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25 // 25 //
26 // Implementation of G4UGenericPolycone wrappe <<
27 // 26 //
28 // 30.10.13 G.Cosmo, CERN << 27 // $Id:$
>> 28 //
>> 29 //
>> 30 // Implementation of G4UGenericPolycone wrapper class
29 // ------------------------------------------- 31 // --------------------------------------------------------------------
30 32
31 #include "G4GenericPolycone.hh" 33 #include "G4GenericPolycone.hh"
32 #include "G4UGenericPolycone.hh" 34 #include "G4UGenericPolycone.hh"
33 35
34 #if ( defined(G4GEOM_USE_USOLIDS) || defined(G 36 #if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )
35 37
36 #include "G4GeomTools.hh" 38 #include "G4GeomTools.hh"
37 #include "G4AffineTransform.hh" 39 #include "G4AffineTransform.hh"
38 #include "G4VPVParameterisation.hh" 40 #include "G4VPVParameterisation.hh"
39 #include "G4BoundingEnvelope.hh" 41 #include "G4BoundingEnvelope.hh"
40 42
41 #include "G4Polyhedron.hh" 43 #include "G4Polyhedron.hh"
42 44
43 using namespace CLHEP; 45 using namespace CLHEP;
44 46
45 ////////////////////////////////////////////// 47 ////////////////////////////////////////////////////////////////////////
46 // 48 //
47 // Constructor (generic parameters) 49 // Constructor (generic parameters)
48 // 50 //
49 G4UGenericPolycone::G4UGenericPolycone(const G << 51 G4UGenericPolycone::G4UGenericPolycone(const G4String& name,
50 G 52 G4double phiStart,
51 G 53 G4double phiTotal,
52 G 54 G4int numRZ,
53 const G 55 const G4double r[],
54 const G 56 const G4double z[] )
55 : Base_t(name, phiStart, phiTotal, numRZ, r, << 57 : G4USolid(name, new UGenericPolycone(name, phiStart, phiTotal, numRZ, r, z))
56 { << 58 {
57 wrStart = phiStart; while (wrStart < 0) wrSt <<
58 wrDelta = phiTotal; <<
59 if (wrDelta <= 0 || wrDelta >= twopi*(1-DBL_ <<
60 { <<
61 wrStart = 0; <<
62 wrDelta = twopi; <<
63 } <<
64 rzcorners.resize(0); <<
65 for (G4int i=0; i<numRZ; ++i) <<
66 { <<
67 rzcorners.emplace_back(r[i],z[i]); <<
68 } <<
69 std::vector<G4int> iout; <<
70 G4GeomTools::RemoveRedundantVertices(rzcorne <<
71 } 59 }
72 60
73 61
74 ////////////////////////////////////////////// 62 ////////////////////////////////////////////////////////////////////////
75 // 63 //
76 // Fake default constructor - sets only member 64 // Fake default constructor - sets only member data and allocates memory
77 // for usage restri 65 // for usage restricted to object persistency.
78 // 66 //
79 G4UGenericPolycone::G4UGenericPolycone(__void_ 67 G4UGenericPolycone::G4UGenericPolycone(__void__& a)
80 : Base_t(a) << 68 : G4USolid(a)
81 { 69 {
82 } 70 }
83 71
84 72
85 ////////////////////////////////////////////// 73 //////////////////////////////////////////////////////////////////////////
86 // 74 //
87 // Destructor 75 // Destructor
88 // 76 //
89 G4UGenericPolycone::~G4UGenericPolycone() = de << 77 G4UGenericPolycone::~G4UGenericPolycone()
>> 78 {
>> 79 }
90 80
91 81
92 ////////////////////////////////////////////// 82 //////////////////////////////////////////////////////////////////////////
93 // 83 //
94 // Copy constructor 84 // Copy constructor
95 // 85 //
96 G4UGenericPolycone::G4UGenericPolycone(const G << 86 G4UGenericPolycone::G4UGenericPolycone(const G4UGenericPolycone &source)
97 : Base_t(source) << 87 : G4USolid(source)
98 { 88 {
99 wrStart = source.wrStart; <<
100 wrDelta = source.wrDelta; <<
101 rzcorners = source.rzcorners; <<
102 } 89 }
103 90
104 91
105 ////////////////////////////////////////////// 92 //////////////////////////////////////////////////////////////////////////
106 // 93 //
107 // Assignment operator 94 // Assignment operator
108 // 95 //
109 G4UGenericPolycone& 96 G4UGenericPolycone&
110 G4UGenericPolycone::operator=(const G4UGeneric << 97 G4UGenericPolycone::operator=(const G4UGenericPolycone &source)
