Constructor Detail

• Edge

  public Edge(Coordinate[] pts,
              Label label)

• Edge

  public Edge(Coordinate[] pts)

Method Detail

• updateIM

  public static void updateIM(Label label,
                              IntersectionMatrix im)

  Updates an IM from the label for an edge. Handles edges from both L and A geometries.

• getNumPoints

  public int getNumPoints()

• setName

  public void setName(String name)

• getCoordinates

  public Coordinate[] getCoordinates()

• getCoordinate

  public Coordinate getCoordinate(int i)

• getCoordinate

  public Coordinate getCoordinate()

  Specified by:

  getCoordinate in class  GraphComponent

  Returns:

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

• getEnvelope

  public Envelope getEnvelope()

• getDepth

  public Depth getDepth()

• getDepthDelta

  public int getDepthDelta()

  The depthDelta is the change in depth as an edge is crossed from R to L

  Returns:

  the change in depth as the edge is crossed from R to L

• setDepthDelta

  public void setDepthDelta(int depthDelta)

• getMaximumSegmentIndex

  public int getMaximumSegmentIndex()

• getEdgeIntersectionList

  public EdgeIntersectionList getEdgeIntersectionList()

• getMonotoneChainEdge

  public MonotoneChainEdge getMonotoneChainEdge()

• isClosed

  public boolean isClosed()

• isCollapsed

  public boolean isCollapsed()

  An Edge is collapsed if it is an Area edge and it consists of two segments which are equal and opposite (eg a zero-width V).

• getCollapsedEdge

  public Edge getCollapsedEdge()

• setIsolated

  public void setIsolated(boolean isIsolated)

• 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

• addIntersections

  public void addIntersections(LineIntersector li,
                               int segmentIndex,
                               int geomIndex)

  Adds EdgeIntersections for one or both intersections found for a segment of an edge to the edge intersection list.

• addIntersection

  public void addIntersection(LineIntersector li,
                              int segmentIndex,
                              int geomIndex,
                              int intIndex)

  Add an EdgeIntersection for intersection intIndex. An intersection that falls exactly on a vertex of the edge is normalized to use the higher of the two possible segmentIndexes

• computeIM

  public void computeIM(IntersectionMatrix im)

  Update the IM with the contribution for this component. A component only contributes if it has a labelling for both parent geometries

• equals

  public boolean equals(Object o)

  equals is defined to be:

  e1 equals e2 iff the coordinates of e1 are the same or the reverse of the coordinates in e2

• isPointwiseEqual

  public boolean isPointwiseEqual(Edge e)

  Returns:

  true if the coordinate sequences of the Edges are identical

• toString

  public String toString()

• print

  public void print(PrintStream out)

• printReverse

  public void printReverse(PrintStream out)