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25 // 25 //
>> 26 //
>> 27 // $Id: G4Para.cc 83572 2014-09-01 15:23:27Z gcosmo $
>> 28 //
>> 29 // class G4Para
>> 30 //
26 // Implementation for G4Para class 31 // Implementation for G4Para class
27 // 32 //
28 // 21.03.95 P.Kent: Modified for `tolerant' ge << 33 // History:
>> 34 //
>> 35 // 23.10.05 V.Grichine: bug fixed in DistanceToOut(p,v,...) for the v.x()<0 case
>> 36 // 28.04.05 V.Grichine: new SurfaceNormal according to J. Apostolakis proposal
>> 37 // 30.11.04 V.Grichine: modifications in SurfaceNormal for edges/vertices and
>> 38 // in constructor with vertices
>> 39 // 14.02.02 V.Grichine: bug fixed in Inside according to proposal of D.Wright
>> 40 // 18.11.99 V.Grichine: kUndef was added to ESide
29 // 31.10.96 V.Grichine: Modifications accordin 41 // 31.10.96 V.Grichine: Modifications according G4Box/Tubs before to commit
30 // 28.04.05 V.Grichine: new SurfaceNormal acco << 42 // 21.03.95 P.Kent: Modified for `tolerant' geom
31 // 29.05.17 E.Tcherniaev: complete revision, s << 43 //
32 ////////////////////////////////////////////// 44 ////////////////////////////////////////////////////////////////////////////
33 45
34 #include "G4Para.hh" 46 #include "G4Para.hh"
35 47
36 #if !defined(G4GEOM_USE_UPARA) <<
37 <<
38 #include "G4VoxelLimits.hh" 48 #include "G4VoxelLimits.hh"
39 #include "G4AffineTransform.hh" 49 #include "G4AffineTransform.hh"
40 #include "G4BoundingEnvelope.hh" <<
41 #include "Randomize.hh" 50 #include "Randomize.hh"
42 51
43 #include "G4VPVParameterisation.hh" 52 #include "G4VPVParameterisation.hh"
44 53
45 #include "G4VGraphicsScene.hh" 54 #include "G4VGraphicsScene.hh"
46 55
47 using namespace CLHEP; 56 using namespace CLHEP;
48 57
49 ////////////////////////////////////////////// << 58 // Private enum: Not for external use
>> 59
>> 60 enum ESide {kUndef,kPX,kMX,kPY,kMY,kPZ,kMZ};
>> 61
>> 62 // used internally for normal routine
>> 63
>> 64 enum ENSide {kNZ,kNX,kNY};
>> 65
>> 66 /////////////////////////////////////////////////////////////////////
>> 67 //
>> 68 // Constructor - check and set half-widths
>> 69
>> 70 void G4Para::SetAllParameters( G4double pDx, G4double pDy, G4double pDz,
>> 71 G4double pAlpha, G4double pTheta, G4double pPhi )
>> 72 {
>> 73 if ( pDx > 0 && pDy > 0 && pDz > 0 )
>> 74 {
>> 75 fDx = pDx;
>> 76 fDy = pDy;
>> 77 fDz = pDz;
>> 78 fTalpha = std::tan(pAlpha);
>> 79 fTthetaCphi = std::tan(pTheta)*std::cos(pPhi);
>> 80 fTthetaSphi = std::tan(pTheta)*std::sin(pPhi);
>> 81 }
>> 82 else
>> 83 {
>> 84 std::ostringstream message;
>> 85 message << "Invalid Length Parameters for Solid: " << GetName() << G4endl
>> 86 << " pDx, pDy, pDz = "
>> 87 << pDx << ", " << pDy << ", " << pDz;
>> 88 G4Exception("G4Para::SetAllParameters()", "GeomSolids0002",
>> 89 FatalException, message);
>> 90 }
>> 91 fCubicVolume = 0.;
>> 92 fSurfaceArea = 0.;
>> 93 }
>> 94
>> 95 ///////////////////////////////////////////////////////////////////////////
50 // 96 //
51 // Constructor - set & check half widths <<
52 97
53 G4Para::G4Para(const G4String& pName, 98 G4Para::G4Para(const G4String& pName,
54 G4double pDx, G4double pD 99 G4double pDx, G4double pDy, G4double pDz,
55 G4double pAlpha, G4double 100 G4double pAlpha, G4double pTheta, G4double pPhi)
56 : G4CSGSolid(pName), halfCarTolerance(0.5*kC << 101 : G4CSGSolid(pName)
57 { 102 {
58 SetAllParameters(pDx, pDy, pDz, pAlpha, pThe << 103 if ((pDx<=0) || (pDy<=0) || (pDz<=0))
59 fRebuildPolyhedron = false; // default valu << 104 {
>> 105 std::ostringstream message;
>> 106 message << "Invalid Length Parameters for Solid: " << GetName() << G4endl
>> 107 << " pDx, pDy, pDz = "
>> 108 << pDx << ", " << pDy << ", " << pDz;
>> 109 G4Exception("G4Para::G4Para()", "GeomSolids0002",
>> 110 FatalException, message);
>> 111 }
>> 112 SetAllParameters( pDx, pDy, pDz, pAlpha, pTheta, pPhi);
60 } 113 }
61 114
62 ////////////////////////////////////////////// << 115 ////////////////////////////////////////////////////////////////////////
63 // 116 //
64 // Constructor - design of trapezoid based on << 117 // Constructor - Design of trapezoid based on 8 G4ThreeVector parameters,
>> 118 // which are its vertices. Checking of planarity with preparation of
>> 119 // fPlanes[] and than calculation of other members
65 120
66 G4Para::G4Para( const G4String& pName, 121 G4Para::G4Para( const G4String& pName,
67 const G4ThreeVector pt[8] ) 122 const G4ThreeVector pt[8] )
68 : G4CSGSolid(pName), halfCarTolerance(0.5*kC << 123 : G4CSGSolid(pName)
69 { 124 {
70 // Find dimensions and trigonometric values << 125 if (!( pt[0].z()<0 && pt[0].z()==pt[1].z() && pt[0].z()==pt[2].z() &&
71 // << 126 pt[0].z()==pt[3].z() && pt[4].z()>0 && pt[4].z()==pt[5].z() &&
72 fDx = (pt[3].x() - pt[2].x())*0.5; << 127 pt[4].z()==pt[6].z() && pt[4].z()==pt[7].z() &&
73 fDy = (pt[2].y() - pt[1].y())*0.5; << 128 (pt[0].z()+pt[4].z())==0 &&
74 fDz = pt[7].z(); << 129 pt[0].y()==pt[1].y() && pt[2].y()==pt[3].y() &&
75 CheckParameters(); // check dimensions << 130 pt[4].y()==pt[5].y() && pt[6].y()==pt[7].y() &&
76 << 131 ( pt[0].y() + pt[2].y() + pt[4].y() + pt[6].y() ) == 0 &&
77 fTalpha = (pt[2].x() + pt[3].x() - pt[1].x() << 132 ( pt[0].x() + pt[1].x() + pt[4].x() + pt[5].x() ) == 0) )
78 fTthetaCphi = (pt[4].x() + fDy*fTalpha + fDx << 133 {
79 fTthetaSphi = (pt[4].y() + fDy)/fDz; << 134 std::ostringstream message;
80 MakePlanes(); << 135 message << "Invalid vertice coordinates for Solid: " << GetName();
81 << 136 G4Exception("G4Para::G4Para()", "GeomSolids0002",
82 // Recompute vertices << 137 FatalException, message);
83 // << 138 }
84 G4ThreeVector v[8]; << 139 fDx = ((pt[3]).x()-(pt[2]).x())*0.5;
85 G4double DyTalpha = fDy*fTalpha; << 140 fDy = ((pt[2]).y()-(pt[1]).y())*0.5;
86 G4double DzTthetaSphi = fDz*fTthetaSphi; << 141 fDz = (pt[7]).z();
87 G4double DzTthetaCphi = fDz*fTthetaCphi; << 142 fTalpha = ((pt[2]).x()+(pt[3]).x()-(pt[1]).x()-(pt[0]).x())*0.25/fDy ;
88 v[0].set(-DzTthetaCphi-DyTalpha-fDx, -DzTthe << 143 fTthetaCphi = ((pt[4]).x()+fDy*fTalpha+fDx)/fDz ;
89 v[1].set(-DzTthetaCphi-DyTalpha+fDx, -DzTthe << 144 fTthetaSphi = ((pt[4]).y()+fDy)/fDz ;
90 v[2].set(-DzTthetaCphi+DyTalpha-fDx, -DzTthe << 145 fCubicVolume = 0.;
91 v[3].set(-DzTthetaCphi+DyTalpha+fDx, -DzTthe << 146 fSurfaceArea = 0.;
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 } 147 }
120 148
121 ////////////////////////////////////////////// << 149 ///////////////////////////////////////////////////////////////////////
122 // 150 //
123 // Fake default constructor - sets only member 151 // Fake default constructor - sets only member data and allocates memory
124 // for usage restri << 152 // for usage restricted to object persistency.
125 << 153 //
126 G4Para::G4Para( __void__& a ) 154 G4Para::G4Para( __void__& a )
127 : G4CSGSolid(a), halfCarTolerance(0.5*kCarTo << 155 : G4CSGSolid(a), fDx(0.), fDy(0.), fDz(0.),
>> 156 fTalpha(0.), fTthetaCphi(0.), fTthetaSphi(0.)
