JTS Topology Suite version 1.12

com.vividsolutions.jts.algorithm
Class BoundaryNodeRule.EndPointBoundaryNodeRule

java.lang.Object
  extended by com.vividsolutions.jts.algorithm.BoundaryNodeRule.EndPointBoundaryNodeRule
All Implemented Interfaces:
BoundaryNodeRule
Enclosing interface:
BoundaryNodeRule

public static class BoundaryNodeRule.EndPointBoundaryNodeRule
extends java.lang.Object
implements BoundaryNodeRule

A BoundaryNodeRule which specifies that any points which are endpoints of lineal components are in the boundary of the parent geometry. This corresponds to the "intuitive" topological definition of boundary. Under this rule LinearRings have a non-empty boundary (the common endpoint of the underlying LineString).

This rule is useful when dealing with linear networks. For example, it can be used to check whether linear networks are correctly noded. The usual network topology constraint is that linear segments may touch only at endpoints. In the case of a segment touching a closed segment (ring) at one point, the Mod2 rule cannot distinguish between the permitted case of touching at the node point and the invalid case of touching at some other interior (non-node) point. The EndPoint rule does distinguish between these cases, so is more appropriate for use.

Version:
1.7
Author:
Martin Davis

Nested Class Summary
 
Nested classes/interfaces inherited from interface com.vividsolutions.jts.algorithm.BoundaryNodeRule
BoundaryNodeRule.EndPointBoundaryNodeRule, BoundaryNodeRule.Mod2BoundaryNodeRule, BoundaryNodeRule.MonoValentEndPointBoundaryNodeRule, BoundaryNodeRule.MultiValentEndPointBoundaryNodeRule
 
Field Summary
 
Fields inherited from interface com.vividsolutions.jts.algorithm.BoundaryNodeRule
ENDPOINT_BOUNDARY_RULE, MOD2_BOUNDARY_RULE, MONOVALENT_ENDPOINT_BOUNDARY_RULE, MULTIVALENT_ENDPOINT_BOUNDARY_RULE, OGC_SFS_BOUNDARY_RULE
 
Constructor Summary
BoundaryNodeRule.EndPointBoundaryNodeRule()
           
 
Method Summary
 boolean isInBoundary(int boundaryCount)
          Tests whether a point that lies in boundaryCount geometry component boundaries is considered to form part of the boundary of the parent geometry.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

BoundaryNodeRule.EndPointBoundaryNodeRule

public BoundaryNodeRule.EndPointBoundaryNodeRule()
Method Detail

isInBoundary

public boolean isInBoundary(int boundaryCount)
Description copied from interface: BoundaryNodeRule
Tests whether a point that lies in boundaryCount geometry component boundaries is considered to form part of the boundary of the parent geometry.

Specified by:
isInBoundary in interface BoundaryNodeRule
Parameters:
boundaryCount - the number of component boundaries that this point occurs in
Returns:
true if points in this number of boundaries lie in the parent boundary

JTS Topology Suite version 1.12