NhsModelWithBackwardSolver.hpp

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*/

#ifndef NHSMODELWITHBACKWARDSOLVER_HPP_
#define NHSMODELWITHBACKWARDSOLVER_HPP_

#include "NhsContractionModel.hpp"
#include "TimeStepper.hpp"
#include <cmath>


class NhsModelWithBackwardSolver : public NhsContractionModel
{
private:
    static const double mTolerance;

    double mDt;

    double ImplicitSolveForQ();

    void CalculateCaTropAndZDerivatives(double calciumTroponin, double z, double Q, double& dCaTrop, double& dz);

    void CalculateBackwardEulerResidual(double calciumTroponin, double z, double Q,
                                        double& residualComponent1, double& residualComponent2);

public :
    NhsModelWithBackwardSolver();


    void RunDoNotUpdate(double startTime, double endTime, double timestep);



    double GetNextActiveTension();

    void RunAndUpdate(double startTime, double endTime, double timestep);
};

#endif /*NHSMODELWITHBACKWARDSOLVER_HPP_*/