Gabriele Cosmo
256 lines
9.8 KiB
C++
256 lines
9.8 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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// G4TwistTubsSide
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//
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// Class description:
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//
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// Class describing a twisted boundary surface for a cylinder.
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// Author: Kotoyo Hoshina (Chiba University), 01.08.2002 - Created.
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// Oliver Link (CERN), 13.11.2003 - Integration in Geant4
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// from original version in Jupiter-2.5.02 application.
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// --------------------------------------------------------------------
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#ifndef G4TWISTTUBSSIDE_HH
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#define G4TWISTTUBSSIDE_HH
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#include "G4VTwistSurface.hh"
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/**
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* @brief G4TwistTubsFlatSide describes a twisted boundary surface for
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* a cylinder.
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*/
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class G4TwistTubsSide : public G4VTwistSurface
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{
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public:
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/**
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* Constructs a cylinder twisted boundary surface, given its parameters.
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* @param[in] name The surface name.
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* @param[in] rot Rotation: 0.5*(phi-width segment).
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* @param[in] tlate Translation.
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* @param[in] handedness Orientation: R-hand = 1, L-hand = -1.
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* @param[in] kappa Kappa=tan(TwistAngle/2)/fZHalfLen.
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* @param[in] axis0 X axis.
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* @param[in] axis1 Z axis.
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* @param[in] axis0min Minimum in X.
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* @param[in] axis1min Minimum in Z.
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* @param[in] axis0max Maximum in X.
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* @param[in] axis1max Maximum in Z.
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*/
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G4TwistTubsSide(const G4String& name,
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const G4RotationMatrix& rot, // 0.5*(phi-width segment)
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const G4ThreeVector& tlate,
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G4int handedness, // R-hand = 1, L-hand = -1
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const G4double kappa, // tan(TwistAngle/2)/fZHalfLen
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const EAxis axis0 = kXAxis,
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const EAxis axis1 = kZAxis,
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G4double axis0min = -kInfinity,
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G4double axis1min = -kInfinity,
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G4double axis0max = kInfinity,
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G4double axis1max = kInfinity );
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/**
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* Alternative Construct for a cylinder twisted boundary surface.
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* @param[in] name The surface name.
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* @param[in] EndInnerRadius Inner-hype radius at z=0.
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* @param[in] EndOuterRadius Outer-hype radius at z=0.
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* @param[in] DPhi Phi angle.
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* @param[in] EndPhi Total Phi.
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* @param[in] EndZ Z length.
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* @param[in] InnerRadius Inner radius.
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* @param[in] OuterRadius Outer radius.
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* @param[in] Kappa Kappa=tan(TwistAngle/2)/fZHalfLen.
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* @param[in] handedness Orientation: R-hand = 1, L-hand = -1.
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*/
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G4TwistTubsSide(const G4String& name,
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G4double EndInnerRadius[2],
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G4double EndOuterRadius[2],
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G4double DPhi,
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G4double EndPhi[2],
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G4double EndZ[2],
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G4double InnerRadius,
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G4double OuterRadius,
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G4double Kappa,
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G4int handedness);
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/**
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* Default destructor.
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*/
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~G4TwistTubsSide() override = default;
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/**
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* Returns a normal vector at a surface (or very close to the surface)
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* point at 'p'.
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* @param[in] p The point where computing the normal.
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* @param[in] isGlobal If true, it returns the normal in global coordinates.
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* @returns The normal vector.
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*/
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G4ThreeVector GetNormal(const G4ThreeVector& p,
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G4bool isGlobal = false) override ;
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/**
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* Returns the distance to surface, given point 'gp' and direction 'gv'.
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* @param[in] gp The point from where computing the distance.
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* @param[in] gv The direction along which computing the distance.
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* @param[out] gxx Vector of global points based on number of solutions.
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* @param[out] distance The distance vector based on number of solutions.
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* @param[out] areacode The location vector based on number of solutions.
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* @param[out] isvalid Validity vector based on number of solutions.
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* @param[in] validate Adopted validation criteria.
