include/Geant4/G4Box.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
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0010 // *                                                                  *
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0015 // * use.  Please see the license in the file  LICENSE  and URL above *
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0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
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0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 // G4Box
0027 //
0028 // Class description:
0029 //
0030 //   A Box is a cuboid of given half lengths dx,dy,dz. The Box is
0031 //   centred on the origin with sides parallel to the x/y/z axes.
0032
0033 // 30.06.95 P.Kent: Converted from source code developed end 94
0034 // 27.03.96 J.Allison: Added virtual functions DescribeYourselfTo() and
0035 //                     SendWireframeTo(G4VGraphicsModel&)
0036 // 27.03.98 J.Apostolakis: Inherit from G4CSGSolid (not G4VSolid)
0037 // --------------------------------------------------------------------
0038 #ifndef G4BOX_HH
0039 #define G4BOX_HH
0040
0041 #include "G4GeomTypes.hh"
0042
0043 #if defined(G4GEOM_USE_USOLIDS)
0044 #define G4GEOM_USE_UBOX 1
0045 #endif
0046
0047 #if defined(G4GEOM_USE_UBOX)
0048   #define G4UBox G4Box
0049   #include "G4UBox.hh"
0050 #else
0051
0052 #include "G4CSGSolid.hh"
0053 #include "G4Polyhedron.hh"
0054
0055 class G4Box : public G4CSGSolid
0056 {
0057   public:
0058
0059     G4Box(const G4String& pName, G4double pX, G4double pY, G4double pZ);
0060       // Construct a box with name, and half lengths pX,pY,pZ
0061
0062     ~G4Box() override;
0063
0064     void ComputeDimensions(G4VPVParameterisation* p,
0065                            const G4int n,
0066                            const G4VPhysicalVolume* pRep) override;
0067
0068     void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
0069
0070     G4bool CalculateExtent(const EAxis pAxis,
0071                            const G4VoxelLimits& pVoxelLimit,
0072                            const G4AffineTransform& pTransform,
0073                                  G4double& pMin, G4double& pMax) const override;
0074
0075   // Accessors and modifiers
0076
0077     inline G4double GetXHalfLength() const;
0078     inline G4double GetYHalfLength() const;
0079     inline G4double GetZHalfLength() const;
0080
0081     void SetXHalfLength(G4double dx) ;
0082     void SetYHalfLength(G4double dy) ;
0083     void SetZHalfLength(G4double dz) ;
0084
0085   // Methods for solid
0086
0087     inline G4double GetCubicVolume() override;
0088     inline G4double GetSurfaceArea() override;
0089
0090     EInside Inside(const G4ThreeVector& p) const override;
0091     G4ThreeVector SurfaceNormal( const G4ThreeVector& p) const override;
0092     G4double DistanceToIn(const G4ThreeVector& p,
0093                           const G4ThreeVector& v) const override;
0094     G4double DistanceToIn(const G4ThreeVector& p) const override;
0095     G4double DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v,
0096                            const G4bool calcNorm = false,
0097                                  G4bool* validNorm = nullptr,
0098                                  G4ThreeVector* n = nullptr) const override;
0099     G4double DistanceToOut(const G4ThreeVector& p) const override;
0100
0101     G4GeometryType GetEntityType() const override;
0102     G4ThreeVector GetPointOnSurface() const override;
0103
0104     G4bool IsFaceted() const override;
0105
0106     G4VSolid* Clone() const override;
0107
0108     std::ostream& StreamInfo(std::ostream& os) const override;
0109
0110   // Utilities for visualization
0111
0112     void          DescribeYourselfTo (G4VGraphicsScene& scene) const override;
0113     G4VisExtent   GetExtent          () const override;
0114     G4Polyhedron* CreatePolyhedron   () const override;
0115
0116     G4Box(__void__&);
0117       // Fake default constructor for usage restricted to direct object
0118       // persistency for clients requiring preallocation of memory for
0119       // persistifiable objects.
0120
0121     G4Box(const G4Box& rhs);
0122     G4Box& operator=(const G4Box& rhs);
0123       // Copy constructor and assignment operator.
0124
0125   private:
0126
0127     G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p) const;
0128       // Algorithm for SurfaceNormal() following the original
0129       // specification for points not on the surface
0130
0131   private:
0132
0133     G4double fDx = 0.0, fDy = 0.0, fDz = 0.0;
0134     G4double delta;  // Cached half Cartesian tolerance
0135 };
0136
0137 #include "G4Box.icc"
0138
0139 #endif
0140
0141 #endif