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25 //
26 // Implementation for G4UCons wrapper class
27 //
28 // 30.10.13 G.Cosmo, CERN/PH
29 // --------------------------------------------------------------------
30
31 #include "G4Cons.hh"
32 #include "G4UCons.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
41 using namespace CLHEP;
42
43 //////////////////////////////////////////////////////////////////////////
44 //
45 // constructor - check parameters, convert angles so 0<sphi+dpshi<=2_PI
46 // - note if pDPhi>2PI then reset to 2PI
47
48 G4UCons::G4UCons( const G4String& pName,
49 G4double pRmin1, G4double pRmax1,
50 G4double pRmin2, G4double pRmax2,
51 G4double pDz,
52 G4double pSPhi, G4double pDPhi)
53 : Base_t(pName, pRmin1, pRmax1, pRmin2, pRmax2, pDz, pSPhi, pDPhi)
54 {
55 }
56
57 ///////////////////////////////////////////////////////////////////////
58 //
59 // Fake default constructor - sets only member data and allocates memory
60 // for usage restricted to object persistency.
61 //
62 G4UCons::G4UCons( __void__& a )
63 : Base_t(a)
64 {
65 }
66
67 ///////////////////////////////////////////////////////////////////////
68 //
69 // Destructor
70
71 G4UCons::~G4UCons() = default;
72
73 //////////////////////////////////////////////////////////////////////////
74 //
75 // Copy constructor
76
77 G4UCons::G4UCons(const G4UCons& rhs)
78 : Base_t(rhs)
79 {
80 }
81
82 //////////////////////////////////////////////////////////////////////////
83 //
84 // Assignment operator
85
86 G4UCons& G4UCons::operator = (const G4UCons& rhs)
87 {
88 // Check assignment to self
89 //
90 if (this == &rhs) { return *this; }
91
92 // Copy base class data
93 //
94 Base_t::operator=(rhs);
95
96 return *this;
97 }
98
99 /////////////////////////////////////////////////////////////////////////
100 //
101 // Accessors and modifiers
102
103 G4double G4UCons::GetInnerRadiusMinusZ() const
104 {
105 return GetRmin1();
106 }
107 G4double G4UCons::GetOuterRadiusMinusZ() const
108 {
109 return GetRmax1();
110 }
111 G4double G4UCons::GetInnerRadiusPlusZ() const
112 {
113 return GetRmin2();
114 }
115 G4double G4UCons::GetOuterRadiusPlusZ() const
116 {
117 return GetRmax2();
118 }
119 G4double G4UCons::GetZHalfLength() const
120 {
121 return GetDz();
122 }
123 G4double G4UCons::GetStartPhiAngle() const
124 {
125 return GetSPhi();
126 }
127 G4double G4UCons::GetDeltaPhiAngle() const
128 {
129 return GetDPhi();
130 }
131 G4double G4UCons::GetSinStartPhi() const
132 {
133 G4double phi = GetStartPhiAngle();
134 return std::sin(phi);
135 }
136 G4double G4UCons::GetCosStartPhi() const
137 {
138 G4double phi = GetStartPhiAngle();
139 return std::cos(phi);
140 }
141 G4double G4UCons::GetSinEndPhi() const
142 {
143 G4double phi = GetStartPhiAngle() + GetDeltaPhiAngle();
144 return std::sin(phi);
145 }
146 G4double G4UCons::GetCosEndPhi() const
147 {
148 G4double phi = GetStartPhiAngle() + GetDeltaPhiAngle();
149 return std::cos(phi);
150 }
151
152 void G4UCons::SetInnerRadiusMinusZ(G4double Rmin1)
153 {
154 SetRmin1(Rmin1);
155 fRebuildPolyhedron = true;
156 }
157 void G4UCons::SetOuterRadiusMinusZ(G4double Rmax1)
158 {
159 SetRmax1(Rmax1);
160 fRebuildPolyhedron = true;
161 }
162 void G4UCons::SetInnerRadiusPlusZ(G4double Rmin2)
163 {
164 SetRmin2(Rmin2);
165 fRebuildPolyhedron = true;
166 }
167 void G4UCons::SetOuterRadiusPlusZ(G4double Rmax2)
168 {
169 SetRmax2(Rmax2);
170 fRebuildPolyhedron = true;
171 }
172 void G4UCons::SetZHalfLength(G4double newDz)
173 {
174 SetDz(newDz);
175 fRebuildPolyhedron = true;
176 }
177 void G4UCons::SetStartPhiAngle(G4double newSPhi, G4bool)
178 {
179 SetSPhi(newSPhi);
180 fRebuildPolyhedron = true;
181 }
182 void G4UCons::SetDeltaPhiAngle(G4double newDPhi)
183 {
184 SetDPhi(newDPhi);
185 fRebuildPolyhedron = true;
186 }
187
188 /////////////////////////////////////////////////////////////////////////
189 //
190 // Dispatch to parameterisation for replication mechanism dimension
191 // computation & modification.
