package org.opentrafficsim.draw.gtu;
   
   import java.awt.BasicStroke;
   import java.awt.Color;
   import java.awt.Graphics2D;
   import java.awt.geom.Ellipse2D;
   import java.awt.geom.Rectangle2D;
   import java.awt.geom.RectangularShape;
   import java.awt.image.ImageObserver;
  import java.io.Serializable;
  import java.rmi.RemoteException;
  
  import javax.naming.NamingException;
  
  import org.opentrafficsim.core.animation.gtu.colorer.DefaultSwitchableGTUColorer;
  import org.opentrafficsim.core.animation.gtu.colorer.GTUColorer;
  import org.opentrafficsim.core.animation.gtu.colorer.IDGTUColorer;
  import org.opentrafficsim.core.gtu.GTUType;
  import org.opentrafficsim.draw.core.ClonableRenderable2DInterface;
  import org.opentrafficsim.draw.core.TextAlignment;
  import org.opentrafficsim.draw.core.TextAnimation;
  import org.opentrafficsim.road.gtu.lane.LaneBasedGTU;
  import org.opentrafficsim.road.gtu.lane.LaneBasedIndividualGTU;
  
  import nl.tudelft.simulation.dsol.animation.Locatable;
  import nl.tudelft.simulation.dsol.animation.D2.Renderable2D;
  import nl.tudelft.simulation.dsol.simulators.SimulatorInterface;
  import nl.tudelft.simulation.language.d2.Angle;
  import nl.tudelft.simulation.language.d3.DirectedPoint;
  
  /**
   * Draw a car.
   * <p>
   * Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * <p>
   * @version $Revision: 1401 $, $LastChangedDate: 2015-09-14 01:33:02 +0200 (Mon, 14 Sep 2015) $, by $Author: averbraeck $,
   *          initial version 29 dec. 2014 <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 DefaultCarAnimation extends Renderable2D<LaneBasedGTU>
          implements ClonableRenderable2DInterface<LaneBasedGTU>, Serializable
  {
      /** */
      private static final long serialVersionUID = 20150000L;
  
      /** The GTUColorer that determines the fill color for the car. */
      private GTUColorer gtuColorer = new DefaultSwitchableGTUColorer();
  
      /** the Text object to destroy when the GTU animation is destroyed. */
      private Text text;
  
      /** is the animation destroyed? */
      private boolean isDestroyed = false;
  
      /** Hashcode. */
      private final int hashCode;
  
      /** GTU outline. */
      private Rectangle2D.Double rectangle;
  
      /** Front indicator (white circle). */
      private Ellipse2D.Double frontIndicator;
  
      /** Left indicator. */
      private Rectangle2D.Double leftIndicator;
  
      /** Right indicator. */
      private Rectangle2D.Double rightIndicator;
  
      /** Left brake light. */
      private Rectangle2D.Double leftBrake;
  
      /** Right brake light. */
      private Rectangle2D.Double rightBrake;
  
      /** Dot if zoomed out. */
      private RectangularShape dot;
  
      /**
       * Construct the DefaultCarAnimation for a LaneBasedIndividualCar.
       * @param gtu LaneBasedGTU; the Car to draw
       * @param simulator SimulatorInterface.TimeDoubleUnit; the simulator to schedule on
       * @throws NamingException in case of registration failure of the animation
       * @throws RemoteException on communication failure
       */
      public DefaultCarAnimation(final LaneBasedGTU gtu, final SimulatorInterface.TimeDoubleUnit simulator)
              throws NamingException, RemoteException
      {
          this(gtu, simulator, null);
      }
  
      /**
       * Construct the DefaultCarAnimation for a LaneBasedIndividualCar.
       * @param gtu LaneBasedGTU; the Car to draw
       * @param simulator SimulatorInterface.TimeDoubleUnit; the simulator to schedule on
       * @param gtuColorer GTUColorer; the GTUColorer that determines what fill color to use
       * @throws NamingException in case of registration failure of the animation
      * @throws RemoteException on communication failure
      */
     public DefaultCarAnimation(final LaneBasedGTU gtu, final SimulatorInterface.TimeDoubleUnit simulator,
             final GTUColorer gtuColorer) throws NamingException, RemoteException
     {
         super(gtu, simulator);
         this.hashCode = gtu.hashCode();
         if (null == gtuColorer)
         {
             this.gtuColorer = new IDGTUColorer();
         }
         else
         {
             this.gtuColorer = gtuColorer;
         }
 
         this.text = new Text(gtu, gtu.getId(), 0.0f, 0.0f, TextAlignment.CENTER, Color.BLACK, simulator);
 
