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) 2002-2025 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/dsol/manual/" target="_blank">DSOL Manual</a>. The DSOL
10 * project is distributed under a three-clause BSD-style license, which can be found at
11 * <a href="https://simulation.tudelft.nl/dsol/docs/latest/license.html" target="_blank">DSOL License</a>.
12 * </p>
13 * @author <a href="http://www.peter-jacobs.com/index.htm">Peter Jacobs </a>
14 * @since 1.5
15 */
16 public class Renderable2dComparator implements Comparator<Renderable2dInterface<?>>
17 {
18 /**
19 * constructs a new Renderable2dComparator.
20 */
21 public Renderable2dComparator()
22 {
23 super();
24 }
25
26 @Override
27 public int compare(final Renderable2dInterface<?> r1, final Renderable2dInterface<?> r2)
28 {
29 try
30 {
31 double z1 = r1.getSource().getZ();
32 double z2 = r2.getSource().getZ();
33 if (z1 > z2)
34 {
35 return 1;
36 }
37 if (z1 < z2)
38 {
39 return -1;
40 }
41 }
42 catch (Exception exception)
43 {
44 // ignore as this can happen when the source is in the process of deletion
45 // and therefore it cannot return a proper location.
46 }
47 return Long.compare(r1.getId(), r2.getId());
48 }
49 }