128 { 157 {
129 SetAllParameters(1., 1., 1., 0., 0., 0.); <<
130 fRebuildPolyhedron = false; // default value <<
131 } 158 }
132 159
133 ////////////////////////////////////////////// 160 //////////////////////////////////////////////////////////////////////////
134 // 161 //
135 // Destructor <<
136 162
137 G4Para::~G4Para() = default; << 163 G4Para::~G4Para()
>> 164 {
>> 165 }
138 166
139 ////////////////////////////////////////////// 167 //////////////////////////////////////////////////////////////////////////
140 // 168 //
141 // Copy constructor 169 // Copy constructor
142 170
143 G4Para::G4Para(const G4Para& rhs) 171 G4Para::G4Para(const G4Para& rhs)
144 : G4CSGSolid(rhs), halfCarTolerance(rhs.half << 172 : G4CSGSolid(rhs), fDx(rhs.fDx), fDy(rhs.fDy), fDz(rhs.fDz),
145 fDx(rhs.fDx), fDy(rhs.fDy), fDz(rhs.fDz), << 173 fTalpha(rhs.fTalpha), fTthetaCphi(rhs.fTthetaCphi),
146 fTthetaCphi(rhs.fTthetaCphi),fTthetaSphi(r << 174 fTthetaSphi(rhs.fTthetaSphi)
147 { 175 {
148 for (G4int i=0; i<4; ++i) { fPlanes[i] = rhs <<
149 } 176 }
150 177
151 ////////////////////////////////////////////// 178 //////////////////////////////////////////////////////////////////////////
152 // 179 //
153 // Assignment operator 180 // Assignment operator
154 181
155 G4Para& G4Para::operator = (const G4Para& rhs) << 182 G4Para& G4Para::operator = (const G4Para& rhs)
156 { 183 {
157 // Check assignment to self 184 // Check assignment to self
158 // 185 //
159 if (this == &rhs) { return *this; } 186 if (this == &rhs) { return *this; }
160 187
161 // Copy base class data 188 // Copy base class data
162 // 189 //
163 G4CSGSolid::operator=(rhs); 190 G4CSGSolid::operator=(rhs);
164 191
165 // Copy data 192 // Copy data
166 // 193 //
167 halfCarTolerance = rhs.halfCarTolerance; << 194 fDx = rhs.fDx; fDy = rhs.fDy; fDz = rhs.fDz;
168 fDx = rhs.fDx; << 195 fTalpha = rhs.fTalpha; fTthetaCphi = rhs.fTthetaCphi;
169 fDy = rhs.fDy; <<
170 fDz = rhs.fDz; <<
171 fTalpha = rhs.fTalpha; <<
172 fTthetaCphi = rhs.fTthetaCphi; <<
173 fTthetaSphi = rhs.fTthetaSphi; 196 fTthetaSphi = rhs.fTthetaSphi;
174 for (G4int i=0; i<4; ++i) { fPlanes[i] = rh <<
175 197
176 return *this; 198 return *this;
177 } 199 }
178 200
179 ////////////////////////////////////////////// 201 //////////////////////////////////////////////////////////////////////////
180 // 202 //
181 // Set all parameters, as for constructor - se <<
182 <<
183 void G4Para::SetAllParameters(G4double pDx, G4 <<
184 G4double pAlpha, <<
185 { <<
186 // Reset data of the base class <<
187 fCubicVolume = 0; <<
188 fSurfaceArea = 0; <<
189 fRebuildPolyhedron = true; <<
190 <<
191 // Set parameters <<
192 fDx = pDx; <<
193 fDy = pDy; <<
194 fDz = pDz; <<
195 fTalpha = std::tan(pAlpha); <<
196 fTthetaCphi = std::tan(pTheta)*std::cos(pPhi <<
197 fTthetaSphi = std::tan(pTheta)*std::sin(pPhi <<
198 <<
199 CheckParameters(); <<
200 MakePlanes(); <<
201 } <<
202 <<
203 ////////////////////////////////////////////// <<
204 // <<
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 } <<
222 } <<
223 <<
224 ////////////////////////////////////////////// <<
225 // <<
226 // Set side planes <<
227 <<
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 // <<
265 // Get volume <<
266 <<
267 G4double G4Para::GetCubicVolume() <<
268 { <<
269 // It is like G4Box, since para transformati <<
270 if (fCubicVolume == 0) <<
271 { <<
272 fCubicVolume = 8*fDx*fDy*fDz; <<
273 } <<
274 return fCubicVolume; <<
275 } <<
276 <<
277 ////////////////////////////////////////////// <<
278 // <<
279 // Get surface area <<
280 <<
281 G4double G4Para::GetSurfaceArea() <<
282 { <<
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 } <<
297 <<
298 ////////////////////////////////////////////// <<
299 // <<
300 // Dispatch to parameterisation for replicatio 203 // Dispatch to parameterisation for replication mechanism dimension
301 // computation & modification << 204 // computation & modification.
302 205
303 void G4Para::ComputeDimensions( G4VPVPara 206 void G4Para::ComputeDimensions( G4VPVParameterisation* p,
304 const G4int n, 207 const G4int n,
305 const G4VPhysi 208 const G4VPhysicalVolume* pRep )
306 { 209 {
307 p->ComputeDimensions(*this,n,pRep); 210 p->ComputeDimensions(*this,n,pRep);
308 } 211 }
309 212
310 ////////////////////////////////////////////// <<
311 // <<
312 // Get bounding box <<
313 <<
314 void G4Para::BoundingLimits(G4ThreeVector& pMi <<
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 } <<
352 213
353 ////////////////////////////////////////////// << 214 //////////////////////////////////////////////////////////////
354 // 215 //
355 // Calculate extent under transform and specif 216 // Calculate extent under transform and specified limit
356 217
357 G4bool G4Para::CalculateExtent( const EAxis pA 218 G4bool G4Para::CalculateExtent( const EAxis pAxis,
358 const G4VoxelL 219 const G4VoxelLimits& pVoxelLimit,
359 const G4Affine 220 const G4AffineTransform& pTransform,
360 G4double& 221 G4double& pMin, G4double& pMax ) const
361 { 222 {
362 G4ThreeVector bmin, bmax; << 223 G4bool flag;
363 G4bool exist; <<
364 224
365 // Check bounding box (bbox) << 225 if (!pTransform.IsRotated())
366 // << 226 {
367 BoundingLimits(bmin,bmax); << 227 // Special case handling for unrotated trapezoids
368 G4BoundingEnvelope bbox(bmin,bmax); << 228 // Compute z/x/y/ mins and maxs respecting limits, with early returns
369 #ifdef G4BBOX_EXTENT << 229 // if outside limits. Then switch() on pAxis
370 return bbox.CalculateExtent(pAxis,pVoxelLimi << 230
371 #endif << 231 G4int i ;
372 if (bbox.BoundingBoxVsVoxelLimits(pAxis,pVox << 232 G4double xoffset,xMin,xMax;
373 { << 233 G4double yoffset,yMin,yMax;
374 return exist = pMin < pMax; << 234 G4double zoffset,zMin,zMax;
375 } << 235 G4double temp[8] ; // some points for intersection with zMin/zMax
>> 236
>> 237 xoffset=pTransform.NetTranslation().x();
>> 238 yoffset=pTransform.NetTranslation().y();
>> 239 zoffset=pTransform.NetTranslation().z();
>> 240
>> 241 G4ThreeVector pt[8]; // vertices after translation
>> 242 pt[0]=G4ThreeVector(xoffset-fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 243 yoffset-fDz*fTthetaSphi-fDy,zoffset-fDz);
>> 244 pt[1]=G4ThreeVector(xoffset-fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 245 yoffset-fDz*fTthetaSphi-fDy,zoffset-fDz);
