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25 // 25 //
26 // Implementation for G4Trd class 26 // Implementation for G4Trd class
27 // 27 //
28 // 12.01.95 P.Kent: First version 28 // 12.01.95 P.Kent: First version
29 // 28.04.05 V.Grichine: new SurfaceNormal acco << 29 // 28.04.05 V.Grichine: new SurfaceNormal according to J.Apostolakis proposal
30 // 25.05.17 E.Tcherniaev: complete revision, s 30 // 25.05.17 E.Tcherniaev: complete revision, speed-up
31 // ------------------------------------------- 31 // --------------------------------------------------------------------
32 32
33 #include "G4Trd.hh" 33 #include "G4Trd.hh"
34 34
35 #if !defined(G4GEOM_USE_UTRD) 35 #if !defined(G4GEOM_USE_UTRD)
36 36
37 #include "G4GeomTools.hh" 37 #include "G4GeomTools.hh"
38 38
39 #include "G4VoxelLimits.hh" 39 #include "G4VoxelLimits.hh"
40 #include "G4AffineTransform.hh" 40 #include "G4AffineTransform.hh"
41 #include "G4BoundingEnvelope.hh" 41 #include "G4BoundingEnvelope.hh"
42 #include "G4QuickRand.hh" << 42 #include "Randomize.hh"
43 43
44 #include "G4VPVParameterisation.hh" 44 #include "G4VPVParameterisation.hh"
45 45
46 #include "G4VGraphicsScene.hh" 46 #include "G4VGraphicsScene.hh"
47 47
48 using namespace CLHEP; 48 using namespace CLHEP;
49 49
50 ////////////////////////////////////////////// 50 //////////////////////////////////////////////////////////////////////////
51 // 51 //
52 // Constructor - set & check half widths 52 // Constructor - set & check half widths
53 53
54 G4Trd::G4Trd(const G4String& pName, 54 G4Trd::G4Trd(const G4String& pName,
55 G4double pdx1, G4double pdx 55 G4double pdx1, G4double pdx2,
56 G4double pdy1, G4double pdy 56 G4double pdy1, G4double pdy2,
57 G4double pdz) 57 G4double pdz)
58 : G4CSGSolid(pName), halfCarTolerance(0.5*kC 58 : G4CSGSolid(pName), halfCarTolerance(0.5*kCarTolerance),
59 fDx1(pdx1), fDx2(pdx2), fDy1(pdy1), fDy2(p 59 fDx1(pdx1), fDx2(pdx2), fDy1(pdy1), fDy2(pdy2), fDz(pdz)
60 { 60 {
61 CheckParameters(); 61 CheckParameters();
62 MakePlanes(); 62 MakePlanes();
63 } 63 }
64 64
65 ////////////////////////////////////////////// 65 //////////////////////////////////////////////////////////////////////////
66 // 66 //
67 // Fake default constructor - sets only member 67 // Fake default constructor - sets only member data and allocates memory
68 // for usage restri 68 // for usage restricted to object persistency
69 // 69 //
70 G4Trd::G4Trd( __void__& a ) 70 G4Trd::G4Trd( __void__& a )
71 : G4CSGSolid(a), halfCarTolerance(0.5*kCarTo 71 : G4CSGSolid(a), halfCarTolerance(0.5*kCarTolerance),
72 fDx1(1.), fDx2(1.), fDy1(1.), fDy2(1.), fD 72 fDx1(1.), fDx2(1.), fDy1(1.), fDy2(1.), fDz(1.)
73 { 73 {
74 MakePlanes(); 74 MakePlanes();
75 } 75 }
76 76
77 ////////////////////////////////////////////// 77 //////////////////////////////////////////////////////////////////////////
78 // 78 //
79 // Destructor 79 // Destructor
80 80
81 G4Trd::~G4Trd() = default; << 81 G4Trd::~G4Trd()
>> 82 {
>> 83 }
82 84
83 ////////////////////////////////////////////// 85 //////////////////////////////////////////////////////////////////////////
84 // 86 //
85 // Copy constructor 87 // Copy constructor
86 88
87 G4Trd::G4Trd(const G4Trd& rhs) 89 G4Trd::G4Trd(const G4Trd& rhs)
88 : G4CSGSolid(rhs), halfCarTolerance(rhs.half 90 : G4CSGSolid(rhs), halfCarTolerance(rhs.halfCarTolerance),
89 fDx1(rhs.fDx1), fDx2(rhs.fDx2), 91 fDx1(rhs.fDx1), fDx2(rhs.fDx2),
90 fDy1(rhs.fDy1), fDy2(rhs.fDy2), fDz(rhs.fD << 92 fDy1(rhs.fDy1), fDy2(rhs.fDy2), fDz(rhs.fDz)
91 fHx(rhs.fHx), fHy(rhs.fHy) <<
92 { 93 {
93 for (G4int i=0; i<4; ++i) { fPlanes[i] = rhs 94 for (G4int i=0; i<4; ++i) { fPlanes[i] = rhs.fPlanes[i]; }
94 } 95 }
95 96
96 ////////////////////////////////////////////// 97 //////////////////////////////////////////////////////////////////////////
97 // 98 //
98 // Assignment operator 99 // Assignment operator
99 100
100 G4Trd& G4Trd::operator = (const G4Trd& rhs) 101 G4Trd& G4Trd::operator = (const G4Trd& rhs)
101 { 102 {
102 // Check assignment to self 103 // Check assignment to self
103 // 104 //
104 if (this == &rhs) { return *this; } 105 if (this == &rhs) { return *this; }
105 106
106 // Copy base class data 107 // Copy base class data
107 // 108 //
108 G4CSGSolid::operator=(rhs); 109 G4CSGSolid::operator=(rhs);
109 110
110 // Copy data 111 // Copy data
111 // 112 //
112 halfCarTolerance = rhs.halfCarTolerance; 113 halfCarTolerance = rhs.halfCarTolerance;
113 fDx1 = rhs.fDx1; fDx2 = rhs.fDx2; 114 fDx1 = rhs.fDx1; fDx2 = rhs.fDx2;
114 fDy1 = rhs.fDy1; fDy2 = rhs.fDy2; 115 fDy1 = rhs.fDy1; fDy2 = rhs.fDy2;
115 fDz = rhs.fDz; 116 fDz = rhs.fDz;
116 fHx = rhs.fHx; fHy = rhs.fHy; <<
117 for (G4int i=0; i<4; ++i) { fPlanes[i] = rh 117 for (G4int i=0; i<4; ++i) { fPlanes[i] = rhs.fPlanes[i]; }
118 118
119 return *this; 119 return *this;
120 } 120 }
121 121
122 ////////////////////////////////////////////// 122 //////////////////////////////////////////////////////////////////////////
