Gabriele Cosmo
301 lines
11 KiB
C++
301 lines
11 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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// G4Polyhedra
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//
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// Class description:
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//
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// Class implementing a CSG-like type "PGON" Geant 3.21 volume,
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// inherited from class G4VCSGfaceted:
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//
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// G4Polyhedra( const G4String& name,
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// G4double phiStart, - initial phi starting angle
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// G4double phiTotal, - total phi angle
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// G4int numSide, - number sides
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// G4int numZPlanes, - number of z planes
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// const G4double zPlane[], - position of z planes
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// const G4double rInner[], - tangent distance to inner surface
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// const G4double rOuter[] ) - tangent distance to outer surface
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//
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// G4Polyhedra( const G4String& name,
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// G4double phiStart, - initial phi starting angle
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// G4double phiTotal, - total phi angle
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// G4int numSide, - number sides
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// G4int numRZ, - number corners in r,z space
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// const G4double r[], - r coordinates of these corners
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// const G4double z[] ) - z coordinates of these corners
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// Author: David C. Williams (UCSC), 1998 - First implementation
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// --------------------------------------------------------------------
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#ifndef G4POLYHEDRA_HH
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#define G4POLYHEDRA_HH
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#include "G4GeomTypes.hh"
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#if defined(G4GEOM_USE_USOLIDS)
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#define G4GEOM_USE_UPOLYHEDRA 1
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#endif
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#if defined(G4GEOM_USE_UPOLYHEDRA)
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#define G4UPolyhedra G4Polyhedra
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#include "G4UPolyhedra.hh"
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#else
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#include "G4VCSGfaceted.hh"
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#include "G4PolyhedraSide.hh"
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#include "G4PolyhedraHistorical.hh"
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#include "G4Polyhedron.hh"
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class G4EnclosingCylinder;
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class G4ReduciblePolygon;
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/**
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* @brief G4Polyhedra represents a composed closed polyhedra (PGON) made of
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* planar sizes along the Z axis, with or without cut in Phi.
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*/
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class G4Polyhedra : public G4VCSGfaceted
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{
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public:
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/**
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* Constructs a polyhedra, given its parameters.
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* @param[in] name The solid name.
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* @param[in] phiStart Initial Phi starting angle.
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* @param[in] phiTotal Total Phi angle.
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* @param[in] numSide Number of sides.
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* @param[in] numZPlanes Number of Z planes.
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* @param[in] zPlane Position of Z planes.
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* @param[in] rInner Tangent distance to inner surface.
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* @param[in] rOuter Tangent distance to outer surface.
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*/
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G4Polyhedra(const G4String& name,
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G4double phiStart, // initial phi starting angle
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G4double phiTotal, // total phi angle
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G4int numSide, // number sides
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G4int numZPlanes, // number of z planes
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const G4double zPlane[], // position of z planes
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const G4double rInner[], // tangent distance to inner surface
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const G4double rOuter[] ); // tangent distance to outer surface
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/**
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* Alternative constructor of a polyhedra, given corners coordinates.
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* @param[in] name The solid name.
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* @param[in] phiStart Initial Phi starting angle.
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* @param[in] phiTotal Total Phi angle.
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* @param[in] numSide Number of sides.
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* @param[in] numRZ Number of corners in r,Z space.
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* @param[in] r r coordinates of corners.
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* @param[in] z Z coordinates of corners.
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*/
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G4Polyhedra(const G4String& name,
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G4double phiStart, // initial phi starting angle
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G4double phiTotal, // total phi angle
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G4int numSide, // number sides
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G4int numRZ, // number corners in r,z space
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const G4double r[], // r coordinates of these corners
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const G4double z[] ); // z coordinates of these corners
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/**
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* Destructor.
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*/
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~G4Polyhedra() override;
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/**
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* Accessors.
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*/
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inline G4int GetNumSide() const;
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inline G4double GetStartPhi() const;
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inline G4double GetEndPhi() 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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inline G4bool IsOpen() const;
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inline G4bool IsGeneric() const;
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inline G4int GetNumRZCorner() const;
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inline G4PolyhedraSideRZ GetCorner( const G4int index ) const;
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/**
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* Returns internal scaled parameters.
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*/
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inline G4PolyhedraHistorical* GetOriginalParameters() const;
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/**
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* Sets internal parameters. Parameters 'Rmin' and 'Rmax' in input must
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* be scaled first by a factor computed as 'cos(0.5*phiTotal/theNumSide)',
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* if not already scaled.
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*/
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inline void SetOriginalParameters(G4PolyhedraHistorical* pars);
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/**
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* Concrete implementations of the expected query interfaces for
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* solids, as defined in G4VSolid. Remaining functions are concretely
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* defined in the base class G4VCSGfaceted.
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*/
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EInside Inside( 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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/**
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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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* 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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* Returns the type ID, "G4Polyhedra" of the solid.
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*/
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G4GeometryType GetEntityType() const override;
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/**
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* Returns true as the solid has only planar faces.
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*/
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G4bool IsFaceted () 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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* 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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* 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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* Returns a pointer to a generated polyhedron used for visualisation.
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*/
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G4Polyhedron* CreatePolyhedron() const override;
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/**
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* Clears all parameters and rebuild the shape, for use in divisions.
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*/
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G4bool Reset();
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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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G4Polyhedra(__void__&);
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/**
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* Copy constructor and assignment operator.
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*/
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G4Polyhedra( const G4Polyhedra& source );
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G4Polyhedra& operator=( const G4Polyhedra& source );
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private:
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/**
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* Sets internal parameters for the generic constructor.
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*/
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void SetOriginalParameters(G4ReduciblePolygon* rz);
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/**
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* Generates the shape and is called by each constructor,
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* after the conversion of the arguments.
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*/
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void Create( G4double phiStart, // initial phi starting angle
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G4double phiTotal, // total phi angle
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G4int numSide, // number sides
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G4ReduciblePolygon* rz ); // rz coordinates
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/**
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* Copy parameters from other solid or reset them.
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* Used in copy constructor and assignment operator.
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*/
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void CopyStuff( const G4Polyhedra& source );
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void DeleteStuff();
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/**
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* Sets the vector of surface elements. Auxiliary method used for
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* sampling random points on surface.
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*/
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void SetSurfaceElements() const;
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private:
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G4int numSide = 0; // Number of sides
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G4double startPhi; // Starting phi value (0 < phiStart < 2pi)
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G4double endPhi; // end phi value (0 < endPhi-phiStart < 2pi)
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G4bool phiIsOpen = false; // true if there is a phi segment
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G4bool genericPgon = false; // true if created through 2nd generic ctor
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G4int numCorner = 0; // number RZ points
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G4PolyhedraSideRZ* corners = nullptr; // our corners
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G4PolyhedraHistorical* original_parameters = nullptr; // original input pars
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G4EnclosingCylinder* enclosingCylinder = nullptr;
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struct surface_element { G4double area=0.; G4int i0=0, i1=0, i2=0; };
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mutable std::vector<surface_element>* fElements = nullptr;
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};
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#include "G4Polyhedra.icc"
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#endif
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#endif
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