Geant4 11.1.1
Toolkit for the simulation of the passage of particles through matter
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G4UPolyhedra.cc
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25//
26// Implementation of G4UPolyhedra wrapper class
27//
28// 31.10.13 G.Cosmo, CERN
29// --------------------------------------------------------------------
30
31#include "G4Polyhedra.hh"
32#include "G4UPolyhedra.hh"
33
34#if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )
35
36#include "G4GeomTools.hh"
37#include "G4GeometryTolerance.hh"
38#include "G4AffineTransform.hh"
39#include "G4VPVParameterisation.hh"
40#include "G4BoundingEnvelope.hh"
41
42using namespace CLHEP;
43
44////////////////////////////////////////////////////////////////////////
45//
46// Constructor (GEANT3 style parameters)
47//
48// GEANT3 PGON radii are specified in the distance to the norm of each face.
49//
50G4UPolyhedra::G4UPolyhedra(const G4String& name,
51 G4double phiStart,
52 G4double phiTotal,
53 G4int numSide,
54 G4int numZPlanes,
55 const G4double zPlane[],
56 const G4double rInner[],
57 const G4double rOuter[] )
58 : Base_t(name, phiStart, phiTotal, numSide,
59 numZPlanes, zPlane, rInner, rOuter)
60{
61 fGenericPgon = false;
62 SetOriginalParameters();
63 wrStart = phiStart;
64 while (wrStart < 0)
65 {
66 wrStart += twopi;
67 }
68 wrDelta = phiTotal;
69 if (wrDelta <= 0. || wrDelta >= twopi*(1-DBL_EPSILON))
70 {
71 wrDelta = twopi;
72 }
73 wrNumSide = numSide;
74 G4double convertRad = 1./std::cos(0.5*wrDelta/wrNumSide);
75 rzcorners.resize(0);
76 for (G4int i=0; i<numZPlanes; ++i)
77 {
78 G4double z = zPlane[i];
79 G4double r = rOuter[i]*convertRad;
80 rzcorners.push_back(G4TwoVector(r,z));
81 }
82 for (G4int i=numZPlanes-1; i>=0; --i)
83 {
84 G4double z = zPlane[i];
85 G4double r = rInner[i]*convertRad;
86 rzcorners.push_back(G4TwoVector(r,z));
87 }
88 std::vector<G4int> iout;
89 G4GeomTools::RemoveRedundantVertices(rzcorners,iout,2*kCarTolerance);
90}
91
92
93////////////////////////////////////////////////////////////////////////
94//
95// Constructor (generic parameters)
96//
97G4UPolyhedra::G4UPolyhedra(const G4String& name,
98 G4double phiStart,
99 G4double phiTotal,
100 G4int numSide,
101 G4int numRZ,
102 const G4double r[],
103 const G4double z[] )
104 : Base_t(name, phiStart, phiTotal, numSide, numRZ, r, z)
105{
106 fGenericPgon = true;
107 SetOriginalParameters();
108 wrStart = phiStart;
109 while (wrStart < 0.)
110 {
111 wrStart += twopi;
112 }
113 wrDelta = phiTotal;
114 if (wrDelta <= 0. || wrDelta >= twopi*(1-DBL_EPSILON))
115 {
116 wrDelta = twopi;
117 }
118 wrNumSide = numSide;
119 rzcorners.resize(0);
120 for (G4int i=0; i<numRZ; ++i)
121 {
122 rzcorners.push_back(G4TwoVector(r[i],z[i]));
123 }
124 std::vector<G4int> iout;
125 G4GeomTools::RemoveRedundantVertices(rzcorners,iout,2*kCarTolerance);
126}
127
128
129////////////////////////////////////////////////////////////////////////
130//
131// Fake default constructor - sets only member data and allocates memory
132// for usage restricted to object persistency.
