1 package org.opentrafficsim.core.network.lane;
2
3 import org.opentrafficsim.core.gtu.RelativePosition;
4 import org.opentrafficsim.core.gtu.lane.LaneBasedGTU;
5 import org.opentrafficsim.core.unit.LengthUnit;
6 import org.opentrafficsim.core.value.vdouble.scalar.DoubleScalar;
7
8 /**
9 * This is a sensor that is placed at the end of a Lane to unregister a GTU from the lane, and unregister the lane from
10 * the GTU when the back of the vehicle passes over the sensor.
11 * <p>
12 * Copyright (c) 2013-2014 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights
13 * reserved. <br>
14 * BSD-style license. See <a href="http://opentrafficsim.org/node/13">OpenTrafficSim License</a>.
15 * <p>
16 * @version Jan 1, 2015 <br>
17 * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
18 * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
19 */
20 public class SensorLaneEnd extends AbstractSensor
21 {
22 /** */
23 private static final long serialVersionUID = 20141231L;
24
25 /**
26 * Place a sensor that is triggered with the back of the GTU one ulp (see <code>Math.ulp(double d)</code>) before
27 * the end of the lane to make sure it will always be triggered, independent of the algorithm used to move the GTU.
28 * @param lane The lane for which this is a sensor.
29 */
30 public SensorLaneEnd(final Lane lane)
31 {
32 super(lane, new DoubleScalar.Rel<LengthUnit>(lane.getLength().getSI() - Math.ulp(lane.getLength().getSI()),
33 LengthUnit.METER), RelativePosition.REAR);
34 }
35
36 /**
37 * {@inheritDoc} <br>
38 * For this method, we assume that the right sensor triggered this method. In this case the sensor that indicates
39 * the front of the GTU. The code triggering the sensor therefore has to do the checking for sensor type.
40 */
41 @Override
42 public final void trigger(final LaneBasedGTU<?> gtu)
43 {
44 gtu.removeLane(getLane());
45 getLane().removeGTU(gtu);
46 }
47
48 /** {@inheritDoc} */
49 @Override
50 @SuppressWarnings("checkstyle:designforextension")
51 public String toString()
52 {
53 return "SensorLaneEnd [getLane()=" + this.getLane() + ", getLongitudinalPosition()="
54 + this.getLongitudinalPosition() + ", getPositionType()=" + this.getPositionType() + "]";
55 }
56
57 }