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26 // class G4BrentLocator implementation << 26 // $Id: G4BrentLocator.cc,v 1.8 2009/05/15 12:55:48 tnikitin Exp $
>> 27 // GEANT4 tag $Name: geant4-09-03-patch-01 $
>> 28 //
>> 29 // Class G4BrentLocator implementation
27 // 30 //
28 // 27.10.08 - Tatiana Nikitina. 31 // 27.10.08 - Tatiana Nikitina.
29 // 04.10.11 - John Apostolakis, revised conver <<
30 // ------------------------------------------- 32 // ---------------------------------------------------------------------------
31 33
32 #include <iomanip> <<
33 <<
34 #include "G4BrentLocator.hh" 34 #include "G4BrentLocator.hh"
35 #include "G4ios.hh" 35 #include "G4ios.hh"
>> 36 #include <iomanip>
36 37
37 G4BrentLocator::G4BrentLocator(G4Navigator *th 38 G4BrentLocator::G4BrentLocator(G4Navigator *theNavigator)
38 : G4VIntersectionLocator(theNavigator) << 39 : G4VIntersectionLocator(theNavigator)
39 { 40 {
40 // In case of too slow progress in finding I 41 // In case of too slow progress in finding Intersection Point
41 // intermediates Points on the Track must be 42 // intermediates Points on the Track must be stored.
42 // Initialise the array of Pointers [max_dep 43 // Initialise the array of Pointers [max_depth+1] to do this
43 44
44 G4ThreeVector zeroV(0.0,0.0,0.0); 45 G4ThreeVector zeroV(0.0,0.0,0.0);
45 for (auto & idepth : ptrInterMedFT) << 46 for (G4int idepth=0; idepth<max_depth+1; idepth++ )
46 { 47 {
47 idepth = new G4FieldTrack( zeroV, zeroV, 0 << 48 ptrInterMedFT[ idepth ] = new G4FieldTrack( zeroV, zeroV, 0., 0., 0., 0.);
48 } 49 }
>> 50
>> 51 // Counters for Locator
>> 52
>> 53 // Counter for Maximum Number Of Trial before Intersection Found
>> 54 //
>> 55 maxNumberOfStepsForIntersection=0;
>> 56
>> 57 // Counter for Number Of Calls to ReIntegrationEndPoint Method
>> 58 //
>> 59 maxNumberOfCallsToReIntegration=0;
>> 60 maxNumberOfCallsToReIntegration_depth=0;
49 } 61 }
50 62
51 G4BrentLocator::~G4BrentLocator() 63 G4BrentLocator::~G4BrentLocator()
52 { 64 {
53 for (auto & idepth : ptrInterMedFT) << 65 for ( G4int idepth=0; idepth<max_depth+1; idepth++)
54 { 66 {
55 delete idepth; << 67 delete ptrInterMedFT[idepth];
56 } 68 }
>> 69 #ifdef G4DEBUG_FIELD
>> 70 if(fVerboseLevel>0)
>> 71 {
>> 72 G4cout << "G4BrentLocator::Location with Max Number of Steps="
>> 73 << maxNumberOfStepsForIntersection<<G4endl;
>> 74 G4cout << "G4BrentLocator::ReIntegrateEndPoint was called "
>> 75 << maxNumberOfCallsToReIntegration
>> 76 << " times and for depth algorithm "
>> 77 << maxNumberOfCallsToReIntegration_depth << " times." << G4endl;
>> 78 }
>> 79 #endif
57 } 80 }
58 81
59 // ------------------------------------------- 82 // --------------------------------------------------------------------------
60 // G4bool G4PropagatorInField::LocateIntersect 83 // G4bool G4PropagatorInField::LocateIntersectionPoint(
61 // const G4FieldTrack& CurveStart 84 // const G4FieldTrack& CurveStartPointVelocity, // A
62 // const G4FieldTrack& CurveEndPo 85 // const G4FieldTrack& CurveEndPointVelocity, // B
63 // const G4ThreeVector& TrialPoint 86 // const G4ThreeVector& TrialPoint, // E
64 // G4FieldTrack& Intersecte 87 // G4FieldTrack& IntersectedOrRecalculated // Output
65 // G4bool& recalculat 88 // G4bool& recalculated) // Out
66 // ------------------------------------------- 89 // --------------------------------------------------------------------------
67 // 90 //
68 // Function that returns the intersection of t 91 // Function that returns the intersection of the true path with the surface
69 // of the current volume (either the external 92 // of the current volume (either the external one or the inner one with one
70 // of the daughters: 93 // of the daughters:
71 // 94 //
72 // A = Initial point 95 // A = Initial point
73 // B = another point 96 // B = another point
74 // 97 //
75 // Both A and B are assumed to be on the true 98 // Both A and B are assumed to be on the true path:
76 // 99 //
77 // E is the first point of intersection of 100 // E is the first point of intersection of the chord AB with
78 // a volume other than A (on the surface 101 // a volume other than A (on the surface of A or of a daughter)
79 // 102 //
80 // Convention of Use : 103 // Convention of Use :
81 // i) If it returns "true", then Intersect 104 // i) If it returns "true", then IntersectionPointVelocity is set
82 // to the approximate intersection poin 105 // to the approximate intersection point.
83 // ii) If it returns "false", no intersecti 106 // ii) If it returns "false", no intersection was found.
84 // The validity of IntersectedOrRecalcu 107 // The validity of IntersectedOrRecalculated depends on 'recalculated'
85 // a) if latter is false, then Intersec 108 // a) if latter is false, then IntersectedOrRecalculated is invalid.
86 // b) if latter is true, then Intersec 109 // b) if latter is true, then IntersectedOrRecalculated is
87 // the new endpoint, due to a re-int 110 // the new endpoint, due to a re-integration.
88 // ------------------------------------------- 111 // --------------------------------------------------------------------------
89 // NOTE: implementation taken from G4Propagato 112 // NOTE: implementation taken from G4PropagatorInField
90 // New second order locator is added 113 // New second order locator is added
91 // 114 //
92 G4bool G4BrentLocator::EstimateIntersectionPoi 115 G4bool G4BrentLocator::EstimateIntersectionPoint(
93 const G4FieldTrack& CurveStart 116 const G4FieldTrack& CurveStartPointVelocity, // A
94 const G4FieldTrack& CurveEndPo 117 const G4FieldTrack& CurveEndPointVelocity, // B
95 const G4ThreeVector& TrialPoint 118 const G4ThreeVector& TrialPoint, // E
96 G4FieldTrack& Intersecte 119 G4FieldTrack& IntersectedOrRecalculatedFT, // Output
97 G4bool& recalculat 120 G4bool& recalculatedEndPoint, // Out
98 G4double& fPreviousS 121 G4double& fPreviousSafety, // In/Out
99 G4ThreeVector& fPreviousS 122 G4ThreeVector& fPreviousSftOrigin) // In/Out
100 123
101 { 124 {
102 // Find Intersection Point ( A, B, E ) of t 125 // Find Intersection Point ( A, B, E ) of true path AB - start at E.
