/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2005,2006,2007 INRIA

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as 

 * published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Federico Maguolo <maguolof@dei.unipd.it>

 */

#ifndef PROPAGATION_COMP_MODEL_H

#define PROPAGATION_COMP_MODEL_H

#include "ns3/nstime.h"

#include "propagation-loss-model.h"

namespace ns3 {

/**

 * \brief a Composite propagation loss model

 *

 * This model is use to compute the receivng power

 * using more than one propagation loss model (e.g. distance loss 

 * and jakes).

 *

 * The received power is computed considering the cascade of the models

 */

class CompositePropagationLossModel : public PropagationLossModel {

public:

  static TypeId GetTypeId (void);

  CompositePropagationLossModel ();

  virtual ~CompositePropagationLossModel ();

  virtual double GetLoss (Ptr<MobilityModel> a,

			  Ptr<MobilityModel> b) const;

  /**

   * \param pl the propagation loss model to add

   *

   * Insert a propagation loss model to the composite.

   */

  void AddPropagationLossModel (Ptr<PropagationLossModel> pl);

protected:

  virtual void AddDefaults (void);

private:

  typedef std::vector<Ptr<PropagationLossModel> > PropagationModelList;

  PropagationModelList m_propagationModels;

};

} // namespace ns3

#endif /* PROPAGATION_COMP_MODEL_H */