MSCFModel_IDM.h

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/****************************************************************************/
// The Intellignet Driver Model (IDM) car-following model
/****************************************************************************/
// SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
// Copyright 2001-2010 DLR (http://www.dlr.de/) and contributors
/****************************************************************************/
//
//   This program is free software; you can redistribute it and/or modify
//   it under the terms of the GNU General Public License as published by
//   the Free Software Foundation; either version 2 of the License, or
//   (at your option) any later version.
//
/****************************************************************************/
#ifndef MSCFMODEL_IDM_H
#define MSCFMODEL_IDM_H

// ===========================================================================
// included modules
// ===========================================================================
#ifdef _MSC_VER
#include <windows_config.h>
#else
#include <config.h>
#endif

#include <microsim/MSCFModel.h>
#include <microsim/MSLane.h>
#include <microsim/MSVehicle.h>
#include <microsim/MSVehicleType.h>
#include <utils/xml/SUMOXMLDefinitions.h>


// ===========================================================================
// class definitions
// ===========================================================================
class MSCFModel_IDM : public MSCFModel {
public:
    MSCFModel_IDM(const MSVehicleType* vtype, SUMOReal accel, SUMOReal decel,
                  SUMOReal timeHeadWay, SUMOReal mingap, SUMOReal tau) throw();


    ~MSCFModel_IDM() throw();



    SUMOReal moveHelper(MSVehicle * const veh, const MSLane * const lane, SUMOReal vPos) const throw();


    SUMOReal ffeV(const MSVehicle * const veh, SUMOReal speed, SUMOReal gap2pred, SUMOReal predSpeed) const throw();


    SUMOReal ffeV(const MSVehicle * const veh, SUMOReal gap2pred, SUMOReal predSpeed) const throw();


    SUMOReal ffeV(const MSVehicle * const veh, const MSVehicle * const pred) const throw();


    SUMOReal ffeS(const MSVehicle * const veh, SUMOReal gap2pred) const throw();


    SUMOReal interactionGap(const MSVehicle * const , SUMOReal vL) const throw();


    bool hasSafeGap(SUMOReal speed, SUMOReal gap, SUMOReal predSpeed, SUMOReal laneMaxSpeed) const throw();


    SUMOReal getMaxAccel(SUMOReal v) const throw() {
        return myAccel;
    }


    int getModelID() const throw() {
        return SUMO_TAG_CF_IDM;
    }


    SUMOReal getTau() const throw() {
        return myTau;
    }




private:
    SUMOReal _updateSpeed(SUMOReal gap2pred, SUMOReal mySpeed, SUMOReal predSpeed, SUMOReal desSpeed) const throw();

    SUMOReal desiredSpeed(const MSVehicle * const veh) const throw() {
        return MIN2(myType->getMaxSpeed(), veh->getLane().getMaxSpeed());
    }


private:

    SUMOReal myAccel;

    SUMOReal myTimeHeadWay;

    SUMOReal myMinSpace;

    SUMOReal myTau;

};

#endif  /* MSCFMODEL_IDM_H */