192
193 void G4UCons::ComputeDimensions( G4VPVParameterisation* p,
194 const G4int n,
195 const G4VPhysicalVolume* pRep )
196 {
197 p->ComputeDimensions(*(G4Cons*)this,n,pRep);
198 }
199
200 //////////////////////////////////////////////////////////////////////////
201 //
202 // Make a clone of the object
203
204 G4VSolid* G4UCons::Clone() const
205 {
206 return new G4UCons(*this);
207 }
208
209 //////////////////////////////////////////////////////////////////////////
210 //
211 // Get bounding box
212
213 void G4UCons::BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const
214 {
215 static G4bool checkBBox = true;
216
217 G4double rmin = std::min(GetInnerRadiusMinusZ(),GetInnerRadiusPlusZ());
218 G4double rmax = std::max(GetOuterRadiusMinusZ(),GetOuterRadiusPlusZ());
219 G4double dz = GetZHalfLength();
220
221 // Find bounding box
222 //
223 if (GetDeltaPhiAngle() < twopi)
224 {
225 G4TwoVector vmin,vmax;
226 G4GeomTools::DiskExtent(rmin,rmax,
227 GetSinStartPhi(),GetCosStartPhi(),
228 GetSinEndPhi(),GetCosEndPhi(),
229 vmin,vmax);
230 pMin.set(vmin.x(),vmin.y(),-dz);
231 pMax.set(vmax.x(),vmax.y(), dz);
232 }
233 else
234 {
235 pMin.set(-rmax,-rmax,-dz);
236 pMax.set( rmax, rmax, dz);
237 }
238
239 // Check correctness of the bounding box
240 //
241 if (pMin.x() >= pMax.x() || pMin.y() >= pMax.y() || pMin.z() >= pMax.z())
242 {
243 std::ostringstream message;
244 message << "Bad bounding box (min >= max) for solid: "
245 << GetName() << " !"
246 << "\npMin = " << pMin
247 << "\npMax = " << pMax;
248 G4Exception("G4UCons::BoundingLimits()", "GeomMgt0001",
249 JustWarning, message);
250 StreamInfo(G4cout);
251 }
252
253 // Check consistency of bounding boxes
254 //
255 if (checkBBox)
256 {
257 U3Vector vmin, vmax;
258 Extent(vmin,vmax);
259 if (std::abs(pMin.x()-vmin.x()) > kCarTolerance ||
260 std::abs(pMin.y()-vmin.y()) > kCarTolerance ||
261 std::abs(pMin.z()-vmin.z()) > kCarTolerance ||
262 std::abs(pMax.x()-vmax.x()) > kCarTolerance ||
263 std::abs(pMax.y()-vmax.y()) > kCarTolerance ||
264 std::abs(pMax.z()-vmax.z()) > kCarTolerance)
265 {
266 std::ostringstream message;
267 message << "Inconsistency in bounding boxes for solid: "
268 << GetName() << " !"
269 << "\nBBox min: wrapper = " << pMin << " solid = " << vmin
270 << "\nBBox max: wrapper = " << pMax << " solid = " << vmax;
271 G4Exception("G4UCons::BoundingLimits()", "GeomMgt0001",
272 JustWarning, message);
273 checkBBox = false;
274 }
275 }
276 }
277
278 /////////////////////////////////////////////////////////////////////////
279 //
280 // Calculate extent under transform and specified limit
281
282 G4bool
283 G4UCons::CalculateExtent(const EAxis pAxis,
284 const G4VoxelLimits& pVoxelLimit,
285 const G4AffineTransform& pTransform,
286 G4double& pMin, G4double& pMax) const
287 {
288 G4ThreeVector bmin, bmax;
289 G4bool exist;
290
291 // Get bounding box
292 BoundingLimits(bmin,bmax);
293
294 // Check bounding box
295 G4BoundingEnvelope bbox(bmin,bmax);
296 #ifdef G4BBOX_EXTENT
297 if (true) return bbox.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
298 #endif
299 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVoxelLimit,pTransform,pMin,pMax))
300 {
301 return exist = pMin < pMax;
302 }
303
304 // Get parameters of the solid
305 G4double rmin1 = GetInnerRadiusMinusZ();
306 G4double rmax1 = GetOuterRadiusMinusZ();
307 G4double rmin2 = GetInnerRadiusPlusZ();
308 G4double rmax2 = GetOuterRadiusPlusZ();
