Geant4 11.1.1
Toolkit for the simulation of the passage of particles through matter
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G4UPolycone.cc
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24// ********************************************************************
25//
26// Implementation of G4UPolycone wrapper class
27//
28// 31.10.13 G.Cosmo, CERN
29// --------------------------------------------------------------------
30
31#include "G4Polycone.hh"
32#include "G4UPolycone.hh"
33
34#if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )
35
36#include "G4GeomTools.hh"
37#include "G4AffineTransform.hh"
38#include "G4VPVParameterisation.hh"
39#include "G4BoundingEnvelope.hh"
40
41using namespace CLHEP;
42
43////////////////////////////////////////////////////////////////////////
44//
45// Constructor (GEANT3 style parameters)
46//
47G4UPolycone::G4UPolycone( const G4String& name,
48 G4double phiStart,
49 G4double phiTotal,
50 G4int numZPlanes,
51 const G4double zPlane[],
52 const G4double rInner[],
53 const G4double rOuter[] )
54 : Base_t(name, phiStart, phiTotal, numZPlanes, zPlane, rInner, rOuter)
55{
56 fGenericPcon = false;
57 SetOriginalParameters();
58 wrStart = phiStart;
59 while (wrStart < 0)
60 {
61 wrStart += twopi;
62 }
63 wrDelta = phiTotal;
64 if (wrDelta <= 0 || wrDelta >= twopi*(1-DBL_EPSILON))
65 {
66 wrStart = 0;
67 wrDelta = twopi;
68 }
69 rzcorners.resize(0);
70 for (G4int i=0; i<numZPlanes; ++i)
71 {
72 G4double z = zPlane[i];
73 G4double r = rOuter[i];
74 rzcorners.push_back(G4TwoVector(r,z));
75 }
76 for (G4int i=numZPlanes-1; i>=0; --i)
77 {
78 G4double z = zPlane[i];
79 G4double r = rInner[i];
80 rzcorners.push_back(G4TwoVector(r,z));
81 }
82 std::vector<G4int> iout;
83 G4GeomTools::RemoveRedundantVertices(rzcorners,iout,2*kCarTolerance);
84}
85
86
87////////////////////////////////////////////////////////////////////////
88//
89// Constructor (generic parameters)
90//
91G4UPolycone::G4UPolycone(const G4String& name,
92 G4double phiStart,
93 G4double phiTotal,
94 G4int numRZ,
95 const G4double r[],
96 const G4double z[] )
97 : Base_t(name, phiStart, phiTotal, numRZ, r, z)
98{
99 fGenericPcon = true;
100 SetOriginalParameters();
101 wrStart = phiStart; while (wrStart < 0) wrStart += twopi;
102 wrDelta = phiTotal;
103 if (wrDelta <= 0 || wrDelta >= twopi*(1-DBL_EPSILON))
104 {
105 wrStart = 0;
106 wrDelta = twopi;
107 }
108 rzcorners.resize(0);
109 for (G4int i=0; i<numRZ; ++i)
110 {
111 rzcorners.push_back(G4TwoVector(r[i],z[i]));
112 }
113 std::vector<G4int> iout;
114 G4GeomTools::RemoveRedundantVertices(rzcorners,iout,2*kCarTolerance);
115}
116
117
118////////////////////////////////////////////////////////////////////////
119//
120// Fake default constructor - sets only member data and allocates memory
121// for usage restricted to object persistency.
