CDCDedxInjectionTime.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#pragma once
 
#include <framework/logging/Logger.h>
 
#include <TObject.h>
 
namespace Belle2 {

 
  class CDCDedxInjectionTime: public TObject {
 
  public:

    CDCDedxInjectionTime(): m_injectionvar() {};

    explicit CDCDedxInjectionTime(const std::vector<std::vector<double>>& vinjcalib): m_injectionvar(vinjcalib) {};

    ~CDCDedxInjectionTime() {};
 

    void printCorrection(const std::string& svar, const std::string& sfx) const;
 

    const std::vector<std::vector<double>>& getConstVector() const
    {
      return m_injectionvar;
    };

    const std::vector<double>& getTimeVector(unsigned int ring) const
    {
      if (ring > 1) B2ERROR("wrong index for injection ring ");
      if (ring * 3 >= m_injectionvar.size()) B2FATAL("CDCDedxInjectionTime: vector-of-vectors too short");
      return m_injectionvar[ring * 3];
    };

    const std::vector<double>& getMeanVector(unsigned int ring) const
    {
      if (ring > 1) B2ERROR("wrong index for injection ring ");
      if (ring * 3 + 1 >= m_injectionvar.size()) B2FATAL("CDCDedxInjectionTime: vector-of-vectors too short");
      return m_injectionvar[ring * 3 + 1];
    };

    const std::vector<double>& getResoVector(unsigned int ring) const
    {
      if (ring > 1) B2ERROR("wrong index for injection ring ");
      if (ring * 3 + 2 >= m_injectionvar.size()) B2FATAL("CDCDedxInjectionTime: vector-of-vectors too short");
      return m_injectionvar[ring * 3 + 2];
    };

    int getTimeBin(const std::vector<unsigned int>& array, unsigned int value) const
    {
      int nabove = array.size() + 1;
      int nbelow = 0;
 
      while (nabove - nbelow > 1) {
        int middle = (nabove + nbelow) / 2;
 
        if (value == array[middle - 1]) return middle - 1;
        if (value < array[middle - 1])  nabove = middle;
        else  nbelow = middle;
      }
 
      return nbelow - 1;
    }

    double getCorrection(const std::string& svar, unsigned int ring, unsigned int time) const;
 
  private:

    double getSafely(unsigned int iv, int k) const
    {
      const auto& vector = m_injectionvar[iv]; // assuming iv is valid index and vector not empty
      int last = vector.size() - 1;
      if (k < 0) k = 0;
      else if (k > last) k = last;
      return vector[k];
    }
 

    std::vector<std::vector<double>> m_injectionvar; 
    ClassDef(CDCDedxInjectionTime, 1); 
 
  };

} // end namespace Belle2