ROptFitter.h

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#ifndef _LDFFinderKG_ROptFitter_h_
#define _LDFFinderKG_ROptFitter_h_

#include "LDF.h"
#include <Minuit2/FCNBase.h>
#include <vector>


namespace LDFFinderKG {

  class ROptFitter : public ROOT::Minuit2::FCNBase {

  public:
    ROptFitter(const LDF& ldfFunction,
               const std::vector<double>& ldfParameters,
               const bool verbose)
      : fLDFFunction(ldfFunction), fLDFParameters(ldfParameters), fVerbose(verbose) { }

    bool GetResult(double& rOpt) const;

    void
    PushBack(const double beta, const double showerSize)
    {
      fBeta.push_back(beta);
      fShowerSize.push_back(showerSize);
    }

    const std::vector<double>& GetBetaVector() const
    { return fBeta; }

    const std::vector<double>& GetShowerSizeVector() const
    { return fShowerSize; }

  protected:
    double operator()(const std::vector<double>& pars) const;

    double Up() const { return 1; }

    const LDF& fLDFFunction;
    mutable std::vector<double> fLDFParameters;
    bool fVerbose;
    std::vector<double> fBeta;
    std::vector<double> fShowerSize;

  };

}


#endif