Package org.locationtech.jts.operation.polygonize

Class PolygonizeDirectedEdge

java.lang.Object

org.locationtech.jts.planargraph.GraphComponent

org.locationtech.jts.planargraph.DirectedEdge

org.locationtech.jts.operation.polygonize.PolygonizeDirectedEdge

All Implemented Interfaces:

Comparable

class PolygonizeDirectedEdge
extends DirectedEdge

A DirectedEdge of a PolygonizeGraph, which represents an edge of a polygon formed by the graph. May be logically deleted from the graph by setting the marked flag.

Version:

1.7

Field Summary

Fields

Modifier and Type	Field	Description
private EdgeRing	edgeRing
private long	label
private PolygonizeDirectedEdge	next

Fields inherited from class org.locationtech.jts.planargraph.DirectedEdge

angle, edgeDirection, from, p0, p1, parentEdge, quadrant, sym, to

Fields inherited from class org.locationtech.jts.planargraph.GraphComponent

isMarked, isVisited

Constructor Summary

Constructors

Constructor	Description
PolygonizeDirectedEdge(Node from, Node to, Coordinate directionPt, boolean edgeDirection)	Constructs a directed edge connecting the from node to the to node.

Method Summary

Modifier and Type	Method	Description
long	getLabel()	Returns the identifier attached to this directed edge.
PolygonizeDirectedEdge	getNext()	Returns the next directed edge in the EdgeRing that this directed edge is a member of.
EdgeRing	getRing()	Gets the EdgeRing this edge is a member of.
boolean	isInRing()	Returns the ring of directed edges that this directed edge is a member of, or null if the ring has not been set.
void	setLabel(long label)	Attaches an identifier to this directed edge.
void	setNext(PolygonizeDirectedEdge next)	Sets the next directed edge in the EdgeRing that this directed edge is a member of.
void	setRing(EdgeRing edgeRing)	Sets the ring of directed edges that this directed edge is a member of.

Methods inherited from class org.locationtech.jts.planargraph.DirectedEdge

compareDirection, compareTo, getAngle, getCoordinate, getDirectionPt, getEdge, getEdgeDirection, getFromNode, getQuadrant, getSym, getToNode, isRemoved, print, setEdge, setSym, toEdges

Methods inherited from class org.locationtech.jts.planargraph.GraphComponent

getComponentWithVisitedState, getContext, getData, isMarked, isVisited, setContext, setData, setMarked, setMarked, setVisited, setVisited

Methods inherited from class java.lang.Object

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

Field Details

edgeRing

private EdgeRing edgeRing

next

private PolygonizeDirectedEdge next

label

private long label

Constructor Details

PolygonizeDirectedEdge

public PolygonizeDirectedEdge(Node from,
 Node to,
 Coordinate directionPt,
 boolean edgeDirection)

Constructs a directed edge connecting the from node to the to node.

Parameters:

directionPt - specifies this DirectedEdge's direction (given by an imaginary line from the from node to directionPt)

edgeDirection - whether this DirectedEdge's direction is the same as or opposite to that of the parent Edge (if any)

Method Details

getLabel

public long getLabel()

Returns the identifier attached to this directed edge.

setLabel

public void setLabel(long label)

Attaches an identifier to this directed edge.

getNext

public PolygonizeDirectedEdge getNext()

Returns the next directed edge in the EdgeRing that this directed edge is a member of.

setNext

public void setNext(PolygonizeDirectedEdge next)

Sets the next directed edge in the EdgeRing that this directed edge is a member of.

isInRing

public boolean isInRing()

Returns the ring of directed edges that this directed edge is a member of, or null if the ring has not been set.

See Also:

• setRing(EdgeRing)

setRing

public void setRing(EdgeRing edgeRing)

Sets the ring of directed edges that this directed edge is a member of.

getRing

public EdgeRing getRing()

Gets the EdgeRing this edge is a member of.

Returns:

an edge ring