133//
134G4UPolyhedra::G4UPolyhedra( __void__& a )
135 : Base_t(a)
136{
137}
138
139
140////////////////////////////////////////////////////////////////////////
141//
142// Destructor
143//
144G4UPolyhedra::~G4UPolyhedra()
145{
146}
147
148
149////////////////////////////////////////////////////////////////////////
150//
151// Copy constructor
152//
153G4UPolyhedra::G4UPolyhedra( const G4UPolyhedra& source )
154 : Base_t( source )
155{
156 fGenericPgon = source.fGenericPgon;
157 fOriginalParameters = source.fOriginalParameters;
158 wrStart = source.wrStart;
159 wrDelta = source.wrDelta;
160 wrNumSide = source.wrNumSide;
161 rzcorners = source.rzcorners;
162}
163
164
165////////////////////////////////////////////////////////////////////////
166//
167// Assignment operator
168//
169G4UPolyhedra& G4UPolyhedra::operator=( const G4UPolyhedra& source )
170{
171 if (this == &source) return *this;
172
173 Base_t::operator=( source );
174 fGenericPgon = source.fGenericPgon;
175 fOriginalParameters = source.fOriginalParameters;
176 wrStart = source.wrStart;
177 wrDelta = source.wrDelta;
178 wrNumSide = source.wrNumSide;
179 rzcorners = source.rzcorners;
180
181 return *this;
182}
183
184
185////////////////////////////////////////////////////////////////////////
186//
187// Accessors & modifiers
188//
189G4int G4UPolyhedra::GetNumSide() const
190{
191 return wrNumSide;
192}
193G4double G4UPolyhedra::GetStartPhi() const
194{
195 return wrStart;
196}
197G4double G4UPolyhedra::GetEndPhi() const
198{
199 return (wrStart + wrDelta);
200}
201G4double G4UPolyhedra::GetSinStartPhi() const
202{
203 G4double phi = GetStartPhi();
204 return std::sin(phi);
205}
206G4double G4UPolyhedra::GetCosStartPhi() const
207{
208 G4double phi = GetStartPhi();
209 return std::cos(phi);
210}
211G4double G4UPolyhedra::GetSinEndPhi() const
212{
213 G4double phi = GetEndPhi();
214 return std::sin(phi);
215}
216G4double G4UPolyhedra::GetCosEndPhi() const
217{
218 G4double phi = GetEndPhi();
219 return std::cos(phi);
220}
221G4bool G4UPolyhedra::IsOpen() const
222{
223 return (wrDelta < twopi);
224}
225G4bool G4UPolyhedra::IsGeneric() const
226{
227 return fGenericPgon;
228}
229G4int G4UPolyhedra::GetNumRZCorner() const
230{
231 return rzcorners.size();
232}
233G4PolyhedraSideRZ G4UPolyhedra::GetCorner(G4int index) const
234{
235 G4TwoVector rz = rzcorners.at(index);
236 G4PolyhedraSideRZ psiderz = { rz.x(), rz.y() };
237
238 return psiderz;
239}
240G4PolyhedraHistorical* G4UPolyhedra::GetOriginalParameters() const
241{
242 return new G4PolyhedraHistorical(fOriginalParameters);
243}
244void G4UPolyhedra::SetOriginalParameters()
245{
246 G4double startPhi = GetPhiStart();
247 G4double deltaPhi = GetPhiDelta();
248 G4int numPlanes = GetZSegmentCount() + 1;
249 G4int numSides = GetSideCount();
250
251 fOriginalParameters.Start_angle = startPhi;
252 fOriginalParameters.Opening_angle = deltaPhi;
253 fOriginalParameters.Num_z_planes = numPlanes;
254 fOriginalParameters.numSide = numSides;
255
256 delete [] fOriginalParameters.Z_values;
257 delete [] fOriginalParameters.Rmin;
258 delete [] fOriginalParameters.Rmax;
259 fOriginalParameters.Z_values = new G4double[numPlanes];
260 fOriginalParameters.Rmin = new G4double[numPlanes];
261 fOriginalParameters.Rmax = new G4double[numPlanes];
262
263 G4double convertRad = fGenericPgon
264 ? 1.0 : std::cos(0.5*deltaPhi/numSides);
265 for (G4int i=0; i<numPlanes; ++i)
266 {
267 fOriginalParameters.Z_values[i] = GetZPlanes()[i];
268 fOriginalParameters.Rmax[i] = GetRMax()[i]/convertRad;
269 fOriginalParameters.Rmin[i] = GetRMin()[i]/convertRad;
270 }
271}
272void G4UPolyhedra::SetOriginalParameters(G4PolyhedraHistorical* pars)
273{
274 fOriginalParameters = *pars;
275 fRebuildPolyhedron = true;
276 Reset();
277}
278
279G4bool G4UPolyhedra::Reset()
280{
281 if (fGenericPgon)
282 {
283 std::ostringstream message;
284 message << "Solid " << GetName() << " built using generic construct."
