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1   package org.opentrafficsim.demo.carFollowing;
2   
3   import static org.opentrafficsim.core.gtu.GTUType.CAR;
4   
5   import java.awt.Container;
6   import java.awt.Frame;
7   import java.io.IOException;
8   import java.net.URL;
9   import java.rmi.RemoteException;
10  import java.util.ArrayList;
11  import java.util.Arrays;
12  import java.util.LinkedHashSet;
13  import java.util.List;
14  import java.util.Random;
15  import java.util.Set;
16  
17  import javax.naming.NamingException;
18  import javax.swing.JComponent;
19  import javax.swing.JPanel;
20  import javax.swing.JScrollPane;
21  import javax.swing.SwingUtilities;
22  
23  import org.djunits.unit.TimeUnit;
24  import org.djunits.unit.UNITS;
25  import org.djunits.value.vdouble.scalar.Acceleration;
26  import org.djunits.value.vdouble.scalar.Duration;
27  import org.djunits.value.vdouble.scalar.Length;
28  import org.djunits.value.vdouble.scalar.Speed;
29  import org.djunits.value.vdouble.scalar.Time;
30  import org.opentrafficsim.base.modelproperties.BooleanProperty;
31  import org.opentrafficsim.base.modelproperties.CompoundProperty;
32  import org.opentrafficsim.base.modelproperties.ProbabilityDistributionProperty;
33  import org.opentrafficsim.base.modelproperties.Property;
34  import org.opentrafficsim.base.modelproperties.PropertyException;
35  import org.opentrafficsim.base.modelproperties.SelectionProperty;
36  import org.opentrafficsim.base.parameters.Parameters;
37  import org.opentrafficsim.core.dsol.OTSModelInterface;
38  import org.opentrafficsim.core.geometry.OTSGeometryException;
39  import org.opentrafficsim.core.geometry.OTSLine3D;
40  import org.opentrafficsim.core.geometry.OTSPoint3D;
41  import org.opentrafficsim.core.gtu.GTUDirectionality;
42  import org.opentrafficsim.core.gtu.GTUException;
43  import org.opentrafficsim.core.gtu.GTUType;
44  import org.opentrafficsim.core.network.LongitudinalDirectionality;
45  import org.opentrafficsim.core.network.NetworkException;
46  import org.opentrafficsim.core.network.OTSNetwork;
47  import org.opentrafficsim.core.network.OTSNode;
48  import org.opentrafficsim.demo.carFollowing.Straight.StraightModel;
49  import org.opentrafficsim.graphs.AccelerationContourPlot;
50  import org.opentrafficsim.graphs.ContourPlot;
51  import org.opentrafficsim.graphs.DensityContourPlot;
52  import org.opentrafficsim.graphs.FlowContourPlot;
53  import org.opentrafficsim.graphs.LaneBasedGTUSampler;
54  import org.opentrafficsim.graphs.SpeedContourPlot;
55  import org.opentrafficsim.graphs.TrajectoryPlot;
56  import org.opentrafficsim.road.animation.AnimationToggles;
57  import org.opentrafficsim.road.gtu.animation.DefaultCarAnimation;
58  import org.opentrafficsim.road.gtu.lane.LaneBasedIndividualGTU;
59  import org.opentrafficsim.road.gtu.lane.tactical.LaneBasedGTUFollowingTacticalPlanner;
60  import org.opentrafficsim.road.gtu.lane.tactical.following.GTUFollowingModelOld;
61  import org.opentrafficsim.road.gtu.lane.tactical.following.IDMOld;
62  import org.opentrafficsim.road.gtu.lane.tactical.following.IDMPlusOld;
63  import org.opentrafficsim.road.gtu.strategical.LaneBasedStrategicalPlanner;
64  import org.opentrafficsim.road.gtu.strategical.route.LaneBasedStrategicalRoutePlanner;
