// This code implementation is the intellectual property of
// the GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4ParticleChange.icc,v 1.7 2000/02/13 15:08:20 kurasige Exp $
// GEANT4 tag $Name: geant4-03-00 $
//
// 
inline
 G4Step* G4ParticleChange::UpdateStepInfo(G4Step* pStep)
{
  // use fUseEBForAll instead of fUseEB
  fUseEB = fUseEBForAll;
  return G4VParticleChange::UpdateStepInfo(pStep);
}

inline 
 G4double G4ParticleChange::GetEnergyChange() const
{
  return theEnergyChange;
}

inline
 void G4ParticleChange::SetEnergyChange(G4double Energy)
{
  theEnergyChange = Energy;
}

inline 
 const G4ThreeVector* G4ParticleChange::GetMomentumChange() const
{
  return &theMomentumDirectionChange;
}

inline 
 void G4ParticleChange::SetMomentumChange(
						G4double Px, 
						G4double Py, 
						G4double Pz	)
{
  theMomentumDirectionChange.setX(Px);
  theMomentumDirectionChange.setY(Py);
  theMomentumDirectionChange.setZ(Pz);
}

inline 
 void G4ParticleChange::SetMomentumChange(const G4ThreeVector& P)
{
  theMomentumDirectionChange = P;
}

inline 
 const G4ThreeVector* G4ParticleChange::GetMomentumDirectionChange() const
{
  return &theMomentumDirectionChange;
}

inline 
 void G4ParticleChange::SetMomentumDirectionChange(
						G4double Px, 
						G4double Py, 
						G4double Pz	)
{
  theMomentumDirectionChange.setX(Px);
  theMomentumDirectionChange.setY(Py);
  theMomentumDirectionChange.setZ(Pz);
}

inline 
 void G4ParticleChange::SetMomentumDirectionChange(const G4ThreeVector& P)
{
  theMomentumDirectionChange = P;
}

inline 
 const G4ThreeVector* G4ParticleChange::GetPolarizationChange() const
{
  return &thePolarizationChange;
}

inline 
 void G4ParticleChange::SetPolarizationChange( const G4ThreeVector& finalPoralization)
{
  thePolarizationChange = finalPoralization;
}

inline 
 void G4ParticleChange::SetPolarizationChange(
						G4double Px, 
						G4double Py, 
						G4double Pz	)
{
  thePolarizationChange.setX(Px);
  thePolarizationChange.setY(Py);
  thePolarizationChange.setZ(Pz);
}

inline 
 const G4ThreeVector* G4ParticleChange::GetPositionChange() const
{
  return &thePositionChange;
}

inline 
  G4double  G4ParticleChange::GetProperTimeChange() const
{
  return  theProperTimeChange;
}

inline 
  void G4ParticleChange::SetProperTimeChange(G4double tau)
{
  theProperTimeChange = tau;

}

inline 
 void G4ParticleChange::SetPositionChange(const G4ThreeVector& finalPosition)
{
  thePositionChange= finalPosition;
}

inline 
 void G4ParticleChange::SetPositionChange(G4double x,G4double y, G4double z)
{
  thePositionChange.setX(x);
  thePositionChange.setY(y);
  thePositionChange.setZ(z);
}

inline
 G4ThreeVector G4ParticleChange::GetGlobalPosition(const G4ThreeVector& displacement) const
{
  return thePositionChange + displacement;
}


inline
 G4double  G4ParticleChange::GetGlobalTime(G4double timeDelay) const
{
      //  Convert the time delay to the global time.
  return theTimeChange + timeDelay;
}

inline 
  G4double  G4ParticleChange::GetTimeChange() const
{
  return  theTimeChange;
}

inline 
  void G4ParticleChange::SetTimeChange(G4double t)
{
  theTimeChange = t;
}

inline 
  G4double  G4ParticleChange::GetMassChange() const
{
  return  theMassChange;
}

inline 
  void G4ParticleChange::SetMassChange(G4double t)
{
  theMassChange = t;
}

inline 
  G4double  G4ParticleChange::GetChargeChange() const
{
  return  theChargeChange;
}

inline 
  void G4ParticleChange::SetChargeChange(G4double t)
{
  theChargeChange = t;
}

inline 
  G4double  G4ParticleChange::GetWeightChange() const
{
  return  theWeightChange;
}

inline 
  void G4ParticleChange::SetWeightChange(G4double w)
{
  theWeightChange = w;
  theParentWeight = w;
}

inline  
  G4ThreeVector G4ParticleChange::CalcMomentum(G4double          energy,
			    	              G4ThreeVector   direction,
			                      G4double           mass      
					      ) const
{
  G4double tMomentum = sqrt(energy*energy + 2*energy*mass);
  return direction*tMomentum; 
}

inline
  void G4ParticleChange::SwOnAllEB()
{
  fUseEBForAll = true;
}

inline void G4ParticleChange::SwOffAllEB()
{
  fUseEBForAll = false;
}