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History @ 1330

Last change on this file since 1330 was 1315, checked in by garnier, 14 years ago
update geant4-09-04-beta-cand-01 interfaces-V09-03-09 vis-V09-03-08
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1	$Id: History,v 1.139 2010/03/08 13:57:48 gcosmo Exp $
2	-------------------------------------------------------------------
3
4	=========================================================
5	Geant4 - an Object-Oriented Toolkit for Simulation in HEP
6	=========================================================
7
8	Category History file
9	---------------------
10	This file should be used by G4 developers and category coordinators
11	to briefly summarize all major modifications introduced in the code
12	and keep track of all category-tags.
13	It DOES NOT substitute the CVS log-message one should put at every
14	committal in the CVS repository !
15
16	----------------------------------------------------------
17	* Reverse chronological order (last date on top), please *
18	----------------------------------------------------------
19
20	March 8th, 2010 - G.Cosmo (geomnav-V09-03-00)
21	-------------------------
22	- Avoid unnecessary creation of string for debug purposes in G4PropagatorInField.
23	Courtesy of P.Elmer (CMS).
24	- Some printout formatting...
25
26	December 11th, 2009 - J.Apostolakis (geomnav-V09-02-11)
27	-----------------------------------
28	- Implemented field by region in G4PropagatorInField, with extra checking of
29	logical volume.
30
31	November 30th, 2009 - J.Apostolakis (geomnav-V09-02-10)
32	-----------------------------------
33	- Fixes in G4VIntersectionLocator:
34	* Fixed problem in ReEstimateEndPoint() behaviour for very small steps.
35	* Corrected constructor to ensure that it initialises all data members.
36	* Labelled the methods (in header) to make noticable those that must change
37	at every step (attributes: 'ChordFinder', 'EpsilonStep', 'Navigator').
38
39	Nov 23rd, 2009 - J.Apostolakis
40	------------------------------
41	- Fixes in G4PropagatorInField.cc:
42	* Revised condition for flagging ZeroStep to avoid fake triggering. Small
43	proposed steps (from Physics) could trigger the previous simple condition
44	for Tiny/Zero Problem steps.
45
46	November 12th, 2009 - J.Apostolakis (geomnav-V09-02-09)
47	-----------------------------------
48	- Cleanup of minor methods in G4PropagatorInField:
49	* Added new method RefreshIntersectionLocator() to update the state of locator.
50	It is used to synchronise with G4IntersectionLocator.
51	* Deleted long obsolete methods: SetAccuraciesWithDeltaOneStep(),
52	SetDeltaIntersection() and SetDeltaOneStep().
53	* Revised implementation to avoid using the older methods GetDeltaIntersection()
54	and GetDeltaOneStep().
55
56	November 12th, 2009 - J.Apostolakis (geomnav-V09-02-08)
57	-----------------------------------
58	- Refined G4PropagatorInField.cc:
59	* Changed parameters for treating consecutive tiny/zero steps:
60	- the value of default decrease factor to 0.25 (from 0.1),
61	- the value is not used when the step size falls below a certain thresholds
62	This threshold is changed. It is expressed as a multiple of fZeroStepThreshold
63	instead of kCarTolerance. This, since the thresholds were meant to refer to
64	the ZeroStepThreshold (it was kCarTolerance), and the values were now much
65	larger than 'ZeroStepThreshold'.
66	- The value given to the decrease factor after the first such thresholds is
67	changed to 0.35 instead of 0.25, 0.5.
68	* Improved printing of Diagnostic message.
69
70	November 3rd, 2009 - J.Apostolakis (geomnav-V09-02-07)
71	----------------------------------
72	- Refined G4PropagatorInField.cc:
73	* Added new member fZeroStepThreshold, to enable tuning of threshold for
74	Tiny/Zero steps.
75	* Changed default value from 0.5 * kCarTolerance
76	to max (100,000 * kCarTolerance, 0.1 * micron )
77	* This is first revision to address problem seen at boundary of volumes
78	(Reports of ATLAS).
79
80	June 2nd, 2009 - J.Apostolakis (geomnav-V09-02-06)
81	------------------------------
82	- Fix in G4PropagatorInField::SetNavigator
83	* Forward new Navigator to IntersectionLocator.
84
85	May 20th, 2009 - P.Arce (geomnav-V09-02-05)
86	-----------------------
87	- Added method BuildContainerSolid() taking a solid as argument to
88	G4PhantomParameterisation. Added protection to GetMaterialIndex()
89	for zero index.
90
91	May 18th, 2009 - T.Nikitina (geomnav-V09-02-04)
92	---------------------------
93	- Enhanced algorithm for 'FB_intersects' in order to speedup BrentLocator.
94	- Fix in the usage of the geometrical tolerance in G4VIntersectionLocator
95	in method AdjustementOfFoundIntersection().
96
97	May 13th, 2009 - J.Apostolakis (geomnav-V09-02-03)
98	------------------------------
99	- Fix in G4PathFinder: A geometry is at a boundary if its step is within
100	tolerance of the minimum step for any geometry.
101
102	May 5th, 2009 - T.Nikitina (geomnav-V09-02-02)
103	--------------------------
104	- Fix in G4Navigator::ComputeStep() for the computation of rotation of the
105	'LocalExitNormal' in cases when DistanceToOut() returns non-valid normal
106	for optical photons in rotated solids. Addresses problem report #1059.
