// // ******************************************************************** // * 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. * // ******************************************************************** // // G4VTwistedFaceted // // Class description: // // G4VTwistedFaceted is a base class for twisted boxoids: // G4TwistedTrd, G4TwistedTrap and G4TwistedBox // Author: Oliver Link (CERN), 27.10.2004 - Created // -------------------------------------------------------------------- #ifndef G4VTWISTEDFACETED_HH #define G4VTWISTEDFACETED_HH 1 #include "G4VSolid.hh" #include "G4TwoVector.hh" #include "G4TwistTrapAlphaSide.hh" #include "G4TwistTrapParallelSide.hh" #include "G4TwistBoxSide.hh" #include "G4TwistTrapFlatSide.hh" class G4SolidExtentList; class G4ClippablePolygon; /** * @brief G4VTwistedFaceted is a base class for twisted boxoids: * G4TwistedTrd, G4TwistedTrap and G4TwistedBox. */ class G4VTwistedFaceted: public G4VSolid { public: /** * Constructs a faceted solid, given its parameters. * @param[in] pName The solid name. * @param[in] pPhiTwist Twist angle. * @param[in] pDz Half-length along Z axis. * @param[in] pTheta Polar angle of the line joining the centres of the * faces at -/+pDz. * @param[in] pPhi Azimuthal angle of the line joining the centres of the * faces at -/+pDz. * @param[in] pDy1 Half Y length at -pDz. * @param[in] pDx1 Half X length at -pDz, y=-pDy1. * @param[in] pDx2 Half X length at -pDz, y=+pDy1. * @param[in] pDy2 Half Y length at +pDz. * @param[in] pDx3 Half X length at +pDz, y=-pDy2. * @param[in] pDx4 Half X length at +pDz, y=+pDy2. * @param[in] pAlph Angle with respect to the Y axis from centre of side. */ G4VTwistedFaceted(const G4String& pname, // Name of instance G4double PhiTwist, // twist angle G4double pDz, // half z lenght G4double pTheta, // direction between end planes G4double pPhi, // defined by polar & azim. 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 /** * Destructor. */ ~G4VTwistedFaceted() override; /** * Dispatch method for parameterisation replication mechanism and * dimension computation. */ void ComputeDimensions(G4VPVParameterisation*, const G4int, const G4VPhysicalVolume* ) override; /** * Computes the bounding limits of the solid. * @param[out] pMin The minimum bounding limit point. * @param[out] pMax The maximum bounding limit point. */ void BoundingLimits(G4ThreeVector &pMin, G4ThreeVector &pMax) const override; /** * Calculates the minimum and maximum extent of the solid, when under the * specified transform, and within the specified limits. * @param[in] pAxis The axis along which compute the extent. * @param[in] pVoxelLimit The limiting space dictated by voxels. * @param[in] pTransform The internal transformation applied to the solid. * @param[out] pMin The minimum extent value. * @param[out] pMax The maximum extent value. * @returns True if the solid is intersected by the extent region. */ G4bool CalculateExtent(const EAxis pAxis, const G4VoxelLimits& pVoxelLimit, const G4AffineTransform& pTransform, G4double& pMin, G4double& pMax ) const override; /** * Concrete implementations of the expected query interfaces for * solids, as defined in the base class G4VSolid. */ G4double DistanceToIn (const G4ThreeVector& p, const G4ThreeVector& v ) const override; G4double DistanceToIn (const G4ThreeVector& p ) const override; G4double DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v, const G4bool calcnorm = false, G4bool* validnorm = nullptr, G4ThreeVector* n = nullptr ) const override; G4double DistanceToOut(const G4ThreeVector& p) const override; EInside Inside (const G4ThreeVector& p) const override; G4ThreeVector SurfaceNormal(const G4ThreeVector& p) const override; /** * Returns a random point located and uniformly distributed