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25 // 25 //
>> 26 //
>> 27 // $Id: G4Para.cc,v 1.39 2006/10/19 15:33:37 gcosmo Exp $
>> 28 // GEANT4 tag $Name: geant4-09-01 $
>> 29 //
>> 30 // class G4Para
>> 31 //
26 // Implementation for G4Para class 32 // Implementation for G4Para class
27 // 33 //
28 // 21.03.95 P.Kent: Modified for `tolerant' ge << 34 // History:
>> 35 //
>> 36 // 23.10.05 V.Grichine: bug fixed in DistanceToOut(p,v,...) for the v.x()<0 case
>> 37 // 28.04.05 V.Grichine: new SurfaceNormal according to J. Apostolakis proposal
>> 38 // 30.11.04 V.Grichine: modifications in SurfaceNormal for edges/vertices and
>> 39 // in constructor with vertices
>> 40 // 14.02.02 V.Grichine: bug fixed in Inside according to proposal of D.Wright
>> 41 // 18.11.99 V.Grichine: kUndef was added to ESide
29 // 31.10.96 V.Grichine: Modifications accordin 42 // 31.10.96 V.Grichine: Modifications according G4Box/Tubs before to commit
30 // 28.04.05 V.Grichine: new SurfaceNormal acco << 43 // 21.03.95 P.Kent: Modified for `tolerant' geom
31 // 29.05.17 E.Tcherniaev: complete revision, s << 44 //
32 ////////////////////////////////////////////// 45 ////////////////////////////////////////////////////////////////////////////
33 46
34 #include "G4Para.hh" 47 #include "G4Para.hh"
35 48
36 #if !defined(G4GEOM_USE_UPARA) <<
37 <<
38 #include "G4VoxelLimits.hh" 49 #include "G4VoxelLimits.hh"
39 #include "G4AffineTransform.hh" 50 #include "G4AffineTransform.hh"
40 #include "G4BoundingEnvelope.hh" <<
41 #include "Randomize.hh" 51 #include "Randomize.hh"
42 52
43 #include "G4VPVParameterisation.hh" 53 #include "G4VPVParameterisation.hh"
44 54
45 #include "G4VGraphicsScene.hh" 55 #include "G4VGraphicsScene.hh"
>> 56 #include "G4Polyhedron.hh"
>> 57 #include "G4NURBS.hh"
>> 58 #include "G4NURBSbox.hh"
46 59
47 using namespace CLHEP; 60 using namespace CLHEP;
48 61
49 ////////////////////////////////////////////// << 62 // Private enum: Not for external use
50 // << 63
51 // Constructor - set & check half widths << 64 enum ESide {kUndef,kPX,kMX,kPY,kMY,kPZ,kMZ};
52 <<
53 G4Para::G4Para(const G4String& pName, <<
54 G4double pDx, G4double pD <<
55 G4double pAlpha, G4double <<
56 : G4CSGSolid(pName), halfCarTolerance(0.5*kC <<
57 { <<
58 SetAllParameters(pDx, pDy, pDz, pAlpha, pThe <<
59 fRebuildPolyhedron = false; // default valu <<
60 } <<
61 <<
62 ////////////////////////////////////////////// <<
63 // <<
64 // Constructor - design of trapezoid based on <<
65 <<
66 G4Para::G4Para( const G4String& pName, <<
67 const G4ThreeVector pt[8] ) <<
68 : G4CSGSolid(pName), halfCarTolerance(0.5*kC <<
69 { <<
70 // Find dimensions and trigonometric values <<
71 // <<
72 fDx = (pt[3].x() - pt[2].x())*0.5; <<
73 fDy = (pt[2].y() - pt[1].y())*0.5; <<
74 fDz = pt[7].z(); <<
75 CheckParameters(); // check dimensions <<
76 <<
77 fTalpha = (pt[2].x() + pt[3].x() - pt[1].x() <<
78 fTthetaCphi = (pt[4].x() + fDy*fTalpha + fDx <<
79 fTthetaSphi = (pt[4].y() + fDy)/fDz; <<
80 MakePlanes(); <<
81 <<
82 // Recompute vertices <<
83 // <<
84 G4ThreeVector v[8]; <<
85 G4double DyTalpha = fDy*fTalpha; <<
86 G4double DzTthetaSphi = fDz*fTthetaSphi; <<
87 G4double DzTthetaCphi = fDz*fTthetaCphi; <<
88 v[0].set(-DzTthetaCphi-DyTalpha-fDx, -DzTthe <<
89 v[1].set(-DzTthetaCphi-DyTalpha+fDx, -DzTthe <<
90 v[2].set(-DzTthetaCphi+DyTalpha-fDx, -DzTthe <<
91 v[3].set(-DzTthetaCphi+DyTalpha+fDx, -DzTthe <<
92 v[4].set( DzTthetaCphi-DyTalpha-fDx, DzTthe <<
93 v[5].set( DzTthetaCphi-DyTalpha+fDx, DzTthe <<
94 v[6].set( DzTthetaCphi+DyTalpha-fDx, DzTthe <<
95 v[7].set( DzTthetaCphi+DyTalpha+fDx, DzTthe <<
96 <<
97 // Compare with original vertices <<
98 // <<
99 for (G4int i=0; i<8; ++i) <<
100 { <<
101 G4double delx = std::abs(pt[i].x() - v[i]. <<
102 G4double dely = std::abs(pt[i].y() - v[i]. <<
103 G4double delz = std::abs(pt[i].z() - v[i]. <<
104 G4double discrepancy = std::max(std::max(d <<
105 if (discrepancy > 0.1*kCarTolerance) <<
106 { <<
107 std::ostringstream message; <<
108 G4long oldprc = message.precision(16); <<
109 message << "Invalid vertice coordinates <<
110 << "\nVertix #" << i << ", discr <<
111 << "\n original : " << pt[i] <<
112 << "\n recomputed : " << v[i]; <<
113 G4cout.precision(oldprc); <<
114 G4Exception("G4Para::G4Para()", "GeomSol <<
115 FatalException, message); <<
116 <<
117 } <<
118 } <<
119 } <<
120 <<
121 ////////////////////////////////////////////// <<
122 // <<
123 // Fake default constructor - sets only member <<
124 // for usage restri <<
125 <<
126 G4Para::G4Para( __void__& a ) <<
127 : G4CSGSolid(a), halfCarTolerance(0.5*kCarTo <<
128 { <<
129 SetAllParameters(1., 1., 1., 0., 0., 0.); <<
130 fRebuildPolyhedron = false; // default value <<
131 } <<
132 65
133 ////////////////////////////////////////////// << 66 // used internally for normal routine
134 // <<
135 // Destructor <<
136 67
137 G4Para::~G4Para() = default; << 68 enum ENSide {kNZ,kNX,kNY};
138 69
139 ////////////////////////////////////////////// << 70 /////////////////////////////////////////////////////////////////////
140 // 71 //
141 // Copy constructor << 72 // Constructor - check and set half-widths
142 73
143 G4Para::G4Para(const G4Para& rhs) << 74 void G4Para::SetAllParameters( G4double pDx, G4double pDy, G4double pDz,
144 : G4CSGSolid(rhs), halfCarTolerance(rhs.half << 75 G4double pAlpha, G4double pTheta, G4double pPhi )
145 fDx(rhs.fDx), fDy(rhs.fDy), fDz(rhs.fDz), <<
146 fTthetaCphi(rhs.fTthetaCphi),fTthetaSphi(r <<
147 { 76 {
148 for (G4int i=0; i<4; ++i) { fPlanes[i] = rhs << 77 if ( pDx > 0 && pDy > 0 && pDz > 0 )
>> 78 {
>> 79 fDx = pDx;
>> 80 fDy = pDy;
>> 81 fDz = pDz;
>> 82 fTalpha = std::tan(pAlpha);
>> 83 fTthetaCphi = std::tan(pTheta)*std::cos(pPhi);
>> 84 fTthetaSphi = std::tan(pTheta)*std::sin(pPhi);
>> 85 }
>> 86 else
>> 87 {
>> 88 G4cerr << "ERROR - G4Para()::SetAllParameters(): " << GetName() << G4endl
>> 89 << " Invalid dimensions ! - "
>> 90 << pDx << ", " << pDy << ", " << pDz << G4endl;
>> 91 G4Exception("G4Para::SetAllParameters()", "InvalidSetup",
>> 92 FatalException, "Invalid Length Parameters.");
>> 93 }
>> 94 fCubicVolume = 0.;
>> 95 fSurfaceArea = 0.;
>> 96 fpPolyhedron = 0;
149 } 97 }
150 98
151 ////////////////////////////////////////////// << 99 ///////////////////////////////////////////////////////////////////////////
152 // 100 //
153 // Assignment operator <<
154 101
155 G4Para& G4Para::operator = (const G4Para& rhs) << 102 G4Para::G4Para(const G4String& pName,
>> 103 G4double pDx, G4double pDy, G4double pDz,
