Gabriele Cosmo
248 lines
9.1 KiB
C++
248 lines
9.1 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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// G4EllipticalCone
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//
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// Class description:
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//
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// G4EllipticalCone is a full cone with elliptical base which can be cut in Z.
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//
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// Member Data:
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//
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// xSemiAxis semi-axis, x, without dimentions
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// ySemiAxis semi-axis, y, without dimentions
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// zheight height, z
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// zTopCut upper cut plane level, z
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//
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// The height in Z corresponds to where the elliptical cone hits the
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// Z-axis if it had no Z cut. Also the cone is centered at zero having a
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// base at zTopCut and another at -zTopCut. The semi-major axes at the Z=0
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// plane are given by xSemiAxis*zheight and ySemiAxis*zheight so that the
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// curved surface of our cone satisfies the equation:
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//
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// ***************************************************************************
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// * *
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// * (x/xSemiAxis)^2 + (y/ySemiAxis)^2 = (zheight - z)^2 *
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// * *
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// ***************************************************************************
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//
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// In case you want to construct G4EllipticalCone from:
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// 1. halflength in Z = zTopCut
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// 2. Dx and Dy = halflength of ellipse axis at z = -zTopCut
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// 3. dx and dy = halflength of ellipse axis at z = zTopCut
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// ! Attention : dx/dy=Dx/Dy
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//
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// You need to find xSemiAxis,ySemiAxis and zheight:
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//
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// xSemiAxis = (Dx-dx)/(2*zTopCut)
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// ySemiAxis = (Dy-dy)/(2*zTopCut)
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// zheight = (Dx+dx)/(2*xSemiAxis)
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// Author: Dionysios Anninos (CERN), 08.09.2005 - Created
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// Lukas Lindroos, Tatiana Nikitina (CERN), 20.08.2007 - Revised
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// Evgueni Tcherniaev (CERN), 20.07.2017 - New revision
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// --------------------------------------------------------------------
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#ifndef G4ELLIPTICALCONE_HH
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#define G4ELLIPTICALCONE_HH
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#include "G4GeomTypes.hh"
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#if defined(G4GEOM_USE_USOLIDS)
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#define G4GEOM_USE_UELLIPTICALCONE 1
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#endif
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#if (defined(G4GEOM_USE_UELLIPTICALCONE) && defined(G4GEOM_USE_SYS_USOLIDS))
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#define G4UEllipticalCone G4EllipticalCone
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#include "G4UEllipticalCone.hh"
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#else
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#include <CLHEP/Units/PhysicalConstants.h>
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#include "G4VSolid.hh"
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#include "G4Polyhedron.hh"
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/**
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* @brief G4EllipticalCone is a full cone with elliptical base which
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* can be cut in Z. The height in Z corresponds to where the elliptical
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* cone hits the Z-axis if it had no Z cut.
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*/
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class G4EllipticalCone : public G4VSolid
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{
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public:
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/**
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* Constructs an elliptical cone, with cut in Z.
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* @param[in] name The solid name.
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* @param[in] pxSemiAxis Scalar value, defining the scaling along X-axis.
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* @param[in] pySemiAxis Scalar value, defining the scaling along Y-axis.
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* @param[in] zMax The Z-coordinate at the apex.
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* @param[in] pzTopCut Upper cut plane level.
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*/
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G4EllipticalCone(const G4String& pName,
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G4double pxSemiAxis,
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G4double pySemiAxis,
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G4double zMax,
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G4double pzTopCut);
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/**
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* Destructor.
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*/
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~G4EllipticalCone() override;
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/**
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* Accessors.
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*/
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inline G4double GetSemiAxisMin () const;
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inline G4double GetSemiAxisMax () const;
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inline G4double GetSemiAxisX () const;
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inline G4double GetSemiAxisY () const;
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inline G4double GetZMax() const;
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inline G4double GetZTopCut() const;
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/**
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* Modifiers.
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*/
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void SetSemiAxis (G4double x, G4double y, G4double z);
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void SetZCut (G4double newzTopCut);
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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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* 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, "G4EllipticalCone" 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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* 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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* Methods for creating graphical representations (i.e. for visualisation).
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*/
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G4Polyhedron* GetPolyhedron() const override;
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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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/**
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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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G4EllipticalCone(__void__&);
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/**
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* Copy constructor and assignment operator.
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*/
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G4EllipticalCone(const G4EllipticalCone& rhs);
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G4EllipticalCone& operator=(const G4EllipticalCone& rhs);
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protected:
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mutable G4bool fRebuildPolyhedron = false;
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mutable G4Polyhedron* fpPolyhedron = nullptr;
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private:
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/**
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* Algorithm for SurfaceNormal() following the original
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* specification 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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G4double halfCarTol;
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G4double fCubicVolume = 0.0;
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G4double fSurfaceArea = 0.0;
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G4double fMinZBaseArea = 0.0;
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G4double fMaxZBaseArea = 0.0;
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G4double xSemiAxis, ySemiAxis, zheight, zTopCut;
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G4double cosAxisMin, invXX, invYY;
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};
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#include "G4EllipticalCone.icc"
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#endif // defined(G4GEOM_USE_UELLIPTICALCONE) && defined(G4GEOM_USE_SYS_USOLIDS)
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#endif // G4ELLIPTICALCONE_HH
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