65  import org.opentrafficsim.road.modelproperties.IDMPropertySet;
66  import org.opentrafficsim.road.network.factory.LaneFactory;
67  import org.opentrafficsim.road.network.lane.CrossSectionLink;
68  import org.opentrafficsim.road.network.lane.DirectedLanePosition;
69  import org.opentrafficsim.road.network.lane.Lane;
70  import org.opentrafficsim.road.network.lane.LaneType;
71  import org.opentrafficsim.road.network.lane.object.sensor.SinkSensor;
72  import org.opentrafficsim.simulationengine.AbstractWrappableAnimation;
73  import org.opentrafficsim.simulationengine.OTSSimulationException;
74  import org.opentrafficsim.simulationengine.SimpleSimulatorInterface;
75  
76  import nl.tudelft.simulation.dsol.SimRuntimeException;
77  import nl.tudelft.simulation.dsol.gui.swing.HTMLPanel;
78  import nl.tudelft.simulation.dsol.gui.swing.TablePanel;
79  import nl.tudelft.simulation.dsol.simtime.SimTimeDoubleUnit;
80  import nl.tudelft.simulation.dsol.simulators.DEVSSimulatorInterface;
81  import nl.tudelft.simulation.dsol.simulators.SimulatorInterface;
82  
83  /**
84   * Single lane road consisting of three consecutive links.<br>
85   * Tests that GTUs correctly transfer themselves onto the next lane and that the graph samplers handle this situation.
86   * <p>
87   * Copyright (c) 2013-2018 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
88   * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
89   * <p>
90   * $LastChangedDate: 2018-09-19 13:55:45 +0200 (Wed, 19 Sep 2018) $, @version $Revision: 4006 $, by $Author: averbraeck $,
91   * initial version 30 jan. 2015 <br>
92   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
93   * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
94   */
95  public class SequentialLanes extends AbstractWrappableAnimation implements UNITS
96  {
97      /** */
98      private static final long serialVersionUID = 1L;
99  
100     /** The model. */
101     private SequentialModel model;
102 
103     /**
104      * Create a SequentialLanes simulation.
105      * @throws PropertyException when the provided properties could not be handled
106      */
107     public SequentialLanes() throws PropertyException
108     {
109         List<Property<?>> outputProperties = new ArrayList<>();
110         outputProperties.add(new BooleanProperty("DensityPlot", "Density", "Density contour plot", true, false, 0));
111         outputProperties.add(new BooleanProperty("FlowPlot", "Flow", "Flow contour plot", true, false, 1));
112         outputProperties.add(new BooleanProperty("SpeedPlot", "Speed", "Speed contour plot", true, false, 2));
113         outputProperties
114                 .add(new BooleanProperty("AccelerationPlot", "Acceleration", "Acceleration contour plot", true, false, 3));
115         outputProperties.add(
116                 new BooleanProperty("TrajectoryPlot", "Trajectories", "Trajectory (time/distance) diagram", true, false, 4));
117         this.properties.add(new CompoundProperty("OutputGraphs", "Output graphs", "Select the graphical output",
118                 outputProperties, true, 1000));
119     }
120 
121     /** {@inheritDoc} */
122     @Override
123     public final void stopTimersThreads()
124     {
125         super.stopTimersThreads();
126         this.model = null;
127     }
128 
129     /**
130      * Main program.
