LCFourVector.h

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// -*- C++ -*-
#ifndef UTIL_LCFourVector_H
#define UTIL_LCFourVector_H 1

#include "EVENT/LCObject.h"
#include "CLHEP/Vector/LorentzVector.h"


// CLHEP 1.9 and higher introduce a namespace:
namespace CLHEP{}  
using namespace CLHEP ;


namespace UTIL {
  
  
  template<class TT> 
  class LCFourVector :  public HepLorentzVector {

  protected: 
    const TT* _lcObj = nullptr ;
    
  public: 
    virtual ~LCFourVector() { /*no_op*/; } 
    
    LCFourVector(const LCFourVector& ) = default ;
    LCFourVector& operator=(const LCFourVector& ) = default ;

    inline LCFourVector( const TT* lcObj) : _lcObj(lcObj) {
    }
    
    
    LCFourVector(const EVENT::LCObject* lcObj){
      
      _lcObj = dynamic_cast< const TT* >( lcObj ) ;
      
      if( _lcObj == 0 )
    throw EVENT::Exception("Dynamic cast failed for LCFourVector() !") ;
    }

    const TT* operator->() const { return _lcObj ; } 


    const TT* lcObj() const { return _lcObj ; } 


    
  protected:
    LCFourVector() {}  // no default c'tor
    
  }; // class

} // namespace UTIL


#include "UTIL/LCFourVector.icc"


#endif /* ifndef UTIL_LCFOURVECTOR_H */