123 // 123 //
124 // Set all parameters, as for constructor - se 124 // Set all parameters, as for constructor - set and check half-widths
125 125
126 void G4Trd::SetAllParameters(G4double pdx1, G4 126 void G4Trd::SetAllParameters(G4double pdx1, G4double pdx2,
127 G4double pdy1, G4 127 G4double pdy1, G4double pdy2, G4double pdz)
128 { 128 {
129 // Reset data of the base class 129 // Reset data of the base class
130 fCubicVolume = 0.; 130 fCubicVolume = 0.;
131 fSurfaceArea = 0.; 131 fSurfaceArea = 0.;
132 fRebuildPolyhedron = true; 132 fRebuildPolyhedron = true;
133 133
134 // Set parameters 134 // Set parameters
135 fDx1 = pdx1; fDx2 = pdx2; 135 fDx1 = pdx1; fDx2 = pdx2;
136 fDy1 = pdy1; fDy2 = pdy2; 136 fDy1 = pdy1; fDy2 = pdy2;
137 fDz = pdz; 137 fDz = pdz;
138 138
139 CheckParameters(); 139 CheckParameters();
140 MakePlanes(); 140 MakePlanes();
141 } 141 }
142 142
143 ////////////////////////////////////////////// 143 //////////////////////////////////////////////////////////////////////////
144 // 144 //
145 // Check dimensions 145 // Check dimensions
146 146
147 void G4Trd::CheckParameters() 147 void G4Trd::CheckParameters()
148 { 148 {
149 G4double dmin = 2*kCarTolerance; 149 G4double dmin = 2*kCarTolerance;
150 if ((fDx1 < 0 || fDx2 < 0 || fDy1 < 0 || fDy 150 if ((fDx1 < 0 || fDx2 < 0 || fDy1 < 0 || fDy2 < 0 || fDz < dmin) ||
151 (fDx1 < dmin && fDx2 < dmin) || 151 (fDx1 < dmin && fDx2 < dmin) ||
152 (fDy1 < dmin && fDy2 < dmin)) 152 (fDy1 < dmin && fDy2 < dmin))
153 { 153 {
154 std::ostringstream message; 154 std::ostringstream message;
155 message << "Invalid (too small or negative 155 message << "Invalid (too small or negative) dimensions for Solid: "
156 << GetName() 156 << GetName()
157 << "\n X - " << fDx1 << ", " << f 157 << "\n X - " << fDx1 << ", " << fDx2
158 << "\n Y - " << fDy1 << ", " << f 158 << "\n Y - " << fDy1 << ", " << fDy2
159 << "\n Z - " << fDz; 159 << "\n Z - " << fDz;
160 G4Exception("G4Trd::CheckParameters()", "G 160 G4Exception("G4Trd::CheckParameters()", "GeomSolids0002",
161 FatalException, message); 161 FatalException, message);
162 } 162 }
163 } 163 }
164 164
165 ////////////////////////////////////////////// 165 //////////////////////////////////////////////////////////////////////////
166 // 166 //
167 // Set side planes 167 // Set side planes
168 168
169 void G4Trd::MakePlanes() 169 void G4Trd::MakePlanes()
170 { 170 {
171 G4double dx = fDx1 - fDx2; 171 G4double dx = fDx1 - fDx2;
172 G4double dy = fDy1 - fDy2; 172 G4double dy = fDy1 - fDy2;
173 G4double dz = 2*fDz; 173 G4double dz = 2*fDz;
174 fHx = std::sqrt(dy*dy + dz*dz); << 174 G4double magx = std::sqrt(dx*dx + dz*dz);
175 fHy = std::sqrt(dx*dx + dz*dz); << 175 G4double magy = std::sqrt(dy*dy + dz*dz);
176 176
177 // Set X planes at -Y & +Y << 177 // Set -Y & +Y planes
178 // 178 //
179 fPlanes[0].a = 0.; 179 fPlanes[0].a = 0.;
180 fPlanes[0].b = -dz/fHx; << 180 fPlanes[0].b = -dz/magy;
181 fPlanes[0].c = dy/fHx; << 181 fPlanes[0].c = dy/magy;
182 fPlanes[0].d = fPlanes[0].b*fDy1 + fPlanes[0 182 fPlanes[0].d = fPlanes[0].b*fDy1 + fPlanes[0].c*fDz;
183 183
184 fPlanes[1].a = fPlanes[0].a; 184 fPlanes[1].a = fPlanes[0].a;
185 fPlanes[1].b = -fPlanes[0].b; 185 fPlanes[1].b = -fPlanes[0].b;
186 fPlanes[1].c = fPlanes[0].c; 186 fPlanes[1].c = fPlanes[0].c;
187 fPlanes[1].d = fPlanes[0].d; 187 fPlanes[1].d = fPlanes[0].d;
188 188
189 // Set Y planes at -X & +X << 189 // Set -X & +X planes
190 // 190 //
191 fPlanes[2].a = -dz/fHy; << 191 fPlanes[2].a = -dz/magx;
192 fPlanes[2].b = 0.; 192 fPlanes[2].b = 0.;
193 fPlanes[2].c = dx/fHy; << 193 fPlanes[2].c = dx/magx;
194 fPlanes[2].d = fPlanes[2].a*fDx1 + fPlanes[2 194 fPlanes[2].d = fPlanes[2].a*fDx1 + fPlanes[2].c*fDz;
195 195
196 fPlanes[3].a = -fPlanes[2].a; 196 fPlanes[3].a = -fPlanes[2].a;
197 fPlanes[3].b = fPlanes[2].b; 197 fPlanes[3].b = fPlanes[2].b;
198 fPlanes[3].c = fPlanes[2].c; 198 fPlanes[3].c = fPlanes[2].c;
199 fPlanes[3].d = fPlanes[2].d; 199 fPlanes[3].d = fPlanes[2].d;
200 } 200 }
201 201
202 ////////////////////////////////////////////// 202 //////////////////////////////////////////////////////////////////////////
203 // 203 //
204 // Get volume 204 // Get volume
205 205
206 G4double G4Trd::GetCubicVolume() 206 G4double G4Trd::GetCubicVolume()
207 { 207 {
208 if (fCubicVolume == 0.) 208 if (fCubicVolume == 0.)
209 { 209 {
210 fCubicVolume = 2*fDz*( (fDx1+fDx2)*(fDy1+f 210 fCubicVolume = 2*fDz*( (fDx1+fDx2)*(fDy1+fDy2) +
211 (fDx2-fDx1)*(fDy2-f 211 (fDx2-fDx1)*(fDy2-fDy1)/3 );
212 } 212 }
213 return fCubicVolume; 213 return fCubicVolume;
214 } 214 }
215 215
216 ////////////////////////////////////////////// 216 //////////////////////////////////////////////////////////////////////////
217 // 217 //
218 // Get surface area 218 // Get surface area
219 219
220 G4double G4Trd::GetSurfaceArea() 220 G4double G4Trd::GetSurfaceArea()
221 { 221 {
222 if (fSurfaceArea == 0.) 222 if (fSurfaceArea == 0.)
