StEEmcPair.h

#ifndef __StEEmcPair_h__
#define __StEEmcPair_h__

#include "TObject.h"
#include "StEEmcPool/StEEmcPointMaker/StEEmcPoint.h"
#include "TVector3.h"
#include <vector>

class StEEmcPair : public TObject {

 public:

  StEEmcPair();
  StEEmcPair(const StEEmcPoint &p1, const StEEmcPoint &p2);
  StEEmcPair(const StEEmcPoint &p1, const StEEmcPoint &p2, const TVector3 &vertex );
  StEEmcPair(const StEEmcPoint &p1, const StEEmcPoint &p2, const TVector3 &vertex1, const TVector3 &vertex2 );
  virtual ~StEEmcPair(){ /* nada */ };

  StEEmcPair( const StEEmcPair &old );

  const StEEmcPoint &point(Int_t index) const { return mPoint[index]; } 

  Float_t mass() const;
  Float_t energy() const;
  Float_t zgg() const;
  Float_t phigg() const;
  Float_t pt() const;
  const TVector3 &momentum() const;
  const TVector3 &vertex() const;

  void print() const;

 private:
 protected:

  void Kinematics();

  Float_t  mMass;     
  Float_t  mEnergy;   
  Float_t  mZgg;      
  Float_t  mPhigg;    
  TVector3 mMomentum; 
  TVector3 mVertex1;  
  TVector3 mVertex2;  
  TVector3 mVertex;   
  StEEmcPoint mPoint[2]; 
  ClassDef(StEEmcPair,1);

};

inline Float_t StEEmcPair::mass() const { return mMass; }
inline Float_t StEEmcPair::energy() const { return mEnergy; }
inline Float_t StEEmcPair::zgg() const { return mZgg; }
inline Float_t StEEmcPair::phigg() const { return mPhigg; }
inline Float_t StEEmcPair::pt() const { return mMomentum.Perp(); }
inline const TVector3 &StEEmcPair::momentum() const { return mMomentum; }
inline const TVector3 &StEEmcPair::vertex() const { return mVertex; }

typedef std::vector< StEEmcPair > StEEmcPairVec_t;

#endif