com.vividsolutions.jts.algorithm
Class BoundaryNodeRule.EndPointBoundaryNodeRule
java.lang.Object
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 LinearRing
s 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
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 |
BoundaryNodeRule.EndPointBoundaryNodeRule
public BoundaryNodeRule.EndPointBoundaryNodeRule()
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