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
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.
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
- computeIM in interface GraphComponent
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
getCollapsedEdge
public Edge getCollapsedEdge()
getCoordinate
public Coordinate getCoordinate(int i)
getCoordinates
public Coordinate[] getCoordinates()
getDepth
public Depth getDepth()
getDepthDelta
public int getDepthDelta()
The depthDelta is the change in depth as an edge is crossed from R to L
- the change in depth as the edge is crossed from R to L
getEnvelope
public Envelope getEnvelope()
getMaximumSegmentIndex
public int getMaximumSegmentIndex()
getNumPoints
public int getNumPoints()
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).
isPointwiseEqual
public boolean isPointwiseEqual(Edge e)
- true if the coordinate sequences of the Edges are identical
print
public void print(PrintStream out)
printReverse
public void printReverse(PrintStream out)
setDepthDelta
public void setDepthDelta(int depthDelta)
setIsolated
public void setIsolated(boolean isIsolated)
setName
public void setName(String name)
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.