223 { 223 {
224 fSurfaceArea = 224 fSurfaceArea =
225 4*(fDx1*fDy1 + fDx2*fDy2) + 2*(fDx1+fDx2 << 225 4*(fDx1*fDy1+fDx2*fDy2) +
>> 226 2*(fDy1+fDy2)*std::hypot(fDx1-fDx2,2*fDz) +
>> 227 2*(fDx1+fDx2)*std::hypot(fDy1-fDy2,2*fDz);
226 } 228 }
227 return fSurfaceArea; 229 return fSurfaceArea;
228 } 230 }
229 231
230 ////////////////////////////////////////////// 232 //////////////////////////////////////////////////////////////////////////
231 // 233 //
232 // Dispatch to parameterisation for replicatio 234 // Dispatch to parameterisation for replication mechanism dimension
233 // computation & modification 235 // computation & modification
234 236
235 void G4Trd::ComputeDimensions( G4VPVPara 237 void G4Trd::ComputeDimensions( G4VPVParameterisation* p,
236 const G4int n, 238 const G4int n,
237 const G4VPhysic 239 const G4VPhysicalVolume* pRep )
238 { 240 {
239 p->ComputeDimensions(*this,n,pRep); 241 p->ComputeDimensions(*this,n,pRep);
240 } 242 }
241 243
242 ////////////////////////////////////////////// 244 //////////////////////////////////////////////////////////////////////////
243 // 245 //
244 // Get bounding box 246 // Get bounding box
245 247
246 void G4Trd::BoundingLimits(G4ThreeVector& pMin 248 void G4Trd::BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const
247 { 249 {
248 G4double dx1 = GetXHalfLength1(); 250 G4double dx1 = GetXHalfLength1();
249 G4double dx2 = GetXHalfLength2(); 251 G4double dx2 = GetXHalfLength2();
250 G4double dy1 = GetYHalfLength1(); 252 G4double dy1 = GetYHalfLength1();
251 G4double dy2 = GetYHalfLength2(); 253 G4double dy2 = GetYHalfLength2();
252 G4double dz = GetZHalfLength(); 254 G4double dz = GetZHalfLength();
253 255
254 G4double xmax = std::max(dx1,dx2); 256 G4double xmax = std::max(dx1,dx2);
255 G4double ymax = std::max(dy1,dy2); 257 G4double ymax = std::max(dy1,dy2);
256 pMin.set(-xmax,-ymax,-dz); 258 pMin.set(-xmax,-ymax,-dz);
257 pMax.set( xmax, ymax, dz); 259 pMax.set( xmax, ymax, dz);
258 260
259 // Check correctness of the bounding box 261 // Check correctness of the bounding box
260 // 262 //
261 if (pMin.x() >= pMax.x() || pMin.y() >= pMax 263 if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
262 { 264 {
263 std::ostringstream message; 265 std::ostringstream message;
264 message << "Bad bounding box (min >= max) 266 message << "Bad bounding box (min >= max) for solid: "
265 << GetName() << " !" 267 << GetName() << " !"
266 << "\npMin = " << pMin 268 << "\npMin = " << pMin
267 << "\npMax = " << pMax; 269 << "\npMax = " << pMax;
268 G4Exception("G4Trd::BoundingLimits()", "Ge 270 G4Exception("G4Trd::BoundingLimits()", "GeomMgt0001", JustWarning, message);
269 DumpInfo(); 271 DumpInfo();
270 } 272 }
271 } 273 }
272 274
273 ////////////////////////////////////////////// 275 //////////////////////////////////////////////////////////////////////////
274 // 276 //
275 // Calculate extent under transform and specif 277 // Calculate extent under transform and specified limit
276 278
277 G4bool G4Trd::CalculateExtent( const EAxis pAx 279 G4bool G4Trd::CalculateExtent( const EAxis pAxis,
278 const G4VoxelLi 280 const G4VoxelLimits& pVoxelLimit,
279 const G4AffineT 281 const G4AffineTransform& pTransform,
280 G4double& 282 G4double& pMin, G4double& pMax ) const
281 { 283 {
282 G4ThreeVector bmin, bmax; 284 G4ThreeVector bmin, bmax;
283 G4bool exist; 285 G4bool exist;
284 286
285 // Check bounding box (bbox) 287 // Check bounding box (bbox)
286 // 288 //
287 BoundingLimits(bmin,bmax); 289 BoundingLimits(bmin,bmax);
288 G4BoundingEnvelope bbox(bmin,bmax); 290 G4BoundingEnvelope bbox(bmin,bmax);
289 #ifdef G4BBOX_EXTENT 291 #ifdef G4BBOX_EXTENT
290 return bbox.CalculateExtent(pAxis,pVoxelLimi 292 return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
291 #endif 293 #endif
292 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVox 294 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVoxelLimit,pTransform,pMin,pMax))
293 { 295 {
294 return exist = pMin < pMax; << 296 return exist = (pMin < pMax) ? true : false;
295 } 297 }
296 298
297 // Set bounding envelope (benv) and calculat 299 // Set bounding envelope (benv) and calculate extent
298 // 300 //
299 G4double dx1 = GetXHalfLength1(); 301 G4double dx1 = GetXHalfLength1();
300 G4double dx2 = GetXHalfLength2(); 302 G4double dx2 = GetXHalfLength2();
301 G4double dy1 = GetYHalfLength1(); 303 G4double dy1 = GetYHalfLength1();
302 G4double dy2 = GetYHalfLength2(); 304 G4double dy2 = GetYHalfLength2();
303 G4double dz = GetZHalfLength(); 305 G4double dz = GetZHalfLength();
304 306
305 G4ThreeVectorList baseA(4), baseB(4); 307 G4ThreeVectorList baseA(4), baseB(4);
306 baseA[0].set(-dx1,-dy1,-dz); 308 baseA[0].set(-dx1,-dy1,-dz);
307 baseA[1].set( dx1,-dy1,-dz); 309 baseA[1].set( dx1,-dy1,-dz);
308 baseA[2].set( dx1, dy1,-dz); 310 baseA[2].set( dx1, dy1,-dz);
309 baseA[3].set(-dx1, dy1,-dz); 311 baseA[3].set(-dx1, dy1,-dz);
310 baseB[0].set(-dx2,-dy2, dz); 312 baseB[0].set(-dx2,-dy2, dz);
311 baseB[1].set( dx2,-dy2, dz); 313 baseB[1].set( dx2,-dy2, dz);
312 baseB[2].set( dx2, dy2, dz); 314 baseB[2].set( dx2, dy2, dz);
313 baseB[3].set(-dx2, dy2, dz); 315 baseB[3].set(-dx2, dy2, dz);
314 316
315 std::vector<const G4ThreeVectorList *> polyg 317 std::vector<const G4ThreeVectorList *> polygons(2);
