/*
* 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.linemerge;
import java.util.ArrayList;
import java.util.Collection;
import org.locationtech.jts.geom.Geometry;
import org.locationtech.jts.io.WKTReader;
import org.locationtech.jts.operation.linemerge.LineMerger;
/**
* 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;
}
}