/*
* 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.modularosm.attraction;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import de.tud.kom.p2psim.api.scenario.ConfigurationException;
import de.tud.kom.p2psim.api.topology.Topology;
import de.tud.kom.p2psim.impl.topology.util.PositionVector;
import de.tudarmstadt.maki.simonstrator.api.Binder;
import de.tudarmstadt.maki.simonstrator.api.Randoms;
import de.tudarmstadt.maki.simonstrator.api.component.sensor.location.AttractionPoint;
import de.tudarmstadt.maki.simonstrator.api.util.XMLConfigurableConstructor;
/**
* Implementation of the interface {@link AttractionGenerator}.
*
* Generates the given number of {@link AttractionPoint}s and sets the
* position randomly within the world dimensions.
*
* @author Christoph Muenker, Julian Zobel
* @version 1.1, 09 2018
*/
public class RandomAttractionGenerator implements IAttractionGenerator {
private Random rand;
private PositionVector worldDimension;
private int numberOfAttractionPoints;
private boolean numberOfAPsSet = false;
private List attractionPoints;
@XMLConfigurableConstructor({"numberOfAttractionPoints"})
public RandomAttractionGenerator(int numberOfAttractionPoints) {
this.rand = Randoms.getRandom(RandomAttractionGenerator.class);
this.worldDimension = Binder.getComponentOrNull(Topology.class)
.getWorldDimensions();
if (numberOfAttractionPoints <= 0) {
throw new ConfigurationException(
"NumberOfAttractionPoints should be at least 1!");
}
this.numberOfAPsSet = true;
this.numberOfAttractionPoints = numberOfAttractionPoints;
this.attractionPoints = new LinkedList();
createAttractionPoints();
}
@Override
public List getAttractionPoints() {
if (!numberOfAPsSet) {
throw new ConfigurationException(
"Number of Attraction Points is not set in RandomAttractionGenerator!");
}
if(attractionPoints.isEmpty())
createAttractionPoints();
return attractionPoints;
}
private void createAttractionPoints() {
List result = new LinkedList();
for (int i = 0; i < numberOfAttractionPoints; i++) {
PositionVector posVec = createPosVec();
AttractionPoint aPoint = new AttractionPointImpl("AP"+i, posVec);
result.add(aPoint);
}
attractionPoints.clear();
attractionPoints.addAll(result);
}
private PositionVector createPosVec() {
double x = rand.nextDouble() * worldDimension.getX();
double y = rand.nextDouble() * worldDimension.getY();
return new PositionVector(x, y);
}
}