111 { 98 {
112 if (this == &source) return *this; 99 if (this == &source) return *this;
113 << 100
114 Base_t::operator=( source ); << 101 G4USolid::operator=( source );
115 wrStart = source.wrStart; << 102
116 wrDelta = source.wrDelta; <<
117 rzcorners = source.rzcorners; <<
118 <<
119 return *this; 103 return *this;
120 } 104 }
121 105
122 G4double G4UGenericPolycone::GetStartPhi() con 106 G4double G4UGenericPolycone::GetStartPhi() const
123 { 107 {
124 return wrStart; << 108 return GetShape()->GetStartPhi();
125 } 109 }
126 G4double G4UGenericPolycone::GetEndPhi() const 110 G4double G4UGenericPolycone::GetEndPhi() const
127 { 111 {
128 return (wrStart + wrDelta); << 112 return GetShape()->GetEndPhi();
129 } 113 }
130 G4double G4UGenericPolycone::GetSinStartPhi() 114 G4double G4UGenericPolycone::GetSinStartPhi() const
131 { 115 {
132 if (IsOpen()) return 0.; << 116 if (!GetShape()->IsOpen()) return 0;
133 G4double phi = GetStartPhi(); << 117 G4double phi = GetShape()->GetStartPhi();
134 return std::sin(phi); 118 return std::sin(phi);
135 } 119 }
136 G4double G4UGenericPolycone::GetCosStartPhi() 120 G4double G4UGenericPolycone::GetCosStartPhi() const
137 { 121 {
138 if (IsOpen()) return 1.; << 122 if (!GetShape()->IsOpen()) return 1;
139 G4double phi = GetStartPhi(); << 123 G4double phi = GetShape()->GetStartPhi();
140 return std::cos(phi); 124 return std::cos(phi);
141 } 125 }
142 G4double G4UGenericPolycone::GetSinEndPhi() co 126 G4double G4UGenericPolycone::GetSinEndPhi() const
143 { 127 {
144 if (IsOpen()) return 0.; << 128 if (!GetShape()->IsOpen()) return 0;
145 G4double phi = GetEndPhi(); << 129 G4double phi = GetShape()->GetEndPhi();
146 return std::sin(phi); 130 return std::sin(phi);
147 } 131 }
148 G4double G4UGenericPolycone::GetCosEndPhi() co 132 G4double G4UGenericPolycone::GetCosEndPhi() const
149 { 133 {
150 if (IsOpen()) return 1.; << 134 if (!GetShape()->IsOpen()) return 1;
151 G4double phi = GetEndPhi(); << 135 G4double phi = GetShape()->GetEndPhi();
152 return std::cos(phi); 136 return std::cos(phi);
153 } 137 }
154 G4bool G4UGenericPolycone::IsOpen() const 138 G4bool G4UGenericPolycone::IsOpen() const
155 { 139 {
156 return (wrDelta < twopi); << 140 return GetShape()->IsOpen();
157 } 141 }
158 G4int G4UGenericPolycone::GetNumRZCorner() con 142 G4int G4UGenericPolycone::GetNumRZCorner() const
159 { 143 {
160 return rzcorners.size(); << 144 return GetShape()->GetNumRZCorner();
161 } 145 }
162 G4PolyconeSideRZ G4UGenericPolycone::GetCorner 146 G4PolyconeSideRZ G4UGenericPolycone::GetCorner(G4int index) const
163 { 147 {
164 G4TwoVector rz = rzcorners.at(index); << 148 UPolyconeSideRZ pside = GetShape()->GetCorner(index);
165 G4PolyconeSideRZ psiderz = { rz.x(), rz.y() << 149 G4PolyconeSideRZ psiderz = { pside.r, pside.z };
166 150
167 return psiderz; 151 return psiderz;
168 } 152 }
169 153
170 ////////////////////////////////////////////// 154 //////////////////////////////////////////////////////////////////////////
171 // 155 //
172 // Make a clone of the object <<
173 <<
174 G4VSolid* G4UGenericPolycone::Clone() const <<
175 { <<
176 return new G4UGenericPolycone(*this); <<
177 } <<
178 <<
179 ////////////////////////////////////////////// <<
180 // <<
181 // Get bounding box 156 // Get bounding box
182 157
183 void 158 void
184 G4UGenericPolycone::BoundingLimits(G4ThreeVect << 159 G4UGenericPolycone::Extent(G4ThreeVector& pMin, G4ThreeVector& pMax) const
185 G4ThreeVect <<
186 { 160 {
187 G4double rmin = kInfinity, rmax = -kInfinity 161 G4double rmin = kInfinity, rmax = -kInfinity;
188 G4double zmin = kInfinity, zmax = -kInfinity 162 G4double zmin = kInfinity, zmax = -kInfinity;
189 163
190 for (G4int i=0; i<GetNumRZCorner(); ++i) 164 for (G4int i=0; i<GetNumRZCorner(); ++i)
191 { 165 {
