new LineMergeDirectedEdge(directionPt, edgeDirection)
A com.vividsolutions.jts.planargraph.DirectedEdge of a LineMergeGraph.
||specifies this DirectedEdge's direction (given by an imaginary
line from the
||whether this DirectedEdge's direction is the same as or opposite to that of the parent Edge (if any)|
Returns the directed edge that starts at this directed edge's end point, or null if there are zero or multiple directed edges starting there.
the directed edge