>> 104 G4double pAlpha, G4double pTheta, G4double pPhi)
>> 105 : G4CSGSolid(pName)
156 { 106 {
157 // Check assignment to self << 107 if (pDx>0&&pDy>0&&pDz>0)
158 // << 108 {
159 if (this == &rhs) { return *this; } << 109 SetAllParameters( pDx, pDy, pDz, pAlpha, pTheta, pPhi);
160 << 110 }
161 // Copy base class data << 111 else
162 // << 112 {
163 G4CSGSolid::operator=(rhs); << 113 G4cerr << "ERROR - G4Para()::G4Para(): " << GetName() << G4endl
164 << 114 << " Invalid dimensions ! - "
165 // Copy data << 115 << pDx << ", " << pDy << ", " << pDz << G4endl;
166 // << 116 G4Exception("G4Para::G4Para()", "InvalidSetup",
167 halfCarTolerance = rhs.halfCarTolerance; << 117 FatalException, "Invalid Length Parameters.");
168 fDx = rhs.fDx; << 118 }
169 fDy = rhs.fDy; <<
170 fDz = rhs.fDz; <<
171 fTalpha = rhs.fTalpha; <<
172 fTthetaCphi = rhs.fTthetaCphi; <<
173 fTthetaSphi = rhs.fTthetaSphi; <<
174 for (G4int i=0; i<4; ++i) { fPlanes[i] = rh <<
175 <<
176 return *this; <<
177 } 119 }
178 120
179 ////////////////////////////////////////////// << 121 ////////////////////////////////////////////////////////////////////////
180 // 122 //
181 // Set all parameters, as for constructor - se << 123 // Constructor - Design of trapezoid based on 8 G4ThreeVector parameters,
>> 124 // which are its vertices. Checking of planarity with preparation of
>> 125 // fPlanes[] and than calculation of other members
182 126
183 void G4Para::SetAllParameters(G4double pDx, G4 << 127 G4Para::G4Para( const G4String& pName,
184 G4double pAlpha, << 128 const G4ThreeVector pt[8] )
>> 129 : G4CSGSolid(pName)
185 { 130 {
186 // Reset data of the base class << 131 if ( pt[0].z()<0 && pt[0].z()==pt[1].z() && pt[0].z()==pt[2].z() &&
187 fCubicVolume = 0; << 132 pt[0].z()==pt[3].z() && pt[4].z()>0 && pt[4].z()==pt[5].z() &&
188 fSurfaceArea = 0; << 133 pt[4].z()==pt[6].z() && pt[4].z()==pt[7].z() &&
189 fRebuildPolyhedron = true; << 134 (pt[0].z()+pt[4].z())==0 &&
190 << 135 pt[0].y()==pt[1].y() && pt[2].y()==pt[3].y() &&
191 // Set parameters << 136 pt[4].y()==pt[5].y() && pt[6].y()==pt[7].y() &&
192 fDx = pDx; << 137 ( pt[0].y() + pt[2].y() + pt[4].y() + pt[6].y() ) == 0 &&
193 fDy = pDy; << 138 ( pt[0].x() + pt[1].x() + pt[4].x() + pt[5].x() ) == 0)
194 fDz = pDz; << 139 {
195 fTalpha = std::tan(pAlpha); << 140 fDz = (pt[7]).z() ;
196 fTthetaCphi = std::tan(pTheta)*std::cos(pPhi << 141
197 fTthetaSphi = std::tan(pTheta)*std::sin(pPhi << 142 fDy = ((pt[2]).y()-(pt[1]).y())*0.5 ;
198 << 143 fDx = ((pt[1]).x()-(pt[0]).x())*0.5 ;
199 CheckParameters(); << 144 fDx = ((pt[3]).x()-(pt[2]).x())*0.5 ;
200 MakePlanes(); << 145 fTalpha = ((pt[2]).x()+(pt[3]).x()-(pt[1]).x()-(pt[0]).x())*0.25/fDy ;
201 } << 146
>> 147 // fDy = ((pt[6]).y()-(pt[5]).y())*0.5 ;
>> 148 // fDx = ((pt[5]).x()-(pt[4]).x())*0.5 ;
>> 149 // fDx = ((pt[7]).x()-(pt[6]).x())*0.5 ;
>> 150 // fTalpha = ((pt[6]).x()+(pt[7]).x()-(pt[5]).x()-(pt[4]).x())*0.25/fDy ;
202 151
203 ////////////////////////////////////////////// << 152 fTthetaCphi = ((pt[4]).x()+fDy*fTalpha+fDx)/fDz ;
204 // << 153 fTthetaSphi = ((pt[4]).y()+fDy)/fDz ;
205 // Check dimensions <<
206 <<
207 void G4Para::CheckParameters() <<
208 { <<
209 if (fDx < 2*kCarTolerance || <<
210 fDy < 2*kCarTolerance || <<
211 fDz < 2*kCarTolerance) <<
212 { <<
213 std::ostringstream message; <<
214 message << "Invalid (too small or negative <<
215 << GetName() <<
216 << "\n X - " << fDx <<
217 << "\n Y - " << fDy <<
218 << "\n Z - " << fDz; <<
219 G4Exception("G4Para::CheckParameters()", " <<
220 FatalException, message); <<
221 } 154 }
>> 155 else
>> 156 {
>> 157 G4cerr << "ERROR - G4Para()::G4Para(): " << GetName() << G4endl
>> 158 << " Invalid dimensions !" << G4endl;
>> 159 G4Exception("G4Para::G4Para()", "InvalidSetup",
>> 160 FatalException, "Invalid vertice coordinates.");
>> 161 }
222 } 162 }
223 163
224 ////////////////////////////////////////////// << 164 ///////////////////////////////////////////////////////////////////////
225 // 165 //
226 // Set side planes << 166 // Fake default constructor - sets only member data and allocates memory
227 << 167 // for usage restricted to object persistency.
228 void G4Para::MakePlanes() <<
229 { <<
230 G4ThreeVector vx(1, 0, 0); <<
231 G4ThreeVector vy(fTalpha, 1, 0); <<
232 G4ThreeVector vz(fTthetaCphi, fTthetaSphi, 1 <<
233 <<
234 // Set -Y & +Y planes <<
235 // <<
236 G4ThreeVector ynorm = (vx.cross(vz)).unit(); <<
237 <<
238 fPlanes[0].a = 0.; <<
239 fPlanes[0].b = ynorm.y(); <<
240 fPlanes[0].c = ynorm.z(); <<
241 fPlanes[0].d = fPlanes[0].b*fDy; // point (0 <<
242 <<
243 fPlanes[1].a = 0.; <<
244 fPlanes[1].b = -fPlanes[0].b; <<
245 fPlanes[1].c = -fPlanes[0].c; <<
246 fPlanes[1].d = fPlanes[0].d; <<
247 <<
248 // Set -X & +X planes <<
249 // <<
250 G4ThreeVector xnorm = (vz.cross(vy)).unit(); <<
251 <<
252 fPlanes[2].a = xnorm.x(); <<
253 fPlanes[2].b = xnorm.y(); <<
254 fPlanes[2].c = xnorm.z(); <<
255 fPlanes[2].d = fPlanes[2].a*fDx; // point (f <<
256 <<
257 fPlanes[3].a = -fPlanes[2].a; <<
258 fPlanes[3].b = -fPlanes[2].b; <<
259 fPlanes[3].c = -fPlanes[2].c; <<
260 fPlanes[3].d = fPlanes[2].d; <<
261 } <<
262 <<
263 ////////////////////////////////////////////// <<
264 // 168 //
265 // Get volume << 169 G4Para::G4Para( __void__& a )
266 << 170 : G4CSGSolid(a)
267 G4double G4Para::GetCubicVolume() <<
268 { 171 {
269 // It is like G4Box, since para transformati <<
270 if (fCubicVolume == 0) <<
271 { <<
272 fCubicVolume = 8*fDx*fDy*fDz; <<
273 } <<
274 return fCubicVolume; <<
275 } 172 }
276 173
277 ////////////////////////////////////////////// 174 //////////////////////////////////////////////////////////////////////////
278 // 175 //
279 // Get surface area <<
280 176
281 G4double G4Para::GetSurfaceArea() << 177 G4Para::~G4Para()
282 { 178 {
283 if(fSurfaceArea == 0) <<
284 { <<
285 G4ThreeVector vx(fDx, 0, 0); <<
286 G4ThreeVector vy(fDy*fTalpha, fDy, 0); <<
287 G4ThreeVector vz(fDz*fTthetaCphi, fDz*fTth <<
288 <<
289 G4double sxy = fDx*fDy; // (vx.cross(vy)). <<
290 G4double sxz = (vx.cross(vz)).mag(); <<
291 G4double syz = (vy.cross(vz)).mag(); <<
292 <<
293 fSurfaceArea = 8*(sxy+sxz+syz); <<
294 } <<
295 return fSurfaceArea; <<
296 } 179 }
297 180
298 ////////////////////////////////////////////// 181 //////////////////////////////////////////////////////////////////////////
299 // 182 //
300 // Dispatch to parameterisation for replicatio 183 // Dispatch to parameterisation for replication mechanism dimension
301 // computation & modification << 184 // computation & modification.
