// // ******************************************************************** // * License and Disclaimer * // * * // * The Geant4 software is copyright of the Copyright Holders of * // * the Geant4 Collaboration. It is provided under the terms and * // * conditions of the Geant4 Software License, included in the file * // * LICENSE and available at http://cern.ch/geant4/license . These * // * include a list of copyright holders. * // * * // * Neither the authors of this software system, nor their employing * // * institutes,nor the agencies providing financial support for this * // * work make any representation or warranty, express or implied, * // * regarding this software system or assume any liability for its * // * use. Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // // G4TwistTrapParallelSide // // Class description: // // Class describing a twisted boundary surface for a trapezoid. // Author: Oliver Link (CERN), 27.10.2004 - Created // -------------------------------------------------------------------- #ifndef G4TWISTTRAPPARALLELSIDE_HH #define G4TWISTTRAPPARALLELSIDE_HH #include "G4VTwistSurface.hh" #include /** * @brief G4TwistTrapParallelSide describes a twisted boundary surface for * a trapezoid. */ class G4TwistTrapParallelSide : public G4VTwistSurface { public: /** * Constructs a trapezoid twisted boundary surface, given its parameters. * @param[in] name The surface name. * @param[in] PhiTwist The twist angle. * @param[in] pDz Half z length. * @param[in] pTheta Direction between end planes - polar angle. * @param[in] pPhi Direction between end planes - azimuthal angle. * @param[in] pDy1 Half y length at -pDz. * @param[in] pDx1 Half x length at -pDz,-pDy. * @param[in] pDx2 Half x length at -pDz,+pDy. * @param[in] pDy2 Half y length at +pDz. * @param[in] pDx3 Half x length at +pDz,-pDy. * @param[in] pDx4 Half x length at +pDz,+pDy. * @param[in] pAlph Tilt angle at +pDz. * @param[in] AngleSide Parity. */ G4TwistTrapParallelSide(const G4String& name, G4double PhiTwist, // twist angle G4double pDz, // half z lenght G4double pTheta, // direction between end planes G4double pPhi, // by polar and azimutal angles G4double pDy1, // half y length at -pDz G4double pDx1, // half x length at -pDz,-pDy G4double pDx2, // half x length at -pDz,+pDy G4double pDy2, // half y length at +pDz G4double pDx3, // half x length at +pDz,-pDy G4double pDx4, // half x length at +pDz,+pDy G4double pAlph, // tilt angle at +pDz G4double AngleSide // parity ); /** * Default destructor. */ ~G4TwistTrapParallelSide() override = default; /** * Returns a normal vector at a surface (or very close to the surface) * point at 'p'. * @param[in] p The point where computing the normal. * @param[in] isGlobal If true, it returns the normal in global coordinates. * @returns The normal vector. */ G4ThreeVector GetNormal(const G4ThreeVector& p, G4bool isGlobal = false) override ; /** * Returns the distance to surface, given point 'gp' and direction 'gv'. * @param[in] gp The point from where computing the distance. * @param[in] gv The direction along which computing the distance. * @param[out] gxx Vector of global points based on number of solutions. * @param[out] distance The distance vector based on number of solutions. * @param[out] areacode The location vector based on number of solutions. * @param[out] isvalid Validity vector based on number of solutions. * @param[in] validate Adopted validation criteria. * @returns The number of solutions. */ G4int DistanceToSurface(const G4ThreeVector& gp, const G4ThreeVector& gv, G4ThreeVector gxx[], G4double distance[], G4int areacode[], G4bool isvalid[], EValidate validate = kValidateWithTol) override; /** * Returns the safety distance to surface, given point 'gp'. * @param[in] gp The point from where computing the safety distance. * @param[out] gxx Vector of global points based on number of solutions. * @param[out] distance The distance vector based on number of solutions. * @param[out] areacode The location vector based on number of solutions. * @returns The number of solutions. */ G4int DistanceToSurface(const G4ThreeVector& gp, G4ThreeVector gxx[], G4double distance[], G4int areacode[]) override; /** * Fake default constructor for usage restricted to direct object * persistency for clients requiring preallocation of memory for * persistifiable objects. */ G4TwistTrapParallelSide(__void__&); private: /** * Returns the area code for point 'xx' using or not surface tolerance. */ G4int GetAreaCode(const G4ThreeVector& xx, G4bool withTol = true) override; /** * Setters. */ void SetCorners() override; void SetBoundaries() override; /** * Finds the closest point on surface for a given point 'p', returning * 'phi' and 'u'. */ void GetPhiUAtX(const G4ThreeVector& p, G4double& phi, G4double& u); /** * Returns projection on surface of a given point 'p'. */ G4ThreeVector ProjectPoint(const G4ThreeVector& p, G4bool isglobal = false); /** * Returns point on surface given 'phi' and 'u'. */ inline G4ThreeVector SurfacePoint(G4double phi, G4double u, G4bool isGlobal = false) override; /** * Internal accessors. */ inline G4double GetBoundaryMin(G4double phi) override; inline G4double GetBoundaryMax(G4double phi) override; inline G4double GetSurfaceArea() override; void GetFacets( G4int m, G4int n, G4double xyz[][3], G4int faces[][4], G4int iside ) override; inline G4ThreeVector NormAng(G4double phi, G4double u); inline G4double GetValueB(G4double phi) ; inline G4double Xcoef(G4double u); // To calculate the w(u) function private: G4double fTheta; G4double fPhi ; G4double fDy1; G4double fDx1; G4double fDx2; G4double fDy2; G4double fDx3; G4double fDx4; G4double fDz; // Half-length along the z axis G4double fAlph; G4double fTAlph; // std::tan(fAlph) G4double fPhiTwist; // twist angle ( dphi in surface equation) G4double fAngleSide; G4double fdeltaX; G4double fdeltaY; G4double fDx4plus2; // fDx4 + fDx2 == a2/2 + a1/2 G4double fDx4minus2; // fDx4 - fDx2 - G4double fDx3plus1; // fDx3 + fDx1 == d2/2 + d1/2 G4double fDx3minus1; // fDx3 - fDx1 - G4double fDy2plus1; // fDy2 + fDy1 == b2/2 + b1/2 G4double fDy2minus1; // fDy2 - fDy1 - G4double fa1md1; // 2 fDx2 - 2 fDx1 == a1 - d1 G4double fa2md2; // 2 fDx4 - 2 fDx3 }; //======================================================== // inline functions //======================================================== #include "G4TwistTrapParallelSide.icc" #endif