nl.tudelft.simulation.dsol.animation.d2.Renderable2dComparator Maven / Gradle / Ivy

Go to download
package nl.tudelft.simulation.dsol.animation.d2;

import java.util.Comparator;

/**
 * A comparator for two Renderable2d objects. 
 * 
 * Copyright (c) 2002-2024 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See
 * for project information  https://simulation.tudelft.nl. The DSOL
 * project is distributed under a three-clause BSD-style license, which can be found at
 * 
 * https://https://simulation.tudelft.nl/dsol/docs/latest/license.html.
 * 
 * @author Peter Jacobs 
 * @since 1.5
 */
public class Renderable2dComparator implements Comparator>
{
    /**
     * constructs a new Renderable2dComparator.
     */
    public Renderable2dComparator()
    {
        super();
    }

    /** {@inheritDoc} */
    @Override
    public int compare(final Renderable2dInterface r1, final Renderable2dInterface r2)
    {
        try
        {
            double z1 = r1.getSource().getZ();
            double z2 = r2.getSource().getZ();
            if (z1 > z2)
            {
                return 1;
            }
            if (z1 < z2)
            {
                return -1;
            }
        }
        catch (Exception exception)
        {
            // ignore as this can happen when the source is in the process of deletion
            // and therefore it cannot return a proper location.
        }
        return Long.compare(r1.getId(), r2.getId());
    }
}