source: trunk/source/geometry/solids/specific/include/G4PolyhedraSide.hh@ 1347

Last change on this file since 1347 was 1337, checked in by garnier, 15 years ago

tag geant4.9.4 beta 1 + modifs locales
File size: 8.1 KB
Line 
1//
2// ********************************************************************
3// * License and Disclaimer *
4// * *
5// * The Geant4 software is copyright of the Copyright Holders of *
6// * the Geant4 Collaboration. It is provided under the terms and *
7// * conditions of the Geant4 Software License, included in the file *
8// * LICENSE and available at http://cern.ch/geant4/license . These *
9// * include a list of copyright holders. *
10// * *
11// * Neither the authors of this software system, nor their employing *
12// * institutes,nor the agencies providing financial support for this *
13// * work make any representation or warranty, express or implied, *
14// * regarding this software system or assume any liability for its *
15// * use. Please see the license in the file LICENSE and URL above *
16// * for the full disclaimer and the limitation of liability. *
17// * *
18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
20// * By using, copying, modifying or distributing the software (or *
21// * any work based on the software) you agree to acknowledge its *
22// * use in resulting scientific publications, and indicate your *
23// * acceptance of all terms of the Geant4 Software license. *
24// ********************************************************************
25//
26//
27// $Id: G4PolyhedraSide.hh,v 1.12 2010/02/24 11:18:25 gcosmo Exp $
28// GEANT4 tag $Name: geant4-09-04-beta-01 $
29//
30//
31// --------------------------------------------------------------------
32// GEANT 4 class header file
33//
34//
35// G4PolyhedraSide
36//
37// Class description:
38//
39// Class implementing a face that represents one segmented side
40// of a polyhedra:
41//
42// G4PolyhedraSide( const G4PolyhedraSideRZ *prevRZ,
43// const G4PolyhedraSideRZ *tail,
44// const G4PolyhedraSideRZ *head,
45// const G4PolyhedraSideRZ *nextRZ,
46// G4int numSide,
47// G4double phiStart, G4double phiTotal,
48// G4bool phiIsOpen, G4bool isAllBehind=false )
49//
50// Values for r1,z1 and r2,z2 should be specified in clockwise
51// order in (r,z).
52
53// Author:
54// David C. Williams (davidw@scipp.ucsc.edu)
55// --------------------------------------------------------------------
56
57#ifndef G4PolyhedraSide_hh
58#define G4PolyhedraSide_hh
59
60#include "G4VCSGface.hh"
61
62class G4IntersectingCone;
63
64struct G4PolyhedraSideRZ
65{
66 G4double r, z; // start of vector
67};
68
69class G4PolyhedraSide : public G4VCSGface
70{
71
72 public: // with description
73
74 G4PolyhedraSide( const G4PolyhedraSideRZ *prevRZ,
75 const G4PolyhedraSideRZ *tail,
76 const G4PolyhedraSideRZ *head,
77 const G4PolyhedraSideRZ *nextRZ,
78 G4int numSide,
79 G4double phiStart, G4double phiTotal,
80 G4bool phiIsOpen, G4bool isAllBehind=false );
81 virtual ~G4PolyhedraSide();
82
83 G4PolyhedraSide( const G4PolyhedraSide &source );
84 G4PolyhedraSide& operator=( const G4PolyhedraSide &source );
85
86 G4bool Intersect( const G4ThreeVector &p, const G4ThreeVector &v,
87 G4bool outgoing, G4double surfTolerance,
88 G4double &distance, G4double &distFromSurface,
89 G4ThreeVector &normal, G4bool &allBehind );
90
91 G4double Distance( const G4ThreeVector &p, G4bool outgoing );
92
93 EInside Inside( const G4ThreeVector &p, G4double tolerance,
94 G4double *bestDistance );
95
96 G4ThreeVector Normal( const G4ThreeVector &p, G4double *bestDistance );
97
98 G4double Extent( const G4ThreeVector axis );
99
100 void CalculateExtent( const EAxis axis,
101 const G4VoxelLimits &voxelLimit,
102 const G4AffineTransform &tranform,
103 G4SolidExtentList &extentList );
104
105 G4VCSGface *Clone() { return new G4PolyhedraSide( *this ); }
106
107 public: // without description
108
109 // Methods used for GetPointOnSurface()
110
111 G4double SurfaceTriangle( G4ThreeVector p1,
112 G4ThreeVector p2,
113 G4ThreeVector p3,
114 G4ThreeVector *p4 );
115 G4ThreeVector GetPointOnPlane( G4ThreeVector p0, G4ThreeVector p1,
116 G4ThreeVector p2, G4ThreeVector p3,
117 G4double *Area );
118 G4double SurfaceArea();
119 G4ThreeVector GetPointOnFace();
120
121 public: // without description
122
123 G4PolyhedraSide(__void__&);
124 // Fake default constructor for usage restricted to direct object
125 // persistency for clients requiring preallocation of memory for
126 // persistifiable objects.
