Field Detail

• coord

  protected Coordinate coord

• edges

  protected EdgeEndStar edges

Constructor Detail

• Node

  public Node(Coordinate coord,
              EdgeEndStar edges)

Method Detail

• getCoordinate

  public Coordinate getCoordinate()

  Specified by:

  getCoordinate in class  GraphComponent

  Returns:

  a coordinate in this component (or null, if there are none)

• getEdges

  public EdgeEndStar getEdges()

• isIncidentEdgeInResult

  public boolean isIncidentEdgeInResult()

  Tests whether any incident edge is flagged as being in the result. This test can be used to determine if the node is in the result, since if any incident edge is in the result, the node must be in the result as well.

  Returns:

  true if any indicident edge in the in the result

• isIsolated

  public boolean isIsolated()

  Description copied from class: GraphComponent
  An isolated component is one that does not intersect or touch any other component. This is the case if the label has valid locations for only a single Geometry.

  Specified by:

  isIsolated in class  GraphComponent

  Returns:

  true if this component is isolated

• computeIM

  protected void computeIM(IntersectionMatrix im)

  Basic nodes do not compute IMs

• add

  public void add(EdgeEnd e)

  Add the edge to the list of edges at this node

• mergeLabel

  public void mergeLabel(Node n)

• mergeLabel

  public void mergeLabel(Label label2)

  To merge labels for two nodes, the merged location for each LabelElement is computed. The location for the corresponding node LabelElement is set to the result, as long as the location is non-null.

• setLabel

  public void setLabel(int argIndex,
                       int onLocation)

• setLabelBoundary

  public void setLabelBoundary(int argIndex)

  Updates the label of a node to BOUNDARY, obeying the mod-2 boundaryDetermination rule.

• print

  public void print(PrintStream out)