/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/ElectronPhotonFourMomentumCorrection/ElectronPhotonFourMomentumCorrection/eg_resolution.h

#ifndef EG_RESOLUTION_H
#define EG_RESOLUTION_H

#include <stdlib.h>
#include <math.h>

#include "AsgTools/AsgMessaging.h"

#include "xAODEgamma/Egamma.h"
#include <memory>
#include "TAxis.h"
#include "Riostream.h"
#include "TH1.h"
#include "TFile.h"
#include "TArrayD.h"

class eg_resolution : public asg::AsgMessaging{

 public:
  eg_resolution(const std::string& configuration);
  ~eg_resolution();

  double getResolution(int particle_type, double energy, double eta, int resol_type=2) const;
  double getResolution(const xAOD::Egamma& particle, int resol_type=2) const;

 private:

  // histograms to store resolution parameters
  TH1* m_hSampling[4][3];
  TH1* m_hNoise[4][3];
  TH1* m_hConst[4][3];
  std::unique_ptr <TFile>  m_file0;
  std::unique_ptr <TFile>  m_file1;
  std::unique_ptr <TFile>  m_file2;
  std::unique_ptr <TFile>  m_file3;
  const TArrayD* m_etaBins;

};

#endif

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