Gabriele Cosmo
277 lines
10 KiB
C++
277 lines
10 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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// G4Hype
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//
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// Class description:
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//
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// This class implements a tube with hyperbolic profile.
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// It describes an hyperbolic volume with curved sides parallel to
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// the z-axis. The solid has a specified half-length along the z axis,
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// about which it is centered, and a given minimum and maximum radius.
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// A minimum radius of 0 signifies a filled Hype (with hyperbolical
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// inner surface). To have a filled Hype the user must specify
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// inner radius = 0 AND inner stereo angle = 0.
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// The inner and outer hyperbolical surfaces can have different
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// stereo angles. A stereo angle of 0 gives a cylindrical surface.
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// Authors: Ernesto Lamanna & Francesco Safai Tehrani - Created
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// Rome, INFN & University of Rome "La Sapienza", 09.06.1998.
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// --------------------------------------------------------------------
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#ifndef G4HYPE_HH
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#define G4HYPE_HH
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#include "G4GeomTypes.hh"
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#if defined(G4GEOM_USE_USOLIDS)
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#define G4GEOM_USE_UHYPE 1
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#endif
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#if (defined(G4GEOM_USE_UHYPE) && defined(G4GEOM_USE_SYS_USOLIDS))
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#define G4UHype G4Hype
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#include "G4UHype.hh"
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#else
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#include "G4VSolid.hh"
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#include "G4ThreeVector.hh"
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#include "G4Polyhedron.hh"
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class G4SolidExtentList;
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class G4ClippablePolygon;
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/**
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* @brief G4Hype is a tube with hyperbolic profile; it describes an hyperbolic
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* volume with curved sides parallel to the Z axis. The solid has a specified
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* half-length along the Z axis, about which it is centered, and a given
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* minimum and maximum radii.
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*/
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class G4Hype : public G4VSolid
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{
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public:
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/**
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* Constructs a hyperbolic tube, given its parameters.
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* @param[in] pName The solid name.
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* @param[in] newInnerRadius Inner radius.
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* @param[in] newOuterRadius Outer radius.
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* @param[in] newInnerStereo Inner stereo angle in radians.
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* @param[in] newOuterStereo Outer stereo angle in radians.
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* @param[in] newHalfLenZ Half length in Z.
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*/
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G4Hype(const G4String& pName,
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G4double newInnerRadius,
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G4double newOuterRadius,
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G4double newInnerStereo,
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G4double newOuterStereo,
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G4double newHalfLenZ);
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/**
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* Destructor.
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*/
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~G4Hype() override;
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/**
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* Accessors.
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*/
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inline G4double GetInnerRadius () const;
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inline G4double GetOuterRadius () const;
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inline G4double GetZHalfLength () const;
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inline G4double GetInnerStereo () const;
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inline G4double GetOuterStereo () const;
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/**
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* Modifiers.
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*/
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void SetInnerRadius (G4double newIRad);
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void SetOuterRadius (G4double newORad);
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void SetZHalfLength (G4double newHLZ);
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void SetInnerStereo (G4double newISte);
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void SetOuterStereo (G4double newOSte);
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/**
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* Dispatch method for parameterisation replication mechanism and
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* dimension computation.
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*/
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void ComputeDimensions(G4VPVParameterisation* p,
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const G4int n,
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const G4VPhysicalVolume* pRep) override;
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/**
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* Computes the bounding limits of the solid.
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* @param[out] pMin The minimum bounding limit point.
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* @param[out] pMax The maximum bounding limit point.
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*/
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void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
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/**
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* Calculates the minimum and maximum extent of the solid, when under the
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* specified transform, and within the specified limits.
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* @param[in] pAxis The axis along which compute the extent.
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* @param[in] pVoxelLimit The limiting space dictated by voxels.
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* @param[in] pTransform The internal transformation applied to the solid.
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* @param[out] pMin The minimum extent value.
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* @param[out] pMax The maximum extent value.
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* @returns True if the solid is intersected by the extent region.
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*/
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G4bool CalculateExtent(const EAxis pAxis,
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const G4VoxelLimits& pVoxelLimit,
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const G4AffineTransform& pTransform,
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G4double& pMin, G4double& pMax) const override;
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/**
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* Concrete implementations of the expected query interfaces for
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* solids, as defined in the base class G4VSolid.