316 polygons[0] = &baseA; 318 polygons[0] = &baseA;
317 polygons[1] = &baseB; 319 polygons[1] = &baseB;
318 320
319 G4BoundingEnvelope benv(bmin,bmax,polygons); 321 G4BoundingEnvelope benv(bmin,bmax,polygons);
320 exist = benv.CalculateExtent(pAxis,pVoxelLim 322 exist = benv.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
321 return exist; 323 return exist;
322 } 324 }
323 325
324 ////////////////////////////////////////////// 326 //////////////////////////////////////////////////////////////////////////
325 // 327 //
326 // Return whether point inside/outside/on surf 328 // Return whether point inside/outside/on surface, using tolerance
327 329
328 EInside G4Trd::Inside( const G4ThreeVector& p 330 EInside G4Trd::Inside( const G4ThreeVector& p ) const
329 { << 331 {
330 G4double dx = fPlanes[3].a*std::abs(p.x())+f 332 G4double dx = fPlanes[3].a*std::abs(p.x())+fPlanes[3].c*p.z()+fPlanes[3].d;
331 G4double dy = fPlanes[1].b*std::abs(p.y())+f 333 G4double dy = fPlanes[1].b*std::abs(p.y())+fPlanes[1].c*p.z()+fPlanes[1].d;
332 G4double dxy = std::max(dx,dy); 334 G4double dxy = std::max(dx,dy);
333 335
334 G4double dz = std::abs(p.z())-fDz; 336 G4double dz = std::abs(p.z())-fDz;
335 G4double dist = std::max(dz,dxy); 337 G4double dist = std::max(dz,dxy);
336 338
337 return (dist > halfCarTolerance) ? kOutside << 339 if (dist > halfCarTolerance) return kOutside;
338 ((dist > -halfCarTolerance) ? kSurface : k << 340 return (dist > -halfCarTolerance) ? kSurface : kInside;
339 } 341 }
340 342
341 ////////////////////////////////////////////// 343 //////////////////////////////////////////////////////////////////////////
342 // 344 //
343 // Determine side where point is, and return c 345 // Determine side where point is, and return corresponding normal
344 346
345 G4ThreeVector G4Trd::SurfaceNormal( const G4Th 347 G4ThreeVector G4Trd::SurfaceNormal( const G4ThreeVector& p ) const
346 { 348 {
347 G4int nsurf = 0; // number of surfaces where 349 G4int nsurf = 0; // number of surfaces where p is placed
348 350
349 // Check Z faces 351 // Check Z faces
350 // 352 //
351 G4double nz = 0; 353 G4double nz = 0;
352 G4double dz = std::abs(p.z()) - fDz; 354 G4double dz = std::abs(p.z()) - fDz;
353 if (std::abs(dz) <= halfCarTolerance) 355 if (std::abs(dz) <= halfCarTolerance)
354 { 356 {
355 nz = (p.z() < 0) ? -1 : 1; 357 nz = (p.z() < 0) ? -1 : 1;
356 ++nsurf; 358 ++nsurf;
357 } 359 }
358 360
359 // Check Y faces 361 // Check Y faces
360 // 362 //
361 G4double ny = 0; 363 G4double ny = 0;
362 G4double dy1 = fPlanes[0].b*p.y(); 364 G4double dy1 = fPlanes[0].b*p.y();
363 G4double dy2 = fPlanes[0].c*p.z() + fPlanes[ 365 G4double dy2 = fPlanes[0].c*p.z() + fPlanes[0].d;
364 if (std::abs(dy2 + dy1) <= halfCarTolerance) 366 if (std::abs(dy2 + dy1) <= halfCarTolerance)
365 { 367 {
366 ny += fPlanes[0].b; 368 ny += fPlanes[0].b;
367 nz += fPlanes[0].c; 369 nz += fPlanes[0].c;
368 ++nsurf; 370 ++nsurf;
369 } 371 }
370 if (std::abs(dy2 - dy1) <= halfCarTolerance) 372 if (std::abs(dy2 - dy1) <= halfCarTolerance)
371 { 373 {
372 ny += fPlanes[1].b; 374 ny += fPlanes[1].b;
373 nz += fPlanes[1].c; 375 nz += fPlanes[1].c;
374 ++nsurf; 376 ++nsurf;
375 } 377 }
376 378
377 // Check X faces 379 // Check X faces
378 // 380 //
379 G4double nx = 0; 381 G4double nx = 0;
380 G4double dx1 = fPlanes[2].a*p.x(); 382 G4double dx1 = fPlanes[2].a*p.x();
381 G4double dx2 = fPlanes[2].c*p.z() + fPlanes[ 383 G4double dx2 = fPlanes[2].c*p.z() + fPlanes[2].d;
382 if (std::abs(dx2 + dx1) <= halfCarTolerance) 384 if (std::abs(dx2 + dx1) <= halfCarTolerance)
383 { 385 {
384 nx += fPlanes[2].a; 386 nx += fPlanes[2].a;
385 nz += fPlanes[2].c; 387 nz += fPlanes[2].c;
386 ++nsurf; 388 ++nsurf;
387 } 389 }
388 if (std::abs(dx2 - dx1) <= halfCarTolerance) 390 if (std::abs(dx2 - dx1) <= halfCarTolerance)
389 { 391 {
390 nx += fPlanes[3].a; 392 nx += fPlanes[3].a;
391 nz += fPlanes[3].c; 393 nz += fPlanes[3].c;
392 ++nsurf; 394 ++nsurf;
393 } 395 }
394 396
395 // Return normal 397 // Return normal
396 // 398 //
397 if (nsurf == 1) return {nx,ny,nz}; << 399 if (nsurf == 1) return G4ThreeVector(nx,ny,nz);
398 else if (nsurf != 0) return G4ThreeVector(nx 400 else if (nsurf != 0) return G4ThreeVector(nx,ny,nz).unit(); // edge or corner
399 else 401 else
400 { 402 {
401 // Point is not on the surface 403 // Point is not on the surface
402 // 404 //
403 #ifdef G4CSGDEBUG 405 #ifdef G4CSGDEBUG
404 std::ostringstream message; 406 std::ostringstream message;
405 G4long oldprc = message.precision(16); << 407 G4int oldprc = message.precision(16);
406 message << "Point p is not on surface (!?) 408 message << "Point p is not on surface (!?) of solid: "
407 << GetName() << G4endl; 409 << GetName() << G4endl;
408 message << "Position:\n"; 410 message << "Position:\n";
409 message << " p.x() = " << p.x()/mm << " 411 message << " p.x() = " << p.x()/mm << " mm\n";
410 message << " p.y() = " << p.y()/mm << " 412 message << " p.y() = " << p.y()/mm << " mm\n";
411 message << " p.z() = " << p.z()/mm << " 413 message << " p.z() = " << p.z()/mm << " mm";
412 G4cout.precision(oldprc) ; 414 G4cout.precision(oldprc) ;
413 G4Exception("G4Trd::SurfaceNormal(p)", "Ge 415 G4Exception("G4Trd::SurfaceNormal(p)", "GeomSolids1002",
414 JustWarning, message ); 416 JustWarning, message );
