repicea.simulation.allometrycalculator.HeightComparator Maven / Gradle / Ivy
/*
* This file is part of the repicea library.
*
* Copyright (C) 2009-2015 Mathieu Fortin for Rouge-Epicea
*
* 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 of the License, or (at your option) any later version.
*
* This library is distributed with 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.
*
* Please see the license at http://www.gnu.org/copyleft/lesser.html.
*/
package repicea.simulation.allometrycalculator;
import java.util.Comparator;
import repicea.simulation.covariateproviders.treelevel.HeightMProvider;
/**
* The DbhComparator class implements the Comparator interface for HeightMProvider instances.
* @author Mathieu Fortin - June 2015
*/
public class HeightComparator implements Comparator {
private final boolean ascending;
/**
* General constructor.
* @param ascending true for ascending sorting or false for descending sorting
*/
public HeightComparator(boolean ascending) {
this.ascending = ascending;
}
/**
* Default constructor for ascending comparison.
*/
public HeightComparator() {
this(true);
}
@Override
public int compare(HeightMProvider arg0, HeightMProvider arg1) {
if (ascending) {
if (arg0.getHeightM() < arg1.getHeightM()) {
return -1;
} else if (arg0.getHeightM() == arg1.getHeightM()) {
return 0;
} else {
return 1;
}
} else {
if (arg0.getHeightM() < arg1.getHeightM()) {
return 1;
} else if (arg0.getHeightM() == arg1.getHeightM()) {
return 0;
} else {
return -1;
}
}
}
}