285 << G4endl << "Not applicable to the generic construct !";
286 G4Exception("G4UPolyhedra::Reset()", "GeomSolids1001",
287 JustWarning, message, "Parameters NOT reset.");
288 return true; // error code set
289 }
290
291 //
292 // Rebuild polyhedra based on original parameters
293 //
294 wrStart = fOriginalParameters.Start_angle;
295 while (wrStart < 0.)
296 {
297 wrStart += twopi;
298 }
299 wrDelta = fOriginalParameters.Opening_angle;
300 if (wrDelta <= 0. || wrDelta >= twopi*(1-DBL_EPSILON))
301 {
302 wrDelta = twopi;
303 }
304 wrNumSide = fOriginalParameters.numSide;
305 rzcorners.resize(0);
306 for (G4int i=0; i<fOriginalParameters.Num_z_planes; ++i)
307 {
308 G4double z = fOriginalParameters.Z_values[i];
309 G4double r = fOriginalParameters.Rmax[i];
310 rzcorners.push_back(G4TwoVector(r,z));
311 }
312 for (G4int i=fOriginalParameters.Num_z_planes-1; i>=0; --i)
313 {
314 G4double z = fOriginalParameters.Z_values[i];
315 G4double r = fOriginalParameters.Rmin[i];
316 rzcorners.push_back(G4TwoVector(r,z));
317 }
318 std::vector<G4int> iout;
319 G4GeomTools::RemoveRedundantVertices(rzcorners,iout,2*kCarTolerance);
320
321 return false; // error code unset
322}
323
324
325////////////////////////////////////////////////////////////////////////
326//
327// Dispatch to parameterisation for replication mechanism dimension
328// computation & modification.
329//
330void G4UPolyhedra::ComputeDimensions(G4VPVParameterisation* p,
331 const G4int n,
332 const G4VPhysicalVolume* pRep)
333{
334 p->ComputeDimensions(*(G4Polyhedra*)this,n,pRep);
335}
336
337
338//////////////////////////////////////////////////////////////////////////
339//
340// Make a clone of the object
341
342G4VSolid* G4UPolyhedra::Clone() const
343{
344 return new G4UPolyhedra(*this);
345}
346
347
348//////////////////////////////////////////////////////////////////////////
349//
350// Get bounding box
351
352void G4UPolyhedra::BoundingLimits(G4ThreeVector& pMin,
353 G4ThreeVector& pMax) const
354{
355 static G4bool checkBBox = true;
356 static G4bool checkPhi = true;
357
358 G4double rmin = kInfinity, rmax = -kInfinity;
359 G4double zmin = kInfinity, zmax = -kInfinity;
360 for (G4int i=0; i<GetNumRZCorner(); ++i)
361 {
362 G4PolyhedraSideRZ corner = GetCorner(i);
363 if (corner.r < rmin) rmin = corner.r;
364 if (corner.r > rmax) rmax = corner.r;
365 if (corner.z < zmin) zmin = corner.z;
366 if (corner.z > zmax) zmax = corner.z;
367 }
368
369 G4double sphi = GetStartPhi();
370 G4double ephi = GetEndPhi();
371 G4double dphi = IsOpen() ? ephi-sphi : twopi;
372 G4int ksteps = GetNumSide();
373 G4double astep = dphi/ksteps;
374 G4double sinStep = std::sin(astep);
375 G4double cosStep = std::cos(astep);
376
377 G4double sinCur = GetSinStartPhi();
378 G4double cosCur = GetCosStartPhi();
379 if (!IsOpen()) rmin = 0.;
380 G4double xmin = rmin*cosCur, xmax = xmin;
381 G4double ymin = rmin*sinCur, ymax = ymin;
382 for (G4int k=0; k<ksteps+1; ++k)
383 {
384 G4double x = rmax*cosCur;
385 if (x < xmin) xmin = x;
386 if (x > xmax) xmax = x;
387 G4double y = rmax*sinCur;
388 if (y < ymin) ymin = y;
389 if (y > ymax) ymax = y;
390 if (rmin > 0.)
