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25 // 25 //
26 // Implementation for G4Box class 26 // Implementation for G4Box class
27 // 27 //
28 // 30.06.95 - P.Kent: First version 28 // 30.06.95 - P.Kent: First version
29 // 20.09.98 - V.Grichine: new algorithm of Di 29 // 20.09.98 - V.Grichine: new algorithm of DistanceToIn(p,v)
30 // 18.04.17 - E.Tcherniaev: complete revision 30 // 18.04.17 - E.Tcherniaev: complete revision, speed-up
31 // ------------------------------------------- 31 // --------------------------------------------------------------------
32 32
33 #include "G4Box.hh" 33 #include "G4Box.hh"
34 34
35 #if !defined(G4GEOM_USE_UBOX) 35 #if !defined(G4GEOM_USE_UBOX)
36 36
37 #include "G4SystemOfUnits.hh" 37 #include "G4SystemOfUnits.hh"
38 #include "G4VoxelLimits.hh" 38 #include "G4VoxelLimits.hh"
39 #include "G4AffineTransform.hh" 39 #include "G4AffineTransform.hh"
40 #include "G4BoundingEnvelope.hh" 40 #include "G4BoundingEnvelope.hh"
41 #include "G4QuickRand.hh" << 41 #include "Randomize.hh"
42 42
43 #include "G4VPVParameterisation.hh" 43 #include "G4VPVParameterisation.hh"
44 44
45 #include "G4VGraphicsScene.hh" 45 #include "G4VGraphicsScene.hh"
46 #include "G4VisExtent.hh" 46 #include "G4VisExtent.hh"
47 47
48 ////////////////////////////////////////////// 48 ////////////////////////////////////////////////////////////////////////
49 // 49 //
50 // Constructor - check & set half widths 50 // Constructor - check & set half widths
51 51
52 G4Box::G4Box(const G4String& pName, 52 G4Box::G4Box(const G4String& pName,
53 G4double pX, 53 G4double pX,
54 G4double pY, 54 G4double pY,
55 G4double pZ) 55 G4double pZ)
56 : G4CSGSolid(pName), fDx(pX), fDy(pY), fDz(p 56 : G4CSGSolid(pName), fDx(pX), fDy(pY), fDz(pZ)
57 { 57 {
58 delta = 0.5*kCarTolerance; 58 delta = 0.5*kCarTolerance;
59 if (pX < 2*kCarTolerance || 59 if (pX < 2*kCarTolerance ||
60 pY < 2*kCarTolerance || 60 pY < 2*kCarTolerance ||
61 pZ < 2*kCarTolerance) // limit to thick 61 pZ < 2*kCarTolerance) // limit to thickness of surfaces
62 { 62 {
63 std::ostringstream message; 63 std::ostringstream message;
64 message << "Dimensions too small for Solid 64 message << "Dimensions too small for Solid: " << GetName() << "!" << G4endl
65 << " hX, hY, hZ = " << pX << " 65 << " hX, hY, hZ = " << pX << ", " << pY << ", " << pZ;
66 G4Exception("G4Box::G4Box()", "GeomSolids0 66 G4Exception("G4Box::G4Box()", "GeomSolids0002", FatalException, message);
67 } 67 }
68 } 68 }
69 69
70 ////////////////////////////////////////////// 70 //////////////////////////////////////////////////////////////////////////
71 // 71 //
72 // Fake default constructor - sets only member 72 // Fake default constructor - sets only member data and allocates memory
73 // for usage restri 73 // for usage restricted to object persistency
74 74
75 G4Box::G4Box( __void__& a ) 75 G4Box::G4Box( __void__& a )
76 : G4CSGSolid(a) << 76 : G4CSGSolid(a), delta(0.)
