TFCS1DFunction.h

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ISF_FASTCALOSIMEVENT_TFCS1DFunction_h
#define ISF_FASTCALOSIMEVENT_TFCS1DFunction_h
 
// STL includes
#include <vector>
 
#include "CxxUtils/checker_macros.h"
 
#include "ISF_FastCaloSimEvent/TFCSFunction.h"
 
class TH1;
 
class TFCS1DFunction : public TFCSFunction {
public:
  TFCS1DFunction(){};
  ~TFCS1DFunction(){};
 
  virtual int ndim() const { return 1; };

  virtual void rnd_to_fct(float value[], const float rnd[]) const;

  virtual double rnd_to_fct(double rnd) const = 0;

  virtual bool operator==(const TFCS1DFunction &ref) const {
    return this == &ref;
  };
 
  static double get_maxdev(TH1 *, TH1 *);
 
  static double CheckAndIntegrate1DHistogram(const TH1 *hist,
                                             std::vector<double> &integral_vec,
                                             int &first, int &last);
 
  static TH1 *generate_histogram_random_slope
  ATLAS_NOT_THREAD_SAFE(int nbinsx = 50, double xmin = 0, double xmax = 1,
                        double zerothreshold = 0.1);
  static TH1 *generate_histogram_random_gauss ATLAS_NOT_THREAD_SAFE(
      int nbinsx = 50, int ntoy = 100000, double xmin = 1, double xmax = 5,
      double xpeak = 1.5, double sigma = 0.6);
  static void unit_test ATLAS_NOT_THREAD_SAFE(TH1 *hist, TFCS1DFunction *rtof,
                                              int nrnd = 1000000,
                                              TH1 *histfine = nullptr);
 
private:
  ClassDef(TFCS1DFunction, 2) // TFCS1DFunction
};
 
#endif