302 185
303 void G4Para::ComputeDimensions( G4VPVPara 186 void G4Para::ComputeDimensions( G4VPVParameterisation* p,
304 const G4int n, 187 const G4int n,
305 const G4VPhysi 188 const G4VPhysicalVolume* pRep )
306 { 189 {
307 p->ComputeDimensions(*this,n,pRep); 190 p->ComputeDimensions(*this,n,pRep);
308 } 191 }
309 192
310 ////////////////////////////////////////////// <<
311 // <<
312 // Get bounding box <<
313 193
314 void G4Para::BoundingLimits(G4ThreeVector& pMi << 194 //////////////////////////////////////////////////////////////
315 { <<
316 G4double dz = GetZHalfLength(); <<
317 G4double dx = GetXHalfLength(); <<
318 G4double dy = GetYHalfLength(); <<
319 <<
320 G4double x0 = dz*fTthetaCphi; <<
321 G4double x1 = dy*GetTanAlpha(); <<
322 G4double xmin = <<
323 std::min( <<
324 std::min( <<
325 std::min(-x0-x1-dx,-x0+x1-dx),x0-x1-dx),x0 <<
326 G4double xmax = <<
327 std::max( <<
328 std::max( <<
329 std::max(-x0-x1+dx,-x0+x1+dx),x0-x1+dx),x0 <<
330 <<
331 G4double y0 = dz*fTthetaSphi; <<
332 G4double ymin = std::min(-y0-dy,y0-dy); <<
333 G4double ymax = std::max(-y0+dy,y0+dy); <<
334 <<
335 pMin.set(xmin,ymin,-dz); <<
336 pMax.set(xmax,ymax, dz); <<
337 <<
338 // Check correctness of the bounding box <<
339 // <<
340 if (pMin.x() >= pMax.x() || pMin.y() >= pMax <<
341 { <<
342 std::ostringstream message; <<
343 message << "Bad bounding box (min >= max) <<
344 << GetName() << " !" <<
345 << "\npMin = " << pMin <<
346 << "\npMax = " << pMax; <<
347 G4Exception("G4Para::BoundingLimits()", "G <<
348 JustWarning, message); <<
349 DumpInfo(); <<
350 } <<
351 } <<
352 <<
353 ////////////////////////////////////////////// <<
354 // 195 //
355 // Calculate extent under transform and specif 196 // Calculate extent under transform and specified limit
356 197
357 G4bool G4Para::CalculateExtent( const EAxis pA 198 G4bool G4Para::CalculateExtent( const EAxis pAxis,
358 const G4VoxelL 199 const G4VoxelLimits& pVoxelLimit,
359 const G4Affine 200 const G4AffineTransform& pTransform,
360 G4double& 201 G4double& pMin, G4double& pMax ) const
361 { 202 {
362 G4ThreeVector bmin, bmax; << 203 G4bool flag;
363 G4bool exist; <<
364 204
365 // Check bounding box (bbox) << 205 if (!pTransform.IsRotated())
366 // << 206 {
367 BoundingLimits(bmin,bmax); << 207 // Special case handling for unrotated trapezoids
368 G4BoundingEnvelope bbox(bmin,bmax); << 208 // Compute z/x/y/ mins and maxs respecting limits, with early returns
369 #ifdef G4BBOX_EXTENT << 209 // if outside limits. Then switch() on pAxis
370 return bbox.CalculateExtent(pAxis,pVoxelLimi << 210
371 #endif << 211 G4int i ;
372 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVox << 212 G4double xoffset,xMin,xMax;
373 { << 213 G4double yoffset,yMin,yMax;
374 return exist = pMin < pMax; << 214 G4double zoffset,zMin,zMax;
375 } << 215 G4double temp[8] ; // some points for intersection with zMin/zMax
>> 216
>> 217 xoffset=pTransform.NetTranslation().x();
>> 218 yoffset=pTransform.NetTranslation().y();
>> 219 zoffset=pTransform.NetTranslation().z();
>> 220
>> 221 G4ThreeVector pt[8]; // vertices after translation
>> 222 pt[0]=G4ThreeVector(xoffset-fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 223 yoffset-fDz*fTthetaSphi-fDy,zoffset-fDz);
>> 224 pt[1]=G4ThreeVector(xoffset-fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 225 yoffset-fDz*fTthetaSphi-fDy,zoffset-fDz);
>> 226 pt[2]=G4ThreeVector(xoffset-fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 227 yoffset-fDz*fTthetaSphi+fDy,zoffset-fDz);
>> 228 pt[3]=G4ThreeVector(xoffset-fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 229 yoffset-fDz*fTthetaSphi+fDy,zoffset-fDz);
>> 230 pt[4]=G4ThreeVector(xoffset+fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 231 yoffset+fDz*fTthetaSphi-fDy,zoffset+fDz);
>> 232 pt[5]=G4ThreeVector(xoffset+fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 233 yoffset+fDz*fTthetaSphi-fDy,zoffset+fDz);
>> 234 pt[6]=G4ThreeVector(xoffset+fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 235 yoffset+fDz*fTthetaSphi+fDy,zoffset+fDz);
>> 236 pt[7]=G4ThreeVector(xoffset+fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 237 yoffset+fDz*fTthetaSphi+fDy,zoffset+fDz);
>> 238 zMin=zoffset-fDz;
>> 239 zMax=zoffset+fDz;
>> 240 if ( pVoxelLimit.IsZLimited() )
>> 241 {
>> 242 if ( (zMin>pVoxelLimit.GetMaxZExtent()+kCarTolerance)
>> 243 || (zMax<pVoxelLimit.GetMinZExtent()-kCarTolerance) )
>> 244 {
>> 245 return false;
>> 246 }
>> 247 else
>> 248 {
>> 249 if (zMin<pVoxelLimit.GetMinZExtent())
>> 250 {
>> 251 zMin=pVoxelLimit.GetMinZExtent();
>> 252 }
>> 253 if (zMax>pVoxelLimit.GetMaxZExtent())
>> 254 {
>> 255 zMax=pVoxelLimit.GetMaxZExtent();
>> 256 }
>> 257 }
>> 258 }
376 259
377 // Set bounding envelope (benv) and calculat << 260 temp[0] = pt[0].y()+(pt[4].y()-pt[0].y())
378 // << 261 *(zMin-pt[0].z())/(pt[4].z()-pt[0].z()) ;
379 G4double dz = GetZHalfLength(); << 262 temp[1] = pt[0].y()+(pt[4].y()-pt[0].y())
380 G4double dx = GetXHalfLength(); << 263 *(zMax-pt[0].z())/(pt[4].z()-pt[0].z()) ;
381 G4double dy = GetYHalfLength(); << 264 temp[2] = pt[2].y()+(pt[6].y()-pt[2].y())
>> 265 *(zMin-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 266 temp[3] = pt[2].y()+(pt[6].y()-pt[2].y())
>> 267 *(zMax-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 268 yMax = yoffset - std::fabs(fDz*fTthetaSphi) - fDy - fDy ;
>> 269 yMin = -yMax ;
>> 270 for(i=0;i<4;i++)
>> 271 {
>> 272 if(temp[i] > yMax) yMax = temp[i] ;
>> 273 if(temp[i] < yMin) yMin = temp[i] ;
>> 274 }
>> 275
>> 276 if (pVoxelLimit.IsYLimited())
>> 277 {
>> 278 if ( (yMin>pVoxelLimit.GetMaxYExtent()+kCarTolerance)
>> 279 || (yMax<pVoxelLimit.GetMinYExtent()-kCarTolerance) )
>> 280 {
>> 281 return false;
>> 282 }
>> 283 else
>> 284 {
>> 285 if (yMin<pVoxelLimit.GetMinYExtent())
>> 286 {
>> 287 yMin=pVoxelLimit.GetMinYExtent();
>> 288 }
>> 289 if (yMax>pVoxelLimit.GetMaxYExtent())
>> 290 {
>> 291 yMax=pVoxelLimit.GetMaxYExtent();
>> 292 }
>> 293 }
>> 294 }
382 295
383 G4double x0 = dz*fTthetaCphi; << 296 temp[0] = pt[0].x()+(pt[4].x()-pt[0].x())
384 G4double x1 = dy*GetTanAlpha(); << 297 *(zMin-pt[0].z())/(pt[4].z()-pt[0].z()) ;
385 G4double y0 = dz*fTthetaSphi; << 298 temp[1] = pt[0].x()+(pt[4].x()-pt[0].x())
>> 299 *(zMax-pt[0].z())/(pt[4].z()-pt[0].z()) ;
>> 300 temp[2] = pt[2].x()+(pt[6].x()-pt[2].x())
>> 301 *(zMin-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 302 temp[3] = pt[2].x()+(pt[6].x()-pt[2].x())
>> 303 *(zMax-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 304 temp[4] = pt[3].x()+(pt[7].x()-pt[3].x())
>> 305 *(zMin-pt[3].z())/(pt[7].z()-pt[3].z()) ;
>> 306 temp[5] = pt[3].x()+(pt[7].x()-pt[3].x())
>> 307 *(zMax-pt[3].z())/(pt[7].z()-pt[3].z()) ;
>> 308 temp[6] = pt[1].x()+(pt[5].x()-pt[1].x())
>> 309 *(zMin-pt[1].z())/(pt[5].z()-pt[1].z()) ;
>> 310 temp[7] = pt[1].x()+(pt[5].x()-pt[1].x())
>> 311 *(zMax-pt[1].z())/(pt[5].z()-pt[1].z()) ;
>> 312
>> 313 xMax = xoffset - std::fabs(fDz*fTthetaCphi) - fDx - fDx -fDx - fDx;
>> 314 xMin = -xMax ;
>> 315 for(i=0;i<8;i++)
>> 316 {
>> 317 if(temp[i] > xMax) xMax = temp[i] ;
>> 318 if(temp[i] < xMin) xMin = temp[i] ;
>> 319 }
>> 320 // xMax/Min = f(yMax/Min) ?
>> 321 if (pVoxelLimit.IsXLimited())
>> 322 {
>> 323 if ( (xMin>pVoxelLimit.GetMaxXExtent()+kCarTolerance)
>> 324 || (xMax<pVoxelLimit.GetMinXExtent()-kCarTolerance) )
>> 325 {
>> 326 return false;
>> 327 }
>> 328 else
>> 329 {
>> 330 if (xMin<pVoxelLimit.GetMinXExtent())
>> 331 {
>> 332 xMin=pVoxelLimit.GetMinXExtent();
>> 333 }
>> 334 if (xMax>pVoxelLimit.GetMaxXExtent())
>> 335 {
>> 336 xMax=pVoxelLimit.GetMaxXExtent();
>> 337 }
>> 338 }
>> 339 }
386 340
387 G4ThreeVectorList baseA(4), baseB(4); << 341 switch (pAxis)
388 baseA[0].set(-x0-x1-dx,-y0-dy,-dz); << 342 {
389 baseA[1].set(-x0-x1+dx,-y0-dy,-dz); << 343 case kXAxis:
390 baseA[2].set(-x0+x1+dx,-y0+dy,-dz); << 344 pMin=xMin;
391 baseA[3].set(-x0+x1-dx,-y0+dy,-dz); << 345 pMax=xMax;
>> 346 break;
>> 347 case kYAxis:
>> 348 pMin=yMin;
>> 349 pMax=yMax;
>> 350 break;
>> 351 case kZAxis:
>> 352 pMin=zMin;
>> 353 pMax=zMax;
>> 354 break;
>> 355 default:
>> 356 break;
>> 357 }
392 358
393 baseB[0].set(+x0-x1-dx, y0-dy, dz); << 359 pMin-=kCarTolerance;
394 baseB[1].set(+x0-x1+dx, y0-dy, dz); << 360 pMax+=kCarTolerance;
395 baseB[2].set(+x0+x1+dx, y0+dy, dz); << 361 flag = true;
396 baseB[3].set(+x0+x1-dx, y0+dy, dz); << 362 }
>> 363 else
>> 364 {
>> 365 // General rotated case - create and clip mesh to boundaries
>> 366
>> 367 G4bool existsAfterClip=false;
>> 368 G4ThreeVectorList *vertices;
397 369
398 std::vector<const G4ThreeVectorList *> polyg << 370 pMin=+kInfinity;
399 polygons[0] = &baseA; << 371 pMax=-kInfinity;
400 polygons[1] = &baseB; <<
401 372
402 G4BoundingEnvelope benv(bmin,bmax,polygons); << 373 // Calculate rotated vertex coordinates
403 exist = benv.CalculateExtent(pAxis,pVoxelLim << 374
404 return exist; << 375 vertices=CreateRotatedVertices(pTransform);
>> 376 ClipCrossSection(vertices,0,pVoxelLimit,pAxis,pMin,pMax);
>> 377 ClipCrossSection(vertices,4,pVoxelLimit,pAxis,pMin,pMax);
>> 378 ClipBetweenSections(vertices,0,pVoxelLimit,pAxis,pMin,pMax);
>> 379
>> 380 if (pMin!=kInfinity||pMax!=-kInfinity)
>> 381 {
>> 382 existsAfterClip=true;
>> 383
>> 384 // Add 2*tolerance to avoid precision troubles
>> 385 //
>> 386 pMin-=kCarTolerance;
>> 387 pMax+=kCarTolerance;
>> 388 }
>> 389 else
>> 390 {
>> 391 // Check for case where completely enveloping clipping volume
>> 392 // If point inside then we are confident that the solid completely
>> 393 // envelopes the clipping volume. Hence set min/max extents according
>> 394 // to clipping volume extents along the specified axis.