>> 246 pt[2]=G4ThreeVector(xoffset-fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 247 yoffset-fDz*fTthetaSphi+fDy,zoffset-fDz);
>> 248 pt[3]=G4ThreeVector(xoffset-fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 249 yoffset-fDz*fTthetaSphi+fDy,zoffset-fDz);
>> 250 pt[4]=G4ThreeVector(xoffset+fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 251 yoffset+fDz*fTthetaSphi-fDy,zoffset+fDz);
>> 252 pt[5]=G4ThreeVector(xoffset+fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 253 yoffset+fDz*fTthetaSphi-fDy,zoffset+fDz);
>> 254 pt[6]=G4ThreeVector(xoffset+fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 255 yoffset+fDz*fTthetaSphi+fDy,zoffset+fDz);
>> 256 pt[7]=G4ThreeVector(xoffset+fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 257 yoffset+fDz*fTthetaSphi+fDy,zoffset+fDz);
>> 258 zMin=zoffset-fDz;
>> 259 zMax=zoffset+fDz;
>> 260 if ( pVoxelLimit.IsZLimited() )
>> 261 {
>> 262 if ( (zMin>pVoxelLimit.GetMaxZExtent()+kCarTolerance)
>> 263 || (zMax<pVoxelLimit.GetMinZExtent()-kCarTolerance) )
>> 264 {
>> 265 return false;
>> 266 }
>> 267 else
>> 268 {
>> 269 if (zMin<pVoxelLimit.GetMinZExtent())
>> 270 {
>> 271 zMin=pVoxelLimit.GetMinZExtent();
>> 272 }
>> 273 if (zMax>pVoxelLimit.GetMaxZExtent())
>> 274 {
>> 275 zMax=pVoxelLimit.GetMaxZExtent();
>> 276 }
>> 277 }
>> 278 }
376 279
377 // Set bounding envelope (benv) and calculat << 280 temp[0] = pt[0].y()+(pt[4].y()-pt[0].y())
378 // << 281 *(zMin-pt[0].z())/(pt[4].z()-pt[0].z()) ;
379 G4double dz = GetZHalfLength(); << 282 temp[1] = pt[0].y()+(pt[4].y()-pt[0].y())
380 G4double dx = GetXHalfLength(); << 283 *(zMax-pt[0].z())/(pt[4].z()-pt[0].z()) ;
381 G4double dy = GetYHalfLength(); << 284 temp[2] = pt[2].y()+(pt[6].y()-pt[2].y())
>> 285 *(zMin-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 286 temp[3] = pt[2].y()+(pt[6].y()-pt[2].y())
>> 287 *(zMax-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 288 yMax = yoffset - std::fabs(fDz*fTthetaSphi) - fDy - fDy ;
>> 289 yMin = -yMax ;
>> 290 for(i=0;i<4;i++)
>> 291 {
>> 292 if(temp[i] > yMax) yMax = temp[i] ;
>> 293 if(temp[i] < yMin) yMin = temp[i] ;
>> 294 }
>> 295
>> 296 if (pVoxelLimit.IsYLimited())
>> 297 {
>> 298 if ( (yMin>pVoxelLimit.GetMaxYExtent()+kCarTolerance)
>> 299 || (yMax<pVoxelLimit.GetMinYExtent()-kCarTolerance) )
>> 300 {
>> 301 return false;
>> 302 }
>> 303 else
>> 304 {
>> 305 if (yMin<pVoxelLimit.GetMinYExtent())
>> 306 {
>> 307 yMin=pVoxelLimit.GetMinYExtent();
>> 308 }
>> 309 if (yMax>pVoxelLimit.GetMaxYExtent())
>> 310 {
>> 311 yMax=pVoxelLimit.GetMaxYExtent();
>> 312 }
>> 313 }
>> 314 }
382 315
383 G4double x0 = dz*fTthetaCphi; << 316 temp[0] = pt[0].x()+(pt[4].x()-pt[0].x())
384 G4double x1 = dy*GetTanAlpha(); << 317 *(zMin-pt[0].z())/(pt[4].z()-pt[0].z()) ;
385 G4double y0 = dz*fTthetaSphi; << 318 temp[1] = pt[0].x()+(pt[4].x()-pt[0].x())
>> 319 *(zMax-pt[0].z())/(pt[4].z()-pt[0].z()) ;
>> 320 temp[2] = pt[2].x()+(pt[6].x()-pt[2].x())
>> 321 *(zMin-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 322 temp[3] = pt[2].x()+(pt[6].x()-pt[2].x())
>> 323 *(zMax-pt[2].z())/(pt[6].z()-pt[2].z()) ;
>> 324 temp[4] = pt[3].x()+(pt[7].x()-pt[3].x())
>> 325 *(zMin-pt[3].z())/(pt[7].z()-pt[3].z()) ;
>> 326 temp[5] = pt[3].x()+(pt[7].x()-pt[3].x())
>> 327 *(zMax-pt[3].z())/(pt[7].z()-pt[3].z()) ;
>> 328 temp[6] = pt[1].x()+(pt[5].x()-pt[1].x())
>> 329 *(zMin-pt[1].z())/(pt[5].z()-pt[1].z()) ;
>> 330 temp[7] = pt[1].x()+(pt[5].x()-pt[1].x())
>> 331 *(zMax-pt[1].z())/(pt[5].z()-pt[1].z()) ;
>> 332
>> 333 xMax = xoffset - std::fabs(fDz*fTthetaCphi) - fDx - fDx -fDx - fDx;
>> 334 xMin = -xMax ;
>> 335 for(i=0;i<8;i++)
>> 336 {
>> 337 if(temp[i] > xMax) xMax = temp[i] ;
>> 338 if(temp[i] < xMin) xMin = temp[i] ;
>> 339 }
>> 340 // xMax/Min = f(yMax/Min) ?
>> 341 if (pVoxelLimit.IsXLimited())
>> 342 {
>> 343 if ( (xMin>pVoxelLimit.GetMaxXExtent()+kCarTolerance)
>> 344 || (xMax<pVoxelLimit.GetMinXExtent()-kCarTolerance) )
>> 345 {
>> 346 return false;
>> 347 }
>> 348 else
>> 349 {
>> 350 if (xMin<pVoxelLimit.GetMinXExtent())
>> 351 {
>> 352 xMin=pVoxelLimit.GetMinXExtent();
>> 353 }
>> 354 if (xMax>pVoxelLimit.GetMaxXExtent())
>> 355 {
>> 356 xMax=pVoxelLimit.GetMaxXExtent();
>> 357 }
>> 358 }
>> 359 }
386 360
387 G4ThreeVectorList baseA(4), baseB(4); << 361 switch (pAxis)
388 baseA[0].set(-x0-x1-dx,-y0-dy,-dz); << 362 {
389 baseA[1].set(-x0-x1+dx,-y0-dy,-dz); << 363 case kXAxis:
390 baseA[2].set(-x0+x1+dx,-y0+dy,-dz); << 364 pMin=xMin;
391 baseA[3].set(-x0+x1-dx,-y0+dy,-dz); << 365 pMax=xMax;
>> 366 break;
>> 367 case kYAxis:
>> 368 pMin=yMin;
>> 369 pMax=yMax;
>> 370 break;
>> 371 case kZAxis:
>> 372 pMin=zMin;
>> 373 pMax=zMax;
>> 374 break;
>> 375 default:
>> 376 break;
>> 377 }
392 378
393 baseB[0].set(+x0-x1-dx, y0-dy, dz); << 379 pMin-=kCarTolerance;
394 baseB[1].set(+x0-x1+dx, y0-dy, dz); << 380 pMax+=kCarTolerance;
395 baseB[2].set(+x0+x1+dx, y0+dy, dz); << 381 flag = true;
396 baseB[3].set(+x0+x1-dx, y0+dy, dz); << 382 }
>> 383 else
>> 384 {
>> 385 // General rotated case - create and clip mesh to boundaries
>> 386
>> 387 G4bool existsAfterClip=false;
>> 388 G4ThreeVectorList *vertices;
397 389
398 std::vector<const G4ThreeVectorList *> polyg << 390 pMin=+kInfinity;
399 polygons[0] = &baseA; << 391 pMax=-kInfinity;
400 polygons[1] = &baseB; <<
401 392
402 G4BoundingEnvelope benv(bmin,bmax,polygons); << 393 // Calculate rotated vertex coordinates
403 exist = benv.CalculateExtent(pAxis,pVoxelLim << 394
404 return exist; << 395 vertices=CreateRotatedVertices(pTransform);
>> 396 ClipCrossSection(vertices,0,pVoxelLimit,pAxis,pMin,pMax);
>> 397 ClipCrossSection(vertices,4,pVoxelLimit,pAxis,pMin,pMax);
>> 398 ClipBetweenSections(vertices,0,pVoxelLimit,pAxis,pMin,pMax);
>> 399
>> 400 if (pMin!=kInfinity||pMax!=-kInfinity)
>> 401 {
>> 402 existsAfterClip=true;
>> 403
>> 404 // Add 2*tolerance to avoid precision troubles
>> 405 //
>> 406 pMin-=kCarTolerance;
>> 407 pMax+=kCarTolerance;
>> 408 }
>> 409 else
>> 410 {
>> 411 // Check for case where completely enveloping clipping volume
>> 412 // If point inside then we are confident that the solid completely
>> 413 // envelopes the clipping volume. Hence set min/max extents according
>> 414 // to clipping volume extents along the specified axis.
