////////////////////////////////////////////////////////////////////////////////////
/// \class RAT::Classifiers::NearAVAngularClassifier
///
/// \brief Calculates the ratio value for use in classifying events as NearAV or not
///
/// \author name: Krish Majumdar <Krishanu.Majumdar@physics.ox.ac.uk> --contact person
///
/// REVISION HISTORY:\n
///     2012-10-22 : K Majumdar - New file \n
///     2013-01-22 : K Majumdar - revisions for pull request: removing underscores, tab/space consistency, definition of pi from CLHEP
///     2013-01-29 : K Majumdar - revisions for pull request: changed to CamelCase
///     2014-10-15 : K Majumdar - added comments for Doxygen
///     2016-06-20 : M Mottram - Use PMT selection to estimate event orientation
///
/// \details The fraction of PMT hits with PMT-centre-event angle in some small range
///          can be used as a basis for classifying an event as near-AV or not near-AV
///
////////////////////////////////////////////////////////////////////////////////////

#ifndef __RAT_Classifiers_NearAVAngularClassifier_
#define __RAT_Classifiers_NearAVAngularClassifier_

#include <string>

#include <RAT/DS/ClassifierResult.hh>
#include <RAT/Classifier.hh>

namespace RAT
{
  namespace DS
  {
    class Entry;
    class EV;
  }

  namespace Classifiers
  {
    class NearAVAngularClassifier : public Classifier
    {

    public:
      /// Get the method's name
      ///
      /// @return the methods name
      virtual std::string GetName() const {return NearAVAngularClassifier::Name();}
      /// @copydoc GetName()
      static std::string Name() {return std::string("nearAVAngular");}
      void Initialise(const std::string&) {}
      /// Load the table from the database
      void BeginOfRun(DS::Run&);
      void EndOfRun(DS::Run&);
      /// Calculate and return the classification result
      virtual DS::ClassifierResult GetClassification();

    private:
      size_t fNhitsCut; ///< minimum Nhits required to reliably calculate ratio value
      double fDipRegionStart; ///< lower limit of the dip region for ratio calculation
      double fDipRegionEnd; ///< upper limit of the dip region for ratio calculation
    };
  }  // End of namespace Classifiers
}  // End of namespace RAT

#endif