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1   package org.opentrafficsim.road.network.sampling.data;
2   
3   import org.djunits.unit.SpeedUnit;
4   import org.djunits.value.vfloat.scalar.FloatSpeed;
5   import org.opentrafficsim.core.gtu.GTUException;
6   import org.opentrafficsim.core.network.NetworkException;
7   import org.opentrafficsim.kpi.sampling.data.ExtendedDataTypeSpeed;
8   import org.opentrafficsim.road.gtu.lane.LaneBasedGTU;
9   import org.opentrafficsim.road.network.sampling.GtuData;
10  
11  /**
12   * Reference speed for trajectories.
13   * <p>
14   * Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
15   * BSD-style license. See <a href="http://opentrafficsim.org/node/13">OpenTrafficSim License</a>.
16   * <p>
17   * @version $Revision$, $LastChangedDate$, by $Author$, initial version 21 nov. 2016 <br>
18   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
19   * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
20   * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
21   */
22  public class ReferenceSpeed extends ExtendedDataTypeSpeed<GtuData>
23  {
24  
25      /** Single instance. */
26      public static final ReferenceSpeedsampling/data/ReferenceSpeed.html#ReferenceSpeed">ReferenceSpeed INSTANCE = new ReferenceSpeed();
27  
28      /**
29       * 
30       */
31      public ReferenceSpeed()
32      {
33          super("referenceSpeed");
34      }
35  
36      /** {@inheritDoc} */
37      @Override
38      public final FloatSpeed getValue(final GtuData gtu)
39      {
40          LaneBasedGTU gtuObj = gtu.getGtu();
41          try
42          {
43              double v1 = gtuObj.getReferencePosition().getLane().getSpeedLimit(gtuObj.getGTUType()).si;
44              double v2 = gtuObj.getMaximumSpeed().si;
45              return new FloatSpeed(v1 < v2 ? v1 : v2, SpeedUnit.SI);
46          }
47          catch (GTUException exception)
48          {
49              // GTU was destroyed and is without a reference location
50              return new FloatSpeed(Double.NaN, SpeedUnit.SI);
51          }
52          catch (NetworkException exception)
53          {
54              throw new RuntimeException("Could not obtain reference speed from GTU " + gtuObj, exception);
55          }
56      }
57  
58      /** {@inheritDoc} */
59      @Override
60      public final String toString()
61      {
62          return "Reference Speed";
63      }
64  
65  }