>> 415
>> 416 G4ThreeVector clipCentre(
>> 417 (pVoxelLimit.GetMinXExtent()+pVoxelLimit.GetMaxXExtent())*0.5,
>> 418 (pVoxelLimit.GetMinYExtent()+pVoxelLimit.GetMaxYExtent())*0.5,
>> 419 (pVoxelLimit.GetMinZExtent()+pVoxelLimit.GetMaxZExtent())*0.5);
>> 420
>> 421 if (Inside(pTransform.Inverse().TransformPoint(clipCentre))!=kOutside)
>> 422 {
>> 423 existsAfterClip=true;
>> 424 pMin=pVoxelLimit.GetMinExtent(pAxis);
>> 425 pMax=pVoxelLimit.GetMaxExtent(pAxis);
>> 426 }
>> 427 }
>> 428 delete vertices ; // 'new' in the function called
>> 429 flag = existsAfterClip ;
>> 430 }
>> 431 return flag;
405 } 432 }
406 433
407 ////////////////////////////////////////////// << 434 /////////////////////////////////////////////////////////////////////////////
408 // <<
409 // Determine where is point p, inside/on_surfa <<
410 // 435 //
>> 436 // Check in p is inside/on surface/outside solid
411 437
412 EInside G4Para::Inside( const G4ThreeVector& p 438 EInside G4Para::Inside( const G4ThreeVector& p ) const
413 { 439 {
414 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. << 440 G4double xt, yt, yt1;
415 G4double dx = std::abs(xx) + fPlanes[2].d; << 441 EInside in = kOutside;
416 442
417 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 443 yt1 = p.y() - fTthetaSphi*p.z();
418 G4double dy = std::abs(yy) + fPlanes[0].d; << 444 yt = std::fabs(yt1) ;
419 G4double dxy = std::max(dx,dy); <<
420 445
421 G4double dz = std::abs(p.z())-fDz; << 446 // xt = std::fabs( p.x() - fTthetaCphi*p.z() - fTalpha*yt );
422 G4double dist = std::max(dxy,dz); <<
423 447
424 if (dist > halfCarTolerance) return kOutside << 448 xt = std::fabs( p.x() - fTthetaCphi*p.z() - fTalpha*yt1 );
425 return (dist > -halfCarTolerance) ? kSurface << 449
>> 450 if ( std::fabs( p.z() ) <= fDz - kCarTolerance*0.5)
>> 451 {
>> 452 if (yt <= fDy - kCarTolerance*0.5)
>> 453 {
>> 454 if ( xt <= fDx - kCarTolerance*0.5 ) in = kInside;
>> 455 else if ( xt <= fDx + kCarTolerance*0.5 ) in = kSurface;
>> 456 }
>> 457 else if ( yt <= fDy + kCarTolerance*0.5)
>> 458 {
>> 459 if ( xt <= fDx + kCarTolerance*0.5 ) in = kSurface;
>> 460 }
>> 461 }
>> 462 else if ( std::fabs(p.z()) <= fDz + kCarTolerance*0.5 )
>> 463 {
>> 464 if ( yt <= fDy + kCarTolerance*0.5)
>> 465 {
>> 466 if ( xt <= fDx + kCarTolerance*0.5 ) in = kSurface;
>> 467 }
>> 468 }
>> 469 return in;
426 } 470 }
427 471
428 ////////////////////////////////////////////// << 472 ///////////////////////////////////////////////////////////////////////////
429 // 473 //
430 // Determine side where point is, and return c << 474 // Calculate side nearest to p, and return normal
>> 475 // If 2+ sides equidistant, first side's normal returned (arbitrarily)
431 476
432 G4ThreeVector G4Para::SurfaceNormal( const G4T 477 G4ThreeVector G4Para::SurfaceNormal( const G4ThreeVector& p ) const
433 { 478 {
434 G4int nsurf = 0; // number of surfaces where << 479 G4ThreeVector norm, sumnorm(0.,0.,0.);
>> 480 G4int noSurfaces = 0;
>> 481 G4double distx,disty,distz;
>> 482 G4double newpx,newpy,xshift;
>> 483 G4double calpha,salpha; // Sin/Cos(alpha) - needed to recalc G4Parameter
>> 484 G4double tntheta,cosntheta; // tan and cos of normal's theta component
>> 485 G4double ycomp;
>> 486 G4double delta = 0.5*kCarTolerance;
>> 487
>> 488 newpx = p.x()-fTthetaCphi*p.z();
>> 489 newpy = p.y()-fTthetaSphi*p.z();
>> 490
>> 491 calpha = 1/std::sqrt(1+fTalpha*fTalpha);
>> 492 if (fTalpha) {salpha = -calpha*fTalpha;} // NOTE: using MINUS std::sin(alpha)
>> 493 else {salpha = 0.;}
>> 494
>> 495 // xshift = newpx*calpha+newpy*salpha;
>> 496 xshift = newpx - newpy*fTalpha;
435 497
436 // Check Z faces << 498 // distx = std::fabs(std::fabs(xshift)-fDx*calpha);
437 // << 499 distx = std::fabs(std::fabs(xshift)-fDx);
438 G4double nz = 0; << 500 disty = std::fabs(std::fabs(newpy)-fDy);
439 G4double dz = std::abs(p.z()) - fDz; << 501 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 } <<
445 502
446 // Check Y faces << 503 tntheta = fTthetaCphi*calpha + fTthetaSphi*salpha;
447 // << 504 cosntheta = 1/std::sqrt(1+tntheta*tntheta);
448 G4double ny = 0; << 505 ycomp = 1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
449 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 506
450 if (std::abs(fPlanes[0].d + yy) <= halfCarTo << 507 G4ThreeVector nX = G4ThreeVector( calpha*cosntheta,
451 { << 508 salpha*cosntheta,
452 ny = fPlanes[0].b; << 509 -tntheta*cosntheta);
453 nz += fPlanes[0].c; << 510 G4ThreeVector nY = G4ThreeVector( 0, ycomp,-fTthetaSphi*ycomp);
454 ++nsurf; << 511 G4ThreeVector nZ = G4ThreeVector( 0, 0, 1.0);
455 } << 512
456 else if (std::abs(fPlanes[1].d - yy) <= half << 513 if (distx <= delta)
457 { 514 {
458 ny = fPlanes[1].b; << 515 noSurfaces ++;
459 nz += fPlanes[1].c; << 516 if ( xshift >= 0.) {sumnorm += nX;}
460 ++nsurf; << 517 else {sumnorm -= nX;}
461 } 518 }
462 << 519 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 { 520 {
469 nx = fPlanes[2].a; << 521 noSurfaces ++;
470 ny += fPlanes[2].b; << 522 if ( newpy >= 0.) {sumnorm += nY;}
471 nz += fPlanes[2].c; << 523 else {sumnorm -= nY;}
472 ++nsurf; <<
473 } 524 }
474 else if (std::abs(fPlanes[3].d - xx) <= half << 525 if (distz <= delta)
475 { 526 {
476 nx = fPlanes[3].a; << 527 noSurfaces ++;
477 ny += fPlanes[3].b; << 528 if ( p.z() >= 0.) {sumnorm += nZ;}
478 nz += fPlanes[3].c; << 529 else {sumnorm -= nZ;}
479 ++nsurf; <<
480 } 530 }
481 << 531 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 { 532 {
488 // Point is not on the surface <<
489 // <<
490 #ifdef G4CSGDEBUG 533 #ifdef G4CSGDEBUG
491 std::ostringstream message; <<
492 G4int oldprc = message.precision(16); <<
493 message << "Point p is not on surface (!?) <<
494 << GetName() << G4endl; <<
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 534 G4Exception("G4Para::SurfaceNormal(p)", "GeomSolids1002",
501 JustWarning, message ); << 535 JustWarning, "Point p is not on surface !?" );
502 DumpInfo(); << 536 #endif
503 #endif << 537 norm = ApproxSurfaceNormal(p);
504 return ApproxSurfaceNormal(p); <<
505 } 538 }
>> 539 else if ( noSurfaces == 1 ) {norm = sumnorm;}
>> 540 else {norm = sumnorm.unit();}
>> 541
>> 542 return norm;
506 } 543 }
507 544
508 ////////////////////////////////////////////// << 545
>> 546 ////////////////////////////////////////////////////////////////////////
509 // 547 //
510 // Algorithm for SurfaceNormal() following the 548 // Algorithm for SurfaceNormal() following the original specification
511 // for points not on the surface 549 // for points not on the surface
512 550
513 G4ThreeVector G4Para::ApproxSurfaceNormal( con 551 G4ThreeVector G4Para::ApproxSurfaceNormal( const G4ThreeVector& p ) const
514 { 552 {
515 G4double dist = -DBL_MAX; << 553 ENSide side;
516 G4int iside = 0; << 554 G4ThreeVector norm;
517 for (G4int i=0; i<4; ++i) << 555 G4double distx,disty,distz;
>> 556 G4double newpx,newpy,xshift;
>> 557 G4double calpha,salpha; // Sin/Cos(alpha) - needed to recalc G4Parameter
>> 558 G4double tntheta,cosntheta; // tan and cos of normal's theta component
>> 559 G4double ycomp;
>> 560
>> 561 newpx=p.x()-fTthetaCphi*p.z();
>> 562 newpy=p.y()-fTthetaSphi*p.z();
>> 563
>> 564 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 565 if (fTalpha)
>> 566 {
>> 567 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 568 }
>> 569 else
518 { 570 {
519 G4double d = fPlanes[i].a*p.x() + << 571 salpha=0;
520 fPlanes[i].b*p.y() + <<
521 fPlanes[i].c*p.z() + fPlanes[ <<
522 if (d > dist) { dist = d; iside = i; } <<
523 } 572 }
524 573
525 G4double distz = std::abs(p.z()) - fDz; << 574 xshift=newpx*calpha+newpy*salpha;
526 if (dist > distz) << 575
527 return { fPlanes[iside].a, fPlanes[iside]. << 576 distx=std::fabs(std::fabs(xshift)-fDx*calpha);
