1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
|
// This file is part of VecGeom and is distributed under the
// conditions in the file LICENSE.txt in the top directory.
// For the full list of authors see CONTRIBUTORS.txt and `git log`.
/// @file source/UnplacedTrd.cpp
/// @author Georgios Bitzes
#include "VecGeom/volumes/UnplacedBox.h"
#include "VecGeom/volumes/UnplacedTrd.h"
#include "VecGeom/volumes/SpecializedTrd.h"
#include "VecGeom/volumes/utilities/GenerationUtilities.h"
#include "VecGeom/base/RNG.h"
#ifdef VECGEOM_ROOT
#include "TGeoTrd1.h"
#include "TGeoTrd2.h"
#endif
#ifdef VECGEOM_GEANT4
#include "G4Trd.hh"
#endif
#ifndef VECCORE_CUDA
#include "VecGeom/volumes/UnplacedImplAs.h"
#endif
#include "VecGeom/management/VolumeFactory.h"
namespace vecgeom {
inline namespace VECGEOM_IMPL_NAMESPACE {
#ifndef VECCORE_CUDA
#ifdef VECGEOM_ROOT
TGeoShape const *UnplacedTrd::ConvertToRoot(char const *label) const
{
if (dy1() == dy2()) {
return new TGeoTrd1(label, dx1(), dx2(), dy1(), dz());
}
return new TGeoTrd2(label, dx1(), dx2(), dy1(), dy2(), dz());
}
#endif
#ifdef VECGEOM_GEANT4
G4VSolid const *UnplacedTrd::ConvertToGeant4(char const *label) const
{
return new G4Trd(label, dx1(), dx2(), dy1(), dy2(), dz());
}
#endif
#endif
template <>
UnplacedTrd *Maker<UnplacedTrd>::MakeInstance(const Precision x1, const Precision x2, const Precision y1,
const Precision y2, const Precision z)
{
#ifndef VECGEOM_NO_SPECIALIZATION
// Trd becomes a box, hence returning a box from the factory
if ((x1 == x2) && (y1 == y2)) {
return new SUnplacedImplAs<SUnplacedTrd<TrdTypes::Trd2>, UnplacedBox>(x1, y1, z);
}
// Specialized Trd of type Trd1
if (y1 == y2) {
return new SUnplacedTrd<TrdTypes::Trd1>(x1, x2, y1, z);
} else {
return new SUnplacedTrd<TrdTypes::Trd2>(x1, x2, y1, y2, z);
}
#else
return new SUnplacedTrd<TrdTypes::UniversalTrd>(x1, x2, y1, y2, z);
#endif
}
// special case Trd1 when dY1 == dY2
template <>
UnplacedTrd *Maker<UnplacedTrd>::MakeInstance(const Precision x1, const Precision x2, const Precision y1,
const Precision z)
{
#ifndef VECGEOM_NO_SPECIALIZATION
// Trd1 becomes a box, hence returning a box from the factory
if (x1 == x2) {
return new SUnplacedImplAs<SUnplacedTrd<TrdTypes::Trd1>, UnplacedBox>(x1, y1, z);
} else {
return new SUnplacedTrd<TrdTypes::Trd1>(x1, x2, y1, z);
}
#else
return new SUnplacedTrd<TrdTypes::UniversalTrd>(x1, x2, y1, z);
#endif
}
VECCORE_ATT_HOST_DEVICE
void UnplacedTrd::Print() const
{
printf("UnplacedTrd {%.2f, %.2f, %.2f, %.2f, %.2f}", dx1(), dx2(), dy1(), dy2(), dz());
}
void UnplacedTrd::Print(std::ostream &os) const
{
os << "UnplacedTrd {" << dx1() << ", " << dx2() << ", " << dy1() << ", " << dy2() << ", " << dz();
}
#ifndef VECCORE_CUDA
SolidMesh *UnplacedTrd::CreateMesh3D(Transformation3D const &trans, size_t nSegments) const
{
SolidMesh *sm = new SolidMesh();
sm->ResetMesh(8, 6);
//-z
Precision x1 = fTrd.fDX1;
Precision y1 = fTrd.fDY1;
//+z
Precision x2 = fTrd.fDX2;
Precision y2 = fTrd.fDY2;
Precision z = fTrd.fDZ;
typedef Vector3D<Precision> Vec_t;
const Vec_t vertices[] = {Vec_t(-x1, -y1, -z), Vec_t(-x1, y1, -z), Vec_t(x1, y1, -z), Vec_t(x1, -y1, -z),
Vec_t(-x2, -y2, z), Vec_t(-x2, y2, z), Vec_t(x2, y2, z), Vec_t(x2, -y2, z)};
sm->SetVertices(vertices, 8);
sm->TransformVertices(trans);
sm->AddPolygon(4, {0, 1, 2, 3}, true);
sm->AddPolygon(4, {4, 7, 6, 5}, true);
sm->AddPolygon(4, {0, 4, 5, 1}, true);
