package org.opentrafficsim.draw.road;
   
   import java.awt.Color;
   import java.awt.Graphics2D;
   import java.awt.image.ImageObserver;
   import java.io.Serializable;
   import java.rmi.RemoteException;
   import java.util.ArrayList;
   import java.util.List;
  
  import javax.naming.NamingException;
  
  import org.opentrafficsim.core.geometry.OTSGeometryException;
  import org.opentrafficsim.core.geometry.OTSLine3D;
  import org.opentrafficsim.core.geometry.OTSPoint3D;
  import org.opentrafficsim.road.network.lane.object.sensor.TrafficLightSensor;
  
  import nl.tudelft.simulation.dsol.animation.D2.Renderable2D;
  import nl.tudelft.simulation.dsol.simulators.SimulatorInterface;
  
  /**
   * sink sensor animation.
   * <p>
   * Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands.<br>
   * All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * <p>
   * $LastChangedDate: 2015-08-12 16:37:45 +0200 (Wed, 12 Aug 2015) $, @version $Revision: 1240 $, by $Author: averbraeck $,
   * initial version Jan 30, 2015 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
   */
  public class TrafficLightSensorAnimation extends Renderable2D<TrafficLightSensor> implements Serializable
  {
      /** */
      private static final long serialVersionUID = 20150130L;
  
      /** The traffic light sensor. */
      private final TrafficLightSensor sensor;
  
      /** Path of the detector. */
      private final OTSLine3D path;
  
      /**
       * Construct a SensorAnimation.
       * @param sensor TrafficLightSensor; the traffic light sensor that will be animated
       * @param simulator SimulatorInterface.TimeDoubleUnit; the simulator to schedule on
       * @throws NamingException in case of registration failure of the animation
       * @throws RemoteException in case of remote registration failure of the animation
       * @throws OTSGeometryException when the geometry is bad
       */
      public TrafficLightSensorAnimation(final TrafficLightSensor sensor, final SimulatorInterface.TimeDoubleUnit simulator)
              throws NamingException, RemoteException, OTSGeometryException
      {
          super(sensor, simulator);
          this.sensor = sensor;
          OTSLine3D coordinates = this.sensor.getPath();
          double dx = this.sensor.getLocation().x;
          double dy = this.sensor.getLocation().y;
          double dz = this.sensor.getLocation().z;
          List<OTSPoint3D> points = new ArrayList<>(coordinates.size());
          for (OTSPoint3D p : coordinates.getPoints())
          {
              points.add(new OTSPoint3D(p.x - dx, p.y - dy, p.z - dz));
          }
          this.path = new OTSLine3D(points);
      }
  
      /** {@inheritDoc} */
      @Override
      public final void paint(final Graphics2D graphics, final ImageObserver observer)
      {
          graphics.setColor(this.sensor.getOccupancy() ? Color.BLUE : Color.BLACK);
          OTSPoint3D prevPoint = null;
          for (OTSPoint3D p : this.path.getPoints())
          {
              if (null != prevPoint)
              {
                  // System.out.println("Drawing sensor line from " + prevPoint + " to " + p);
                  graphics.drawLine((int) prevPoint.x, (int) prevPoint.y, (int) p.x, (int) p.y);
              }
              prevPoint = p;
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public final String toString()
      {
          return "SensorAnimation [getSource()=" + this.getSource() + "]";
      }
  
  }