on the * surface of the solid. */ G4ThreeVector GetPointOnSurface() const override; /** * Returning an estimation of the solid volume (capacity) and * surface area, in internal units. */ G4double GetCubicVolume() override; G4double GetSurfaceArea() override; /** * Methods for creating graphical representations (i.e. for visualisation). */ void DescribeYourselfTo (G4VGraphicsScene& scene) const override; G4Polyhedron* CreatePolyhedron () const override; G4Polyhedron* GetPolyhedron () const override; G4VisExtent GetExtent () const override; /** * Streams the object contents to an output stream. */ std::ostream& StreamInfo(std::ostream& os) const override; /** * Accessors. */ inline G4double GetTwistAngle() const { return fPhiTwist; } inline G4double GetDx1 () const { return fDx1 ; } inline G4double GetDx2 () const { return fDx2 ; } inline G4double GetDx3 () const { return fDx3 ; } inline G4double GetDx4 () const { return fDx4 ; } inline G4double GetDy1 () const { return fDy1 ; } inline G4double GetDy2 () const { return fDy2 ; } inline G4double GetDz () const { return fDz ; } inline G4double GetPhi () const { return fPhi ; } inline G4double GetTheta () const { return fTheta ; } inline G4double GetAlpha () const { return fAlph ; } inline G4double Xcoef(G4double u, G4double phi, G4double ftg) const; inline G4double GetValueA(G4double phi) const; inline G4double GetValueB(G4double phi) const; inline G4double GetValueD(G4double phi) const; /** * Returns the type ID, "G4VTwistedFaceted" of the solid. */ G4GeometryType GetEntityType() const override; /** * Fake default constructor for usage restricted to direct object * persistency for clients requiring preallocation of memory for * persistifiable objects. */ G4VTwistedFaceted(__void__&); /** * Copy constructor and assignment operator. */ G4VTwistedFaceted(const G4VTwistedFaceted& rhs); G4VTwistedFaceted& operator=(const G4VTwistedFaceted& rhs); protected: mutable G4bool fRebuildPolyhedron = false; mutable G4Polyhedron* fpPolyhedron = nullptr; // polyhedron for vis G4double fCubicVolume = 0.0; // volume of the solid G4double fSurfaceArea = 0.0; // area of the solid private: /** * Utility used for computing the surface area. */ G4double GetLateralFaceArea(const G4TwoVector& p1, const G4TwoVector& p2, const G4TwoVector& p3, const G4TwoVector& p4) const; /** * Utility used in constructor for creating the surfaces. */ void CreateSurfaces(); 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 fDx ; // maximum side in x G4double fDy ; // maximum side in y G4double fAlph ; G4double fTAlph ; // std::tan(fAlph) G4double fdeltaX ; G4double fdeltaY ; G4double fPhiTwist; // twist angle ( dphi in surface equation) G4VTwistSurface* fLowerEndcap ; // surface of -ve z G4VTwistSurface* fUpperEndcap ; // surface of +ve z G4VTwistSurface* fSide0 ; // Twisted Side at phi = 0 deg G4VTwistSurface* fSide90 ; // Twisted Side at phi = 90 deg G4VTwistSurface* fSide180 ; // Twisted Side at phi = 180 deg G4VTwistSurface* fSide270 ; // Twisted Side at phi = 270 deg }; //===================================================================== inline G4double G4VTwistedFaceted::GetValueA(G4double phi) const { return ( fDx4 + fDx2 + ( fDx4 - fDx2 ) * ( 2 * phi ) / fPhiTwist ) ; } inline G4double G4VTwistedFaceted::GetValueD(G4double phi) const { return ( fDx3 + fDx1 + ( fDx3 - fDx1 ) * ( 2 * phi ) / fPhiTwist ) ; } inline G4double G4VTwistedFaceted::GetValueB(G4double phi) const { return ( fDy2 + fDy1 + ( fDy2 - fDy1 ) * ( 2 * phi ) / fPhiTwist ) ; } inline G4double G4VTwistedFaceted::Xcoef(G4double u, G4double phi, G4double ftg) const { return GetValueA(phi)/2. + (GetValueD(phi)-GetValueA(phi))/4. - u*( ( GetValueD(phi)-GetValueA(phi) ) / ( 2 * GetValueB(phi) ) - ftg ); } #endif