sm->AddPolygon(4, {1, 5, 6, 2}, true);
sm->AddPolygon(4, {2, 6, 7, 3}, true);
sm->AddPolygon(4, {3, 7, 4, 0}, true);
return sm;
}
#endif
Precision UnplacedTrd::Capacity() const
{
return 2 * (fTrd.fDX1 + fTrd.fDX2) * (fTrd.fDY1 + fTrd.fDY2) * fTrd.fDZ +
(2. / 3.) * (fTrd.fDX1 - fTrd.fDX2) * (fTrd.fDY1 - fTrd.fDY2) * fTrd.fDZ;
}
Precision UnplacedTrd::SurfaceArea() const
{
Precision dz = 2 * fTrd.fDZ;
bool xvert = (fTrd.fDX1 == fTrd.fDX2) ? true : false;
Precision SA = 0.0;
// Sum of area for planes Perp. to +X and -X
Precision ht = (xvert) ? dz : Sqrt((fTrd.fDX1 - fTrd.fDX2) * (fTrd.fDX1 - fTrd.fDX2) + dz * dz);
SA += 2.0 * 2.0 * 0.5 * (fTrd.fDY1 + fTrd.fDY2) * ht;
// Sum of area for planes Perp. to +Y and -Y
SA += 2.0 * 2.0 * 0.5 * (fTrd.fDX1 + fTrd.fDX2) * ht; // if xvert then topology forces to become yvert for closing
// Sum of area for top and bottom planes +Z and -Z
SA += 4. * (fTrd.fDX1 * fTrd.fDY1) + 4. * (fTrd.fDX2 * fTrd.fDY2);
return SA;
}
int UnplacedTrd::ChooseSurface() const
{
int choice = 0; // 0-1 = zm, 2-3 = zp, 4-5 = ym, 6-7 = yp, 8-9 = xm, 10-11 = xp
Precision S[12], Stotal = 0.0;
S[0] = S[1] = GetMinusZArea() / 2.0;
S[2] = S[3] = GetPlusZArea() / 2.0;
Precision yarea = GetPlusYArea() / (fTrd.fDX1 + fTrd.fDX2);
S[4] = S[6] = yarea * fTrd.fDX1;
S[5] = S[7] = yarea * fTrd.fDX2;
Precision xarea = GetPlusXArea() / (fTrd.fDY1 + fTrd.fDY2);
S[8] = S[10] = xarea * fTrd.fDY1;
S[9] = S[11] = xarea * fTrd.fDY2;
for (int i = 0; i < 12; ++i)
Stotal += S[i];
// random value to choose triangle to place the point
Precision rand = RNG::Instance().uniform() * Stotal;
while (rand > S[choice])
rand -= S[choice], choice++;
assert(choice < 12);
return choice;
}
Vector3D<Precision> UnplacedTrd::SamplePointOnSurface() const
// /
// p6-------p7 /
// / | | \ /
// / p4-------p5 \ /
// / / \ \ /
// p2--/-----------\--p3 /
// | / \ | /
// |/ \| /
// p0-----------------p1 /
// /
{
Vector3D<Precision> A, B, C;
int surface = ChooseSurface();
switch (surface) {
case 0: // -Z face, 1st triangle (p0-p1-p2)
A.Set(-fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
B.Set(fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
C.Set(-fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
break;
case 1: // -Z face, 2nd triangle (p3-p1-p2)
A.Set(fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
B.Set(fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
C.Set(-fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
break;
case 2: // +Z face, 1st triangle (p4-p5-p6)
A.Set(-fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
B.Set(fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
C.Set(-fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
break;
case 3: // +Z face, 2nd triangle (p7-p5-p6)
A.Set(fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
B.Set(fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
C.Set(-fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
break;
case 4: // -Y face, 1st triangle (p0-p1-p4)
A.Set(-fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
B.Set(fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
C.Set(-fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
break;
case 5: // -Y face, 2nd triangle (p5-p1-p4)
A.Set(fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
B.Set(fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
C.Set(-fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
break;
case 6: // +Y face, 1st triangle (p3-p2-p7)