>> 395
>> 396 G4ThreeVector clipCentre(
>> 397 (pVoxelLimit.GetMinXExtent()+pVoxelLimit.GetMaxXExtent())*0.5,
>> 398 (pVoxelLimit.GetMinYExtent()+pVoxelLimit.GetMaxYExtent())*0.5,
>> 399 (pVoxelLimit.GetMinZExtent()+pVoxelLimit.GetMaxZExtent())*0.5);
>> 400
>> 401 if (Inside(pTransform.Inverse().TransformPoint(clipCentre))!=kOutside)
>> 402 {
>> 403 existsAfterClip=true;
>> 404 pMin=pVoxelLimit.GetMinExtent(pAxis);
>> 405 pMax=pVoxelLimit.GetMaxExtent(pAxis);
>> 406 }
>> 407 }
>> 408 delete vertices ; // 'new' in the function called
>> 409 flag = existsAfterClip ;
>> 410 }
>> 411 return flag;
405 } 412 }
406 413
407 ////////////////////////////////////////////// << 414 /////////////////////////////////////////////////////////////////////////////
408 // <<
409 // Determine where is point p, inside/on_surfa <<
410 // 415 //
>> 416 // Check in p is inside/on surface/outside solid
411 417
412 EInside G4Para::Inside( const G4ThreeVector& p 418 EInside G4Para::Inside( const G4ThreeVector& p ) const
413 { 419 {
414 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. << 420 G4double xt, yt, yt1;
415 G4double dx = std::abs(xx) + fPlanes[2].d; << 421 EInside in = kOutside;
>> 422
>> 423 yt1 = p.y() - fTthetaSphi*p.z();
>> 424 yt = std::fabs(yt1) ;
416 425
417 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 426 // xt = std::fabs( p.x() - fTthetaCphi*p.z() - fTalpha*yt );
418 G4double dy = std::abs(yy) + fPlanes[0].d; <<
419 G4double dxy = std::max(dx,dy); <<
420 427
421 G4double dz = std::abs(p.z())-fDz; << 428 xt = std::fabs( p.x() - fTthetaCphi*p.z() - fTalpha*yt1 );
422 G4double dist = std::max(dxy,dz); <<
423 429
424 if (dist > halfCarTolerance) return kOutside << 430 if ( std::fabs( p.z() ) <= fDz - kCarTolerance*0.5)
425 return (dist > -halfCarTolerance) ? kSurface << 431 {
>> 432 if (yt <= fDy - kCarTolerance*0.5)
>> 433 {
>> 434 if ( xt <= fDx - kCarTolerance*0.5 ) in = kInside;
>> 435 else if ( xt <= fDx + kCarTolerance*0.5 ) in = kSurface;
>> 436 }
>> 437 else if ( yt <= fDy + kCarTolerance*0.5)
>> 438 {
>> 439 if ( xt <= fDx + kCarTolerance*0.5 ) in = kSurface;
>> 440 }
>> 441 }
>> 442 else if ( std::fabs(p.z()) <= fDz + kCarTolerance*0.5 )
>> 443 {
>> 444 if ( yt <= fDy + kCarTolerance*0.5)
>> 445 {
>> 446 if ( xt <= fDx + kCarTolerance*0.5 ) in = kSurface;
>> 447 }
>> 448 }
>> 449 return in;
426 } 450 }
427 451
428 ////////////////////////////////////////////// << 452 ///////////////////////////////////////////////////////////////////////////
429 // 453 //
430 // Determine side where point is, and return c << 454 // Calculate side nearest to p, and return normal
>> 455 // If 2+ sides equidistant, first side's normal returned (arbitrarily)
431 456
432 G4ThreeVector G4Para::SurfaceNormal( const G4T 457 G4ThreeVector G4Para::SurfaceNormal( const G4ThreeVector& p ) const
433 { 458 {
434 G4int nsurf = 0; // number of surfaces where << 459 G4ThreeVector norm, sumnorm(0.,0.,0.);
>> 460 G4int noSurfaces = 0;
>> 461 G4double distx,disty,distz;
>> 462 G4double newpx,newpy,xshift;
>> 463 G4double calpha,salpha; // Sin/Cos(alpha) - needed to recalc G4Parameter
>> 464 G4double tntheta,cosntheta; // tan and cos of normal's theta component
>> 465 G4double ycomp;
>> 466 G4double delta = 0.5*kCarTolerance;
>> 467
>> 468 newpx = p.x()-fTthetaCphi*p.z();
>> 469 newpy = p.y()-fTthetaSphi*p.z();
>> 470
>> 471 calpha = 1/std::sqrt(1+fTalpha*fTalpha);
>> 472 if (fTalpha) {salpha = -calpha/fTalpha;} // NOTE: using MINUS std::sin(alpha)
>> 473 else {salpha = 0.;}
>> 474
>> 475 // xshift = newpx*calpha+newpy*salpha;
>> 476 xshift = newpx - newpy*fTalpha;
435 477
436 // Check Z faces << 478 // distx = std::fabs(std::fabs(xshift)-fDx*calpha);
437 // << 479 distx = std::fabs(std::fabs(xshift)-fDx);
438 G4double nz = 0; << 480 disty = std::fabs(std::fabs(newpy)-fDy);
439 G4double dz = std::abs(p.z()) - fDz; << 481 distz = std::fabs(std::fabs(p.z())-fDz);
440 if (std::abs(dz) <= halfCarTolerance) <<
441 { <<
442 nz = (p.z() < 0) ? -1 : 1; <<
443 ++nsurf; <<
444 } <<
445 482
446 // Check Y faces << 483 tntheta = fTthetaCphi*calpha + fTthetaSphi*salpha;
447 // << 484 cosntheta = 1/std::sqrt(1+tntheta*tntheta);
448 G4double ny = 0; << 485 ycomp = 1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
449 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 486
450 if (std::abs(fPlanes[0].d + yy) <= halfCarTo << 487 G4ThreeVector nX = G4ThreeVector( calpha*cosntheta,
451 { << 488 salpha*cosntheta,
452 ny = fPlanes[0].b; << 489 -tntheta*cosntheta);
453 nz += fPlanes[0].c; << 490 G4ThreeVector nY = G4ThreeVector( 0, ycomp,-fTthetaSphi*ycomp);
454 ++nsurf; << 491 G4ThreeVector nZ = G4ThreeVector( 0, 0, 1.0);
455 } << 492
456 else if (std::abs(fPlanes[1].d - yy) <= half << 493 if (distx <= delta)
457 { 494 {
458 ny = fPlanes[1].b; << 495 noSurfaces ++;
459 nz += fPlanes[1].c; << 496 if ( xshift >= 0.) {sumnorm += nX;}
460 ++nsurf; << 497 else {sumnorm -= nX;}
461 } 498 }
462 << 499 if (disty <= delta)
463 // Check X faces <<
464 // <<
465 G4double nx = 0; <<
466 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. <<
467 if (std::abs(fPlanes[2].d + xx) <= halfCarTo <<
468 { 500 {
469 nx = fPlanes[2].a; << 501 noSurfaces ++;
470 ny += fPlanes[2].b; << 502 if ( newpy >= 0.) {sumnorm += nY;}
471 nz += fPlanes[2].c; << 503 else {sumnorm -= nY;}
472 ++nsurf; <<
473 } 504 }
474 else if (std::abs(fPlanes[3].d - xx) <= half << 505 if (distz <= delta)
475 { 506 {
476 nx = fPlanes[3].a; << 507 noSurfaces ++;
477 ny += fPlanes[3].b; << 508 if ( p.z() >= 0.) {sumnorm += nZ;}
478 nz += fPlanes[3].c; << 509 else {sumnorm -= nZ;}
479 ++nsurf; <<
480 } 510 }
481 << 511 if ( noSurfaces == 0 )
482 // Return normal <<
483 // <<
484 if (nsurf == 1) return {nx,ny,nz}; <<
485 else if (nsurf != 0) return G4ThreeVector(nx <<
486 else <<
487 { 512 {
488 // Point is not on the surface <<
489 // <<
490 #ifdef G4CSGDEBUG 513 #ifdef G4CSGDEBUG
491 std::ostringstream message; << 514 G4Exception("G4Para::SurfaceNormal(p)", "Notification", JustWarning,
492 G4int oldprc = message.precision(16); << 515 "Point p is not on surface !?" );
493 message << "Point p is not on surface (!?) << 516 #endif
494 << GetName() << G4endl; << 517 norm = ApproxSurfaceNormal(p);
495 message << "Position:\n"; <<
496 message << " p.x() = " << p.x()/mm << " <<
497 message << " p.y() = " << p.y()/mm << " <<
498 message << " p.z() = " << p.z()/mm << " <<
499 G4cout.precision(oldprc) ; <<
500 G4Exception("G4Para::SurfaceNormal(p)", "G <<
501 JustWarning, message ); <<
502 DumpInfo(); <<
503 #endif <<
504 return ApproxSurfaceNormal(p); <<
505 } 518 }
>> 519 else if ( noSurfaces == 1 ) {norm = sumnorm;}
>> 520 else {norm = sumnorm.unit();}
>> 521
>> 522 return norm;
506 } 523 }
507 524
508 ////////////////////////////////////////////// << 525
>> 526 ////////////////////////////////////////////////////////////////////////
509 // 527 //
510 // Algorithm for SurfaceNormal() following the 528 // Algorithm for SurfaceNormal() following the original specification
511 // for points not on the surface 529 // for points not on the surface
512 530
513 G4ThreeVector G4Para::ApproxSurfaceNormal( con 531 G4ThreeVector G4Para::ApproxSurfaceNormal( const G4ThreeVector& p ) const
514 { 532 {
515 G4double dist = -DBL_MAX; << 533 ENSide side;
516 G4int iside = 0; << 534 G4ThreeVector norm;
517 for (G4int i=0; i<4; ++i) << 535 G4double distx,disty,distz;
>> 536 G4double newpx,newpy,xshift;
>> 537 G4double calpha,salpha; // Sin/Cos(alpha) - needed to recalc G4Parameter
>> 538 G4double tntheta,cosntheta; // tan and cos of normal's theta component
>> 539 G4double ycomp;
>> 540
>> 541 newpx=p.x()-fTthetaCphi*p.z();
>> 542 newpy=p.y()-fTthetaSphi*p.z();
>> 543
>> 544 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 545 if (fTalpha)
>> 546 {
>> 547 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 548 }
>> 549 else
518 { 550 {
519 G4double d = fPlanes[i].a*p.x() + << 551 salpha=0;
520 fPlanes[i].b*p.y() + <<
521 fPlanes[i].c*p.z() + fPlanes[ <<