127
128 protected:
129
130 //
131 // A couple internal data structures
132 //
133 struct sG4PolyhedraSideVec; // Secret recipe for allowing
134 friend struct sG4PolyhedraSideVec; // protected nested structures
135
136 typedef struct sG4PolyhedraSideEdge
137 {
138 G4ThreeVector normal; // Unit normal to this edge
139 G4ThreeVector corner[2]; // The two corners of this phi edge
140 G4ThreeVector cornNorm[2]; // The normals of these corners
141 } G4PolyhedraSideEdge;
142
143 typedef struct sG4PolyhedraSideVec
144 {
145 G4ThreeVector normal, // Normal (point out of the shape)
146 center, // Point in center of side
147 surfPhi, // Unit vector on surface pointing along phi
148 surfRZ; // Unit vector on surface pointing along R/Z
149 G4PolyhedraSideEdge *edges[2]; // The phi boundary edges to this side
150 // [0]=low phi [1]=high phi
151 G4ThreeVector edgeNorm[2]; // RZ edge normals [i] at {r[i],z[i]}
152 } G4PolyhedraSideVec;
153
154 G4bool IntersectSidePlane( const G4ThreeVector &p, const G4ThreeVector &v,
155 const G4PolyhedraSideVec vec,
156 G4double normSign,
157 G4double surfTolerance,
158 G4double &distance,
159 G4double &distFromSurface );
160
161 G4int LineHitsSegments( const G4ThreeVector &p,
162 const G4ThreeVector &v,
163 G4int *i1, G4int *i2 );
164
165 G4int ClosestPhiSegment( G4double phi );
166
167 G4int PhiSegment( G4double phi );
168
169 G4double GetPhi( const G4ThreeVector& p );
170
171 G4double DistanceToOneSide( const G4ThreeVector &p,
172 const G4PolyhedraSideVec &vec,
173 G4double *normDist );
174
175 G4double DistanceAway( const G4ThreeVector &p,
176 const G4PolyhedraSideVec &vec,
177 G4double *normDist );
178
179 void CopyStuff( const G4PolyhedraSide &source );
180
181 protected:
182
183 G4int numSide; // Number sides
184 G4double r[2], z[2]; // r, z parameters, in specified order
185 G4double startPhi, // Start phi (0 to 2pi), if phiIsOpen
186 deltaPhi, // Delta phi (0 to 2pi), if phiIsOpen
187 endPhi; // End phi (>startPhi), if phiIsOpen
188 G4bool phiIsOpen; // True if there is a phi slice
189 G4bool allBehind; // True if the entire solid is "behind" this face
190
191 G4IntersectingCone *cone; // Our intersecting cone
192
193 G4PolyhedraSideVec *vecs; // Vector set for each facet of our face
194 G4PolyhedraSideEdge *edges; // The edges belong to vecs
195 G4double lenRZ, // RZ length of each side
196 lenPhi[2]; // Phi dimensions of each side
197 G4double edgeNorm; // Normal in RZ/Phi space to each side
198
199 private:
200
201 std::pair<G4ThreeVector, G4double> fPhi; // Cached value for phi
202 G4double kCarTolerance; // Geometrical surface thickness
203 G4double fSurfaceArea; // Surface Area
204};
205
206#endif
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