#ifndef DETERMINE_DIFFERENCE_DRIFT_CORRECTION_05_03_2007 
#define DETERMINE_DIFFERENCE_DRIFT_CORRECTION_05_03_2007 

/**

    @class DetermDiffDrift.h
    @author Brian Magill
    @creationdate 5/3/2007
    
    @brief Determines drift correction for difference signals
    
    The drift of difference signals is assumed to be additive

*/

#include "DetermDriftAbstract.h"
#include <valarray>
// class DetermDiffDrift: public DetermDriftAbstract

 class DetermDiffDrift: public DetermDriftAbstract
    {
    
    private:

        bool hasData;        
        double slope;        
        double slopeError;
        double tref;
        double Vref;

            
    public:

    DetermDiffDrift():hasData(false), slope(0), slopeError(0), tref(0), Vref(0) { };

    DetermDiffDrift(std::valarray<double> const &time, 
                                            std::valarray<double> const &signal);
    
    ~DetermDiffDrift() { };
    
    DetermDiffDrift(DetermDiffDrift const& rhs):hasData(rhs.hasData), slope(rhs.slope), 
                                                slopeError(rhs.slopeError), tref(rhs.tref), 
                                                Vref(rhs.Vref) { };

    DetermDiffDrift const& operator = (DetermDiffDrift const& rhs)
        {
        if (this == &rhs)
            return *this;

        hasData     = rhs.hasData;        
        slope       = rhs.slope;        
        slopeError  = rhs.slopeError;
        tref        = rhs.tref;
        Vref        = rhs.Vref;
        
        return *this;
        };

    bool containsData() const {return hasData; };
            
    double getSlope() const {return slope;} ;
    
    double getSlopeError() const {return slopeError;};
    
    double getTimeRef() const {return tref;};

    double getVref() const {return Vref;};
    
    };

#endif