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add EuclideanCosts

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oblonski 2015-02-26 19:32:21 +01:00
parent 67b67b8c45
commit 1d999c4a28
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jsprit-core/src/main/java/jsprit/core/util/EuclideanCosts.java Normal file
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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.core.util;
import jsprit.core.problem.Location;
import jsprit.core.problem.cost.AbstractForwardVehicleRoutingTransportCosts;
import jsprit.core.problem.cost.TransportDistance;
import jsprit.core.problem.driver.Driver;
import jsprit.core.problem.vehicle.Vehicle;
/**
* @author stefan schroeder
*
*/
public class EuclideanCosts extends AbstractForwardVehicleRoutingTransportCosts implements TransportDistance{
public int speed = 1;
public double detourFactor = 1.0;
@Override
public String toString() {
return "[name=crowFlyCosts]";
}
@Override
public double getTransportCost(Location from, Location to, double time, Driver driver, Vehicle vehicle) {
double distance;
try {
distance = calculateDistance(from, to);
} catch (NullPointerException e) {
throw new NullPointerException("cannot calculate euclidean distance. coordinates are missing. either add coordinates or use another transport-cost-calculator.");
}
double costs = distance;
if(vehicle != null){
if(vehicle.getType() != null){
costs = distance * vehicle.getType().getVehicleCostParams().perDistanceUnit;
}
}
return costs;
}
private double calculateDistance(Location fromLocation, Location toLocation) {
Coordinate from = null;
Coordinate to = null;
if(fromLocation.getCoordinate() != null & toLocation.getCoordinate() != null){
from = fromLocation.getCoordinate();
to = toLocation.getCoordinate();
}
if(from == null || to == null) throw new NullPointerException();
return calculateDistance(from,to);
}
private double calculateDistance(Coordinate from, Coordinate to) {
return EuclideanDistanceCalculator.calculateDistance(from,to) * detourFactor;
}
@Override
public double getTransportTime(Location from, Location to, double time, Driver driver, Vehicle vehicle) {
double distance;
try {
distance = calculateDistance(from, to);
} catch (NullPointerException e) {
throw new NullPointerException("cannot calculate euclidean distance. coordinates are missing. either add coordinates or use another transport-cost-calculator.");
}
return distance / speed;
}
@Override
public double getDistance(Location from, Location to) {
return calculateDistance(from,to);
}
}