77 { 77 {
78 } 78 }
79 79
80 ////////////////////////////////////////////// 80 //////////////////////////////////////////////////////////////////////////
81 // 81 //
82 // Destructor 82 // Destructor
83 83
84 G4Box::~G4Box() = default; << 84 G4Box::~G4Box()
>> 85 {
>> 86 }
85 87
86 ////////////////////////////////////////////// 88 //////////////////////////////////////////////////////////////////////////
87 // 89 //
88 // Copy constructor 90 // Copy constructor
89 91
90 G4Box::G4Box(const G4Box&) = default; << 92 G4Box::G4Box(const G4Box& rhs)
>> 93 : G4CSGSolid(rhs), fDx(rhs.fDx), fDy(rhs.fDy), fDz(rhs.fDz), delta(rhs.delta)
>> 94 {
>> 95 }
91 96
92 ////////////////////////////////////////////// 97 //////////////////////////////////////////////////////////////////////////
93 // 98 //
94 // Assignment operator 99 // Assignment operator
95 100
96 G4Box& G4Box::operator = (const G4Box& rhs) 101 G4Box& G4Box::operator = (const G4Box& rhs)
97 { 102 {
98 // Check assignment to self 103 // Check assignment to self
99 // 104 //
100 if (this == &rhs) { return *this; } 105 if (this == &rhs) { return *this; }
101 106
102 // Copy base class data 107 // Copy base class data
103 // 108 //
104 G4CSGSolid::operator=(rhs); 109 G4CSGSolid::operator=(rhs);
105 110
106 // Copy data 111 // Copy data
107 // 112 //
108 fDx = rhs.fDx; 113 fDx = rhs.fDx;
109 fDy = rhs.fDy; 114 fDy = rhs.fDy;
110 fDz = rhs.fDz; 115 fDz = rhs.fDz;
111 delta = rhs.delta; 116 delta = rhs.delta;
112 117
113 return *this; 118 return *this;
114 } 119 }
115 120
116 ////////////////////////////////////////////// 121 //////////////////////////////////////////////////////////////////////////
117 // 122 //
118 // Set X dimension 123 // Set X dimension
119 124
120 void G4Box::SetXHalfLength(G4double dx) 125 void G4Box::SetXHalfLength(G4double dx)
121 { 126 {
122 if(dx > 2*kCarTolerance) // limit to thickn 127 if(dx > 2*kCarTolerance) // limit to thickness of surfaces
123 { 128 {
124 fDx = dx; 129 fDx = dx;
125 } 130 }
126 else 131 else
127 { 132 {
128 std::ostringstream message; 133 std::ostringstream message;
129 message << "Dimension X too small for soli 134 message << "Dimension X too small for solid: " << GetName() << "!"
130 << G4endl 135 << G4endl
131 << " hX = " << dx; 136 << " hX = " << dx;
132 G4Exception("G4Box::SetXHalfLength()", "Ge 137 G4Exception("G4Box::SetXHalfLength()", "GeomSolids0002",
133 FatalException, message); 138 FatalException, message);
134 } 139 }
135 fCubicVolume = 0.; 140 fCubicVolume = 0.;
136 fSurfaceArea = 0.; 141 fSurfaceArea = 0.;
137 fRebuildPolyhedron = true; 142 fRebuildPolyhedron = true;
138 } << 143 }
139 144
140 ////////////////////////////////////////////// 145 //////////////////////////////////////////////////////////////////////////
141 // 146 //
142 // Set Y dimension 147 // Set Y dimension
143 148
144 void G4Box::SetYHalfLength(G4double dy) << 149 void G4Box::SetYHalfLength(G4double dy)
145 { 150 {
146 if(dy > 2*kCarTolerance) // limit to thickn 151 if(dy > 2*kCarTolerance) // limit to thickness of surfaces
147 { 152 {
148 fDy = dy; 153 fDy = dy;
149 } 154 }
150 else 155 else
151 { 156 {
152 std::ostringstream message; 157 std::ostringstream message;
153 message << "Dimension Y too small for soli 158 message << "Dimension Y too small for solid: " << GetName() << "!\n"
154 << " hY = " << dy; 159 << " hY = " << dy;
155 G4Exception("G4Box::SetYHalfLength()", "Ge 160 G4Exception("G4Box::SetYHalfLength()", "GeomSolids0002",
156 FatalException, message); 161 FatalException, message);
157 } 162 }
158 fCubicVolume = 0.; 163 fCubicVolume = 0.;
159 fSurfaceArea = 0.; 164 fSurfaceArea = 0.;
160 fRebuildPolyhedron = true; 165 fRebuildPolyhedron = true;
161 } << 166 }
162 167
163 ////////////////////////////////////////////// 168 //////////////////////////////////////////////////////////////////////////
164 // 169 //
165 // Set Z dimension 170 // Set Z dimension
166 171
167 void G4Box::SetZHalfLength(G4double dz) 172 void G4Box::SetZHalfLength(G4double dz)
168 { 173 {
169 if(dz > 2*kCarTolerance) // limit to thickn 174 if(dz > 2*kCarTolerance) // limit to thickness of surfaces
170 { 175 {
171 fDz = dz; 176 fDz = dz;
172 } 177 }
173 else 178 else
174 { 179 {
175 std::ostringstream message; 180 std::ostringstream message;
176 message << "Dimension Z too small for soli 181 message << "Dimension Z too small for solid: " << GetName() << "!\n"
177 << " hZ = " << dz; 182 << " hZ = " << dz;
178 G4Exception("G4Box::SetZHalfLength()", "Ge 183 G4Exception("G4Box::SetZHalfLength()", "GeomSolids0002",
179 FatalException, message); 184 FatalException, message);
180 } 185 }
181 fCubicVolume = 0.; 186 fCubicVolume = 0.;
182 fSurfaceArea = 0.; 187 fSurfaceArea = 0.;
183 fRebuildPolyhedron = true; 188 fRebuildPolyhedron = true;
184 } << 189 }
185 190
186 ////////////////////////////////////////////// 191 //////////////////////////////////////////////////////////////////////////
187 // 192 //
188 // Dispatch to parameterisation for replicatio 193 // Dispatch to parameterisation for replication mechanism dimension
189 // computation & modification. 194 // computation & modification.
