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1 //
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25 //
26 // G4Polycone
27 //
28 // Class description:
29 //
30 // Class implementing a CSG-like type "PCON" Geant 3.21 volume,
31 // inherited from class G4VCSGfaceted:
32 //
33 // G4Polycone( const G4String& name,
34 // G4double phiStart, // initial phi starting angle
35 // G4double phiTotal, // total phi angle
36 // G4int numZPlanes, // number of z planes
37 // const G4double zPlane[], // position of z planes
38 // const G4double rInner[], // tangent distance to inner surface
39 // const G4double rOuter[]) // tangent distance to outer surface
40 //
41 // Alternative constructor, but limited to increasing-only Z sections:
42 //
43 // G4Polycone( const G4String& name,
44 // G4double phiStart, // initial phi starting angle
45 // G4double phiTotal, // total phi angle
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 G4POLYCONE_HH
53 #define G4POLYCONE_HH
54
55 #include "G4GeomTypes.hh"
56
57 #if defined(G4GEOM_USE_USOLIDS)
58 #define G4GEOM_USE_UPOLYCONE 1
59 #endif
60
61 #if defined(G4GEOM_USE_UPOLYCONE)
62 #define G4UPolycone G4Polycone
63 #include "G4UPolycone.hh"
64 #else
65
66 #include "G4VCSGfaceted.hh"
67 #include "G4PolyconeSide.hh"
68 #include "G4PolyconeHistorical.hh"
69 #include "G4Polyhedron.hh"
70
71 class G4EnclosingCylinder;
72 class G4ReduciblePolygon;
73 class G4VCSGface;
74
75 class G4Polycone : public G4VCSGfaceted
76 {
77 public:
78
79 G4Polycone( const G4String& name,
80 G4double phiStart, // initial phi starting angle
81 G4double phiTotal, // total phi angle
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 G4Polycone( const G4String& name,
88 G4double phiStart, // initial phi starting angle
89 G4double phiTotal, // total phi angle
90 G4int numRZ, // number corners in r,z space
91 const G4double r[], // r coordinate of these corners
92 const G4double z[] ); // z coordinate of these corners
93
94 ~G4Polycone() override;
95
96 EInside Inside( const G4ThreeVector& p ) const override;
97 G4double DistanceToIn( const G4ThreeVector& p,
98 const G4ThreeVector& v ) const override;
99 G4double DistanceToIn( const G4ThreeVector& p ) const override;
100
101 void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
102 G4bool CalculateExtent(const EAxis pAxis,
103 const G4VoxelLimits& pVoxelLimit,
104 const G4AffineTransform& pTransform,
105 G4double& pmin, G4double& pmax) const override;
106
107 G4double GetCubicVolume() override;
108 G4double GetSurfaceArea() override;
109
110 G4ThreeVector GetPointOnSurface() const override;
111
112 void ComputeDimensions( G4VPVParameterisation* p,
113 const G4int n,
114 const G4VPhysicalVolume* pRep ) override;
115
116 G4GeometryType GetEntityType() const override;
117
118 G4VSolid* Clone() const override;
119
120 std::ostream& StreamInfo(std::ostream& os) const override;
121
122 G4Polyhedron* CreatePolyhedron() const override;
123
124 G4bool Reset();
125
126 // Accessors
127
128 inline G4double GetStartPhi() const;
129 inline G4double GetEndPhi() const;
130 inline G4double GetSinStartPhi() const;
131 inline G4double GetCosStartPhi() const;
132 inline G4double GetSinEndPhi() const;
133 inline G4double GetCosEndPhi() const;
134 inline G4bool IsOpen() const;
135 inline G4int GetNumRZCorner() const;
136 inline G4PolyconeSideRZ GetCorner(G4int index) const;
137 inline G4PolyconeHistorical* GetOriginalParameters() const;
138 inline void SetOriginalParameters(G4PolyconeHistorical* pars);
139
140 G4Polycone(__void__&);
141 // Fake default constructor for usage restricted to direct object
142 // persistency for clients requiring preallocation of memory for
143 // persistifiable objects.
144
145 G4Polycone( const G4Polycone& source );
146 G4Polycone &operator=( const G4Polycone& source );
147 // Copy constructor and assignment operator.
148
149 protected:
150
151 // Generic initializer, called by all constructors
152
153 G4bool SetOriginalParameters(G4ReduciblePolygon* rz);
154
155 void Create( G4double phiStart, // initial phi starting angle
156 G4double phiTotal, // total phi angle
157 G4ReduciblePolygon* rz ); // r/z coordinate of these corners
158
159 void CopyStuff( const G4Polycone& source );
160
161 // Methods for random point generation
162
163 void SetSurfaceElements() const;
164
165 protected:
166
167 // Here are our parameters
168
169 G4double startPhi; // Starting phi value (0 < phiStart < 2pi)
170 G4double endPhi; // End phi value (0 < endPhi-phiStart < 2pi)
171 G4bool phiIsOpen = false; // True if there is a phi segment
172 G4int numCorner; // Number RZ points
173 G4PolyconeSideRZ* corners = nullptr; // Corner r,z points
174 G4PolyconeHistorical* original_parameters = nullptr; // Original input pars
175
176 G4EnclosingCylinder* enclosingCylinder = nullptr; // Our quick test
177
178 struct surface_element { G4double area = 0.; G4int i0 = 0, i1 = 0, i2 = 0; };
179 mutable std::vector<surface_element>* fElements = nullptr;
180 };
181
182 #include "G4Polycone.icc"
183
184 #endif
185
186 #endif
187