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1 // 1 //
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25 // 25 //
>> 26 // $Id: G4ErrorFreeTrajParam.cc 69014 2013-04-15 09:42:51Z gcosmo $
26 // 27 //
27 // ------------------------------------------- 28 // ------------------------------------------------------------
28 // GEANT 4 class implementation file << 29 // GEANT 4 class implementation file
29 // ------------------------------------------- 30 // ------------------------------------------------------------
30 // 31 //
31 32
32 #include "G4ErrorFreeTrajParam.hh" 33 #include "G4ErrorFreeTrajParam.hh"
33 #include "G4ThreeVector.hh" 34 #include "G4ThreeVector.hh"
34 #include "G4SystemOfUnits.hh" 35 #include "G4SystemOfUnits.hh"
35 36
36 #include <iomanip> 37 #include <iomanip>
37 38
38 //-------------------------------------------- 39 //------------------------------------------------------------------------
39 G4ErrorFreeTrajParam::G4ErrorFreeTrajParam(con << 40 G4ErrorFreeTrajParam::G4ErrorFreeTrajParam( const G4Point3D& pos,
40 con << 41 const G4Vector3D& mom )
41 { 42 {
42 SetParameters(pos, mom); << 43 SetParameters( pos, mom );
43 } 44 }
44 45
>> 46
45 //-------------------------------------------- 47 //------------------------------------------------------------------------
46 void G4ErrorFreeTrajParam::SetParameters(const << 48 void G4ErrorFreeTrajParam::SetParameters( const G4Point3D& pos,
47 const << 49 const G4Vector3D& mom )
48 { 50 {
49 fInvP = 1. / mom.mag(); << 51 fInvP = 1./mom.mag();
50 fDir = mom * fInvP; << 52 fDir = mom*fInvP;
51 fLambda = 90. * deg - mom.theta(); << 53 fLambda = 90.*deg - mom.theta();
52 fPhi = mom.phi(); << 54 fPhi = mom.phi();
53 G4Vector3D vxPerp(0., 0., 0.); << 55 G4Vector3D vxPerp(0.,0.,0.);
54 if(mom.mag() > 0.) << 56 if( mom.mag() > 0.) {
55 { << 57 vxPerp = mom/mom.mag();
56 vxPerp = mom / mom.mag(); <<
57 } 58 }
58 G4Vector3D vyPerp = G4Vector3D(-vxPerp.y(), << 59 G4Vector3D vyPerp = G4Vector3D( -vxPerp.y(), vxPerp.x(), 0.);
59 vyPerp /= vyPerp.mag(); 60 vyPerp /= vyPerp.mag();
60 G4Vector3D vzPerp = vxPerp.cross(vyPerp); << 61 G4Vector3D vzPerp = vxPerp.cross( vyPerp );
61 vzPerp /= vzPerp.mag(); 62 vzPerp /= vzPerp.mag();
62 // check if right handed 63 // check if right handed
63 // fXPerp = pos.proj( mom ); 64 // fXPerp = pos.proj( mom );
64 G4ThreeVector posv(pos); 65 G4ThreeVector posv(pos);
65 if(vyPerp.mag() != 0.) << 66 if( vyPerp.mag() != 0. ) {
66 { <<
67 // now all 2 scalar memeber variables reta 67 // now all 2 scalar memeber variables retain the signs
68 // fYPerp = posv.project( vyPerp ).mag(); 68 // fYPerp = posv.project( vyPerp ).mag();
69 // fZPerp = posv.project( vzPerp ).mag(); 69 // fZPerp = posv.project( vzPerp ).mag();
70 fYPerp = posv.dot(vyPerp); << 70 fYPerp = posv.dot( vyPerp );
71 fZPerp = posv.dot(vzPerp); << 71 fZPerp = posv.dot( vzPerp );
72 } << 72 } else {
73 else <<
74 { <<
75 fYPerp = 0.; 73 fYPerp = 0.;
76 fZPerp = 0.; 74 fZPerp = 0.;
77 } 75 }
78 } 76 }
79 77
80 //-------------------------------------------- 78 //------------------------------------------------------------------------
81 void G4ErrorFreeTrajParam::Update(const G4Trac << 79 void G4ErrorFreeTrajParam::Update( const G4Track* aTrack )
82 { 80 {
83 SetParameters(aTrack->GetPosition(), aTrack- << 81 SetParameters( aTrack->GetPosition(), aTrack->GetMomentum() );
>> 82
84 } 83 }
85 84
>> 85
86 //-------------------------------------------- 86 //------------------------------------------------------------------------
87 std::ostream& operator<<(std::ostream& out, co 87 std::ostream& operator<<(std::ostream& out, const G4ErrorFreeTrajParam& tp)
88 { 88 {
89 G4long oldprc = out.precision(8); << 89 G4int oldprc = out.precision(8);
90 out << " InvP= " << tp.fInvP << " Theta= " < << 90 out << " InvP= " << tp.fInvP << " Theta= "
91 << " Phi= " << tp.fPhi << " YPerp= " << << 91 << tp.fLambda << " Phi= " << tp.fPhi << " YPerp= " << tp.fYPerp
92 << " ZPerp= " << tp.fZPerp << G4endl; 92 << " ZPerp= " << tp.fZPerp << G4endl;
93 out << " momentum direction= " << tp.fDir << 93 out << " momentum direction= " << tp.fDir << G4endl;
94 out.precision(oldprc); 94 out.precision(oldprc);
95 << 95
96 return out; 96 return out;
97 } 97 }
98 98