TOPCalEventT0Offset.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 <TObject.h>
#include <map>
#include <vector>
#include <framework/gearbox/Const.h>
#include <framework/logging/Logger.h>
 
namespace Belle2 {
  class TOPCalEventT0Offset: public TObject {
 
  public:
 
    struct OffsetData {
      float offset = 0; 
      float sigma = 0;  
      Const::EDetector component = Const::invalidDetector; 
      OffsetData()
      {}
 
      OffsetData(double T0, double sig, Const::EDetector det): offset(T0), sigma(sig), component(det)
      {}
    };
 
    TOPCalEventT0Offset()
    {}
 
    void set(Const::EDetector detector, double offset, double sigma)
    {
      if (sigma > 0) {
        m_data.push_back(OffsetData(offset, sigma, detector));
      } else {
        B2ERROR("TOPCalEventT0Offset::set: time resolution must be a positive number. Entry ignored"
                << LogVar("detector component", detector));
      }
    }
 
    const OffsetData& get(Const::EDetector detector) const
    {
      if (m_calibrations.empty()) set();
      return m_calibrations[detector];
    }
 
    bool isAvailable(Const::EDetector detector) const
    {
      if (m_calibrations.empty()) set();
      return (m_calibrations[detector].sigma > 0);
    }
 
    bool isEmpty() const {return m_data.empty();}
 
  private:
 
    void set() const
    {
      for (const auto& data : m_data) m_calibrations[data.component] = data;
    }
 
    std::vector<OffsetData> m_data; 
    mutable std::map<Const::EDetector, OffsetData> m_calibrations; 
 
    ClassDef(TOPCalEventT0Offset, 1); 
  };
 
}