HistoInputBase.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef JETTOOLHELPERS_HISTOINPUTBASE_H
#define JETTOOLHELPERS_HISTOINPUTBASE_H
 
 
#include "JetAnalysisInterfaces/IVarTool.h"
#include "AsgTools/AsgTool.h"
#include "AsgTools/PropertyWrapper.h"
 
#include "TH1.h" //unique_ptr member, and d'tor defined here
#include <string>
#include <memory>
 
class TAxis;
 
namespace JetHelper {

 
class HistoInputBase :public asg::AsgTool, virtual public IVarTool
{
    ASG_TOOL_CLASS(HistoInputBase, IVarTool)
 
    public:
        HistoInputBase(const std::string& myname);
        virtual ~HistoInputBase() {};
        std::string getFileName() const { return m_fileName; };
        std::string getHistName() const { return m_histName; };
        TH1& getHistogram() { return *m_hist; };
 
    private:
        Gaudi::Property< std::string > m_fileName { this, "inputfile", "JetUncertainties/CalibArea-08/rel21/Summer2019/R4_AllComponents.root", "File containing histograms" };
        Gaudi::Property< std::string > m_histName { this, "histName", "Zjet_MuStat3_AntiKt4EMPFlow", "name of histrogram" };
 
    protected:
        std::unique_ptr<TH1> m_hist ATLAS_THREAD_SAFE {};
        bool readHistoFromFile();
        double enforceAxisRange(const TAxis& axis, const double inputValue) const;
        double readFromHisto(const double X, const double Y=0, const double Z=0) const;
        // Interpolation strategies
        Gaudi::Property<std::string> m_interpStr {this, "InterpType", "Full", "Interpolation to run: Full/OnlyX/OnlyY/None"};
        enum class InterpType
        {
            UNKNOWN=0,  // Unknown/unset/etc
            Full,       // Full interpolation
            None,       // No interpolation
            OnlyX,      // Interpolate only in the x dimension
            OnlyY,       // Interpolate only in the y dimension
            OnlyZ       // Interpolate only in the z dimension
        };
        InterpType m_interpNum{InterpType::UNKNOWN};
    
};
} // namespace JetHelper
#endif