| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4Sphere.hh,v 1.24 2009/03/31 07:51:49 gcosmo Exp $
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| 28 | // GEANT4 tag $Name: geant4-09-03 $
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| 29 | //
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| 30 | //
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| 31 | // --------------------------------------------------------------------
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| 32 | // GEANT 4 class header file
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| 33 | //
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| 34 | // G4Sphere
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| 35 | //
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| 36 | // Class description:
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| 37 | //
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| 38 | // A G4Sphere is, in the general case, a section of a spherical shell,
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| 39 | // between specified phi and theta angles
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| 40 | //
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| 41 | // The phi and theta segments are described by a starting angle,
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| 42 | // and the +ve delta angle for the shape.
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| 43 | // If the delta angle is >=2*pi, or >=pi the shape is treated as
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| 44 | // continuous in phi or theta respectively.
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| 45 | //
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| 46 | // Theta must lie between 0-pi (incl).
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| 47 | //
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| 48 | // Member Data:
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| 49 | //
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| 50 | // fRmin inner radius
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| 51 | // fRmax outer radius
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| 52 | //
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| 53 | // fSPhi starting angle of the segment in radians
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| 54 | // fDPhi delta angle of the segment in radians
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| 55 | //
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| 56 | // fSTheta starting angle of the segment in radians
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| 57 | // fDTheta delta angle of the segment in radians
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| 58 | //
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| 59 | //
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| 60 | // Note:
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| 61 | // Internally fSPhi & fDPhi are adjusted so that fDPhi<=2PI,
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| 62 | // and fDPhi+fSPhi<=2PI. This enables simpler comparisons to be
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| 63 | // made with (say) Phi of a point.
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| 64 |
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| 65 | // History:
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| 66 | // 28.3.94 P.Kent: old C++ code converted to tolerant geometry
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| 67 | // 17.9.96 V.Grichine: final modifications to commit
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| 68 | // --------------------------------------------------------------------
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| 69 |
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| 70 | #ifndef G4Sphere_HH
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| 71 | #define G4Sphere_HH
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| 72 |
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| 73 | #include "G4CSGSolid.hh"
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| 74 |
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| 75 | class G4VisExtent;
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| 76 |
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| 77 | class G4Sphere : public G4CSGSolid
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| 78 | {
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| 79 | public: // with description
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| 80 |
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| 81 | G4Sphere(const G4String& pName,
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| 82 | G4double pRmin, G4double pRmax,
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| 83 | G4double pSPhi, G4double pDPhi,
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| 84 | G4double pSTheta, G4double pDTheta);
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| 85 | //
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| 86 | // Constructs a sphere or sphere shell section
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| 87 | // with the given name and dimensions
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| 88 |
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| 89 | ~G4Sphere();
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| 90 | //
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| 91 | // Destructor
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| 92 |
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| 93 | // Accessors
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| 94 |
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| 95 | inline G4double GetInnerRadius () const;
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| 96 | inline G4double GetOuterRadius () const;
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| 97 | inline G4double GetStartPhiAngle () const;
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| 98 | inline G4double GetDeltaPhiAngle () const;
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| 99 | inline G4double GetStartThetaAngle() const;
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| 100 | inline G4double GetDeltaThetaAngle() const;
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| 101 |
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| 102 | // Modifiers
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| 103 |
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| 104 | inline void SetInnerRadius (G4double newRMin);
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| 105 | inline void SetOuterRadius (G4double newRmax);
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| 106 | inline void SetStartPhiAngle (G4double newSphi, G4bool trig=true);
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| 107 | inline void SetDeltaPhiAngle (G4double newDphi);
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| 108 | inline void SetStartThetaAngle(G4double newSTheta);
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| 109 | inline void SetDeltaThetaAngle(G4double newDTheta);
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| 110 |
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| 111 | // Methods for solid
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| 112 |
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| 113 | inline G4double GetCubicVolume();
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| 114 | G4double GetSurfaceArea();
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| 115 |
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| 116 | void ComputeDimensions( G4VPVParameterisation* p,
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| 117 | const G4int n,
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| 118 | const G4VPhysicalVolume* pRep);
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| 119 |
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| 120 | G4bool CalculateExtent(const EAxis pAxis,
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| 121 | const G4VoxelLimits& pVoxelLimit,
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| 122 | const G4AffineTransform& pTransform,
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| 123 | G4double& pmin, G4double& pmax) const;
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| 124 |
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| 125 | EInside Inside(const G4ThreeVector& p) const;
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| 126 |
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| 127 | G4ThreeVector SurfaceNormal( const G4ThreeVector& p) const;
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| 128 |
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| 129 | G4double DistanceToIn(const G4ThreeVector& p,
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| 130 | const G4ThreeVector& v) const;
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| 131 |
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| 132 | G4double DistanceToIn(const G4ThreeVector& p) const;
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| 133 |
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| 134 | G4double DistanceToOut(const G4ThreeVector& p,
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| 135 | const G4ThreeVector& v,
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| 136 | const G4bool calcNorm=G4bool(false),
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| 137 | G4bool *validNorm=0,
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| 138 | G4ThreeVector *n=0) const;
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| 139 |
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| 140 | G4double DistanceToOut(const G4ThreeVector& p) const;
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| 141 |
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| 142 | G4GeometryType GetEntityType() const;
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| 143 |
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| 144 | G4ThreeVector GetPointOnSurface() const;
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| 145 |
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| 146 | std::ostream& StreamInfo(std::ostream& os) const;
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| 147 |
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| 148 | // Visualisation functions
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| 149 |
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| 150 | G4VisExtent GetExtent () const;
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| 151 | void DescribeYourselfTo(G4VGraphicsScene& scene) const;
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| 152 | G4Polyhedron* CreatePolyhedron() const;
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| 153 | G4NURBS* CreateNURBS() const;
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| 154 |
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| 155 | public: // without description
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| 156 |
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| 157 | G4Sphere(__void__&);
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| 158 | //
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| 159 | // Fake default constructor for usage restricted to direct object
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| 160 | // persistency for clients requiring preallocation of memory for
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| 161 | // persistifiable objects.
