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Geant4/geometry/solids/specific/src/G4UGenericTrap.cc

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Differences between /geometry/solids/specific/src/G4UGenericTrap.cc (Version 11.3.0) and /geometry/solids/specific/src/G4UGenericTrap.cc (Version 5.2.p2)


  1 //                                                  1 
  2 // *******************************************    
  3 // * License and Disclaimer                       
  4 // *                                              
  5 // * The  Geant4 software  is  copyright of th    
  6 // * the Geant4 Collaboration.  It is provided    
  7 // * conditions of the Geant4 Software License    
  8 // * LICENSE and available at  http://cern.ch/    
  9 // * include a list of copyright holders.         
 10 // *                                              
 11 // * Neither the authors of this software syst    
 12 // * institutes,nor the agencies providing fin    
 13 // * work  make  any representation or  warran    
 14 // * regarding  this  software system or assum    
 15 // * use.  Please see the license in the file     
 16 // * for the full disclaimer and the limitatio    
 17 // *                                              
 18 // * This  code  implementation is the result     
 19 // * technical work of the GEANT4 collaboratio    
 20 // * By using,  copying,  modifying or  distri    
 21 // * any work based  on the software)  you  ag    
 22 // * use  in  resulting  scientific  publicati    
 23 // * acceptance of all terms of the Geant4 Sof    
 24 // *******************************************    
 25 //                                                
 26 // Implementation of G4UGenericTrap wrapper cl    
 27 //                                                
 28 // 30.10.13 G.Cosmo, CERN                         
 29 // -------------------------------------------    
 30                                                   
 31 #include "G4GenericTrap.hh"                       
 32 #include "G4UGenericTrap.hh"                      
 33                                                   
 34 #if ( defined(G4GEOM_USE_USOLIDS) || defined(G    
 35                                                   
 36 #include "G4AffineTransform.hh"                   
 37 #include "G4VPVParameterisation.hh"               
 38 #include "G4BoundingEnvelope.hh"                  
 39                                                   
 40 #include "G4Polyhedron.hh"                        
 41                                                   
 42 using namespace CLHEP;                            
 43                                                   
 44 //////////////////////////////////////////////    
 45 //                                                
 46 // Constructor (generic parameters)               
 47 //                                                
 48 G4UGenericTrap::G4UGenericTrap(const G4String&    
 49                                const std::vect    
 50   : Base_t(name), fVisSubdivisions(0)             
 51 {                                                 
 52   SetZHalfLength(halfZ);                          
 53   Initialise(vertices);                           
 54 }                                                 
 55                                                   
 56                                                   
 57 //////////////////////////////////////////////    
 58 //                                                
 59 // Fake default constructor - sets only member    
 60 //                            for usage restri    
 61 //                                                
 62 G4UGenericTrap::G4UGenericTrap(__void__& a)       
 63   : Base_t(a), fVisSubdivisions(0)                
 64 {                                                 
 65 }                                                 
 66                                                   
 67                                                   
 68 //////////////////////////////////////////////    
 69 //                                                
 70 // Destructor                                     
 71 //                                                
 72 G4UGenericTrap::~G4UGenericTrap() = default;      
 73                                                   
 74                                                   
 75 //////////////////////////////////////////////    
 76 //                                                
 77 // Copy constructor                               
 78 //                                                
 79 G4UGenericTrap::G4UGenericTrap(const G4UGeneri    
 80   : Base_t(source), fVisSubdivisions(source.fV    
 81     fVertices(source.fVertices)                   
 82 {                                                 
 83 }                                                 
 84                                                   
 85                                                   
 86 //////////////////////////////////////////////    
 87 //                                                
 88 // Assignment operator                            
 89 //                                                
 90 G4UGenericTrap&                                   
 91 G4UGenericTrap::operator=(const G4UGenericTrap    
 92 {                                                 
 93   if (this == &source) return *this;              
 94                                                   
 95   Base_t::operator=( source );                    
 96   fVertices = source.fVertices;                   
 97   fVisSubdivisions = source.fVisSubdivisions;     
 98                                                   
 99   return *this;                                   
100 }                                                 
101                                                   
102 //////////////////////////////////////////////    
103 //                                                