A.Set(fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
B.Set(-fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
C.Set(fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
break;
case 7: // +Y face, 2nd triangle (p6-p2-p7)
A.Set(-fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
B.Set(-fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
C.Set(fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
break;
case 8: // -X face, 1st triangle (p0-p4-p2)
A.Set(-fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
B.Set(-fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
C.Set(-fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
break;
case 9: // -X face, 2nd triangle (p6-p4-p2)
A.Set(-fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
B.Set(-fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
C.Set(-fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
break;
case 10: // +X face, 1st triangle (p3-p7-p1)
A.Set(fTrd.fDX1, fTrd.fDY1, -fTrd.fDZ);
B.Set(fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
C.Set(fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
break;
case 11: // +X face, 2nd triangle (p3-p7-p1)
A.Set(fTrd.fDX2, -fTrd.fDY2, fTrd.fDZ);
B.Set(fTrd.fDX2, fTrd.fDY2, fTrd.fDZ);
C.Set(fTrd.fDX1, -fTrd.fDY1, -fTrd.fDZ);
break;
}
Precision r1 = RNG::Instance().uniform();
Precision r2 = RNG::Instance().uniform();
if (r1 + r2 > 1.0) {
r1 = 1.0 - r1;
r2 = 1.0 - r2;
}
return A + r1 * (B - A) + r2 * (C - A);
}
VECCORE_ATT_HOST_DEVICE
bool UnplacedTrd::Normal(Vector3D<Precision> const &point, Vector3D<Precision> &norm) const
{
using vecCore::math::Abs;
using vecCore::math::Min;
int noSurfaces = 0;
Vector3D<Precision> sumnorm(0., 0., 0.), vecnorm(0., 0., 0.);
Precision distz;
distz = Abs(Abs(point[2]) - fTrd.fDZ);
Precision xnorm = 1.0 / sqrt(4 * fTrd.fDZ * fTrd.fDZ + (fTrd.fDX2 - fTrd.fDX1) * (fTrd.fDX2 - fTrd.fDX1));
Precision ynorm = 1.0 / sqrt(4 * fTrd.fDZ * fTrd.fDZ + (fTrd.fDY2 - fTrd.fDY1) * (fTrd.fDY2 - fTrd.fDY1));
Precision distmx =
-2.0 * fTrd.fDZ * point[0] - (fTrd.fDX2 - fTrd.fDX1) * point[2] - fTrd.fDZ * (fTrd.fDX1 + fTrd.fDX2);
distmx *= xnorm;
Precision distpx =
2.0 * fTrd.fDZ * point[0] - (fTrd.fDX2 - fTrd.fDX1) * point[2] - fTrd.fDZ * (fTrd.fDX1 + fTrd.fDX2);
distpx *= xnorm;
Precision distmy =
-2.0 * fTrd.fDZ * point[1] - (fTrd.fDY2 - fTrd.fDY1) * point[2] - fTrd.fDZ * (fTrd.fDY1 + fTrd.fDY2);
distmy *= ynorm;
Precision distpy =
2.0 * fTrd.fDZ * point[1] - (fTrd.fDY2 - fTrd.fDY1) * point[2] - fTrd.fDZ * (fTrd.fDY1 + fTrd.fDY2);
distpy *= ynorm;
Precision safmin = Min(Abs(distmx), Abs(distpx));
safmin = Min(safmin, Min(Abs(distmy), Abs(distpy)));
safmin = Min(safmin, Abs(distz));
bool valid = safmin <= kHalfTolerance;
if (Abs(distmx) - safmin <= kHalfTolerance) {
noSurfaces++;
sumnorm += Vector3D<Precision>(-2.0 * fTrd.fDZ, 0.0, -(fTrd.fDX2 - fTrd.fDX1)) * xnorm;
}
if (Abs(distpx) - safmin <= kHalfTolerance) {
noSurfaces++;
sumnorm += Vector3D<Precision>(2.0 * fTrd.fDZ, 0.0, -(fTrd.fDX2 - fTrd.fDX1)) * xnorm;
}
if (Abs(distpy) - safmin <= kHalfTolerance) {
noSurfaces++;
sumnorm += Vector3D<Precision>(0.0, 2.0 * fTrd.fDZ, -(fTrd.fDY2 - fTrd.fDY1)) * ynorm;
}
if (Abs(distmy) - safmin <= kHalfTolerance) {
noSurfaces++;
sumnorm += Vector3D<Precision>(0.0, -2.0 * fTrd.fDZ, -(fTrd.fDY2 - fTrd.fDY1)) * ynorm;
}
if (Abs(distz) - safmin <= kHalfTolerance) {
noSurfaces++;
if (point[2] >= 0.)
