com.vividsolutions.jts.geomgraph.index
Class EdgeSetIntersector

java.lang.Object
  com.vividsolutions.jts.geomgraph.index.EdgeSetIntersector

Direct Known Subclasses:

SimpleEdgeSetIntersector, SimpleMCSweepLineIntersector, SimpleSweepLineIntersector

public abstract class EdgeSetIntersector
extends Object

An EdgeSetIntersector computes all the intersections between the edges in the set. It adds the computed intersections to each edge they are found on. It may be used in two scenarios:

• determining the internal intersections between a single set of edges
• determining the mutual intersections between two different sets of edges

It uses a SegmentIntersector to compute the intersections between segments and to record statistics about what kinds of intersections were found.

Version:

1.7

Constructor Summary

EdgeSetIntersector()

Method Summary

abstract void	computeIntersections(List edges0, List edges1, SegmentIntersector si) Computes all mutual intersections between two sets of edges.
abstract void	computeIntersections(List edges, SegmentIntersector si, boolean testAllSegments) Computes all self-intersections between edges in a set of edges, allowing client to choose whether self-intersections are computed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EdgeSetIntersector

public EdgeSetIntersector()

Method Detail

computeIntersections

public abstract void computeIntersections(List edges,
                                          SegmentIntersector si,
                                          boolean testAllSegments)

Computes all self-intersections between edges in a set of edges, allowing client to choose whether self-intersections are computed.

Parameters:

edges - a list of edges to test for intersections

si - the SegmentIntersector to use

testAllSegments - true if self-intersections are to be tested as well

computeIntersections

public abstract void computeIntersections(List edges0,
                                          List edges1,
                                          SegmentIntersector si)

Computes all mutual intersections between two sets of edges.