     }
 
     /**
      * Replace the GTUColorer.
      * @param newGTUColorer GTUColorer; the GTUColorer to use from now on
      */
     public final void setGTUColorer(final GTUColorer newGTUColorer)
     {
         this.gtuColorer = newGTUColorer;
     }
 
     /** {@inheritDoc} */
     @Override
     public final void paint(final Graphics2D graphics, final ImageObserver observer)
     {
         final LaneBasedGTU gtu = getSource();
 
         if (gtu.isDestroyed())
         {
             if (!this.isDestroyed)
             {
                 try
                 {
                     destroy();
                 }
                 catch (Exception e)
                 {
                     System.err.println("Error while destroying GTU " + gtu.getId());
                     e.printStackTrace();
                 }
             }
             return;
         }
 
         if (this.rectangle == null)
         {
             // set shapes, this is done in paint() and not the constructor, as the super constructor binds to context causing
             // paint commands before the shapes are calculated in the constructor
             final double length = gtu.getLength().si;
             final double lFront = gtu.getFront().getDx().si;
             final double lRear = gtu.getRear().getDx().si;
             final double width = gtu.getWidth().si;
             final double w2 = width / 2;
             final double w4 = width / 4;
             this.rectangle = new Rectangle2D.Double(lRear, -w2, length, width);
             this.frontIndicator = new Ellipse2D.Double(lFront - w2 - w4, -w4, w2, w2);
             this.leftIndicator = new Rectangle2D.Double(lFront - w4, -w2, w4, w4);
             this.rightIndicator = new Rectangle2D.Double(lFront - w4, w2 - w4, w4, w4);
             this.leftBrake = new Rectangle2D.Double(lRear, w2 - w4, w4, w4);
             this.rightBrake = new Rectangle2D.Double(lRear, -w2, w4, w4);
             this.dot = gtu.getGTUType().isOfType(GTUType.TRUCK) ? new Rectangle2D.Double(0, 0, 0, 0)
                     : new Ellipse2D.Double(0, 0, 0, 0);
         }
 
         double scale = graphics.getTransform().getDeterminant();
         // Math.sqrt(Math.pow(graphics.getTransform()..getScaleX(), 2)
         // Math.pow(graphics.getTransform().getScaleY(), 2));
         if (scale > 1)
         {
             graphics.setColor(this.gtuColorer.getColor(gtu));
             BasicStroke saveStroke = (BasicStroke) graphics.getStroke();
             graphics.setStroke(new BasicStroke(0));
             graphics.fill(this.rectangle);
 
             // Draw a white disk at the front to indicate which side faces forward
             graphics.setColor(Color.WHITE);
             graphics.fill(this.frontIndicator);
 
             // turn indicator lights
             graphics.setColor(Color.YELLOW);
             if (gtu.getTurnIndicatorStatus() != null && gtu.getTurnIndicatorStatus().isLeftOrBoth())
             {
                 graphics.fill(this.leftIndicator);
             }
             if (gtu.getTurnIndicatorStatus() != null && gtu.getTurnIndicatorStatus().isRightOrBoth())
             {
                 graphics.fill(this.rightIndicator);
             }
 
             // braking lights
             if (gtu.isBrakingLightsOn())
             {
                 graphics.setColor(Color.RED);
                 graphics.fill(this.leftBrake);
                 graphics.fill(this.rightBrake);
             }
             graphics.setStroke(saveStroke);
         }
         else
         {
             // zoomed out, draw as marker with 7px diameter
             graphics.setColor(this.gtuColorer.getColor(gtu));
             double w = 7.0 / Math.sqrt(scale);
             double x = -w / 2.0;
             this.dot.setFrame(x, x, w, w);
             graphics.fill(this.dot);
         }
 
     }
 
     /** {@inheritDoc} */
     @Override
     public final void destroy() throws NamingException
     {
         this.isDestroyed = true;
         super.destroy();
         this.text.destroy();
     }
 