sumnorm += Vector3D<Precision>(0., 0., 1.);
else
sumnorm += Vector3D<Precision>(0., 0., -1.);
}
if (noSurfaces == 0) {
#ifdef UDEBUG
UUtils::Exception("UnplacedTrapezoid::SurfaceNormal(point)", "GeomSolids1002", Warning, 1,
"Point is not on surface.");
#endif
// vecnorm = ApproxSurfaceNormal( Vector3D<Precision>(point[0],point[1],point[2]) );
vecnorm =
Vector3D<Precision>(0., 0., 1.); // any plane will do it, since false is returned, so save the CPU cycles...
} else if (noSurfaces == 1)
vecnorm = sumnorm;
else
vecnorm = sumnorm.Unit();
norm[0] = vecnorm[0];
norm[1] = vecnorm[1];
norm[2] = vecnorm[2];
return valid;
}
std::ostream &UnplacedTrd::StreamInfo(std::ostream &os) const
{
int oldprc = os.precision(16);
os << "-----------------------------------------------------------\n"
<< " *** Dump for solid - " << GetEntityType() << " ***\n"
<< " ===================================================\n"
<< " Solid type: Trd\n"
<< " Parameters: \n"
<< " half lengths X1,X2: " << fTrd.fDX1 << "mm, " << fTrd.fDX2 << "mm \n"
<< " half lengths Y1,Y2: " << fTrd.fDY1 << "mm, " << fTrd.fDY2 << "mm \n"
<< " half length Z: " << fTrd.fDZ << "mm \n"
<< "-----------------------------------------------------------\n";
os.precision(oldprc);
return os;
}
#ifdef VECGEOM_CUDA_INTERFACE
DevicePtr<cuda::VUnplacedVolume> UnplacedTrd::CopyToGpu(DevicePtr<cuda::VUnplacedVolume> const in_gpu_ptr) const
{
return CopyToGpuImpl<SUnplacedTrd<TrdTypes::UniversalTrd>>(in_gpu_ptr, dx1(), dx2(), dy1(), dy2(), dz());
}
DevicePtr<cuda::VUnplacedVolume> UnplacedTrd::CopyToGpu() const
{
return CopyToGpuImpl<SUnplacedTrd<TrdTypes::UniversalTrd>>();
}
#endif // VECGEOM_CUDA_INTERFACE
} // namespace VECGEOM_IMPL_NAMESPACE
#ifdef VECCORE_CUDA
namespace cxx {
template size_t DevicePtr<cuda::SUnplacedTrd<cuda::TrdTypes::UniversalTrd>>::SizeOf();
template void DevicePtr<cuda::SUnplacedTrd<cuda::TrdTypes::UniversalTrd>>::Construct(
const Precision dx1, const Precision dx2, const Precision dy1, const Precision dy2, const Precision z) const;
template void DevicePtr<cuda::SUnplacedTrd<cuda::TrdTypes::UniversalTrd>>::Construct(const Precision dx1,
const Precision dx2,
const Precision dy1,
const Precision z) const;
} // namespace cxx
#endif
} // namespace vecgeom
|