190 195
191 void G4Box::ComputeDimensions(G4VPVParameteris 196 void G4Box::ComputeDimensions(G4VPVParameterisation* p,
192 const G4int n, 197 const G4int n,
193 const G4VPhysica 198 const G4VPhysicalVolume* pRep)
194 { 199 {
195 p->ComputeDimensions(*this,n,pRep); 200 p->ComputeDimensions(*this,n,pRep);
196 } 201 }
197 202
198 ////////////////////////////////////////////// 203 //////////////////////////////////////////////////////////////////////////
199 // 204 //
200 // Get bounding box 205 // Get bounding box
201 206
202 void G4Box::BoundingLimits(G4ThreeVector& pMin 207 void G4Box::BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const
203 { 208 {
204 pMin.set(-fDx,-fDy,-fDz); 209 pMin.set(-fDx,-fDy,-fDz);
205 pMax.set( fDx, fDy, fDz); 210 pMax.set( fDx, fDy, fDz);
206 211
207 // Check correctness of the bounding box 212 // Check correctness of the bounding box
208 // 213 //
209 if (pMin.x() >= pMax.x() || pMin.y() >= pMax 214 if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
210 { 215 {
211 std::ostringstream message; 216 std::ostringstream message;
212 message << "Bad bounding box (min >= max) 217 message << "Bad bounding box (min >= max) for solid: "
213 << GetName() << " !" 218 << GetName() << " !"
214 << "\npMin = " << pMin 219 << "\npMin = " << pMin
215 << "\npMax = " << pMax; 220 << "\npMax = " << pMax;
216 G4Exception("G4Box::BoundingLimits()", "Ge 221 G4Exception("G4Box::BoundingLimits()", "GeomMgt0001", JustWarning, message);
217 DumpInfo(); 222 DumpInfo();
218 } 223 }
219 } 224 }
220 225
221 ////////////////////////////////////////////// 226 //////////////////////////////////////////////////////////////////////////
222 // 227 //
223 // Calculate extent under transform and specif 228 // Calculate extent under transform and specified limit
224 229
225 G4bool G4Box::CalculateExtent(const EAxis pAxi 230 G4bool G4Box::CalculateExtent(const EAxis pAxis,
226 const G4VoxelLim 231 const G4VoxelLimits& pVoxelLimit,
227 const G4AffineTr 232 const G4AffineTransform& pTransform,
228 G4double& 233 G4double& pMin, G4double& pMax) const
229 { 234 {
230 G4ThreeVector bmin, bmax; 235 G4ThreeVector bmin, bmax;
231 236
232 // Get bounding box 237 // Get bounding box
233 BoundingLimits(bmin,bmax); 238 BoundingLimits(bmin,bmax);
234 239
235 // Find extent 240 // Find extent
236 G4BoundingEnvelope bbox(bmin,bmax); 241 G4BoundingEnvelope bbox(bmin,bmax);
237 return bbox.CalculateExtent(pAxis,pVoxelLimi 242 return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
238 } 243 }
239 244
240 ////////////////////////////////////////////// 245 //////////////////////////////////////////////////////////////////////////
241 // 246 //
242 // Return whether point inside/outside/on surf 247 // Return whether point inside/outside/on surface, using tolerance
243 248
244 EInside G4Box::Inside(const G4ThreeVector& p) 249 EInside G4Box::Inside(const G4ThreeVector& p) const
245 { 250 {
246 G4double dist = std::max(std::max( 251 G4double dist = std::max(std::max(
247 std::abs(p.x())-fDx, 252 std::abs(p.x())-fDx,
248 std::abs(p.y())-fDy), 253 std::abs(p.y())-fDy),
249 std::abs(p.z())-fDz); 254 std::abs(p.z())-fDz);
250 return (dist > delta) ? kOutside : << 255 if (dist > delta) return kOutside;
251 ((dist > -delta) ? kSurface : kInside); << 256 return (dist > -delta) ? kSurface : kInside;