     /** {@inheritDoc} */
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public ClonableRenderable2DInterface<LaneBasedGTU> clone(final LaneBasedGTU newSource,
             final SimulatorInterface.TimeDoubleUnit newSimulator) throws NamingException, RemoteException
     {
         // the constructor also constructs the corresponding Text object
         return new DefaultCarAnimation(newSource, newSimulator, this.gtuColorer);
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString()
     {
         return super.toString(); // this.getSource().toString();
     }
 
     /** {@inheritDoc} */
     @Override
     public int hashCode()
     {
         return this.hashCode;
     }
 
     /** {@inheritDoc} */
     @Override
     public boolean equals(final Object object)
     {
         // only here to prevent a 'hashCode without equals' warning
         return super.equals(object);
     }
 
     /**
      * Text animation for the Car. Separate class to be able to turn it on and off...
      * <p>
      * Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
      * <br>
      * BSD-style license. See <a href="http://opentrafficsim.org/docs/current/license.html">OpenTrafficSim License</a>.
      * </p>
      * $LastChangedDate: 2015-07-24 02:58:59 +0200 (Fri, 24 Jul 2015) $, @version $Revision: 1147 $, by $Author: averbraeck $,
      * initial version Dec 11, 2016 <br>
      * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
      * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
      * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
      */
     public class Text extends TextAnimation
     {
         /** */
         private static final long serialVersionUID = 20161211L;
 
         /** is the animation destroyed? */
         private boolean isTextDestroyed = false;
 
         /**
          * @param source Locatable; the object for which the text is displayed
          * @param text String; the text to display
          * @param dx float; the horizontal movement of the text, in meters
          * @param dy float; the vertical movement of the text, in meters
          * @param textAlignment TextAlignment; where to place the text
          * @param color Color; the color of the text
          * @param simulator SimulatorInterface.TimeDoubleUnit; the simulator
          * @throws NamingException when animation context cannot be created or retrieved
          * @throws RemoteException - when remote context cannot be found
          */
         public Text(final Locatable source, final String text, final float dx, final float dy,
                 final TextAlignment textAlignment, final Color color, final SimulatorInterface.TimeDoubleUnit simulator)
                 throws RemoteException, NamingException
         {
             super(source, text, dx, dy, textAlignment, color, 1.0f, 12.0f, simulator);
         }
 
         /** {@inheritDoc} */
         @Override
         public final void paint(final Graphics2D graphics, final ImageObserver observer) throws RemoteException
         {
             final LaneBasedIndividualGTU car = (LaneBasedIndividualGTU) getSource();
 
             if (car.isDestroyed())
             {
                 if (!this.isTextDestroyed)
                 {
                     try
                     {
                         destroy();
                     }
                     catch (Exception e)
                     {
                         System.err.println("Error while destroying text animation of GTU " + car.getId());
                     }
                     this.isTextDestroyed = true;
                 }
                 return;
             }
 
             super.paint(graphics, observer);
         }
 
         /** {@inheritDoc} */
         @Override
         @SuppressWarnings("checkstyle:designforextension")
         public DirectedPoint getLocation() throws RemoteException
         {
             // draw always on top, and not upside down.
             DirectedPoint p = ((LaneBasedIndividualGTU) getSource()).getLocation();
             double a = Angle.normalizePi(p.getRotZ());
             if (a > Math.PI / 2.0 || a < -0.99 * Math.PI / 2.0)
             {
                 a += Math.PI;
             }
             return new DirectedPoint(p.x, p.y, Double.MAX_VALUE, 0.0, 0.0, a);
         }
 
         /** {@inheritDoc} */
         @Override
         @SuppressWarnings("checkstyle:designforextension")
         public TextAnimation clone(final Locatable newSource, final SimulatorInterface.TimeDoubleUnit newSimulator)
                 throws RemoteException, NamingException
         {
             return new Text(newSource, getText(), getDx(), getDy(), getTextAlignment(), getColor(), newSimulator);
         }
 
         /** {@inheritDoc} */
         @Override
         public final String toString()
         {
             return "Text [isTextDestroyed=" + this.isTextDestroyed + "]";
         }
 
     }
 
 }