Gabriele Cosmo
289 lines
11 KiB
C++
289 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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// G4VTwistedFaceted
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//
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// Class description:
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//
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// G4VTwistedFaceted is a base class for twisted boxoids:
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// G4TwistedTrd, G4TwistedTrap and G4TwistedBox
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// Author: Oliver Link (CERN), 27.10.2004 - Created
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// --------------------------------------------------------------------
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#ifndef G4VTWISTEDFACETED_HH
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#define G4VTWISTEDFACETED_HH 1
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#include "G4VSolid.hh"
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#include "G4TwoVector.hh"
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#include "G4TwistTrapAlphaSide.hh"
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#include "G4TwistTrapParallelSide.hh"
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#include "G4TwistBoxSide.hh"
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#include "G4TwistTrapFlatSide.hh"
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class G4SolidExtentList;
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class G4ClippablePolygon;
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/**
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* @brief G4VTwistedFaceted is a base class for twisted boxoids:
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* G4TwistedTrd, G4TwistedTrap and G4TwistedBox.
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*/
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class G4VTwistedFaceted: public G4VSolid
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{
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public:
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/**
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* Constructs a faceted solid, given its parameters.
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* @param[in] pName The solid name.
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* @param[in] pPhiTwist Twist angle.
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* @param[in] pDz Half-length along Z axis.
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* @param[in] pTheta Polar angle of the line joining the centres of the
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* faces at -/+pDz.
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* @param[in] pPhi Azimuthal angle of the line joining the centres of the
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* faces at -/+pDz.
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* @param[in] pDy1 Half Y length at -pDz.
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* @param[in] pDx1 Half X length at -pDz, y=-pDy1.
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* @param[in] pDx2 Half X length at -pDz, y=+pDy1.
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* @param[in] pDy2 Half Y length at +pDz.
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* @param[in] pDx3 Half X length at +pDz, y=-pDy2.
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* @param[in] pDx4 Half X length at +pDz, y=+pDy2.
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* @param[in] pAlph Angle with respect to the Y axis from centre of side.
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*/
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G4VTwistedFaceted(const G4String& pname, // Name of instance
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G4double PhiTwist, // twist angle
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G4double pDz, // half z lenght
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G4double pTheta, // direction between end planes
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G4double pPhi, // defined by polar & azim. angles
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G4double pDy1, // half y length at -pDz
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G4double pDx1, // half x length at -pDz,-pDy
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G4double pDx2, // half x length at -pDz,+pDy
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G4double pDy2, // half y length at +pDz
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G4double pDx3, // half x length at +pDz,-pDy
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G4double pDx4, // half x length at +pDz,+pDy
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G4double pAlph ); // tilt angle at +pDz
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/**
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* Destructor.
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*/
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~G4VTwistedFaceted() 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*,
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const G4int,
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const G4VPhysicalVolume* ) 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,
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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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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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EInside Inside (const G4ThreeVector& p) const override;
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G4ThreeVector SurfaceNormal(const G4ThreeVector& p) 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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* 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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* 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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G4Polyhedron* GetPolyhedron () const override;
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G4VisExtent GetExtent () 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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* Accessors.
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*/
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inline G4double GetTwistAngle() const { return fPhiTwist; }
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inline G4double GetDx1 () const { return fDx1 ; }
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inline G4double GetDx2 () const { return fDx2 ; }
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inline G4double GetDx3 () const { return fDx3 ; }
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inline G4double GetDx4 () const { return fDx4 ; }
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inline G4double GetDy1 () const { return fDy1 ; }
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inline G4double GetDy2 () const { return fDy2 ; }
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inline G4double GetDz () const { return fDz ; }
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inline G4double GetPhi () const { return fPhi ; }
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inline G4double GetTheta () const { return fTheta ; }
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inline G4double GetAlpha () const { return fAlph ; }
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inline G4double Xcoef(G4double u, G4double phi, G4double ftg) const;
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inline G4double GetValueA(G4double phi) const;
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inline G4double GetValueB(G4double phi) const;
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inline G4double GetValueD(G4double phi) const;
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/**
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* Returns the type ID, "G4VTwistedFaceted" of the solid.
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*/
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G4GeometryType GetEntityType() 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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G4VTwistedFaceted(__void__&);
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/**
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* Copy constructor and assignment operator.
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*/
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G4VTwistedFaceted(const G4VTwistedFaceted& rhs);
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G4VTwistedFaceted& operator=(const G4VTwistedFaceted& rhs);
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protected:
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mutable G4bool fRebuildPolyhedron = false;
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mutable G4Polyhedron* fpPolyhedron = nullptr; // polyhedron for vis
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G4double fCubicVolume = 0.0; // volume of the solid
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G4double fSurfaceArea = 0.0; // area of the solid
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private:
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/**
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* Utility used for computing the surface area.
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*/
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G4double GetLateralFaceArea(const G4TwoVector& p1,
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const G4TwoVector& p2,
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const G4TwoVector& p3,
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const G4TwoVector& p4) const;
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/**
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* Utility used in constructor for creating the surfaces.
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*/
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void CreateSurfaces();
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private:
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G4double fTheta;
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G4double fPhi ;
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G4double fDy1;
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G4double fDx1;
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G4double fDx2;
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G4double fDy2;
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G4double fDx3;
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G4double fDx4;
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G4double fDz; // Half-length along the z axis
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G4double fDx ; // maximum side in x
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G4double fDy ; // maximum side in y
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G4double fAlph ;
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G4double fTAlph ; // std::tan(fAlph)
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G4double fdeltaX ;
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G4double fdeltaY ;
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G4double fPhiTwist; // twist angle ( dphi in surface equation)
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G4VTwistSurface* fLowerEndcap ; // surface of -ve z
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G4VTwistSurface* fUpperEndcap ; // surface of +ve z
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G4VTwistSurface* fSide0 ; // Twisted Side at phi = 0 deg
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G4VTwistSurface* fSide90 ; // Twisted Side at phi = 90 deg
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G4VTwistSurface* fSide180 ; // Twisted Side at phi = 180 deg
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G4VTwistSurface* fSide270 ; // Twisted Side at phi = 270 deg
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};
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//=====================================================================
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inline
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G4double G4VTwistedFaceted::GetValueA(G4double phi) const
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{
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return ( fDx4 + fDx2 + ( fDx4 - fDx2 ) * ( 2 * phi ) / fPhiTwist ) ;
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}
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inline
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G4double G4VTwistedFaceted::GetValueD(G4double phi) const
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{
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return ( fDx3 + fDx1 + ( fDx3 - fDx1 ) * ( 2 * phi ) / fPhiTwist ) ;
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}
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inline
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G4double G4VTwistedFaceted::GetValueB(G4double phi) const
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{
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return ( fDy2 + fDy1 + ( fDy2 - fDy1 ) * ( 2 * phi ) / fPhiTwist ) ;
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}
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inline
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G4double G4VTwistedFaceted::Xcoef(G4double u, G4double phi, G4double ftg) const
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{
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return GetValueA(phi)/2. + (GetValueD(phi)-GetValueA(phi))/4.
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- u*( ( GetValueD(phi)-GetValueA(phi) ) / ( 2 * GetValueB(phi) ) - ftg );
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}
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#endif
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