107
108	February 26th, 2009 - T.Nikitina (geomnav-V09-02-01)
109	--------------------------------
110	- Fixed problem in G4BrentLocator::EstimateIntersectionPoint() responsible
111	for rare cases of negative steps.
112
113	January 27th, 2009 - G.Cosmo (geomnav-V09-02-00)
114	----------------------------
115	- Added G4RegularNavigationHelper class, used by G4RegularNavigation for
116	counting the number of step lengths in each voxel of the regular structure
117	(by P.Arce).
118	- Some code cleanup...
119
120	December 11th, 2008 - T.Nikitina (geomnav-V09-01-10)
121	--------------------------------
122	- Reinstated G4MultiLevelLocator as the default locator to allow for proper
123	tuning of parameters in propagation in field and avoid CPU penalty currently
124	induced by default parameters.
125	- Corrected text in exceptions in locators classes.
126
127	November 14th, 2008 - T.Nikitina, J.Apostolakis (geomnav-V09-01-09)
128	-----------------------------------------------
129	- Introduced first implementation of new optional method in locator classes
130	AdjustementOfFoundIntersection() using surface-normal of the intersecting
131	solid to boost accuracy. Added the optional call to the new method in each
132	concrete locator.
133	- Removed unnecessary accessors for Brent locator in G4PropagatorInField.
134	- G4VoxelNavigation: implemented additional check when running in "check"
135	mode; if it is on the surface, ensure that it can move on next step;
136	either DistanceToIn(p,v) or DistanceToOut(p,v) should return a finite
137	value greater than the tolerance.
138
139	November 10th, 2008 - G.Cosmo (geomnav-V09-01-08)
140	-----------------------------
141	- G4PathFinder: cleared unecessary calls to ComputeSafety() in ReLocate().
142
143	October 28th, 2008 - T.Nikitina (geomnav-V09-01-07)
144	-------------------------------
145	- Moved method LocateIntersectionPoint() in G4PropagatorInField to a separate
146	class G4VIntersectionLocator, now allowing to use different location
147	algorithms: Brent, MultiLevel, Simple.
148	- New classes: G4VIntersectionLocator, G4SimpleLocator, G4BrentLocator and
149	G4MultiLevelLocator.
150	- Coworks with tag "field-V09-01-03".
151
152	October 10th, 2008 - G.Cosmo (geomnav-V09-01-06)
153	----------------------------
154	- Introduced optional Boolean argument in G4Navigator::ComputeSafety() to
155	allow for computation of safety without modifying the state restoring of
156	the navigator.
157	- Modified accordingly the following classes, for calls to ComputeSafety():
158	G4SafetyHelper, G4PathFinder (now calling ComputeSafety() with TRUE
159	argument to preserve navigator's state), G4MultiNavigator and
160	G4ErrorPropagationNavigator.
161
162	May 5th, 2008 - T.Nikitina (geomnav-V09-01-05)
163	--------------------------
164	- Added Brent method for LocateIntersectionPoint() in G4PropagatorInField.
165	The Brent method is now used as default and can be switched off through
166	call to the proper accessor function SetBrentMethod().
167	- Requires related update to G4ChordFinder in geometry/magneticfield module
168	included in tag "field-V09-01-02".
169
170	April 29th, 2008 - M.Asai (geomnav-V09-01-04)
171	-------------------------
172	- G4PathFinder: commented out warning and exception in ComputeStep()
173	for step smaller than minimum threshold.
174
175	April 28th, 2008 - G.Cosmo (geomnav-V09-01-03)
176	--------------------------
177	- Corrected condition for wrong evaluation order introduced in the
178	previous tag.
179
180	March 13th, 2008 - G.Cosmo (geomnav-V09-01-02)
181	--------------------------
182	- Cleared compilation warnings in G4ReplicaNavigation on gcc-4.3.0 for
183	ambiguous use of parentheses in condition statements.
184
185	January 24th, 2008 - T.Nikitina (geomnav-V09-01-01)
186	-------------------------------
187	- G4PropagatorInField: changed condition for 'ReEstimationEndPoint'
188	in order to better handle very strict parameters of propagation.
189	Also added more verbosity in case of error for negative step.
190	Fixes rare problem observed in production by ATLAS.
191
192	January 22nd, 2008 - P.Arce (geomnav-V09-01-00)
193	---------------------------
194	- G4PhantomParameterisation:
195	o Bug fix in GetReplicaNo() to catch overflows in X and Y.
196	(on suggestion by S.Stute)
197	o Made CheckVoxelsFillContainer() visible in public interface.
198
199	November 16th, 2007 - G.Cosmo (geomnav-V09-00-12)
200	-----------------------------
201	- Cleared compilation warnings for shadowing of variables in classes
202	within the module.
203
204	November 14th, 2007 - G.Cosmo (geomnav-V09-00-11)
205	-----------------------------
206	- Reintroduced artificial push in G4ReplicaNavigation::ComputeStep().
207	Further investigation and eventually reimplementation of LevelLocate()
208	required to take into account point and direction ...
209
210	November 14th, 2007 - G.Cosmo (geomnav-V09-00-10)
211	-----------------------------
212	- Trial to remove artificial push in G4ReplicaNavigation::ComputeStep().
213	- Some minor cleanup.