309 G4double dz = GetZHalfLength();
310 G4double dphi = GetDeltaPhiAngle();
311
312 // Find bounding envelope and calculate extent
313 //
314 const G4int NSTEPS = 24; // number of steps for whole circle
315 G4double astep = twopi/NSTEPS; // max angle for one step
316 G4int ksteps = (dphi <= astep) ? 1 : (G4int)((dphi-deg)/astep) + 1;
317 G4double ang = dphi/ksteps;
318
319 G4double sinHalf = std::sin(0.5*ang);
320 G4double cosHalf = std::cos(0.5*ang);
321 G4double sinStep = 2.*sinHalf*cosHalf;
322 G4double cosStep = 1. - 2.*sinHalf*sinHalf;
323 G4double rext1 = rmax1/cosHalf;
324 G4double rext2 = rmax2/cosHalf;
325
326 // bounding envelope for full cone without hole consists of two polygons,
327 // in other cases it is a sequence of quadrilaterals
328 if (rmin1 == 0 && rmin2 == 0 && dphi == twopi)
329 {
330 G4double sinCur = sinHalf;
331 G4double cosCur = cosHalf;
332
333 G4ThreeVectorList baseA(NSTEPS),baseB(NSTEPS);
334 for (G4int k=0; k<NSTEPS; ++k)
335 {
336 baseA[k].set(rext1*cosCur,rext1*sinCur,-dz);
337 baseB[k].set(rext2*cosCur,rext2*sinCur, dz);
338
339 G4double sinTmp = sinCur;
340 sinCur = sinCur*cosStep + cosCur*sinStep;
341 cosCur = cosCur*cosStep - sinTmp*sinStep;
342 }
343 std::vector<const G4ThreeVectorList *> polygons(2);
344 polygons[0] = &baseA;
345 polygons[1] = &baseB;
346 G4BoundingEnvelope benv(bmin,bmax,polygons);
347 exist = benv.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
348 }
349 else
350 {
351 G4double sinStart = GetSinStartPhi();
352 G4double cosStart = GetCosStartPhi();
353 G4double sinEnd = GetSinEndPhi();
354 G4double cosEnd = GetCosEndPhi();
355 G4double sinCur = sinStart*cosHalf + cosStart*sinHalf;
356 G4double cosCur = cosStart*cosHalf - sinStart*sinHalf;
357
358 // set quadrilaterals
359 G4ThreeVectorList pols[NSTEPS+2];
360 for (G4int k=0; k<ksteps+2; ++k) pols[k].resize(4);
361 pols[0][0].set(rmin2*cosStart,rmin2*sinStart, dz);
362 pols[0][1].set(rmin1*cosStart,rmin1*sinStart,-dz);
363 pols[0][2].set(rmax1*cosStart,rmax1*sinStart,-dz);
364 pols[0][3].set(rmax2*cosStart,rmax2*sinStart, dz);
365 for (G4int k=1; k<ksteps+1; ++k)
366 {
367 pols[k][0].set(rmin2*cosCur,rmin2*sinCur, dz);
368 pols[k][1].set(rmin1*cosCur,rmin1*sinCur,-dz);
369 pols[k][2].set(rext1*cosCur,rext1*sinCur,-dz);
370 pols[k][3].set(rext2*cosCur,rext2*sinCur, dz);
371
372 G4double sinTmp = sinCur;
373 sinCur = sinCur*cosStep + cosCur*sinStep;
374 cosCur = cosCur*cosStep - sinTmp*sinStep;
375 }
376 pols[ksteps+1][0].set(rmin2*cosEnd,rmin2*sinEnd, dz);
377 pols[ksteps+1][1].set(rmin1*cosEnd,rmin1*sinEnd,-dz);
378 pols[ksteps+1][2].set(rmax1*cosEnd,rmax1*sinEnd,-dz);
379 pols[ksteps+1][3].set(rmax2*cosEnd,rmax2*sinEnd, dz);
380
381 // set envelope and calculate extent
382 std::vector<const G4ThreeVectorList *> polygons;
383 polygons.resize(ksteps+2);
384 for (G4int k=0; k<ksteps+2; ++k) polygons[k] = &pols[k];
385 G4BoundingEnvelope benv(bmin,bmax,polygons);
386 exist = benv.CalculateExtent(pAxis,pVoxelLimit,pTransform,pMin,pMax);
387 }
388 return exist;
389 }
390
391 //////////////////////////////////////////////////////////////////////////
392 //
393 // Create polyhedron for visualization
394
395 G4Polyhedron* G4UCons::CreatePolyhedron() const
396 {
397 return new G4PolyhedronCons(GetInnerRadiusMinusZ(),
398 GetOuterRadiusMinusZ(),
399 GetInnerRadiusPlusZ(),
400 GetOuterRadiusPlusZ(),
401 GetZHalfLength(),
402 GetStartPhiAngle(),
403 GetDeltaPhiAngle());
404 }
405
406 #endif // G4GEOM_USE_USOLIDS
407