package org.opentrafficsim.animation.lane;
   
   import org.djunits.value.vdouble.scalar.Length;
   import org.djutils.draw.point.OrientedPoint2d;
   import org.opentrafficsim.base.geometry.BoundingBox;
   import org.opentrafficsim.base.geometry.OtsBounds2d;
   import org.opentrafficsim.base.geometry.OtsLocatable;
   import org.opentrafficsim.core.geometry.OtsGeometryException;
   import org.opentrafficsim.core.gtu.Gtu;
  import org.opentrafficsim.road.gtu.lane.perception.LaneStructureRecord;
  import org.opentrafficsim.road.gtu.lane.perception.RollingLaneStructure;
  
  /**
   * LaneStructureLocatable.java.
   * <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" target="_blank">Alexander Verbraeck</a>
   */
  public class LaneStructureLocatable implements OtsLocatable
  {
      /** RollingLaneStructure. */
      private final RollingLaneStructure rollingLaneStructure;
  
      /** GTU. */
      private final Gtu gtu;
  
      /**
       * @param rollingLaneStructure RollingLaneStructure; the rolling lane structure
       * @param gtu Gtu; the gtu
       */
      public LaneStructureLocatable(final RollingLaneStructure rollingLaneStructure, final Gtu gtu)
      {
          this.rollingLaneStructure = rollingLaneStructure;
          this.gtu = gtu;
      }
  
      /** {@inheritDoc} */
      @Override
      public OrientedPoint2d getLocation()
      {
          LaneStructureRecord rt = this.rollingLaneStructure.getRootRecord();
          if (rt == null)
          {
              return this.gtu.getLocation();
          }
          Length position = rt.getStartDistance().neg();
          position = position.lt0() ? Length.ZERO : position;
          try
          {
              return rt.getLane().getCenterLine().getLocation(position);
          }
          catch (OtsGeometryException exception)
          {
              throw new RuntimeException("Unable to return location.", exception);
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public OtsBounds2d getBounds()
      {
          return new BoundingBox(1000000, 1000000);
      }
  
      /**
       * @return rollingLaneStructure
       */
      public final RollingLaneStructure getRollingLaneStructure()
      {
          return this.rollingLaneStructure;
      }
  
      /**
       * @return gtu
       */
      public final Gtu getGtu()
      {
          return this.gtu;
      }
  
  }