TrackPropagation Namespace Reference

Functions
G4ErrorTrajErr	algebraicSymMatrix55ToG4ErrorTrajErr (const AlgebraicSymMatrix55 &e, const int q)
AlgebraicSymMatrix55	g4ErrorTrajErrToAlgebraicSymMatrix55 (const G4ErrorTrajErr &e, const int q)
CLHEP::Hep3Vector	globalPointToHep3Vector (const GlobalPoint &r)
HepGeom::Point3D< double >	globalPointToHepPoint3D (const GlobalPoint &r)
CLHEP::Hep3Vector	globalVectorToHep3Vector (const GlobalVector &p)
HepGeom::Normal3D< double >	globalVectorToHepNormal3D (const GlobalVector &p)
GlobalPoint	hep3VectorToGlobalPoint (const CLHEP::Hep3Vector &v)
GlobalVector	hep3VectorToGlobalVector (const CLHEP::Hep3Vector &p)
GlobalVector	hepNormal3DToGlobalVector (const HepGeom::Normal3D< double > &p)
GlobalPoint	hepPoint3DToGlobalPoint (const HepGeom::Point3D< double > &r)
TkRotation< float >	hepRotationToTkRotationF (const CLHEP::HepRotation &r)
CLHEP::HepRotation	tkRotationFToHepRotation (const TkRotation< float > &tkr)

Detailed Description

Utilities to convert among CLHEP and CMS points and vectors

Function Documentation

G4ErrorTrajErr TrackPropagation::algebraicSymMatrix55ToG4ErrorTrajErr	(	const AlgebraicSymMatrix55 &	e,
		const int	q
	)

Convert a CMS Algebraic Sym Matrix (for curv error) to a G4 Trajectory Error Matrix

Definition at line 141 of file ConvertFromToCLHEP.h.

References alignCSCRings::e, i, and j.

                                                                                     {
    G4ErrorTrajErr g4err(5,1);
    for (unsigned int i = 0; i < 5; i++)
      for (unsigned int j = 0; j < 5; j++) {
    g4err(i+1, j+1) = e(i,j);
    if(i==0) g4err(i+1,j+1) = q*g4err(i+1,j+1);
    if(j==0) g4err(i+1,j+1) = q*g4err(i+1,j+1);
      }
    return g4err;
  }

AlgebraicSymMatrix55 TrackPropagation::g4ErrorTrajErrToAlgebraicSymMatrix55	(	const G4ErrorTrajErr &	e,
		const int	q
	)

Convert a G4 Trajectory Error Matrix to the CMS Algebraic Sym Matrix CMS uses q/p as first parameter, G4 uses 1/p

Definition at line 125 of file ConvertFromToCLHEP.h.

References alignCSCRings::e, i, and j.

                                                                              {
    //From DataFormats/CLHEP/interface/Migration.h
    //typedef ROOT::Math::SMatrix<double,5,5,ROOT::Math::MatRepSym<double,5> > AlgebraicSymMatrix55;
    AlgebraicSymMatrix55 m55;
    for (unsigned int i = 0; i < 5; i++)
      for (unsigned int j = 0; j < 5; j++) {
    m55(i, j) = e(i+1,j+1);
    if(i==0) m55(i,j) = q*m55(i,j);
    if(j==0) m55(i,j) = q*m55(i,j);
      }
    return m55;
  }

CLHEP::Hep3Vector TrackPropagation::globalPointToHep3Vector

(

const GlobalPoint &

r

)

Convert a CMS GlobalPoint to a CLHEP CLHEP::Hep3Vector CMS uses cm while Geant4 uses mm. This is taken into account in the conversion.

Definition at line 82 of file ConvertFromToCLHEP.h.

References PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                {
     return CLHEP::Hep3Vector(r.x()*cm, r.y()*cm, r.z()*cm);
  }

HepGeom::Point3D<double> TrackPropagation::globalPointToHepPoint3D

(

const GlobalPoint &

r

)

Convert a CMS GlobalPoint to a CLHEP HepGeom::Point3D<double> CMS uses cm while Geant4 uses mm. This is taken into account in the conversion.