192 G4PolyconeSideRZ corner = GetCorner(i); 166 G4PolyconeSideRZ corner = GetCorner(i);
193 if (corner.r < rmin) rmin = corner.r; 167 if (corner.r < rmin) rmin = corner.r;
194 if (corner.r > rmax) rmax = corner.r; 168 if (corner.r > rmax) rmax = corner.r;
195 if (corner.z < zmin) zmin = corner.z; 169 if (corner.z < zmin) zmin = corner.z;
196 if (corner.z > zmax) zmax = corner.z; 170 if (corner.z > zmax) zmax = corner.z;
197 } 171 }
198 172
199 if (IsOpen()) 173 if (IsOpen())
200 { 174 {
201 G4TwoVector vmin,vmax; 175 G4TwoVector vmin,vmax;
202 G4GeomTools::DiskExtent(rmin,rmax, 176 G4GeomTools::DiskExtent(rmin,rmax,
203 GetSinStartPhi(),G 177 GetSinStartPhi(),GetCosStartPhi(),
204 GetSinEndPhi(),Get 178 GetSinEndPhi(),GetCosEndPhi(),
205 vmin,vmax); 179 vmin,vmax);
206 pMin.set(vmin.x(),vmin.y(),zmin); 180 pMin.set(vmin.x(),vmin.y(),zmin);
207 pMax.set(vmax.x(),vmax.y(),zmax); 181 pMax.set(vmax.x(),vmax.y(),zmax);
208 } 182 }
209 else 183 else
210 { 184 {
211 pMin.set(-rmax,-rmax, zmin); 185 pMin.set(-rmax,-rmax, zmin);
212 pMax.set( rmax, rmax, zmax); 186 pMax.set( rmax, rmax, zmax);
213 } 187 }
214 188
215 // Check correctness of the bounding box 189 // Check correctness of the bounding box
216 // 190 //
217 if (pMin.x() >= pMax.x() || pMin.y() >= pMax 191 if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
218 { 192 {
219 std::ostringstream message; 193 std::ostringstream message;
220 message << "Bad bounding box (min >= max) 194 message << "Bad bounding box (min >= max) for solid: "
221 << GetName() << " !" 195 << GetName() << " !"
222 << "\npMin = " << pMin 196 << "\npMin = " << pMin
223 << "\npMax = " << pMax; 197 << "\npMax = " << pMax;
224 G4Exception("G4UGenericPolycone::BoundingL << 198 G4Exception("G4UGenericPolycone::Extent()", "GeomMgt0001",
225 JustWarning, message); 199 JustWarning, message);
226 StreamInfo(G4cout); 200 StreamInfo(G4cout);
227 } 201 }
228 } 202 }
229 203
230 ////////////////////////////////////////////// 204 //////////////////////////////////////////////////////////////////////////
231 // 205 //
232 // Calculate extent under transform and specif 206 // Calculate extent under transform and specified limit
233 207
234 G4bool 208 G4bool
235 G4UGenericPolycone::CalculateExtent(const EAxi 209 G4UGenericPolycone::CalculateExtent(const EAxis pAxis,
236 const G4Vo 210 const G4VoxelLimits& pVoxelLimit,
237 const G4Af 211 const G4AffineTransform& pTransform,
238 G4do 212 G4double& pMin, G4double& pMax) const
239 { 213 {
240 G4ThreeVector bmin, bmax; 214 G4ThreeVector bmin, bmax;
241 G4bool exist; 215 G4bool exist;
242 216
243 // Check bounding box (bbox) 217 // Check bounding box (bbox)
244 // 218 //
245 BoundingLimits(bmin,bmax); << 219 Extent(bmin,bmax);
246 G4BoundingEnvelope bbox(bmin,bmax); 220 G4BoundingEnvelope bbox(bmin,bmax);
247 #ifdef G4BBOX_EXTENT 221 #ifdef G4BBOX_EXTENT
248 return bbox.CalculateExtent(pAxis,pVoxelLimi << 222 if (true) return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
249 #endif 223 #endif
250 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVox 224 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVoxelLimit,pTransform,pMin,pMax))
251 { 225 {
252 return exist = pMin < pMax; << 226 return exist = (pMin < pMax) ? true : false;
253 } 227 }
254 228
255 // To find the extent, RZ contour of the pol 229 // To find the extent, RZ contour of the polycone is subdivided
256 // in triangles. The extent is calculated as 230 // in triangles. The extent is calculated as cumulative extent of
257 // all sub-polycones formed by rotation of t 231 // all sub-polycones formed by rotation of triangles around Z
258 // 232 //
259 G4TwoVectorList contourRZ; 233 G4TwoVectorList contourRZ;
260 G4TwoVectorList triangles; 234 G4TwoVectorList triangles;