252 } 257 }
253 258
254 ////////////////////////////////////////////// 259 //////////////////////////////////////////////////////////////////////////
255 // 260 //
256 // Detect the side(s) and return corresponding 261 // Detect the side(s) and return corresponding normal
257 262
258 G4ThreeVector G4Box::SurfaceNormal( const G4Th 263 G4ThreeVector G4Box::SurfaceNormal( const G4ThreeVector& p) const
259 { 264 {
260 G4ThreeVector norm(0,0,0); 265 G4ThreeVector norm(0,0,0);
261 G4double px = p.x(); 266 G4double px = p.x();
262 if (std::abs(std::abs(px) - fDx) <= delta) n 267 if (std::abs(std::abs(px) - fDx) <= delta) norm.setX(px < 0 ? -1. : 1.);
263 G4double py = p.y(); 268 G4double py = p.y();
264 if (std::abs(std::abs(py) - fDy) <= delta) n 269 if (std::abs(std::abs(py) - fDy) <= delta) norm.setY(py < 0 ? -1. : 1.);
265 G4double pz = p.z(); 270 G4double pz = p.z();
266 if (std::abs(std::abs(pz) - fDz) <= delta) n 271 if (std::abs(std::abs(pz) - fDz) <= delta) norm.setZ(pz < 0 ? -1. : 1.);
267 272
268 G4double nside = norm.mag2(); // number of s 273 G4double nside = norm.mag2(); // number of sides = magnitude squared
269 if (nside == 1) 274 if (nside == 1)
270 return norm; 275 return norm;
271 else if (nside > 1) 276 else if (nside > 1)
272 return norm.unit(); // edge or corner 277 return norm.unit(); // edge or corner
273 else 278 else
274 { 279 {
275 // Point is not on the surface 280 // Point is not on the surface
276 // << 281 //
277 #ifdef G4CSGDEBUG 282 #ifdef G4CSGDEBUG
278 std::ostringstream message; 283 std::ostringstream message;
279 G4int oldprc = message.precision(16); 284 G4int oldprc = message.precision(16);
280 message << "Point p is not on surface (!?) 285 message << "Point p is not on surface (!?) of solid: "
281 << GetName() << G4endl; 286 << GetName() << G4endl;
282 message << "Position:\n"; 287 message << "Position:\n";
283 message << " p.x() = " << p.x()/mm << " 288 message << " p.x() = " << p.x()/mm << " mm\n";
284 message << " p.y() = " << p.y()/mm << " 289 message << " p.y() = " << p.y()/mm << " mm\n";
285 message << " p.z() = " << p.z()/mm << " 290 message << " p.z() = " << p.z()/mm << " mm";
286 G4cout.precision(oldprc); 291 G4cout.precision(oldprc);
287 G4Exception("G4Box::SurfaceNormal(p)", "Ge 292 G4Exception("G4Box::SurfaceNormal(p)", "GeomSolids1002",
288 JustWarning, message ); 293 JustWarning, message );
289 DumpInfo(); 294 DumpInfo();
290 #endif 295 #endif
291 return ApproxSurfaceNormal(p); 296 return ApproxSurfaceNormal(p);
292 } 297 }
293 } 298 }
294 299
295 ////////////////////////////////////////////// 300 //////////////////////////////////////////////////////////////////////////
296 // 301 //
297 // Algorithm for SurfaceNormal() following the 302 // Algorithm for SurfaceNormal() following the original specification
298 // for points not on the surface 303 // for points not on the surface
299 304
300 G4ThreeVector G4Box::ApproxSurfaceNormal(const 305 G4ThreeVector G4Box::ApproxSurfaceNormal(const G4ThreeVector& p) const
301 { 306 {
302 G4double distx = std::abs(p.x()) - fDx; 307 G4double distx = std::abs(p.x()) - fDx;
303 G4double disty = std::abs(p.y()) - fDy; 308 G4double disty = std::abs(p.y()) - fDy;
304 G4double distz = std::abs(p.z()) - fDz; 309 G4double distz = std::abs(p.z()) - fDz;