103 126
104 G4bool found_approximate_intersection = fals 127 G4bool found_approximate_intersection = false;
105 G4bool there_is_no_intersection = fals 128 G4bool there_is_no_intersection = false;
106 129
107 G4FieldTrack CurrentA_PointVelocity = Curve 130 G4FieldTrack CurrentA_PointVelocity = CurveStartPointVelocity;
108 G4FieldTrack CurrentB_PointVelocity = Curve 131 G4FieldTrack CurrentB_PointVelocity = CurveEndPointVelocity;
109 G4ThreeVector CurrentE_Point = TrialPoint; 132 G4ThreeVector CurrentE_Point = TrialPoint;
110 G4bool validNormalAtE = false; <<
111 G4ThreeVector NormalAtEntry; <<
112 <<
113 G4FieldTrack ApproxIntersecPointV(CurveEndP 133 G4FieldTrack ApproxIntersecPointV(CurveEndPointVelocity); // FT-Def-Construct
114 G4double NewSafety = 0.0; 134 G4double NewSafety = 0.0;
115 G4bool last_AF_intersection = false; 135 G4bool last_AF_intersection = false;
116 136
117 // G4bool final_section= true; // Shows whe 137 // G4bool final_section= true; // Shows whether current section is last
118 // (i.e. B=f 138 // (i.e. B=full end)
119 G4bool first_section = true; 139 G4bool first_section = true;
120 recalculatedEndPoint = false; 140 recalculatedEndPoint = false;
121 141
122 G4bool restoredFullEndpoint = false; 142 G4bool restoredFullEndpoint = false;
123 143
124 G4long oldprc; // cout, cerr precision <<
125 G4int substep_no = 0; 144 G4int substep_no = 0;
126 145
127 // Limits for substep number 146 // Limits for substep number
128 // 147 //
129 const G4int max_substeps= 10000; // Test 148 const G4int max_substeps= 10000; // Test 120 (old value 100 )
130 const G4int warn_substeps= 1000; // 149 const G4int warn_substeps= 1000; // 100
131 150
132 // Statistics for substeps 151 // Statistics for substeps
133 // 152 //
134 static G4ThreadLocal G4int max_no_seen= -1; << 153 static G4int max_no_seen= -1;
>> 154 static G4int trigger_substepno_print= warn_substeps - 20 ;
135 155
136 // Counter for restarting Bintermed 156 // Counter for restarting Bintermed
137 // 157 //
138 G4int restartB = 0; 158 G4int restartB = 0;
139 159
140 //------------------------------------------ 160 //--------------------------------------------------------------------------
141 // Algorithm for the case if progress in fo 161 // Algorithm for the case if progress in founding intersection is too slow.
142 // Process is defined too slow if after N=p 162 // Process is defined too slow if after N=param_substeps advances on the
143 // path, it will be only 'fraction_done' of 163 // path, it will be only 'fraction_done' of the total length.
144 // In this case the remaining length is div 164 // In this case the remaining length is divided in two half and
145 // the loop is restarted for each half. 165 // the loop is restarted for each half.
146 // If progress is still too slow, the divis 166 // If progress is still too slow, the division in two halfs continue
147 // until 'max_depth'. 167 // until 'max_depth'.
148 //------------------------------------------ 168 //--------------------------------------------------------------------------
149 169
150 const G4int param_substeps = 50; // Test val << 170 const G4int param_substeps=50; // Test value for the maximum number
151 // of subst << 171 // of substeps
152 const G4double fraction_done = 0.3; << 172 const G4double fraction_done=0.3;
153 173
154 G4bool Second_half = false; // First hal 174 G4bool Second_half = false; // First half or second half of divided step
155 175
156 NormalAtEntry = GetSurfaceNormal(CurrentE_Po <<
157 <<
158 // We need to know this for the 'final_secti 176 // We need to know this for the 'final_section':
159 // real 'final_section' or first half 'final 177 // real 'final_section' or first half 'final_section'
160 // In algorithm it is considered that the 'S 178 // In algorithm it is considered that the 'Second_half' is true
161 // and it becomes false only if we are in th 179 // and it becomes false only if we are in the first-half of level
162 // depthness or if we are in the first secti 180 // depthness or if we are in the first section
163 181
164 G4int depth = 0; // Depth counts how many su << 182 G4int depth=0; // Depth counts how many subdivisions of initial step made
165 183
166 #ifdef G4DEBUG_FIELD 184 #ifdef G4DEBUG_FIELD
167 const G4double tolerance = 1.0e-8; << 185 static G4double tolerance= 1.0e-8;
168 G4ThreeVector StartPosition = CurveStartPoi << 186 G4ThreeVector StartPosition= CurveStartPointVelocity.GetPosition();
169 if( (TrialPoint - StartPosition).mag() < tol << 187 if( (TrialPoint - StartPosition).mag() < tolerance * mm )
170 { 188 {
>> 189 G4cerr << "WARNING - G4BrentLocator::EstimateIntersectionPoint()"
>> 190 << G4endl
>> 191 << " Intermediate F point is on top of starting point A."
>> 192 << G4endl;
171 G4Exception("G4BrentLocator::EstimateInte 193 G4Exception("G4BrentLocator::EstimateIntersectionPoint()",
172 "GeomNav1002", JustWarning, << 194 "IntersectionPointIsAtStart", JustWarning,
173 "Intersection point F is exac 195 "Intersection point F is exactly at start point A." );
174 } 196 }
175 #endif 197 #endif
176 198
177 // Intermediates Points on the Track = Subdi 199 // Intermediates Points on the Track = Subdivided Points must be stored.