391 {
392 G4double xx = rmin*cosCur;
393 if (xx < xmin) xmin = xx;
394 if (xx > xmax) xmax = xx;
395 G4double yy = rmin*sinCur;
396 if (yy < ymin) ymin = yy;
397 if (yy > ymax) ymax = yy;
398 }
399 G4double sinTmp = sinCur;
400 sinCur = sinCur*cosStep + cosCur*sinStep;
401 cosCur = cosCur*cosStep - sinTmp*sinStep;
402 }
403 pMin.set(xmin,ymin,zmin);
404 pMax.set(xmax,ymax,zmax);
405
406 // Check correctness of the bounding box
407 //
408 if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
409 {
410 std::ostringstream message;
411 message << "Bad bounding box (min >= max) for solid: "
412 << GetName() << " !"
413 << "\npMin = " << pMin
414 << "\npMax = " << pMax;
415 G4Exception("G4UPolyhedra::BoundingLimits()", "GeomMgt0001",
416 JustWarning, message);
417 StreamInfo(G4cout);
418 }
419
420 // Check consistency of bounding boxes
421 //
422 if (checkBBox)
423 {
424 U3Vector vmin, vmax;
425 Extent(vmin,vmax);
426 if (std::abs(pMin.x()-vmin.x()) > kCarTolerance ||
427 std::abs(pMin.y()-vmin.y()) > kCarTolerance ||
428 std::abs(pMin.z()-vmin.z()) > kCarTolerance ||
429 std::abs(pMax.x()-vmax.x()) > kCarTolerance ||
430 std::abs(pMax.y()-vmax.y()) > kCarTolerance ||
431 std::abs(pMax.z()-vmax.z()) > kCarTolerance)
432 {
433 std::ostringstream message;
434 message << "Inconsistency in bounding boxes for solid: "
435 << GetName() << " !"
436 << "\nBBox min: wrapper = " << pMin << " solid = " << vmin
437 << "\nBBox max: wrapper = " << pMax << " solid = " << vmax;
438 G4Exception("G4UPolyhedra::BoundingLimits()", "GeomMgt0001",
439 JustWarning, message);
440 checkBBox = false;
441 }
442 }
443
444 // Check consistency of angles
445 //
446 if (checkPhi)
447 {
448 if (GetStartPhi() != GetPhiStart() ||
449 GetEndPhi() != GetPhiEnd() ||
450 GetNumSide() != GetSideCount() ||
451 IsOpen() != (Base_t::GetPhiDelta() < twopi))
452 {
453 std::ostringstream message;
454 message << "Inconsistency in Phi angles or # of sides for solid: "
455 << GetName() << " !"
