package org.opentrafficsim.core.gtu;
   
   import java.io.Serializable;
   
   import org.djunits.value.vdouble.scalar.Acceleration;
   import org.djunits.value.vdouble.scalar.Length;
   import org.djunits.value.vdouble.scalar.Speed;
   import org.djutils.exceptions.Throw;
   import org.opentrafficsim.base.parameters.ParameterException;
  import org.opentrafficsim.core.distributions.ConstantGenerator;
  import org.opentrafficsim.core.distributions.Generator;
  import org.opentrafficsim.core.distributions.ProbabilityException;
  
  /**
   * TemplateGTUType stores some of the information that is needed to generate a GTU.
   * <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>
   * $LastChangedDate: 2019-03-26 15:54:58 +0100 (Tue, 26 Mar 2019) $, @version $Revision: 5190 $, by $Author: wjschakel $,
   * initial version Jul 8, 2014 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   */
  public class TemplateGTUType implements Serializable, Generator<GTUCharacteristics>
  {
      /** */
      private static final long serialVersionUID = 20141230L;
  
      /** The type of the GTU. */
      private final GTUType gtuType;
  
      /** Generator for the length of the GTU. */
      private final Generator<Length> lengthGenerator;
  
      /** Generator for the width of the GTU. */
      private final Generator<Length> widthGenerator;
  
      /** Generator for the maximum speed of the GTU. */
      private final Generator<Speed> maximumSpeedGenerator;
  
      /** Generator for the maximum acceleration of the GTU. */
      private final Generator<Acceleration> maxAcceleration;
  
      /** Generator for the maximum deceleration of the GTU. */
      private final Generator<Acceleration> maxDeceleration;
  
      /**
       * @param gtuType GTUType; GTUType, the GTUType to make it identifiable.
       * @param lengthGenerator Generator&lt;Length&gt;; generator for the length of the GTU type (parallel with driving
       *            direction).
       * @param widthGenerator Generator&lt;Length&gt;; generator for the width of the GTU type (perpendicular to driving
       *            direction).
       * @param maximumSpeedGenerator Generator&lt;Speed&gt;; generator for the maximum speed of the GTU type (in the driving
       *            direction).
       * @throws NullPointerException when one of the arguments is null
       */
      public TemplateGTUType(final GTUType gtuType, final Generator<Length> lengthGenerator,
              final Generator<Length> widthGenerator, final Generator<Speed> maximumSpeedGenerator) throws NullPointerException
      {
          this(gtuType, lengthGenerator, widthGenerator, maximumSpeedGenerator,
                  new ConstantGenerator<>(Acceleration.createSI(3.0)), new ConstantGenerator<>(Acceleration.createSI(-8.0)));
      }
  
      /**
       * @param gtuType GTUType; GTUType, the GTUType to make it identifiable.
       * @param lengthGenerator Generator&lt;Length&gt;; generator for the length of the GTU type (parallel with driving
       *            direction).
       * @param widthGenerator Generator&lt;Length&gt;; generator for the width of the GTU type (perpendicular to driving
       *            direction).
       * @param maximumSpeedGenerator Generator&lt;Speed&gt;; generator for the maximum speed of the GTU type (in the driving
       *            direction).
       * @param maximumAccelerationGenerator Generator&lt;Acceleration&gt;; generator for the maximum acceleration of the GTU type
       * @param maximumDecelerationGenerator Generator&lt;Acceleration&gt;; generator for the maximum deceleration of the GTU type
       * @throws NullPointerException when one of the arguments is null
       */
      public TemplateGTUType(final GTUType gtuType, final Generator<Length> lengthGenerator,
              final Generator<Length> widthGenerator, final Generator<Speed> maximumSpeedGenerator,
              final Generator<Acceleration> maximumAccelerationGenerator,
              final Generator<Acceleration> maximumDecelerationGenerator) throws NullPointerException
      {
          Throw.whenNull(gtuType, "gtuType is null");
          Throw.whenNull(lengthGenerator, "lengthGenerator is null");
          Throw.whenNull(widthGenerator, "widthGenerator is null");
          Throw.whenNull(maximumSpeedGenerator, "maximumSpeedGenerator is null");
          Throw.whenNull(maximumAccelerationGenerator, "maximumAccelerationGenerator is null");
          Throw.whenNull(maximumDecelerationGenerator, "maximumDecelerationGenerator is null");
  
          this.gtuType = gtuType;
          this.lengthGenerator = lengthGenerator;
          this.widthGenerator = widthGenerator;
          this.maximumSpeedGenerator = maximumSpeedGenerator;
          this.maxAcceleration = maximumAccelerationGenerator;
          this.maxDeceleration = maximumDecelerationGenerator;
      }
  
      /**
       * Returns characteristics for the given GTU.
       * @return characteristics for the given GTU
       * @throws ProbabilityException in case of probability exception
      * @throws ParameterException in case of parameter exception
      */
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public GTUCharacteristics draw() throws ProbabilityException, ParameterException
     {
         Acceleration acceleration = this.maxAcceleration.draw();
         Acceleration deceleration = this.maxDeceleration.draw();
         Throw.when(acceleration.si <= 0, IllegalArgumentException.class, "Acceleration should be above 0.");
         Throw.when(deceleration.si >= 0, IllegalArgumentException.class, "Deceleration should be below 0.");
         Length length = this.lengthGenerator.draw();
         return new GTUCharacteristics(this.gtuType, length, this.widthGenerator.draw(), this.maximumSpeedGenerator.draw(),
                 acceleration, deceleration, length.multiplyBy(0.75));
     }
 
     /**
      * @return gtuType.
      */
     @SuppressWarnings("checkstyle:designforextension")
     public GTUType getGTUType()
     {
         return this.gtuType;
     }
 
     /** {@inheritDoc} */
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public String toString()
     {
         return String.format("TemplateGTUType [%s, %s, %s, %s]", this.gtuType, this.lengthGenerator, this.widthGenerator,
                 this.maximumSpeedGenerator);
     }
 
 }