ShowerDepthUtil.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef EGAMMAUTILS_SHOWERDEPTHTOOL_H
#define EGAMMAUTILS_SHOWERDEPTHTOOL_H
 
// System include(s).
#include <memory>
#include <optional>
#include <utility>
 
#include <TH1.h>
 
namespace CP {
 
class ShowerDepthUtil {
 public:
  ShowerDepthUtil();

  float getCorrectedShowerDepthEM1(float etas1, float phi,
                                   bool isData = true) const;

  float getCorrectedShowerDepthEM2(float etas2, float phi,
                                   bool isData = true) const;

  std::pair<float, float> getCorrectedRZ(float eta, float phi,
                                         bool isData = true,
                                         int sampling = 1) const;

  float getRZCorrection(float eta, float phi, bool isData = true) const;

  float getCorrectedEtaDirection(float zvertex, float eta, float phi,
                                 bool isData = true, int sampling = 1) const;

  std::optional<float> getCaloPointingEta(float etas1, float etas2, float phi,
                                          bool isData = true) const;

  static float getShowerDepthEM1(float etas1);

  static float getShowerDepthEM2(float etas2);

  static std::pair<float, float> getRZ(float eta, int sampling);
 
  static float getEtaDirection(float zvertex, float R, float z);
 
 private:
  static std::unique_ptr<TH1> getHistoFromFile(const char* fileName,
                                               const char* histoName);
 
  std::unique_ptr<TH1> m_hData;
  std::unique_ptr<TH1> m_hMC;
};
 
}  // namespace CP
 
#endif  // ELECTRONISOLATIONSELECTION_SHOWERDEPTHTOOL_H