415 DumpInfo(); 417 DumpInfo();
416 #endif 418 #endif
417 return ApproxSurfaceNormal(p); 419 return ApproxSurfaceNormal(p);
418 } 420 }
419 } 421 }
420 422
421 ////////////////////////////////////////////// 423 //////////////////////////////////////////////////////////////////////////
422 // 424 //
423 // Algorithm for SurfaceNormal() following the 425 // Algorithm for SurfaceNormal() following the original specification
424 // for points not on the surface 426 // for points not on the surface
425 427
426 G4ThreeVector G4Trd::ApproxSurfaceNormal( cons 428 G4ThreeVector G4Trd::ApproxSurfaceNormal( const G4ThreeVector& p ) const
427 { 429 {
428 G4double dist = -DBL_MAX; 430 G4double dist = -DBL_MAX;
429 G4int iside = 0; 431 G4int iside = 0;
430 for (G4int i=0; i<4; ++i) 432 for (G4int i=0; i<4; ++i)
431 { 433 {
432 G4double d = fPlanes[i].a*p.x() + 434 G4double d = fPlanes[i].a*p.x() +
433 fPlanes[i].b*p.y() + 435 fPlanes[i].b*p.y() +
434 fPlanes[i].c*p.z() + fPlanes[ 436 fPlanes[i].c*p.z() + fPlanes[i].d;
435 if (d > dist) { dist = d; iside = i; } 437 if (d > dist) { dist = d; iside = i; }
436 } 438 }
437 439
438 G4double distz = std::abs(p.z()) - fDz; 440 G4double distz = std::abs(p.z()) - fDz;
439 if (dist > distz) 441 if (dist > distz)
440 return { fPlanes[iside].a, fPlanes[iside]. << 442 return G4ThreeVector(fPlanes[iside].a, fPlanes[iside].b, fPlanes[iside].c);
441 else 443 else
442 return { 0, 0, (G4double)((p.z() < 0) ? -1 << 444 return G4ThreeVector(0, 0, (p.z() < 0) ? -1 : 1);
443 } 445 }
444 446
445 ////////////////////////////////////////////// 447 //////////////////////////////////////////////////////////////////////////
446 // 448 //
447 // Calculate distance to shape from outside 449 // Calculate distance to shape from outside
448 // - return kInfinity if no intersection 450 // - return kInfinity if no intersection
449 451
450 G4double G4Trd::DistanceToIn(const G4ThreeVect 452 G4double G4Trd::DistanceToIn(const G4ThreeVector& p,
451 const G4ThreeVect 453 const G4ThreeVector& v ) const
452 { 454 {
453 // Z intersections 455 // Z intersections
454 // 456 //
455 if ((std::abs(p.z()) - fDz) >= -halfCarToler 457 if ((std::abs(p.z()) - fDz) >= -halfCarTolerance && p.z()*v.z() >= 0)
456 return kInfinity; 458 return kInfinity;
457 G4double invz = (-v.z() == 0) ? DBL_MAX : -1 459 G4double invz = (-v.z() == 0) ? DBL_MAX : -1./v.z();
458 G4double dz = (invz < 0) ? fDz : -fDz; << 460 G4double dz = (invz < 0) ? fDz : -fDz;
459 G4double tzmin = (p.z() + dz)*invz; 461 G4double tzmin = (p.z() + dz)*invz;
460 G4double tzmax = (p.z() - dz)*invz; 462 G4double tzmax = (p.z() - dz)*invz;
461 463
462 // Y intersections 464 // Y intersections
463 // 465 //
464 G4double tmin0 = tzmin, tmax0 = tzmax; 466 G4double tmin0 = tzmin, tmax0 = tzmax;
465 G4double ya = fPlanes[0].b*v.y(), yb = fPlan 467 G4double ya = fPlanes[0].b*v.y(), yb = fPlanes[0].c*v.z();
466 G4double yc = fPlanes[0].b*p.y(), yd = fPlan 468 G4double yc = fPlanes[0].b*p.y(), yd = fPlanes[0].c*p.z()+fPlanes[0].d;
467 G4double cos0 = yb + ya; 469 G4double cos0 = yb + ya;
468 G4double dis0 = yd + yc; 470 G4double dis0 = yd + yc;
469 if (dis0 >= -halfCarTolerance) 471 if (dis0 >= -halfCarTolerance)
470 { 472 {
471 if (cos0 >= 0) return kInfinity; 473 if (cos0 >= 0) return kInfinity;
472 G4double tmp = -dis0/cos0; 474 G4double tmp = -dis0/cos0;
473 if (tmin0 < tmp) tmin0 = tmp; 475 if (tmin0 < tmp) tmin0 = tmp;
474 } 476 }
475 else if (cos0 > 0) 477 else if (cos0 > 0)
476 { 478 {
477 G4double tmp = -dis0/cos0; 479 G4double tmp = -dis0/cos0;
478 if (tmax0 > tmp) tmax0 = tmp; 480 if (tmax0 > tmp) tmax0 = tmp;
479 } 481 }
480 482
481 G4double tmin1 = tmin0, tmax1 = tmax0; 483 G4double tmin1 = tmin0, tmax1 = tmax0;
482 G4double cos1 = yb - ya; 484 G4double cos1 = yb - ya;
483 G4double dis1 = yd - yc; 485 G4double dis1 = yd - yc;
484 if (dis1 >= -halfCarTolerance) 486 if (dis1 >= -halfCarTolerance)
485 { 487 {
486 if (cos1 >= 0) return kInfinity; 488 if (cos1 >= 0) return kInfinity;
487 G4double tmp = -dis1/cos1; 489 G4double tmp = -dis1/cos1;
488 if (tmin1 < tmp) tmin1 = tmp; 490 if (tmin1 < tmp) tmin1 = tmp;
489 } 491 }
490 else if (cos1 > 0) 492 else if (cos1 > 0)
491 { 493 {
492 G4double tmp = -dis1/cos1; 494 G4double tmp = -dis1/cos1;
493 if (tmax1 > tmp) tmax1 = tmp; 495 if (tmax1 > tmp) tmax1 = tmp;
494 } 496 }
495 497
496 // X intersections 498 // X intersections
497 // 499 //
498 G4double tmin2 = tmin1, tmax2 = tmax1; 500 G4double tmin2 = tmin1, tmax2 = tmax1;
499 G4double xa = fPlanes[2].a*v.x(), xb = fPlan 501 G4double xa = fPlanes[2].a*v.x(), xb = fPlanes[2].c*v.z();
500 G4double xc = fPlanes[2].a*p.x(), xd = fPlan 502 G4double xc = fPlanes[2].a*p.x(), xd = fPlanes[2].c*p.z()+fPlanes[2].d;
501 G4double cos2 = xb + xa; 503 G4double cos2 = xb + xa;
502 G4double dis2 = xd + xc; 504 G4double dis2 = xd + xc;
503 if (dis2 >= -halfCarTolerance) 505 if (dis2 >= -halfCarTolerance)
504 { 506 {
505 if (cos2 >= 0) return kInfinity; 507 if (cos2 >= 0) return kInfinity;
506 G4double tmp = -dis2/cos2; 508 G4double tmp = -dis2/cos2;
507 if (tmin2 < tmp) tmin2 = tmp; 509 if (tmin2 < tmp) tmin2 = tmp;
508 } 510 }
509 else if (cos2 > 0) 511 else if (cos2 > 0)
510 { 512 {
511 G4double tmp = -dis2/cos2; 513 G4double tmp = -dis2/cos2;
512 if (tmax2 > tmp) tmax2 = tmp; 514 if (tmax2 > tmp) tmax2 = tmp;
