Gabriele Cosmo
279 lines
9.8 KiB
C++
279 lines
9.8 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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// G4Cons
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//
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// Class description:
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//
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// A G4Cons is, in the general case, a Phi segment of a cone, with
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// half-length fDz, inner and outer radii specified at -fDz and +fDz.
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// The Phi segment is described by a starting fSPhi angle, and the
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// +fDPhi delta angle for the shape.
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// If the delta angle is >=2*pi, the shape is treated as continuous
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// in Phi.
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//
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// Member Data:
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//
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// fRmin1 inside radius at -fDz
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// fRmin2 inside radius at +fDz
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// fRmax1 outside radius at -fDz
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// fRmax2 outside radius at +fDz
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// fDz half length in z
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//
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// fSPhi starting angle of the segment in radians
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// fDPhi delta angle of the segment in radians
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//
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// fPhiFullCone Boolean variable used for indicate the Phi Section
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//
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// Note:
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// Internally fSPhi & fDPhi are adjusted so that fDPhi<=2PI,
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// and fDPhi+fSPhi<=2PI. This enables simpler comparisons to be
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// made with (say) Phi of a point.
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// Author: Paul Kent (CERN), 19.3.1994 - Code converted to tolerant geometry
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// --------------------------------------------------------------------
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#ifndef G4CONS_HH
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#define G4CONS_HH
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#include "G4GeomTypes.hh"
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#if defined(G4GEOM_USE_USOLIDS)
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#define G4GEOM_USE_UCONS 1
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#endif
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#if defined(G4GEOM_USE_UCONS)
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#define G4UCons G4Cons
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#include "G4UCons.hh"
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#else
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#include <CLHEP/Units/PhysicalConstants.h>
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#include "G4CSGSolid.hh"
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#include "G4Polyhedron.hh"
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/**
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* @brief G4Cons is, in the general case, a Phi segment of a cone, with
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* half-length fDz, inner and outer radii specified at -fDz and +fDz.
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* The Phi segment is described by a starting fSPhi angle, and the
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* +fDPhi delta angle for the shape.
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* If the delta angle is >=2*pi, the shape is treated as continuous in Phi.
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*/
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class G4Cons : public G4CSGSolid
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{
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public:
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/**
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* Constructs a cone with the given name and dimensions.
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* @param[in] pName The name of the solid.
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* @param[in] pRmin1 Inside radius at -fDz.
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* @param[in] pRmax1 Outside radius at -fDz
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* @param[in] pRmin2 Inside radius at +fDz.
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* @param[in] pRmax2 Outside radius at +fDz
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* @param[in] pDZ Half length in Z.
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* @param[in] pSPhi Starting angle of the segment in radians.
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* @param[in] pDPhi Delta angle of the segment in radians.
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*/
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G4Cons(const G4String& pName,
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G4double pRmin1, G4double pRmax1,
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G4double pRmin2, G4double pRmax2,
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G4double pDz,
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G4double pSPhi, G4double pDPhi);
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/**
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* Default destructor.
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*/
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~G4Cons() override = default;
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/**
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* Accessors.
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*/
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inline G4double GetInnerRadiusMinusZ() const;
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inline G4double GetOuterRadiusMinusZ() const;
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inline G4double GetInnerRadiusPlusZ() const;
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inline G4double GetOuterRadiusPlusZ() const;
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inline G4double GetZHalfLength() const;
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inline G4double GetStartPhiAngle() const;
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inline G4double GetDeltaPhiAngle() const;
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inline G4double GetSinStartPhi() const;
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inline G4double GetCosStartPhi() const;
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inline G4double GetSinEndPhi() const;
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inline G4double GetCosEndPhi() const;
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/**
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* Modifiers.
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*/
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inline void SetInnerRadiusMinusZ (G4double Rmin1 );
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inline void SetOuterRadiusMinusZ (G4double Rmax1 );
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inline void SetInnerRadiusPlusZ (G4double Rmin2 );
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inline void SetOuterRadiusPlusZ (G4double Rmax2 );
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inline void SetZHalfLength (G4double newDz );
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inline void SetStartPhiAngle (G4double newSPhi, G4bool trig=true);
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inline void SetDeltaPhiAngle (G4double newDPhi);
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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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* 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,
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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, "G4Cons" of the solid.
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*/
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G4GeometryType GetEntityType() const 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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* 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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* 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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G4Polyhedron* CreatePolyhedron() 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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G4Cons(__void__&);
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/**
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* Copy constructor and assignment operator.
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*/
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G4Cons(const G4Cons& rhs) = default;
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G4Cons& operator=(const G4Cons& rhs);
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private:
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/**
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* Resets relevant values to zero.
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*/
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inline void Initialize();
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/**
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* Reset relevant flags and angle values.
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*/
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inline void CheckSPhiAngle(G4double sPhi);
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inline void CheckDPhiAngle(G4double dPhi);
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inline void CheckPhiAngles(G4double sPhi, G4double dPhi);
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/**
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* Recomputes relevant trigonometric values and cache them.
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*/
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inline void InitializeTrigonometry();
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/**
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* Algorithm for SurfaceNormal() following the original specification
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* for points not on the surface.
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*/
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G4ThreeVector ApproxSurfaceNormal(const G4ThreeVector& p) const;
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private:
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/** Radial and angular tolerances. */
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G4double kRadTolerance, kAngTolerance;
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/** Radial and angular dimensions. */
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G4double fRmin1, fRmin2, fRmax1, fRmax2, fDz, fSPhi, fDPhi;
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/** Cached trigonometric values. */
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G4double sinCPhi, cosCPhi, cosHDPhi, cosHDPhiOT, cosHDPhiIT,
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sinSPhi, cosSPhi, sinEPhi, cosEPhi;
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/** Flag for identification of section or full cone. */
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G4bool fPhiFullCone = false;
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/** Cached half tolerance values. */
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G4double halfCarTolerance, halfRadTolerance, halfAngTolerance;
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};
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#include "G4Cons.icc"
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#endif
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#endif
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