NetworkFalsifier.java

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/* *********************************************************************** *
 * project: org.matsim.*
 * NetworkFalsifier.java
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 * copyright       : (C) 2007 by the members listed in the COPYING,        *
 *                   LICENSE and WARRANTY file.                            *
 * email           : info at matsim dot org                                *
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *   See also COPYING, LICENSE and WARRANTY file                           *
 *                                                                         *
 * *********************************************************************** */

package org.matsim.core.network.algorithms;

import org.matsim.api.core.v01.Coord;
import org.matsim.api.core.v01.network.Link;
import org.matsim.api.core.v01.network.Network;
import org.matsim.api.core.v01.network.Node;
import org.matsim.core.api.internal.NetworkRunnable;
import org.matsim.core.gbl.MatsimRandom;
import org.matsim.core.utils.geometry.CoordUtils;

public final class NetworkFalsifier implements NetworkRunnable {

    private final double distance;

    public NetworkFalsifier(double distance) {
        this.distance = distance;
    }

    @Override
    public void run(Network network) {
        double maxDistance = this.distance * 2.0;
        for (Node node : network.getNodes().values()) {
            Coord coord = node.getCoord();
            node.setCoord( new Coord(coord.getX() + (MatsimRandom.getRandom().nextDouble() - 0.5) *  maxDistance,
                    coord.getY() + (MatsimRandom.getRandom().nextDouble() - 0.5) * maxDistance) ) ;
        }

        for (Link link : network.getLinks().values()) {
            Coord fromCoord = link.getFromNode().getCoord();
            Coord toCoord = link.getToNode().getCoord();
            link.setLength(CoordUtils.calcEuclideanDistance(fromCoord, toCoord));
        }
    }

}