104 // Accessors & modifiers                          
105 //                                                
106 G4double G4UGenericTrap::GetZHalfLength() cons    
107 {                                                 
108   return GetDZ();                                 
109 }                                                 
110 G4int G4UGenericTrap::GetNofVertices() const      
111 {                                                 
112   return fVertices.size();                        
113 }                                                 
114 G4TwoVector G4UGenericTrap::GetVertex(G4int in    
115 {                                                 
116   return { GetVerticesX()[index], GetVerticesY    
117 }                                                 
118 const std::vector<G4TwoVector>& G4UGenericTrap    
119 {                                                 
120   return fVertices;                               
121 }                                                 
122 G4double G4UGenericTrap::GetTwistAngle(G4int i    
123 {                                                 
124   return GetTwist(index);                         
125 }                                                 
126 G4bool G4UGenericTrap::IsTwisted() const          
127 {                                                 
128   return !IsPlanar();                             
129 }                                                 
130 G4int G4UGenericTrap::GetVisSubdivisions() con    
131 {                                                 
132   return fVisSubdivisions;                        
133 }                                                 
134                                                   
135 void G4UGenericTrap::SetVisSubdivisions(G4int     
136 {                                                 
137   fVisSubdivisions = subdiv;                      
138 }                                                 
139                                                   
140 void G4UGenericTrap::SetZHalfLength(G4double h    
141 {                                                 
142   SetDZ(halfZ);                                   
143 }                                                 
144                                                   
145 void G4UGenericTrap::Initialise(const std::vec    
146 {                                                 
147   G4double verticesx[8], verticesy[8];            
148   for (G4int i=0; i<8; ++i)                       
149   {                                               
150     fVertices.push_back(v[i]);                    
151     verticesx[i] = v[i].x();                      
152     verticesy[i] = v[i].y();                      
153   }                                               
154   Initialize(verticesx, verticesy, GetZHalfLen    
155 }                                                 
156                                                   
157 //////////////////////////////////////////////    
158 //                                                
159 // Get bounding box                               
160                                                   
161 void G4UGenericTrap::BoundingLimits(G4ThreeVec    
162                                     G4ThreeVec    
163 {                                                 
164   U3Vector vmin, vmax;                            
165   Extent(vmin,vmax);                              
166   pMin.set(vmin.x(),vmin.y(),vmin.z());           
167   pMax.set(vmax.x(),vmax.y(),vmax.z());           
168                                                   
169   // Check correctness of the bounding box        
170   //                                              
171   if (pMin.x() >= pMax.x() || pMin.y() >= pMax    
172   {                                               
173     std::ostringstream message;                   
174     message << "Bad bounding box (min >= max)     
175             << GetName() << " !"                  
176             << "\npMin = " << pMin                
177             << "\npMax = " << pMax;               
178     G4Exception("G4UGenericTrap::BoundingLimit    
179                 JustWarning, message);            
180     StreamInfo(G4cout);                           
181   }                                               
182 }                                                 
183                                                   
184 //////////////////////////////////////////////    
185 //                                                
186 // Calculate extent under transform and specif    
187                                                   
188 G4bool                                            
189 G4UGenericTrap::CalculateExtent(const EAxis pA    
190                                 const G4VoxelL    
191                                 const G4Affine    
192                                       G4double    
193 {                                                 
194   G4ThreeVector bmin, bmax;                       
195   G4bool exist;                                   
196                                                   
197   // Check bounding box (bbox)                    
198   //                                              
199   BoundingLimits(bmin,bmax);                      
200   G4BoundingEnvelope bbox(bmin,bmax);             
201 #ifdef G4BBOX_EXTENT                              
202   return bbox.CalculateExtent(pAxis,pVoxelLimi    
203 #endif                                            
204   if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVox    
205   {                                               
206     return exist = pMin < pMax;                   
207   }                                               
208                                                   
209   // Set bounding envelope (benv) and calculat    
210   //                                              
211   // To build the bounding envelope with plane    
212   // the trapezoid is subdivided in triangles.    
