/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/ElectronPhotonSelectorTools/ElectronPhotonSelectorTools/IEGammaAmbiguityTool.h

// Dear emacs, this is -*-c++-*-

#ifndef __IEGammaAmbiguityTool__
#define __IEGammaAmbiguityTool__

// Include the interfaces
#include "AsgTools/IAsgTool.h"

// Include the return object
// #include "PATCore/TAccept.h"

// Forward declarations
#include "xAODCaloEvent/CaloClusterFwd.h"
#include "xAODTracking/VertexFwd.h"
#include "xAODTracking/TrackParticleFwd.h"
#include "xAODEgamma/EgammaFwd.h"
#include "xAODEgamma/EgammaContainerFwd.h"

//This will need to be copied over to EgammaEnums.h
//under xAODEgamma
//Plus Set/Get true Accessor methods when we have 
//finalise the design.
namespace xAOD {
  namespace AmbiguityTool {
    enum AmbiguityType {
      electron = 0,
      ambiguousTrackEoverPBetterThanVertexEoverP=1,
      ambiguousTrackLowPt=2,
      ambiguousTrackLowEoverP=3,
      ambiguousTrackNoPixel =4,
      ambiguousVertexEoverPBetterThanTrackEoverP=5,
      photon=6,
      unknown=7
    };
  }
}



class IEGammaAmbiguityTool : virtual public asg::IAsgTool
{
  ASG_TOOL_INTERFACE(IEGammaAmbiguityTool)

public:

  virtual ~IEGammaAmbiguityTool() {};

  virtual unsigned int ambiguityResolve(const xAOD::CaloCluster* cluster,
                                        const xAOD::Vertex* vx,
                                        const xAOD::TrackParticle* tp, xAOD::AmbiguityTool::AmbiguityType& type) const = 0;

  virtual unsigned int ambiguityResolve(const xAOD::CaloCluster* cluster,
                                        const xAOD::Vertex* vx,
                                        const xAOD::TrackParticle* tp) const = 0;

  virtual unsigned int ambiguityResolve(const xAOD::Egamma& egamma) const = 0;

  virtual bool accept( const xAOD::Egamma& egamma, bool acceptAmbiguous = true) const = 0;
  
  virtual const xAOD::Egamma* getOverlappingObject( const xAOD::Egamma& egamma,const xAOD::EgammaContainer* egammaContainer ) const = 0;

}; // End: class definition


#endif

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