>> 577 disty=std::fabs(std::fabs(newpy)-fDy);
>> 578 distz=std::fabs(std::fabs(p.z())-fDz);
>> 579
>> 580 if (distx<disty)
>> 581 {
>> 582 if (distx<distz) {side=kNX;}
>> 583 else {side=kNZ;}
>> 584 }
528 else 585 else
529 return { 0, 0, (G4double)((p.z() < 0) ? -1 << 586 {
>> 587 if (disty<distz) {side=kNY;}
>> 588 else {side=kNZ;}
>> 589 }
>> 590
>> 591 switch (side)
>> 592 {
>> 593 case kNX:
>> 594 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 595 if (xshift<0)
>> 596 {
>> 597 cosntheta=-1/std::sqrt(1+tntheta*tntheta);
>> 598 }
>> 599 else
>> 600 {
>> 601 cosntheta=1/std::sqrt(1+tntheta*tntheta);
>> 602 }
>> 603 norm=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
>> 604 break;
>> 605 case kNY:
>> 606 if (newpy<0)
>> 607 {
>> 608 ycomp=-1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 609 }
>> 610 else
>> 611 {
>> 612 ycomp=1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 613 }
>> 614 norm=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 615 break;
>> 616 case kNZ: // Closest to Z
>> 617 if (p.z()>=0)
>> 618 {
>> 619 norm=G4ThreeVector(0,0,1);
>> 620 }
>> 621 else
>> 622 {
>> 623 norm=G4ThreeVector(0,0,-1);
>> 624 }
>> 625 break;
>> 626 }
>> 627 return norm;
530 } 628 }
531 629
532 ////////////////////////////////////////////// << 630 //////////////////////////////////////////////////////////////////////////////
533 // 631 //
534 // Calculate distance to shape from outside 632 // Calculate distance to shape from outside
535 // - return kInfinity if no intersection << 633 // - return kInfinity if no intersection
536 << 634 //
537 G4double G4Para::DistanceToIn(const G4ThreeVec << 635 // ALGORITHM:
538 const G4ThreeVec << 636 // For each component, calculate pair of minimum and maximum intersection
539 { << 637 // values for which the particle is in the extent of the shape
540 // Z intersections << 638 // - The smallest (MAX minimum) allowed distance of the pairs is intersect
>> 639 // - Z plane intersectin uses tolerance
>> 640 // - XZ YZ planes use logic & *SLIGHTLY INCORRECT* tolerance
>> 641 // (this saves at least 1 sqrt, 1 multiply and 1 divide... in applicable
>> 642 // cases)
>> 643 // - Note: XZ and YZ planes each divide space into four regions,
>> 644 // characterised by ss1 ss2
>> 645
>> 646 G4double G4Para::DistanceToIn( const G4ThreeVector& p,
>> 647 const G4ThreeVector& v ) const
>> 648 {
>> 649 G4double snxt; // snxt = default return value
>> 650 G4double smin,smax;
>> 651 G4double tmin,tmax;
>> 652 G4double yt,vy,xt,vx;
>> 653 G4double max;
541 // 654 //
542 if ((std::abs(p.z()) - fDz) >= -halfCarToler << 655 // 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 // 656 //
551 G4double tmin0 = tzmin, tmax0 = tzmax; << 657 if (v.z()>0)
552 G4double cos0 = fPlanes[0].b*v.y() + fPlanes << 658 {
553 G4double disy = fPlanes[0].b*p.y() + fPlanes << 659 max=fDz-p.z();
554 G4double dis0 = fPlanes[0].d + disy; << 660 if (max>kCarTolerance*0.5)
555 if (dis0 >= -halfCarTolerance) << 661 {
>> 662 smax=max/v.z();
>> 663 smin=(-fDz-p.z())/v.z();
>> 664 }
>> 665 else
>> 666 {
>> 667 return snxt=kInfinity;
>> 668 }
>> 669 }
>> 670 else if (v.z()<0)
556 { 671 {
557 if (cos0 >= 0) return kInfinity; << 672 max=-fDz-p.z();
558 G4double tmp = -dis0/cos0; << 673 if (max<-kCarTolerance*0.5)
559 if (tmin0 < tmp) tmin0 = tmp; << 674 {
>> 675 smax=max/v.z();
>> 676 smin=(fDz-p.z())/v.z();
>> 677 }
>> 678 else
>> 679 {
>> 680 return snxt=kInfinity;
>> 681 }
560 } 682 }
561 else if (cos0 > 0) << 683 else
562 { 684 {
563 G4double tmp = -dis0/cos0; << 685 if (std::fabs(p.z())<=fDz) // Inside
564 if (tmax0 > tmp) tmax0 = tmp; << 686 {
>> 687 smin=0;
>> 688 smax=kInfinity;
>> 689 }
>> 690 else
>> 691 {
>> 692 return snxt=kInfinity;
>> 693 }
565 } 694 }
>> 695
>> 696 //
>> 697 // Y G4Parallel planes intersection
>> 698 //
>> 699
>> 700 yt=p.y()-fTthetaSphi*p.z();
>> 701 vy=v.y()-fTthetaSphi*v.z();
566 702
567 G4double tmin1 = tmin0, tmax1 = tmax0; << 703 if (vy>0)
568 G4double cos1 = -cos0; <<
569 G4double dis1 = fPlanes[1].d - disy; <<
570 if (dis1 >= -halfCarTolerance) <<
571 { 704 {
572 if (cos1 >= 0) return kInfinity; << 705 max=fDy-yt;
573 G4double tmp = -dis1/cos1; << 706 if (max>kCarTolerance*0.5)
574 if (tmin1 < tmp) tmin1 = tmp; << 707 {
>> 708 tmax=max/vy;
>> 709 tmin=(-fDy-yt)/vy;
>> 710 }
>> 711 else
>> 712 {
>> 713 return snxt=kInfinity;
>> 714 }
575 } 715 }
576 else if (cos1 > 0) << 716 else if (vy<0)
577 { 717 {
578 G4double tmp = -dis1/cos1; << 718 max=-fDy-yt;
579 if (tmax1 > tmp) tmax1 = tmp; << 719 if (max<-kCarTolerance*0.5)
>> 720 {
>> 721 tmax=max/vy;
>> 722 tmin=(fDy-yt)/vy;
>> 723 }
>> 724 else
>> 725 {
>> 726 return snxt=kInfinity;
>> 727 }
>> 728 }
>> 729 else
>> 730 {
>> 731 if (std::fabs(yt)<=fDy)
>> 732 {
>> 733 tmin=0;
>> 734 tmax=kInfinity;
>> 735 }
>> 736 else
>> 737 {
>> 738 return snxt=kInfinity;
>> 739 }
580 } 740 }
581 741
582 // X intersections << 742 // Re-Calc valid intersection range
583 // 743 //
584 G4double tmin2 = tmin1, tmax2 = tmax1; << 744 if (tmin>smin) smin=tmin;
585 G4double cos2 = fPlanes[2].a*v.x() + fPlanes << 745 if (tmax<smax) smax=tmax;
586 G4double disx = fPlanes[2].a*p.x() + fPlanes << 746 if (smax<=smin)
587 G4double dis2 = fPlanes[2].d + disx; <<
588 if (dis2 >= -halfCarTolerance) <<
589 { 747 {
590 if (cos2 >= 0) return kInfinity; << 748 return snxt=kInfinity;
591 G4double tmp = -dis2/cos2; <<
592 if (tmin2 < tmp) tmin2 = tmp; <<
593 } 749 }
594 else if (cos2 > 0) << 750 else
595 { 751 {
596 G4double tmp = -dis2/cos2; << 752 //
597 if (tmax2 > tmp) tmax2 = tmp; << 753 // X G4Parallel planes intersection
>> 754 //
>> 755 xt=p.x()-fTthetaCphi*p.z()-fTalpha*yt;
>> 756 vx=v.x()-fTthetaCphi*v.z()-fTalpha*vy;
>> 757 if (vx>0)
>> 758 {
>> 759 max=fDx-xt;
>> 760 if (max>kCarTolerance*0.5)
>> 761 {
>> 762 tmax=max/vx;
>> 763 tmin=(-fDx-xt)/vx;
>> 764 }
>> 765 else
>> 766 {
>> 767 return snxt=kInfinity;
>> 768 }
>> 769 }
>> 770 else if (vx<0)
>> 771 {
>> 772 max=-fDx-xt;
>> 773 if (max<-kCarTolerance*0.5)
>> 774 {
>> 775 tmax=max/vx;
>> 776 tmin=(fDx-xt)/vx;
>> 777 }
>> 778 else
>> 779 {
>> 780 return snxt=kInfinity;
>> 781 }
>> 782 }
>> 783 else
>> 784 {
>> 785 if (std::fabs(xt)<=fDx)
>> 786 {
>> 787 tmin=0;
>> 788 tmax=kInfinity;
>> 789 }
>> 790 else
>> 791 {
>> 792 return snxt=kInfinity;
>> 793 }
>> 794 }
>> 795 if (tmin>smin) smin=tmin;
>> 796 if (tmax<smax) smax=tmax;
598 } 797 }
599 798
600 G4double tmin3 = tmin2, tmax3 = tmax2; << 799 if (smax>0&&smin<smax)
601 G4double cos3 = -cos2; <<
602 G4double dis3 = fPlanes[3].d - disx; <<
603 if (dis3 >= -halfCarTolerance) <<
604 { 800 {
605 if (cos3 >= 0) return kInfinity; << 801 if (smin>0)
606 G4double tmp = -dis3/cos3; << 802 {
607 if (tmin3 < tmp) tmin3 = tmp; << 803 snxt=smin;
>> 804 }
>> 805 else
>> 806 {
>> 807 snxt=0;
>> 808 }
608 } 809 }
609 else if (cos3 > 0) << 810 else
610 { 811 {
611 G4double tmp = -dis3/cos3; << 812 snxt=kInfinity;
612 if (tmax3 > tmp) tmax3 = tmp; <<
613 } 813 }
614 << 814 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 } 815 }
621 816
622 ////////////////////////////////////////////// << 817 ////////////////////////////////////////////////////////////////////////////
623 // 818 //
624 // Calculate exact shortest distance to any bo 819 // Calculate exact shortest distance to any boundary from outside
625 // - returns 0 is point inside << 820 // - Returns 0 is point inside
626 821
627 G4double G4Para::DistanceToIn( const G4ThreeVe 822 G4double G4Para::DistanceToIn( const G4ThreeVector& p ) const
628 { 823 {
629 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. << 824 G4double safe=0.0;
630 G4double dx = std::abs(xx) + fPlanes[2].d; << 825 G4double distz1,distz2,disty1,disty2,distx1,distx2;