261 G4double eminlim = pVoxelLimit.GetMinExtent( 235 G4double eminlim = pVoxelLimit.GetMinExtent(pAxis);
262 G4double emaxlim = pVoxelLimit.GetMaxExtent( 236 G4double emaxlim = pVoxelLimit.GetMaxExtent(pAxis);
263 237
264 // get RZ contour, ensure anticlockwise orde 238 // get RZ contour, ensure anticlockwise order of corners
265 for (G4int i=0; i<GetNumRZCorner(); ++i) 239 for (G4int i=0; i<GetNumRZCorner(); ++i)
266 { 240 {
267 G4PolyconeSideRZ corner = GetCorner(i); 241 G4PolyconeSideRZ corner = GetCorner(i);
268 contourRZ.emplace_back(corner.r,corner.z); << 242 contourRZ.push_back(G4TwoVector(corner.r,corner.z));
269 } 243 }
270 G4double area = G4GeomTools::PolygonArea(con 244 G4double area = G4GeomTools::PolygonArea(contourRZ);
271 if (area < 0.) std::reverse(contourRZ.begin( 245 if (area < 0.) std::reverse(contourRZ.begin(),contourRZ.end());
272 246
273 // triangulate RZ countour 247 // triangulate RZ countour
274 if (!G4GeomTools::TriangulatePolygon(contour 248 if (!G4GeomTools::TriangulatePolygon(contourRZ,triangles))
275 { 249 {
276 std::ostringstream message; 250 std::ostringstream message;
277 message << "Triangulation of RZ contour ha 251 message << "Triangulation of RZ contour has failed for solid: "
278 << GetName() << " !" 252 << GetName() << " !"
279 << "\nExtent has been calculated u 253 << "\nExtent has been calculated using boundary box";
280 G4Exception("G4UGenericPolycone::Calculate 254 G4Exception("G4UGenericPolycone::CalculateExtent()",
281 "GeomMgt1002", JustWarning, me 255 "GeomMgt1002", JustWarning, message);
282 return bbox.CalculateExtent(pAxis,pVoxelLi 256 return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
283 } 257 }
284 258
285 // set trigonometric values 259 // set trigonometric values
286 const G4int NSTEPS = 24; // numbe 260 const G4int NSTEPS = 24; // number of steps for whole circle
287 G4double astep = twopi/NSTEPS; // max a << 261 G4double astep = (360/NSTEPS)*deg; // max angle for one step
288 262
289 G4double sphi = GetStartPhi(); 263 G4double sphi = GetStartPhi();
290 G4double ephi = GetEndPhi(); 264 G4double ephi = GetEndPhi();
291 G4double dphi = IsOpen() ? ephi-sphi : two 265 G4double dphi = IsOpen() ? ephi-sphi : twopi;
292 G4int ksteps = (dphi <= astep) ? 1 : (G4i 266 G4int ksteps = (dphi <= astep) ? 1 : (G4int)((dphi-deg)/astep) + 1;
293 G4double ang = dphi/ksteps; 267 G4double ang = dphi/ksteps;
294 268
295 G4double sinHalf = std::sin(0.5*ang); 269 G4double sinHalf = std::sin(0.5*ang);
296 G4double cosHalf = std::cos(0.5*ang); 270 G4double cosHalf = std::cos(0.5*ang);
297 G4double sinStep = 2.*sinHalf*cosHalf; 271 G4double sinStep = 2.*sinHalf*cosHalf;
298 G4double cosStep = 1. - 2.*sinHalf*sinHalf; 272 G4double cosStep = 1. - 2.*sinHalf*sinHalf;
299 273
300 G4double sinStart = GetSinStartPhi(); 274 G4double sinStart = GetSinStartPhi();
301 G4double cosStart = GetCosStartPhi(); 275 G4double cosStart = GetCosStartPhi();
302 G4double sinEnd = GetSinEndPhi(); 276 G4double sinEnd = GetSinEndPhi();
303 G4double cosEnd = GetCosEndPhi(); 277 G4double cosEnd = GetCosEndPhi();
304 278
305 // define vectors and arrays 279 // define vectors and arrays
306 std::vector<const G4ThreeVectorList *> polyg 280 std::vector<const G4ThreeVectorList *> polygons;
307 polygons.resize(ksteps+2); 281 polygons.resize(ksteps+2);
308 G4ThreeVectorList pols[NSTEPS+2]; 282 G4ThreeVectorList pols[NSTEPS+2];
309 for (G4int k=0; k<ksteps+2; ++k) pols[k].res 283 for (G4int k=0; k<ksteps+2; ++k) pols[k].resize(6);
310 for (G4int k=0; k<ksteps+2; ++k) polygons[k] 284 for (G4int k=0; k<ksteps+2; ++k) polygons[k] = &pols[k];
311 G4double r0[6],z0[6]; // contour with origin 285 G4double r0[6],z0[6]; // contour with original edges of triangle
312 G4double r1[6]; // shifted radii of ex 286 G4double r1[6]; // shifted radii of external edges of triangle
313 287
