MSCFModel_IDM.h

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.org/sumo
// Copyright (C) 2001-2017 German Aerospace Center (DLR) and others.
/****************************************************************************/
//
//   This program and the accompanying materials
//   are made available under the terms of the Eclipse Public License v2.0
//   which accompanies this distribution, and is available at
//   http://www.eclipse.org/legal/epl-v20.html
//
/****************************************************************************/
// The Intelligent Driver Model (IDM) car-following model
/****************************************************************************/
#ifndef MSCFMODEL_IDM_H
#define MSCFMODEL_IDM_H

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

#include "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, double accel, double decel, double emergencyDecel, double apparentDecel,
                  double headwayTime, double delta, double internalStepping);


    MSCFModel_IDM(const MSVehicleType* vtype, double accel, double decel, double emergencyDecel, double apparentDecel,
                  double headwayTime, double adaptationFactor, double adaptationTime,
                  double internalStepping);


    ~MSCFModel_IDM();



    double moveHelper(MSVehicle* const veh, double vPos) const;


    double followSpeed(const MSVehicle* const veh, double speed, double gap2pred, double predSpeed, double predMaxDecel) const;


    double stopSpeed(const MSVehicle* const veh, const double speed, double gap2pred) const;


    double interactionGap(const MSVehicle* const , double vL) const;


    int getModelID() const {
        return myAdaptationFactor == 1. ? SUMO_TAG_CF_IDM : SUMO_TAG_CF_IDMM;
    }



    MSCFModel* duplicate(const MSVehicleType* vtype) const;


    VehicleVariables* createVehicleVariables() const {
        if (myAdaptationFactor != 1.) {
            return new VehicleVariables();
        }
        return 0;
    }


private:
    class VehicleVariables : public MSCFModel::VehicleVariables {
    public:
        VehicleVariables() : levelOfService(1.) {}
        double levelOfService;
    };


private:
    double _v(const MSVehicle* const veh, const double gap2pred, const double mySpeed,
              const double predSpeed, const double desSpeed, const bool respectMinGap = true) const;


private:
    const double myDelta;

    const double myAdaptationFactor;

    const double myAdaptationTime;

    const int myIterations;

    const double myTwoSqrtAccelDecel;

private:
    MSCFModel_IDM& operator=(const MSCFModel_IDM& s);
};

#endif /* MSCFMODEL_IDM_H */