214
215	November 9th, 2007 - J.Apostolakis (geomnav-V09-00-09)
216	----------------------------------
217	- G4SafetyHelper: Improved ComputeSafety() not to call G4Navigator
218	if exactly on safety 'center'.
219	- G4PathFinder: correction to debug code under #ifdef G4DEBUG_NAVIGATION.
220
221	November 9th, 2007 - G.Cosmo (geomnav-V09-00-08)
222	----------------------------
223	- Fix in G4ReplicaNavigation::DistanceToOut() for exact classification of
224	the linear step for Cartesian case.
225	- Made IdentifyAndPlaceSolid() method inlined in G4ParameterisedNavigation.
226	- Minor cosmetics and cleanup.
227
228	November 6th, 2007 - P.Arce (geomnav-V09-00-07)
229	---------------------------
230	- Optimisation in G4RegularNavigation: use voxelBox->DistanceToOut() instead
231	of ComputeStep() in ComputeStepSkippingEqualMaterials().
232	- Some cleanup and proper formatting of error/warning messages.
233
234	November 2nd, 2007 - J.Apostolakis (geomnav-V09-00-06)
235	----------------------------------
236	- Merging fixes in "geomnav-V09-00-03b" and "geomnav-V09-00-03c" on top
237	of tag "geomnav-V09-00-05".
238
239	November 2nd, 2007 - J.Apostolakis (geomnav-V09-00-03c)
240	----------------------------------
241	- G4PathFinder:
242	o Added setting of 'fNoGeometriesLimiting' in DoNextCurvedStep().
243	o Check to verify that 'fNoGeometriesLimiting' is set by DoNext*Step methods.
244	o Revised data type of 'fNoGeometriesLimiting' to be a int, so that < 0
245	shows 'unset'.
246	- G4PropagatorInField:
247	o Fixes for compilation of code under G4DEBUG_FIELD (problem report #982).
248	o Added extra check of method LocateIntersectionPoint() arguments.
249	- Tag based on "geomnav-V09-00-03b".
250
251	October 29th, 2007 - J.Apostolakis (geomnav-V09-00-03b)
252	----------------------------------
253	- G4PathFinder: first fix for problem of another process shortening steps
254	(between calls to ComputeStep by different processes in same step.)
255	I.e. First call to ComputeStep (geom 1) has proposed Step = 3.0 cm
256	Next call to ComputeStep (geom 2) has proposed Step = 1.0 cm
257	(e.g. Multiple Scattering)
258	- Tag based on "geomnav-V09-00-03a".
259
260	October 24th, 2007 - J.Apostolakis (geomnav-V09-00-05)
261	----------------------------------
262	- Merging fixes introduced in "geomnav-V09-00-03a" on top of
263	"geomnav-V09-00-04".
264
265	October 24th, 2007 - J.Apostolakis (geomnav-V09-00-03a)
266	----------------------------------
267	- G4PathFinder: fix to now set 'fNoGeometriesLimiting' in DoNextLinearStep()
268	when WhichLimited() is not called, i.e. in case of one navigator
269	optimisation.
270	- Tag based on "geomnav-V09-00-03".
271
272	October 18th, 2007 - G.Cosmo (geomnav-V09-00-04)
273	----------------------------
274	- Added new specific navigation for regular structures and phantoms.
275	New classes: G4RegularNavigation, G4PhantomParameterisation (by P.Arce).
276	Added cases to G4Navigator. Added dependency on "materials" module.
277
278	October 12th, 2007 - J.Apostolakis (geomnav-V09-00-03)
279	----------------------------------
280	- G4PathFinder: added new methods GetNumberGeometriesLimitingStep()
281	and GetMinimumStep() needed by G4CoupledTransportation to see whether
282	to relocate.
283
284	September 25th, 2007 - G.Cosmo (geomnav-V09-00-02)
285	------------------------------
286	- Some code cleanup in G4PathFinder. Switch off additional optimisation
287	for safety in method DoNextLinearStep().
288	- Set 'fRecomputeFactor' in G4SafetyHelper to 0.0, to switch off internal
289	optimisation and allow for reproducibility of steps (A.Howard).
290
291	July 12th, 2007 - J.Apostolakis (geomnav-V09-00-01)
292	-------------------------------
293	- Restores fixes/improvements of geomnav-V08-03-07
294	- G4PathFinder: includes fix for result of ObtainSafety(), used in
295	CoupledTransportation.
296
297	July 12th, 2007 - J.Apostolakis (geomnav-V09-00-00)
298	-------------------------------
299	- G4PathFinder:
300	o Include correction to signature of method PrepareNewTrack().
301	(This was done on a branch for this class in order to keep only
302	development of geomnav-V08-03-06)
303	- G4PropagatorInField:
304	o Included revisions and fixes for G4PropagatorInField of June 8th.
305	- This tag is based on "geomnav-V08-03-06" and does NOT include the
306	revisions of "geomnav-V08-03-07".
307
308	July 5th, 2007 - G.Cosmo
309	------------------------
310	- G4PathFinder:
311	o Corrected signature to method PrepareNewTrack().
312	Resolves linking problems detected on SUN-CC platform.
313	- Changes included in tag "geomnav-V08-03-02c", included in relase 9.0.p01.
314
315	June 8th, 2007 - T.Nikitina
316	---------------------------
317	- G4PropagatorInField:
318	o Put in the constructor creation of array of FieldTracks used in
319	LocateInterSectionPoint().
320	o Change in ReEstimateNewPoint() in order to handle cases with zero step
321	caused by diffCurve=0.