305 310
306 if (distx >= disty && distx >= distz) 311 if (distx >= disty && distx >= distz)
307 return {std::copysign(1.,p.x()), 0., 0.}; << 312 return G4ThreeVector(std::copysign(1.,p.x()), 0., 0.);
308 if (disty >= distx && disty >= distz) 313 if (disty >= distx && disty >= distz)
309 return {0., std::copysign(1.,p.y()), 0.}; << 314 return G4ThreeVector(0., std::copysign(1.,p.y()), 0.);
310 else 315 else
311 return {0., 0., std::copysign(1.,p.z())}; << 316 return G4ThreeVector(0., 0., std::copysign(1.,p.z()));
312 } 317 }
313 318
314 ////////////////////////////////////////////// 319 //////////////////////////////////////////////////////////////////////////
315 // 320 //
316 // Calculate distance to box from an outside p 321 // Calculate distance to box from an outside point
317 // - return kInfinity if no intersection 322 // - return kInfinity if no intersection
318 // 323 //
319 324
320 G4double G4Box::DistanceToIn(const G4ThreeVect 325 G4double G4Box::DistanceToIn(const G4ThreeVector& p,
321 const G4ThreeVect 326 const G4ThreeVector& v) const
322 { 327 {
323 // Check if point is on the surface and trav 328 // Check if point is on the surface and traveling away
324 // 329 //
325 if ((std::abs(p.x()) - fDx) >= -delta && p.x 330 if ((std::abs(p.x()) - fDx) >= -delta && p.x()*v.x() >= 0) return kInfinity;
326 if ((std::abs(p.y()) - fDy) >= -delta && p.y 331 if ((std::abs(p.y()) - fDy) >= -delta && p.y()*v.y() >= 0) return kInfinity;
327 if ((std::abs(p.z()) - fDz) >= -delta && p.z 332 if ((std::abs(p.z()) - fDz) >= -delta && p.z()*v.z() >= 0) return kInfinity;
328 333
329 // Find intersection 334 // Find intersection
330 // 335 //
331 G4double invx = (v.x() == 0) ? DBL_MAX : -1. 336 G4double invx = (v.x() == 0) ? DBL_MAX : -1./v.x();
332 G4double dx = std::copysign(fDx,invx); 337 G4double dx = std::copysign(fDx,invx);
333 G4double txmin = (p.x() - dx)*invx; 338 G4double txmin = (p.x() - dx)*invx;
334 G4double txmax = (p.x() + dx)*invx; 339 G4double txmax = (p.x() + dx)*invx;
335 340
336 G4double invy = (v.y() == 0) ? DBL_MAX : -1. 341 G4double invy = (v.y() == 0) ? DBL_MAX : -1./v.y();
337 G4double dy = std::copysign(fDy,invy); 342 G4double dy = std::copysign(fDy,invy);
338 G4double tymin = std::max(txmin,(p.y() - dy) 343 G4double tymin = std::max(txmin,(p.y() - dy)*invy);
339 G4double tymax = std::min(txmax,(p.y() + dy) 344 G4double tymax = std::min(txmax,(p.y() + dy)*invy);
340 345
341 G4double invz = (v.z() == 0) ? DBL_MAX : -1. 346 G4double invz = (v.z() == 0) ? DBL_MAX : -1./v.z();
342 G4double dz = std::copysign(fDz,invz); 347 G4double dz = std::copysign(fDz,invz);
343 G4double tmin = std::max(tymin,(p.z() - dz)* 348 G4double tmin = std::max(tymin,(p.z() - dz)*invz);
344 G4double tmax = std::min(tymax,(p.z() + dz)* 349 G4double tmax = std::min(tymax,(p.z() + dz)*invz);
345 350
346 if (tmax <= tmin + delta) return kInfinity; 351 if (tmax <= tmin + delta) return kInfinity; // touch or no hit
347 return (tmin < delta) ? 0. : tmin; 352 return (tmin < delta) ? 0. : tmin;
348 } 353 }
349 354
350 ////////////////////////////////////////////// 355 //////////////////////////////////////////////////////////////////////////
351 // << 356 //
352 // Appoximate distance to box. 357 // Appoximate distance to box.
