G4ErrorFreeTrajParam Class Reference

#include <G4ErrorFreeTrajParam.hh>


Public Member Functions

 G4ErrorFreeTrajParam ()
 G4ErrorFreeTrajParam (const G4Point3D &pos, const G4Vector3D &mom)
virtual ~G4ErrorFreeTrajParam ()
void Update (const G4Track *aTrack)
void SetParameters (const G4Point3D &pos, const G4Vector3D &mom)
G4Vector3D GetDirection () const
G4double GetInvP () const
G4double GetLambda () const
G4double GetPhi () const
G4double GetYPerp () const
G4double GetZPerp () const

Friends

std::ostream & operator<< (std::ostream &, const G4ErrorFreeTrajParam &ts)


Detailed Description

Definition at line 49 of file G4ErrorFreeTrajParam.hh.


Constructor & Destructor Documentation

G4ErrorFreeTrajParam::G4ErrorFreeTrajParam (  )  [inline]

Definition at line 53 of file G4ErrorFreeTrajParam.hh.

00054    : fInvP(0.), fLambda(0.), fPhi(0.), fYPerp(0.), fZPerp(0.){}

G4ErrorFreeTrajParam::G4ErrorFreeTrajParam ( const G4Point3D pos,
const G4Vector3D mom 
)

Definition at line 40 of file G4ErrorFreeTrajParam.cc.

References SetParameters().

00042 {
00043   SetParameters( pos, mom );
00044 }

virtual G4ErrorFreeTrajParam::~G4ErrorFreeTrajParam (  )  [inline, virtual]

Definition at line 58 of file G4ErrorFreeTrajParam.hh.

00058 {}


Member Function Documentation

G4Vector3D G4ErrorFreeTrajParam::GetDirection (  )  const [inline]

Definition at line 70 of file G4ErrorFreeTrajParam.hh.

Referenced by G4ErrorFreeTrajState::G4ErrorFreeTrajState().

00070 { return fDir;}

G4double G4ErrorFreeTrajParam::GetInvP (  )  const [inline]

Definition at line 72 of file G4ErrorFreeTrajParam.hh.

00072 { return fInvP; }

G4double G4ErrorFreeTrajParam::GetLambda (  )  const [inline]

Definition at line 73 of file G4ErrorFreeTrajParam.hh.

Referenced by G4ErrorSurfaceTrajState::BuildErrorMatrix(), and G4ErrorFreeTrajState::G4ErrorFreeTrajState().

00073 { return fLambda; }

G4double G4ErrorFreeTrajParam::GetPhi (  )  const [inline]

Definition at line 74 of file G4ErrorFreeTrajParam.hh.

Referenced by G4ErrorSurfaceTrajState::BuildErrorMatrix(), and G4ErrorFreeTrajState::G4ErrorFreeTrajState().

00074 { return fPhi; }

G4double G4ErrorFreeTrajParam::GetYPerp (  )  const [inline]

Definition at line 75 of file G4ErrorFreeTrajParam.hh.

00075 { return fYPerp; }

G4double G4ErrorFreeTrajParam::GetZPerp (  )  const [inline]

Definition at line 76 of file G4ErrorFreeTrajParam.hh.

00076 { return fZPerp; }

void G4ErrorFreeTrajParam::SetParameters ( const G4Point3D pos,
const G4Vector3D mom 
)

Definition at line 48 of file G4ErrorFreeTrajParam.cc.

Referenced by G4ErrorFreeTrajParam(), G4ErrorFreeTrajState::SetParameters(), and Update().

00050 {
00051   fInvP = 1./mom.mag();
00052   fDir = mom*fInvP;
00053   fLambda = 90.*deg - mom.theta();
00054   fPhi = mom.phi();
00055   G4Vector3D vxPerp(0.,0.,0.);
00056   if( mom.mag() > 0.) {
00057     vxPerp = mom/mom.mag();
00058   }
00059   G4Vector3D vyPerp = G4Vector3D( -vxPerp.y(), vxPerp.x(), 0.);
00060   vyPerp /= vyPerp.mag();
00061   G4Vector3D vzPerp = vxPerp.cross( vyPerp );
00062   vzPerp /= vzPerp.mag();
00063   // check if right handed
00064   //  fXPerp = pos.proj( mom );
00065   G4ThreeVector posv(pos);
00066   if( vyPerp.mag() != 0. ) {
00067     // now all 2 scalar memeber variables retain the signs
00068     //  fYPerp = posv.project( vyPerp ).mag();
00069     //  fZPerp = posv.project( vzPerp ).mag();
00070     fYPerp = posv.dot( vyPerp );
00071     fZPerp = posv.dot( vzPerp );
00072   } else {
00073     fYPerp = 0.;
00074     fZPerp = 0.;
00075   }
00076 }

void G4ErrorFreeTrajParam::Update ( const G4Track aTrack  ) 

Definition at line 79 of file G4ErrorFreeTrajParam.cc.

References G4Track::GetMomentum(), G4Track::GetPosition(), and SetParameters().

Referenced by G4ErrorFreeTrajState::Update().

00080 {
00081   SetParameters( aTrack->GetPosition(), aTrack->GetMomentum() );
00082 
00083 }


Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  out,
const G4ErrorFreeTrajParam ts 
) [friend]

Definition at line 87 of file G4ErrorFreeTrajParam.cc.

00088 {
00089   G4int oldprc = out.precision(8);
00090   out << " InvP= " << tp.fInvP << " Theta= "
00091       << tp.fLambda << " Phi= " << tp.fPhi << " YPerp= " << tp.fYPerp
00092       << " ZPerp= " << tp.fZPerp << G4endl;
00093   out << " momentum direction= " << tp.fDir << G4endl;
00094   out.precision(oldprc);
00095     
00096   return out;
00097 }


The documentation for this class was generated from the following files:
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