122//
123G4UPolycone::G4UPolycone( __void__& a )
124 : Base_t(a)
125{
126}
127
128
129////////////////////////////////////////////////////////////////////////
130//
131// Destructor
132//
133G4UPolycone::~G4UPolycone()
134{
135}
136
137
138////////////////////////////////////////////////////////////////////////
139//
140// Copy constructor
141//
142G4UPolycone::G4UPolycone( const G4UPolycone& source )
143 : Base_t( source )
144{
145 fGenericPcon = source.fGenericPcon;
146 fOriginalParameters = source.fOriginalParameters;
147 wrStart = source.wrStart;
148 wrDelta = source.wrDelta;
149 rzcorners = source.rzcorners;
150}
151
152
153////////////////////////////////////////////////////////////////////////
154//
155// Assignment operator
156//
157G4UPolycone& G4UPolycone::operator=( const G4UPolycone& source )
158{
159 if (this == &source) return *this;
160
161 Base_t::operator=( source );
162 fGenericPcon = source.fGenericPcon;
163 fOriginalParameters = source.fOriginalParameters;
164 wrStart = source.wrStart;
165 wrDelta = source.wrDelta;
166 rzcorners = source.rzcorners;
167
168 return *this;
169}
170
171
172////////////////////////////////////////////////////////////////////////
173//
174// Accessors & modifiers
175//
176G4double G4UPolycone::GetStartPhi() const
177{
178 return wrStart;
179}
180G4double G4UPolycone::GetDeltaPhi() const
181{
182 return wrDelta;
183}
184G4double G4UPolycone::GetEndPhi() const
185{
186 return (wrStart + wrDelta);
187}
188G4double G4UPolycone::GetSinStartPhi() const
189{
190 if (!IsOpen()) return 0.;
191 G4double phi = GetStartPhi();
192 return std::sin(phi);
193}
194G4double G4UPolycone::GetCosStartPhi() const
195{
196 if (!IsOpen()) return 1.;
197 G4double phi = GetStartPhi();
198 return std::cos(phi);
199}
200G4double G4UPolycone::GetSinEndPhi() const
201{
202 if (!IsOpen()) return 0.;
203 G4double phi = GetEndPhi();
204 return std::sin(phi);
205}
206G4double G4UPolycone::GetCosEndPhi() const
207{
208 if (!IsOpen()) return 1.;
209 G4double phi = GetEndPhi();
210 return std::cos(phi);
211}
212G4bool G4UPolycone::IsOpen() const
213{
214 return (wrDelta < twopi);
215}
216G4int G4UPolycone::GetNumRZCorner() const
217{
218 return rzcorners.size();
219}
220G4PolyconeSideRZ G4UPolycone::GetCorner(G4int index) const
221{
222 G4TwoVector rz = rzcorners.at(index);
223 G4PolyconeSideRZ psiderz = { rz.x(), rz.y() };
224
225 return psiderz;
226}
227G4PolyconeHistorical* G4UPolycone::GetOriginalParameters() const
228{
229 return new G4PolyconeHistorical(fOriginalParameters);
230}
231void G4UPolycone::SetOriginalParameters()
232{
233 vecgeom::PolyconeHistorical* original_parameters = Base_t::GetOriginalParameters();
234
235 fOriginalParameters.Start_angle = original_parameters->fHStart_angle;
236 fOriginalParameters.Opening_angle = original_parameters->fHOpening_angle;
237 fOriginalParameters.Num_z_planes = original_parameters->fHNum_z_planes;
238
239 delete [] fOriginalParameters.Z_values;
240 delete [] fOriginalParameters.Rmin;
241 delete [] fOriginalParameters.Rmax;
242
243 G4int numPlanes = fOriginalParameters.Num_z_planes;
244 fOriginalParameters.Z_values = new G4double[numPlanes];
245 fOriginalParameters.Rmin = new G4double[numPlanes];
246 fOriginalParameters.Rmax = new G4double[numPlanes];
247 for (G4int i=0; i<numPlanes; ++i)
248 {
249 fOriginalParameters.Z_values[i] = original_parameters->fHZ_values[i];
250 fOriginalParameters.Rmin[i] = original_parameters->fHRmin[i];
251 fOriginalParameters.Rmax[i] = original_parameters->fHRmax[i];
252 }
253}
254void G4UPolycone::SetOriginalParameters(G4PolyconeHistorical* pars)
255{
256 fOriginalParameters = *pars;
257 fRebuildPolyhedron = true;
258 Reset();
259}
260
261G4bool G4UPolycone::Reset()
262{
263 if (fGenericPcon)
264 {
265 std::ostringstream message;
266 message << "Solid " << GetName() << " built using generic construct."
267 << G4endl << "Not applicable to the generic construct !";
268 G4Exception("G4UPolycone::Reset()", "GeomSolids1001",
269 JustWarning, message, "Parameters NOT reset.");
270 return true; // error code set
271 }
272
273 //
274 // Rebuild polycone based on original parameters
275 //
276 wrStart = fOriginalParameters.Start_angle;
277 while (wrStart < 0.)