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*/
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EInside Inside(const G4ThreeVector& p) const override;
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G4ThreeVector SurfaceNormal(const G4ThreeVector& p) const override;
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G4double DistanceToIn(const G4ThreeVector& p,
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const G4ThreeVector& v) const override;
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G4double DistanceToIn(const G4ThreeVector& p) const override;
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G4double DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v,
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const G4bool calcNorm = false,
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G4bool* validNorm = nullptr,
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G4ThreeVector* n = nullptr) const override;
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G4double DistanceToOut(const G4ThreeVector& p) const override;
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/**
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* Returns the type ID, "G4Hype" of the solid.
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*/
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G4GeometryType GetEntityType() const override;
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/**
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* Makes a clone of the object for use in multi-treading.
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* @returns A pointer to the new cloned allocated solid.
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*/
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G4VSolid* Clone() const override;
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/**
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* Streams the object contents to an output stream.
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*/
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std::ostream& StreamInfo(std::ostream& os) const override;
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/**
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* Returning an estimation of the solid volume (capacity) and
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* surface area, in internal units.
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*/
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G4double GetCubicVolume() override;
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G4double GetSurfaceArea() override;
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/**
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* Returns a random point located and uniformly distributed on the
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* surface of the solid.
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*/
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G4ThreeVector GetPointOnSurface() const override;
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/**
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* Methods for creating graphical representations (i.e. for visualisation).
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*/
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void DescribeYourselfTo(G4VGraphicsScene& scene) const override;
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G4VisExtent GetExtent() const override;
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G4Polyhedron* CreatePolyhedron() const override;
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G4Polyhedron* GetPolyhedron() const 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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G4Hype(__void__&);
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/**
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* Copy constructor and assignment operator.
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*/
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G4Hype(const G4Hype& rhs);
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G4Hype& operator=(const G4Hype& rhs);
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private:
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/**
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* Tells whether we have an inner surface or not.
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*/
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inline G4bool InnerSurfaceExists() const;
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/**
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* Returns the approximate isotropic distance to the hyperbolic surface.
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*/
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G4double ApproxDistOutside( G4double pr, G4double pz,
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G4double r0, G4double tanPhi ) const;
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G4double ApproxDistInside( G4double pr, G4double pz,
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G4double r0, G4double tan2Phi ) const;
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/**
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* Returns the values of the hype radii at a given Z.
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*/
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inline G4double HypeInnerRadius2(G4double zVal) const;
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inline G4double HypeOuterRadius2(G4double zVal) const;
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/**
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* Decides if and where a line intersects with a hyperbolic surface
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* (of infinite extent).
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* @returns The number of intersections. If 0, the trajectory misses.
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*/
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G4int IntersectHype( const G4ThreeVector& p, const G4ThreeVector& v,
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G4double r2, G4double tan2Phi, G4double s[2] ) const;
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private:
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G4double innerRadius;
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G4double outerRadius;
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G4double halfLenZ;
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G4double innerStereo;
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G4double outerStereo;
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/** Precalculated parameters, squared quantities. */
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G4double tanInnerStereo; // tan of Inner Stereo angle
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G4double tanOuterStereo; // tan of Outer Stereo angle
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G4double tanInnerStereo2; // squared tan of Inner Stereo angle
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G4double tanOuterStereo2; // squared tan of Outer Stereo angle
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G4double innerRadius2; // squared Inner Radius
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G4double outerRadius2; // squared Outer Radius
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G4double endInnerRadius2; // squared endcap Inner Radius
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G4double endOuterRadius2; // squared endcap Outer Radius
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G4double endInnerRadius; // endcap Inner Radius
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G4double endOuterRadius; // endcap Outer Radius
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/** Used by DistanceToOut(). */
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enum ESide { outerFace, innerFace, leftCap, rightCap };
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G4double fCubicVolume = 0.0;
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G4double fSurfaceArea = 0.0;
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G4double fInnerSurfaceArea = 0.0;
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G4double fOuterSurfaceArea = 0.0;
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G4double fHalfTol;
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mutable G4bool fRebuildPolyhedron = false;
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mutable G4Polyhedron* fpPolyhedron = nullptr;
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};
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#include "G4Hype.icc"
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#endif // defined(G4GEOM_USE_UHYPE) && defined(G4GEOM_USE_SYS_USOLIDS)
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#endif // G4HYPE_HH
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