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//
#ifndef G4PartonPair_h
#define G4PartonPair_h 1

#include "globals.hh"
#include "G4ThreeVector.hh"
#include "G4LorentzVector.hh"
#include "G4Parton.hh"
#include "G4PartonVector.hh"

class G4PartonPair 
{
public:
	enum {
		DIFFRACTIVE = 1,
		SOFT = 2,
		HARD  = 3
	};
	enum
	{
		PROJECTILE = 1,
		TARGET = -1
	};
public:
	G4PartonPair(G4Parton* P1, G4Parton* P2, G4int Type, G4int Direction);
	~G4PartonPair();

private:
	G4PartonPair(const G4PartonPair &right);
	int operator==(const G4PartonPair &right) const;
	int operator!=(const G4PartonPair &right) const;

public:
	void  SetPartons(G4Parton* P1, G4Parton* P2);
	void  SetCollisionType(G4int Type);
	G4int GetCollisionType();
	G4Parton* GetParton1(void);
	G4Parton* GetParton2(void);
	G4int GetDirection();


private:
	G4Parton* Parton1;
	G4Parton* Parton2;
	G4int     CollisionType;
	G4int     Direction;

};

inline G4Parton* G4PartonPair::GetParton1(void)
{
	return Parton1;
}

inline G4Parton* G4PartonPair::GetParton2(void)
{
	return Parton2;
}

inline void G4PartonPair::SetCollisionType(G4int Type)
{
	CollisionType = Type;
}

inline G4int G4PartonPair::GetCollisionType()
{
	return CollisionType;
}

inline G4int G4PartonPair::GetDirection()
{
	return Direction;
}


#endif