| [831] | 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: G4Para.hh,v 1.18 2006/10/19 15:33:37 gcosmo Exp $
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| [1058] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
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| [831] | 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 | // G4Para
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| 35 | //
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| 36 | // Class description:
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| 37 | //
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| 38 | // A G4Parallepiped, essentially a box with half lengths dx,dy,dz
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| 39 | // `skewed' so that there are angles theta & phi of the polar line
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| 40 | // joining the faces at +-dz in z, and alpha formed by the y axis
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| 41 | // and the plane joinng the centre of the faces G4Parallel to the
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| 42 | // z-x plane at -dy and +dy.
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| 43 | //
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| 44 | // A G4Para is defined by:
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| 45 | // dx,dy,dz - Half-length in x,y,z
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| 46 | // alpha - Angle formed by the y axis and by the plane joining
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| 47 | // the centre of the faces G4Parallel to the z-x plane
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| 48 | // at -dy and +dy
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| 49 | // theta - Polar angle of the line joining the centres of the
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| 50 | // faces at -dz and +dz in z
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| 51 | // phi - Azimuthal angle of the line joining the centres of the
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| 52 | // faces at -dz and +dz in z
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| 53 | // Member data:
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| 54 | //
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| 55 | // Note that the angles parameters are not stored - precomputed trig is
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| 56 | // stored instead.
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| 57 | //
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| 58 | // fDx Half-length in x
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| 59 | // fDy Half-length in y
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| 60 | // fDz Half-length in z
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| 61 | //
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| 62 | // fTalpha Tan of alpha
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| 63 | // fTthetaCphi Tan theta * Cos phi
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| 64 | // fTthetaSphi Tan theta * Sin phi
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| 65 |
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| 66 | // History:
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| 67 | // 21.3.94 P.Kent Old C++ code converted to tolerant geometry
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| 68 | // 31.10.96 V.Grichine Modifications according G4Box/Tubs before to commit
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| 69 | // 18.11.99 V.Grichine , kUndefined was added to ESide
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| 70 | // --------------------------------------------------------------------
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| 71 |
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| 72 | #ifndef G4Para_HH
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| 73 | #define G4Para_HH
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| 74 |
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| 75 | #include "G4CSGSolid.hh"
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| 76 |
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| 77 | class G4Para : 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 | G4Para(const G4String& pName,
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| 82 | G4double pDx, G4double pDy, G4double pDz,
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| 83 | G4double pAlpha, G4double pTheta, G4double pPhi);
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| 84 |
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| 85 | G4Para(const G4String& pName,
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| 86 | const G4ThreeVector pt[8]);
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| 87 |
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| 88 | virtual ~G4Para();
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| 89 |
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| 90 | // Accessors
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| 91 |
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| 92 | inline G4double GetZHalfLength() const;
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| 93 | inline G4ThreeVector GetSymAxis() const;
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| 94 | inline G4double GetYHalfLength() const;
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| 95 | inline G4double GetXHalfLength() const;
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| 96 | inline G4double GetTanAlpha() const;
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| 97 |
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| 98 | // Modifiers
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| 99 |
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| 100 | inline void SetXHalfLength(G4double val);
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| 101 | inline void SetYHalfLength(G4double val);
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| 102 | inline void SetZHalfLength(G4double val);
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| 103 | inline void SetAlpha(G4double alpha);
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| 104 | inline void SetTanAlpha(G4double val);
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| 105 | inline void SetThetaAndPhi(double pTheta, double pPhi);
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| 106 |
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| 107 | void SetAllParameters(G4double pDx, G4double pDy, G4double pDz,
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| 108 | G4double pAlpha, G4double pTheta, G4double pPhi);
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| 109 |
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| 110 | // Other methods of solid
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| 111 |
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| 112 | inline G4double GetCubicVolume();
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| 113 | inline G4double GetSurfaceArea();
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| 114 |
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| 115 | void ComputeDimensions(G4VPVParameterisation* p,
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| 116 | const G4int n,
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| 117 | const G4VPhysicalVolume* pRep);
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| 118 |
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| 119 | G4bool CalculateExtent(const EAxis pAxis,
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| 120 | const G4VoxelLimits& pVoxelLimit,
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| 121 | const G4AffineTransform& pTransform,
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| 122 | G4double& pMin, G4double& pMax) const;
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| 123 |
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| 124 | EInside Inside(const G4ThreeVector& p) const;
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| 125 |
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| 126 | G4ThreeVector SurfaceNormal( const G4ThreeVector& p) const;
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| 127 |
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| 128 | G4double DistanceToIn(const G4ThreeVector& p,
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| 129 | const G4ThreeVector& v) const;
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| 130 | G4double DistanceToIn(const G4ThreeVector& p) const;
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| 131 |
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| 132 | G4double DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v,
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| 133 | const G4bool calcNorm=G4bool(false),
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| 134 | G4bool *validNorm=0, G4ThreeVector *n=0) const;
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| 135 | G4double DistanceToOut(const G4ThreeVector& p) const;
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| 136 |
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| 137 | G4GeometryType GetEntityType() const;
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| 138 |
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| 139 | G4ThreeVector GetPointOnSurface() const;
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| 140 |
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| 141 | std::ostream& StreamInfo(std::ostream& os) const;
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| 142 |
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| 143 | // Visualisation functions
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| 144 |
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| 145 | void DescribeYourselfTo (G4VGraphicsScene& scene) const;
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| 146 | G4Polyhedron* CreatePolyhedron () const;
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| 147 | G4NURBS* CreateNURBS () const;
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| 148 |
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| 149 | public: // without description
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| 150 |
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| 151 | G4Para(__void__&);
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| 152 | // Fake default constructor for usage restricted to direct object
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| 153 | // persistency for clients requiring preallocation of memory for
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| 154 | // persistifiable objects.
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| 155 |
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| 156 | protected: // without description
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| 157 |
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| 158 | G4ThreeVectorList*
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| 159 | CreateRotatedVertices(const G4AffineTransform& pTransform) const;
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| 160 |
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| 161 | private:
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| 162 |
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| 163 | G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p) const;
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| 164 | // Algorithm for SurfaceNormal() following the original
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| 165 | // specification for points not on the surface
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| 166 |
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| 167 | G4ThreeVector GetPointOnPlane(G4ThreeVector p0, G4ThreeVector p1,
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| 168 | G4ThreeVector p2, G4ThreeVector p3,
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| 169 | G4double& area) const;
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| 170 | // Returns a random point on the surface of one of the faces.
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| 171 |
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| 172 | private:
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| 173 |
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| 174 | G4double fDx,fDy,fDz;
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| 175 | G4double fTalpha,fTthetaCphi,fTthetaSphi;
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| 176 | };
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| 177 |
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| 178 | #include "G4Para.icc"
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| 179 |
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| 180 | #endif
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