com.revolsys.jts.algorithm

Class BoundaryNodeRule.EndPointBoundaryNodeRule

java.lang.Object

com.revolsys.jts.algorithm.BoundaryNodeRule.EndPointBoundaryNodeRule

All Implemented Interfaces:

BoundaryNodeRule

Enclosing interface:

BoundaryNodeRule

public static class BoundaryNodeRule.EndPointBoundaryNodeRule
extends 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.revolsys.jts.algorithm.BoundaryNodeRule

BoundaryNodeRule.EndPointBoundaryNodeRule, BoundaryNodeRule.Mod2BoundaryNodeRule, BoundaryNodeRule.MonoValentEndPointBoundaryNodeRule, BoundaryNodeRule.MultiValentEndPointBoundaryNodeRule

Field Summary

Fields inherited from interface com.revolsys.jts.algorithm.BoundaryNodeRule

ENDPOINT_BOUNDARY_RULE, MOD2_BOUNDARY_RULE, MONOVALENT_ENDPOINT_BOUNDARY_RULE, MULTIVALENT_ENDPOINT_BOUNDARY_RULE, OGC_SFS_BOUNDARY_RULE

Constructor Summary

Constructors

Constructor and Description
BoundaryNodeRule.EndPointBoundaryNodeRule()

Method Summary

Methods

Modifier and Type	Method and Description
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