513 } 515 }
514 516
515 G4double tmin3 = tmin2, tmax3 = tmax2; 517 G4double tmin3 = tmin2, tmax3 = tmax2;
516 G4double cos3 = xb - xa; 518 G4double cos3 = xb - xa;
517 G4double dis3 = xd - xc; 519 G4double dis3 = xd - xc;
518 if (dis3 >= -halfCarTolerance) 520 if (dis3 >= -halfCarTolerance)
519 { 521 {
520 if (cos3 >= 0) return kInfinity; 522 if (cos3 >= 0) return kInfinity;
521 G4double tmp = -dis3/cos3; 523 G4double tmp = -dis3/cos3;
522 if (tmin3 < tmp) tmin3 = tmp; 524 if (tmin3 < tmp) tmin3 = tmp;
523 } 525 }
524 else if (cos3 > 0) 526 else if (cos3 > 0)
525 { 527 {
526 G4double tmp = -dis3/cos3; 528 G4double tmp = -dis3/cos3;
527 if (tmax3 > tmp) tmax3 = tmp; 529 if (tmax3 > tmp) tmax3 = tmp;
528 } 530 }
529 531
530 // Find distance 532 // Find distance
531 // 533 //
532 G4double tmin = tmin3, tmax = tmax3; 534 G4double tmin = tmin3, tmax = tmax3;
533 if (tmax <= tmin + halfCarTolerance) return 535 if (tmax <= tmin + halfCarTolerance) return kInfinity; // touch or no hit
534 return (tmin < halfCarTolerance ) ? 0. : tmi 536 return (tmin < halfCarTolerance ) ? 0. : tmin;
535 } 537 }
536 538
537 ////////////////////////////////////////////// 539 //////////////////////////////////////////////////////////////////////////
538 // 540 //
539 // Calculate exact shortest distance to any bo 541 // Calculate exact shortest distance to any boundary from outside
540 // This is the best fast estimation of the sho 542 // This is the best fast estimation of the shortest distance to trap
541 // - returns 0 if point is inside 543 // - returns 0 if point is inside
542 544
543 G4double G4Trd::DistanceToIn( const G4ThreeVec 545 G4double G4Trd::DistanceToIn( const G4ThreeVector& p ) const
544 { 546 {
545 G4double dx = fPlanes[3].a*std::abs(p.x())+f 547 G4double dx = fPlanes[3].a*std::abs(p.x())+fPlanes[3].c*p.z()+fPlanes[3].d;
546 G4double dy = fPlanes[1].b*std::abs(p.y())+f 548 G4double dy = fPlanes[1].b*std::abs(p.y())+fPlanes[1].c*p.z()+fPlanes[1].d;
547 G4double dxy = std::max(dx,dy); 549 G4double dxy = std::max(dx,dy);
548 550
549 G4double dz = std::abs(p.z())-fDz; 551 G4double dz = std::abs(p.z())-fDz;
550 G4double dist = std::max(dz,dxy); 552 G4double dist = std::max(dz,dxy);
551 553
552 return (dist > 0) ? dist : 0.; 554 return (dist > 0) ? dist : 0.;
553 } 555 }
554 556
555 ////////////////////////////////////////////// 557 //////////////////////////////////////////////////////////////////////////
556 // 558 //
557 // Calculate distance to surface of shape from 559 // Calculate distance to surface of shape from inside and
558 // find normal at exit point, if required 560 // find normal at exit point, if required
559 // - when leaving the surface, return 0 561 // - when leaving the surface, return 0
560 562
561 G4double G4Trd::DistanceToOut(const G4ThreeVec 563 G4double G4Trd::DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v,
562 const G4bool cal 564 const G4bool calcNorm,
563 G4bool* va 565 G4bool* validNorm, G4ThreeVector* n) const
564 { 566 {
565 // Z intersections 567 // Z intersections
566 // 568 //
567 if ((std::abs(p.z()) - fDz) >= -halfCarToler 569 if ((std::abs(p.z()) - fDz) >= -halfCarTolerance && p.z()*v.z() > 0)
568 { 570 {
569 if (calcNorm) 571 if (calcNorm)
570 { 572 {
571 *validNorm = true; 573 *validNorm = true;
572 n->set(0, 0, (p.z() < 0) ? -1 : 1); 574 n->set(0, 0, (p.z() < 0) ? -1 : 1);
573 } 575 }
574 return 0; 576 return 0;
575 } 577 }
576 G4double vz = v.z(); 578 G4double vz = v.z();
577 G4double tmax = (vz == 0) ? DBL_MAX : (std:: 579 G4double tmax = (vz == 0) ? DBL_MAX : (std::copysign(fDz,vz) - p.z())/vz;
578 G4int iside = (vz < 0) ? -4 : -2; // little 580 G4int iside = (vz < 0) ? -4 : -2; // little trick: (-4+3)=-1, (-2+3)=+1
579 581
580 // Y intersections 582 // Y intersections
581 // 583 //
582 G4int i = 0; 584 G4int i = 0;
583 for ( ; i<2; ++i) 585 for ( ; i<2; ++i)
584 { 586 {
585 G4double cosa = fPlanes[i].b*v.y() + fPlan 587 G4double cosa = fPlanes[i].b*v.y() + fPlanes[i].c*v.z();
586 if (cosa > 0) 588 if (cosa > 0)
587 { 589 {
588 G4double dist = fPlanes[i].b*p.y()+fPlan 590 G4double dist = fPlanes[i].b*p.y()+fPlanes[i].c*p.z()+fPlanes[i].d;
589 if (dist >= -halfCarTolerance) 591 if (dist >= -halfCarTolerance)
590 { 592 {
591 if (calcNorm) 593 if (calcNorm)
592 { 594 {
593 *validNorm = true; 595 *validNorm = true;
594 n->set(0, fPlanes[i].b, fPlanes[i].c 596 n->set(0, fPlanes[i].b, fPlanes[i].c);
595 } 597 }
596 return 0; 598 return 0;
597 } 599 }
598 G4double tmp = -dist/cosa; 600 G4double tmp = -dist/cosa;
599 if (tmax > tmp) { tmax = tmp; iside = i; 601 if (tmax > tmp) { tmax = tmp; iside = i; }
600 } 602 }
601 } 603 }
602 604
603 // X intersections 605 // X intersections
604 // 606 //
605 for ( ; i<4; ++i) 607 for ( ; i<4; ++i)
606 { 608 {
607 G4double cosa = fPlanes[i].a*v.x()+fPlanes 609 G4double cosa = fPlanes[i].a*v.x()+fPlanes[i].c*v.z();
608 if (cosa > 0) 610 if (cosa > 0)
609 { 611 {
610 G4double dist = fPlanes[i].a*p.x()+fPlan 612 G4double dist = fPlanes[i].a*p.x()+fPlanes[i].c*p.z()+fPlanes[i].d;
611 if (dist >= -halfCarTolerance) 613 if (dist >= -halfCarTolerance)
612 { 614 {
613 if (calcNorm) 615 if (calcNorm)
614 { 616 {
615 *validNorm = true; 617 *validNorm = true;
616 n->set(fPlanes[i].a, fPlanes[i].b, 618 n->set(fPlanes[i].a, fPlanes[i].b, fPlanes[i].c);