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* @returns The number of solutions.
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*/
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G4int DistanceToSurface(const G4ThreeVector& gp,
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const G4ThreeVector& gv,
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G4ThreeVector gxx[],
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G4double distance[],
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G4int areacode[],
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G4bool isvalid[],
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EValidate validate = kValidateWithTol) override;
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/**
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* Returns the safety distance to surface, given point 'gp'.
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* @param[in] gp The point from where computing the safety distance.
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* @param[out] gxx Vector of global points based on number of solutions.
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* @param[out] distance The distance vector based on number of solutions.
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* @param[out] areacode The location vector based on number of solutions.
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* @returns The number of solutions.
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*/
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G4int DistanceToSurface(const G4ThreeVector& gp,
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G4ThreeVector gxx[],
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G4double distance[],
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G4int areacode[]) override;
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/**
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* Get projection at p.z() on the surface.
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*/
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inline G4ThreeVector ProjectAtPXPZ(const G4ThreeVector& p,
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G4bool isglobal = false) const ;
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G4TwistTubsSide(__void__&);
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// Fake default constructor for usage restricted to direct object
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// persistency for clients requiring preallocation of memory for
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// persistifiable objects.
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private:
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/**
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* Returns point on surface given 'x' and 'z'.
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*/
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inline G4ThreeVector SurfacePoint(G4double x, G4double z,
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G4bool isGlobal = false) override ;
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/**
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* Internal accessors.
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*/
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inline G4double GetBoundaryMin(G4double phi) override ;
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inline G4double GetBoundaryMax(G4double phi) override ;
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inline G4double GetSurfaceArea() override ;
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void GetFacets( G4int m, G4int n, G4double xyz[][3],
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G4int faces[][4], G4int iside ) override ;
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/**
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* Internal method to compute the distance to a plane.
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*/
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G4double DistanceToPlane(const G4ThreeVector& p,
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const G4ThreeVector& A,
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const G4ThreeVector& B,
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const G4ThreeVector& C,
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const G4ThreeVector& D,
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const G4int parity,
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G4ThreeVector& xx,
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G4ThreeVector& n);
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/**
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* Returns the area code for point 'xx' using or not surface tolerance.
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*/
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G4int GetAreaCode(const G4ThreeVector& xx,
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G4bool withTol = true) override;
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/**
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* Setters.
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*/
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void SetCorners() override;
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void SetCorners( G4double endInnerRad[2],
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G4double endOuterRad[2],
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G4double endPhi[2],
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G4double endZ[2] ) ;
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void SetBoundaries() override;
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private:
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G4double fKappa; // std::tan(TwistedAngle/2)/HalfLenZ;
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};
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//========================================================
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// inline functions
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//========================================================
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inline
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G4ThreeVector G4TwistTubsSide::ProjectAtPXPZ(const G4ThreeVector& p,
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G4bool isglobal) const
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{
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// Get Rho at p.z() on Hyperbolic Surface.
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G4ThreeVector tmpp;
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if (isglobal) { tmpp = fRot.inverse()*p - fTrans; }
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else { tmpp = p; }
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G4ThreeVector xx(p.x(), p.x() * fKappa * p.z(), p.z());
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if (isglobal) { return (fRot * xx + fTrans); }
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return xx;
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}
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inline
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G4ThreeVector
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G4TwistTubsSide::SurfacePoint(G4double x, G4double z, G4bool isGlobal)
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{
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G4ThreeVector SurfPoint( x , x * fKappa * z , z ) ;
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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 G4TwistTubsSide::GetBoundaryMin(G4double)
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{
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return fAxisMin[0] ; // inner radius at z = 0
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}
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inline
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G4double G4TwistTubsSide::GetBoundaryMax(G4double)
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{
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return fAxisMax[0] ; // outer radius at z = 0
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}
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inline
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G4double G4TwistTubsSide::GetSurfaceArea()
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{
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// approximation only
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return ( fAxisMax[0] - fAxisMin[0] ) * ( fAxisMax[1] - fAxisMin[1] ) ;
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}
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#endif
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