131      * @param args String[]; the command line arguments (not used)
132      * @throws SimRuntimeException when simulation cannot be created with given parameters
133      */
134     public static void main(final String[] args) throws SimRuntimeException
135     {
136         SwingUtilities.invokeLater(new Runnable()
137         {
138             @SuppressWarnings("synthetic-access")
139             @Override
140             public void run()
141             {
142                 try
143                 {
144                     SequentialLanes sequential = new SequentialLanes();
145                     List<Property<?>> localProperties = sequential.getProperties();
146                     try
147                     {
148                         localProperties.add(new ProbabilityDistributionProperty("TrafficComposition", "Traffic composition",
149                                 "<html>Mix of passenger cars and trucks</html>", new String[] { "passenger car", "truck" },
150                                 new Double[] { 0.8, 0.2 }, false, 10));
151                     }
152                     catch (PropertyException exception)
153                     {
154                         exception.printStackTrace();
155                     }
156                     localProperties.add(new SelectionProperty("CarFollowingModel", "Car following model",
157                             "<html>The car following model determines "
158                                     + "the acceleration that a vehicle will make taking into account "
159                                     + "nearby vehicles, infrastructural restrictions (e.g. speed limit, "
160                                     + "curvature of the road) capabilities of the vehicle and personality "
161                                     + "of the driver.</html>",
162                             new String[] { "IDM", "IDM+" }, 1, false, 1));
163                     localProperties.add(IDMPropertySet.makeIDMPropertySet("IDMCar", "Car",
164                             new Acceleration(1.0, METER_PER_SECOND_2), new Acceleration(1.5, METER_PER_SECOND_2),
165                             new Length(2.0, METER), new Duration(1.0, SECOND), 2));
166                     localProperties.add(IDMPropertySet.makeIDMPropertySet("IDMTruck", "Truck",
167                             new Acceleration(0.5, METER_PER_SECOND_2), new Acceleration(1.25, METER_PER_SECOND_2),
168                             new Length(2.0, METER), new Duration(1.0, SECOND), 3));
169                     sequential.buildAnimator(Time.ZERO, Duration.ZERO, new Duration(3600.0, SECOND), localProperties, null,
170                             true);
171                     sequential.panel.getTabbedPane().addTab("info", sequential.makeInfoPane());
172                 }
173                 catch (SimRuntimeException | NamingException | OTSSimulationException | PropertyException exception)
174                 {
175                     exception.printStackTrace();
176                 }
177             }
178         });
179     }
180 
181     /** {@inheritDoc} */
182     @Override
183     protected final void addAnimationToggles()
184     {
185         AnimationToggles.setTextAnimationTogglesStandard(this);
186     }
187 
188     /** {@inheritDoc} */
189     @Override
190     protected final OTSModelInterface makeModel()
191     {
192         this.model = new SequentialModel(this.savedUserModifiedProperties);
193         return this.model;
194     }
195 
196     /**
197      * @return an info pane to be added to the tabbed pane.
198      */
199     protected final JComponent makeInfoPane()
200     {
201         // Make the info tab
202         String helpSource = "/" + StraightModel.class.getPackage().getName().replace('.', '/') + "/IDMPlus.html";
203         URL page = StraightModel.class.getResource(helpSource);
204         if (page != null)
205         {
206             try
207             {
208                 HTMLPanel htmlPanel = new HTMLPanel(page);
209                 return new JScrollPane(htmlPanel);
210             }
211             catch (IOException exception)
212             {
213                 exception.printStackTrace();
214             }
215         }
216         return new JPanel();
217     }
218 
219     /** {@inheritDoc} */
220     @Override
221     protected final void addTabs(final SimpleSimulatorInterface simulator) throws OTSSimulationException, PropertyException
222     {
223         // Make the tab with the plots
224         Property<?> output = new CompoundProperty("", "", "", this.properties, false, 0).findByKey("OutputGraphs");
225         if (null == output)
226         {
227             throw new Error("Cannot find output properties");
228         }
229         ArrayList<BooleanProperty> graphs = new ArrayList<>();
