/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/xAODTracking/xAODTracking/versions/NeutralParticle_v1.h

// Dear emacs, this is -*- c++ -*-
// $Id: NeutralParticle_v1.h 573493 2013-12-03 13:05:51Z emoyse $
#ifndef XAODTRACKING_VERSIONS_NEUTRALPARTICLE_V1_H
#define XAODTRACKING_VERSIONS_NEUTRALPARTICLE_V1_H

// Athena includes
#include "AthLinks/ElementLink.h"
#include "AthContainers/DataVector.h"

// xAOD include(s):
#include "xAODBase/IParticle.h"
#include "xAODTracking/TrackingPrimitives.h" 
#include "xAODTracking/VertexContainerFwd.h" 

#include <bitset>
#include <stdint.h>

#ifndef XAOD_STANDALONE
#ifndef XAOD_MANACORE
#include "TrkNeutralParameters/NeutralParameters.h"
#endif // not XAOD_MANACORE
#endif // not XAOD_STANDALONE

namespace xAOD {
  
  class NeutralParticle_v1 : public IParticle {

    public:

      NeutralParticle_v1();
      ~NeutralParticle_v1();
    NeutralParticle_v1(const NeutralParticle_v1& o );
    NeutralParticle_v1& operator=(const NeutralParticle_v1& tp );
      
      virtual double           pt() const;
      virtual double           eta() const;
      virtual double           phi() const;
      virtual double           m() const;
      virtual double           e() const;
      virtual double           rapidity() const;
      
      typedef IParticle::FourMom_t FourMom_t;
      
      virtual const FourMom_t& p4() const;
      
      virtual Type::ObjectType type() const;
      
      
      float d0() const;
      float z0() const;
      float phi0() const;
      float theta() const;
      float oneOverP() const;
      const DefiningParameters_t& definingParameters() const;
      const ParametersCovMatrix_t& definingParametersCovMatrix() const;  
      const std::vector<float>& definingParametersCovMatrixVec() const;
      
      void setDefiningParameters(float d0, float z0, float phi0, float theta, float qOverP);
      void setDefiningParametersCovMatrix(const ParametersCovMatrix_t& cov);
      void setDefiningParametersCovMatrixVec(const std::vector<float>& cov);
      
      float vx() const;
      float vy() const;
      float vz() const;
      void setParametersOrigin(float x, float y, float z);

#if ( ! defined(XAOD_STANDALONE) ) && ( ! defined(XAOD_MANACORE) )
      const Trk::NeutralPerigee& perigeeParameters() const;
#endif // not XAOD_STANDALONE and not XAOD_MANACORE

      // /// @brief Returns a link (which can be invalid) to the xAOD::Vertex associated with this NeutralParticle.
      // const ElementLink< VertexContainer >& vertex() const;
      // /// @brief Set the link to the vertex
      //  void setVertex(const ElementLink< VertexContainer >& vertex);

    private:
      mutable FourMom_t m_p4;
      mutable bool m_p4Cached;

      mutable bool m_perigeeCached;

#if ( ! defined(XAOD_STANDALONE) ) && ( ! defined(XAOD_MANACORE) ) && ( ! defined(__GCCXML__) ) && !defined(__CLING__)
      mutable Trk::NeutralPerigee* m_perigeeParameters;
#endif // not XAOD_STANDALONE and not XAOD_MANACORE and not __GCCXML__

    }; // class NeutralParticle_v1

} // namespace xAOD


#endif // XAODTRACKING_VERSIONS_NEUTRALPARTICLE_V1_H

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