Generic1D.h

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#ifndef GAUDISVC_GENERIC1D_H
#define GAUDISVC_GENERIC1D_H 1
#include "AIDA_visibility_hack.h"

#include <stdexcept>
#include <memory>
#include "Axis.h"
#include "Annotation.h"
#include "GaudiKernel/HistogramBase.h"
#include "AIDA/IProfile1D.h"
#include "TFile.h"

/*
 *    Gaudi namespace
 */
namespace Gaudi {

  template <class INTERFACE, class IMPLEMENTATION>
  class GAUDI_API Generic1D : virtual public INTERFACE, virtual public HistogramBase {
  public:
    typedef Generic1D<INTERFACE,IMPLEMENTATION> Base;
    Generic1D() = default;
  protected:
    Generic1D(IMPLEMENTATION* p) : m_rep(p) { }
  public:
    ~Generic1D() override = default ;
    virtual const std::string& userLevelClassType() const { return m_classType;                 }
    void* cast(const std::string& cl) const override;
    TObject* representation() const                      { return m_rep.get();                 }
    void adoptRepresentation(TObject*rep) override;
    std::string title() const override                   { return m_annotation.value("Title"); }
    bool setTitle(const std::string & title) override;
    std::string name() const                             { return m_annotation.value("Name");  }
    bool setName( const std::string& newName );
    AIDA::IAnnotation & annotation() override            { return m_annotation;                }
    const AIDA::IAnnotation & annotation() const override { return m_annotation;                }
    Axis & axis ()                                       { return m_axis;                      }
    const Axis & axis () const                           { return m_axis;                      }

    int entries() const override                  { return m_rep->GetEntries();           }
    int allEntries() const override               { return m_rep->GetEntries();           }
    int extraEntries() const override;
    int  binEntries ( int index ) const override;
    // spread
    virtual double binRms(int index) const;
    double sumBinHeights() const override         { return m_rep->GetSumOfWeights();            }
    double sumAllBinHeights() const override      { return m_rep->GetSum();                     }
    double  sumExtraBinHeights () const override  { return  sumAllBinHeights()-sumBinHeights(); }
    double minBinHeight() const override         { return m_rep->GetMinimum();                 }
    double maxBinHeight() const override          { return m_rep->GetMaximum();                 }

    virtual double equivalentBinEntries (  ) const ;
    virtual bool scale( double scaleFactor ) ;
    bool reset() override;
    bool add(const INTERFACE & profile) override;
    virtual int rIndex(int index) const { return m_axis.rIndex(index);}
    double  binMean(int index) const override;
    double  binHeight(int index) const override;
    double  binError(int index) const override;
    double  mean() const  override                { return m_rep->GetMean();                    }
    double  rms () const  override                {  return m_rep->GetRMS();                    }
    int  coordToIndex ( double coord ) const  override{ return axis().coordToIndex(coord);}
    int  dimension (  ) const  override { return 1; }
    std::ostream& print( std::ostream& s ) const override;
    std::ostream& write( std::ostream& s ) const override;
    int write( const char* file_name ) const override;

  protected:
    Axis                     m_axis;
    mutable AIDA::Annotation m_annotation;
    std::unique_ptr<IMPLEMENTATION>   m_rep;
    // class type
    std::string              m_classType;
    // cache sumEntries (allEntries)   when setting contents since Root can't compute by himself
    int                      m_sumEntries;
  }; // end class Generic1D

  template <class INTERFACE, class IMPLEMENTATION>
  bool Generic1D<INTERFACE,IMPLEMENTATION>::setTitle(const std::string & title)  {
    m_rep->SetTitle(title.c_str());
    if ( !annotation().addItem( "Title", title ) )
      m_annotation.setValue( "Title" , title );
    if ( !annotation().addItem( "title", title ) )
      annotation().setValue( "title", title );
    return true;
  }