278 {
279 wrStart += twopi;
280 }
281 wrDelta = fOriginalParameters.Opening_angle;
282 if (wrDelta <= 0. || wrDelta >= twopi*(1-DBL_EPSILON))
283 {
284 wrStart = 0.;
285 wrDelta = twopi;
286 }
287 rzcorners.resize(0);
288 for (G4int i=0; i<fOriginalParameters.Num_z_planes; ++i)
289 {
290 G4double z = fOriginalParameters.Z_values[i];
291 G4double r = fOriginalParameters.Rmax[i];
292 rzcorners.push_back(G4TwoVector(r,z));
293 }
294 for (G4int i=fOriginalParameters.Num_z_planes-1; i>=0; --i)
295 {
296 G4double z = fOriginalParameters.Z_values[i];
297 G4double r = fOriginalParameters.Rmin[i];
298 rzcorners.push_back(G4TwoVector(r,z));
299 }
300 std::vector<G4int> iout;
301 G4GeomTools::RemoveRedundantVertices(rzcorners,iout,2*kCarTolerance);
302
303 return false; // error code unset
304}
305
306////////////////////////////////////////////////////////////////////////
307//
308// Dispatch to parameterisation for replication mechanism dimension
309// computation & modification.
310//
311void G4UPolycone::ComputeDimensions(G4VPVParameterisation* p,
312 const G4int n,
313 const G4VPhysicalVolume* pRep)
314{
315 p->ComputeDimensions(*(G4Polycone*)this,n,pRep);
316}
317
318
319//////////////////////////////////////////////////////////////////////////
320//
321// Make a clone of the object
322
323G4VSolid* G4UPolycone::Clone() const
324{
325 return new G4UPolycone(*this);
326}
327
328//////////////////////////////////////////////////////////////////////////
329//
330// Get bounding box
331
332void G4UPolycone::BoundingLimits(G4ThreeVector& pMin,
333 G4ThreeVector& pMax) const
334{
335 static G4bool checkBBox = true;
336 static G4bool checkPhi = true;
337
338 G4double rmin = kInfinity, rmax = -kInfinity;
339 G4double zmin = kInfinity, zmax = -kInfinity;
340
341 for (G4int i=0; i<GetNumRZCorner(); ++i)
342 {
343 G4PolyconeSideRZ corner = GetCorner(i);
344 if (corner.r < rmin) rmin = corner.r;
345 if (corner.r > rmax) rmax = corner.r;
346 if (corner.z < zmin) zmin = corner.z;
347 if (corner.z > zmax) zmax = corner.z;
348 }
349
350 if (IsOpen())
351 {
352 G4TwoVector vmin,vmax;
353 G4GeomTools::DiskExtent(rmin,rmax,
354 GetSinStartPhi(),GetCosStartPhi(),
355 GetSinEndPhi(),GetCosEndPhi(),
356 vmin,vmax);
357 pMin.set(vmin.x(),vmin.y(),zmin);
358 pMax.set(vmax.x(),vmax.y(),zmax);
359 }
360 else
361 {
362 pMin.set(-rmax,-rmax, zmin);
363 pMax.set( rmax, rmax, zmax);
364 }
365
366 // Check correctness of the bounding box
367 //
368 if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
369 {
370 std::ostringstream message;
371 message << "Bad bounding box (min >= max) for solid: "
372 << GetName() << " !"
373 << "\npMin = " << pMin
374 << "\npMax = " << pMax;
375 G4Exception("G4UPolycone::BoundingLimits()", "GeomMgt0001",
376 JustWarning, message);
377 StreamInfo(G4cout);
378 }
379
380 // Check consistency of bounding boxes
381 //
382 if (checkBBox)
383 {
384 U3Vector vmin, vmax;
385 Extent(vmin,vmax);
386 if (std::abs(pMin.x()-vmin.x()) > kCarTolerance ||
387 std::abs(pMin.y()-vmin.y()) > kCarTolerance ||
388 std::abs(pMin.z()-vmin.z()) > kCarTolerance ||
389 std::abs(pMax.x()-vmax.x()) > kCarTolerance ||
390 std::abs(pMax.y()-vmax.y()) > kCarTolerance ||
391 std::abs(pMax.z()-vmax.z()) > kCarTolerance)
392 {
393 std::ostringstream message;
394 message << "Inconsistency in bounding boxes for solid: "
395 << GetName() << " !"