>> 826 G4double trany,cosy,tranx,cosx;
631 827
632 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 828 // Z planes
633 G4double dy = std::abs(yy) + fPlanes[0].d; << 829 //
634 G4double dxy = std::max(dx,dy); << 830 distz1=p.z()-fDz;
>> 831 distz2=-fDz-p.z();
>> 832 if (distz1>distz2)
>> 833 {
>> 834 safe=distz1;
>> 835 }
>> 836 else
>> 837 {
>> 838 safe=distz2;
>> 839 }
635 840
636 G4double dz = std::abs(p.z())-fDz; << 841 trany=p.y()-fTthetaSphi*p.z(); // Transformed y into `box' system
637 G4double dist = std::max(dxy,dz); << 842
>> 843 // Transformed x into `box' system
>> 844 //
>> 845 cosy=1.0/std::sqrt(1.0+fTthetaSphi*fTthetaSphi);
>> 846 disty1=(trany-fDy)*cosy;
>> 847 disty2=(-fDy-trany)*cosy;
>> 848
>> 849 if (disty1>safe) safe=disty1;
>> 850 if (disty2>safe) safe=disty2;
638 851
639 return (dist > 0) ? dist : 0.; << 852 tranx=p.x()-fTthetaCphi*p.z()-fTalpha*trany;
>> 853 cosx=1.0/std::sqrt(1.0+fTalpha*fTalpha+fTthetaCphi*fTthetaCphi);
>> 854 distx1=(tranx-fDx)*cosx;
>> 855 distx2=(-fDx-tranx)*cosx;
>> 856
>> 857 if (distx1>safe) safe=distx1;
>> 858 if (distx2>safe) safe=distx2;
>> 859
>> 860 if (safe<0) safe=0;
>> 861 return safe;
640 } 862 }
641 863
642 ////////////////////////////////////////////// 864 //////////////////////////////////////////////////////////////////////////
643 // 865 //
644 // Calculate distance to surface of shape from << 866 // Calculate distance to surface of shape from inside
645 // find normal at exit point << 867 // Calculate distance to x/y/z planes - smallest is exiting distance
646 // - when leaving the surface, return 0 <<
647 868
648 G4double G4Para::DistanceToOut(const G4ThreeVe 869 G4double G4Para::DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v,
649 const G4bool ca 870 const G4bool calcNorm,
650 G4bool* v << 871 G4bool *validNorm, G4ThreeVector *n) const
651 { 872 {
652 // Z intersections << 873 ESide side = kUndef;
>> 874 G4double snxt; // snxt = return value
>> 875 G4double max,tmax;
>> 876 G4double yt,vy,xt,vx;
>> 877
>> 878 G4double ycomp,calpha,salpha,tntheta,cosntheta;
>> 879
>> 880 //
>> 881 // Z Intersections
653 // 882 //
654 if ((std::abs(p.z()) - fDz) >= -halfCarToler << 883
>> 884 if (v.z()>0)
655 { 885 {
656 if (calcNorm) << 886 max=fDz-p.z();
>> 887 if (max>kCarTolerance*0.5)
657 { 888 {
658 *validNorm = true; << 889 snxt=max/v.z();
659 n->set(0, 0, (p.z() < 0) ? -1 : 1); << 890 side=kPZ;
>> 891 }
>> 892 else
>> 893 {
>> 894 if (calcNorm)
>> 895 {
>> 896 *validNorm=true;
>> 897 *n=G4ThreeVector(0,0,1);
>> 898 }
>> 899 return snxt=0;
660 } 900 }
661 return 0.; <<
662 } 901 }
663 G4double vz = v.z(); << 902 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 { 903 {
672 G4double dis0 = fPlanes[0].b*p.y() + fPlan << 904 max=-fDz-p.z();
673 if (dis0 >= -halfCarTolerance) << 905 if (max<-kCarTolerance*0.5)
>> 906 {
>> 907 snxt=max/v.z();
>> 908 side=kMZ;
>> 909 }
>> 910 else
674 { 911 {
675 if (calcNorm) 912 if (calcNorm)
676 { 913 {
677 *validNorm = true; << 914 *validNorm=true;
678 n->set(0, fPlanes[0].b, fPlanes[0].c); << 915 *n=G4ThreeVector(0,0,-1);
679 } 916 }
680 return 0.; << 917 return snxt=0;
681 } 918 }
682 G4double tmp = -dis0/cos0; <<
683 if (tmax > tmp) { tmax = tmp; iside = 0; } <<
684 } 919 }
>> 920 else
>> 921 {
>> 922 snxt=kInfinity;
>> 923 }
>> 924
>> 925 //
>> 926 // Y plane intersection
>> 927 //
>> 928
>> 929 yt=p.y()-fTthetaSphi*p.z();
>> 930 vy=v.y()-fTthetaSphi*v.z();
685 931
686 G4double cos1 = -cos0; << 932 if (vy>0)
687 if (cos1 > 0) <<
688 { 933 {
689 G4double dis1 = fPlanes[1].b*p.y() + fPlan << 934 max=fDy-yt;
690 if (dis1 >= -halfCarTolerance) << 935 if (max>kCarTolerance*0.5)
>> 936 {
>> 937 tmax=max/vy;
>> 938 if (tmax<snxt)
>> 939 {
>> 940 snxt=tmax;
>> 941 side=kPY;
>> 942 }
>> 943 }
>> 944 else
691 { 945 {
692 if (calcNorm) 946 if (calcNorm)
>> 947 {
>> 948 *validNorm=true; // Leaving via plus Y
>> 949 ycomp=1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 950 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 951 }
>> 952 return snxt=0;
>> 953 }
>> 954 }
>> 955 else if (vy<0)
>> 956 {
>> 957 max=-fDy-yt;
>> 958 if (max<-kCarTolerance*0.5)
>> 959 {
>> 960 tmax=max/vy;
>> 961 if (tmax<snxt)
693 { 962 {
694 *validNorm = true; << 963 snxt=tmax;
695 n->set(0, fPlanes[1].b, fPlanes[1].c); << 964 side=kMY;
696 } 965 }
697 return 0.; <<
698 } 966 }
699 G4double tmp = -dis1/cos1; << 967 else
700 if (tmax > tmp) { tmax = tmp; iside = 1; } << 968 {
>> 969 if (calcNorm)
>> 970 {
>> 971 *validNorm=true; // Leaving via minus Y
>> 972 ycomp=-1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 973 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 974 }
>> 975 return snxt=0;
>> 976 }
701 } 977 }
702 978
703 // X intersections <<
704 // 979 //
705 G4double cos2 = fPlanes[2].a*v.x() + fPlanes << 980 // X plane intersection
706 if (cos2 > 0) << 981 //
>> 982
>> 983 xt=p.x()-fTthetaCphi*p.z()-fTalpha*yt;
>> 984 vx=v.x()-fTthetaCphi*v.z()-fTalpha*vy;
>> 985 if (vx>0)
707 { 986 {
708 G4double dis2 = fPlanes[2].a*p.x()+fPlanes << 987 max=fDx-xt;
709 if (dis2 >= -halfCarTolerance) << 988 if (max>kCarTolerance*0.5)
>> 989 {
>> 990 tmax=max/vx;
>> 991 if (tmax<snxt)
>> 992 {
>> 993 snxt=tmax;
>> 994 side=kPX;
>> 995 }
>> 996 }
>> 997 else
710 { 998 {
711 if (calcNorm) 999 if (calcNorm)
712 { 1000 {
713 *validNorm = true; << 1001 *validNorm=true; // Leaving via plus X
714 n->set(fPlanes[2].a, fPlanes[2].b, fP << 1002 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1003 if (fTalpha)
>> 1004 {
>> 1005 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1006 }
>> 1007 else
>> 1008 {
>> 1009 salpha=0;
>> 1010 }
>> 1011 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1012 cosntheta=1/std::sqrt(1+tntheta*tntheta);
>> 1013 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
715 } 1014 }
716 return 0.; << 1015 return snxt=0;
717 } 1016 }
718 G4double tmp = -dis2/cos2; <<
719 if (tmax > tmp) { tmax = tmp; iside = 2; } <<
720 } 1017 }
721 << 1018 else if (vx<0)
722 G4double cos3 = -cos2; <<
723 if (cos3 > 0) <<
724 { 1019 {
725 G4double dis3 = fPlanes[3].a*p.x()+fPlanes << 1020 max=-fDx-xt;
726 if (dis3 >= -halfCarTolerance) << 1021 if (max<-kCarTolerance*0.5)
>> 1022 {
>> 1023 tmax=max/vx;
>> 1024 if (tmax<snxt)
>> 1025 {
>> 1026 snxt=tmax;
>> 1027 side=kMX;
>> 1028 }
>> 1029 }
>> 1030 else
727 { 1031 {
728 if (calcNorm) 1032 if (calcNorm)
729 { 1033 {
730 *validNorm = true; << 1034 *validNorm=true; // Leaving via minus X
731 n->set(fPlanes[3].a, fPlanes[3].b, fP << 1035 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1036 if (fTalpha)
>> 1037 {
>> 1038 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1039 }
>> 1040 else
>> 1041 {
>> 1042 salpha=0;
>> 1043 }
>> 1044 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1045 cosntheta=-1/std::sqrt(1+tntheta*tntheta);
>> 1046 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
732 } 1047 }
733 return 0.; << 1048 return snxt=0;
734 } 1049 }
735 G4double tmp = -dis3/cos3; <<
736 if (tmax > tmp) { tmax = tmp; iside = 3; } <<
737 } 1050 }
738 1051
739 // Set normal, if required, and return dista << 1052 if (calcNorm)
740 // <<
741 if (calcNorm) <<
742 { 1053 {
743 *validNorm = true; << 1054 *validNorm=true;
744 if (iside < 0) << 1055 switch (side)
745 n->set(0, 0, iside + 3); // (-4+3)=-1, ( << 1056 {
746 else << 1057 case kMZ:
747 n->set(fPlanes[iside].a, fPlanes[iside]. << 1058 *n=G4ThreeVector(0,0,-1);
>> 1059 break;
>> 1060 case kPZ:
>> 1061 *n=G4ThreeVector(0,0,1);
>> 1062 break;
>> 1063 case kMY:
>> 1064 ycomp=-1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 1065 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 1066 break;
>> 1067 case kPY:
>> 1068 ycomp=1/std::sqrt(1+fTthetaSphi*fTthetaSphi);