178 // Give the initial values to 'InterMedFt' 200 // Give the initial values to 'InterMedFt'
179 // Important is 'ptrInterMedFT[0]', it saves 201 // Important is 'ptrInterMedFT[0]', it saves the 'EndCurvePoint'
180 // 202 //
181 *ptrInterMedFT[0] = CurveEndPointVelocity; 203 *ptrInterMedFT[0] = CurveEndPointVelocity;
182 for (auto idepth=1; idepth<max_depth+1; ++id << 204 for (G4int idepth=1; idepth<max_depth+1; idepth++ )
183 { 205 {
184 *ptrInterMedFT[idepth] = CurveStartPointVe << 206 *ptrInterMedFT[idepth]=CurveStartPointVelocity;
185 } 207 }
186 208
187 //Final_section boolean store 209 //Final_section boolean store
188 G4bool fin_section_depth[max_depth]; 210 G4bool fin_section_depth[max_depth];
189 for (bool & idepth : fin_section_depth) << 211 for (G4int idepth=0; idepth<max_depth; idepth++ )
190 { 212 {
191 idepth = true; << 213 fin_section_depth[idepth]=true;
192 } 214 }
193 215
194 // 'SubStartPoint' is needed to calculate th 216 // 'SubStartPoint' is needed to calculate the length of the divided step
195 // 217 //
196 G4FieldTrack SubStart_PointVelocity = CurveS 218 G4FieldTrack SubStart_PointVelocity = CurveStartPointVelocity;
197 219
198 do // Loop checking, 07.10.2016, J.Apostol << 220 do
199 { 221 {
200 G4int substep_no_p = 0; 222 G4int substep_no_p = 0;
201 G4bool sub_final_section = false; // the s 223 G4bool sub_final_section = false; // the same as final_section,
202 // but f 224 // but for 'sub_section'
203 SubStart_PointVelocity = CurrentA_PointVel 225 SubStart_PointVelocity = CurrentA_PointVelocity;
204 << 226 do // REPEAT param
205 do // Loop checking, 07.10.2016, J.Apost << 227 {
206 { // REPEAT param <<
207 G4ThreeVector Point_A = CurrentA_PointVe 228 G4ThreeVector Point_A = CurrentA_PointVelocity.GetPosition();
208 G4ThreeVector Point_B = CurrentB_PointVe 229 G4ThreeVector Point_B = CurrentB_PointVelocity.GetPosition();
209 230
210 // F = a point on true AB path close to 231 // F = a point on true AB path close to point E
211 // (the closest if possible) 232 // (the closest if possible)
212 // 233 //
213 if(substep_no_p==0) 234 if(substep_no_p==0)
214 { 235 {
215 ApproxIntersecPointV = GetChordFinderF 236 ApproxIntersecPointV = GetChordFinderFor()
216 ->ApproxCurvePo 237 ->ApproxCurvePointV( CurrentA_PointVelocity,
217 238 CurrentB_PointVelocity,
218 239 CurrentE_Point,
219 240 GetEpsilonStepFor());
220 // The above method is the key & mo 241 // The above method is the key & most intuitive part ...
221 } 242 }
222 #ifdef G4DEBUG_FIELD 243 #ifdef G4DEBUG_FIELD
223 if( ApproxIntersecPointV.GetCurveLength( 244 if( ApproxIntersecPointV.GetCurveLength() >
224 CurrentB_PointVelocity.GetCurveLengt 245 CurrentB_PointVelocity.GetCurveLength() * (1.0 + tolerance) )
225 { 246 {
>> 247 G4cerr << "ERROR - G4BrentLocator::EstimateIntersectionPoint()"
>> 248 << G4endl
>> 249 << " Intermediate F point is more advanced than"
>> 250 << " endpoint B." << G4endl;
226 G4Exception("G4BrentLocator::EstimateI 251 G4Exception("G4BrentLocator::EstimateIntersectionPoint()",
227 "GeomNav0003", FatalExcept << 252 "IntermediatePointConfusion", FatalException,
228 "Intermediate F point is p 253 "Intermediate F point is past end B point" );
229 } 254 }
230 #endif 255 #endif
231 256
232 G4ThreeVector CurrentF_Point = ApproxInt << 257 G4ThreeVector CurrentF_Point= ApproxIntersecPointV.GetPosition();
233 258
234 // First check whether EF is small - the 259 // First check whether EF is small - then F is a good approx. point
235 // Calculate the length and direction of 260 // Calculate the length and direction of the chord AF
236 // 261 //
237 G4ThreeVector ChordEF_Vector = CurrentF 262 G4ThreeVector ChordEF_Vector = CurrentF_Point - CurrentE_Point;
238 G4ThreeVector NewMomentumDir = ApproxIn <<
239 G4double MomDir_dot_Norm = NewMome <<
240 <<
241 #ifdef G4DEBUG_FIELD <<
242 G4ThreeVector ChordAB = Point_B - Point <<
243 263
244 G4VIntersectionLocator::ReportTrialStep( << 264 if ( ChordEF_Vector.mag2() <= sqr(GetDeltaIntersectionFor()) )
245 ChordEF_Vector, NewMomentumDir, <<
246 #endif <<
247 <<
248 G4bool adequate_angle; <<
249 adequate_angle = ( MomDir_dot_Norm >= 0 <<
250 || (! validNormalAtE ); <<
251 G4double EF_dist2 = ChordEF_Vector.mag2( <<
252 if ( ( EF_dist2 <= sqr(fiDeltaIntersecti <<
253 || ( EF_dist2 <= kCarTolerance*kCarTol <<
254 { 265 {
255 found_approximate_intersection = true; 266 found_approximate_intersection = true;
256 267
257 // Create the "point" return value 268 // Create the "point" return value
258 // 269 //
259 IntersectedOrRecalculatedFT = ApproxIn 270 IntersectedOrRecalculatedFT = ApproxIntersecPointV;
260 IntersectedOrRecalculatedFT.SetPositio 271 IntersectedOrRecalculatedFT.SetPosition( CurrentE_Point );
261 272
262 if ( GetAdjustementOfFoundIntersection 273 if ( GetAdjustementOfFoundIntersection() )
263 { 274 {
264 // Try to Get Correction of Intersec 275 // Try to Get Correction of IntersectionPoint using SurfaceNormal()
265 // 276 //
266 G4ThreeVector IP; 277 G4ThreeVector IP;
267 G4ThreeVector MomentumDir=ApproxInte 278 G4ThreeVector MomentumDir=ApproxIntersecPointV.GetMomentumDirection();
268 G4bool goodCorrection = AdjustmentOf 279 G4bool goodCorrection = AdjustmentOfFoundIntersection( Point_A,
269 CurrentE_P 280 CurrentE_Point, CurrentF_Point, MomentumDir,
270 last_AF_in 281 last_AF_intersection, IP, NewSafety,
271 fPreviousS 282 fPreviousSafety, fPreviousSftOrigin );
272 if ( goodCorrection ) 283 if ( goodCorrection )
273 { 284 {
274 IntersectedOrRecalculatedFT = Appr 285 IntersectedOrRecalculatedFT = ApproxIntersecPointV;
275 IntersectedOrRecalculatedFT.SetPos 286 IntersectedOrRecalculatedFT.SetPosition(IP);
276 } 287 }
277 } 288 }
278 289
279 // Note: in order to return a point on 290 // Note: in order to return a point on the boundary,
280 // we must return E. But it is F 291 // we must return E. But it is F on the curve.
281 // So we must "cheat": we are us 292 // So we must "cheat": we are using the position at point E
282 // and the velocity at point F ! 293 // and the velocity at point F !!!
283 // 294 //
284 // This must limit the length we can a 295 // This must limit the length we can allow for displacement!
