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//
// ------------------------------------------------------------
//      GEANT 4 class header file
//
//      History:
//      17 August 2004  P. Gumplinger, T. MacPhail
// ------------------------------------------------------------
//
#ifndef G4DecayWithSpin_h
#define G4DecayWithSpin_h 1

#include "G4ios.hh"
#include "globals.hh"
#include "G4VRestDiscreteProcess.hh"
#include "G4ParticleChangeForDecay.hh"

#include "G4Decay.hh"

class G4DecayWithSpin : public G4Decay
{
  public:
    //  Constructors
    G4DecayWithSpin(const G4String& processName ="DecayWithSpin");

    //  Destructor
    virtual ~G4DecayWithSpin();

  protected: // With Description
    virtual G4VParticleChange* PostStepDoIt(
                             const G4Track& aTrack,
                             const G4Step&  aStep
                            );

    virtual G4VParticleChange* AtRestDoIt(
                             const G4Track& aTrack,
                             const G4Step&  aStep
                            );
  private:
  G4ThreeVector Spin_Precession(const G4Step& aStep,
                                G4ThreeVector B, G4double deltatime );

};

#endif