>> 1069 *n=G4ThreeVector(0,ycomp,-fTthetaSphi*ycomp);
>> 1070 break;
>> 1071 case kMX:
>> 1072 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1073 if (fTalpha)
>> 1074 {
>> 1075 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1076 }
>> 1077 else
>> 1078 {
>> 1079 salpha=0;
>> 1080 }
>> 1081 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1082 cosntheta=-1/std::sqrt(1+tntheta*tntheta);
>> 1083 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
>> 1084 break;
>> 1085 case kPX:
>> 1086 calpha=1/std::sqrt(1+fTalpha*fTalpha);
>> 1087 if (fTalpha)
>> 1088 {
>> 1089 salpha=-calpha/fTalpha; // NOTE: actually use MINUS std::sin(alpha)
>> 1090 }
>> 1091 else
>> 1092 {
>> 1093 salpha=0;
>> 1094 }
>> 1095 tntheta=fTthetaCphi*calpha+fTthetaSphi*salpha;
>> 1096 cosntheta=1/std::sqrt(1+tntheta*tntheta);
>> 1097 *n=G4ThreeVector(calpha*cosntheta,salpha*cosntheta,-tntheta*cosntheta);
>> 1098 break;
>> 1099 default:
>> 1100 DumpInfo();
>> 1101 G4Exception("G4Para::DistanceToOut(p,v,..)",
>> 1102 "GeomSolids1002",JustWarning,
>> 1103 "Undefined side for valid surface normal to solid.");
>> 1104 break;
>> 1105 }
748 } 1106 }
749 return tmax; << 1107 return snxt;
750 } 1108 }
751 1109
752 ////////////////////////////////////////////// << 1110 /////////////////////////////////////////////////////////////////////////////
753 // 1111 //
754 // Calculate exact shortest distance to any bo 1112 // Calculate exact shortest distance to any boundary from inside
755 // - returns 0 is point outside << 1113 // - Returns 0 is point outside
756 1114
757 G4double G4Para::DistanceToOut( const G4ThreeV 1115 G4double G4Para::DistanceToOut( const G4ThreeVector& p ) const
758 { 1116 {
>> 1117 G4double safe=0.0;
>> 1118 G4double distz1,distz2,disty1,disty2,distx1,distx2;
>> 1119 G4double trany,cosy,tranx,cosx;
>> 1120
759 #ifdef G4CSGDEBUG 1121 #ifdef G4CSGDEBUG
760 if( Inside(p) == kOutside ) 1122 if( Inside(p) == kOutside )
761 { 1123 {
762 std::ostringstream message; << 1124 G4int oldprc = G4cout.precision(16) ;
763 G4int oldprc = message.precision(16); << 1125 G4cout << G4endl ;
764 message << "Point p is outside (!?) of sol << 1126 DumpInfo();
765 message << "Position:\n"; << 1127 G4cout << "Position:" << G4endl << G4endl ;
766 message << " p.x() = " << p.x()/mm << " << 1128 G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl ;
767 message << " p.y() = " << p.y()/mm << " << 1129 G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl ;
768 message << " p.z() = " << p.z()/mm << " << 1130 G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl ;
769 G4cout.precision(oldprc) ; << 1131 G4cout.precision(oldprc) ;
770 G4Exception("G4Para::DistanceToOut(p)", "G << 1132 G4Exception("G4Para::DistanceToOut(p)", "GeomSolids1002",
771 JustWarning, message ); << 1133 JustWarning, "Point p is outside !?" );
772 DumpInfo(); << 1134 }
773 } <<
774 #endif 1135 #endif
775 G4double xx = fPlanes[2].a*p.x()+fPlanes[2]. <<
776 G4double dx = std::abs(xx) + fPlanes[2].d; <<
777 1136
778 G4double yy = fPlanes[0].b*p.y()+fPlanes[0]. << 1137 // Z planes
779 G4double dy = std::abs(yy) + fPlanes[0].d; << 1138 //
780 G4double dxy = std::max(dx,dy); << 1139 distz1=fDz-p.z();
>> 1140 distz2=fDz+p.z();
>> 1141 if (distz1<distz2)
>> 1142 {
>> 1143 safe=distz1;
>> 1144 }
>> 1145 else
>> 1146 {
>> 1147 safe=distz2;
>> 1148 }
781 1149
782 G4double dz = std::abs(p.z())-fDz; << 1150 trany=p.y()-fTthetaSphi*p.z(); // Transformed y into `box' system
783 G4double dist = std::max(dxy,dz); <<
784 1151
785 return (dist < 0) ? -dist : 0.; << 1152 // Transformed x into `box' system
>> 1153 //
>> 1154 cosy=1.0/std::sqrt(1.0+fTthetaSphi*fTthetaSphi);
>> 1155 disty1=(fDy-trany)*cosy;
>> 1156 disty2=(fDy+trany)*cosy;
>> 1157
>> 1158 if (disty1<safe) safe=disty1;
>> 1159 if (disty2<safe) safe=disty2;
>> 1160
>> 1161 tranx=p.x()-fTthetaCphi*p.z()-fTalpha*trany;
>> 1162 cosx=1.0/std::sqrt(1.0+fTalpha*fTalpha+fTthetaCphi*fTthetaCphi);
>> 1163 distx1=(fDx-tranx)*cosx;
>> 1164 distx2=(fDx+tranx)*cosx;
>> 1165
>> 1166 if (distx1<safe) safe=distx1;
>> 1167 if (distx2<safe) safe=distx2;
>> 1168
>> 1169 if (safe<0) safe=0;
>> 1170 return safe;
786 } 1171 }
787 1172
788 ////////////////////////////////////////////// << 1173 ////////////////////////////////////////////////////////////////////////////////
789 // 1174 //
790 // GetEntityType << 1175 // Create a List containing the transformed vertices
791 << 1176 // Ordering [0-3] -fDz cross section
792 G4GeometryType G4Para::GetEntityType() const << 1177 // [4-7] +fDz cross section such that [0] is below [4],
793 { << 1178 // [1] below [5] etc.
794 return {"G4Para"}; << 1179 // Note:
>> 1180 // Caller has deletion resposibility
>> 1181
>> 1182 G4ThreeVectorList*
>> 1183 G4Para::CreateRotatedVertices( const G4AffineTransform& pTransform ) const
>> 1184 {
>> 1185 G4ThreeVectorList *vertices;
>> 1186 vertices=new G4ThreeVectorList();
>> 1187 if (vertices)
>> 1188 {
>> 1189 vertices->reserve(8);
>> 1190 G4ThreeVector vertex0(-fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1191 -fDz*fTthetaSphi-fDy, -fDz);
>> 1192 G4ThreeVector vertex1(-fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1193 -fDz*fTthetaSphi-fDy, -fDz);
>> 1194 G4ThreeVector vertex2(-fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1195 -fDz*fTthetaSphi+fDy, -fDz);
>> 1196 G4ThreeVector vertex3(-fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1197 -fDz*fTthetaSphi+fDy, -fDz);
>> 1198 G4ThreeVector vertex4(+fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1199 +fDz*fTthetaSphi-fDy, +fDz);
>> 1200 G4ThreeVector vertex5(+fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1201 +fDz*fTthetaSphi-fDy, +fDz);
>> 1202 G4ThreeVector vertex6(+fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1203 +fDz*fTthetaSphi+fDy, +fDz);
>> 1204 G4ThreeVector vertex7(+fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1205 +fDz*fTthetaSphi+fDy, +fDz);
>> 1206
>> 1207 vertices->push_back(pTransform.TransformPoint(vertex0));
>> 1208 vertices->push_back(pTransform.TransformPoint(vertex1));
>> 1209 vertices->push_back(pTransform.TransformPoint(vertex2));
>> 1210 vertices->push_back(pTransform.TransformPoint(vertex3));
>> 1211 vertices->push_back(pTransform.TransformPoint(vertex4));
>> 1212 vertices->push_back(pTransform.TransformPoint(vertex5));
>> 1213 vertices->push_back(pTransform.TransformPoint(vertex6));
>> 1214 vertices->push_back(pTransform.TransformPoint(vertex7));
>> 1215 }
>> 1216 else
>> 1217 {
>> 1218 DumpInfo();
>> 1219 G4Exception("G4Para::CreateRotatedVertices()",
>> 1220 "GeomSolids0003", FatalException,
>> 1221 "Error in allocation of vertices. Out of memory !");
>> 1222 }
>> 1223 return vertices;
795 } 1224 }
796 1225
797 ////////////////////////////////////////////// 1226 //////////////////////////////////////////////////////////////////////////
798 // 1227 //
799 // IsFaceted << 1228 // GetEntityType
800 1229
801 G4bool G4Para::IsFaceted() const << 1230 G4GeometryType G4Para::GetEntityType() const
802 { 1231 {
803 return true; << 1232 return G4String("G4Para");
804 } 1233 }
805 1234
806 ////////////////////////////////////////////// 1235 //////////////////////////////////////////////////////////////////////////
807 // 1236 //
808 // Make a clone of the object 1237 // Make a clone of the object
809 // 1238 //
810 G4VSolid* G4Para::Clone() const 1239 G4VSolid* G4Para::Clone() const
811 { 1240 {
812 return new G4Para(*this); 1241 return new G4Para(*this);
813 } 1242 }
814 1243
815 ////////////////////////////////////////////// 1244 //////////////////////////////////////////////////////////////////////////
816 // 1245 //
817 // Stream object contents to an output stream 1246 // Stream object contents to an output stream
818 1247