285 } 296 }
286 else // E is NOT close enough to the cu 297 else // E is NOT close enough to the curve (ie point F)
287 { 298 {
288 // Check whether any volumes are encou 299 // Check whether any volumes are encountered by the chord AF
289 // ----------------------------------- 300 // ---------------------------------------------------------
290 // First relocate to restore any Voxel 301 // First relocate to restore any Voxel etc information
291 // in the Navigator before calling Com 302 // in the Navigator before calling ComputeStep()
292 // 303 //
293 GetNavigatorFor()->LocateGlobalPointWi 304 GetNavigatorFor()->LocateGlobalPointWithinVolume( Point_A );
294 305
295 G4ThreeVector PointG; // Candidate i 306 G4ThreeVector PointG; // Candidate intersection point
296 G4double stepLengthAF; 307 G4double stepLengthAF;
297 G4bool usedNavigatorAF = false; <<
298 G4bool Intersects_AF = IntersectChord( 308 G4bool Intersects_AF = IntersectChord( Point_A, CurrentF_Point,
299 309 NewSafety,fPreviousSafety,
300 310 fPreviousSftOrigin,
301 311 stepLengthAF,
302 << 312 PointG );
303 <<
304 last_AF_intersection = Intersects_AF; 313 last_AF_intersection = Intersects_AF;
305 if( Intersects_AF ) 314 if( Intersects_AF )
306 { 315 {
307 // G is our new Candidate for the in 316 // G is our new Candidate for the intersection point.
308 // It replaces "E" and we will repe 317 // It replaces "E" and we will repeat the test to see if
309 // it is a good enough approximate p 318 // it is a good enough approximate point for us.
310 // B <- F 319 // B <- F
311 // E <- G 320 // E <- G
312 // 321 //
313 G4FieldTrack EndPoint = ApproxInters 322 G4FieldTrack EndPoint = ApproxIntersecPointV;
314 ApproxIntersecPointV = GetChordFinde 323 ApproxIntersecPointV = GetChordFinderFor()->ApproxCurvePointS(
315 CurrentA_Poin 324 CurrentA_PointVelocity, CurrentB_PointVelocity,
316 EndPoint,Curr 325 EndPoint,CurrentE_Point, CurrentF_Point,PointG,
317 true, GetEpsi 326 true, GetEpsilonStepFor() );
318 CurrentB_PointVelocity = EndPoint; 327 CurrentB_PointVelocity = EndPoint;
319 CurrentE_Point = PointG; 328 CurrentE_Point = PointG;
320 <<
321 // Need to recalculate the Exit Norm <<
322 // Know that a call was made to Navi <<
323 // IntersectChord above. <<
324 // <<
325 G4bool validNormalLast; <<
326 NormalAtEntry = GetSurfaceNormal( P <<
327 validNormalAtE = validNormalLast; <<
328 329
329 // By moving point B, must take care 330 // By moving point B, must take care if current
330 // AF has no intersection to try cur 331 // AF has no intersection to try current FB!!
331 // 332 //
332 fin_section_depth[depth] = false; 333 fin_section_depth[depth] = false;
333 #ifdef G4VERBOSE 334 #ifdef G4VERBOSE
334 if( fVerboseLevel > 3 ) 335 if( fVerboseLevel > 3 )
335 { 336 {
336 G4cout << "G4PiF::LI> Investigatin 337 G4cout << "G4PiF::LI> Investigating intermediate point"
337 << " at s=" << ApproxInters 338 << " at s=" << ApproxIntersecPointV.GetCurveLength()
338 << " on way to full s=" 339 << " on way to full s="
339 << CurveEndPointVelocity.Ge 340 << CurveEndPointVelocity.GetCurveLength() << G4endl;
340 } 341 }
341 #endif 342 #endif
342 } 343 }
343 else // not Intersects_AF 344 else // not Intersects_AF
344 { 345 {
345 // In this case: 346 // In this case:
346 // There is NO intersection of AF wi 347 // There is NO intersection of AF with a volume boundary.
347 // We must continue the search in th 348 // We must continue the search in the segment FB!
348 // 349 //
349 GetNavigatorFor()->LocateGlobalPoint 350 GetNavigatorFor()->LocateGlobalPointWithinVolume( CurrentF_Point );
350 351
351 G4double stepLengthFB; 352 G4double stepLengthFB;
352 G4ThreeVector PointH; 353 G4ThreeVector PointH;
353 G4bool usedNavigatorFB = false; <<
354 354
355 // Check whether any volumes are enc 355 // Check whether any volumes are encountered by the chord FB
356 // --------------------------------- 356 // ---------------------------------------------------------
357 357
358 G4bool Intersects_FB = IntersectChor 358 G4bool Intersects_FB = IntersectChord( CurrentF_Point, Point_B,
359 359 NewSafety,fPreviousSafety,
360 360 fPreviousSftOrigin,
361 361 stepLengthFB,
362 << 362 PointH );
363 <<
364 if( Intersects_FB ) 363 if( Intersects_FB )
365 { 364 {
366 // There is an intersection of FB 365 // There is an intersection of FB with a volume boundary
367 // H <- First Intersection of Chor 366 // H <- First Intersection of Chord FB
368 367
369 // H is our new Candidate for the 368 // H is our new Candidate for the intersection point.
370 // It replaces "E" and we will re 369 // It replaces "E" and we will repeat the test to see if
371 // it is a good enough approximate 370 // it is a good enough approximate point for us.
372 371
373 // Note that F must be in volume v 372 // Note that F must be in volume volA (the same as A)
374 // (otherwise AF would meet a volu 373 // (otherwise AF would meet a volume boundary!)
375 // A <- F 374 // A <- F
376 // E <- H 375 // E <- H
377 // 376 //
378 G4FieldTrack InterMed = ApproxInte << 377 G4FieldTrack InterMed=ApproxIntersecPointV;
379 ApproxIntersecPointV = GetChordFin 378 ApproxIntersecPointV = GetChordFinderFor()->ApproxCurvePointS(
380 CurrentA_PointVeloci 379 CurrentA_PointVelocity,CurrentB_PointVelocity,
381 InterMed,CurrentE_Po 380 InterMed,CurrentE_Point,CurrentF_Point,PointH,
382 false,GetEpsilonStep 381 false,GetEpsilonStepFor());
383 CurrentA_PointVelocity = InterMed; 382 CurrentA_PointVelocity = InterMed;
384 CurrentE_Point = PointH; 383 CurrentE_Point = PointH;
385 <<
386 // Need to recalculate the Exit No <<
387 // <<
388 G4bool validNormalLast; <<
389 NormalAtEntry = GetSurfaceNormal( <<
390 validNormalAtE = validNormalLast; <<
391 } 384 }
392 else // not Intersects_FB 385 else // not Intersects_FB
393 { 386 {
394 // There is NO intersection of FB 387 // There is NO intersection of FB with a volume boundary
395 388
396 if( fin_section_depth[depth] ) 389 if( fin_section_depth[depth] )
397 { 390 {
398 // If B is the original endpoint 391 // If B is the original endpoint, this means that whatever
399 // volume(s) intersected the ori 392 // volume(s) intersected the original chord, none touch the
400 // smaller chords we have used. 393 // smaller chords we have used.