353 // Returns largest perpendicular distance to t 358 // Returns largest perpendicular distance to the closest x/y/z sides of
354 // the box, which is the most fast estimation 359 // the box, which is the most fast estimation of the shortest distance to box
355 // - If inside return 0 360 // - If inside return 0
356 361
357 G4double G4Box::DistanceToIn(const G4ThreeVect 362 G4double G4Box::DistanceToIn(const G4ThreeVector& p) const
358 { 363 {
359 G4double dist = std::max(std::max( << 364 G4double dist = std::max(std::max(std::abs(p.x())-fDx,
360 std::abs(p.x())-fDx, << 365 std::abs(p.y())-fDy),
361 std::abs(p.y())-fDy), << 366 std::abs(p.z())-fDz);
362 std::abs(p.z())-fDz); <<
363 return (dist > 0) ? dist : 0.; 367 return (dist > 0) ? dist : 0.;
364 } 368 }
365 369
366 ////////////////////////////////////////////// 370 //////////////////////////////////////////////////////////////////////////
367 // 371 //
368 // Calculate distance to surface of the box fr 372 // Calculate distance to surface of the box from inside and
369 // find normal at exit point, if required 373 // find normal at exit point, if required
370 // - when leaving the surface, return 0 374 // - when leaving the surface, return 0
371 375
372 G4double G4Box::DistanceToOut( const G4ThreeVe 376 G4double G4Box::DistanceToOut( const G4ThreeVector& p,
373 const G4ThreeVe 377 const G4ThreeVector& v,
374 const G4bool ca 378 const G4bool calcNorm,
375 G4bool* validNo 379 G4bool* validNorm, G4ThreeVector* n) const
376 { 380 {
377 // Check if point is on the surface and trav 381 // Check if point is on the surface and traveling away
378 // 382 //
379 if ((std::abs(p.x()) - fDx) >= -delta && p.x 383 if ((std::abs(p.x()) - fDx) >= -delta && p.x()*v.x() > 0)
380 { 384 {
381 if (calcNorm) 385 if (calcNorm)
382 { 386 {
383 *validNorm = true; 387 *validNorm = true;
384 n->set((p.x() < 0) ? -1. : 1., 0., 0.); 388 n->set((p.x() < 0) ? -1. : 1., 0., 0.);
385 } 389 }
386 return 0.; 390 return 0.;
387 } 391 }
388 if ((std::abs(p.y()) - fDy) >= -delta && p.y 392 if ((std::abs(p.y()) - fDy) >= -delta && p.y()*v.y() > 0)
389 { 393 {
390 if (calcNorm) 394 if (calcNorm)
391 { 395 {
392 *validNorm = true; 396 *validNorm = true;
393 n->set(0., (p.y() < 0) ? -1. : 1., 0.); 397 n->set(0., (p.y() < 0) ? -1. : 1., 0.);
394 } 398 }
395 return 0.; 399 return 0.;
396 } 400 }
397 if ((std::abs(p.z()) - fDz) >= -delta && p.z 401 if ((std::abs(p.z()) - fDz) >= -delta && p.z()*v.z() > 0)
398 { 402 {
399 if (calcNorm) 403 if (calcNorm)
400 { 404 {
401 *validNorm = true; 405 *validNorm = true;
402 n->set(0., 0., (p.z() < 0) ? -1. : 1.); 406 n->set(0., 0., (p.z() < 0) ? -1. : 1.);
403 } 407 }
404 return 0.; 408 return 0.;
405 } 409 }
406 410
407 // Find intersection 411 // Find intersection
408 // 412 //
409 G4double vx = v.x(); 413 G4double vx = v.x();
410 G4double tx = (vx == 0) ? DBL_MAX : (std::co 414 G4double tx = (vx == 0) ? DBL_MAX : (std::copysign(fDx,vx) - p.x())/vx;
411 415
412 G4double vy = v.y(); 416 G4double vy = v.y();
413 G4double ty = (vy == 0) ? tx : (std::copysig 417 G4double ty = (vy == 0) ? tx : (std::copysign(fDy,vy) - p.y())/vy;
414 G4double txy = std::min(tx,ty); 418 G4double txy = std::min(tx,ty);
415 419
416 G4double vz = v.z(); 420 G4double vz = v.z();
417 G4double tz = (vz == 0) ? txy : (std::copysi 421 G4double tz = (vz == 0) ? txy : (std::copysign(fDz,vz) - p.z())/vz;
418 G4double tmax = std::min(txy,tz); 422 G4double tmax = std::min(txy,tz);
419 423
420 // Set normal, if required, and return dista 424 // Set normal, if required, and return distance