522 if (d > dist) { dist = d; iside = i; } <<
523 } 552 }
524 553
525 G4double distz = std::abs(p.z()) - fDz; << 554 xshift=newpx*calpha+newpy*salpha;
526 if (dist > distz) << 555
527 return { fPlanes[iside].a, fPlanes[iside]. << 556 distx=std::fabs(std::fabs(xshift)-fDx*calpha);
>> 557 disty=std::fabs(std::fabs(newpy)-fDy);
>> 558 distz=std::fabs(std::fabs(p.z())-fDz);
>> 559
>> 560 if (distx<disty)
>> 561 {
>> 562 if (distx<distz) {side=kNX;}
>> 563 else {side=kNZ;}
>> 564 }
528 else 565 else
529 return { 0, 0, (G4double)((p.z() < 0) ? -1 << 566 {
>> 567 if (disty<distz) {side=kNY;}
>> 568 else {side=kNZ;}
>> 569 }
>> 570
>> 571 switch (side)
>> 572 {
>> 573 case kNX:
>> 574 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 575 if (xshift<0)
>> 576 {
>> 577 cosntheta=-1/std::sqrt(1+tntheta*tntheta);
>> 578 }
>> 579 else
>> 580 {
>> 581 cosntheta=1/std::sqrt(1+tntheta*tntheta);
>> 582 }
>> 583 norm=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
>> 584 break;
>> 585 case kNY:
>> 586 if (newpy<0)
>> 587 {
>> 588 ycomp=-1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 589 }
>> 590 else
>> 591 {
>> 592 ycomp=1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 593 }
>> 594 norm=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 595 break;
>> 596 case kNZ: // Closest to Z
>> 597 if (p.z()>=0)
>> 598 {
>> 599 norm=G4ThreeVector(0,0,1);
>> 600 }
>> 601 else
>> 602 {
>> 603 norm=G4ThreeVector(0,0,-1);
>> 604 }
>> 605 break;
>> 606 }
>> 607 return norm;
530 } 608 }
531 609
532 ////////////////////////////////////////////// << 610 //////////////////////////////////////////////////////////////////////////////
533 // 611 //
534 // Calculate distance to shape from outside 612 // Calculate distance to shape from outside
535 // - return kInfinity if no intersection << 613 // - return kInfinity if no intersection
536 << 614 //
537 G4double G4Para::DistanceToIn(const G4ThreeVec << 615 // ALGORITHM:
538 const G4ThreeVec << 616 // For each component, calculate pair of minimum and maximum intersection
539 { << 617 // values for which the particle is in the extent of the shape
540 // Z intersections << 618 // - The smallest (MAX minimum) allowed distance of the pairs is intersect
>> 619 // - Z plane intersectin uses tolerance
>> 620 // - XZ YZ planes use logic & *SLIGHTLY INCORRECT* tolerance
>> 621 // (this saves at least 1 sqrt, 1 multiply and 1 divide... in applicable
>> 622 // cases)
>> 623 // - Note: XZ and YZ planes each divide space into four regions,
>> 624 // characterised by ss1 ss2
>> 625
>> 626 G4double G4Para::DistanceToIn( const G4ThreeVector& p,
>> 627 const G4ThreeVector& v ) const
>> 628 {
>> 629 G4double snxt; // snxt = default return value
>> 630 G4double smin,smax;
>> 631 G4double tmin,tmax;
>> 632 G4double yt,vy,xt,vx;
>> 633 G4double max;
541 // 634 //
542 if ((std::abs(p.z()) - fDz) >= -halfCarToler << 635 // Z Intersection range
543 return kInfinity; <<
544 G4double invz = (-v.z() == 0) ? DBL_MAX : -1 <<
545 G4double dz = (invz < 0) ? fDz : -fDz; <<
546 G4double tzmin = (p.z() + dz)*invz; <<
547 G4double tzmax = (p.z() - dz)*invz; <<
548 <<
549 // Y intersections <<
550 // 636 //
551 G4double tmin0 = tzmin, tmax0 = tzmax; << 637 if (v.z()>0)
552 G4double cos0 = fPlanes[0].b*v.y() + fPlanes <<
553 G4double disy = fPlanes[0].b*p.y() + fPlanes <<
554 G4double dis0 = fPlanes[0].d + disy; <<
555 if (dis0 >= -halfCarTolerance) <<
556 { 638 {
557 if (cos0 >= 0) return kInfinity; << 639 max=fDz-p.z();
558 G4double tmp = -dis0/cos0; << 640 if (max>kCarTolerance*0.5)
559 if (tmin0 < tmp) tmin0 = tmp; << 641 {
>> 642 smax=max/v.z();
>> 643 smin=(-fDz-p.z())/v.z();
>> 644 }
>> 645 else
>> 646 {
>> 647 return snxt=kInfinity;
>> 648 }
560 } 649 }
561 else if (cos0 > 0) << 650 else if (v.z()<0)
>> 651 {
>> 652 max=-fDz-p.z();
>> 653 if (max<-kCarTolerance*0.5)
>> 654 {
>> 655 smax=max/v.z();
>> 656 smin=(fDz-p.z())/v.z();
>> 657 }
>> 658 else
>> 659 {
>> 660 return snxt=kInfinity;
>> 661 }
>> 662 }
>> 663 else
562 { 664 {
563 G4double tmp = -dis0/cos0; << 665 if (std::fabs(p.z())<=fDz) // Inside
564 if (tmax0 > tmp) tmax0 = tmp; << 666 {
>> 667 smin=0;
>> 668 smax=kInfinity;
>> 669 }
>> 670 else
>> 671 {
>> 672 return snxt=kInfinity;
>> 673 }
565 } 674 }
>> 675
>> 676 //
>> 677 // Y G4Parallel planes intersection
>> 678 //
>> 679
>> 680 yt=p.y()-fTthetaSphi*p.z();
>> 681 vy=v.y()-fTthetaSphi*v.z();
566 682
567 G4double tmin1 = tmin0, tmax1 = tmax0; << 683 if (vy>0)
568 G4double cos1 = -cos0; <<
569 G4double dis1 = fPlanes[1].d - disy; <<
570 if (dis1 >= -halfCarTolerance) <<
571 { 684 {
572 if (cos1 >= 0) return kInfinity; << 685 max=fDy-yt;
573 G4double tmp = -dis1/cos1; << 686 if (max>kCarTolerance*0.5)
574 if (tmin1 < tmp) tmin1 = tmp; << 687 {
>> 688 tmax=max/vy;
>> 689 tmin=(-fDy-yt)/vy;
>> 690 }
>> 691 else
>> 692 {
>> 693 return snxt=kInfinity;
>> 694 }
575 } 695 }
576 else if (cos1 > 0) << 696 else if (vy<0)
577 { 697 {
578 G4double tmp = -dis1/cos1; << 698 max=-fDy-yt;
579 if (tmax1 > tmp) tmax1 = tmp; << 699 if (max<-kCarTolerance*0.5)
>> 700 {
>> 701 tmax=max/vy;
>> 702 tmin=(fDy-yt)/vy;
>> 703 }
>> 704 else
>> 705 {
>> 706 return snxt=kInfinity;
>> 707 }
>> 708 }
>> 709 else
>> 710 {
>> 711 if (std::fabs(yt)<=fDy)
>> 712 {
>> 713 tmin=0;
>> 714 tmax=kInfinity;
>> 715 }
>> 716 else
>> 717 {
>> 718 return snxt=kInfinity;
>> 719 }
580 } 720 }
581 721
582 // X intersections << 722 // Re-Calc valid intersection range
583 // 723 //
584 G4double tmin2 = tmin1, tmax2 = tmax1; << 724 if (tmin>smin) smin=tmin;
585 G4double cos2 = fPlanes[2].a*v.x() + fPlanes << 725 if (tmax<smax) smax=tmax;
586 G4double disx = fPlanes[2].a*p.x() + fPlanes << 726 if (smax<=smin)
587 G4double dis2 = fPlanes[2].d + disx; <<
588 if (dis2 >= -halfCarTolerance) <<
589 { 727 {
590 if (cos2 >= 0) return kInfinity; << 728 return snxt=kInfinity;
591 G4double tmp = -dis2/cos2; <<
592 if (tmin2 < tmp) tmin2 = tmp; <<
593 } 729 }
594 else if (cos2 > 0) << 730 else
595 { 731 {
596 G4double tmp = -dis2/cos2; << 732 //
597 if (tmax2 > tmp) tmax2 = tmp; << 733 // X G4Parallel planes intersection
>> 734 //
>> 735 xt=p.x()-fTthetaCphi*p.z()-fTalpha*yt;
>> 736 vx=v.x()-fTthetaCphi*v.z()-fTalpha*vy;
>> 737 if (vx>0)
>> 738 {
>> 739 max=fDx-xt;
>> 740 if (max>kCarTolerance*0.5)
>> 741 {
>> 742 tmax=max/vx;
>> 743 tmin=(-fDx-xt)/vx;
>> 744 }
>> 745 else
>> 746 {
>> 747 return snxt=kInfinity;
>> 748 }
>> 749 }
>> 750 else if (vx<0)
>> 751 {
>> 752 max=-fDx-xt;
>> 753 if (max<-kCarTolerance*0.5)
>> 754 {
>> 755 tmax=max/vx;
>> 756 tmin=(fDx-xt)/vx;
>> 757 }
>> 758 else
>> 759 {
>> 760 return snxt=kInfinity;
>> 761 }
>> 762 }
>> 763 else
>> 764 {
>> 765 if (std::fabs(xt)<=fDx)
>> 766 {
>> 767 tmin=0;
>> 768 tmax=kInfinity;
>> 769 }
>> 770 else
>> 771 {
>> 772 return snxt=kInfinity;
>> 773 }
>> 774 }
>> 775 if (tmin>smin) smin=tmin;
>> 776 if (tmax<smax) smax=tmax;
598 } 777 }
599 778
600 G4double tmin3 = tmin2, tmax3 = tmax2; << 779 if (smax>0&&smin<smax)
601 G4double cos3 = -cos2; <<
602 G4double dis3 = fPlanes[3].d - disx; <<
603 if (dis3 >= -halfCarTolerance) <<
604 { 780 {
605 if (cos3 >= 0) return kInfinity; << 781 if (smin>0)
606 G4double tmp = -dis3/cos3; << 782 {
607 if (tmin3 < tmp) tmin3 = tmp; << 783 snxt=smin;
>> 784 }
>> 785 else
>> 786 {
>> 787 snxt=0;
>> 788 }
608 } 789 }
609 else if (cos3 > 0) << 790 else
610 { 791 {
611 G4double tmp = -dis3/cos3; << 792 snxt=kInfinity;
612 if (tmax3 > tmp) tmax3 = tmp; <<
613 } 793 }
614 << 794 return snxt;
615 // Find distance <<
616 // <<
617 G4double tmin = tmin3, tmax = tmax3; <<
618 if (tmax <= tmin + halfCarTolerance) return <<
619 return (tmin < halfCarTolerance ) ? 0. : tmi <<
620 } 795 }
621 796
622 ////////////////////////////////////////////// << 797 ////////////////////////////////////////////////////////////////////////////
623 // 798 //
624 // Calculate exact shortest distance to any bo 799 // Calculate exact shortest distance to any boundary from outside
625 // - returns 0 is point inside << 800 // - Returns 0 is point inside
626 801