617 } 619 }
618 return 0; 620 return 0;
619 } 621 }
620 G4double tmp = -dist/cosa; 622 G4double tmp = -dist/cosa;
621 if (tmax > tmp) { tmax = tmp; iside = i; 623 if (tmax > tmp) { tmax = tmp; iside = i; }
622 } 624 }
623 } 625 }
624 626
625 // Set normal, if required, and return dista 627 // Set normal, if required, and return distance
626 // 628 //
627 if (calcNorm) << 629 if (calcNorm)
628 { 630 {
629 *validNorm = true; 631 *validNorm = true;
630 if (iside < 0) 632 if (iside < 0)
631 n->set(0, 0, iside + 3); // (-4+3)=-1, ( 633 n->set(0, 0, iside + 3); // (-4+3)=-1, (-2+3)=+1
632 else 634 else
633 n->set(fPlanes[iside].a, fPlanes[iside]. 635 n->set(fPlanes[iside].a, fPlanes[iside].b, fPlanes[iside].c);
634 } 636 }
635 return tmax; 637 return tmax;
636 } 638 }
637 639
638 ////////////////////////////////////////////// 640 //////////////////////////////////////////////////////////////////////////
639 // 641 //
640 // Calculate exact shortest distance to any bo 642 // Calculate exact shortest distance to any boundary from inside
641 // - returns 0 if point is outside 643 // - returns 0 if point is outside
642 644
643 G4double G4Trd::DistanceToOut( const G4ThreeVe 645 G4double G4Trd::DistanceToOut( const G4ThreeVector& p ) const
644 { 646 {
645 #ifdef G4CSGDEBUG 647 #ifdef G4CSGDEBUG
646 if( Inside(p) == kOutside ) 648 if( Inside(p) == kOutside )
647 { 649 {
648 std::ostringstream message; 650 std::ostringstream message;
649 G4long oldprc = message.precision(16); << 651 G4int oldprc = message.precision(16);
650 message << "Point p is outside (!?) of sol 652 message << "Point p is outside (!?) of solid: " << GetName() << G4endl;
651 message << "Position:\n"; 653 message << "Position:\n";
652 message << " p.x() = " << p.x()/mm << " 654 message << " p.x() = " << p.x()/mm << " mm\n";
653 message << " p.y() = " << p.y()/mm << " 655 message << " p.y() = " << p.y()/mm << " mm\n";
654 message << " p.z() = " << p.z()/mm << " 656 message << " p.z() = " << p.z()/mm << " mm";
655 G4cout.precision(oldprc); << 657 G4cout.precision(oldprc) ;
656 G4Exception("G4Trd::DistanceToOut(p)", "Ge 658 G4Exception("G4Trd::DistanceToOut(p)", "GeomSolids1002",
657 JustWarning, message ); 659 JustWarning, message );
658 DumpInfo(); 660 DumpInfo();
659 } 661 }
660 #endif 662 #endif
661 G4double dx = fPlanes[3].a*std::abs(p.x())+f 663 G4double dx = fPlanes[3].a*std::abs(p.x())+fPlanes[3].c*p.z()+fPlanes[3].d;
662 G4double dy = fPlanes[1].b*std::abs(p.y())+f 664 G4double dy = fPlanes[1].b*std::abs(p.y())+fPlanes[1].c*p.z()+fPlanes[1].d;
663 G4double dxy = std::max(dx,dy); 665 G4double dxy = std::max(dx,dy);
664 666
665 G4double dz = std::abs(p.z())-fDz; 667 G4double dz = std::abs(p.z())-fDz;
666 G4double dist = std::max(dz,dxy); 668 G4double dist = std::max(dz,dxy);
667 << 669
668 return (dist < 0) ? -dist : 0.; 670 return (dist < 0) ? -dist : 0.;
669 } 671 }
670 672
671 ////////////////////////////////////////////// 673 //////////////////////////////////////////////////////////////////////////
672 // 674 //
673 // GetEntityType 675 // GetEntityType
674 676
675 G4GeometryType G4Trd::GetEntityType() const 677 G4GeometryType G4Trd::GetEntityType() const
676 { 678 {
677 return {"G4Trd"}; << 679 return G4String("G4Trd");
678 } <<
679 <<
680 ////////////////////////////////////////////// <<
681 // <<
682 // IsFaceted <<
683 <<
684 G4bool G4Trd::IsFaceted() const <<
685 { <<
686 return true; <<
687 } 680 }
688 681
689 ////////////////////////////////////////////// 682 //////////////////////////////////////////////////////////////////////////
690 // 683 //
691 // Make a clone of the object 684 // Make a clone of the object
692 // 685 //
693 G4VSolid* G4Trd::Clone() const 686 G4VSolid* G4Trd::Clone() const
694 { 687 {
695 return new G4Trd(*this); 688 return new G4Trd(*this);
696 } 689 }
697 690
698 ////////////////////////////////////////////// 691 //////////////////////////////////////////////////////////////////////////
699 // 692 //
700 // Stream object contents to an output stream 693 // Stream object contents to an output stream
701 694
702 std::ostream& G4Trd::StreamInfo( std::ostream& 695 std::ostream& G4Trd::StreamInfo( std::ostream& os ) const
703 { 696 {
704 G4long oldprc = os.precision(16); << 697 G4int oldprc = os.precision(16);
705 os << "------------------------------------- 698 os << "-----------------------------------------------------------\n"
706 << " *** Dump for solid - " << GetName 699 << " *** Dump for solid - " << GetName() << " ***\n"
707 << " ================================= 700 << " ===================================================\n"
708 << " Solid type: G4Trd\n" 701 << " Solid type: G4Trd\n"
709 << " Parameters: \n" 702 << " Parameters: \n"
710 << " half length X, surface -dZ: " << 703 << " half length X, surface -dZ: " << fDx1/mm << " mm \n"
711 << " half length X, surface +dZ: " << 704 << " half length X, surface +dZ: " << fDx2/mm << " mm \n"
712 << " half length Y, surface -dZ: " << 705 << " half length Y, surface -dZ: " << fDy1/mm << " mm \n"
713 << " half length Y, surface +dZ: " << 706 << " half length Y, surface +dZ: " << fDy2/mm << " mm \n"
714 << " half length Z : " << 707 << " half length Z : " << fDz/mm << " mm \n"