401 // The value of 'IntersectedOrRe 394 // The value of 'IntersectedOrRecalculatedFT' returned is
402 // likely not valid 395 // likely not valid
403 396
404 // Check on real final_section o 397 // Check on real final_section or SubEndSection
405 // 398 //
406 if( ((Second_half)&&(depth==0)) 399 if( ((Second_half)&&(depth==0)) || (first_section) )
407 { 400 {
408 there_is_no_intersection = tru 401 there_is_no_intersection = true; // real final_section
409 } 402 }
410 else 403 else
411 { 404 {
412 // end of subsection, not real 405 // end of subsection, not real final section
413 // exit from the and go to the 406 // exit from the and go to the depth-1 level
414 407
415 substep_no_p = param_substeps+ 408 substep_no_p = param_substeps+2; // exit from the loop
416 409
417 // but 'Second_half' is still 410 // but 'Second_half' is still true because we need to find
418 // the 'CurrentE_point' for th 411 // the 'CurrentE_point' for the next loop
419 // 412 //
420 Second_half = true; 413 Second_half = true;
421 sub_final_section = true; 414 sub_final_section = true;
422 } 415 }
423 } 416 }
424 else 417 else
425 { 418 {
426 if( depth==0 ) << 419 if(depth==0)
427 { 420 {
428 // We must restore the origina 421 // We must restore the original endpoint
429 // 422 //
430 CurrentA_PointVelocity = Curre 423 CurrentA_PointVelocity = CurrentB_PointVelocity; // Got to B
431 CurrentB_PointVelocity = Curve 424 CurrentB_PointVelocity = CurveEndPointVelocity;
432 SubStart_PointVelocity = Curre 425 SubStart_PointVelocity = CurrentA_PointVelocity;
433 ApproxIntersecPointV = GetChor 426 ApproxIntersecPointV = GetChordFinderFor()
434 ->ApproxCurvePo 427 ->ApproxCurvePointV( CurrentA_PointVelocity,
435 428 CurrentB_PointVelocity,
436 429 CurrentE_Point,
437 430 GetEpsilonStepFor());
438 431
439 restoredFullEndpoint = true; 432 restoredFullEndpoint = true;
440 ++restartB; // counter << 433 restartB++; // counter
441 } 434 }
442 else 435 else
443 { 436 {
444 // We must restore the depth e 437 // We must restore the depth endpoint
445 // 438 //
446 CurrentA_PointVelocity = Curre 439 CurrentA_PointVelocity = CurrentB_PointVelocity; // Got to B
447 CurrentB_PointVelocity = *ptr 440 CurrentB_PointVelocity = *ptrInterMedFT[depth];
448 SubStart_PointVelocity = Curre 441 SubStart_PointVelocity = CurrentA_PointVelocity;
449 ApproxIntersecPointV = GetChor 442 ApproxIntersecPointV = GetChordFinderFor()
450 ->ApproxCurvePo 443 ->ApproxCurvePointV( CurrentA_PointVelocity,
451 444 CurrentB_PointVelocity,
452 445 CurrentE_Point,
453 446 GetEpsilonStepFor());
454 restoredFullEndpoint = true; 447 restoredFullEndpoint = true;
455 ++restartB; // counter << 448 restartB++; // counter
456 } 449 }
457 } 450 }
458 } // Endif (Intersects_FB) 451 } // Endif (Intersects_FB)
459 } // Endif (Intersects_AF) 452 } // Endif (Intersects_AF)
460 453
461 // Ensure that the new endpoints are n 454 // Ensure that the new endpoints are not further apart in space
462 // than on the curve due to different 455 // than on the curve due to different errors in the integration
463 // 456 //
464 G4double linDistSq, curveDist; 457 G4double linDistSq, curveDist;
465 linDistSq = ( CurrentB_PointVelocity.G 458 linDistSq = ( CurrentB_PointVelocity.GetPosition()
466 - CurrentA_PointVelocity.G 459 - CurrentA_PointVelocity.GetPosition() ).mag2();
467 curveDist = CurrentB_PointVelocity.Get 460 curveDist = CurrentB_PointVelocity.GetCurveLength()
468 - CurrentA_PointVelocity.G 461 - CurrentA_PointVelocity.GetCurveLength();
469 462
470 // Change this condition for very stri 463 // Change this condition for very strict parameters of propagation
471 // 464 //
472 if( curveDist*curveDist*(1+2* GetEpsil 465 if( curveDist*curveDist*(1+2* GetEpsilonStepFor()) < linDistSq )
473 { 466 {
474 // Re-integrate to obtain a new B 467 // Re-integrate to obtain a new B
475 // 468 //
476 G4FieldTrack newEndPointFT= 469 G4FieldTrack newEndPointFT=
477 ReEstimateEndpoint( CurrentA 470 ReEstimateEndpoint( CurrentA_PointVelocity,
478 CurrentB 471 CurrentB_PointVelocity,
479 linDistS 472 linDistSq, // to avoid recalculation
480 curveDis 473 curveDist );
481 G4FieldTrack oldPointVelB = CurrentB 474 G4FieldTrack oldPointVelB = CurrentB_PointVelocity;
482 CurrentB_PointVelocity = newEndPoint 475 CurrentB_PointVelocity = newEndPointFT;
483 476
484 if ( (fin_section_depth[depth]) 477 if ( (fin_section_depth[depth]) // real final section
485 &&( first_section || ((Second_ha 478 &&( first_section || ((Second_half)&&(depth==0)) ) )
486 { 479 {
487 recalculatedEndPoint = true; 480 recalculatedEndPoint = true;
488 IntersectedOrRecalculatedFT = newE 481 IntersectedOrRecalculatedFT = newEndPointFT;
489 // So that we can return it, if 482 // So that we can return it, if it is the endpoint!