456 << "\nPhi start : wrapper = " << GetStartPhi()
457 << " solid = " << GetPhiStart()
458 << "\nPhi end : wrapper = " << GetEndPhi()
459 << " solid = " << GetPhiEnd()
460 << "\nPhi # sides: wrapper = " << GetNumSide()
461 << " solid = " << GetSideCount()
462 << "\nPhi is open: wrapper = " << (IsOpen() ? "true" : "false")
463 << " solid = "
464 << ((Base_t::GetPhiDelta() < twopi) ? "true" : "false");
465 G4Exception("G4UPolyhedra::BoundingLimits()", "GeomMgt0001",
466 JustWarning, message);
467 checkPhi = false;
468 }
469 }
470}
471
472//////////////////////////////////////////////////////////////////////////
473//
474// Calculate extent under transform and specified limit
475
476G4bool
477G4UPolyhedra::CalculateExtent(const EAxis pAxis,
478 const G4VoxelLimits& pVoxelLimit,
479 const G4AffineTransform& pTransform,
480 G4double& pMin, G4double& pMax) const
481{
482 G4ThreeVector bmin, bmax;
483 G4bool exist;
484
485 // Check bounding box (bbox)
486 //
487 BoundingLimits(bmin,bmax);
488 G4BoundingEnvelope bbox(bmin,bmax);
489#ifdef G4BBOX_EXTENT
490 if (true) return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
491#endif
492 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVoxelLimit,pTransform,pMin,pMax))
493 {
494 return exist = (pMin < pMax) ? true : false;
495 }
496
497 // To find the extent, RZ contour of the polycone is subdivided
498 // in triangles. The extent is calculated as cumulative extent of
499 // all sub-polycones formed by rotation of triangles around Z
500 //
501 G4TwoVectorList contourRZ;
502 G4TwoVectorList triangles;
503 std::vector<G4int> iout;
504 G4double eminlim = pVoxelLimit.GetMinExtent(pAxis);
505 G4double emaxlim = pVoxelLimit.GetMaxExtent(pAxis);
506
507 // get RZ contour, ensure anticlockwise order of corners
508 for (G4int i=0; i<GetNumRZCorner(); ++i)
509 {
510 G4PolyhedraSideRZ corner = GetCorner(i);
511 contourRZ.push_back(G4TwoVector(corner.r,corner.z));
512 }
513 G4GeomTools::RemoveRedundantVertices(contourRZ,iout,2*kCarTolerance);
514 G4double area = G4GeomTools::PolygonArea(contourRZ);
515 if (area < 0.) std::reverse(contourRZ.begin(),contourRZ.end());
516
517 // triangulate RZ countour
518 if (!G4GeomTools::TriangulatePolygon(contourRZ,triangles))
519 {
520 std::ostringstream message;
521 message << "Triangulation of RZ contour has failed for solid: "
522 << GetName() << " !"
523 << "\nExtent has been calculated using boundary box";
524 G4Exception("G4UPolyhedra::CalculateExtent()",
525 "GeomMgt1002",JustWarning,message);
526 return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
527 }
528
529 // set trigonometric values
530 G4double sphi = GetStartPhi();
531 G4double ephi = GetEndPhi();
532 G4double dphi = IsOpen() ? ephi-sphi : twopi;
533 G4int ksteps = GetNumSide();
534 G4double astep = dphi/ksteps;
535 G4double sinStep = std::sin(astep);
536 G4double cosStep = std::cos(astep);
537 G4double sinStart = GetSinStartPhi();
538 G4double cosStart = GetCosStartPhi();
539
540 // allocate vector lists
541 std::vector<const G4ThreeVectorList *> polygons;
542 polygons.resize(ksteps+1);
543 for (G4int k=0; k<ksteps+1; ++k)
544 {
545 polygons[k] = new G4ThreeVectorList(3);
546 }
547
548 // main loop along triangles
549 pMin = kInfinity;
550 pMax = -kInfinity;
551 G4int ntria = triangles.size()/3;
552 for (G4int i=0; i<ntria; ++i)
553 {
554 G4double sinCur = sinStart;
555 G4double cosCur = cosStart;
556 G4int i3 = i*3;