322	o In case of proposed step less than tolerance, now return 'kInfinity'
323	as per convention of geometry instead of 'DBL_MAX'.
324	(by J.Apostolakis, May 18th 2007)
325	- Changes included in tag "geomnav-V08-03-02b", included in release 9.0.
326
327	June 5th, 2007 - J.Apostolakis (geomnav-V08-03-07)
328	------------------------------
329	- G4PathFinder:
330	o New method to return the safety sphere last calculated for
331	a PreStep point (it could be a previous one - due to optimasation).
332	>> If last step(s) were smaller than safety, then for a linear
333	track (no field or no charge) Navigator's ComputeSafety is not
334	called. The older PreStep (previous step or some steps back
335	in case of many small steps) is stored for this - and provided.
336	o ComputeStep() still returns current PreStep point's safety (must).
337	o Revisions are to make this (used by CoupledTransportation) more
338	compatible with the old direct use of G4Navigator by G4Transportation.
339
340	May 29th, 2007 - J.Apostolakis (geomnav-V08-03-06)
341	------------------------------
342	- G4Navigator
343	o Fixed ComputeSafety: wrong coordinates used (last tag only).
344	For certainty reinstated LocateGlobalPointWithinVolume (for now).
345	o Corrected calculation of fStepEndPoint (in ComputeStep)
346	for case of step not limited by geometry
347	- G4PathFinder
348	o PrepareNewTrack: calls to re-initialise SafetyHelper (reset safety)
349	o ReLocate: Corrected check of move (avoid one side effect on stored safety)
350	--> ComputeSafety still results individual navigators' values.
351
352	May 24th, 2007 - J.Apostolakis (geomnav-V08-03-05)
353	------------------------------
354	- G4PathFinder: 1 correction and 2 optimisations:
355	o PrepareNewTrack() clear safety - to avoid potential problems in overlaps.
356	o DoNextLinearStep() only calls ComputeStep() for a navigator whose safety
357	greater than the step.
358	o DoNextCurvedStep(), if there's one geometry, no longer calls
359	ComputeSafety() at start.
360	- G4Navigator ComputeSafety:
361	o Corrected it to address use at non-endpoint
362	o Replaced call to LocateGlobalPointWithinVolume() with calls to
363	sub-navigators.
364
365	May 21st, 2007 - G.Cosmo
366	------------------------
367	- Made 'fVerbose' protected in G4Navigator, reused in G4MultipleNavigator.
368	- Some cleanup in G4MultipleNavigator implementation.
369	- Make G4PathFinder singleton definition canonical.
370	- Added method CheckPointExiting() in G4AuxiliaryNavServices utility
371	class (by P.Arce).
372
373	May 19th, 2007 - J.Apostolakis (geomnav-V08-03-04)
374	------------------------------
375	- Corrections and additions in G4PathFinder:
376	1) Added calculation of start-point safety in DoNextCurvedStep
377	2) Corrected GetCurrentSafety() - uses mininum of 1)
378	3) Added method to obtain safety of one navigator (after call to all).
379	4) Deleted obsolete data member 'fMinSafety'.
380	5) If only one geometry, do not call WhichLimited in DoNextLinearStep (optimisation)
381	6) ComputeSafety: save the values of isotropic safety for each navigator
382
383	May 18th, 2007 - A.Howard (geomnav-V08-03-03)
384	------------------------
385	- Fixed return value for G4PathFinder::ComputeStep in case of
386	step smaller than tolerance (now kInfinity): fixes one PathFinder issue (JA).
387	- Added compiler flags for verbosity in G4PathFinder.cc
388	- Added compiler flags for verbosity in G4MultiNavigator.cc
389
390	May 18th, 2007 - G.Cosmo (geomnav-V08-03-02)
391	------------------------
392	- Use kAngTolerance and kRadTolerance from G4GeometryTolerance class.
393	- Coworks with tag "global-V08-03-03".
394
395	May 16th, 2007 - G.Cosmo (geomnav-V08-03-01)
396	------------------------
397	- Introduced new class G4ErrorPropagationNavigator, a specialised navigator
398	for performing double navigation in the detector geometry and on the
399	target surface for error propagation (by P.Arce).
400	- Fixed bug in G4GeomTestSegment in case of TestPoint on the surface,
401	reducing cases of reported spurious overlaps.
402	- Coworks with tag "global-V08-03-02".
403
404	May 16th, 2007 - J.Apostolakis (geomnav-V08-03-00a)
405	------------------------------
406	- Moved to G4PathFinder version without extra prints
407
408	April 26th, 2007 - G.Cosmo (geomnav-V08-03-00)
409	--------------------------
410	- Use call to G4GeometryTolerance instead of kCarTolerance where needed.
411	- Revised data members in G4SafetyHelper to conform to convention.
412	- Requires tag "global-V08-03-00" and related tag set.
413
414	April 26th, 2007 - T.Nikitina (geomnav-V08-02-03)
415	-----------------------------
416	- Fixed case of out of range access in G4GeomTestSegment responsible for
417	crashes observed when recursive-grid test for overlaps was run.
418	Addressing problem report #784.
419
420	April 20th, 2007 - G.Cosmo (geomnav-V08-02-02)
421	--------------------------
422	- Some cleanup and minor cosmetics ...
