com.vividsolutions.jts.geomgraph.index

Class SegmentIntersector


public class SegmentIntersector
extends java.lang.Object

Version:
1.6

Field Summary

int
numTests

Constructor Summary

SegmentIntersector(LineIntersector li, boolean includeProper, boolean recordIsolated)

Method Summary

void
addIntersections(Edge e0, int segIndex0, Edge e1, int segIndex1)
This method is called by clients of the EdgeIntersector class to test for and add intersections for two segments of the edges being intersected.
Coordinate
getProperIntersectionPoint()
boolean
hasIntersection()
boolean
hasProperInteriorIntersection()
A proper interior intersection is a proper intersection which is not contained in the set of boundary nodes set for this SegmentIntersector.
boolean
hasProperIntersection()
A proper intersection is an intersection which is interior to at least two line segments.
static boolean
isAdjacentSegments(int i1, int i2)
void
setBoundaryNodes(Collection bdyNodes0, Collection bdyNodes1)

Field Details

numTests

public int numTests

Constructor Details

SegmentIntersector

public SegmentIntersector(LineIntersector li,
                          boolean includeProper,
                          boolean recordIsolated)

Method Details

addIntersections

public void addIntersections(Edge e0,
                             int segIndex0,
                             Edge e1,
                             int segIndex1)
This method is called by clients of the EdgeIntersector class to test for and add intersections for two segments of the edges being intersected. Note that clients (such as MonotoneChainEdges) may choose not to intersect certain pairs of segments for efficiency reasons.

getProperIntersectionPoint

public Coordinate getProperIntersectionPoint()
Returns:
the proper intersection point, or null if none was found

hasIntersection

public boolean hasIntersection()

hasProperInteriorIntersection

public boolean hasProperInteriorIntersection()
A proper interior intersection is a proper intersection which is not contained in the set of boundary nodes set for this SegmentIntersector.

hasProperIntersection

public boolean hasProperIntersection()
A proper intersection is an intersection which is interior to at least two line segments. Note that a proper intersection is not necessarily in the interior of the entire Geometry, since another edge may have an endpoint equal to the intersection, which according to SFS semantics can result in the point being on the Boundary of the Geometry.

isAdjacentSegments

public static boolean isAdjacentSegments(int i1,
                                         int i2)

setBoundaryNodes

public void setBoundaryNodes(Collection bdyNodes0,
                             Collection bdyNodes1)