230         if (output instanceof CompoundProperty)
231         {
232             CompoundProperty outputProperties = (CompoundProperty) output;
233             for (Property<?> ap : outputProperties.getValue())
234             {
235                 if (ap instanceof BooleanProperty)
236                 {
237                     BooleanProperty bp = (BooleanProperty) ap;
238                     if (bp.getValue())
239                     {
240                         graphs.add(bp);
241                     }
242                 }
243             }
244         }
245         else
246         {
247             throw new Error("output properties should be compound");
248         }
249         int graphCount = graphs.size();
250         int columns = (int) Math.ceil(Math.sqrt(graphCount));
251         int rows = 0 == columns ? 0 : (int) Math.ceil(graphCount * 1.0 / columns);
252         TablePanel charts = new TablePanel(columns, rows);
253 
254         for (int i = 0; i < graphCount; i++)
255         {
256             String graphName = graphs.get(i).getKey();
257             Container container = null;
258             LaneBasedGTUSampler graph;
259             if (graphName.contains("Trajectories"))
260             {
261                 TrajectoryPlot tp =
262                         new TrajectoryPlot("TrajectoryPlot", new Duration(0.5, SECOND), this.model.getPath(), simulator);
263                 tp.setTitle("Trajectory Graph");
264                 tp.setExtendedState(Frame.MAXIMIZED_BOTH);
265                 graph = tp;
266                 container = tp.getContentPane();
267             }
268             else
269             {
270                 ContourPlot cp;
271                 if (graphName.contains("Density"))
272                 {
273                     cp = new DensityContourPlot("DensityPlot", this.model.getPath());
274                     cp.setTitle("Density Contour Graph");
275                 }
276                 else if (graphName.contains("Speed"))
277                 {
278                     cp = new SpeedContourPlot("SpeedPlot", this.model.getPath());
279                     cp.setTitle("Speed Contour Graph");
280                 }
281                 else if (graphName.contains("Flow"))
282                 {
283                     cp = new FlowContourPlot("FlowPlot", this.model.getPath());
284                     cp.setTitle("Flow Contour Graph");
285                 }
286                 else if (graphName.contains("Acceleration"))
287                 {
288                     cp = new AccelerationContourPlot("AccelerationPlot", this.model.getPath());
289                     cp.setTitle("Acceleration Contour Graph");
290                 }
291                 else
292                 {
293                     continue;
294                     // throw new Error("Unhandled type of contourplot: " + graphName);
295                 }
296                 graph = cp;
297                 container = cp.getContentPane();
298             }
299             // Add the container to the matrix
300             charts.setCell(container, i % columns, i / columns);
301             this.model.getPlots().add(graph);
302         }
303         addTab(getTabCount(), "statistics", charts);
304     }
305 
306     /** {@inheritDoc} */
307     @Override
308     public final String shortName()
309     {
310         return "Sequential Lanes";
311     }
312 
313     /** {@inheritDoc} */
314     @Override
315     public final String description()
316     {
317         return "<html><h1>Simulation of a straight one-lane road consisting of three consecutive Links</H1>"
318                 + "Simulation of a single lane road consisting of two 1 km stretches with a 1m stretch in between. "
319                 + "This will test transition of a GTU from one lane section onto the next.<br>"
320                 + "Vehicles are generated at a constant rate of 1500 veh/hour.<br>"
321                 + "Selected trajectory and contour plots are generated during the simulation.</html>";
322     }
323 
324     /**
325      * Build the sequential model.
326      * <p>
327      * Copyright (c) 2013-2018 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
328      * <br>
329      * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
330      * <p>
331      * $LastChangedDate: 2018-09-19 13:55:45 +0200 (Wed, 19 Sep 2018) $, @version $Revision: 4006 $, by $Author: averbraeck $,
332      * initial version 0 jan. 2015 <br>
333      * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
334      */
335     class SequentialModel implements OTSModelInterface, UNITS
336     {
337         /** */
338         private static final long serialVersionUID = 20150130L;
339 
340         /** The simulator. */
341         private DEVSSimulatorInterface.TimeDoubleUnit simulator;
