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// $Id$
// GEANT4 tag $Name:  $
//

#ifndef G4DiffractiveSplitableHadron_h
#define G4DiffractiveSplitableHadron_h 1

// ------------------------------------------------------------
//      GEANT 4 class header file
//
//      ---------------- G4DiffractiveSplitableHadron----------------
//             by Gunter Folger, August 1998.
//       class splitting an interacting particle. Used by FTF String Model.
// ------------------------------------------------------------

#include "G4VSplitableHadron.hh"
#include "G4Nucleon.hh"
#include "G4Parton.hh"


class G4DiffractiveSplitableHadron : public G4VSplitableHadron {
  public:
    G4DiffractiveSplitableHadron();
    G4DiffractiveSplitableHadron( const G4ReactionProduct& aPrimary );
    G4DiffractiveSplitableHadron( const G4Nucleon& aNucleon );
    G4DiffractiveSplitableHadron( const G4VKineticNucleon* aNucleon );
    ~G4DiffractiveSplitableHadron();

    void SplitUp();
    G4Parton* GetNextParton() ;
    G4Parton* GetNextAntiParton();

    void SetFirstParton( G4int PDGcode );
    void SetSecondParton( G4int PDGcode );

  private:
    G4DiffractiveSplitableHadron( const G4DiffractiveSplitableHadron& );
    G4DiffractiveSplitableHadron& operator=( const G4DiffractiveSplitableHadron& );
    int operator==( const G4DiffractiveSplitableHadron& right ) const;
    int operator!=( const G4DiffractiveSplitableHadron& right ) const;

    G4int Diquark( G4int aquark, G4int bquark, G4int Spin ) const;
    void ChooseStringEnds( G4int PDGcode, G4int* aEnd, G4int* bEnd ) const;

    G4Parton* Parton[2];
    G4int PartonIndex; 
};

#endif

