// // ******************************************************************** // * 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. * // ******************************************************************** // // G4EllipticalTube // // Class description: // // A tube with elliptical cross section: // // G4EllipticalTube( const G4String& name, // G4double Dx, // G4double Dy, // G4double Dz ) // // The equation of the lateral surface is: (x/dx)^2 + (y/dy)^2 = 1 // Author: David C. Williams (UCSC), 29.03.2000 - First implementation // Evgueni Tcherniaev (CERN), 23.12.2019 - Revised // -------------------------------------------------------------------- #ifndef G4ELLIPTICALTUBE_HH #define G4ELLIPTICALTUBE_HH #include "G4GeomTypes.hh" #if defined(G4GEOM_USE_USOLIDS) #define G4GEOM_USE_UELLIPTICALTUBE 1 #endif #if (defined(G4GEOM_USE_UELLIPTICALTUBE) && defined(G4GEOM_USE_SYS_USOLIDS)) #define G4UEllipticalTube G4EllipticalTube #include "G4UEllipticalTube.hh" #else #include "G4VSolid.hh" #include "G4Polyhedron.hh" /** * @brief G4EllipticalTube is a tube with elliptical cross section. * The equation of the lateral surface is: (x/dx)^2 + (y/dy)^2 = 1. */ class G4EllipticalTube : public G4VSolid { public: /** * Constructs an elliptical tube, given its parameters. * @param[in] name The solid name. * @param[in] Dx Half length of axis along X. * @param[in] Dy Half length of axis along Y. * @param[in] Dz Half length in Z. */ G4EllipticalTube( const G4String& name, G4double Dx, G4double Dy, G4double Dz ); /** * Destructor. */ ~G4EllipticalTube() override; /** * Accessors. */ inline G4double GetDx() const; inline G4double GetDy() const; inline G4double GetDz() const; /** * Modifiers. */ inline void SetDx( G4double Dx ); inline void SetDy( G4double Dy ); inline void SetDz( G4double Dz ); /** * 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. */ EInside Inside( const G4ThreeVector& p ) const override; G4ThreeVector SurfaceNormal( const G4ThreeVector& p ) const override; 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; /** * Returns the type ID, "G4EllipticalTube" of the solid. */ G4GeometryType GetEntityType() const override; /** * Makes a clone of the object for use in multi-treading. * @returns A pointer to the new cloned allocated solid. */ G4VSolid* Clone() const override; /** * Streams the object contents to an output stream. */ std::ostream& StreamInfo(std::ostream& os) const override; /** * Returning an estimation of the solid volume (capacity) and * surface area, in internal units. */ G4double GetCubicVolume() override; G4double GetSurfaceArea() override; /** * Returns a random point located and uniformly distributed on the * surface of the solid. */ G4ThreeVector GetPointOnSurface() const override; /** * Methods for creating graphical representations (i.e. for visualisation). */ G4Polyhedron* CreatePolyhedron() const override; G4Polyhedron* GetPolyhedron() const override; void DescribeYourselfTo( G4VGraphicsScene& scene ) const override; G4VisExtent GetExtent() const override; /** * Fake default constructor for usage restricted to direct object * persistency for clients requiring preallocation of memory for * persistifiable objects. */ G4EllipticalTube(__void__&); /** * Copy constructor and assignment operator. */ G4EllipticalTube(const G4EllipticalTube& rhs); G4EllipticalTube& operator=(const G4EllipticalTube& rhs); private: /** * Checks parameters and sets pre-calculated values. */ void CheckParameters(); /** * Algorithm for SurfaceNormal() following the original * specification for points not on the surface. */ G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p ) const; /** * Calculates the surface area and caches it. */ G4double GetCachedSurfaceArea() const; private: G4double halfTolerance; G4double fDx; // semi-axis in X G4double fDy; // semi-axis in Y G4double fDz; // half length in Z G4double fCubicVolume = 0.0; // volume G4double fSurfaceArea = 0.0; // surface area /** Cached pre-calculated values. */ G4double fRsph; // R of bounding sphere G4double fDDx; // Dx squared G4double fDDy; // Dy squared G4double fSx; // X scale factor G4double fSy; // Y scale factor G4double fR; // resulting Radius, after scaling elipse to circle G4double fQ1; // distance approximation : dist = Q1*(x^2 + y^2) - Q2 G4double fQ2; // distance approximation : dist = Q1*(x^2 + y^2) - Q2 G4double fScratch; // half length of scratching segment squared mutable G4bool fRebuildPolyhedron = false; mutable G4Polyhedron* fpPolyhedron = nullptr; }; #include "G4EllipticalTube.icc" #endif // defined(G4GEOM_USE_UELLIPTICALTUBE) && defined(G4GEOM_USE_SYS_USOLIDS) #endif // G4ELLIPTICALTUBE_HH