421 // 425 //
422 if (calcNorm) 426 if (calcNorm)
423 { 427 {
424 *validNorm = true; 428 *validNorm = true;
425 if (tmax == tx) n->set((v.x() < 0) ? 429 if (tmax == tx) n->set((v.x() < 0) ? -1. : 1., 0., 0.);
426 else if (tmax == ty) n->set(0., (v.y() < 0 430 else if (tmax == ty) n->set(0., (v.y() < 0) ? -1. : 1., 0.);
427 else n->set(0., 0., (v.z() 431 else n->set(0., 0., (v.z() < 0) ? -1. : 1.);
428 } 432 }
429 return tmax; 433 return tmax;
430 } 434 }
431 435
432 ////////////////////////////////////////////// 436 ////////////////////////////////////////////////////////////////////////////
433 // 437 //
434 // Calculate exact shortest distance to any bo 438 // Calculate exact shortest distance to any boundary from inside
435 // - if outside return 0 439 // - if outside return 0
436 440
437 G4double G4Box::DistanceToOut(const G4ThreeVec 441 G4double G4Box::DistanceToOut(const G4ThreeVector& p) const
438 { 442 {
439 #ifdef G4CSGDEBUG 443 #ifdef G4CSGDEBUG
440 if( Inside(p) == kOutside ) 444 if( Inside(p) == kOutside )
441 { 445 {
442 std::ostringstream message; 446 std::ostringstream message;
443 G4int oldprc = message.precision(16); 447 G4int oldprc = message.precision(16);
444 message << "Point p is outside (!?) of sol 448 message << "Point p is outside (!?) of solid: " << GetName() << G4endl;
445 message << "Position:\n"; 449 message << "Position:\n";
446 message << " p.x() = " << p.x()/mm << " 450 message << " p.x() = " << p.x()/mm << " mm\n";
447 message << " p.y() = " << p.y()/mm << " 451 message << " p.y() = " << p.y()/mm << " mm\n";
448 message << " p.z() = " << p.z()/mm << " 452 message << " p.z() = " << p.z()/mm << " mm";
449 G4cout.precision(oldprc); 453 G4cout.precision(oldprc);
450 G4Exception("G4Box::DistanceToOut(p)", "Ge 454 G4Exception("G4Box::DistanceToOut(p)", "GeomSolids1002",
451 JustWarning, message ); 455 JustWarning, message );
452 DumpInfo(); 456 DumpInfo();
453 } 457 }
454 #endif 458 #endif
455 G4double dist = std::min(std::min( << 459 G4double dist = std::min(std::min(fDx-std::abs(p.x()),
456 fDx-std::abs(p.x()), << 460 fDy-std::abs(p.y())),
457 fDy-std::abs(p.y())), << 461 fDz-std::abs(p.z()));
458 fDz-std::abs(p.z())); <<
459 return (dist > 0) ? dist : 0.; 462 return (dist > 0) ? dist : 0.;
460 } 463 }
461 464
462 ////////////////////////////////////////////// 465 //////////////////////////////////////////////////////////////////////////
463 // 466 //
464 // GetEntityType 467 // GetEntityType
465 468
466 G4GeometryType G4Box::GetEntityType() const 469 G4GeometryType G4Box::GetEntityType() const
467 { 470 {
468 return {"G4Box"}; << 471 return G4String("G4Box");
469 } <<
470 <<
471 ////////////////////////////////////////////// <<
472 // <<
473 // IsFaceted <<
474 <<
475 G4bool G4Box::IsFaceted() const <<
476 { <<
477 return true; <<
478 } 472 }
479 473
480 ////////////////////////////////////////////// 474 //////////////////////////////////////////////////////////////////////////
481 // 475 //
482 // Stream object contents to an output stream 476 // Stream object contents to an output stream
483 477
484 std::ostream& G4Box::StreamInfo(std::ostream& 478 std::ostream& G4Box::StreamInfo(std::ostream& os) const
485 { 479 {
486 G4long oldprc = os.precision(16); << 480 G4int oldprc = os.precision(16);
487 os << "------------------------------------- 481 os << "-----------------------------------------------------------\n"
488 << " *** Dump for solid - " << GetName 482 << " *** Dump for solid - " << GetName() << " ***\n"
