Field Detail

• outEdges

  protected 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 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 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 value of i modulo the number of edges in this DirectedEdgeStar (i.e. the remainder when i is divided by the number of edges)

  Parameters:

  i - an integer (positive, negative or zero)

• getNextEdge

  public DirectedEdge getNextEdge(DirectedEdge dirEdge)

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

• getNextCWEdge

  public DirectedEdge getNextCWEdge(DirectedEdge dirEdge)

  Returns the DirectedEdge on the right-hand (CW) side of the given DirectedEdge (which must be a member of this DirectedEdgeStar).