/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/xAODBase/xAODBase/IParticle.h

// Dear emacs, this is -*- c++ -*-
// $Id: IParticle.h 604340 2014-07-01 04:04:52Z ssnyder $
#ifndef XAODBASE_IPARTICLE_H
#define XAODBASE_IPARTICLE_H

// ROOT include(s):
#include <TLorentzVector.h>

// EDM include(s):
#include "AthContainers/AuxElement.h"

// Local include(s):
#include "ObjectType.h"

namespace xAOD {

   class IParticle : public SG::AuxElement {

   public:
      virtual ~IParticle() {}



      virtual double           pt() const = 0;
      virtual double           eta() const = 0;
      virtual double           phi() const = 0;
      virtual double           m() const = 0;
      virtual double           e() const = 0;
      virtual double           rapidity() const = 0;

      typedef TLorentzVector FourMom_t;

      virtual const FourMom_t& p4() const = 0;



      virtual Type::ObjectType type() const = 0;



      template< class T >
      T& auxdata( const std::string& name,
                  const std::string& clsname = "" ) {

         return SG::AuxElement::auxdata< T >( name, clsname );
      }

      template< class T >
      const T& auxdata( const std::string& name,
                        const std::string& clsname = "" ) const {

         return SG::AuxElement::auxdata< T >( name, clsname );
      }

      template< class T >
      bool isAvailable( const std::string& name,
                        const std::string& clsname = "" ) const {

         return SG::AuxElement::isAvailable< T >( name, clsname );
      }

      template< class T >
      bool isAvailableWritable( const std::string& name,
                                const std::string& clsname = "" ) const {

         return SG::AuxElement::isAvailableWritable< T >( name, clsname );
      }



   protected:
      // Hide some functions from the regular xAOD users
      using SG::AuxElement::getConstStore;
      using SG::AuxElement::getStore;

      // Hide the Accessor class from the regular xAOD users
      using SG::AuxElement::Accessor;

   }; // class IParticle

} // namespace xAOD

#ifndef XAOD_STANDALONE
#include "SGTools/BaseInfo.h"
SG_BASE (xAOD::IParticle, SG::AuxElement);
#endif // not XAOD_STANDALONE

#endif // XAODBASE_IPARTICLE_H

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