Package org.locationtech.jts.geomgraph

Class EdgeRing

java.lang.Object

org.locationtech.jts.geomgraph.EdgeRing

Direct Known Subclasses:

MaximalEdgeRing, MinimalEdgeRing

public abstract class EdgeRing
extends java.lang.Object

Version:

1.7

Constructor Summary

Constructors

Constructor	Description
EdgeRing(DirectedEdge start, GeometryFactory geometryFactory)

Method Summary

Modifier and Type	Method	Description
void	addHole(EdgeRing ring)
void	computeRing()	Compute a LinearRing from the point list previously collected.
boolean	containsPoint(Coordinate p)	This method will cause the ring to be computed.
Coordinate	getCoordinate(int i)
java.util.List	getEdges()	Returns the list of DirectedEdges that make up this EdgeRing
Label	getLabel()
LinearRing	getLinearRing()
int	getMaxNodeDegree()
abstract DirectedEdge	getNext(DirectedEdge de)
EdgeRing	getShell()
boolean	isHole()
boolean	isIsolated()
boolean	isShell()
abstract void	setEdgeRing(DirectedEdge de, EdgeRing er)
void	setInResult()
void	setShell(EdgeRing shell)
Polygon	toPolygon(GeometryFactory geometryFactory)

Methods inherited from class java.lang.Object

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

Constructor Detail

EdgeRing

public EdgeRing(DirectedEdge start,
                GeometryFactory geometryFactory)

Method Detail

isIsolated

public boolean isIsolated()

isHole

public boolean isHole()

getCoordinate

public Coordinate getCoordinate(int i)

getLinearRing

public LinearRing getLinearRing()

getLabel

public Label getLabel()

isShell

public boolean isShell()

getShell

public EdgeRing getShell()

setShell

public void setShell(EdgeRing shell)

addHole

public void addHole(EdgeRing ring)

toPolygon

public Polygon toPolygon(GeometryFactory geometryFactory)

computeRing

public void computeRing()

Compute a LinearRing from the point list previously collected. Test if the ring is a hole (i.e. if it is CCW) and set the hole flag accordingly.

getNext

public abstract DirectedEdge getNext(DirectedEdge de)

setEdgeRing

public abstract void setEdgeRing(DirectedEdge de,
                                 EdgeRing er)

getEdges

public java.util.List getEdges()

Returns the list of DirectedEdges that make up this EdgeRing

Returns:

List of DirectedEdges

getMaxNodeDegree

public int getMaxNodeDegree()

setInResult

public void setInResult()

containsPoint

public boolean containsPoint(Coordinate p)

This method will cause the ring to be computed. It will also check any holes, if they have been assigned.

Parameters:

p - point

Returns:

true of ring contains point