Gabriele Cosmo
126 lines
4.5 KiB
C++
126 lines
4.5 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class implementation file
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// ------------------------------------------------------------
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//
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#include "G4ErrorSurfaceTrajParam.hh"
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#include <iomanip>
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#include "G4ThreeVector.hh"
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#include "G4GeometryTolerance.hh"
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//------------------------------------------------------------------------
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G4ErrorSurfaceTrajParam::
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G4ErrorSurfaceTrajParam( const G4Point3D& pos, const G4Vector3D& mom,
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const G4Vector3D& vecV, const G4Vector3D& vecW )
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{
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SetParameters( pos, mom, vecV, vecW );
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}
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//------------------------------------------------------------------------
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G4ErrorSurfaceTrajParam::
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G4ErrorSurfaceTrajParam( const G4Point3D& pos, const G4Vector3D& mom,
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const G4Plane3D& plane )
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{
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SetParameters( pos, mom, plane );
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}
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//------------------------------------------------------------------------
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void G4ErrorSurfaceTrajParam::
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SetParameters( const G4Point3D& pos, const G4Vector3D& mom,
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const G4Plane3D& plane )
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{
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//--- Get two perpendicular vectors: first parallel X
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// (unless normal is parallel to X, then take Y)
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G4double kCarTolerance =
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G4GeometryTolerance::GetInstance()->GetSurfaceTolerance();
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G4ThreeVector Xvec(1.,0.,0.);
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G4Vector3D vecV = -Xvec.cross(plane.normal());
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if( vecV.mag() < kCarTolerance )
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{
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G4ThreeVector Zvec(0.,0.,1.);
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vecV = Zvec.cross(plane.normal());
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}
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G4Vector3D vecW = plane.normal().cross( vecV );
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SetParameters( pos, mom, vecV, vecW );
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}
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//------------------------------------------------------------------------
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void G4ErrorSurfaceTrajParam::
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SetParameters( const G4Point3D& pos, const G4Vector3D& mom,
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const G4Vector3D& vecV, const G4Vector3D& vecW )
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{
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if( mom.mag() > 0. ) {
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fDir = mom;
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fDir /= mom.mag();
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} else {
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fDir = G4Vector3D(0.,0.,0.);
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}
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fVectorV = vecV / vecV.mag();
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fVectorW = vecW / vecW.mag();
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fInvP = 1./mom.mag();
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G4ThreeVector momv(mom);
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//check 3 vectors are ortogonal and right handed
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// now all 4 scalar memeber variables retain the signs
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// fPV = momv.project( vecV ).mag();
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// fPW = momv.project( vecW ).mag();
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fPV = momv.dot( vecV );
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fPW = momv.dot( vecW );
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G4ThreeVector posv(pos);
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// fV = posv.project( vecV ).mag();
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// fW = posv.project( vecW ).mag();
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fV = posv.dot( vecV );
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fW = posv.dot( vecW );
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}
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//------------------------------------------------------------------------
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std::ostream& operator<<(std::ostream& out, const G4ErrorSurfaceTrajParam& tp)
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{
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// long mode = out.setf(std::ios::fixed,std::ios::floatfield);
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// out << tp.theType;
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// out << std::setprecision(5) << std::setw(10);
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out << " InvP= " << tp.fInvP << " PV= " << tp.fPV
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<< " PW= " << tp.fPW << " V= " << tp.fV << " W= " << tp.fW << G4endl;
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out << " vectorV direction= " << tp.fVectorV
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<< " vectorW direction= " << tp.fVectorW << G4endl;
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return out;
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}
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