213   // duplication of vertices in the bases in a    
214   // a convex polyhedron (some faces of the en    
215   //                                              
216   G4double dz = GetZHalfLength();                 
217   G4ThreeVectorList baseA(8), baseB(8);           
218   for (G4int i=0; i<4; ++i)                       
219   {                                               
220     G4TwoVector va = GetVertex(i);                
221     G4TwoVector vb = GetVertex(i+4);              
222     baseA[2*i].set(va.x(),va.y(),-dz);            
223     baseB[2*i].set(vb.x(),vb.y(), dz);            
224   }                                               
225   for (G4int i=0; i<4; ++i)                       
226   {                                               
227     G4int k1=2*i, k2=(2*i+2)%8;                   
228     G4double ax = (baseA[k2].x()-baseA[k1].x()    
229     G4double ay = (baseA[k2].y()-baseA[k1].y()    
230     G4double bx = (baseB[k2].x()-baseB[k1].x()    
231     G4double by = (baseB[k2].y()-baseB[k1].y()    
232     G4double znorm = ax*by - ay*bx;               
233     baseA[k1+1] = (znorm < 0.0) ? baseA[k2] :     
234     baseB[k1+1] = (znorm < 0.0) ? baseB[k1] :     
235   }                                               
236                                                   
237   std::vector<const G4ThreeVectorList *> polyg    
238   polygons[0] = &baseA;                           
239   polygons[1] = &baseB;                           
240                                                   
241   G4BoundingEnvelope benv(bmin,bmax,polygons);    
242   exist = benv.CalculateExtent(pAxis,pVoxelLim    
243   return exist;                                   
244 }                                                 
245                                                   
246 //////////////////////////////////////////////    
247 //                                                
248 // CreatePolyhedron()                             
249 //                                                
250 G4Polyhedron* G4UGenericTrap::CreatePolyhedron    
251 {                                                 
252   // Approximation of Twisted Side                
253   // Construct extra Points, if Twisted Side      
254   //                                              
255   G4Polyhedron* polyhedron;                       
256   G4int nVertices, nFacets;                       
257   G4double fDz = GetZHalfLength();                
258                                                   
259   G4int subdivisions = 0;                         
260   if (IsTwisted())                                
261   {                                               
262     if (GetVisSubdivisions() != 0)                
263     {                                             
264       subdivisions = GetVisSubdivisions();        
265     }                                             
266     else                                          
267     {                                             
268       // Estimation of Number of Subdivisions     
269       //                                          
270       G4double maxTwist = 0.;                     
271       for(G4int i = 0; i < 4; ++i)                
272       {                                           
273         if (GetTwistAngle(i) > maxTwist) { max    
274       }                                           
275                                                   
276       // Computes bounding vectors for the sha    
277       //                                          
278       G4double Dx, Dy;                            
279       G4ThreeVector minVec, maxVec;               
280       BoundingLimits(minVec, maxVec);             
281       Dx = 0.5*(maxVec.x() - minVec.y());         
282       Dy = 0.5*(maxVec.y() - minVec.y());         
283       if (Dy > Dx) { Dx = Dy; }                   
284                                                   
285       subdivisions = 8*G4int(maxTwist/(Dx*Dx*D    
286       if (subdivisions < 4)  { subdivisions =     
287       if (subdivisions > 30) { subdivisions =     
288     }                                             
289   }                                               
290   G4int sub4 = 4*subdivisions;                    
291   nVertices = 8 + subdivisions*4;                 
292   nFacets = 6 + subdivisions*4;                   
293   G4double cf = 1./(subdivisions + 1);            
294   polyhedron = new G4Polyhedron(nVertices, nFa    
295                                                   
296   // Set vertices                                 
297   //                                              
298   G4int icur = 0;                                 
299   for (G4int i = 0; i < 4; ++i)                   
300   {                                               
301     G4ThreeVector v(GetVertex(i).x(),GetVertex    
302     polyhedron->SetVertex(++icur, v);             
303   }                                               
304   for (G4int i = 0; i < subdivisions; ++i)        
305   {                                               
306     for (G4int j = 0; j < 4; ++j)                 
307     {                                             
308       G4TwoVector u = GetVertex(j)+cf*(i+1)*(     
309       G4ThreeVector v(u.x(),u.y(),-fDz+cf*2*fD    
310       polyhedron->SetVertex(++icur, v);           
311     }                                             
312   }                                               
313   for (G4int i = 4; i < 8; ++i)                   
314   {                                               
315     G4ThreeVector v(GetVertex(i).x(),GetVertex    
316     polyhedron->SetVertex(++icur, v);             
317   }                                               
318                                                   
319   // Set facets                                   
320   //                                              
321   icur = 0;                                       
322   polyhedron->SetFacet(++icur, 1, 4, 3, 2); //    
323   for (G4int i = 0; i < subdivisions + 1; ++i)    
324   {                                               
325     G4int is = i*4;                               
326     polyhedron->SetFacet(++icur, 5+is, 8+is, 4    
327     polyhedron->SetFacet(++icur, 8+is, 7+is, 3    
328     polyhedron->SetFacet(++icur, 7+is, 6+is, 2    
329     polyhedron->SetFacet(++icur, 6+is, 5+is, 1    
330   }                                               
331   polyhedron->SetFacet(++icur, 5+sub4, 6+sub4,    
332                                                   
333   polyhedron->SetReferences();                    
334   polyhedron->InvertFacets();                     
335                                                   
336   return polyhedron;                              
337 }                                                 
338                                                   
339 #endif  // G4GEOM_USE_USOLIDS                     
340