342 
343         /** The network. */
344         private final OTSNetwork network = new OTSNetwork("network");
345 
346         /** The nodes of our network in the order that all GTUs will visit them. */
347         private List<OTSNode> nodes = new ArrayList<>();
348 
349         /** The car following model, e.g. IDM Plus for cars. */
350         private GTUFollowingModelOld carFollowingModelCars;
351 
352         /** The car following model, e.g. IDM Plus for trucks. */
353         private GTUFollowingModelOld carFollowingModelTrucks;
354 
355         /** The probability that the next generated GTU is a passenger car. */
356         private double carProbability;
357 
358         /** The headway (inter-vehicle time). */
359         private Duration headway;
360 
361         /** Number of cars created. */
362         private int carsCreated = 0;
363 
364         /** Type of all GTUs. */
365         private GTUType gtuType = CAR;
366 
367         /** Minimum distance. */
368         private Length minimumDistance = new Length(0, METER);
369 
370         /** The Lane where newly created Cars initially placed on. */
371         private Lane initialLane;
372 
373         /** Maximum distance. */
374         private Length maximumDistance = new Length(2001, METER);
375 
376         /** The contour plots. */
377         private List<LaneBasedGTUSampler> plots = new ArrayList<>();
378 
379         /** The random number generator used to decide what kind of GTU to generate. */
380         private Random randomGenerator = new Random(12345);
381 
382         /** User settable properties. */
383         private List<Property<?>> properties = null;
384 
385         /** The sequence of Lanes that all vehicles will follow. */
386         private List<Lane> path = new ArrayList<>();
387 
388         /** The speedLimit on all Lanes. */
389         private Speed speedLimit;
390 
391         /**
392          * @param properties the user settable properties
393          */
394         SequentialModel(final List<Property<?>> properties)
395         {
396             this.properties = properties;
397         }
398 
399         /**
400          * @return a newly created path (which all GTUs in this simulation will follow).
401          */
402         public List<Lane> getPath()
403         {
404             return new ArrayList<>(this.path);
405         }
406 
407         /** {@inheritDoc} */
408         @Override
409         public final void constructModel(final SimulatorInterface<Time, Duration, SimTimeDoubleUnit> theSimulator)
410                 throws SimRuntimeException
411         {
412             this.simulator = (DEVSSimulatorInterface.TimeDoubleUnit) theSimulator;
413             this.speedLimit = new Speed(100, KM_PER_HOUR);
414 
415             // TODO Bezier curves make 180 degree mistake when minus is true
416             boolean minus = false;
417 
418             this.nodes = new ArrayList<>();
419             try
420             {
421                 OTSNode n0 = new OTSNode(this.network, "Node(0,0)", new OTSPoint3D(0, 0));
422                 OTSNode n1 = new OTSNode(this.network, "Node(1000,0)", new OTSPoint3D(1000, 0));
423                 OTSNode n2 = new OTSNode(this.network, "Node(1020,3)", new OTSPoint3D(1020, 3));
424                 OTSNode n3 = new OTSNode(this.network, "Node(2000,197)", new OTSPoint3D(2000, 197));
425                 OTSNode n4 = new OTSNode(this.network, "Node(2020,200)", new OTSPoint3D(2020, 200));
426                 OTSNode n5 = new OTSNode(this.network, "Node(2200,200)", new OTSPoint3D(2200, 200));
427                 this.nodes.addAll(Arrays.asList(new OTSNode[] { n0, n1, n2, n3, n4, n5 }));
428 
429                 LaneType laneType = LaneType.TWO_WAY_LANE;
430 
431                 // Now we can build a series of Links with one Lane on them
432                 ArrayList<CrossSectionLink> links = new ArrayList<>();
433                 OTSLine3D l01 = new OTSLine3D(n0.getPoint(), n1.getPoint());
434                 OTSLine3D l12 = LaneFactory.makeBezier(n0, n1, n2, n3);
435                 OTSLine3D l23 =
436                         minus ? new OTSLine3D(n3.getPoint(), n2.getPoint()) : new OTSLine3D(n2.getPoint(), n3.getPoint());
437                 OTSLine3D l34 = LaneFactory.makeBezier(n2, n3, n4, n5);
438                 OTSLine3D l45 = new OTSLine3D(n4.getPoint(), n5.getPoint());
439                 OTSLine3D[] lines = new OTSLine3D[] { l01, l12, l23, l34, l45 };
440 
441                 for (int i = 1; i < this.nodes.size(); i++)
442                 {
443                     OTSNode fromNode = this.nodes.get(i - 1);
444                     OTSNode toNode = this.nodes.get(i);
445                     OTSLine3D line = lines[i - 1];