396 << "\nBBox min: wrapper = " << pMin << " solid = " << vmin
397 << "\nBBox max: wrapper = " << pMax << " solid = " << vmax;
398 G4Exception("G4UPolycone::BoundingLimits()", "GeomMgt0001",
399 JustWarning, message);
400 checkBBox = false;
401 }
402 }
403
404 // Check consistency of angles
405 //
406 if (checkPhi)
407 {
408 if (GetStartPhi() != Base_t::GetStartPhi() ||
409 GetEndPhi() != Base_t::GetEndPhi() ||
410 IsOpen() != (Base_t::GetDeltaPhi() < twopi))
411 {
412 std::ostringstream message;
413 message << "Inconsistency in Phi angles or # of sides for solid: "
414 << GetName() << " !"
415 << "\nPhi start : wrapper = " << GetStartPhi()
416 << " solid = " << Base_t::GetStartPhi()
417 << "\nPhi end : wrapper = " << GetEndPhi()
418 << " solid = " << Base_t::GetEndPhi()
419 << "\nPhi is open: wrapper = " << (IsOpen() ? "true" : "false")
420 << " solid = "
421 << ((Base_t::GetDeltaPhi() < twopi) ? "true" : "false");
422 G4Exception("G4UPolycone::BoundingLimits()", "GeomMgt0001",
423 JustWarning, message);
424 checkPhi = false;
425 }
426 }
427}
428
429//////////////////////////////////////////////////////////////////////////
430//
431// Calculate extent under transform and specified limit
432
433G4bool G4UPolycone::CalculateExtent(const EAxis pAxis,
434 const G4VoxelLimits& pVoxelLimit,
435 const G4AffineTransform& pTransform,
436 G4double& pMin, G4double& pMax) const
437{
438 G4ThreeVector bmin, bmax;
439 G4bool exist;
440
441 // Check bounding box (bbox)
442 //
443 BoundingLimits(bmin,bmax);
444 G4BoundingEnvelope bbox(bmin,bmax);
445#ifdef G4BBOX_EXTENT
446 return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
447#endif
448 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVoxelLimit,pTransform,pMin,pMax))
449 {
450 return exist = (pMin < pMax) ? true : false;
451 }
452
453 // To find the extent, RZ contour of the polycone is subdivided
454 // in triangles. The extent is calculated as cumulative extent of
455 // all sub-polycones formed by rotation of triangles around Z
456 //
457 G4TwoVectorList contourRZ;
458 G4TwoVectorList triangles;
459 std::vector<G4int> iout;
460 G4double eminlim = pVoxelLimit.GetMinExtent(pAxis);
461 G4double emaxlim = pVoxelLimit.GetMaxExtent(pAxis);
462
463 // get RZ contour, ensure anticlockwise order of corners
464 for (G4int i=0; i<GetNumRZCorner(); ++i)
465 {
466 G4PolyconeSideRZ corner = GetCorner(i);
467 contourRZ.push_back(G4TwoVector(corner.r,corner.z));
468 }
469 G4GeomTools::RemoveRedundantVertices(contourRZ,iout,2*kCarTolerance);
470 G4double area = G4GeomTools::PolygonArea(contourRZ);
471 if (area < 0.) std::reverse(contourRZ.begin(),contourRZ.end());
472
473 // triangulate RZ countour
474 if (!G4GeomTools::TriangulatePolygon(contourRZ,triangles))
475 {
476 std::ostringstream message;
477 message << "Triangulation of RZ contour has failed for solid: "
478 << GetName() << " !"