490 } 483 }
491 } 484 }
492 if( curveDist < 0.0 ) 485 if( curveDist < 0.0 )
493 { 486 {
>> 487 G4cerr << "ERROR - G4BrentLocator::EstimateIntersectionPoint()"
>> 488 << G4endl
>> 489 << " Error in advancing propagation." << G4endl;
494 fVerboseLevel = 5; // Print out a ma 490 fVerboseLevel = 5; // Print out a maximum of information
495 printStatus( CurrentA_PointVelocity, 491 printStatus( CurrentA_PointVelocity, CurrentB_PointVelocity,
496 -1.0, NewSafety, subst 492 -1.0, NewSafety, substep_no );
497 std::ostringstream message; << 493 G4cerr << " Point A (start) is " << CurrentA_PointVelocity
498 message << "Error in advancing propa << 494 << G4endl;
499 << " Error in advanci << 495 G4cerr << " Point B (end) is " << CurrentB_PointVelocity
500 << " Point A (start) << 496 << G4endl;
501 << G4endl << 497 G4cerr << " Curve distance is " << curveDist << G4endl;
502 << " Point B (end) << 498 G4cerr << G4endl
503 << G4endl << 499 << "The final curve point is not further along"
504 << " Curve distance i << 500 << " than the original!" << G4endl;
505 << G4endl <<
506 << "The final curve point is <<
507 << " than the original!" << <<
508 501
509 if( recalculatedEndPoint ) 502 if( recalculatedEndPoint )
510 { 503 {
511 message << "Recalculation of EndPo << 504 G4cerr << "Recalculation of EndPoint was called with fEpsStep= "
512 << GetEpsilonStepFor() << << 505 << GetEpsilonStepFor() << G4endl;
513 } 506 }
514 oldprc = G4cerr.precision(20); << 507 G4cerr.precision(20);
515 message << " Point A (Curve start) << 508 G4cerr << " Point A (Curve start) is " << CurveStartPointVelocity
516 << G4endl << 509 << G4endl;
517 << " Point B (Curve end) << 510 G4cerr << " Point B (Curve end) is " << CurveEndPointVelocity
518 << G4endl << 511 << G4endl;
519 << " Point A (Current start) << 512 G4cerr << " Point A (Current start) is " << CurrentA_PointVelocity
520 << G4endl << 513 << G4endl;
521 << " Point B (Current end) << 514 G4cerr << " Point B (Current end) is " << CurrentB_PointVelocity
522 << G4endl << 515 << G4endl;
523 << " Point S (Sub start) << 516 G4cerr << " Point S (Sub start) is " << SubStart_PointVelocity
524 << G4endl << 517 << G4endl;
525 << " Point E (Trial Point) << 518 G4cerr << " Point E (Trial Point) is " << CurrentE_Point
526 << G4endl << 519 << G4endl;
527 << " Old Point F(Intersectio << 520 G4cerr << " Old Point F(Intersection) is " << CurrentF_Point
528 << G4endl << 521 << G4endl;
529 << " New Point F(Intersectio << 522 G4cerr << " New Point F(Intersection) is " << ApproxIntersecPointV
530 << G4endl << 523 << G4endl;
531 << " LocateIntersecti << 524 G4cerr << " LocateIntersection parameters are : Substep no= "
532 << substep_no << G4endl << 525 << substep_no << G4endl;
533 << " Substep depth no << 526 G4cerr << " Substep depth no= "<< substep_no_p << " Depth= "
534 << depth << G4endl << 527 << depth << G4endl;
535 << " Restarted no= "< << 528 G4cerr << " Restarted no= "<< restartB << " Epsilon= "
536 << GetEpsilonStepFor() <<" D << 529 << GetEpsilonStepFor() <<" DeltaInters= "
537 << GetDeltaIntersectionFor() << 530 << GetDeltaIntersectionFor() << G4endl;
538 G4cerr.precision( oldprc ); <<
539 531
540 G4Exception("G4BrentLocator::Estimat 532 G4Exception("G4BrentLocator::EstimateIntersectionPoint()",
541 "GeomNav0003", FatalExce << 533 "FatalError", FatalException,
>> 534 "Error in advancing propagation.");
542 } 535 }
543 536
544 if( restoredFullEndpoint ) << 537 if(restoredFullEndpoint)
545 { 538 {
546 fin_section_depth[depth] = restoredF 539 fin_section_depth[depth] = restoredFullEndpoint;
547 restoredFullEndpoint = false; 540 restoredFullEndpoint = false;
548 } 541 }
549 } // EndIf ( E is close enough to the cu 542 } // EndIf ( E is close enough to the curve, ie point F. )
550 // tests ChordAF_Vector.mag() <= maxim 543 // tests ChordAF_Vector.mag() <= maximum_lateral_displacement
551 544
552 #ifdef G4DEBUG_LOCATE_INTERSECTION 545 #ifdef G4DEBUG_LOCATE_INTERSECTION
553 G4int trigger_substepno_print= warn_subs <<
554 <<
555 if( substep_no >= trigger_substepno_prin 546 if( substep_no >= trigger_substepno_print )
556 { 547 {
557 G4cout << "Difficulty in converging in 548 G4cout << "Difficulty in converging in "
558 << "G4BrentLocator::EstimateInt 549 << "G4BrentLocator::EstimateIntersectionPoint()"
559 << G4endl 550 << G4endl
560 << " Substep no = " << subst 551 << " Substep no = " << substep_no << G4endl;
561 if( substep_no == trigger_substepno_pr 552 if( substep_no == trigger_substepno_print )
562 { 553 {
563 printStatus( CurveStartPointVelocity 554 printStatus( CurveStartPointVelocity, CurveEndPointVelocity,
564 -1.0, NewSafety, 0); 555 -1.0, NewSafety, 0);
565 } 556 }
566 G4cout << " State of point A: "; 557 G4cout << " State of point A: ";
567 printStatus( CurrentA_PointVelocity, C 558 printStatus( CurrentA_PointVelocity, CurrentA_PointVelocity,
568 -1.0, NewSafety, substep_ 559 -1.0, NewSafety, substep_no-1, 0);
569 G4cout << " State of point B: "; 560 G4cout << " State of point B: ";
570 printStatus( CurrentA_PointVelocity, C 561 printStatus( CurrentA_PointVelocity, CurrentB_PointVelocity,
571 -1.0, NewSafety, substep_ 562 -1.0, NewSafety, substep_no);
572 } 563 }
573 #endif 564 #endif
574 ++substep_no; << 565 substep_no++;
575 ++substep_no_p; << 566 substep_no_p++;
576 567
577 } while ( ( ! found_approximate_intersect 568 } while ( ( ! found_approximate_intersection )
578 && ( ! there_is_no_intersection ) 569 && ( ! there_is_no_intersection )
579 && ( substep_no_p <= param_substep 570 && ( substep_no_p <= param_substeps) ); // UNTIL found or
580 571 // failed param substep
581 first_section = false; 572 first_section = false;
582 573
583 if( (!found_approximate_intersection) && ( 574 if( (!found_approximate_intersection) && (!there_is_no_intersection) )
