PadResponse.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef ALICEO2_TRD_PADRESPONSE_H_
#define ALICEO2_TRD_PADRESPONSE_H_
 
#include <array>
#include "Rtypes.h"
#include "DataFormatsTRD/Constants.h"
 
namespace o2
{
namespace trd
{
class PadResponse
{
 public:
  PadResponse() { samplePRF(); }
  ~PadResponse() = default;
  int getPRF(double, double, int, double*) const; // Get the Pad Response Function (PRF)
 
 private:
  void samplePRF();                               // Initialized the PRF
  static constexpr int mPRFbin{500};              // Number of bins for the PRF
  const float mPRFlo{-1.5};                       // Lower boundary of the PRF
  const float mPRFhi{1.5};                        // Higher boundary of the PRF
  float mPRFwid;                                  // Bin width of the sampled PRF
  int mPRFpad;                                    // Distance to next pad in PRF
  std::array<float, constants::NLAYER * mPRFbin> mPRFsmp{}; // Sampled pad response
  ClassDefNV(PadResponse, 1);
};
} // namespace trd
} // namespace o2
 
#endif