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| 162 |
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| 163 | // Old access functions
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| 164 |
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| 165 | inline G4double GetRmin() const;
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| 166 | inline G4double GetRmax() const;
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| 167 | inline G4double GetSPhi() const;
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| 168 | inline G4double GetDPhi() const;
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| 169 | inline G4double GetSTheta() const;
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| 170 | inline G4double GetDTheta() const;
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| 171 | inline G4double GetInsideRadius() const;
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| 172 | inline void SetInsideRadius(G4double newRmin);
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| 173 |
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| 174 | private:
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| 175 |
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| 176 | G4ThreeVectorList*
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| 177 | CreateRotatedVertices(const G4AffineTransform& pTransform,
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| 178 | G4int& noPolygonVertices) const;
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| 179 | //
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| 180 | // Creates the List of transformed vertices in the format required
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| 181 | // for G4VSolid:: ClipCrossSection and ClipBetweenSections
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| 182 |
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| 183 | inline void Initialize();
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| 184 | //
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| 185 | // Reset relevant values to zero
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| 186 |
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| 187 | inline void CheckThetaAngles(G4double sTheta, G4double dTheta);
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| 188 | inline void CheckSPhiAngle(G4double sPhi);
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| 189 | inline void CheckDPhiAngle(G4double dPhi);
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| 190 | inline void CheckPhiAngles(G4double sPhi, G4double dPhi);
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| 191 | //
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| 192 | // Reset relevant flags and angle values
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| 193 |
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| 194 | inline void InitializePhiTrigonometry();
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| 195 | inline void InitializeThetaTrigonometry();
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| 196 | //
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| 197 | // Recompute relevant trigonometric values and cache them
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| 198 |
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| 199 | G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p) const;
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| 200 | //
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| 201 | // Algorithm for SurfaceNormal() following the original
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| 202 | // specification for points not on the surface
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| 203 |
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| 204 | private:
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| 205 |
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| 206 | // Used by distanceToOut
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| 207 | //
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| 208 | enum ESide {kNull,kRMin,kRMax,kSPhi,kEPhi,kSTheta,kETheta};
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| 209 |
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| 210 | // used by normal
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| 211 | //
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| 212 | enum ENorm {kNRMin,kNRMax,kNSPhi,kNEPhi,kNSTheta,kNETheta};
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| 213 |
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| 214 | G4double fEpsilon, fRminTolerance, fRmaxTolerance, kAngTolerance;
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| 215 | //
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| 216 | // Radial and angular tolerances
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| 217 |
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| 218 | G4double fRmin, fRmax, fSPhi, fDPhi, fSTheta, fDTheta;
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| 219 | //
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| 220 | // Radial and angular dimensions
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| 221 |
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| 222 | G4double sinCPhi, cosCPhi, cosHDPhiOT, cosHDPhiIT,
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| 223 | sinSPhi, cosSPhi, sinEPhi, cosEPhi, hDPhi, cPhi, ePhi;
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| 224 | //
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| 225 | // Cached trigonometric values for Phi angle
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| 226 |
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| 227 | G4double sinSTheta, cosSTheta, sinETheta, cosETheta,
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| 228 | tanSTheta, tanSTheta2, tanETheta, tanETheta2, eTheta;
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| 229 | //
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| 230 | // Cached trigonometric values for Theta angle
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| 231 |
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| 232 | G4bool fFullPhiSphere, fFullThetaSphere, fFullSphere;
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| 233 | //
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| 234 | // Flags for identification of section, shell or full sphere
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| 235 | };
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| 236 |
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| 237 | #include "G4Sphere.icc"
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| 238 |
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| 239 | #endif
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