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rename packages to com.graphhopper.* - #215

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oblonski 2016-02-03 14:31:36 +01:00
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jsprit-examples/src/main/java/jsprit/examples/MultipleDepotExample.java
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/*******************************************************************************
* Copyright (C) 2014 Stefan Schroeder
*
* 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 3.0 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, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package jsprit.examples;
import jsprit.analysis.toolbox.AlgorithmSearchProgressChartListener;
import jsprit.analysis.toolbox.GraphStreamViewer;
import jsprit.analysis.toolbox.Plotter;
import jsprit.analysis.toolbox.StopWatch;
import jsprit.core.algorithm.VehicleRoutingAlgorithm;
import jsprit.core.algorithm.box.Jsprit;
import jsprit.core.algorithm.listener.VehicleRoutingAlgorithmListeners.Priority;
import jsprit.core.problem.Location;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.VehicleRoutingProblem.FleetSize;
import jsprit.core.problem.io.VrpXMLReader;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.reporting.SolutionPrinter;
import jsprit.core.util.Coordinate;
import jsprit.core.util.Solutions;
import jsprit.util.Examples;
import java.util.Arrays;
import java.util.Collection;
public class MultipleDepotExample {
public static void main(String[] args) {
/*
* some preparation - create output folder
*/
Examples.createOutputFolder();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
/*
* Read cordeau-instance p01, BUT only its services without any vehicles
*/
new VrpXMLReader(vrpBuilder).read("input/vrp_cordeau_01.xml");
/*
* add vehicles with its depots
* 4 depots:
* (20,20)
* (30,40)
* (50,30)
* (60,50)
*
* each with 4 vehicles each with a capacity of 80
*/
int nuOfVehicles = 4;
int capacity = 80;
Coordinate firstDepotCoord = Coordinate.newInstance(20, 20);
Coordinate second = Coordinate.newInstance(30, 40);
Coordinate third = Coordinate.newInstance(50, 30);
Coordinate fourth = Coordinate.newInstance(60, 50);
int depotCounter = 1;
for (Coordinate depotCoord : Arrays.asList(firstDepotCoord, second, third, fourth)) {
for (int i = 0; i < nuOfVehicles; i++) {
VehicleTypeImpl vehicleType = VehicleTypeImpl.Builder.newInstance(depotCounter + "_type").addCapacityDimension(0, capacity).setCostPerDistance(1.0).build();
VehicleImpl vehicle = VehicleImpl.Builder.newInstance(depotCounter + "_" + (i + 1) + "_vehicle").setStartLocation(Location.newInstance(depotCoord.getX(), depotCoord.getY())).setType(vehicleType).build();
vrpBuilder.addVehicle(vehicle);
}
depotCounter++;
}
/*
* define problem with finite fleet
*/
vrpBuilder.setFleetSize(FleetSize.FINITE);
/*
* build the problem
*/
VehicleRoutingProblem vrp = vrpBuilder.build();
/*
* plot to see how the problem looks like
*/
// SolutionPlotter.plotVrpAsPNG(vrp, "output/problem01.png", "p01");
/*
* solve the problem
*/
VehicleRoutingAlgorithm vra = Jsprit.Builder.newInstance(vrp).setProperty(Jsprit.Parameter.THREADS, "5").buildAlgorithm();
vra.getAlgorithmListeners().addListener(new StopWatch(), Priority.HIGH);
vra.getAlgorithmListeners().addListener(new AlgorithmSearchProgressChartListener("output/progress.png"));
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
SolutionPrinter.print(Solutions.bestOf(solutions));
new Plotter(vrp, Solutions.bestOf(solutions)).plot("output/p01_solution.png", "p01");
new GraphStreamViewer(vrp, Solutions.bestOf(solutions)).setRenderDelay(100).display();
}
}