/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.vividsolutions.jts.noding;
import java.util.*;
/**
* Base class for {@link Noder}s which make a single
* pass to find intersections.
* This allows using a custom {@link SegmentIntersector}
* (which for instance may simply identify intersections, rather than
* insert them).
*
* @version 1.7
*/
public abstract class SinglePassNoder
implements Noder
{
protected SegmentIntersector segInt;
public SinglePassNoder() {
}
public SinglePassNoder(SegmentIntersector segInt) {
setSegmentIntersector(segInt);
}
/**
* Sets the SegmentIntersector to use with this noder.
* A SegmentIntersector will normally add intersection nodes
* to the input segment strings, but it may not - it may
* simply record the presence of intersections.
* However, some Noders may require that intersections be added.
*
* @param segInt
*/
public void setSegmentIntersector(SegmentIntersector segInt)
{
this.segInt = segInt;
}
/**
* Computes the noding for a collection of {@link SegmentString}s.
* Some Noders may add all these nodes to the input SegmentStrings;
* others may only add some or none at all.
*
* @param segStrings a collection of {@link SegmentString}s to node
*/
public abstract void computeNodes(Collection segStrings);
/**
* Returns a {@link Collection} of fully noded {@link SegmentString}s.
* The SegmentStrings have the same context as their parent.
*
* @return a Collection of SegmentStrings
*/
public abstract Collection getNodedSubstrings();
}