446                     String linkName = fromNode.getId() + "-" + toNode.getId();
447                     LongitudinalDirectionality direction = line.equals(l23) && minus ? LongitudinalDirectionality.DIR_MINUS
448                             : LongitudinalDirectionality.DIR_PLUS;
449                     Lane[] lanes = LaneFactory.makeMultiLane(this.network, linkName, fromNode, toNode, line.getPoints(), 1,
450                             laneType, this.speedLimit, this.simulator);
451                     if (i == this.nodes.size() - 1)
452                     {
453                         new SinkSensor(lanes[0], new Length(100.0, METER), this.simulator);
454                     }
455                     this.path.add(lanes[0]);
456                     links.add(lanes[0].getParentLink());
457                     if (1 == i)
458                     {
459                         this.initialLane = lanes[0];
460                     }
461                 }
462             }
463             catch (NamingException | NetworkException | OTSGeometryException exception)
464             {
465                 exception.printStackTrace();
466             }
467 
468             // 1500 [veh / hour] == 2.4s headway
469             this.headway = new Duration(3600.0 / 1500.0, SECOND);
470             // Schedule creation of the first car (it will re-schedule itself one headway later, etc.).
471             this.simulator.scheduleEventAbs(Time.ZERO, this, this, "generateCar", null);
472             // Schedule regular updates of the graphs
473             for (int t = 1; t <= 1800; t++)
474             {
475                 this.simulator.scheduleEventAbs(new Time(t - 0.001, TimeUnit.BASE_SECOND), this, this, "drawGraphs", null);
476             }
477             try
478             {
479                 String carFollowingModelName = null;
480                 CompoundProperty propertyContainer = new CompoundProperty("", "", "", this.properties, false, 0);
481                 Property<?> cfmp = propertyContainer.findByKey("CarFollowingModel");
482                 if (null == cfmp)
483                 {
484                     throw new Error("Cannot find \"Car following model\" property");
485                 }
486                 if (cfmp instanceof SelectionProperty)
487                 {
488                     carFollowingModelName = ((SelectionProperty) cfmp).getValue();
489                 }
490                 else
491                 {
492                     throw new Error("\"Car following model\" property has wrong type");
493                 }
494                 for (Property<?> ap : new CompoundProperty("", "", "", this.properties, false, 0))
495                 {
496                     if (ap instanceof SelectionProperty)
497                     {
498                         SelectionProperty sp = (SelectionProperty) ap;
499                         if ("CarFollowingModel".equals(sp.getKey()))
500                         {
501                             carFollowingModelName = sp.getValue();
502                         }
503                     }
504                     else if (ap instanceof ProbabilityDistributionProperty)
505                     {
506                         ProbabilityDistributionProperty pdp = (ProbabilityDistributionProperty) ap;
507                         if (ap.getKey().equals("TrafficComposition"))
508                         {
509                             this.carProbability = pdp.getValue()[0];
510                         }
511                     }
512                     else if (ap instanceof CompoundProperty)
513                     {
514                         CompoundProperty cp = (CompoundProperty) ap;
515                         if (ap.getKey().equals("OutputGraphs"))
516                         {
517                             continue; // Output settings are handled elsewhere
518                         }
519                         if (ap.getKey().contains("IDM"))
520                         {
521                             // System.out.println("Car following model name appears to be " + ap.getKey());
522                             Acceleration a = IDMPropertySet.getA(cp);
523                             Acceleration b = IDMPropertySet.getB(cp);
524                             Length s0 = IDMPropertySet.getS0(cp);
525                             Duration tSafe = IDMPropertySet.getTSafe(cp);
526                             GTUFollowingModelOld gtuFollowingModel = null;
527                             if (carFollowingModelName.equals("IDM"))
528                             {
529                                 gtuFollowingModel = new IDMOld(a, b, s0, tSafe, 1.0);
530                             }
531                             else if (carFollowingModelName.equals("IDM+"))
532                             {