423
424	April 12st, 2007 - V.Ivanchenko
425	-------------------------------
426	- G4SafetyHelper become a unique class, which can be accessed via
427	G4TransporationManager. Depending on type of navigation (single
428	world or multiple navigation) it uses mass navigator or G4PathFinder.
429	All calls from EM processes to geometry are provided by G4SafetyHelper.
430	- G4TransportationManager: added G4SafetyHelper.
431	- G4PathFinder: initialisation of G4SafetyHelper.
432	- Tagged "geomnav-V08-02-02-beta2".
433
434	March 31st, 2007 - J. Apostolakis
435	---------------------------------
436	- G4Navigator:
437	o New method CheckNextStep() makes a trial step, without
438	changing the state of the Navigator (to be verified).
439	It is a variant of ComputeStep, whose signature it shares.
440	- Tagged "geomnav-V08-02-02-beta1".
441
442	February 13th, 2007 - J.Apostolakis
443	-----------------------------------
444	- G4Navigator:
445	o Improvement for creating touchable history when located outside world.
446	Retain whether last point was located outside, and if so call default
447	TouchableHistory constructor (that initialised world to null).
448	NOTE: testing found problems with SteppingManager::SetInitialStep()
449	as the Vertex physical volume was not set. Protection is potentially
450	required, or bigger issue to be resolved.
451	Currently, changes in G4Navigator.hh,cc are safe, but the fix in .icc is
452	temporarly suspended and NOT included.
453	- Attempted fix created Dec 7th, 2006
454
455	February 13th, 2007 - J.Apostolakis (geomnav-V08-02-01)
456	-----------------------------------
457	- G4PropagatorInField:
458	o Implemented ClearPropagatorState() to clear all the track-dependent
459	state (incl. safety, zero-steps, loop flag ...).
460	** Calling this is mandatory for each new track because in the case of
461	geometry overlaps, the safety can be easily inconsistent (and/or
462	incorrect) otherwise
463	** Must be called from G4Transportation (or alternatives) !!
464	- Fix created Jan 25th, 2007
465
466	January 31st, 2007 - G.Cosmo (geomnav-V08-02-00)
467	----------------------------
468	- G4Navigator: forcing call to CheckOverlaps() on the current volume
469	before event abortion for cases of stuck tracks.
470	- Requires tag "geommng-V08-02-00".
471
472	November 23rd, 2006 - J.Apostolakis (geomnav-V08-01-08)
473	-----------------------------------
474	- G4PathFinder:
475	o Fix when report a problem only if move > safety (additional check).
476	o Revised condition for extra checking against safety.
477	o Many small and cosmetic changes in debug printing.
478
479	November 18th, 2006 - J.Apostolakis (geomnav-V08-01-07)
480	-----------------------------------
481	- G4PathFinder:
482	o Fix for problem when step is fully taken.
483	Note: this occurs due to optimisation in PiF that avoids calling
484	G4(Multi)Navigator!!
485	o Function LimitedString( ELimited lim ) enables printing this enum
486	o Improved printing in IntersectChord. Deleted/simplified few prints in
487	ComputeStep().
488	- G4MultiNavigator: cleanup, cosmetics
489
490	November 13th, 2006 - G.Cosmo (geomnav-V08-01-06)
491	-----------------------------
492	- Fixed compilation warnings and some cleanup ...
493
494	November 11th, 2006 - J.Apostolakis (geomnav-V08-01-05)
495	-----------------------------------
496	- G4PathFinder improvements for parallel Navigation
497	o ComputeStep method signature extended to add volume
498	o Use G4MultiNavigator for tracking in field.
499	- G4MultiNavigator:
500	o Several fixes, primarily for taking care of condition of
501	geometry limited step.
502
503	November 11th, 2006 - J.Apostolakis (geomnav-V08-01-04)
504	-----------------------------------
505	- G4PropagatorInField:
506	o Refined fix in LocateIntersectionPoint(), to subdivide
507	in case it cannot find intersection point quickly (T.Nikitina).
508	Second version, with several levels of cutting.
509	o NOTE: Special tags made (later) not including the Developments in
510	G4TransportationManager, G4PathFinder, G4SafetyHelper for parallel
511	navigation. i.e. - based on tag "geomnav-V08-01-03".
512
513	November 11th, 2006 - J.Apostolakis
514	-----------------------------------
515	- Created G4MultiNavigator class and utilised it from G4PathFinder
516	to implement curved trajectory parallel navigation.
517
518	November 10th, 2006 - J.Apostolakis (geomnav-V08-01-03)
519	-----------------------------------
520	- G4PropagatorInField:
521	o Fix in LocateIntersectionPoint(), to subdivide in case it cannot find
522	intersection point quickly (T.Nikitina).
523	First version, only one level of cutting
524	o NOTE: Special tags made (later) not including the Developments in
525	G4TransportationManager, G4PathFinder, G4SafetyHelper for parallel
526	navigation. i.e. - based on tag "geomnav-V08-01-02".
527
528	November 9th, 2006 - J.Apostolakis
529	-----------------------------------
530	- G4SafetyHelper:
531	o Changed default value of 'fUseParallelGeometries' to 'false'.
532	This is the default, except when using parallel geometries.
533	Value 'true' will become the default.
534
535	November 4th, 2006 - M.Asai
536	---------------------------
537	- G4TransportationManager:
538	o added new method SetWorldForTracking() to enable change of world from
539	the RunManager.