584 { 575 {
585 G4double did_len = std::abs( CurrentA_Po 576 G4double did_len = std::abs( CurrentA_PointVelocity.GetCurveLength()
586 - SubStart_PointVelocit 577 - SubStart_PointVelocity.GetCurveLength());
587 G4double all_len = std::abs( CurrentB_Po 578 G4double all_len = std::abs( CurrentB_PointVelocity.GetCurveLength()
588 - SubStart_PointVelocit 579 - SubStart_PointVelocity.GetCurveLength());
589 580
590 G4double stepLengthAB; 581 G4double stepLengthAB;
591 G4ThreeVector PointGe; 582 G4ThreeVector PointGe;
592 583
593 // Check if progress is too slow and if 584 // Check if progress is too slow and if it possible to go deeper,
594 // then halve the step if so 585 // then halve the step if so
595 // 586 //
596 if ( ( did_len < fraction_done*all_len ) 587 if ( ( did_len < fraction_done*all_len )
597 && (depth < max_depth) && (!sub_final_ << 588 && (depth<max_depth) && (!sub_final_section) )
598 { 589 {
599 Second_half=false; 590 Second_half=false;
600 ++depth; << 591 depth++;
601 592
602 G4double Sub_len = (all_len-did_len)/( 593 G4double Sub_len = (all_len-did_len)/(2.);
603 G4FieldTrack start = CurrentA_PointVel 594 G4FieldTrack start = CurrentA_PointVelocity;
604 auto integrDriver = << 595 G4MagInt_Driver* integrDriver =
605 GetChordFinderFor()-> 596 GetChordFinderFor()->GetIntegrationDriver();
606 integrDriver->AccurateAdvance(start, S 597 integrDriver->AccurateAdvance(start, Sub_len, GetEpsilonStepFor());
607 *ptrInterMedFT[depth] = start; 598 *ptrInterMedFT[depth] = start;
608 CurrentB_PointVelocity = *ptrInterMedF 599 CurrentB_PointVelocity = *ptrInterMedFT[depth];
609 600
610 // Adjust 'SubStartPoint' to calculate 601 // Adjust 'SubStartPoint' to calculate the 'did_length' in next loop
611 // 602 //
612 SubStart_PointVelocity = CurrentA_Poin 603 SubStart_PointVelocity = CurrentA_PointVelocity;
613 604
614 // Find new trial intersection point n 605 // Find new trial intersection point needed at start of the loop
615 // 606 //
616 G4ThreeVector Point_A = CurrentA_Point 607 G4ThreeVector Point_A = CurrentA_PointVelocity.GetPosition();
617 G4ThreeVector SubE_point = CurrentB_Po 608 G4ThreeVector SubE_point = CurrentB_PointVelocity.GetPosition();
618 609
619 GetNavigatorFor()->LocateGlobalPointWi 610 GetNavigatorFor()->LocateGlobalPointWithinVolume(Point_A);
620 G4bool Intersects_AB = IntersectChord( 611 G4bool Intersects_AB = IntersectChord(Point_A, SubE_point,
621 612 NewSafety, fPreviousSafety,
622 613 fPreviousSftOrigin,stepLengthAB,
623 614 PointGe);
624 if( Intersects_AB ) 615 if( Intersects_AB )
625 { 616 {
626 last_AF_intersection = Intersects_AB 617 last_AF_intersection = Intersects_AB;
627 CurrentE_Point = PointGe; 618 CurrentE_Point = PointGe;
628 fin_section_depth[depth] = true; << 619 fin_section_depth[depth]=true;
629 <<
630 // Need to recalculate the Exit Norm <<
631 // <<
632 G4bool validNormalAB; <<
633 NormalAtEntry = GetSurfaceNormal( Po <<
634 validNormalAtE = validNormalAB; <<
635 } 620 }
636 else 621 else
637 { 622 {
638 // No intersection found for first p 623 // No intersection found for first part of curve
639 // (CurrentA,InterMedPoint[depth]). 624 // (CurrentA,InterMedPoint[depth]). Go to the second part
640 // 625 //
641 Second_half = true; 626 Second_half = true;
642 } 627 }
643 } // if did_len 628 } // if did_len
644 629
645 if( (Second_half)&&(depth!=0) ) 630 if( (Second_half)&&(depth!=0) )
646 { 631 {
647 // Second part of curve (InterMed[dept 632 // Second part of curve (InterMed[depth],Intermed[depth-1]) )
648 // On the depth-1 level normally we ar 633 // On the depth-1 level normally we are on the 'second_half'
649 634
650 Second_half = true; 635 Second_half = true;
651 636
652 // Find new trial intersection point 637 // Find new trial intersection point needed at start of the loop
653 // 638 //
654 SubStart_PointVelocity = *ptrInterMedF 639 SubStart_PointVelocity = *ptrInterMedFT[depth];
655 CurrentA_PointVelocity = *ptrInterMedF 640 CurrentA_PointVelocity = *ptrInterMedFT[depth];
656 CurrentB_PointVelocity = *ptrInterMedF 641 CurrentB_PointVelocity = *ptrInterMedFT[depth-1];
657 // Ensure that the new endpoints are 642 // Ensure that the new endpoints are not further apart in space
658 // than on the curve due to different 643 // than on the curve due to different errors in the integration
659 // 644 //
660 G4double linDistSq, curveDist; 645 G4double linDistSq, curveDist;
661 linDistSq = ( CurrentB_PointVelocity.G 646 linDistSq = ( CurrentB_PointVelocity.GetPosition()
662 - CurrentA_PointVelocity.G 647 - CurrentA_PointVelocity.GetPosition() ).mag2();
663 curveDist = CurrentB_PointVelocity.Get 648 curveDist = CurrentB_PointVelocity.GetCurveLength()
664 - CurrentA_PointVelocity.G 649 - CurrentA_PointVelocity.GetCurveLength();
665 if( curveDist*curveDist*(1+2*GetEpsilo 650 if( curveDist*curveDist*(1+2*GetEpsilonStepFor() ) < linDistSq )
666 { 651 {
667 // Re-integrate to obtain a new B 652 // Re-integrate to obtain a new B
668 // 653 //
669 G4FieldTrack newEndPointFT = << 654 G4FieldTrack newEndPointFT=
670 ReEstimateEndpoint( CurrentA 655 ReEstimateEndpoint( CurrentA_PointVelocity,
671 CurrentB 656 CurrentB_PointVelocity,
672 linDistS 657 linDistSq, // to avoid recalculation
673 curveDis 658 curveDist );
674 G4FieldTrack oldPointVelB = CurrentB 659 G4FieldTrack oldPointVelB = CurrentB_PointVelocity;
675 CurrentB_PointVelocity = newEndPoint 660 CurrentB_PointVelocity = newEndPointFT;
676 if ( depth==1 ) << 661 if (depth==1)
677 { 662 {
678 recalculatedEndPoint = true; 663 recalculatedEndPoint = true;
679 IntersectedOrRecalculatedFT = newE 664 IntersectedOrRecalculatedFT = newEndPointFT;
680 // So that we can return it, if it 665 // So that we can return it, if it is the endpoint!
