString

private Geometry boundaryLineString(LineString line)