819 std::ostream& G4Para::StreamInfo( std::ostream 1248 std::ostream& G4Para::StreamInfo( std::ostream& os ) const
820 { 1249 {
821 G4double alpha = std::atan(fTalpha); << 1250 G4int oldprc = os.precision(16);
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 << "------------------------------------- 1251 os << "-----------------------------------------------------------\n"
828 << " *** Dump for solid - " << GetName 1252 << " *** Dump for solid - " << GetName() << " ***\n"
829 << " ================================= 1253 << " ===================================================\n"
830 << " Solid type: G4Para\n" 1254 << " Solid type: G4Para\n"
831 << " Parameters:\n" << 1255 << " Parameters: \n"
832 << " half length X: " << fDx/mm << " m << 1256 << " half length X: " << fDx/mm << " mm \n"
833 << " half length Y: " << fDy/mm << " m << 1257 << " half length Y: " << fDy/mm << " mm \n"
834 << " half length Z: " << fDz/mm << " m << 1258 << " half length Z: " << fDz/mm << " mm \n"
835 << " alpha: " << alpha/degree << "degr << 1259 << " std::tan(alpha) : " << fTalpha/degree << " degrees \n"
836 << " theta: " << theta/degree << "degr << 1260 << " std::tan(theta)*std::cos(phi): " << fTthetaCphi/degree
837 << " phi: " << phi/degree << "degrees\ << 1261 << " degrees \n"
>> 1262 << " std::tan(theta)*std::sin(phi): " << fTthetaSphi/degree
>> 1263 << " degrees \n"
838 << "------------------------------------- 1264 << "-----------------------------------------------------------\n";
839 os.precision(oldprc); 1265 os.precision(oldprc);
840 1266
841 return os; 1267 return os;
842 } 1268 }
843 1269
844 ////////////////////////////////////////////// << 1270 //////////////////////////////////////////////////////////////////////////////
>> 1271 //
>> 1272 // GetPointOnPlane
>> 1273 // Auxiliary method for Get Point on Surface
845 // 1274 //
846 // Return a point randomly and uniformly selec <<
847 1275
848 G4ThreeVector G4Para::GetPointOnSurface() cons << 1276 G4ThreeVector G4Para::GetPointOnPlane(G4ThreeVector p0, G4ThreeVector p1,
>> 1277 G4ThreeVector p2, G4ThreeVector p3,
>> 1278 G4double& area) const
849 { 1279 {
850 G4double DyTalpha = fDy*fTalpha; << 1280 G4double lambda1, lambda2, chose, aOne, aTwo;
851 G4double DzTthetaSphi = fDz*fTthetaSphi; << 1281 G4ThreeVector t, u, v, w, Area, normal;
852 G4double DzTthetaCphi = fDz*fTthetaCphi; << 1282
853 << 1283 t = p1 - p0;
854 // Set vertices << 1284 u = p2 - p1;
855 // << 1285 v = p3 - p2;
856 G4ThreeVector pt[8]; << 1286 w = p0 - p3;
857 pt[0].set(-DzTthetaCphi-DyTalpha-fDx, -DzTth << 1287
858 pt[1].set(-DzTthetaCphi-DyTalpha+fDx, -DzTth << 1288 Area = G4ThreeVector(w.y()*v.z() - w.z()*v.y(),
859 pt[2].set(-DzTthetaCphi+DyTalpha-fDx, -DzTth << 1289 w.z()*v.x() - w.x()*v.z(),
860 pt[3].set(-DzTthetaCphi+DyTalpha+fDx, -DzTth << 1290 w.x()*v.y() - w.y()*v.x());
861 pt[4].set( DzTthetaCphi-DyTalpha-fDx, DzTth << 1291
862 pt[5].set( DzTthetaCphi-DyTalpha+fDx, DzTth << 1292 aOne = 0.5*Area.mag();
863 pt[6].set( DzTthetaCphi+DyTalpha-fDx, DzTth << 1293
864 pt[7].set( DzTthetaCphi+DyTalpha+fDx, DzTth << 1294 Area = G4ThreeVector(t.y()*u.z() - t.z()*u.y(),
865 << 1295 t.z()*u.x() - t.x()*u.z(),
866 // Set areas (-Z, -Y, +Y, -X, +X, +Z) << 1296 t.x()*u.y() - t.y()*u.x());
867 // << 1297
868 G4ThreeVector vx(fDx, 0, 0); << 1298 aTwo = 0.5*Area.mag();
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 1299
876 G4double sface[6] = { sxy, syz, syz, sxz, sx << 1300 area = aOne + aTwo;
877 for (G4int i=1; i<6; ++i) { sface[i] += sfac << 1301
>> 1302 chose = RandFlat::shoot(0.,aOne+aTwo);
878 1303
879 // Select face << 1304 if( (chose>=0.) && (chose < aOne) )
880 // << 1305 {
881 G4double select = sface[5]*G4UniformRand(); << 1306 lambda1 = RandFlat::shoot(0.,1.);
882 G4int k = 5; << 1307 lambda2 = RandFlat::shoot(0.,lambda1);
883 if (select <= sface[4]) k = 4; << 1308 return (p2+lambda1*v+lambda2*w);
884 if (select <= sface[3]) k = 3; << 1309 }
885 if (select <= sface[2]) k = 2; << 1310
886 if (select <= sface[1]) k = 1; << 1311 // else
887 if (select <= sface[0]) k = 0; << 1312
888 << 1313 lambda1 = RandFlat::shoot(0.,1.);
889 // Generate point << 1314 lambda2 = RandFlat::shoot(0.,lambda1);
890 // << 1315 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 } 1316 }
896 1317
897 ////////////////////////////////////////////// << 1318 /////////////////////////////////////////////////////////////////////////
>> 1319 //
>> 1320 // GetPointOnSurface
>> 1321 //
>> 1322 // Return a point (G4ThreeVector) randomly and uniformly
>> 1323 // selected on the solid surface
>> 1324
>> 1325 G4ThreeVector G4Para::GetPointOnSurface() const
>> 1326 {
>> 1327 G4ThreeVector One, Two, Three, Four, Five, Six;
>> 1328 G4ThreeVector pt[8] ;
>> 1329 G4double chose, aOne, aTwo, aThree, aFour, aFive, aSix;
>> 1330
>> 1331 pt[0] = G4ThreeVector(-fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1332 -fDz*fTthetaSphi-fDy, -fDz);
>> 1333 pt[1] = G4ThreeVector(-fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1334 -fDz*fTthetaSphi-fDy, -fDz);
>> 1335 pt[2] = G4ThreeVector(-fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1336 -fDz*fTthetaSphi+fDy, -fDz);
>> 1337 pt[3] = G4ThreeVector(-fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1338 -fDz*fTthetaSphi+fDy, -fDz);
>> 1339 pt[4] = G4ThreeVector(+fDz*fTthetaCphi-fDy*fTalpha-fDx,
>> 1340 +fDz*fTthetaSphi-fDy, +fDz);
>> 1341 pt[5] = G4ThreeVector(+fDz*fTthetaCphi-fDy*fTalpha+fDx,
>> 1342 +fDz*fTthetaSphi-fDy, +fDz);
>> 1343 pt[6] = G4ThreeVector(+fDz*fTthetaCphi+fDy*fTalpha-fDx,
>> 1344 +fDz*fTthetaSphi+fDy, +fDz);
>> 1345 pt[7] = G4ThreeVector(+fDz*fTthetaCphi+fDy*fTalpha+fDx,
>> 1346 +fDz*fTthetaSphi+fDy, +fDz);
>> 1347
>> 1348 // make sure we provide the points in a clockwise fashion
>> 1349
>> 1350 One = GetPointOnPlane(pt[0],pt[1],pt[3],pt[2], aOne);
>> 1351 Two = GetPointOnPlane(pt[4],pt[5],pt[7],pt[6], aTwo);
>> 1352 Three = GetPointOnPlane(pt[6],pt[7],pt[3],pt[2], aThree);
>> 1353 Four = GetPointOnPlane(pt[4],pt[5],pt[1],pt[0], aFour);
>> 1354 Five = GetPointOnPlane(pt[0],pt[2],pt[6],pt[4], aFive);
>> 1355 Six = GetPointOnPlane(pt[1],pt[3],pt[7],pt[5], aSix);
>> 1356
>> 1357 chose = RandFlat::shoot(0.,aOne+aTwo+aThree+aFour+aFive+aSix);
>> 1358
>> 1359 if( (chose>=0.) && (chose<aOne) )
>> 1360 { return One; }
>> 1361 else if(chose>=aOne && chose<aOne+aTwo)
>> 1362 { return Two; }
>> 1363 else if(chose>=aOne+aTwo && chose<aOne+aTwo+aThree)
>> 1364 { return Three; }
>> 1365 else if(chose>=aOne+aTwo+aThree && chose<aOne+aTwo+aThree+aFour)
>> 1366 { return Four; }
>> 1367 else if(chose>=aOne+aTwo+aThree+aFour && chose<aOne+aTwo+aThree+aFour+aFive)
>> 1368 { return Five; }
>> 1369 return Six;
>> 1370 }
>> 1371
>> 1372 ////////////////////////////////////////////////////////////////////////////
898 // 1373 //
899 // Methods for visualisation 1374 // Methods for visualisation
900 1375
901 void G4Para::DescribeYourselfTo ( G4VGraphicsS 1376 void G4Para::DescribeYourselfTo ( G4VGraphicsScene& scene ) const
902 { 1377 {
903 scene.AddSolid (*this); 1378 scene.AddSolid (*this);
904 } 1379 }
905 1380
906 G4Polyhedron* G4Para::CreatePolyhedron () cons 1381 G4Polyhedron* G4Para::CreatePolyhedron () const
907 { 1382 {
908 G4double phi = std::atan2(fTthetaSphi, fTthe 1383 G4double phi = std::atan2(fTthetaSphi, fTthetaCphi);
909 G4double alpha = std::atan(fTalpha); 1384 G4double alpha = std::atan(fTalpha);
910 G4double theta = std::atan(std::sqrt(fTtheta << 1385 G4double theta = std::atan(std::sqrt(fTthetaCphi*fTthetaCphi
911 fTtheta << 1386 +fTthetaSphi*fTthetaSphi));
912 1387
913 return new G4PolyhedronPara(fDx, fDy, fDz, a 1388 return new G4PolyhedronPara(fDx, fDy, fDz, alpha, theta, phi);
914 } 1389 }
915 #endif <<
916 1390