  template <class INTERFACE, class IMPLEMENTATION>
  bool Generic1D<INTERFACE,IMPLEMENTATION>::setName( const std::string& newName ) {
    m_rep->SetName(newName.c_str());
    m_annotation.setValue( "Name", newName );
    return true;
  }

  template <class INTERFACE, class IMPLEMENTATION>
  double Generic1D<INTERFACE,IMPLEMENTATION>::binRms(int index) const {
    return m_rep->GetBinError ( rIndex(index) );
  }

  template <class INTERFACE, class IMPLEMENTATION>
  double Generic1D<INTERFACE,IMPLEMENTATION>::binMean ( int index ) const  {
    return m_rep->GetBinCenter ( rIndex(index) );
  }

  template <class INTERFACE, class IMPLEMENTATION>
  double Generic1D<INTERFACE,IMPLEMENTATION>::binHeight ( int index ) const  {
    return m_rep->GetBinContent ( rIndex(index) );
  }

  template <class INTERFACE, class IMPLEMENTATION>
  double Generic1D<INTERFACE,IMPLEMENTATION>::binError ( int index ) const  {
    return m_rep->GetBinError ( rIndex(index) );
  }

  template <class INTERFACE, class IMPLEMENTATION>
  int Generic1D<INTERFACE,IMPLEMENTATION>::extraEntries() const {
    return binEntries(AIDA::IAxis::UNDERFLOW_BIN) +
          binEntries(AIDA::IAxis::OVERFLOW_BIN);
  }
  template <class INTERFACE, class IMPLEMENTATION>
  bool Generic1D<INTERFACE,IMPLEMENTATION>::reset()   {
    m_sumEntries = 0;
    m_rep->Reset();
    return true;
  }

  template <class INTERFACE, class IMPLEMENTATION>
  double Generic1D<INTERFACE,IMPLEMENTATION>::equivalentBinEntries() const  {
    if (sumBinHeights() <= 0) return 0;
    Stat_t stats[11];   // cover up to 3D...
    m_rep->GetStats(stats);
    return stats[0]*stats[0]/stats[1];
  }

  template <class INTERFACE, class IMPLEMENTATION>
  bool Generic1D<INTERFACE,IMPLEMENTATION>::scale(double scaleFactor)   {
    m_rep->Scale ( scaleFactor );
    return true;
  }

  template <class INTERFACE, class IMPLEMENTATION>
  bool Generic1D<INTERFACE,IMPLEMENTATION>::add(const INTERFACE & h)  {
    const Generic1D<INTERFACE,IMPLEMENTATION>* p =
      dynamic_cast<const Generic1D<INTERFACE,IMPLEMENTATION>*>(&h);
    if ( p )  {
      m_rep->Add(p->m_rep.get());
      return true;
    }
    throw std::runtime_error("Cannot add profile histograms of different implementations.");
  }

  template <class INTERFACE, class IMPLEMENTATION>
  std::ostream& Generic1D<INTERFACE,IMPLEMENTATION>::print( std::ostream& s ) const    {
    m_rep->Print("all");
    return s;
  }

  template <class INTERFACE, class IMPLEMENTATION>
  std::ostream& Generic1D<INTERFACE,IMPLEMENTATION>::write( std::ostream& s ) const  {
    s << "\n1D Histogram Table: " << std::endl;
    s << "Bin, Height, Error "  << std::endl;
    for( int i = 0; i < axis().bins(); ++i )
      s << binMean( i ) << ", "
        << binHeight( i ) << ", "
        << binError ( i ) << std::endl;
    s << std::endl;
    return s;
  }

  template <class INTERFACE, class IMPLEMENTATION>
  int Generic1D<INTERFACE,IMPLEMENTATION>::write( const char* file_name ) const
  {
    TFile *f = TFile::Open(file_name,"RECREATE");
    Int_t nbytes = m_rep->Write();
    f->Close();
    return nbytes;
  }
} // end namespace AIDA

#endif // AIDAROOT_GENERIC1D_H