BaseTRTPIDCalculator.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/

// TRT_ElectronPidTool.h, (c) ATLAS Detector software
 
#ifndef INDETTRT_BASETRTPIDCALCULATOR_H
#define INDETTRT_BASETRTPIDCALCULATOR_H
 
#include "AthenaBaseComps/AthAlgTool.h"
 
#include <vector>
#include <string>
 
namespace InDet
{
 class BaseTRTPIDCalculator {
 public:
  //Class to encode those aspects of the ToT and HT calculator that they have in common
  AthAlgTool & parent;
  const char * my_name;
  int BLOB_SIZE;
  unsigned char * Blob;
 
  float & UpperLimit;
  float & LowerLimit;
 
  bool HasBeenInitialized;
 
  static const int SIZE_OF_HEADER = 12;
  
  // | 
  // | The following are all the major offsets from the blob start:
  
  //versioning check constants
  int CurrentVersion;
  static const int _Version    = 0;
  static const int _Day   = 1;
  static const int _Month = 2;
  static const int _Year  = 3;
  
  static const int OFF_UpperLim = 4;
  static const int OFF_LowerLim = 8;
 
 BaseTRTPIDCalculator(AthAlgTool & p, int size, const char * name):parent(p),
    my_name(name),
    BLOB_SIZE(size),
    Blob(new unsigned char[size]),
    UpperLimit( * (reinterpret_cast<float*>( Blob + OFF_UpperLim) ) ),
    LowerLimit( * (reinterpret_cast<float*>( Blob + OFF_LowerLim) ) ),
    HasBeenInitialized(0)
      {
    CurrentVersion = -1;
      }
  
  ~BaseTRTPIDCalculator(){
    delete [] Blob;
  }
 
   BaseTRTPIDCalculator (const BaseTRTPIDCalculator&) = delete;
   BaseTRTPIDCalculator& operator= (const BaseTRTPIDCalculator&) = delete;
 
  // set constants to hard coded defaults
  virtual void setDefaultCalibrationConstants()=0;
 
 public:
  void checkInitialization();
 
  // Fill the data blob from a given pointer
  bool FillBlob(const unsigned char*);      
 
  // Limit the allowed PID value to lie between a lower and an upper limt
   float Limit(float prob) const;      
 
 };
} 
 
#endif