// // ******************************************************************** // * 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. * // ******************************************************************** // // G4Trd // // Class description: // // A G4Trd is a trapezoid with the x and y dimensions varying along z // functions: // // Member Data: // // fDx1 Half-length along x at the surface positioned at -dz // fDx2 Half-length along x at the surface positioned at +dz // fDy1 Half-length along y at the surface positioned at -dz // fDy2 Half-length along y at the surface positioned at +dz // fDz Half-length along z axis // Author: Paul Kent (CERN), 12.01.1995 - Code converted to thick geometry // -------------------------------------------------------------------- #ifndef G4TRD_HH #define G4TRD_HH #include "G4GeomTypes.hh" #if defined(G4GEOM_USE_USOLIDS) #define G4GEOM_USE_UTRD 1 #endif #if defined(G4GEOM_USE_UTRD) #define G4UTrd G4Trd #include "G4UTrd.hh" #else #include "G4CSGSolid.hh" #include "G4Polyhedron.hh" /** * @brief G4Trd is a trapezoid with the X and Y dimensions varying along Z. */ class G4Trd : public G4CSGSolid { public: /** * Constructs a trapezoid with name, and half lengths. * @param[in] pName The name of the solid. * @param[in] pdx1 Half-length along X at the surface positioned at -dz. * @param[in] pdx2 Half-length along X at the surface positioned at +dz. * @param[in] pdy1 Half-length along Y at the surface positioned at -dz. * @param[in] pdy2 Half-length along Y at the surface positioned at +dz. * @param[in] pdz Half-length along Z axis. */ G4Trd( const G4String& pName, G4double pdx1, G4double pdx2, G4double pdy1, G4double pdy2, G4double pdz ); /** * Default destructor. */ ~G4Trd() override = default; /** * Accessors. */ inline G4double GetXHalfLength1() const; inline G4double GetXHalfLength2() const; inline G4double GetYHalfLength1() const; inline G4double GetYHalfLength2() const; inline G4double GetZHalfLength() const; /** * Modifiers. */ inline void SetXHalfLength1(G4double val); inline void SetXHalfLength2(G4double val); inline void SetYHalfLength1(G4double val); inline void SetYHalfLength2(G4double val); inline void SetZHalfLength(G4double val); /** * Sets all parameters, as for constructor. Checks and sets half-widths. */ void SetAllParameters ( G4double pdx1, G4double pdx2, G4double pdy1, G4double pdy2, G4double pdz ); /** * Returning an estimation of the solid volume (capacity) and * surface area, in internal units. */ G4double GetCubicVolume() override; G4double GetSurfaceArea() override; /** * Dispatch method for parameterisation replication mechanism and * dimension computation. */ void ComputeDimensions( G4VPVParameterisation* p, const G4int n, const G4VPhysicalVolume* pRep ) 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. */ 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, "G4Trd" of the solid. */ G4GeometryType GetEntityType() const override; /** * Returns a random point located and uniformly distributed on the * surface of the solid. */ G4ThreeVector GetPointOnSurface() const override; /** * Returns true as the solid has only planar faces. */ G4bool IsFaceted() 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; /** * Methods for creating graphical representations (i.e. for visualisation). */ void DescribeYourselfTo (G4VGraphicsScene& scene) const override; G4Polyhedron* CreatePolyhedron () const override; /** * Fake default constructor for usage restricted to direct object * persistency for clients requiring preallocation of memory for * persistifiable objects. */ G4Trd(__void__&); /** * Copy constructor and assignment operator. */ G4Trd(const G4Trd& rhs); G4Trd& operator=(const G4Trd& rhs); private: /** * Checks the input parameters. */ void CheckParameters(); /** * Sets the side planes. */ void MakePlanes(); /** * Algorithm for SurfaceNormal() following the original specification * for points not on the surface. */ G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p ) const; private: G4double halfCarTolerance; G4double fDx1,fDx2,fDy1,fDy2,fDz,fHx,fHy; struct { G4double a,b,c,d; } fPlanes[4]; }; #include "G4Trd.icc" #endif #endif