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// $Id: G4UnstableFermiFragment.cc,v 1.8 2006/06/29 20:13:11 gunter Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Nov 1998)

#include "G4UnstableFermiFragment.hh"
#include "G4FermiPhaseSpaceDecay.hh"
#include "G4HadronicException.hh"
#include <numeric>

G4UnstableFermiFragment::G4UnstableFermiFragment()
{
}

G4UnstableFermiFragment::G4UnstableFermiFragment(const G4UnstableFermiFragment &) : G4VFermiFragment()
{
  throw G4HadronicException(__FILE__, __LINE__, "G4UnstableFermiFragment::copy_constructor meant to not be accessable");
}


G4UnstableFermiFragment::~G4UnstableFermiFragment()
{
}

  
const G4UnstableFermiFragment & G4UnstableFermiFragment::operator=(const G4UnstableFermiFragment &)
{
  throw G4HadronicException(__FILE__, __LINE__, "G4UnstableFermiFragment::operator= meant to not be accessable");
  return *this;
}


G4bool G4UnstableFermiFragment::operator==(const G4UnstableFermiFragment &) const
{
  return false;
}

G4bool G4UnstableFermiFragment::operator!=(const G4UnstableFermiFragment &) const
{
  return true;
}



G4FragmentVector * G4UnstableFermiFragment::GetFragment(const G4LorentzVector& aMomentum) const
{
  G4FermiPhaseSpaceDecay thePhaseSpace;

  std::vector<G4LorentzVector*> * P_i = thePhaseSpace.Decay(aMomentum.m(), Masses);

  G4ThreeVector Beta = aMomentum.boostVector();

  G4FragmentVector * theResult = new G4FragmentVector;

  for (std::vector<G4LorentzVector*>::iterator i = P_i->begin(); i != P_i->end(); i++)
    {
#ifdef G4NO_ISO_VECDIST
      std::vector<G4LorentzVector*>::difference_type tmp_n = 0;
      std::distance(P_i->begin(),i,tmp_n);
      G4int n = tmp_n;
#else
      G4int n = std::distance(P_i->begin(),i);
#endif
      (*i)->boost(Beta);
      theResult->push_back(new G4Fragment(static_cast<G4int>(AtomNum[n]),
					  static_cast<G4int>(Charges[n]),
					  *(*i)));
      
      delete *i;
    }
  delete P_i;
  
  return theResult;
}
