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IKinematic.h

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//===========================================================
// Interface Base class needed for function objects
//===========================================================

#ifndef ATLFAST_IKINEMATIC_H
#define ATLFAST_IKINEMATIC_H
//#include "GaudiKernel/MsgStream.h"
class MsgStream;

class HepLorentzVector;

namespace Atlfast {
  class IKinematic;
  MsgStream& operator << ( MsgStream&, const IKinematic& );
  MsgStream& operator << ( MsgStream&, const IKinematic * const );

  class IKinematic
    {
      
    public:
      
      virtual HepLorentzVector  momentum() const  = 0 ;
      virtual double  eta() const     = 0 ;
      virtual double  phi() const     = 0 ;    
      virtual double  pT()  const     = 0 ;
      virtual double  eT()  const     = 0 ;
      virtual double  mT()  const     = 0 ;
      
    };
  
}
#endif

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