Gabriele Cosmo
89 lines
3.4 KiB
Plaintext
89 lines
3.4 KiB
Plaintext
//
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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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// Implementation of inline methods of G4TwistTrapParallelSide.
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// --------------------------------------------------------------------
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inline
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G4double G4TwistTrapParallelSide::GetValueB(G4double phi)
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{
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return ( fDy2plus1 + fDy2minus1 * ( 2 * phi ) / fPhiTwist ) ;
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}
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inline
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G4double G4TwistTrapParallelSide::Xcoef(G4double phi)
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{
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return GetValueB(phi)/2. ;
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}
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inline G4ThreeVector
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G4TwistTrapParallelSide::
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SurfacePoint( G4double phi, G4double u, G4bool isGlobal )
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{
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// function to calculate a point on the surface, given by parameters phi,u
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G4ThreeVector SurfPoint ( u*std::cos(phi) - Xcoef(phi)*std::sin(phi)
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+ fdeltaX*phi/fPhiTwist,
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u*std::sin(phi) + Xcoef(phi)*std::cos(phi)
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+ fdeltaY*phi/fPhiTwist,
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2*fDz*phi/fPhiTwist );
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if (isGlobal) { return (fRot * SurfPoint + fTrans); }
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return SurfPoint;
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}
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inline
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G4double G4TwistTrapParallelSide::GetBoundaryMin(G4double phi)
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{
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return -(fPhiTwist*(fDx2 + fDx4 - fDy2plus1*fTAlph)
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+ 2*fDx4minus2*phi - 2*fDy2minus1*fTAlph*phi)/(2.*fPhiTwist) ;
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}
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inline
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G4double G4TwistTrapParallelSide::GetBoundaryMax(G4double phi)
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{
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return (fDx2 + fDx4 + fDy2plus1*fTAlph)/ 2.
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+ ((fDx4minus2 + fDy2minus1*fTAlph)*phi)/fPhiTwist ;
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}
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inline
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G4double G4TwistTrapParallelSide::GetSurfaceArea()
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{
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return 2*fDx4plus2*fDz ;
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}
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inline
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G4ThreeVector G4TwistTrapParallelSide::NormAng( G4double phi, G4double u )
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{
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// function to calculate the norm at a given point on the surface
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// replace a1-d1
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G4ThreeVector nvec(-2*fDz*std::sin(phi) ,
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2*fDz*std::cos(phi) ,
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-(fDy2minus1 + fPhiTwist*u + fdeltaY*std::cos(phi)
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-fdeltaX*std::sin(phi))) ;
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return nvec.unit();
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}
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