/*
* Copyright (c) 2016 Vivid Solutions.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
*
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.locationtech.jtsexample.operation.polygonize;
import java.util.ArrayList;
import java.util.Collection;
import org.locationtech.jts.io.WKTReader;
import org.locationtech.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);
}
}