314 // main loop along triangles 288 // main loop along triangles
315 pMin = kInfinity; 289 pMin = kInfinity;
316 pMax =-kInfinity; 290 pMax =-kInfinity;
317 G4int ntria = triangles.size()/3; 291 G4int ntria = triangles.size()/3;
318 for (G4int i=0; i<ntria; ++i) 292 for (G4int i=0; i<ntria; ++i)
319 { 293 {
320 G4int i3 = i*3; 294 G4int i3 = i*3;
321 for (G4int k=0; k<3; ++k) 295 for (G4int k=0; k<3; ++k)
322 { 296 {
323 G4int e0 = i3+k, e1 = (k<2) ? e0+1 : i3; 297 G4int e0 = i3+k, e1 = (k<2) ? e0+1 : i3;
324 G4int k2 = k*2; 298 G4int k2 = k*2;
325 // set contour with original edges of tr 299 // set contour with original edges of triangle
326 r0[k2+0] = triangles[e0].x(); z0[k2+0] = 300 r0[k2+0] = triangles[e0].x(); z0[k2+0] = triangles[e0].y();
327 r0[k2+1] = triangles[e1].x(); z0[k2+1] = 301 r0[k2+1] = triangles[e1].x(); z0[k2+1] = triangles[e1].y();
328 // set shifted radii 302 // set shifted radii
329 r1[k2+0] = r0[k2+0]; 303 r1[k2+0] = r0[k2+0];
330 r1[k2+1] = r0[k2+1]; 304 r1[k2+1] = r0[k2+1];
331 if (z0[k2+1] - z0[k2+0] <= 0) continue; 305 if (z0[k2+1] - z0[k2+0] <= 0) continue;
332 r1[k2+0] /= cosHalf; 306 r1[k2+0] /= cosHalf;
333 r1[k2+1] /= cosHalf; 307 r1[k2+1] /= cosHalf;
334 } 308 }
335 309
336 // rotate countour, set sequence of 6-side 310 // rotate countour, set sequence of 6-sided polygons
337 G4double sinCur = sinStart*cosHalf + cosSt 311 G4double sinCur = sinStart*cosHalf + cosStart*sinHalf;
338 G4double cosCur = cosStart*cosHalf - sinSt 312 G4double cosCur = cosStart*cosHalf - sinStart*sinHalf;
339 for (G4int j=0; j<6; ++j) 313 for (G4int j=0; j<6; ++j)
340 { 314 {
341 pols[0][j].set(r0[j]*cosStart,r0[j]*sinS 315 pols[0][j].set(r0[j]*cosStart,r0[j]*sinStart,z0[j]);
342 } 316 }
343 for (G4int k=1; k<ksteps+1; ++k) 317 for (G4int k=1; k<ksteps+1; ++k)
344 { 318 {
345 for (G4int j=0; j<6; ++j) 319 for (G4int j=0; j<6; ++j)
346 { 320 {
347 pols[k][j].set(r1[j]*cosCur,r1[j]*sinC 321 pols[k][j].set(r1[j]*cosCur,r1[j]*sinCur,z0[j]);
348 } 322 }
349 G4double sinTmp = sinCur; 323 G4double sinTmp = sinCur;
350 sinCur = sinCur*cosStep + cosCur*sinStep 324 sinCur = sinCur*cosStep + cosCur*sinStep;
351 cosCur = cosCur*cosStep - sinTmp*sinStep 325 cosCur = cosCur*cosStep - sinTmp*sinStep;
352 } 326 }
353 for (G4int j=0; j<6; ++j) 327 for (G4int j=0; j<6; ++j)
354 { 328 {
355 pols[ksteps+1][j].set(r0[j]*cosEnd,r0[j] 329 pols[ksteps+1][j].set(r0[j]*cosEnd,r0[j]*sinEnd,z0[j]);
356 } 330 }
357 331
358 // set sub-envelope and adjust extent 332 // set sub-envelope and adjust extent
359 G4double emin,emax; 333 G4double emin,emax;
360 G4BoundingEnvelope benv(polygons); 334 G4BoundingEnvelope benv(polygons);
361 if (!benv.CalculateExtent(pAxis,pVoxelLimi 335 if (!benv.CalculateExtent(pAxis,pVoxelLimit,pTransform,emin,emax)) continue;
362 if (emin < pMin) pMin = emin; 336 if (emin < pMin) pMin = emin;
363 if (emax > pMax) pMax = emax; 337 if (emax > pMax) pMax = emax;
364 if (eminlim > pMin && emaxlim < pMax) retu 338 if (eminlim > pMin && emaxlim < pMax) return true; // max possible extent
365 } 339 }
366 return (pMin < pMax); 340 return (pMin < pMax);
367 } 341 }
368 342
369 ////////////////////////////////////////////// 343 ////////////////////////////////////////////////////////////////////////
370 // 344 //
371 // CreatePolyhedron 345 // CreatePolyhedron
372 346
373 G4Polyhedron* G4UGenericPolycone::CreatePolyhe 347 G4Polyhedron* G4UGenericPolycone::CreatePolyhedron() const
374 { 348 {
375 return new G4PolyhedronPcon(wrStart, wrDelta << 349
>> 350
>> 351 // The following code prepares for:
>> 352 // HepPolyhedron::createPolyhedron(int Nnodes, int Nfaces,
>> 353 // const double xyz[][3],
>> 354 // const int faces_vec[][4])
>> 355 // Here is an extract from the header file HepPolyhedron.h:
>> 356 /**
>> 357 * Creates user defined polyhedron.
