1 package org.opentrafficsim.road.gtu.following;
2
3 import org.opentrafficsim.core.OTS_SCALAR;
4
5 /**
6 * Container for two instances of an AccelerationStep. One for the GTU that is deciding its move (the leader); one for the GTU
7 * that will/would be the (new) follower of that GTU.
8 * <p>
9 * Copyright (c) 2013-2015 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
10 * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
11 * <p>
12 * @version $Revision: 1368 $, $LastChangedDate: 2015-09-02 00:20:20 +0200 (Wed, 02 Sep 2015) $, by $Author: averbraeck $,
13 * initial version 11 mrt. 2015 <br>
14 * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
15 */
16 public class DualAccelerationStep implements OTS_SCALAR
17 {
18 /** AccelerationStep for the leader. */
19 private final AccelerationStep leaderAccelerationStep;
20
21 /** AccelerationStep for the (new) follower. */
22 private final AccelerationStep followerAccelerationStep;
23
24 /**
25 * Create a new DualAccelerationStep.
26 * @param leaderAccelerationStep AccelerationStep; the acceleration and time step size for the leader
27 * @param followerAccelerationStep AccelerationStep; the acceleration and time step size for the (new) follower
28 */
29 public DualAccelerationStep(final AccelerationStep leaderAccelerationStep,
30 final AccelerationStep followerAccelerationStep)
31 {
32 this.leaderAccelerationStep = leaderAccelerationStep;
33 this.followerAccelerationStep = followerAccelerationStep;
34 }
35
36 /**
37 * Retrieve the AccelerationStep for the leader GTU.
38 * @return AccelerationStep; the acceleration and time step size for the leader
39 */
40 public final AccelerationStep getLeaderAccelerationStep()
41 {
42 return this.leaderAccelerationStep;
43 }
44
45 /**
46 * Retrieve the AccelerationStep for the (new) follower GTU.
47 * @return AccelerationStep; the acceleration and time step size for the (new) follower
48 */
49 public final AccelerationStep getFollowerAccelerationStep()
50 {
51 return this.followerAccelerationStep;
52 }
53
54 /**
55 * Return the acceleration of the leader.
56 * @return DoubleScalar<AccelerationUnit>; the acceleration of the leader
57 */
58 public final Acceleration.Abs getLeaderAcceleration()
59 {
60 return getLeaderAccelerationStep().getAcceleration();
61 }
62
63 /**
64 * Return the acceleration of the follower.
65 * @return DoubleScalar<AccelerationUnit>; the acceleration of the follower
66 */
67 public final Acceleration.Abs getFollowerAcceleration()
68 {
69 return getFollowerAccelerationStep().getAcceleration();
70 }
71
72 /**
73 * Return the time up to which the result of the leader is valid.
74 * @return DoubleScalar<TimeUnit>; the time up to which the result of the leader is valid
75 */
76 public final Time.Abs getLeaderValidUntil()
77 {
78 return getLeaderAccelerationStep().getValidUntil();
79 }
80
81 /**
82 * Return the time up to which the result of the follower is valid.
83 * @return DoubleScalar<TimeUnit>; the time up to which the result of the follower is valid
84 */
85 public final Time.Abs getFollowerValidUntil()
86 {
87 return getFollowerAccelerationStep().getValidUntil();
88 }
89
90 /** {@inheritDoc} */
91 public final String toString()
92 {
93 return "Follower: " + getFollowerAccelerationStep() + ", Leader: " + getLeaderAccelerationStep();
94 }
95
96 }