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