barsuift.simLife.tree.TreeLeafComparator Maven / Gradle / Ivy

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Core module of the simLife project, containing main logic code

There is a newer version: 0.0.5

/**
 * barsuift-simlife is a life simulator programm
 * 
 * Copyright (C) 2010 Cyrille GACHOT
 * 
 * This file is part of barsuift-simlife.
 * 
 * barsuift-simlife 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 (at your option) any later
 * version.
 * 
 * barsuift-simlife 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 barsuift-simlife. If not, see
 * .
 */
package barsuift.simLife.tree;

import java.util.Comparator;

import barsuift.simLife.j3d.util.DistanceHelper;


public class TreeLeafComparator implements Comparator {

    /**
     * Returns the difference of distance of the 2 arguments from the origin.
     * 
     * 

     * If o1 is closer to the origin than o2, it returns a negative value
     * If o1 is at the same distance from the origin as o2, it returns 0
     * If o1 is more far than o2 from the origin point, it returns a positive value
     * 
     * 
     */
    @Override
    public int compare(TreeLeaf o1, TreeLeaf o2) {
        // distances are computed in millimeters for more precision
        double distance1 = DistanceHelper.distanceFromOrigin(o1.getTreeLeaf3D().getAttachPoint()) * 1000;
        double distance2 = DistanceHelper.distanceFromOrigin(o2.getTreeLeaf3D().getAttachPoint()) * 1000;
        return (int) (distance1 - distance2);
    }

}