>> 358 * This function allows to the user to define arbitrary polyhedron.
>> 359 * The faces of the polyhedron should be either triangles or planar
>> 360 * quadrilateral. Nodes of a face are defined by indexes pointing to
>> 361 * the elements in the xyz array. Numeration of the elements in the
>> 362 * array starts from 1 (like in fortran). The indexes can be positive
>> 363 * or negative. Negative sign means that the corresponding edge is
>> 364 * invisible. The normal of the face should be directed to exterior
>> 365 * of the polyhedron.
>> 366 *
>> 367 * @param Nnodes number of nodes
>> 368 * @param Nfaces number of faces
>> 369 * @param xyz nodes
>> 370 * @param faces_vec faces (quadrilaterals or triangles)
>> 371 * @return status of the operation - is non-zero in case of problem
>> 372 */
>> 373 const G4int numSide =
>> 374 G4int(G4Polyhedron::GetNumberOfRotationSteps()
>> 375 * (GetEndPhi() - GetStartPhi()) / twopi) + 1;
>> 376 G4int nNodes;
>> 377 G4int nFaces;
>> 378 typedef G4double double3[3];
>> 379 double3* xyz;
>> 380 typedef G4int int4[4];
>> 381 int4* faces_vec;
>> 382 if (IsOpen())
>> 383 {
>> 384 // Triangulate open ends. Simple ear-chopping algorithm...
>> 385 // I'm not sure how robust this algorithm is (J.Allison).
>> 386 //
>> 387 std::vector<G4bool> chopped(GetNumRZCorner(), false);
>> 388 std::vector<G4int*> triQuads;
>> 389 G4int remaining = GetNumRZCorner();
>> 390 G4int iStarter = 0;
>> 391 while (remaining >= 3) // Loop checking, 13.08.2015, G.Cosmo
>> 392 {
>> 393 // Find unchopped corners...
>> 394 //
>> 395 G4int A = -1, B = -1, C = -1;
>> 396 G4int iStepper = iStarter;
>> 397 do // Loop checking, 13.08.2015, G.Cosmo
>> 398 {
>> 399 if (A < 0) { A = iStepper; }
>> 400 else if (B < 0) { B = iStepper; }
>> 401 else if (C < 0) { C = iStepper; }
>> 402 do // Loop checking, 13.08.2015, G.Cosmo
>> 403 {
>> 404 if (++iStepper >= GetNumRZCorner()) { iStepper = 0; }
>> 405 }
>> 406 while (chopped[iStepper]);
>> 407 }
>> 408 while (C < 0 && iStepper != iStarter);
>> 409
>> 410 // Check triangle at B is pointing outward (an "ear").
>> 411 // Sign of z cross product determines...
>> 412 //
>> 413 G4double BAr = GetCorner(A).r - GetCorner(B).r;
>> 414 G4double BAz = GetCorner(A).z - GetCorner(B).z;
>> 415 G4double BCr = GetCorner(C).r - GetCorner(B).r;
>> 416 G4double BCz = GetCorner(C).z - GetCorner(B).z;
>> 417 if (BAr * BCz - BAz * BCr < kCarTolerance)
>> 418 {
>> 419 G4int* tq = new G4int[3];
>> 420 tq[0] = A + 1;
>> 421 tq[1] = B + 1;
>> 422 tq[2] = C + 1;
>> 423 triQuads.push_back(tq);
>> 424 chopped[B] = true;
>> 425 --remaining;
>> 426 }
>> 427 else
>> 428 {
>> 429 do // Loop checking, 13.08.2015, G.Cosmo
>> 430 {
>> 431 if (++iStarter >= GetNumRZCorner()) { iStarter = 0; }
>> 432 }
>> 433 while (chopped[iStarter]);
>> 434 }
>> 435 }
>> 436 // Transfer to faces...