627 G4double G4Para::DistanceToIn( const G4ThreeVe 802 G4double G4Para::DistanceToIn( const G4ThreeVector& p ) const
628 { 803 {
629 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. << 804 G4double safe=0.0;
630 G4double dx = std::abs(xx) + fPlanes[2].d; << 805 G4double distz1,distz2,disty1,disty2,distx1,distx2;
>> 806 G4double trany,cosy,tranx,cosx;
>> 807
>> 808 // Z planes
>> 809 //
>> 810 distz1=p.z()-fDz;
>> 811 distz2=-fDz-p.z();
>> 812 if (distz1>distz2)
>> 813 {
>> 814 safe=distz1;
>> 815 }
>> 816 else
>> 817 {
>> 818 safe=distz2;
>> 819 }
631 820
632 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 821 trany=p.y()-fTthetaSphi*p.z(); // Transformed y into `box' system
633 G4double dy = std::abs(yy) + fPlanes[0].d; <<
634 G4double dxy = std::max(dx,dy); <<
635 822
636 G4double dz = std::abs(p.z())-fDz; << 823 // Transformed x into `box' system
637 G4double dist = std::max(dxy,dz); << 824 //
>> 825 cosy=1.0/std::sqrt(1.0+fTthetaSphi*fTthetaSphi);
>> 826 disty1=(trany-fDy)*cosy;
>> 827 disty2=(-fDy-trany)*cosy;
>> 828
>> 829 if (disty1>safe) safe=disty1;
>> 830 if (disty2>safe) safe=disty2;
638 831
639 return (dist > 0) ? dist : 0.; << 832 tranx=p.x()-fTthetaCphi*p.z()-fTalpha*trany;
>> 833 cosx=1.0/std::sqrt(1.0+fTalpha*fTalpha+fTthetaCphi*fTthetaCphi);
>> 834 distx1=(tranx-fDx)*cosx;
>> 835 distx2=(-fDx-tranx)*cosx;
>> 836
>> 837 if (distx1>safe) safe=distx1;
>> 838 if (distx2>safe) safe=distx2;
>> 839
>> 840 if (safe<0) safe=0;
>> 841 return safe;
640 } 842 }
641 843
642 ////////////////////////////////////////////// 844 //////////////////////////////////////////////////////////////////////////
643 // 845 //
644 // Calculate distance to surface of shape from << 846 // Calculate distance to surface of shape from inside
645 // find normal at exit point << 847 // Calculate distance to x/y/z planes - smallest is exiting distance
646 // - when leaving the surface, return 0 <<
647 848
648 G4double G4Para::DistanceToOut(const G4ThreeVe 849 G4double G4Para::DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v,
649 const G4bool ca 850 const G4bool calcNorm,
650 G4bool* v << 851 G4bool *validNorm, G4ThreeVector *n) const
651 { 852 {
652 // Z intersections << 853 ESide side = kUndef;
>> 854 G4double snxt; // snxt = return value
>> 855 G4double max,tmax;
>> 856 G4double yt,vy,xt,vx;
>> 857
>> 858 G4double ycomp,calpha,salpha,tntheta,cosntheta;
>> 859
>> 860 //
>> 861 // Z Intersections
653 // 862 //
654 if ((std::abs(p.z()) - fDz) >= -halfCarToler << 863
>> 864 if (v.z()>0)
655 { 865 {
656 if (calcNorm) << 866 max=fDz-p.z();
>> 867 if (max>kCarTolerance*0.5)
657 { 868 {
658 *validNorm = true; << 869 snxt=max/v.z();
659 n->set(0, 0, (p.z() < 0) ? -1 : 1); << 870 side=kPZ;
>> 871 }
>> 872 else
>> 873 {
>> 874 if (calcNorm)
>> 875 {
>> 876 *validNorm=true;
>> 877 *n=G4ThreeVector(0,0,1);
>> 878 }
>> 879 return snxt=0;
660 } 880 }
661 return 0.; <<
662 } 881 }
663 G4double vz = v.z(); << 882 else if (v.z()<0)
664 G4double tmax = (vz == 0) ? DBL_MAX : (std:: <<
665 G4int iside = (vz < 0) ? -4 : -2; // little <<
666 <<
667 // Y intersections <<
668 // <<
669 G4double cos0 = fPlanes[0].b*v.y() + fPlanes <<
670 if (cos0 > 0) <<
671 { 883 {
672 G4double dis0 = fPlanes[0].b*p.y() + fPlan << 884 max=-fDz-p.z();
673 if (dis0 >= -halfCarTolerance) << 885 if (max<-kCarTolerance*0.5)
>> 886 {
>> 887 snxt=max/v.z();
>> 888 side=kMZ;
>> 889 }
>> 890 else
674 { 891 {
675 if (calcNorm) 892 if (calcNorm)
676 { 893 {
677 *validNorm = true; << 894 *validNorm=true;
678 n->set(0, fPlanes[0].b, fPlanes[0].c); << 895 *n=G4ThreeVector(0,0,-1);
679 } 896 }
680 return 0.; << 897 return snxt=0;
681 } 898 }
682 G4double tmp = -dis0/cos0; <<
683 if (tmax > tmp) { tmax = tmp; iside = 0; } <<
684 } 899 }
>> 900 else
>> 901 {
>> 902 snxt=kInfinity;
>> 903 }
>> 904
>> 905 //
>> 906 // Y plane intersection
>> 907 //
>> 908
>> 909 yt=p.y()-fTthetaSphi*p.z();
>> 910 vy=v.y()-fTthetaSphi*v.z();
685 911
686 G4double cos1 = -cos0; << 912 if (vy>0)
687 if (cos1 > 0) << 913 {
>> 914 max=fDy-yt;
>> 915 if (max>kCarTolerance*0.5)
>> 916 {
>> 917 tmax=max/vy;
>> 918 if (tmax<snxt)
>> 919 {
>> 920 snxt=tmax;
>> 921 side=kPY;
>> 922 }
>> 923 }
>> 924 else
>> 925 {
>> 926 if (calcNorm)
>> 927 {
>> 928 *validNorm=true; // Leaving via plus Y
>> 929 ycomp=1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 930 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 931 }
>> 932 return snxt=0;
>> 933 }
>> 934 }
>> 935 else if (vy<0)
688 { 936 {
689 G4double dis1 = fPlanes[1].b*p.y() + fPlan << 937 max=-fDy-yt;
690 if (dis1 >= -halfCarTolerance) << 938 if (max<-kCarTolerance*0.5)
>> 939 {
>> 940 tmax=max/vy;
>> 941 if (tmax<snxt)
>> 942 {
>> 943 snxt=tmax;
>> 944 side=kMY;
>> 945 }
>> 946 }
>> 947 else
691 { 948 {
692 if (calcNorm) 949 if (calcNorm)
693 { 950 {
694 *validNorm = true; << 951 *validNorm=true; // Leaving via minus Y
695 n->set(0, fPlanes[1].b, fPlanes[1].c); << 952 ycomp=-1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 953 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
696 } 954 }
697 return 0.; << 955 return snxt=0;
698 } 956 }
699 G4double tmp = -dis1/cos1; <<
700 if (tmax > tmp) { tmax = tmp; iside = 1; } <<
701 } 957 }
702 958
703 // X intersections <<
704 // 959 //
705 G4double cos2 = fPlanes[2].a*v.x() + fPlanes << 960 // X plane intersection
706 if (cos2 > 0) << 961 //
>> 962
>> 963 xt=p.x()-fTthetaCphi*p.z()-fTalpha*yt;
>> 964 vx=v.x()-fTthetaCphi*v.z()-fTalpha*vy;
>> 965 if (vx>0)
707 { 966 {
708 G4double dis2 = fPlanes[2].a*p.x()+fPlanes << 967 max=fDx-xt;
709 if (dis2 >= -halfCarTolerance) << 968 if (max>kCarTolerance*0.5)
>> 969 {
>> 970 tmax=max/vx;
>> 971 if (tmax<snxt)
>> 972 {
>> 973 snxt=tmax;
>> 974 side=kPX;
>> 975 }
>> 976 }
>> 977 else
710 { 978 {
711 if (calcNorm) 979 if (calcNorm)
712 { 980 {
713 *validNorm = true; << 981 *validNorm=true; // Leaving via plus X
714 n->set(fPlanes[2].a, fPlanes[2].b, fP << 982 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 983 if (fTalpha)
>> 984 {
>> 985 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 986 }
>> 987 else
>> 988 {
>> 989 salpha=0;
>> 990 }
>> 991 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 992 cosntheta=1/std::sqrt(1+tntheta*tntheta);
>> 993 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
715 } 994 }
716 return 0.; << 995 return snxt=0;
717 } 996 }
718 G4double tmp = -dis2/cos2; <<
719 if (tmax > tmp) { tmax = tmp; iside = 2; } <<
720 } 997 }
721 << 998 else if (vx<0)
722 G4double cos3 = -cos2; <<
723 if (cos3 > 0) <<
724 { 999 {
725 G4double dis3 = fPlanes[3].a*p.x()+fPlanes << 1000 max=-fDx-xt;
726 if (dis3 >= -halfCarTolerance) << 1001 if (max<-kCarTolerance*0.5)
>> 1002 {
>> 1003 tmax=max/vx;
>> 1004 if (tmax<snxt)
>> 1005 {
>> 1006 snxt=tmax;
>> 1007 side=kMX;
>> 1008 }
>> 1009 }
>> 1010 else
727 { 1011 {
728 if (calcNorm) 1012 if (calcNorm)
729 { 1013 {
730 *validNorm = true; << 1014 *validNorm=true; // Leaving via minus X
731 n->set(fPlanes[3].a, fPlanes[3].b, fP << 1015 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1016 if (fTalpha)
>> 1017 {
>> 1018 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1019 }
>> 1020 else
>> 1021 {
>> 1022 salpha=0;
>> 1023 }
>> 1024 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1025 cosntheta=-1/std::sqrt(1+tntheta*tntheta);
>> 1026 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
732 } 1027 }
733 return 0.; << 1028 return snxt=0;
734 } 1029 }
735 G4double tmp = -dis3/cos3; <<
736 if (tmax > tmp) { tmax = tmp; iside = 3; } <<
737 } 1030 }
738 1031
739 // Set normal, if required, and return dista << 1032 if (calcNorm)
740 // <<
741 if (calcNorm) <<
742 { 1033 {
743 *validNorm = true; << 1034 *validNorm=true;
744 if (iside < 0) << 1035 switch (side)
745 n->set(0, 0, iside + 3); // (-4+3)=-1, ( << 1036 {
746 else << 1037 case kMZ:
747 n->set(fPlanes[iside].a, fPlanes[iside]. << 1038 *n=G4ThreeVector(0,0,-1);
>> 1039 break;
>> 1040 case kPZ:
>> 1041 *n=G4ThreeVector(0,0,1);
>> 1042 break;
>> 1043 case kMY:
>> 1044 ycomp=-1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 1045 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 1046 break;
>> 1047 case kPY:
>> 1048 ycomp=1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 1049 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 1050 break;
>> 1051 case kMX:
>> 1052 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1053 if (fTalpha)
>> 1054 {
>> 1055 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1056 }
>> 1057 else
>> 1058 {
>> 1059 salpha=0;
>> 1060 }
>> 1061 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1062 cosntheta=-1/std::sqrt(1+tntheta*tntheta);
>> 1063 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
>> 1064 break;
>> 1065 case kPX:
>> 1066 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1067 if (fTalpha)
>> 1068 {
>> 1069 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1070 }
>> 1071 else
>> 1072 {
>> 1073 salpha=0;
>> 1074 }
>> 1075 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1076 cosntheta=1/std::sqrt(1+tntheta*tntheta);
>> 1077 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
>> 1078 break;
>> 1079 default:
>> 1080 DumpInfo();
>> 1081 G4Exception("G4Para::DistanceToOut(p,v,..)","Notification",JustWarning,
>> 1082 "Undefined side for valid surface normal to solid.");
>> 1083 break;
>> 1084 }
748 } 1085 }
749 return tmax; << 1086 return snxt;
750 } 1087 }
751 1088
752 ////////////////////////////////////////////// << 1089 /////////////////////////////////////////////////////////////////////////////
753 // 1090 //
754 // Calculate exact shortest distance to any bo 1091 // Calculate exact shortest distance to any boundary from inside
755 // - returns 0 is point outside << 1092 // - Returns 0 is point outside
756 1093
757 G4double G4Para::DistanceToOut( const G4ThreeV 1094 G4double G4Para::DistanceToOut( const G4ThreeVector& p ) const
758 { 1095 {
>> 1096 G4double safe=0.0;
>> 1097 G4double distz1,distz2,disty1,disty2,distx1,distx2;
>> 1098 G4double trany,cosy,tranx,cosx;
>> 1099
759 #ifdef G4CSGDEBUG 1100 #ifdef G4CSGDEBUG
760 if( Inside(p) == kOutside ) 1101 if( Inside(p) == kOutside )
761 { 1102 {
762 std::ostringstream message; << 1103 G4cout.precision(16) ;
763 G4int oldprc = message.precision(16); << 1104 G4cout << G4endl ;
764 message << "Point p is outside (!?) of sol << 1105 DumpInfo();
765 message << "Position:\n"; << 1106 G4cout << "Position:" << G4endl << G4endl ;
766 message << " p.x() = " << p.x()/mm << " << 1107 G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl ;
767 message << " p.y() = " << p.y()/mm << " << 1108 G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl ;
768 message << " p.z() = " << p.z()/mm << " << 1109 G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl ;
769 G4cout.precision(oldprc) ; << 1110 G4Exception("G4Para::DistanceToOut(p)", "Notification",
770 G4Exception("G4Para::DistanceToOut(p)", "G << 1111 JustWarning, "Point p is outside !?" );
771 JustWarning, message ); << 1112 }
772 DumpInfo(); <<
773 } <<
774 #endif 1113 #endif
775 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. <<
776 G4double dx = std::abs(xx) + fPlanes[2].d; <<
777 1114
778 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 1115 // Z planes
779 G4double dy = std::abs(yy) + fPlanes[0].d; << 1116 //
780 G4double dxy = std::max(dx,dy); << 1117 distz1=fDz-p.z();
781 << 1118 distz2=fDz+p.z();
782 G4double dz = std::abs(p.z())-fDz; << 1119 if (distz1<distz2)
783 G4double dist = std::max(dxy,dz); << 1120 {
>> 1121 safe=distz1;
>> 1122 }
>> 1123 else
>> 1124 {
>> 1125 safe=distz2;
>> 1126 }
784 1127
785 return (dist < 0) ? -dist : 0.; << 1128 trany=p.y()-fTthetaSphi*p.z(); // Transformed y into `box' system
786 } <<
787 1129
788 ////////////////////////////////////////////// << 1130 // Transformed x into `box' system
789 // << 1131 //
790 // GetEntityType << 1132 cosy=1.0/std::sqrt(1.0+fTthetaSphi*fTthetaSphi);
>> 1133 disty1=(fDy-trany)*cosy;
>> 1134 disty2=(fDy+trany)*cosy;
>> 1135
>> 1136 if (disty1<safe) safe=disty1;
>> 1137 if (disty2<safe) safe=disty2;
791 1138
792 G4GeometryType G4Para::GetEntityType() const << 1139 tranx=p.x()-fTthetaCphi*p.z()-fTalpha*trany;
793 { << 1140 cosx=1.0/std::sqrt(1.0+fTalpha*fTalpha+fTthetaCphi*fTthetaCphi);
794 return {"G4Para"}; << 1141 distx1=(fDx-tranx)*cosx;
>> 1142 distx2=(fDx+tranx)*cosx;
>> 1143
>> 1144 if (distx1<safe) safe=distx1;
>> 1145 if (distx2<safe) safe=distx2;
>> 1146
>> 1147 if (safe<0) safe=0;
>> 1148 return safe;
795 } 1149 }
796 1150
797 ////////////////////////////////////////////// << 1151 ////////////////////////////////////////////////////////////////////////////////
798 // 1152 //
799 // IsFaceted << 1153 // Create a List containing the transformed vertices
800 << 1154 // Ordering [0-3] -fDz cross section
801 G4bool G4Para::IsFaceted() const << 1155 // [4-7] +fDz cross section such that [0] is below [4],
802 { << 1156 // [1] below [5] etc.
803 return true; << 1157 // Note:
>> 1158 // Caller has deletion resposibility
>> 1159
>> 1160 G4ThreeVectorList*
>> 1161 G4Para::CreateRotatedVertices( const G4AffineTransform& pTransform ) const
>> 1162 {
>> 1163 G4ThreeVectorList *vertices;
>> 1164 vertices=new G4ThreeVectorList();
>> 1165 vertices->reserve(8);
>> 1166 if (vertices)
>> 1167 {
>> 1168 G4ThreeVector vertex0(-fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1169 -fDz*fTthetaSphi-fDy, -fDz);
>> 1170 G4ThreeVector vertex1(-fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1171 -fDz*fTthetaSphi-fDy, -fDz);
>> 1172 G4ThreeVector vertex2(-fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1173 -fDz*fTthetaSphi+fDy, -fDz);
>> 1174 G4ThreeVector vertex3(-fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1175 -fDz*fTthetaSphi+fDy, -fDz);
>> 1176 G4ThreeVector vertex4(+fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1177 +fDz*fTthetaSphi-fDy, +fDz);
>> 1178 G4ThreeVector vertex5(+fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1179 +fDz*fTthetaSphi-fDy, +fDz);
>> 1180 G4ThreeVector vertex6(+fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1181 +fDz*fTthetaSphi+fDy, +fDz);
>> 1182 G4ThreeVector vertex7(+fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1183 +fDz*fTthetaSphi+fDy, +fDz);
>> 1184
>> 1185 vertices->push_back(pTransform.TransformPoint(vertex0));
>> 1186 vertices->push_back(pTransform.TransformPoint(vertex1));
>> 1187 vertices->push_back(pTransform.TransformPoint(vertex2));
>> 1188 vertices->push_back(pTransform.TransformPoint(vertex3));
>> 1189 vertices->push_back(pTransform.TransformPoint(vertex4));
>> 1190 vertices->push_back(pTransform.TransformPoint(vertex5));
>> 1191 vertices->push_back(pTransform.TransformPoint(vertex6));
>> 1192 vertices->push_back(pTransform.TransformPoint(vertex7));
>> 1193 }
>> 1194 else
>> 1195 {
>> 1196 DumpInfo();
>> 1197 G4Exception("G4Para::CreateRotatedVertices()",
>> 1198 "FatalError", FatalException,
>> 1199 "Error in allocation of vertices. Out of memory !");
>> 1200 }
>> 1201 return vertices;
804 } 1202 }
805 1203
806 ////////////////////////////////////////////// 1204 //////////////////////////////////////////////////////////////////////////
807 // 1205 //
808 // Make a clone of the object << 1206 // GetEntityType
809 // << 1207
810 G4VSolid* G4Para::Clone() const << 1208 G4GeometryType G4Para::GetEntityType() const
811 { 1209 {
812 return new G4Para(*this); << 1210 return G4String("G4Para");
813 } 1211 }
814 1212
815 ////////////////////////////////////////////// 1213 //////////////////////////////////////////////////////////////////////////
816 // 1214 //
817 // Stream object contents to an output stream 1215 // Stream object contents to an output stream
818 1216
819 std::ostream& G4Para::StreamInfo( std::ostream 1217 std::ostream& G4Para::StreamInfo( std::ostream& os ) const
820 { 1218 {
821 G4double alpha = std::atan(fTalpha); <<
822 G4double theta = std::atan(std::sqrt(fTtheta <<
823 fTtheta <<
824 G4double phi = std::atan2(fTthetaSphi,fTth <<
825 <<
826 G4long oldprc = os.precision(16); <<
