/*
* 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.jtsexample.operation.polygonize;
import java.util.ArrayList;
import java.util.Collection;
import com.vividsolutions.jts.io.WKTReader;
import com.vividsolutions.jts.operation.polygonize.Polygonizer;
/**
* Example of using Polygonizer class to polygonize a set of fully noded linestrings
*
* @version 1.7
*/
public class PolygonizeExample
{
public static void main(String[] args) throws Exception
{
PolygonizeExample test = new PolygonizeExample();
try {
test.run();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public PolygonizeExample() {
}
void run()
throws Exception
{
WKTReader rdr = new WKTReader();
Collection lines = new ArrayList();
lines.add(rdr.read("LINESTRING (0 0 , 10 10)")); // isolated edge
lines.add(rdr.read("LINESTRING (185 221, 100 100)")); //dangling edge
lines.add(rdr.read("LINESTRING (185 221, 88 275, 180 316)"));
lines.add(rdr.read("LINESTRING (185 221, 292 281, 180 316)"));
lines.add(rdr.read("LINESTRING (189 98, 83 187, 185 221)"));
lines.add(rdr.read("LINESTRING (189 98, 325 168, 185 221)"));
Polygonizer polygonizer = new Polygonizer();
polygonizer.add(lines);
Collection polys = polygonizer.getPolygons();
System.out.println("Polygons formed (" + polys.size() + "):");
System.out.println(polys);
}
}