>> 437 //
>> 438 nNodes = (numSide + 1) * GetNumRZCorner();
>> 439 nFaces = numSide * GetNumRZCorner() + 2 * triQuads.size();
>> 440 faces_vec = new int4[nFaces];
>> 441 G4int iface = 0;
>> 442 G4int addition = GetNumRZCorner() * numSide;
>> 443 G4int d = GetNumRZCorner() - 1;
>> 444 for (G4int iEnd = 0; iEnd < 2; ++iEnd)
>> 445 {
>> 446 for (size_t i = 0; i < triQuads.size(); ++i)
>> 447 {
>> 448 // Negative for soft/auxiliary/normally invisible edges...
>> 449 //
>> 450 G4int a, b, c;
>> 451 if (iEnd == 0)
>> 452 {
>> 453 a = triQuads[i][0];
>> 454 b = triQuads[i][1];
>> 455 c = triQuads[i][2];
>> 456 }
>> 457 else
>> 458 {
>> 459 a = triQuads[i][0] + addition;
>> 460 b = triQuads[i][2] + addition;
>> 461 c = triQuads[i][1] + addition;
>> 462 }
>> 463 G4int ab = std::abs(b - a);
>> 464 G4int bc = std::abs(c - b);
>> 465 G4int ca = std::abs(a - c);
>> 466 faces_vec[iface][0] = (ab == 1 || ab == d)? a: -a;
>> 467 faces_vec[iface][1] = (bc == 1 || bc == d)? b: -b;
>> 468 faces_vec[iface][2] = (ca == 1 || ca == d)? c: -c;
>> 469 faces_vec[iface][3] = 0;
>> 470 ++iface;
>> 471 }
>> 472 }
>> 473
>> 474 // Continue with sides...
>> 475
>> 476 xyz = new double3[nNodes];
>> 477 const G4double dPhi = (GetEndPhi() - GetStartPhi()) / numSide;
>> 478 G4double phi = GetStartPhi();
>> 479 G4int ixyz = 0;
>> 480 for (G4int iSide = 0; iSide < numSide; ++iSide)
>> 481 {
>> 482 for (G4int iCorner = 0; iCorner < GetNumRZCorner(); ++iCorner)
>> 483 {
>> 484 xyz[ixyz][0] = GetCorner(iCorner).r * std::cos(phi);
>> 485 xyz[ixyz][1] = GetCorner(iCorner).r * std::sin(phi);
>> 486 xyz[ixyz][2] = GetCorner(iCorner).z;
>> 487 if (iSide == 0) // startPhi
>> 488 {
>> 489 if (iCorner < GetNumRZCorner() - 1)
>> 490 {
>> 491 faces_vec[iface][0] = ixyz + 1;
>> 492 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() + 1);
>> 493 faces_vec[iface][2] = ixyz + GetNumRZCorner() + 2;
>> 494 faces_vec[iface][3] = ixyz + 2;
>> 495 }
>> 496 else
>> 497 {
>> 498 faces_vec[iface][0] = ixyz + 1;
>> 499 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() + 1);
>> 500 faces_vec[iface][2] = ixyz + 2;
>> 501 faces_vec[iface][3] = ixyz - GetNumRZCorner() + 2;
>> 502 }
>> 503 }
>> 504 else if (iSide == numSide - 1) // endPhi
>> 505 {
>> 506 if (iCorner < GetNumRZCorner() - 1)
>> 507 {
>> 508 faces_vec[iface][0] = ixyz + 1;
>> 509 faces_vec[iface][1] = ixyz + GetNumRZCorner() + 1;
>> 510 faces_vec[iface][2] = ixyz + GetNumRZCorner() + 2;
>> 511 faces_vec[iface][3] = -(ixyz + 2);
>> 512 }
>> 513 else
>> 514 {
>> 515 faces_vec[iface][0] = ixyz + 1;
>> 516 faces_vec[iface][1] = ixyz + GetNumRZCorner() + 1;
>> 517 faces_vec[iface][2] = ixyz + 2;
>> 518 faces_vec[iface][3] = -(ixyz - GetNumRZCorner() + 2);
>> 519 }
>> 520 }
>> 521 else
>> 522 {
>> 523 if (iCorner < GetNumRZCorner() - 1)
>> 524 {
>> 525 faces_vec[iface][0] = ixyz + 1;
>> 526 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() + 1);
>> 527 faces_vec[iface][2] = ixyz + GetNumRZCorner() + 2;
>> 528 faces_vec[iface][3] = -(ixyz + 2);
>> 529 }
>> 530 else
>> 531 {
>> 532 faces_vec[iface][0] = ixyz + 1;
>> 533 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() + 1);
>> 534 faces_vec[iface][2] = ixyz + 2;
>> 535 faces_vec[iface][3] = -(ixyz - GetNumRZCorner() + 2);
>> 536 }
>> 537 }
>> 538 ++iface;
>> 539 ++ixyz;
>> 540 }
>> 541 phi += dPhi;
>> 542 }
>> 543
>> 544 // Last corners...