489 << " ================================= 483 << " ===================================================\n"
490 << "Solid type: G4Box\n" 484 << "Solid type: G4Box\n"
491 << "Parameters: \n" 485 << "Parameters: \n"
492 << " half length X: " << fDx/mm << " mm 486 << " half length X: " << fDx/mm << " mm \n"
493 << " half length Y: " << fDy/mm << " mm 487 << " half length Y: " << fDy/mm << " mm \n"
494 << " half length Z: " << fDz/mm << " mm 488 << " half length Z: " << fDz/mm << " mm \n"
495 << "------------------------------------- 489 << "-----------------------------------------------------------\n";
496 os.precision(oldprc); 490 os.precision(oldprc);
497 return os; 491 return os;
498 } 492 }
499 493
500 ////////////////////////////////////////////// 494 //////////////////////////////////////////////////////////////////////////
501 // 495 //
502 // Return a point randomly and uniformly selec << 496 // GetPointOnSurface
>> 497 //
>> 498 // Return a point (G4ThreeVector) randomly and uniformly selected
>> 499 // on the solid surface
503 500
504 G4ThreeVector G4Box::GetPointOnSurface() const 501 G4ThreeVector G4Box::GetPointOnSurface() const
505 { 502 {
506 G4double sxy = fDx*fDy, sxz = fDx*fDz, syz = 503 G4double sxy = fDx*fDy, sxz = fDx*fDz, syz = fDy*fDz;
507 G4double select = (sxy + sxz + syz)*G4QuickR << 504 G4double select = (sxy + sxz + syz)*G4UniformRand();
508 G4double u = 2.*G4QuickRand() - 1.; <<
509 G4double v = 2.*G4QuickRand() - 1.; <<
510 505
511 if (select < sxy) 506 if (select < sxy)
512 return { u*fDx, v*fDy, ((select < 0.5*sxy) << 507 return G4ThreeVector((2.*G4UniformRand() - 1.)*fDx,
513 else if (select < sxy + sxz) << 508 (2.*G4UniformRand() - 1.)*fDy,
514 return { u*fDx, ((select < sxy + 0.5*sxz) << 509 (select < 0.5*sxy) ? -fDz : fDz);
>> 510
>> 511 if (select < sxy + sxz)
>> 512 return G4ThreeVector((2.*G4UniformRand() - 1.)*fDx,
>> 513 (select < sxy + 0.5*sxz) ? -fDy : fDy,
>> 514 (2.*G4UniformRand() - 1.)*fDz);
515 else 515 else
516 return { ((select < sxy + sxz + 0.5*syz) ? << 516 return G4ThreeVector((select < sxy + sxz + 0.5*syz) ? -fDx : fDx,
>> 517 (2.*G4UniformRand() - 1.)*fDy,
>> 518 (2.*G4UniformRand() - 1.)*fDz);
517 } 519 }
518 520
519 ////////////////////////////////////////////// 521 //////////////////////////////////////////////////////////////////////////
520 // 522 //
521 // Make a clone of the object 523 // Make a clone of the object
522 // 524 //
523 G4VSolid* G4Box::Clone() const 525 G4VSolid* G4Box::Clone() const
524 { 526 {
525 return new G4Box(*this); 527 return new G4Box(*this);
526 } 528 }
527 529
528 ////////////////////////////////////////////// 530 //////////////////////////////////////////////////////////////////////////
529 // 531 //
530 // Methods for visualisation 532 // Methods for visualisation
531 533
532 void G4Box::DescribeYourselfTo (G4VGraphicsSce 534 void G4Box::DescribeYourselfTo (G4VGraphicsScene& scene) const
533 { 535 {
534 scene.AddSolid (*this); 536 scene.AddSolid (*this);
535 } 537 }
536 538
537 G4VisExtent G4Box::GetExtent() const 539 G4VisExtent G4Box::GetExtent() const
538 { 540 {
539 return { -fDx, fDx, -fDy, fDy, -fDz, fDz }; << 541 return G4VisExtent (-fDx, fDx, -fDy, fDy, -fDz, fDz);
540 } 542 }
541 543
542 G4Polyhedron* G4Box::CreatePolyhedron () const 544 G4Polyhedron* G4Box::CreatePolyhedron () const
543 { 545 {
544 return new G4PolyhedronBox (fDx, fDy, fDz); 546 return new G4PolyhedronBox (fDx, fDy, fDz);
545 } 547 }
546 #endif 548 #endif
547 549