/*
* Copyright (c) 2005-2010 KOM – Multimedia Communications Lab
*
* This file is part of PeerfactSim.KOM.
*
* PeerfactSim.KOM 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 3 of the License, or
* any later version.
*
* PeerfactSim.KOM 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PeerfactSim.KOM. If not, see .
*
*/
package de.tud.kom.p2psim.impl.topology.movement.modular.attraction;
import java.util.List;
import java.util.Random;
import java.util.Vector;
import de.tud.kom.p2psim.api.scenario.ConfigurationException;
import de.tud.kom.p2psim.api.topology.Topology;
import de.tud.kom.p2psim.impl.topology.PositionVector;
import de.tudarmstadt.maki.simonstrator.api.Binder;
import de.tudarmstadt.maki.simonstrator.api.Randoms;
/**
* Implementation of the interface {@link AttractionGenerator}.
*
* It generates the given number of {@link AttractionPoint}s and sets the
* Position randomly.
*
* @author Christoph Muenker
* @version 1.0, 02.07.2013
*/
public class RandomAttractionGenerator implements AttractionGenerator {
private Random rand;
private PositionVector worldDimension;
private int numberOfAttractionPoints;
private boolean numberOfAPsSet = false;
private double minSpeed = 2;
private double maxSpeed = 2;
public RandomAttractionGenerator() {
this.rand = Randoms.getRandom(RandomAttractionGenerator.class);
this.worldDimension = Binder.getComponentOrNull(Topology.class)
.getWorldDimensions();
}
@Override
public List getAttractionPoints() {
if (!numberOfAPsSet) {
throw new ConfigurationException(
"Number of Attraction Points is not set in RandomAttractionGenerator!");
}
List result = new Vector();
for (int i = 0; i < numberOfAttractionPoints; i++) {
PositionVector posVec = createPosVec();
AttractionPoint aPoint = new AttractionPoint(posVec, minSpeed,
maxSpeed);
result.add(aPoint);
}
return result;
}
private PositionVector createPosVec() {
double x = rand.nextDouble() * worldDimension.getX();
double y = rand.nextDouble() * worldDimension.getY();
return new PositionVector(x, y);
}
@Override
public void setNumberOfAttractionPoints(int numberOfAttractionPoints) {
if (numberOfAttractionPoints <= 0) {
throw new ConfigurationException(
"NumberOfAttractionPoints should be at least 1!");
}
this.numberOfAPsSet = true;
this.numberOfAttractionPoints = numberOfAttractionPoints;
}
}