/*
* 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.linemerge;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.WKTReader;
import com.vividsolutions.jts.operation.linemerge.LineMerger;
import java.util.ArrayList;
import java.util.Collection;
/**
* Example of using the LineMerger class to sew together a set of fully noded
* linestrings.
*
* @version 1.7
*/
public class LineMergeExample {
private WKTReader reader = new WKTReader();
public LineMergeExample() {
}
public static void main(String[] args) throws Exception {
LineMergeExample test = new LineMergeExample();
try {
test.run();
} catch (Exception ex) {
ex.printStackTrace();
}
}
void run() throws Exception {
Collection lineStrings = getData();
LineMerger lineMerger = new LineMerger();
lineMerger.add(lineStrings);
Collection mergedLineStrings = lineMerger.getMergedLineStrings();
System.out.println("Lines formed (" + mergedLineStrings.size() + "):");
System.out.println(mergedLineStrings);
}
Collection getData() {
Collection lines = new ArrayList();
lines.add(read("LINESTRING (220 160, 240 150, 270 150, 290 170)"));
lines.add(read("LINESTRING (60 210, 30 190, 30 160)"));
lines.add(read("LINESTRING (70 430, 100 430, 120 420, 140 400)"));
lines.add(read("LINESTRING (160 310, 160 280, 160 250, 170 230)"));
lines.add(read("LINESTRING (170 230, 180 210, 200 180, 220 160)"));
lines.add(read("LINESTRING (30 160, 40 150, 70 150)"));
lines.add(read("LINESTRING (160 310, 200 330, 220 340, 240 360)"));
lines.add(read("LINESTRING (140 400, 150 370, 160 340, 160 310)"));
lines.add(read("LINESTRING (160 310, 130 300, 100 290, 70 270)"));
lines.add(read("LINESTRING (240 360, 260 390, 260 410, 250 430)"));
lines.add(read("LINESTRING (70 150, 100 180, 100 200)"));
lines.add(read("LINESTRING (70 270, 60 260, 50 240, 50 220, 60 210)"));
lines.add(read("LINESTRING (100 200, 90 210, 60 210)"));
return lines;
}
Geometry read(String lineWKT) {
try {
Geometry geom = reader.read(lineWKT);
return geom;
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
}