| Geant4 Cross Reference |
1 //
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25 //
26 // G4Trd
27 //
28 // Class description:
29 //
30 // A G4Trd is a trapezoid with the x and y dimensions varying along z
31 // functions:
32 //
33 // Member Data:
34 //
35 // fDx1 Half-length along x at the surface positioned at -dz
36 // fDx2 Half-length along x at the surface positioned at +dz
37 // fDy1 Half-length along y at the surface positioned at -dz
38 // fDy2 Half-length along y at the surface positioned at +dz
39 // fDz Half-length along z axis
40
41 // 12.01.95 P.Kent: Old prototype code converted to thick geometry
42 // 21.04.97 J.Apostolakis: Added Set Methods
43 // 19.11.99 V.Grichine: kUndefined was added to Eside enum
44 // --------------------------------------------------------------------
45 #ifndef G4TRD_HH
46 #define G4TRD_HH
47
48 #include "G4GeomTypes.hh"
49
50 #if defined(G4GEOM_USE_USOLIDS)
51 #define G4GEOM_USE_UTRD 1
52 #endif
53
54 #if defined(G4GEOM_USE_UTRD)
55 #define G4UTrd G4Trd
56 #include "G4UTrd.hh"
57 #else
58
59 #include "G4CSGSolid.hh"
60 #include "G4Polyhedron.hh"
61
62 class G4Trd : public G4CSGSolid
63 {
64 public:
65
66 G4Trd( const G4String& pName,
67 G4double pdx1, G4double pdx2,
68 G4double pdy1, G4double pdy2,
69 G4double pdz );
70 //
71 // Constructs a trapezoid with name, and half lengths
72
73 ~G4Trd() override;
74 //
75 // Destructor
76
77 // Accessors
78
79 inline G4double GetXHalfLength1() const;
80 inline G4double GetXHalfLength2() const;
81 inline G4double GetYHalfLength1() const;
82 inline G4double GetYHalfLength2() const;
83 inline G4double GetZHalfLength() const;
84
85 // Modifiers
86
87 inline void SetXHalfLength1(G4double val);
88 inline void SetXHalfLength2(G4double val);
89 inline void SetYHalfLength1(G4double val);
90 inline void SetYHalfLength2(G4double val);
91 inline void SetZHalfLength(G4double val);
92
93 void SetAllParameters ( G4double pdx1, G4double pdx2,
94 G4double pdy1, G4double pdy2,
95 G4double pdz );
96
97 // Methods of solid
98
99 G4double GetCubicVolume() override;
100 G4double GetSurfaceArea() override;
101
102 void ComputeDimensions( G4VPVParameterisation* p,
103 const G4int n,
104 const G4VPhysicalVolume* pRep ) override;
105
106 void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
107
108 G4bool CalculateExtent(const EAxis pAxis,
109 const G4VoxelLimits& pVoxelLimit,
110 const G4AffineTransform& pTransform,
111 G4double& pMin, G4double& pMax) const override;
112
113 EInside Inside( const G4ThreeVector& p ) const override;
114
115 G4ThreeVector SurfaceNormal( const G4ThreeVector& p ) const override;
116
117 G4double DistanceToIn( const G4ThreeVector& p,
118 const G4ThreeVector& v ) const override;
119
120 G4double DistanceToIn( const G4ThreeVector& p ) const override;
121
122 G4double DistanceToOut( const G4ThreeVector& p,
123 const G4ThreeVector& v,
124 const G4bool calcNorm = false,
125 G4bool* validNorm = nullptr,
126 G4ThreeVector* n = nullptr ) const override;
127
128 G4double DistanceToOut( const G4ThreeVector& p ) const override;
129
130 G4GeometryType GetEntityType() const override;
131
132 G4ThreeVector GetPointOnSurface() const override;
133
134 G4bool IsFaceted() const override;
135
136 G4VSolid* Clone() const override;
137
138 std::ostream& StreamInfo( std::ostream& os ) const override;
139
140 // Visualisation functions
141
142 void DescribeYourselfTo (G4VGraphicsScene& scene) const override;
143 G4Polyhedron* CreatePolyhedron () const override;
144
145 G4Trd(__void__&);
146 // Fake default constructor for usage restricted to direct object
147 // persistency for clients requiring preallocation of memory for
148 // persistifiable objects.
149
150 G4Trd(const G4Trd& rhs);
151 G4Trd& operator=(const G4Trd& rhs);
152 // Copy constructor and assignment operator
153
154 private:
155
156 void CheckParameters();
157 // Check parameters
158
159 void MakePlanes();
160 // Set side planes
161
162 G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p ) const;
163 // Algorithm for SurfaceNormal() following the original
164 // specification for points not on the surface
165
166 private:
167
168 G4double halfCarTolerance;
169 G4double fDx1,fDx2,fDy1,fDy2,fDz,fHx,fHy;
170 struct { G4double a,b,c,d; } fPlanes[4];
171 };
172
173 #include "G4Trd.icc"
174
175 #endif
176
177 #endif
178