1 package nl.tudelft.simulation.dsol.animation.d2;
2
3 import java.util.Comparator;
4
5 /**
6 * A comparator for two Renderable2d objects.
7 * <p>
8 * Copyright (c) 2002-2024 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See
9 * for project information <a href="https://simulation.tudelft.nl/" target="_blank"> https://simulation.tudelft.nl</a>. The DSOL
10 * project is distributed under a three-clause BSD-style license, which can be found at
11 * <a href="https://https://simulation.tudelft.nl/dsol/docs/latest/license.html" target="_blank">
12 * https://https://simulation.tudelft.nl/dsol/docs/latest/license.html</a>.
13 * </p>
14 * @author <a href="http://www.peter-jacobs.com/index.htm">Peter Jacobs </a>
15 * @since 1.5
16 */
17 public class Renderable2dComparator implements Comparator<Renderable2dInterface<?>>
18 {
19 /**
20 * constructs a new Renderable2dComparator.
21 */
22 public Renderable2dComparator()
23 {
24 super();
25 }
26
27 /** {@inheritDoc} */
28 @Override
29 public int compare(final Renderable2dInterface<?> r1, final Renderable2dInterface<?> r2)
30 {
31 try
32 {
33 double z1 = r1.getSource().getZ();
34 double z2 = r2.getSource().getZ();
35 if (z1 > z2)
36 {
37 return 1;
38 }
39 if (z1 < z2)
40 {
41 return -1;
42 }
43 }
44 catch (Exception exception)
45 {
46 // ignore as this can happen when the source is in the process of deletion
47 // and therefore it cannot return a proper location.
48 }
49 return Long.compare(r1.getId(), r2.getId());
50 }
51 }