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// Hadronic Process: Nuclear De-excitations
// by V. Lara (Nov 1998)

#include "G4FermiBreakUp.hh"
#include "G4HadronicException.hh"

G4FermiBreakUp::G4FermiBreakUp()
{
}

G4FermiBreakUp::G4FermiBreakUp(const G4FermiBreakUp &) : G4VFermiBreakUp()
{
  throw G4HadronicException(__FILE__, __LINE__, "G4FermiBreakUp::copy_constructor meant to not be accessable");
}


G4FermiBreakUp::~G4FermiBreakUp()
{
}


const G4FermiBreakUp & G4FermiBreakUp::operator=(const G4FermiBreakUp &)
{
  throw G4HadronicException(__FILE__, __LINE__, "G4FermiBreakUp::operator= meant to not be accessable");
  return *this;
}


G4bool G4FermiBreakUp::operator==(const G4FermiBreakUp &) const
{
  return false;
}

G4bool G4FermiBreakUp::operator!=(const G4FermiBreakUp &) const
{
  return true;
}



G4FragmentVector * G4FermiBreakUp::BreakItUp(const G4Fragment &theNucleus)
{
  // CHECK that Excitation Energy > 0
  if (theNucleus.GetExcitationEnergy() <= 0) 
    {
      G4FragmentVector * theResult = new G4FragmentVector;
      theResult->push_back(new G4Fragment(theNucleus));
      return theResult;
    }
  
  // Total energy of nucleus in nucleus rest frame 
  G4double TotalEnergyRF = theNucleus.GetMomentum().m();
  //   G4double TotalEnergyRF = theNucleus.GetExcitationEnergy() +
  //     G4ParticleTable::GetParticleTable()->GetIonTable()->
  //     GetIonMass(static_cast<G4int>(theNucleus.GetZ()),static_cast<G4int>(theNucleus.GetA()));
  
  
  G4FermiConfigurationList theConfigurationList;
  
  
  // Split the nucleus
  G4bool Split = theConfigurationList.Initialize(static_cast<G4int>(theNucleus.GetA()), 
						 static_cast<G4int>(theNucleus.GetZ()),
						 TotalEnergyRF);
  if ( !Split ) 
    {
      G4FragmentVector * theResult = new G4FragmentVector;
      theResult->push_back(new G4Fragment(theNucleus));
      
      return theResult;
    }

  // Chose a configuration
  G4FermiConfiguration theConfiguration(theConfigurationList.ChooseConfiguration());
  
  
  // Get the fragments corresponding to chosen configuration.
  G4FragmentVector * theResult = theConfiguration.GetFragments(theNucleus);
#ifdef PRECOMPOUND_TEST
  for (G4FragmentVector::iterator i = theResult->begin(); i != theResult->end(); i++)
    {
      (*i)->SetCreatorModel("G4FermiBreakUp");
    }
#endif
  return theResult;
  
}