540
541	October 31st, 2006 - J.Apostolakis
542	----------------------------------
543	- G4SafetyHelper
544	o Added new class variable 'fUseParallelGeometries', to enable
545	it to work call G4Navigator of Mass geometry directly, in
546	the case of single geometry (when G4PathFinder is disabled).
547	o Default value is currently 'true' --> for parallel navigation development.
548	- G4PathFinder
549	o Improved the code that checks within relocation whether position
550	is proposed to be moved outside safety sphere from endpoint.
551
552	October 26th, 2006 - G.Cosmo (geomnav-V08-01-02)
553	----------------------------
554	- G4Navigator:
555	o Added inline methods EnteredDaughterVolume() and ExitedMotherVolume() to
556	allow for verification of a point entering a daughter volume or exiting
557	the mother volume.
558	o Made LocateGlobalPointAndSetup() method virtual. Moved to non virtual
559	and inline LocateGlobalPointAndUpdateTouchableHandle() method.
560	o Moved 'fHistory' data member to protected to aloow for more complete
561	subclassing.
562	o Minor cosmetics to recently introduced printout diagnostics in
563	ComputeSafety() method.
564	- G4TransportationManager:
565	o Added methods to access the list of the registered worlds.
566	- NOTE: this tag does NOT include the recent developments introduced for
567	G4PathFinder. It resumes from tag "geomnav-V08-00-01"; anything else
568	introduced after it, except for changes in G4Navigator, is NOT included !
569
570	October 25th, 2006 - J.Apostolakis
571	----------------------------------
572	- G4PathFinder: fixed initialisation of cached value for the
573	G4TransportationManager to cope with singletons.
574
575	October 16th, 2006 - J.Apostolakis (geomnav-V08-01-01)
576	----------------------------------
577	- G4Navigator: moved debug printing behind fVerbose conditions
578
579	October 12th, 2006 - J.Apostolakis (geomnav-V08-01-00)
580	----------------------------------
581	- New class G4SafetyHelper to aid multiple scattering inn
582	determining the correct Mass geometry step (via PathFinder)
583	and all-geometry safety.
584	- Several revisions, fixes to G4PathFinder.
585
586	June 8th, 2006 - J.Apostolakis (geomnav-V08-00-06)
587	------------------------------
588	- G4PathFinder:
589	o New method 'ComputeSafety' to compute safety at endpoint of last step.
590
591	June 2nd, 2006 - J.Apostolakis (geomnav-V08-00-05)
592	------------------------------
593	- G4PathFinder:
594	o New method ReLocate() for non-Transportation classes to call when moving
595	the endpoint of a particle. Uses LocateGlobalPointWithinVolume() method
596	of the navigators.
597	o Small fixes and protection of debug printing with Verbose flag.
598	o Default verbose level is now 0.
599
600	May 28th, 2006 - J.Apostolakis (geomnav-V08-00-04)
601	------------------------------
602	- G4PathFinder:
603	o Check whether a process shifted the position since the last step.
604	o Corrected checking for 'Unique', i.e. one process limiting step.
605	o Revised printing (more information, some protected by verbose flag).
606
607	May 27th, 2006 - J.Apostolakis (geomnav-V08-00-03)
608	------------------------------
609	- G4PathFinder revised significantly:
610	o Workaround for problem of CreateHistory() when outside world.
611	o Revised for new counting of Navigator IDs (M.Asai).
612	o Added MovePoint() method that signals if it moved.
613	o Added state to cope with cases where a full step is taken,
614	i.e. to cope with steps that return kInfinity:
615	New state:
616	RelocatedPoint - to show if it is moved;
617	TrueMinStep - finite whereas reported can be kInfinity.
618	and to aid in clarifying the state of the (singleton) object:
619	LastStepNo - already kept in one method (static), now exposed;
620	CurrentStepNo - mostly for debugging and printing out.
621	o Small improvements in tests.
622
623	May 23rd, 2006 - J.Apostolakis (geomnav-V08-00-02)
624	------------------------------
625	- Added new prototype class G4PathFinder to coupled navigation
626	in parallel geometries.
627
628	May 22nd, 2006 - G.Cosmo (geomnav-V08-00-01)
629	------------------------
630	- Extended G4TransportationManager to handle multiple navigators.
631	Preserved interface for navigation in mass/tracking geometry.
632	- Added activation flag to G4Navigator and related accessor methods.
633
634	Feb 8th, 2006 - J.Apostolakis (geomnav-V08-00-00)
635	-----------------------------
636	- Addressing problem with convergence in LocateIntersectionPoint()
637	of G4PropagatorInField (problem identified by Atlas, observed when
638	requesting high precision, i.e. small values of eps_min/max, delta_one_step,
639	due e.g. to need for small delta_intersection):
640	o First solution by increasing maximum iterations (from 100 to 10,000).
641	o Until correct information can be returned, an Exception is thrown
642	in case of too many iterations.
643	o Warn in case over 1000 iterations, to let user see difficulty.
644	- This fix is an interim solution, in lieu of improving the algorithm
645	for location (or returning correct incomplete progress).