715 << "------------------------------------- 708 << "-----------------------------------------------------------\n";
716 os.precision(oldprc); 709 os.precision(oldprc);
717 710
718 return os; 711 return os;
719 } 712 }
720 713
721 ////////////////////////////////////////////// 714 //////////////////////////////////////////////////////////////////////////
722 // 715 //
723 // Return a point randomly and uniformly selec 716 // Return a point randomly and uniformly selected on the solid surface
724 717
725 G4ThreeVector G4Trd::GetPointOnSurface() const 718 G4ThreeVector G4Trd::GetPointOnSurface() const
726 { 719 {
727 // Set areas << 720 // Set vertices
728 // 721 //
729 G4double sxz = (fDx1 + fDx2)*fHx; << 722 G4ThreeVector pt[8];
730 G4double syz = (fDy1 + fDy2)*fHy; << 723 pt[0].set(-fDx1,-fDy1,-fDz);
731 G4double ssurf[6] = { 4.*fDx1*fDy1, sxz, sxz << 724 pt[1].set( fDx1,-fDy1,-fDz);
732 ssurf[1] += ssurf[0]; << 725 pt[2].set(-fDx1, fDy1,-fDz);
733 ssurf[2] += ssurf[1]; << 726 pt[3].set( fDx1, fDy1,-fDz);
734 ssurf[3] += ssurf[2]; << 727 pt[4].set(-fDx2,-fDy2, fDz);
735 ssurf[4] += ssurf[3]; << 728 pt[5].set( fDx2,-fDy2, fDz);
736 ssurf[5] += ssurf[4]; << 729 pt[6].set(-fDx2, fDy2, fDz);
>> 730 pt[7].set( fDx2, fDy2, fDz);
>> 731
>> 732 // Set faces (-Z, -Y, +Y, -X, +X, +Z)
>> 733 //
>> 734 G4int iface [6][4] =
>> 735 { {0,1,3,2}, {0,4,5,1}, {2,3,7,6}, {0,2,6,4}, {1,5,7,3}, {4,6,7,5} };
>> 736
>> 737 // Set areas
>> 738 //
>> 739 G4double sxz = (fDy1 + fDy2)*std::hypot(fDx1 - fDx2, 2*fDz);
>> 740 G4double syz = (fDx1 + fDx2)*std::hypot(fDy1 - fDy2, 2*fDz);
>> 741 G4double sface[6] = { 4*fDx1*fDy1, syz, syz, sxz, sxz, 4*fDx2*fDy2 };
>> 742 for (G4int i=1; i<6; ++i) { sface[i] += sface[i-1]; }
737 743
738 // Select face 744 // Select face
739 // 745 //
740 G4double select = ssurf[5]*G4QuickRand(); << 746 G4double select = sface[5]*G4UniformRand();
741 G4int k = 5; 747 G4int k = 5;
742 k -= (G4int)(select <= ssurf[4]); << 748 if (select <= sface[4]) k = 4;
743 k -= (G4int)(select <= ssurf[3]); << 749 if (select <= sface[3]) k = 3;
744 k -= (G4int)(select <= ssurf[2]); << 750 if (select <= sface[2]) k = 2;
745 k -= (G4int)(select <= ssurf[1]); << 751 if (select <= sface[1]) k = 1;
746 k -= (G4int)(select <= ssurf[0]); << 752 if (select <= sface[0]) k = 0;
747 << 753
748 // Generate point on selected surface << 754 // Select sub-triangle
749 // << 755 //
750 G4double u = G4QuickRand(); << 756 G4int i0 = iface[k][0];
751 G4double v = G4QuickRand(); << 757 G4int i1 = iface[k][1];
752 switch(k) << 758 G4int i2 = iface[k][2];
753 { << 759 G4int i3 = iface[k][3];
754 case 0: // base at -Z << 760 G4double s1 = G4GeomTools::TriangleAreaNormal(pt[i0],pt[i1],pt[i3]).mag();
755 { << 761 G4double s2 = G4GeomTools::TriangleAreaNormal(pt[i2],pt[i1],pt[i3]).mag();
756 return { (2.*u - 1.)*fDx1, (2.*v - 1.)*f << 762 if ((s1+s2)*G4UniformRand() > s1) i0 = i2;
757 } << 763
758 case 1: // X face at -Y << 764 // Generate point
759 { << 765 //
760 if (u + v > 1.) { u = 1. - u; v = 1. - v << 766 G4double u = G4UniformRand();
761 G4ThreeVector p0(-fDx1,-fDy1,-fDz); << 767 G4double v = G4UniformRand();
762 G4ThreeVector p1( fDx2,-fDy2, fDz); << 768 if (u + v > 1.) { u = 1. - u; v = 1. - v; }
763 return (select <= ssurf[0] + fDx1*fHx) ? << 769 return (1.-u-v)*pt[i0] + u*pt[i1] + v*pt[i3];
764 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
765 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
766 } <<
767 case 2: // X face at +Y <<
768 { <<
769 if (u + v > 1.) { u = 1. - u; v = 1. - v <<
770 G4ThreeVector p0( fDx1, fDy1,-fDz); <<
771 G4ThreeVector p1(-fDx2, fDy2, fDz); <<
772 return (select <= ssurf[1] + fDx1*fHx) ? <<
773 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
774 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
775 } <<
776 case 3: // Y face at -X <<
777 { <<
778 if (u + v > 1.) { u = 1. - u; v = 1. - v <<
779 G4ThreeVector p0(-fDx1, fDy1,-fDz); <<
780 G4ThreeVector p1(-fDx2,-fDy2, fDz); <<
781 return (select <= ssurf[2] + fDy1*fHy) ? <<
782 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
783 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
784 } <<
785 case 4: // Y face at +X <<
786 { <<
787 if (u + v > 1.) { u = 1. - u; v = 1. - v <<
788 G4ThreeVector p0( fDx1,-fDy1,-fDz); <<
789 G4ThreeVector p1( fDx2, fDy2, fDz); <<
790 return (select <= ssurf[3] + fDy1*fHy) ? <<
791 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
792 (1. - u - v)*p0 + u*p1 + v*G4ThreeVect <<
793 } <<
794 case 5: // base at +Z <<
795 { <<
796 return { (2.*u - 1.)*fDx2, (2.*v - 1.)*f <<
797 } <<
798 } <<
799 return {0., 0., 0.}; <<
800 } 770 }
801 771
802 ////////////////////////////////////////////// 772 //////////////////////////////////////////////////////////////////////////
803 // 773 //
804 // Methods for visualisation 774 // Methods for visualisation
805 775
806 void G4Trd::DescribeYourselfTo ( G4VGraphicsSc 776 void G4Trd::DescribeYourselfTo ( G4VGraphicsScene& scene ) const
807 { 777 {
808 scene.AddSolid (*this); 778 scene.AddSolid (*this);
809 } 779 }
810 780
811 G4Polyhedron* G4Trd::CreatePolyhedron () const 781 G4Polyhedron* G4Trd::CreatePolyhedron () const
812 { 782 {
813 return new G4PolyhedronTrd2 (fDx1, fDx2, fDy 783 return new G4PolyhedronTrd2 (fDx1, fDx2, fDy1, fDy2, fDz);
814 } 784 }
815 785
816 #endif 786 #endif
817 787