| Geant4 Cross Reference |
1 //
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25 //
26 // G4Polyhedra
27 //
28 // Class description:
29 //
30 // Class implementing a CSG-like type "PGON" Geant 3.21 volume,
31 // inherited from class G4VCSGfaceted:
32 //
33 // G4Polyhedra( const G4String& name,
34 // G4double phiStart, - initial phi starting angle
35 // G4double phiTotal, - total phi angle
36 // G4int numSide, - number sides
37 // G4int numZPlanes, - number of z planes
38 // const G4double zPlane[], - position of z planes
39 // const G4double rInner[], - tangent distance to inner surface
40 // const G4double rOuter[] ) - tangent distance to outer surface
41 //
42 // G4Polyhedra( const G4String& name,
43 // G4double phiStart, - initial phi starting angle
44 // G4double phiTotal, - total phi angle
45 // G4int numSide, - number sides
46 // G4int numRZ, - number corners in r,z space
47 // const G4double r[], - r coordinate of these corners
48 // const G4double z[] ) - z coordinate of these corners
49
50 // Author: David C. Williams (davidw@scipp.ucsc.edu)
51 // --------------------------------------------------------------------
52 #ifndef G4POLYHEDRA_HH
53 #define G4POLYHEDRA_HH
54
55 #include "G4GeomTypes.hh"
56
57 #if defined(G4GEOM_USE_USOLIDS)
58 #define G4GEOM_USE_UPOLYHEDRA 1
59 #endif
60
61 #if defined(G4GEOM_USE_UPOLYHEDRA)
62 #define G4UPolyhedra G4Polyhedra
63 #include "G4UPolyhedra.hh"
64 #else
65
66 #include "G4VCSGfaceted.hh"
67 #include "G4PolyhedraSide.hh"
68 #include "G4PolyhedraHistorical.hh"
69 #include "G4Polyhedron.hh"
70
71 class G4EnclosingCylinder;
72 class G4ReduciblePolygon;
73
74 class G4Polyhedra : public G4VCSGfaceted
75 {
76 public:
77
78 G4Polyhedra(const G4String& name,
79 G4double phiStart, // initial phi starting angle
80 G4double phiTotal, // total phi angle
81 G4int numSide, // number sides
82 G4int numZPlanes, // number of z planes
83 const G4double zPlane[], // position of z planes
84 const G4double rInner[], // tangent distance to inner surface
85 const G4double rOuter[] ); // tangent distance to outer surface
86
87 G4Polyhedra(const G4String& name,
88 G4double phiStart, // initial phi starting angle
89 G4double phiTotal, // total phi angle
90 G4int numSide, // number sides
91 G4int numRZ, // number corners in r,z space
92 const G4double r[], // r coordinate of these corners
93 const G4double z[] ); // z coordinate of these corners
94
95 ~G4Polyhedra() override;
96
97 EInside Inside( const G4ThreeVector& p ) const override;
98 G4double DistanceToIn( const G4ThreeVector& p,
99 const G4ThreeVector& v ) const override;
100 G4double DistanceToIn( const G4ThreeVector& p ) const override;
101
102 void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
103 G4bool CalculateExtent(const EAxis pAxis,
104 const G4VoxelLimits& pVoxelLimit,
105 const G4AffineTransform& pTransform,
106 G4double& pmin, G4double& pmax) const override;
107
108 void ComputeDimensions( G4VPVParameterisation* p,
109 const G4int n,
110 const G4VPhysicalVolume* pRep) override;
111
112 G4GeometryType GetEntityType() const override;
113
114 G4bool IsFaceted () const override;
115
116 G4VSolid* Clone() const override;
117
118 G4double GetCubicVolume() override;
119 G4double GetSurfaceArea() override;
120
121 G4ThreeVector GetPointOnSurface() const override;
122
123 std::ostream& StreamInfo( std::ostream& os ) const override;
124
125 G4Polyhedron* CreatePolyhedron() const override;
126
127 G4bool Reset();
128
129 // Accessors
130
131 inline G4int GetNumSide() const;
132 inline G4double GetStartPhi() const;
133 inline G4double GetEndPhi() const;
134 inline G4double GetSinStartPhi() const;
135 inline G4double GetCosStartPhi() const;
136 inline G4double GetSinEndPhi() const;
137 inline G4double GetCosEndPhi() const;
138 inline G4bool IsOpen() const;
139 inline G4bool IsGeneric() const;
140 inline G4int GetNumRZCorner() const;
141 inline G4PolyhedraSideRZ GetCorner( const G4int index ) const;
142
143 inline G4PolyhedraHistorical* GetOriginalParameters() const;
144 // Returns internal scaled parameters.
145 inline void SetOriginalParameters(G4PolyhedraHistorical* pars);
146 // Sets internal parameters. Parameters 'Rmin' and 'Rmax' in input must
147 // be scaled first by a factor computed as 'cos(0.5*phiTotal/theNumSide)',
148 // if not already scaled.
149
150 G4Polyhedra(__void__&);
151 // Fake default constructor for usage restricted to direct object
152 // persistency for clients requiring preallocation of memory for
153 // persistifiable objects.
154
155 G4Polyhedra( const G4Polyhedra& source );
156 G4Polyhedra& operator=( const G4Polyhedra& source );
157 // Copy constructor and assignment operator.
158
159 protected:
160
161 void SetOriginalParameters(G4ReduciblePolygon* rz);
162 // Sets internal parameters for the generic constructor.
163
164 void Create( G4double phiStart, // initial phi starting angle
165 G4double phiTotal, // total phi angle
166 G4int numSide, // number sides
167 G4ReduciblePolygon* rz ); // rz coordinates
168 // Generates the shape and is called by each constructor, after the
169 // conversion of the arguments
170
171 void CopyStuff( const G4Polyhedra& source );
172 void DeleteStuff();
173
174 // Methods for generation of random points on surface
175
176 void SetSurfaceElements() const;
177
178 protected:
179
180 G4int numSide = 0; // Number of sides
181 G4double startPhi; // Starting phi value (0 < phiStart < 2pi)
182 G4double endPhi; // end phi value (0 < endPhi-phiStart < 2pi)
183 G4bool phiIsOpen = false; // true if there is a phi segment
184 G4bool genericPgon = false; // true if created through 2nd generic ctor
185 G4int numCorner = 0; // number RZ points
186 G4PolyhedraSideRZ* corners = nullptr; // our corners
187 G4PolyhedraHistorical* original_parameters = nullptr; // original input pars
188
189 G4EnclosingCylinder* enclosingCylinder = nullptr;
190
191 struct surface_element { G4double area=0.; G4int i0=0, i1=0, i2=0; };
192 mutable std::vector<surface_element>* fElements = nullptr;
193 };
194
195 #include "G4Polyhedra.icc"
196
197 #endif
198
199 #endif
200