/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/PhotonVertexSelection/PhotonVertexSelection/PhotonPointingTool.h

#ifndef PhotonVertexSelection_PhotonPointingTool_h
#define PhotonVertexSelection_PhotonPointingTool_h

// Framework includes
#include "AsgTools/AsgTool.h"

// Local includes
#include "PhotonVertexSelection/IPhotonPointingTool.h"

// Forward declarations
class TH1F;
namespace CP { class ShowerDepthTool; }

namespace CP {

  class PhotonPointingTool : public virtual IPhotonPointingTool,
                             public asg::AsgTool {

    ASG_TOOL_CLASS(PhotonPointingTool, CP::IPhotonPointingTool)

  private:
    CP::ShowerDepthTool *m_showerTool;

    TH1F *m_zCorrection;

    static SG::AuxElement::Decorator<float> zvertex;
    static SG::AuxElement::Decorator<float> errz;
    static SG::AuxElement::Decorator<float> HPV_zvertex;
    static SG::AuxElement::Decorator<float> HPV_errz;

  private:
    float getCorrectedZ(float zPointing, float etas2) const;
    bool m_isMC;
    std::string m_zOscFileMC, m_zOscFileData;

  public:
    PhotonPointingTool(const std::string &name);
    virtual ~PhotonPointingTool();

    
    virtual StatusCode initialize();
      

    
    StatusCode updatePointingAuxdata(const xAOD::EgammaContainer &egammas) const ;

    std::pair<float, float> getCaloPointing(const xAOD::Egamma *egamma) const ;
    
    std::pair<float, float> getConvPointing(const xAOD::Photon *photon) const ;
    
    float getCorrectedEta(const xAOD::CaloCluster &cluster, float PVz) const ;

    StatusCode correctPrimaryVertex(xAOD::Egamma &egamma, float PVz) const ;

    TLorentzVector getCorrectedLV(const xAOD::Egamma &egamma, float PVz) const ;
    
    float getCorrectedMass(const xAOD::EgammaContainer &egammas, float PVz) const;


  }; // class PhotonPointingTool

} // namespace CP


#endif // PhotonVertexSelection_PhotonPointingTool_H

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