533                                 gtuFollowingModel = new IDMPlusOld(a, b, s0, tSafe, 1.0);
534                             }
535                             else
536                             {
537                                 throw new Error("Unknown gtu following model: " + carFollowingModelName);
538                             }
539                             if (ap.getKey().contains("Car"))
540                             {
541                                 this.carFollowingModelCars = gtuFollowingModel;
542                             }
543                             else if (ap.getKey().contains("Truck"))
544                             {
545                                 this.carFollowingModelTrucks = gtuFollowingModel;
546                             }
547                             else
548                             {
549                                 throw new Error("Cannot determine gtu type for " + ap.getKey());
550                             }
551                         }
552                     }
553                 }
554             }
555             catch (Exception e)
556             {
557                 System.out.println("Caught exception " + e);
558             }
559         }
560 
561         /** {@inheritDoc} */
562         @Override
563         public SimulatorInterface<Time, Duration, SimTimeDoubleUnit> getSimulator()
564         {
565             return this.simulator;
566         }
567 
568         /** {@inheritDoc} */
569         @Override
570         public OTSNetwork getNetwork()
571         {
572             return this.network;
573         }
574 
575         /**
576          * @return contourPlots
577          */
578         public final List<LaneBasedGTUSampler> getPlots()
579         {
580             return this.plots;
581         }
582 
583         /**
584          * @return minimumDistance
585          */
586         public final Length getMinimumDistance()
587         {
588             return this.minimumDistance;
589         }
590 
591         /**
592          * @return maximumDistance
593          */
594         public final Length getMaximumDistance()
595         {
596             return this.maximumDistance;
597         }
598 
599         /**
600          * Notify the contour plots that the underlying data has changed.
601          */
602         protected final void drawGraphs()
603         {
604             for (LaneBasedGTUSampler plot : this.plots)
605             {
606                 plot.reGraph();
607             }
608         }
609 
610         /**
611          * Generate cars at a fixed rate (implemented by re-scheduling this method).
612          */
613         protected final void generateCar()
614         {
615             boolean generateTruck = this.randomGenerator.nextDouble() > this.carProbability;
616             Length initialPosition = new Length(0, METER);
617             Speed initialSpeed = new Speed(100, KM_PER_HOUR);
618             Set<DirectedLanePosition> initialPositions = new LinkedHashSet<>(1);
619             try
620             {
621                 initialPositions.add(new DirectedLanePosition(this.initialLane, initialPosition, GTUDirectionality.DIR_PLUS));
622                 Length vehicleLength = new Length(generateTruck ? 15 : 4, METER);
623                 GTUFollowingModelOld gtuFollowingModel =
624                         generateTruck ? this.carFollowingModelTrucks : this.carFollowingModelCars;
625                 if (null == gtuFollowingModel)
626                 {
627                     throw new Error("gtuFollowingModel is null");
628                 }
629                 Parameters parameters = DefaultsFactory.getDefaultParameters();
630                 LaneBasedIndividualGTU gtu = new LaneBasedIndividualGTU("" + (++this.carsCreated), this.gtuType, vehicleLength,
631                         new Length(1.8, METER), new Speed(200, KM_PER_HOUR), vehicleLength.multiplyBy(0.5), this.simulator,
632                         this.network);
633                 LaneBasedStrategicalPlanner strategicalPlanner = new LaneBasedStrategicalRoutePlanner(
634                         new LaneBasedGTUFollowingTacticalPlanner(gtuFollowingModel, gtu), gtu);
635                 gtu.setParameters(parameters);
636                 gtu.initWithAnimation(strategicalPlanner, initialPositions, initialSpeed, DefaultCarAnimation.class,
637                         SequentialLanes.this.getColorer());
638                 this.simulator.scheduleEventRel(this.headway, this, this, "generateCar", null);
639             }
640             catch (SimRuntimeException | NamingException | NetworkException | GTUException | OTSGeometryException exception)
641             {
642                 exception.printStackTrace();
643             }
644         }
645 
646     }
647 }