646
647	Nov 24th, 2005 - J.Apostolakis (geomnav-V07-01-02)
648	------------------------------
649	- Revised G4ParameterisedNavigation, to use new interface for
650	ComputeMaterial(). Now no longer needing 'Physical Touchable'.
651
652	Sep 19th, 2005 - G.Cosmo (geomnav-V07-01-01)
653	------------------------
654	- G4DrawVoxels: removed unnecessary 'panic' message in ComputeVoxelPolyhedra()
655	and some code cleanup.
656
657	Jul 25th, 2005 - G.Cosmo (geomnav-V07-01-00)
658	------------------------
659	- Some cleanup and cosmetic changes for Software Reference Manual.
660
661	Jun 14th, 2005 - J.Apostolakis (geomnav-V07-00-00)
662	------------------------------
663	- Added ability to use Nested Parameterisations to Parameterised Navigation
664	Coworks with tag "geomvol-V07-00-01".
665
666	Dec 2nd, 2004 - G.Cosmo (geomnav-V06-02-08)
667	-----------------------
668	- Implemented migration to <cmath> for standard mathematical functions.
669
670	Nov 24th, 2004 - G.Cosmo (geomnav-V06-02-07)
671	------------------------
672	- Fix in G4ReplicaNavigation::DistanceToOutPhi() for the case of phi
673	sections on convex surfaces. Fixes problem report #651.
674
675	Nov 19th, 2004 - J.Apostolakis (geomnav-V06-02-06)
676	------------------------------
677	- New access method in G4Navigator for SeverityOfZeroStepping().
678
679	Nov 17th, 2004 - G.Cosmo (geomnav-V06-02-05)
680	------------------------
681	- Allow consecutive corrections for stuck tracks in G4Navigator::ComputeStep()
682	up to 10 times before aborting the event.
683
684	Sep 28th, 2004 - G.Cosmo (geomnav-V06-02-04)
685	------------------------
686	- Invoke G4LogicalVolume::UpdateMaterial() instead of SetMaterial() for
687	parameterised navigation in G4Navigator and G4ParameterisedNavigation
688	(M.Asai).
689	- Coworks with tag "geommng-V06-02-02".
690
691	Sep 13th, 2004 - G.Cosmo (geomnav-V06-02-03)
692	------------------------
693	- G4Navigator: corrected computation of fGrandMotherExitNormal in ComputeStep()
694	in the case where a not valid exit-normal exists.
695
696	Sep 11th, 2004 - G.Cosmo (geomnav-V06-02-02)
697	------------------------
698	- Dump out contents from the solid when a fatal G4Exception is thrown from
699	the navigators in ComputeStep().
700	Modified files G4NormalNavigation.cc, G4ParameterisedNavigation.cc,
701	G4ReplicaNavigation.cc, G4VoxelNavigation.cc.
702
703	Aug 31st, 2004 - D.C.Williams (geomnav-V06-02-01)
704	-----------------------------
705	- G4GeomTestSegment: fix to correctly determine whether starting trajectory
706	is entering or exiting the solid when the starting point is on a surface.
707	Added additional tests on solid consistencies (from roundoff sometimes) to
708	avoid incorrect overlap warnings. Addresses problem reports #610 and #652.
709
710	Jun 29th, 2004 - G.Cosmo (geomnav-V06-02-00)
711	------------------------
712	- Fixed zero step-length problem in G4ReplicaNavigation::ComputeStep()
713	for cases where different replica types are coincident. Resolves
714	problem report #633.
715	- G4NormalNavigation: added extra verbosity to print out information
716	for each solid which returns a 'lowest-yet' step, including the
717	mother volume. It is activated by setting verbose level to 2 or
718	more (J.Apostolakis).
719
720	Jun 18th, 2004 - G.Cosmo (geomnav-V06-01-03)
721	------------------------
722	- Enhanced check for null step in G4Navigator::ComputeStep().
723	Now attempting a corrective action after 10 consecutive zero steps.
724	Event gets aborted after 25 zero steps.
725
726	Jun 15th, 2004 - G.Cosmo (geomnav-V06-01-02)
727	------------------------
728	- Relax exception in G4Navigator::ComputeStep() for stuck tracks.
729	Event gets aborted after 25 zero steps.
730
731	Jun 11th, 2004 - G.Cosmo (geomnav-V06-01-01)
732	------------------------
733	- Added check to G4Navigator to count the number of steps with zero length
734	and issue an exception for tracks that get stuck in a loop (J.Apostolakis).
735	- Modified GNUmakefile to define G4GEOMETRY_ALLOC_EXPORT flag for DLLs
736	build on Windows.
737
738	May 17th, 2004 - G.Cosmo (geomnav-V06-01-00)
739	------------------------
740	- Added more verbosity on solids response for navigators (optimised/not
741	optimised) if "check_mode" state is combined with verbose level-1.
742
743	Mar 11th, 2004 - G.Cosmo (geomnav-V06-00-02)
744	------------------------
745	- Added "check_mode" state for navigators. The state can be activated by
746	a new UI command (geometry/navigator/check_mode [true/false]) and will
747	force more strict and less tolerant checks in step/safety computation to
748	verify the correctness of solids' response in the geometry.
749	- Reorganised verbosity levels. Added more useful information activated
750	when in G4VERBOSE mode and verbosity level selected.
