package org.opentrafficsim.core.object;
   
   import org.djunits.value.vdouble.scalar.Length;
   import org.djutils.draw.bounds.Bounds2d;
   import org.djutils.draw.line.Polygon2d;
   import org.djutils.draw.point.DirectedPoint2d;
   import org.djutils.event.LocalEventProducer;
   import org.djutils.exceptions.Throw;
   import org.opentrafficsim.base.geometry.OtsShape;
  import org.opentrafficsim.core.network.NetworkException;
  
  /**
   * A static object with a height that a GTU might have to avoid, or which can cause occlusion for perception. All objects are
   * potential event producers, which allows them to signal that their state has changed.
   * <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>
   */
  public class StaticObject extends LocalEventProducer implements LocatedObject
  {
      /** the id. */
      private final String id;
  
      /** Relative contour. */
      private final Polygon2d relativeContour;
  
      /** Absolute contour. */
      private final Polygon2d absoluteContour;
  
      /** Location. */
      private final DirectedPoint2d location;
  
      /** The height of the object. */
      private final Length height;
  
      /**
       * Constructor.
       * @param id the id
       * @param location location.
       * @param absoluteContour absolute contour
       * @param height the height of the object
       */
      protected StaticObject(final String id, final DirectedPoint2d location, final Polygon2d absoluteContour,
              final Length height)
      {
          Throw.whenNull(id, "id");
          Throw.whenNull(location, "location");
          Throw.whenNull(absoluteContour, "absoluteContour");
          Throw.whenNull(height, "height");
  
          this.id = id;
          this.location = location;
          this.relativeContour = new Polygon2d(OtsShape.toRelativeTransform(location).transform(absoluteContour.iterator()));
          this.absoluteContour = absoluteContour;
          this.height = height;
      }
  
      /**
       * Initialize the object after it has been fully created.
       * @throws NetworkException e.g. on error registering the object in the network
       */
      @SuppressWarnings("checkstyle:designforextension")
      protected void init() throws NetworkException
      {
          // notify the potential animation of the existence of a StaticObject
          // These next events are fired by the Network when the object is registered in the Network.
          // fireTimedEvent(Network.OBJECT_ADD_EVENT, this.id);
          // fireTimedEvent(Network.ANIMATION_OBJECT_ADD_EVENT, this);
      }
  
      /**
       * Make a static object and carry out the initialization after it has been fully created.
       * @param id the id
       * @param geometry the top-level 2D outline of the object
       * @param height the height of the object
       * @return the static object
       * @throws NetworkException e.g. on error registering the object in the network
       */
      public static StaticObject create(final String id, final Polygon2d geometry, final Length height) throws NetworkException
      {
          DirectedPoint2d point = new DirectedPoint2d(geometry.getAbsoluteBounds().midPoint(), 0.0);
          StaticObject staticObject = new StaticObject(id, point, geometry, height);
          staticObject.init();
          return staticObject;
      }
  
      /**
       * Make a static object with zero height and carry out the initialization after it has been fully created.
       * @param id the id
       * @param geometry the top-level 2D outline of the object
       * @return the static object
       * @throws NetworkException e.g. on error registering the object in the network
       */
      public static StaticObject create(final String id, final Polygon2d geometry) throws NetworkException
      {
          return create(id, geometry, Length.ZERO);
     }
 
     @Override
     public Polygon2d getAbsoluteContour()
     {
         return this.absoluteContour;
     }
 
     @Override
     public Polygon2d getRelativeContour()
     {
         return this.relativeContour;
     }
 
     @Override
     public final Length getHeight()
     {
         return this.height;
     }
 
     @Override
     public final String getId()
     {
         return this.id;
     }
 
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public String getFullId()
     {
         return this.id;
     }
 
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public DirectedPoint2d getLocation()
     {
         return this.location;
     }
 
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public Bounds2d getRelativeBounds()
     {
         return this.relativeContour.getAbsoluteBounds();
     }
 
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public String toString()
     {
         return "StaticObject [contour=" + getAbsoluteContour() + ", height=" + this.height + "]";
     }
 
 }