G4FieldTrackUpdator.cc

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//
// $Id$
//
//   M. Asai - first implementation Apr/28/2006
//
//---------------------------------------------------------------
//
// G4FieldTrackUpdator.cc
//
//---------------------------------------------------------------

#include "globals.hh"
#include "G4FieldTrackUpdator.hh"
#include "G4ThreeVector.hh"
#include "G4Track.hh"
#include "G4DynamicParticle.hh"
#include "G4TrackStatus.hh"
#include "G4FieldTrack.hh"

G4FieldTrack* G4FieldTrackUpdator::CreateFieldTrack(const G4Track* trk)
{
  G4FieldTrack* ftrk = new G4FieldTrack(
    trk->GetPosition(),
    trk->GetGlobalTime(),
    trk->GetMomentumDirection(),
    trk->GetKineticEnergy(),
    trk->GetDynamicParticle()->GetMass(),
    trk->GetDynamicParticle()->GetCharge(),
    trk->GetDynamicParticle()->GetPolarization(),
    0.0                   // magnetic dipole moment to be implemented
    );
  return ftrk;
}

void G4FieldTrackUpdator::Update(G4FieldTrack* ftrk,const G4Track* trk)
{
  ftrk->UpdateState(
    trk->GetPosition(),     
    trk->GetGlobalTime(),
    trk->GetMomentumDirection(),
    trk->GetKineticEnergy()
    );
  const G4DynamicParticle* ptDynamicParticle= trk->GetDynamicParticle();

  ftrk->SetChargeAndMoments( ptDynamicParticle->GetCharge() );
   // The charge can change during tracking
  ftrk->SetSpin( ptDynamicParticle->GetPolarization() );

  // The following properties must be updated ONCE for each new track (at least)
  ftrk->SetRestMass(ptDynamicParticle->GetMass());   
}