827 os << "------------------------------------- 1219 os << "-----------------------------------------------------------\n"
828 << " *** Dump for solid - " << GetName 1220 << " *** Dump for solid - " << GetName() << " ***\n"
829 << " ================================= 1221 << " ===================================================\n"
830 << " Solid type: G4Para\n" 1222 << " Solid type: G4Para\n"
831 << " Parameters:\n" << 1223 << " Parameters: \n"
832 << " half length X: " << fDx/mm << " m << 1224 << " half length X: " << fDx/mm << " mm \n"
833 << " half length Y: " << fDy/mm << " m << 1225 << " half length Y: " << fDy/mm << " mm \n"
834 << " half length Z: " << fDz/mm << " m << 1226 << " half length Z: " << fDz/mm << " mm \n"
835 << " alpha: " << alpha/degree << "degr << 1227 << " std::tan(alpha) : " << fTalpha/degree << " degrees \n"
836 << " theta: " << theta/degree << "degr << 1228 << " std::tan(theta)*std::cos(phi): " << fTthetaCphi/degree
837 << " phi: " << phi/degree << "degrees\ << 1229 << " degrees \n"
>> 1230 << " std::tan(theta)*std::sin(phi): " << fTthetaSphi/degree
>> 1231 << " degrees \n"
838 << "------------------------------------- 1232 << "-----------------------------------------------------------\n";
839 os.precision(oldprc); <<
840 1233
841 return os; 1234 return os;
842 } 1235 }
843 1236
844 ////////////////////////////////////////////// << 1237 //////////////////////////////////////////////////////////////////////////////
>> 1238 //
>> 1239 // GetPointOnPlane
>> 1240 // Auxiliary method for Get Point on Surface
845 // 1241 //
846 // Return a point randomly and uniformly selec <<
847 1242
848 G4ThreeVector G4Para::GetPointOnSurface() cons << 1243 G4ThreeVector G4Para::GetPointOnPlane(G4ThreeVector p0, G4ThreeVector p1,
>> 1244 G4ThreeVector p2, G4ThreeVector p3,
>> 1245 G4double& area) const
849 { 1246 {
850 G4double DyTalpha = fDy*fTalpha; << 1247 G4double lambda1, lambda2, chose, aOne, aTwo;
851 G4double DzTthetaSphi = fDz*fTthetaSphi; << 1248 G4ThreeVector t, u, v, w, Area, normal;
852 G4double DzTthetaCphi = fDz*fTthetaCphi; <<
853 <<
854 // Set vertices <<
855 // <<
856 G4ThreeVector pt[8]; <<
857 pt[0].set(-DzTthetaCphi-DyTalpha-fDx, -DzTth <<
858 pt[1].set(-DzTthetaCphi-DyTalpha+fDx, -DzTth <<
859 pt[2].set(-DzTthetaCphi+DyTalpha-fDx, -DzTth <<
860 pt[3].set(-DzTthetaCphi+DyTalpha+fDx, -DzTth <<
861 pt[4].set( DzTthetaCphi-DyTalpha-fDx, DzTth <<
862 pt[5].set( DzTthetaCphi-DyTalpha+fDx, DzTth <<
863 pt[6].set( DzTthetaCphi+DyTalpha-fDx, DzTth <<
864 pt[7].set( DzTthetaCphi+DyTalpha+fDx, DzTth <<
865 <<
866 // Set areas (-Z, -Y, +Y, -X, +X, +Z) <<
867 // <<
868 G4ThreeVector vx(fDx, 0, 0); <<
869 G4ThreeVector vy(DyTalpha, fDy, 0); <<
870 G4ThreeVector vz(DzTthetaCphi, DzTthetaSphi, <<
871 <<
872 G4double sxy = fDx*fDy; // (vx.cross(vy)).ma <<
873 G4double sxz = (vx.cross(vz)).mag(); <<
874 G4double syz = (vy.cross(vz)).mag(); <<
875 1249
876 G4double sface[6] = { sxy, syz, syz, sxz, sx << 1250 t = p1 - p0;
877 for (G4int i=1; i<6; ++i) { sface[i] += sfac << 1251 u = p2 - p1;
>> 1252 v = p3 - p2;
>> 1253 w = p0 - p3;
>> 1254
>> 1255 Area = G4ThreeVector(w.y()*v.z() - w.z()*v.y(),
>> 1256 w.z()*v.x() - w.x()*v.z(),
>> 1257 w.x()*v.y() - w.y()*v.x());
>> 1258
>> 1259 aOne = 0.5*Area.mag();
>> 1260
>> 1261 Area = G4ThreeVector(t.y()*u.z() - t.z()*u.y(),
>> 1262 t.z()*u.x() - t.x()*u.z(),
>> 1263 t.x()*u.y() - t.y()*u.x());
>> 1264
>> 1265 aTwo = 0.5*Area.mag();
>> 1266
>> 1267 area = aOne + aTwo;
>> 1268
>> 1269 chose = RandFlat::shoot(0.,aOne+aTwo);
878 1270
879 // Select face << 1271 if( (chose>=0.) && (chose < aOne) )
880 // << 1272 {
881 G4double select = sface[5]*G4UniformRand(); << 1273 lambda1 = RandFlat::shoot(0.,1.);
882 G4int k = 5; << 1274 lambda2 = RandFlat::shoot(0.,lambda1);
883 if (select <= sface[4]) k = 4; << 1275 return (p2+lambda1*v+lambda2*w);
884 if (select <= sface[3]) k = 3; << 1276 }
885 if (select <= sface[2]) k = 2; << 1277
886 if (select <= sface[1]) k = 1; << 1278 // else
887 if (select <= sface[0]) k = 0; << 1279
888 << 1280 lambda1 = RandFlat::shoot(0.,1.);
889 // Generate point << 1281 lambda2 = RandFlat::shoot(0.,lambda1);
890 // << 1282 return (p0+lambda1*t+lambda2*u);
891 G4int ip[6][3] = {{0,1,2}, {0,4,1}, {2,3,6}, <<
892 G4double u = G4UniformRand(); <<
893 G4double v = G4UniformRand(); <<
894 return (1.-u-v)*pt[ip[k][0]] + u*pt[ip[k][1] <<
895 } 1283 }
896 1284
897 ////////////////////////////////////////////// << 1285 /////////////////////////////////////////////////////////////////////////
>> 1286 //
>> 1287 // GetPointOnSurface
>> 1288 //
>> 1289 // Return a point (G4ThreeVector) randomly and uniformly
>> 1290 // selected on the solid surface
>> 1291
>> 1292 G4ThreeVector G4Para::GetPointOnSurface() const
>> 1293 {
>> 1294 G4ThreeVector One, Two, Three, Four, Five, Six;
>> 1295 G4ThreeVector pt[8] ;
>> 1296 G4double chose, aOne, aTwo, aThree, aFour, aFive, aSix;
>> 1297
>> 1298 pt[0] = G4ThreeVector(-fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1299 -fDz*fTthetaSphi-fDy, -fDz);
>> 1300 pt[1] = G4ThreeVector(-fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1301 -fDz*fTthetaSphi-fDy, -fDz);
>> 1302 pt[2] = G4ThreeVector(-fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1303 -fDz*fTthetaSphi+fDy, -fDz);
>> 1304 pt[3] = G4ThreeVector(-fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1305 -fDz*fTthetaSphi+fDy, -fDz);
>> 1306 pt[4] = G4ThreeVector(+fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1307 +fDz*fTthetaSphi-fDy, +fDz);
>> 1308 pt[5] = G4ThreeVector(+fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1309 +fDz*fTthetaSphi-fDy, +fDz);
>> 1310 pt[6] = G4ThreeVector(+fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1311 +fDz*fTthetaSphi+fDy, +fDz);
>> 1312 pt[7] = G4ThreeVector(+fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1313 +fDz*fTthetaSphi+fDy, +fDz);
>> 1314
>> 1315 // make sure we provide the points in a clockwise fashion
>> 1316
>> 1317 One = GetPointOnPlane(pt[0],pt[1],pt[3],pt[2], aOne);
>> 1318 Two = GetPointOnPlane(pt[4],pt[5],pt[7],pt[6], aTwo);
>> 1319 Three = GetPointOnPlane(pt[6],pt[7],pt[3],pt[2], aThree);
>> 1320 Four = GetPointOnPlane(pt[4],pt[5],pt[1],pt[0], aFour);
>> 1321 Five = GetPointOnPlane(pt[0],pt[2],pt[6],pt[4], aFive);
>> 1322 Six = GetPointOnPlane(pt[1],pt[3],pt[7],pt[5], aSix);
>> 1323
>> 1324 chose = RandFlat::shoot(0.,aOne+aTwo+aThree+aFour+aFive+aSix);
>> 1325
>> 1326 if( (chose>=0.) && (chose<aOne) )
>> 1327 { return One; }
>> 1328 else if(chose>=aOne && chose<aOne+aTwo)
>> 1329 { return Two; }
>> 1330 else if(chose>=aOne+aTwo && chose<aOne+aTwo+aThree)
>> 1331 { return Three; }
>> 1332 else if(chose>=aOne+aTwo+aThree && chose<aOne+aTwo+aThree+aFour)
>> 1333 { return Four; }
>> 1334 else if(chose>=aOne+aTwo+aThree+aFour && chose<aOne+aTwo+aThree+aFour+aFive)
>> 1335 { return Five; }
>> 1336 return Six;
>> 1337 }
>> 1338
>> 1339 ////////////////////////////////////////////////////////////////////////////
898 // 1340 //
899 // Methods for visualisation 1341 // Methods for visualisation
900 1342
901 void G4Para::DescribeYourselfTo ( G4VGraphicsS 1343 void G4Para::DescribeYourselfTo ( G4VGraphicsScene& scene ) const
902 { 1344 {
903 scene.AddSolid (*this); 1345 scene.AddSolid (*this);
904 } 1346 }
905 1347
906 G4Polyhedron* G4Para::CreatePolyhedron () cons 1348 G4Polyhedron* G4Para::CreatePolyhedron () const
907 { 1349 {
908 G4double phi = std::atan2(fTthetaSphi, fTthe 1350 G4double phi = std::atan2(fTthetaSphi, fTthetaCphi);
909 G4double alpha = std::atan(fTalpha); 1351 G4double alpha = std::atan(fTalpha);
910 G4double theta = std::atan(std::sqrt(fTtheta << 1352 G4double theta = std::atan(std::sqrt(fTthetaCphi*fTthetaCphi
911 fTtheta << 1353 +fTthetaSphi*fTthetaSphi));
912 1354
913 return new G4PolyhedronPara(fDx, fDy, fDz, a 1355 return new G4PolyhedronPara(fDx, fDy, fDz, alpha, theta, phi);
914 } 1356 }
915 #endif << 1357
>> 1358 G4NURBS* G4Para::CreateNURBS () const
>> 1359 {
>> 1360 // return new G4NURBSbox (fDx, fDy, fDz);
>> 1361 return 0 ;
>> 1362 }
916 1363