>> 545
>> 546 for (G4int iCorner = 0; iCorner < GetNumRZCorner(); ++iCorner)
>> 547 {
>> 548 xyz[ixyz][0] = GetCorner(iCorner).r * std::cos(phi);
>> 549 xyz[ixyz][1] = GetCorner(iCorner).r * std::sin(phi);
>> 550 xyz[ixyz][2] = GetCorner(iCorner).z;
>> 551 ++ixyz;
>> 552 }
>> 553 }
>> 554 else // !phiIsOpen - i.e., a complete 360 degrees.
>> 555 {
>> 556 nNodes = numSide * GetNumRZCorner();
>> 557 nFaces = numSide * GetNumRZCorner();;
>> 558 xyz = new double3[nNodes];
>> 559 faces_vec = new int4[nFaces];
>> 560 const G4double dPhi = (GetEndPhi() - GetStartPhi()) / numSide;
>> 561 G4double phi = GetStartPhi();
>> 562 G4int ixyz = 0, iface = 0;
>> 563 for (G4int iSide = 0; iSide < numSide; ++iSide)
>> 564 {
>> 565 for (G4int iCorner = 0; iCorner < GetNumRZCorner(); ++iCorner)
>> 566 {
>> 567 xyz[ixyz][0] = GetCorner(iCorner).r * std::cos(phi);
>> 568 xyz[ixyz][1] = GetCorner(iCorner).r * std::sin(phi);
>> 569 xyz[ixyz][2] = GetCorner(iCorner).z;
>> 570
>> 571 if (iSide < numSide - 1)
>> 572 {
>> 573 if (iCorner < GetNumRZCorner() - 1)
>> 574 {
>> 575 faces_vec[iface][0] = ixyz + 1;
>> 576 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() + 1);
>> 577 faces_vec[iface][2] = ixyz + GetNumRZCorner() + 2;
>> 578 faces_vec[iface][3] = -(ixyz + 2);
>> 579 }
>> 580 else
>> 581 {
>> 582 faces_vec[iface][0] = ixyz + 1;
>> 583 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() + 1);
>> 584 faces_vec[iface][2] = ixyz + 2;
>> 585 faces_vec[iface][3] = -(ixyz - GetNumRZCorner() + 2);
>> 586 }
>> 587 }
>> 588 else // Last side joins ends...
>> 589 {
>> 590 if (iCorner < GetNumRZCorner() - 1)
>> 591 {
>> 592 faces_vec[iface][0] = ixyz + 1;
>> 593 faces_vec[iface][1] = -(ixyz + GetNumRZCorner() - nFaces + 1);
>> 594 faces_vec[iface][2] = ixyz + GetNumRZCorner() - nFaces + 2;
>> 595 faces_vec[iface][3] = -(ixyz + 2);
>> 596 }
>> 597 else
>> 598 {
>> 599 faces_vec[iface][0] = ixyz + 1;
>> 600 faces_vec[iface][1] = -(ixyz - nFaces + GetNumRZCorner() + 1);
>> 601 faces_vec[iface][2] = ixyz - nFaces + 2;
>> 602 faces_vec[iface][3] = -(ixyz - GetNumRZCorner() + 2);
>> 603 }
>> 604 }
>> 605 ++ixyz;
>> 606 ++iface;
>> 607 }
>> 608 phi += dPhi;
>> 609 }
>> 610 }
>> 611 G4Polyhedron* polyhedron = new G4Polyhedron;
>> 612 G4int prob = polyhedron->createPolyhedron(nNodes, nFaces, xyz, faces_vec);
>> 613 delete [] faces_vec;
>> 614 delete [] xyz;
>> 615 if (prob)
>> 616 {
>> 617 std::ostringstream message;
>> 618 message << "Problem creating G4Polyhedron for: " << GetName();
>> 619 G4Exception("G4GenericPolycone::CreatePolyhedron()", "GeomSolids1002",
>> 620 JustWarning, message);
>> 621 delete polyhedron;
>> 622 return 0;
>> 623 }
>> 624 else
>> 625 {
>> 626 return polyhedron;
>> 627 }
376 } 628 }
377 629
378 #endif // G4GEOM_USE_USOLIDS 630 #endif // G4GEOM_USE_USOLIDS
379 631