479 << "\nExtent has been calculated using boundary box";
480 G4Exception("G4UPolycone::CalculateExtent()",
481 "GeomMgt1002", JustWarning, message);
482 return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
483 }
484
485 // set trigonometric values
486 const G4int NSTEPS = 24; // number of steps for whole circle
487 G4double astep = twopi/NSTEPS; // max angle for one step
488
489 G4double sphi = GetStartPhi();
490 G4double ephi = GetEndPhi();
491 G4double dphi = IsOpen() ? ephi-sphi : twopi;
492 G4int ksteps = (dphi <= astep) ? 1 : (G4int)((dphi-deg)/astep) + 1;
493 G4double ang = dphi/ksteps;
494
495 G4double sinHalf = std::sin(0.5*ang);
496 G4double cosHalf = std::cos(0.5*ang);
497 G4double sinStep = 2.*sinHalf*cosHalf;
498 G4double cosStep = 1. - 2.*sinHalf*sinHalf;
499
500 G4double sinStart = GetSinStartPhi();
501 G4double cosStart = GetCosStartPhi();
502 G4double sinEnd = GetSinEndPhi();
503 G4double cosEnd = GetCosEndPhi();
504
505 // define vectors and arrays
506 std::vector<const G4ThreeVectorList *> polygons;
507 polygons.resize(ksteps+2);
508 G4ThreeVectorList pols[NSTEPS+2];
509 for (G4int k=0; k<ksteps+2; ++k) pols[k].resize(6);
510 for (G4int k=0; k<ksteps+2; ++k) polygons[k] = &pols[k];
511 G4double r0[6],z0[6]; // contour with original edges of triangle
512 G4double r1[6]; // shifted radii of external edges of triangle
513
514 // main loop along triangles
515 pMin = kInfinity;
516 pMax =-kInfinity;
517 G4int ntria = triangles.size()/3;
518 for (G4int i=0; i<ntria; ++i)
519 {
520 G4int i3 = i*3;
521 for (G4int k=0; k<3; ++k)
522 {
523 G4int e0 = i3+k, e1 = (k<2) ? e0+1 : i3;
524 G4int k2 = k*2;
525 // set contour with original edges of triangle
526 r0[k2+0] = triangles[e0].x(); z0[k2+0] = triangles[e0].y();
527 r0[k2+1] = triangles[e1].x(); z0[k2+1] = triangles[e1].y();
528 // set shifted radii
529 r1[k2+0] = r0[k2+0];
530 r1[k2+1] = r0[k2+1];
531 if (z0[k2+1] - z0[k2+0] <= 0) continue;
532 r1[k2+0] /= cosHalf;
533 r1[k2+1] /= cosHalf;
534 }
535
536 // rotate countour, set sequence of 6-sided polygons
537 G4double sinCur = sinStart*cosHalf + cosStart*sinHalf;
538 G4double cosCur = cosStart*cosHalf - sinStart*sinHalf;
539 for (G4int j=0; j<6; ++j) pols[0][j].set(r0[j]*cosStart,r0[j]*sinStart,z0[j]);
540 for (G4int k=1; k<ksteps+1; ++k)
541 {
542 for (G4int j=0; j<6; ++j) pols[k][j].set(r1[j]*cosCur,r1[j]*sinCur,z0[j]);
543 G4double sinTmp = sinCur;
544 sinCur = sinCur*cosStep + cosCur*sinStep;
545 cosCur = cosCur*cosStep - sinTmp*sinStep;
546 }
547 for (G4int j=0; j<6; ++j) pols[ksteps+1][j].set(r0[j]*cosEnd,r0[j]*sinEnd,z0[j]);
548
549 // set sub-envelope and adjust extent
550 G4double emin,emax;
551 G4BoundingEnvelope benv(polygons);
552 if (!benv.CalculateExtent(pAxis,pVoxelLimit,pTransform,emin,emax)) continue;
553 if (emin < pMin) pMin = emin;
554 if (emax > pMax) pMax = emax;
555 if (eminlim > pMin && emaxlim < pMax) return true; // max possible extent
556 }
557 return (pMin < pMax);
558}
559
560////////////////////////////////////////////////////////////////////////
561//
562// CreatePolyhedron
563//
564G4Polyhedron* G4UPolycone::CreatePolyhedron() const
565{
566 return new G4PolyhedronPcon(wrStart, wrDelta, rzcorners);
567}
568
569#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::DiskExtent
static G4bool DiskExtent(G4double rmin, G4double rmax, G4double startPhi, G4double delPhi, G4TwoVector &pmin, G4TwoVector &pmax)
Definition: G4GeomTools.cc:390
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