| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // $Id: G4ErrorSurfaceTrajParam.cc,v 1.3 2007/05/31 20:22:45 arce Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $
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| 28 | //
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| 29 | // ------------------------------------------------------------
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| 30 | // GEANT 4 class implementation file
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| 31 | // ------------------------------------------------------------
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| 32 | //
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| 33 |
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| 34 | #include "G4ErrorSurfaceTrajParam.hh"
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| 35 | #include <iomanip>
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| 36 |
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| 37 | #include "G4ThreeVector.hh"
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| 38 | #include "G4GeometryTolerance.hh"
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| 39 |
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| 40 | //------------------------------------------------------------------------
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| 41 | G4ErrorSurfaceTrajParam::
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| 42 | G4ErrorSurfaceTrajParam( const G4Point3D& pos, const G4Vector3D& mom,
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| 43 | const G4Vector3D& vecV, const G4Vector3D& vecW )
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| 44 | {
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| 45 | SetParameters( pos, mom, vecV, vecW );
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| 46 | }
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| 47 |
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| 48 |
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| 49 | //------------------------------------------------------------------------
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| 50 | G4ErrorSurfaceTrajParam::
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| 51 | G4ErrorSurfaceTrajParam( const G4Point3D& pos, const G4Vector3D& mom,
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| 52 | const G4Plane3D& plane )
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| 53 | {
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| 54 | SetParameters( pos, mom, plane );
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| 55 | }
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| 56 |
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| 57 | //------------------------------------------------------------------------
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| 58 | void G4ErrorSurfaceTrajParam::
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| 59 | SetParameters( const G4Point3D& pos, const G4Vector3D& mom,
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| 60 | const G4Plane3D& plane )
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| 61 | {
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| 62 | //--- Get two perpendicular vectors: first parallel X
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| 63 | // (unless normal is parallel to X, then take Y)
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| 64 |
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| 65 | G4double kCarTolerance =
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| 66 | G4GeometryTolerance::GetInstance()->GetSurfaceTolerance();
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| 67 |
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| 68 | G4ThreeVector Xvec(1.,0.,0.);
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| 69 | G4Vector3D vecV = -Xvec.cross(plane.normal());
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| 70 | if( vecV.mag() < kCarTolerance )
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| 71 | {
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| 72 | G4ThreeVector Zvec(0.,0.,1.);
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| 73 | vecV = Zvec.cross(plane.normal());
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| 74 | }
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| 75 |
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| 76 | G4Vector3D vecW = plane.normal().cross( vecV );
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| 77 |
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| 78 | SetParameters( pos, mom, vecV, vecW );
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| 79 | }
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| 80 |
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| 81 |
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| 82 | //------------------------------------------------------------------------
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| 83 | void G4ErrorSurfaceTrajParam::
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| 84 | SetParameters( const G4Point3D& pos, const G4Vector3D& mom,
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| 85 | const G4Vector3D& vecV, const G4Vector3D& vecW )
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| 86 | {
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| 87 | if( mom.mag() > 0. ) {
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| 88 | fDir = mom;
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| 89 | fDir /= mom.mag();
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| 90 | } else {
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| 91 | fDir = G4Vector3D(0.,0.,0.);
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| 92 | }
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| 93 | fVectorV = vecV / vecV.mag();
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| 94 | fVectorW = vecW / vecW.mag();
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| 95 | fInvP = 1./mom.mag();
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| 96 | G4ThreeVector momv(mom);
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| 97 | //check 3 vectors are ortogonal and right handed
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| 98 |
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| 99 | fPV = momv.project( vecV ).mag();
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| 100 | fPW = momv.project( vecW ).mag();
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| 101 |
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| 102 | G4ThreeVector posv(pos);
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| 103 | fV = posv.project( vecV ).mag();
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| 104 | fW = posv.project( vecW ).mag();
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| 105 | }
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| 106 |
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| 107 |
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| 108 | //------------------------------------------------------------------------
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| 109 | std::ostream& operator<<(std::ostream& out, const G4ErrorSurfaceTrajParam& tp)
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| 110 | {
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| 111 | // long mode = out.setf(std::ios::fixed,std::ios::floatfield);
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| 112 |
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| 113 | // out << tp.theType;
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| 114 | // out << std::setprecision(5) << std::setw(10);
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| 115 | out << " InvP= " << tp.fInvP << " PV= " << tp.fPV
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| 116 | << " PW= " << tp.fPW << " V= " << tp.fV << " W= " << tp.fW << G4endl;
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| 117 | out << " vectorV direction= " << tp.fVectorV
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| 118 | << " vectorW direction= " << tp.fVectorW << G4endl;
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| 119 |
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| 120 | return out;
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| 121 | }
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