557 for (G4int k=0; k<ksteps+1; ++k) // rotate triangle
558 {
559 G4ThreeVectorList* ptr = const_cast<G4ThreeVectorList*>(polygons[k]);
560 G4ThreeVectorList::iterator iter = ptr->begin();
561 iter->set(triangles[i3+0].x()*cosCur,
562 triangles[i3+0].x()*sinCur,
563 triangles[i3+0].y());
564 iter++;
565 iter->set(triangles[i3+1].x()*cosCur,
566 triangles[i3+1].x()*sinCur,
567 triangles[i3+1].y());
568 iter++;
569 iter->set(triangles[i3+2].x()*cosCur,
570 triangles[i3+2].x()*sinCur,
571 triangles[i3+2].y());
572
573 G4double sinTmp = sinCur;
574 sinCur = sinCur*cosStep + cosCur*sinStep;
575 cosCur = cosCur*cosStep - sinTmp*sinStep;
576 }
577
578 // set sub-envelope and adjust extent
579 G4double emin,emax;
580 G4BoundingEnvelope benv(polygons);
581 if (!benv.CalculateExtent(pAxis,pVoxelLimit,pTransform,emin,emax)) continue;
582 if (emin < pMin) pMin = emin;
583 if (emax > pMax) pMax = emax;
584 if (eminlim > pMin && emaxlim < pMax) break; // max possible extent
585 }
586 // free memory
587 for (G4int k=0; k<ksteps+1; ++k) { delete polygons[k]; polygons[k]=0;}
588 return (pMin < pMax);
589}
590
591
592////////////////////////////////////////////////////////////////////////
593//
594// CreatePolyhedron
595//
596G4Polyhedron* G4UPolyhedra::CreatePolyhedron() const
597{
598 return new G4PolyhedronPgon(wrStart, wrDelta, wrNumSide, rzcorners);
599}
600
601#endif // G4GEOM_USE_USOLIDS
kCarTolerance
const G4double kCarTolerance
Definition: G4BoundingEnvelope.cc:38
G4ThreeVectorList
std::vector< G4ThreeVector > G4ThreeVectorList
Definition: G4BoundingEnvelope.hh:54
JustWarning
@ JustWarning
Definition: G4ExceptionSeverity.hh:65
G4Exception
void G4Exception(const char *originOfException, const char *exceptionCode, G4ExceptionSeverity severity, const char *description)
Definition: G4Exception.cc:59
G4TwoVectorList
std::vector< G4TwoVector > G4TwoVectorList
Definition: G4GeomTools.hh:42
G4TwoVector
CLHEP::Hep2Vector G4TwoVector
Definition: G4TwoVector.hh:36
G4double
double G4double
Definition: G4Types.hh:83
G4bool
bool G4bool
Definition: G4Types.hh:86
G4int
int G4int
Definition: G4Types.hh:85
G4endl
#define G4endl
Definition: G4ios.hh:57
G4cout
G4GLOB_DLL std::ostream G4cout
CLHEP::Hep2Vector::x
double x() const
CLHEP::Hep2Vector::y
double y() const
CLHEP::Hep3Vector::z
double z() const
CLHEP::Hep3Vector::x
double x() const
CLHEP::Hep3Vector::y
double y() const
CLHEP::Hep3Vector::set
void set(double x, double y, double z)
G4GeomTools::TriangulatePolygon
static G4bool TriangulatePolygon(const G4TwoVectorList &polygon, G4TwoVectorList &result)
Definition: G4GeomTools.cc:193
G4GeomTools::RemoveRedundantVertices
static void RemoveRedundantVertices(G4TwoVectorList &polygon, std::vector< G4int > &iout, G4double tolerance=0.0)
Definition: G4GeomTools.cc:305
G4GeomTools::PolygonArea
static G4double PolygonArea(const G4TwoVectorList &polygon)
Definition: G4GeomTools.cc:76
G4VPVParameterisation::ComputeDimensions
virtual void ComputeDimensions(G4Box &, const G4int, const G4VPhysicalVolume *) const
Definition: G4VPVParameterisation.hh:89
G4VoxelLimits::GetMinExtent
G4double GetMinExtent(const EAxis pAxis) const
G4VoxelLimits::GetMaxExtent
G4double GetMaxExtent(const EAxis pAxis) const
EAxis
EAxis
Definition: geomdefs.hh:54
CLHEP
Definition: DoubConv.h:17
G4InuclParticleNames::name
const char * name(G4int ptype)
Definition: G4InuclParticleNames.hh:76
DBL_EPSILON
#define DBL_EPSILON
Definition: templates.hh:66