Gabriele Cosmo
222 lines
8.6 KiB
C++
222 lines
8.6 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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// G4TwistBoxSide
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//
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// Class description:
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//
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// G4TwistBoxSide describes a twisted boundary surface for a trapezoid.
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// Author: Oliver Link (CERN), 27.10.2004 - Created
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// --------------------------------------------------------------------
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#ifndef G4TWISTBOXSIDE_HH
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#define G4TWISTBOXSIDE_HH
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#include "G4VTwistSurface.hh"
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#include <vector>
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/**
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* @brief G4TwistBoxSide describes a twisted boundary surface for a trapezoid.
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*/
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class G4TwistBoxSide : public G4VTwistSurface
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{
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public:
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/**
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* Constructs a trapezoid twisted boundary surface, given its parameters.
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* @param[in] name The surface name.
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* @param[in] PhiTwist The twist angle.
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* @param[in] pDz Half z length.
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* @param[in] pTheta Direction between end planes - polar angle.
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* @param[in] pPhi Direction between end planes - azimuthal angle.
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* @param[in] pDy1 Half y length at -pDz.
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* @param[in] pDx1 Half x length at -pDz,-pDy.
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* @param[in] pDx2 Half x length at -pDz,+pDy.
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* @param[in] pDy2 Half y length at +pDz.
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* @param[in] pDx3 Half x length at +pDz,-pDy.
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* @param[in] pDx4 Half x length at +pDz,+pDy.
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* @param[in] pAlph Tilt angle at +pDz.
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* @param[in] AngleSide Parity.
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*/
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G4TwistBoxSide(const G4String& name,
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G4double PhiTwist, // twist angle
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G4double pDz, // half z length
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G4double pTheta, // direction between end planes
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G4double pPhi, // by polar and azimuthal angles
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G4double pDy1, // half y length at -pDz
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G4double pDx1, // half x length at -pDz,-pDy
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G4double pDx2, // half x length at -pDz,+pDy
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G4double pDy2, // half y length at +pDz
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G4double pDx3, // half x length at +pDz,-pDy
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G4double pDx4, // half x length at +pDz,+pDy
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G4double pAlph, // tilt angle at +pDz
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G4double AngleSide // parity
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);
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/**
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* Default destructor.
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*/
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~G4TwistBoxSide() 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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* 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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*/
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G4TwistBoxSide(__void__&);
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private:
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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 SetBoundaries() override;
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/**
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* Finds the closest point on surface for a given point 'p', returning
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* 'phi' and 'u'.
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*/
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void GetPhiUAtX(const G4ThreeVector& p, G4double& phi, G4double& u);
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/**
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* Returns projection on surface of a given point 'p'.
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*/
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G4ThreeVector ProjectPoint(const G4ThreeVector& p,
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G4bool isglobal = false);
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/**
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* Returns point on surface given 'phi' and 'u'.
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*/
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inline G4ThreeVector SurfacePoint(G4double phi, G4double u,
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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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inline G4double GetValueA(G4double phi);
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inline G4double GetValueB(G4double phi);
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inline G4ThreeVector NormAng(G4double phi, G4double u);
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inline G4double Xcoef(G4double u, G4double phi);
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// To calculate the w(u) function
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private:
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G4double fTheta;
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G4double fPhi ;
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G4double fDy1;
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G4double fDx1;
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G4double fDx2;
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G4double fDy2;
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G4double fDx3;
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G4double fDx4;
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G4double fDz; // Half-length along the z axis
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G4double fAlph;
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G4double fTAlph; // std::tan(fAlph)
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G4double fPhiTwist; // twist angle ( dphi in surface equation)
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G4double fAngleSide;
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G4double fdeltaX;
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G4double fdeltaY;
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G4double fDx4plus2; // fDx4 + fDx2 == a2/2 + a1/2
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G4double fDx4minus2; // fDx4 - fDx2 -
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G4double fDx3plus1; // fDx3 + fDx1 == d2/2 + d1/2
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G4double fDx3minus1; // fDx3 - fDx1 -
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G4double fDy2plus1; // fDy2 + fDy1 == b2/2 + b1/2
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G4double fDy2minus1; // fDy2 - fDy1 -
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G4double fa1md1; // 2 fDx2 - 2 fDx1 == a1 - d1
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G4double fa2md2; // 2 fDx4 - 2 fDx3
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};
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//========================================================
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// inline functions
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//========================================================
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#include "G4TwistBoxSide.icc"
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#endif
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