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// $Id$
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Oct 1998)

#ifndef G4CompetitiveFission_h
#define G4CompetitiveFission_h 1

#include "G4VEvaporationChannel.hh"
#include "G4Fragment.hh"
#include "G4VFissionBarrier.hh"
#include "G4FissionBarrier.hh"
#include "G4VEmissionProbability.hh"
#include "G4FissionProbability.hh"
#include "G4VLevelDensityParameter.hh"
#include "G4FissionLevelDensityParameter.hh"
#include "G4FissionParameters.hh"
#include "G4ParticleTable.hh"
#include "G4IonTable.hh"
#include "Randomize.hh"

//#define debug

class G4CompetitiveFission : public G4VEvaporationChannel
{
public:
  
  G4CompetitiveFission();
  virtual ~G4CompetitiveFission();

private:
  G4CompetitiveFission(const G4CompetitiveFission &right);
  const G4CompetitiveFission & operator=(const G4CompetitiveFission &right);
  G4bool operator==(const G4CompetitiveFission &right) const;
  G4bool operator!=(const G4CompetitiveFission &right) const;

public:

  virtual G4FragmentVector * BreakUp(const G4Fragment &theNucleus);

  virtual G4double GetEmissionProbability(G4Fragment* theNucleus);

  inline void SetFissionBarrier(G4VFissionBarrier * aBarrier)
  {
    if (MyOwnFissionBarrier) delete theFissionBarrierPtr;
    theFissionBarrierPtr = aBarrier;
    MyOwnFissionBarrier = false;
  }

  inline void SetEmissionStrategy(G4VEmissionProbability * aFissionProb)
  {
    if (MyOwnFissionProbability) delete theFissionProbabilityPtr;
    theFissionProbabilityPtr = aFissionProb;
    MyOwnFissionProbability = false;
  }


  inline void SetLevelDensityParameter(G4VLevelDensityParameter * aLevelDensity)
  { 
    if (MyOwnLevelDensity) delete theLevelDensityPtr;
    theLevelDensityPtr = aLevelDensity;
    MyOwnLevelDensity = false;
  }


  inline G4double GetFissionBarrier(void) const { return FissionBarrier; }

  inline G4double GetLevelDensityParameter(void) const { return LevelDensityParameter; }

  inline G4double GetMaximalKineticEnergy(void) const { return MaximalKineticEnergy; }
private:

  // Maximal Kinetic Energy that can be carried by fragment
  G4double MaximalKineticEnergy;


  // For Fission barrier
  G4VFissionBarrier * theFissionBarrierPtr;
  G4double FissionBarrier;
  G4bool MyOwnFissionBarrier;

  // For Fission probability emission
  G4VEmissionProbability * theFissionProbabilityPtr;
  G4double FissionProbability;
  G4bool MyOwnFissionProbability;


  // For Level Density calculation
  G4bool MyOwnLevelDensity;
  G4VLevelDensityParameter * theLevelDensityPtr;
  G4double LevelDensityParameter;

  //  --------------------

  // Sample AtomicNumber of Fission products
  G4int FissionAtomicNumber(G4int A, const G4FissionParameters & theParam);
  G4double MassDistribution(G4double x, G4double A, const G4FissionParameters & theParam);


  // Sample Charge of fission products
  G4int FissionCharge(G4double A, G4double Z, G4double Af);


  // Sample Kinetic energy of fission products
  G4double FissionKineticEnergy(G4int A, G4int Z,
				G4double Af1, G4double Zf1,
				G4double Af2, G4double Zf2,
				G4double U, G4double Tmax,
				const G4FissionParameters & theParam);
    
  G4double Ratio(G4double A, G4double A11, G4double B1, G4double A00);
  G4double SymmetricRatio(G4int A, G4double A11);
  G4double AsymmetricRatio(G4int A, G4double A11);

  G4ThreeVector IsotropicVector(G4double Magnitude = 1.0);

#ifdef debug
  void CheckConservation(const G4Fragment & theInitialState,
			 G4FragmentVector * Result) const;
#endif

};

#endif