681 } 666 }
682 } 667 }
683 668
684 669
685 G4ThreeVector Point_A = CurrentA_Po 670 G4ThreeVector Point_A = CurrentA_PointVelocity.GetPosition();
686 G4ThreeVector SubE_point = CurrentB_Po 671 G4ThreeVector SubE_point = CurrentB_PointVelocity.GetPosition();
687 GetNavigatorFor()->LocateGlobalPointWi 672 GetNavigatorFor()->LocateGlobalPointWithinVolume(Point_A);
688 G4bool Intersects_AB = IntersectChord( 673 G4bool Intersects_AB = IntersectChord(Point_A, SubE_point, NewSafety,
689 674 fPreviousSafety,
690 675 fPreviousSftOrigin,stepLengthAB, PointGe);
691 if( Intersects_AB ) 676 if( Intersects_AB )
692 { 677 {
693 last_AF_intersection = Intersects_AB 678 last_AF_intersection = Intersects_AB;
694 CurrentE_Point = PointGe; 679 CurrentE_Point = PointGe;
695 <<
696 G4bool validNormalAB; <<
697 NormalAtEntry = GetSurfaceNormal( P <<
698 validNormalAtE = validNormalAB; <<
699 } 680 }
700 681
701 depth--; 682 depth--;
702 fin_section_depth[depth]=true; 683 fin_section_depth[depth]=true;
703 } 684 }
704 } // if(!found_aproximate_intersection) 685 } // if(!found_aproximate_intersection)
705 686
706 } while ( ( ! found_approximate_intersection 687 } while ( ( ! found_approximate_intersection )
707 && ( ! there_is_no_intersection ) 688 && ( ! there_is_no_intersection )
708 && ( substep_no <= max_substeps) ) 689 && ( substep_no <= max_substeps) ); // UNTIL found or failed
709 690
710 if( substep_no > max_no_seen ) 691 if( substep_no > max_no_seen )
711 { 692 {
712 max_no_seen = substep_no; 693 max_no_seen = substep_no;
713 #ifdef G4DEBUG_LOCATE_INTERSECTION <<
714 if( max_no_seen > warn_substeps ) 694 if( max_no_seen > warn_substeps )
715 { 695 {
716 trigger_substepno_print = max_no_seen-20 696 trigger_substepno_print = max_no_seen-20; // Want to see last 20 steps
717 } << 697 }
718 #endif <<
719 } 698 }
720 699
721 if( ( substep_no >= max_substeps) 700 if( ( substep_no >= max_substeps)
722 && !there_is_no_intersection 701 && !there_is_no_intersection
723 && !found_approximate_intersection ) 702 && !found_approximate_intersection )
724 { 703 {
725 G4cout << "ERROR - G4BrentLocator::Estimat << 704 G4cerr << "WARNING - G4BrentLocator::EstimateIntersectionPoint()"
726 << " Start and end-point of << 705 << G4endl
>> 706 << " Convergence is requiring too many substeps: "
>> 707 << substep_no << G4endl;
>> 708 G4cerr << " Abandoning effort to intersect. " << G4endl;
>> 709 G4cerr << " Information on start & current step follows in cout."
>> 710 << G4endl;
>> 711 G4cout << "WARNING - G4BrentLocator::EstimateIntersectionPoint()"
>> 712 << G4endl
>> 713 << " Convergence is requiring too many substeps: "
>> 714 << substep_no << G4endl;
>> 715 G4cout << " Found intersection = "
>> 716 << found_approximate_intersection << G4endl
>> 717 << " Intersection exists = "
>> 718 << !there_is_no_intersection << G4endl;
>> 719 G4cout << " Start and Endpoint of Requested Step:" << G4endl;
727 printStatus( CurveStartPointVelocity, Curv 720 printStatus( CurveStartPointVelocity, CurveEndPointVelocity,
728 -1.0, NewSafety, 0); 721 -1.0, NewSafety, 0);
729 G4cout << " Start and end-point of << 722 G4cout << G4endl;
>> 723 G4cout << " 'Bracketing' starting and endpoint of current Sub-Step"
>> 724 << G4endl;
730 printStatus( CurrentA_PointVelocity, Curre 725 printStatus( CurrentA_PointVelocity, CurrentA_PointVelocity,
731 -1.0, NewSafety, substep_no-1 726 -1.0, NewSafety, substep_no-1);
732 printStatus( CurrentA_PointVelocity, Curre 727 printStatus( CurrentA_PointVelocity, CurrentB_PointVelocity,
733 -1.0, NewSafety, substep_no); 728 -1.0, NewSafety, substep_no);
734 std::ostringstream message; << 729 G4cout << G4endl;
735 message << "Too many substeps!" << G4endl << 730 G4cout.precision( 10 );
736 << " Convergence is requi <<
737 << substep_no << G4endl <<
738 << " Abandoning effort to <<
739 << " Found intersection = <<
740 << found_approximate_intersection <<
741 << " Intersection exists <<
742 << !there_is_no_intersection << G4 <<
743 oldprc = G4cout.precision( 10 ); <<
744 G4double done_len = CurrentA_PointVelocity 731 G4double done_len = CurrentA_PointVelocity.GetCurveLength();
745 G4double full_len = CurveEndPointVelocity. 732 G4double full_len = CurveEndPointVelocity.GetCurveLength();
746 message << " Undertaken only length << 733 G4cout << "ERROR - G4BrentLocator::EstimateIntersectionPoint()"
747 << " out of " << full_len << " req << 734 << G4endl
748 << " Remaining length = " < << 735 << " Undertaken only length: " << done_len
749 G4cout.precision( oldprc ); << 736 << " out of " << full_len << " required." << G4endl;
>> 737 G4cout << " Remaining length = " << full_len - done_len << G4endl;
750 738
751 G4Exception("G4BrentLocator::EstimateInter 739 G4Exception("G4BrentLocator::EstimateIntersectionPoint()",
752 "GeomNav0003", FatalException, << 740 "UnableToLocateIntersection", FatalException,
>> 741 "Too many substeps while trying to locate intersection.");
753 } 742 }
754 else if( substep_no >= warn_substeps ) 743 else if( substep_no >= warn_substeps )
755 { 744 {
756 oldprc = G4cout.precision( 10 ); << 745 G4int oldprc= G4cout.precision( 10 );
757 std::ostringstream message; << 746 G4cout << "WARNING - G4BrentLocator::EstimateIntersectionPoint()"
758 message << "Many substeps while trying to << 747 << G4endl
759 << G4endl << 748 << " Undertaken length: "
760 << " Undertaken length: " << 749 << CurrentB_PointVelocity.GetCurveLength();
761 << CurrentB_PointVelocity.GetCurve << 750 G4cout << " - Needed: " << substep_no << " substeps." << G4endl
762 << " - Needed: " << substep_no << << 751 << " Warning level = " << warn_substeps
763 << " Warning level = " << << 752 << " and maximum substeps = " << max_substeps << G4endl;
764 << " and maximum substeps = " << m <<
765 G4Exception("G4BrentLocator::EstimateInter 753 G4Exception("G4BrentLocator::EstimateIntersectionPoint()",
766 "GeomNav1002", JustWarning, me << 754 "DifficultyToLocateIntersection", JustWarning,
>> 755 "Many substeps while trying to locate intersection.");
767 G4cout.precision( oldprc ); 756 G4cout.precision( oldprc );
768 } 757 }
769 return !there_is_no_intersection; // Succe 758 return !there_is_no_intersection; // Success or failure
770 } 759 }
771 760