Definition at line 31 of file ConvertFromToCLHEP.h.

References PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                        {
    return HepGeom::Point3D<double> (r.x()*cm, r.y()*cm, r.z()*cm);
  }

CLHEP::Hep3Vector TrackPropagation::globalVectorToHep3Vector

(

const GlobalVector &

p

)

Convert a CMS GlobalVector to a CLHEP CLHEP::Hep3Vector

Definition at line 65 of file ConvertFromToCLHEP.h.

References PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                  {
    return CLHEP::Hep3Vector(p.x(), p.y(), p.z());
  }

HepGeom::Normal3D<double> TrackPropagation::globalVectorToHepNormal3D

(

const GlobalVector &

p

)

Convert a CMS GlobalVector to a CLHEP HepGeom::Normal3D<double> CMS uses GeV while G4 uses MeV

Definition at line 49 of file ConvertFromToCLHEP.h.

References PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                            {
    return HepGeom::Normal3D<double> (p.x(), p.y(), p.z());
  }

GlobalPoint TrackPropagation::hep3VectorToGlobalPoint

(

const CLHEP::Hep3Vector &

v

)

Convert a CLHEP CLHEP::Hep3Vector to a CMS GlobalPoint CMS uses cm while Geant4 uses mm. This is taken into account in the conversion.

Definition at line 90 of file ConvertFromToCLHEP.h.

                                                                {
    return GlobalPoint(v.x()/cm, v.y()/cm, v.z()/cm);
  }

GlobalVector TrackPropagation::hep3VectorToGlobalVector

(

const CLHEP::Hep3Vector &

p

)

Convert a CLHEP CLHEP::Hep3Vector to a CMS GlobalVector

Definition at line 71 of file ConvertFromToCLHEP.h.

                                                                  {
    return GlobalVector(p.x(), p.y(), p.z());
  }

GlobalVector TrackPropagation::hepNormal3DToGlobalVector

(

const HepGeom::Normal3D< double > &

p

)

Convert a CLHEP HepGeom::Normal3D<double> to a CMS GlobalVector CMS uses GeV while G4 uses MeV

Definition at line 56 of file ConvertFromToCLHEP.h.

                                                                            {
    return GlobalVector(p.x(), p.y(), p.z());
  }

GlobalPoint TrackPropagation::hepPoint3DToGlobalPoint

(

const HepGeom::Point3D< double > &

r

)

Convert a CLHEP HepGeom::Point3D<double> to a CMS GlobalPoint CMS uses cms while Geant4 uses mm. This is taken into account in the conversion.

Definition at line 41 of file ConvertFromToCLHEP.h.

                                                                        {
    return GlobalPoint(r.x()/cm, r.y()/cm, r.z()/cm);
  }

TkRotation<float> TrackPropagation::hepRotationToTkRotationF

(

const CLHEP::HepRotation &

r

)

Convert a CLHEP CLHEP::Hep3Vector to a CMS GlobalPoint

Definition at line 112 of file ConvertFromToCLHEP.h.

                                                                        {
    return TkRotation<float>(r.xx(), r.xy(), r.xz(),
                 r.yx(), r.yy(), r.yz(),
                 r.zx(), r.zy(), r.zz());
  }

CLHEP::HepRotation TrackPropagation::tkRotationFToHepRotation

(

const TkRotation< float > &

tkr

)

Convert a CMS TkRotation<float> to a CLHEP CLHEP::HepRotation=G4RotationMatrix

Definition at line 104 of file ConvertFromToCLHEP.h.

References TkRotation< T >::xx(), TkRotation< T >::xy(), TkRotation< T >::xz(), TkRotation< T >::yx(), TkRotation< T >::yy(), TkRotation< T >::yz(), TkRotation< T >::zx(), TkRotation< T >::zy(), and TkRotation< T >::zz().

                                                                          {
    return CLHEP::HepRotation(CLHEP::Hep3Vector(tkr.xx(),tkr.yx(), tkr.zx()),
               CLHEP::Hep3Vector(tkr.xy(),tkr.yy(), tkr.zy()),
               CLHEP::Hep3Vector(tkr.xz(),tkr.yz(), tkr.zz()));
  }