package org.opentrafficsim.draw.road;
   
   import java.awt.BasicStroke;
   import java.awt.Color;
   import java.awt.Graphics2D;
   import java.awt.Stroke;
   import java.awt.geom.Path2D;
   import java.awt.image.ImageObserver;
   import java.rmi.RemoteException;
  import java.util.Set;
  
  import javax.naming.NamingException;
  
  import org.djunits.unit.LengthUnit;
  import org.djunits.value.vdouble.scalar.Length;
  import org.opentrafficsim.draw.PaintPolygons;
  import org.opentrafficsim.draw.road.AbstractLineAnimation.LaneBasedObjectData;
  import org.opentrafficsim.draw.road.ConflictAnimation.ConflictData;
  
  import nl.tudelft.simulation.naming.context.Contextualized;
  
  /**
   * Animate a conflict.
   * <p>
   * Copyright (c) 2013-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * </p>
   * @author <a href="https://github.com/averbraeck">Alexander Verbraeck</a>
   * @author <a href="https://github.com/peter-knoppers">Peter Knoppers</a>
   * @author <a href="https://github.com/wjschakel">Wouter Schakel</a>
   */
  public class ConflictAnimation extends AbstractLineAnimation<ConflictData>
  {
  
      /** Drawable paths. */
      private final Set<Path2D.Float> paths;
  
      /**
       * Constructor.
       * @param source the conflict to draw
       * @param contextualized context provider
       * @throws NamingException in case of registration failure of the animation
       * @throws RemoteException on communication failure
       */
      public ConflictAnimation(final ConflictData source, final Contextualized contextualized)
              throws NamingException, RemoteException
      {
          super(source, contextualized, new Length(0.5, LengthUnit.SI));
          // geometry of area (not the line) is absolute; pre-transform geometry to fit rotation of source
          this.paths = this.getSource().getAbsoluteContour() == null ? null
                  : PaintPolygons.getPaths(getSource().getLocation(), getSource().getAbsoluteContour().getPointList());
      }
  
      @Override
      public final void paint(final Graphics2D graphics, final ImageObserver observer)
      {
          // paint the bar that represents the line where the conflict starts, like any other AbstractLineAnimation
          Color fillColor = getSource().getColor();
          graphics.setColor(fillColor);
          super.paint(graphics, observer);
  
          // paint the additional area with dashed lines
          Stroke oldStroke = graphics.getStroke();
          BasicStroke stroke;
          float factor = getSource().isPermitted() ? .5f : 1f;
          if (getSource().isCrossing())
          {
              stroke = new BasicStroke(.1f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f,
                      new float[] {factor * 1.0f, factor * 2.0f}, 0.0f);
          }
          else
          {
              stroke = new BasicStroke(.1f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f,
                      new float[] {factor * 1.0f, factor * 0.95f, factor * 0.1f, factor * 0.95f}, 0.0f);
          }
          graphics.setStroke(stroke);
          if (this.paths != null)
          {
              setRendering(graphics);
              PaintPolygons.paintPaths(graphics, fillColor, this.paths, false);
              resetRendering(graphics);
          }
          graphics.setStroke(oldStroke);
      }
  
      @Override
      public final String toString()
      {
          return "ConflictAnimation [getSource()=" + getSource() + "]";
      }
  
      /**
       * ConflictData provides the information required to draw a conflict.
       * <p>
       * Copyright (c) 2023-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
       * <br>
       * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
       * </p>
       * @author <a href="https://github.com/wjschakel">Wouter Schakel</a>
      */
     public interface ConflictData extends LaneBasedObjectData
     {
         /**
          * Returns the conflict color.
          * @return conflict color.
          */
         Color getColor();
 
         /**
          * Whether the conflict is a crossing.
          * @return whether the conflict is a crossing.
          */
         boolean isCrossing();
 
         /**
          * Whether the conflict is a permitted conflict.
          * @return whether the conflict is a permitted conflict.
          */
         boolean isPermitted();
     }
 
 }