| Geant4 Cross Reference |
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25 //
26 // G4PolyconeSide
27 //
28 // Class description:
29 //
30 // Class implmenting a face that represents one conical side
31 // of a polycone:
32 //
33 // G4PolyconeSide( const G4PolyconeSideRZ *prevRZ,
34 // const G4PolyconeSideRZ *tail,
35 // const G4PolyconeSideRZ *head,
36 // const G4PolyconeSideRZ *nextRZ,
37 // G4double phiStart, G4double deltaPhi,
38 // G4bool phiIsOpen, G4bool isAllBehind=false )
39 //
40 // Values for r1,z1 and r2,z2 should be specified in clockwise
41 // order in (r,z).
42
43 // Author: David C. Williams (davidw@scipp.ucsc.edu)
44 // --------------------------------------------------------------------
45 #ifndef G4POLYCONESIDE_HH
46 #define G4POLYCONESIDE_HH
47
48 #include "G4VCSGface.hh"
49
50 class G4IntersectingCone;
51
52 struct G4PolyconeSideRZ
53 {
54 G4double r, z; // start of vector
55 };
56
57 // ----------------------------------------------------------------------------
58 // MT-specific utility code
59
60 #include "G4GeomSplitter.hh"
61
62 // The class G4PlSideData is introduced to encapsulate the
63 // fields of the class G4PolyconeSide that may not be read-only.
64 //
65 class G4PlSideData
66 {
67 public:
68
69 void initialize()
70 {
71 fPhix = 0.; fPhiy = 0.; fPhiz = 0.; fPhik = 0.;
72 }
73
74 G4double fPhix=0., fPhiy=0., fPhiz=0., fPhik=0.; // Cached values for phi
75 };
76
77 // The type G4PlSideManager is introduced to
78 // encapsulate the methods used by both the master thread and
79 // worker threads to allocate memory space for the fields encapsulated
80 // by the class G4PlSideData.
81 //
82 using G4PlSideManager = G4GeomSplitter<G4PlSideData>;
83
84 //
85 // ----------------------------------------------------------------------------
86
87 class G4PolyconeSide : public G4VCSGface
88 {
89 public:
90
91 G4PolyconeSide( const G4PolyconeSideRZ* prevRZ,
92 const G4PolyconeSideRZ* tail,
93 const G4PolyconeSideRZ* head,
94 const G4PolyconeSideRZ* nextRZ,
95 G4double phiStart, G4double deltaPhi,
96 G4bool phiIsOpen, G4bool isAllBehind = false );
97 ~G4PolyconeSide() override;
98
99 G4PolyconeSide( const G4PolyconeSide& source );
100 G4PolyconeSide& operator=( const G4PolyconeSide& source );
101
102 G4bool Intersect(const G4ThreeVector& p, const G4ThreeVector& v,
103 G4bool outgoing, G4double surfTolerance,
104 G4double& distance, G4double &distFromSurface,
105 G4ThreeVector& normal, G4bool& isAllBehind) override;
106
107 G4double Distance( const G4ThreeVector& p, G4bool outgoing ) override;
108
109 EInside Inside( const G4ThreeVector& p, G4double tolerance,
110 G4double* bestDistance ) override;
111
112 G4ThreeVector Normal( const G4ThreeVector& p,
113 G4double* bestDistance ) override;
114
115 G4double Extent( const G4ThreeVector axis ) override;
116
117 void CalculateExtent( const EAxis axis,
118 const G4VoxelLimits& voxelLimit,
119 const G4AffineTransform& tranform,
120 G4SolidExtentList& extentList ) override;
121
122 G4VCSGface* Clone() override { return new G4PolyconeSide( *this ); }
123
124 G4double SurfaceArea() override;
125 G4ThreeVector GetPointOnFace() override;
126
127 G4PolyconeSide(__void__&);
128 // Fake default constructor for usage restricted to direct object
129 // persistency for clients requiring preallocation of memory for
130 // persistifiable objects.
131
132 inline G4int GetInstanceID() const { return instanceID; }
133 // Returns the instance ID.
134
135 static const G4PlSideManager& GetSubInstanceManager();
136 // Returns the private data instance manager.
137
138 protected:
139
140 G4double DistanceAway( const G4ThreeVector& p, G4bool opposite,
141 G4double& distOutside2,
142 G4double* rzNorm = nullptr );
143
144 G4double DistanceAway( const G4ThreeVector& p, G4double& distOutside2,
145 G4double* edgeRZnorm );
146
147 G4bool PointOnCone( const G4ThreeVector& hit, G4double normSign,
148 const G4ThreeVector& p,
149 const G4ThreeVector& v, G4ThreeVector& normal );
150
151 void CopyStuff( const G4PolyconeSide& source );
152
153 static void FindLineIntersect( G4double x1, G4double y1,
154 G4double tx1, G4double ty1,
155 G4double x2, G4double y2,
156 G4double tx2, G4double ty2,
157 G4double& x, G4double& y );
158
159 G4double GetPhi( const G4ThreeVector& p );
160
161 protected:
162
163 G4double r[2], z[2]; // r, z parameters, in specified order
164 G4double startPhi, // Start phi (0 to 2pi), if phiIsOpen
165 deltaPhi; // Delta phi (0 to 2pi), if phiIsOpen
166 G4bool phiIsOpen = false; // True if there is a phi slice
167 G4bool allBehind = false; // True if the entire solid is "behind" this face
168
169 G4IntersectingCone* cone = nullptr; // Our intersecting utility class
170
171 G4double rNorm, zNorm; // Normal to surface in r,z space
172 G4double rS, zS; // Unit vector along surface in r,z space
173 G4double length; // Length of face in r,z space
174 G4double prevRS,
175 prevZS; // Unit vector along previous polyconeSide
176 G4double nextRS,
177 nextZS; // Unit vector along next polyconeSide
178
179 G4double rNormEdge[2],
180 zNormEdge[2]; // Normal to edges
181
182 G4int ncorners = 0;
183 G4ThreeVector* corners = nullptr; // The coordinates of the corners
184 // (if phiIsOpen)
185 private:
186
187 G4double kCarTolerance; // Geometrical surface thickness
188 G4double fSurfaceArea = 0.0; // Used for surface calculation
189
190 G4int instanceID;
191 // This field is used as instance ID.
192 G4GEOM_DLL static G4PlSideManager subInstanceManager;
193 // This field helps to use the class G4PlSideManager introduced above.
194 };
195
196 #endif
197