com.vividsolutions.jts.planargraph
Class DirectedEdgeStar

java.lang.Object
  extended bycom.vividsolutions.jts.planargraph.DirectedEdgeStar

public class DirectedEdgeStar
extends java.lang.Object

A sorted collection of DirectedEdges which leave a Node in a PlanarGraph.

Version:
1.7

Field Summary
protected  java.util.List outEdges
          The underlying list of outgoing DirectedEdges
 
Constructor Summary
DirectedEdgeStar()
          Constructs a DirectedEdgeStar with no edges.
 
Method Summary
 void add(DirectedEdge de)
          Adds a new member to this DirectedEdgeStar.
 Coordinate getCoordinate()
          Returns the coordinate for the node at wich this star is based
 int getDegree()
          Returns the number of edges around the Node associated with this DirectedEdgeStar.
 java.util.List getEdges()
          Returns the DirectedEdges, in ascending order by angle with the positive x-axis.
 int getIndex(DirectedEdge dirEdge)
          Returns the zero-based index of the given DirectedEdge, after sorting in ascending order by angle with the positive x-axis.
 int getIndex(Edge edge)
          Returns the zero-based index of the given Edge, after sorting in ascending order by angle with the positive x-axis.
 int getIndex(int i)
          Returns the remainder when i is divided by the number of edges in this DirectedEdgeStar.
 DirectedEdge getNextEdge(DirectedEdge dirEdge)
          Returns the DirectedEdge on the left-hand side of the given DirectedEdge (which must be a member of this DirectedEdgeStar).
 java.util.Iterator iterator()
          Returns an Iterator over the DirectedEdges, in ascending order by angle with the positive x-axis.
 void remove(DirectedEdge de)
          Drops a member of this DirectedEdgeStar.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

outEdges

protected java.util.List outEdges
The underlying list of outgoing DirectedEdges

Constructor Detail

DirectedEdgeStar

public DirectedEdgeStar()
Constructs a DirectedEdgeStar with no edges.

Method Detail

add

public void add(DirectedEdge de)
Adds a new member to this DirectedEdgeStar.


remove

public void remove(DirectedEdge de)
Drops a member of this DirectedEdgeStar.


iterator

public java.util.Iterator iterator()
Returns an Iterator over the DirectedEdges, in ascending order by angle with the positive x-axis.


getDegree

public int getDegree()
Returns the number of edges around the Node associated with this DirectedEdgeStar.


getCoordinate

public Coordinate getCoordinate()
Returns the coordinate for the node at wich this star is based


getEdges

public java.util.List getEdges()
Returns the DirectedEdges, in ascending order by angle with the positive x-axis.


getIndex

public int getIndex(Edge edge)
Returns the zero-based index of the given Edge, after sorting in ascending order by angle with the positive x-axis.


getIndex

public int getIndex(DirectedEdge dirEdge)
Returns the zero-based index of the given DirectedEdge, after sorting in ascending order by angle with the positive x-axis.


getIndex

public int getIndex(int i)
Returns the remainder when i is divided by the number of edges in this DirectedEdgeStar.


getNextEdge

public DirectedEdge getNextEdge(DirectedEdge dirEdge)
Returns the DirectedEdge on the left-hand side of the given DirectedEdge (which must be a member of this DirectedEdgeStar).