TrackSmearingTool.h

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#pragma once
 
//------------------//
//     C++          //
//------------------//
#include <iostream>
#include <random>
#include <memory>
 
//------------------//
//    hpstr         //
//------------------//
 
#include "Track.h"
 
class TFile;
class TH1D;
 
class TrackSmearingTool {
  
 public : 
  
  // The seed needs to be set accordingly for each instance / job of the smearing tool
  TrackSmearingTool(const std::string& smearingfile,
                    const bool relSmearing = true,
                    const int seed = 42,
                    const std::string& tracks = "KalmanFullTracks");  
  
  double smearTrackP(const Track& trk);
  void updateWithSmearP(Track& trk);
  
 private:
  
  //Random engine
  std::shared_ptr<std::default_random_engine> generator_;
 
  // General Normal distributions
 
  std::shared_ptr<std::normal_distribution<double>> normal_;
  
  std::shared_ptr<TFile> smearingfile_;
  
  //Smearing terms
  TH1D* smearing_histo_top_;
  TH1D* smearing_histo_bot_;
  
  // debug
  bool debug_{false};
  bool relSmearing_{false};
  
};
class TrackSmearingTool {…};