751	Fixed output formatting when entering/exiting verbose blocks.
752
753	Feb 27th, 2004 - G.Cosmo (geomnav-V06-00-01)
754	------------------------
755	- G4Navigator.cc:
756	o Fixed old outstanding bug in ComputeStep() for the location of the
757	the local point in the calculation of a valid exit normal. (V.Grichine)
758
759	Feb 9th, 2004 - J.Apostolakis (geomnav-V06-00-00)
760	------------------------------
761	- G4PropagatorInField.cc:
762	o ReEstimateEndpoint: Changed to cope with a failure of AccurateAdvance,
763	by calling it iteratively up maximum 20 times.
764	o SetVerboseLevel, now forwards the verbosity (minus 3) to integration driver
765
766	Dec 11th, 2003 - J.Apostolakis (geomnav-V05-02-15)
767	------------------------------
768	- G4PropagatorInField.cc:
769	o LocateIntersectionPoint: Refined re-setting of finalSection.
770	--> Endpoint recalculation is returned only for final section.
771	(trial fix in -14 is replaced by above code)
772	o Fixed ReEstimateEndPoint which ignored return code of AccurateAdvance
773	and moved to short end-point for long requests
774	It now leaves the endpoint unchanged, when it cannot improve it.
775	o Few format changes for PrintStatus
776
777	Dec 10th, 2003 - J.Apostolakis (geomnav-V05-02-14)
778	------------------------------
779	- G4PropagatorInField.cc on top of latest (not 1.7):
780	o Fix for the case where two previous corrections are 'operational'
781	Problem if the current endpoint is not the final one, and it has been
782	recalculated, and we need to go beyond the current section to the
783	final one -- the recalcuted endpoint no longer valid!
784
785	Dec 10th, 2003 - J.Apostolakis (geomnav-V05-02-13)
786	------------------------------
787	- G4PropagatorInField.cc:
788	o Gone back to version 1.7, without the fix in LocateIntersectionPoint
789	for the "long-standing error".
790
791	Dec 5th, 2003 - G.Cosmo - (geomnav-V05-02-12)
792	------------------------
793	- G4TransportationManager.cc:
794	o removed initialisation of allocators for navigation levels, where they
795	were introduced as workaround for solving static initialisation a long
796	time ago. Now moved to "volumes" module, where they should belong, in
797	G4TouchableHistory.cc.
798	- Restored original unit-tests, using inherited navigator.
799	--> Requires geomvol-V05-02-08
800
801	Dec 4th, 2003 - J.Apostolakis (geomnav-V05-02-11)
802	------------------------------
803	- G4PropagatorInField.cc
804	o Corrected placement of #endif for two #ifdef VERBOSE
805
806	Dec 2nd, 2003 - J.Apostolakis (geomnav-V05-02-10)
807	------------------------------
808	- G4PropagatorInField[.hh.cc]:
809	o Fixed LocateIntersectionPoint for long-standing error.
810	A section of the chord was not considered in use case where
811	a previous chord at first appeared to have an intersection, but did not.
812
813	Nov 26th, 2003 - J.Apostolakis (geomnav-V05-02-09)
814	------------------------------
815	- G4PropagatorInField[.hh.cc]:
816	o Added argument Method LocateIntersectionPoint G4bool& recalculatedEndPt
817	to return 'true' if the endpoint has been recalculated.
818	This fixes a problem that can occasionally cause the skipping of a volume
819	boundary - in the case when a re-integration was done near a boundary,
820	because the new endpoint was previously not passed back.
821	o ComputeStep also changed to accept above recalculation.
822	o New method GetVerboseLevel(), closer to std naming than Verbose()
823
824	Nov 14th, 2003 - J.Apostolakis (geomnav-V05-02-08)
825	------------------------------
826	- Retagged the files of tag "geomnav-V05-02-07", due to tagging with same
827	name incorrectly files in another directory and, as such confusing Bonsai.
828
829	Nov 13th, 2003 - J.Apostolakis (geomnav-V05-02-07)
830	------------------------------
831	- G4PropagatorInField[.hh.icc.cc]:
832	o Pass safety sphere information to G4ChordFinder for optimisation
833	o Including G4ChordFinder.hh only in .cc file
834	- Requires and coworks with "field-V05-02-08" tag.
835
836
837	Nov 10th, 2003 - G.Cosmo (geomnav-V05-02-06)
838	------------------------
839	- G4Navigator[.hh.icc.cc] - methods review:
840	o Removed obsolete methods: IsExitNormalValid(), GetLocalExitNormal().
841	o Renamed method LocateGlobalPointAndSetup(p,v,history) to
842	ResetHistoryAndLocate(p,v,history).
843	o Moved to protected the following methods: GetCurrentLocalCoordinate(),
844	ComputeLocalPoint(), ComputeLocalAxis(), NetTranslation(),
845	NetRotation(), EnteredDaughterVolume().
846	o Fixed consistency of inline/not-inline implementations of methods.
847	- Coworks with tag "tracking-V05-02-03".
848
849	Nov 6th, 2003 - J.Apostolakis (geomnav-V05-02-05)
850	-----------------------------
851	- G4PropagatorInField[.hh.icc.cc]:
852	o Implements move of EpsilonMin / Max to G4FieldManager.
853	- Requires and coworks with "field-V05-02-04" or later tag.
854
855	Nov 6th, 2003 - G.Cosmo (geomnav-V05-02-04)
856	-----------------------
857	- G4Navigator[.hh.icc.cc]:
858	o Made relevant methods virtual to verify performance impact.
859	If tests will behave reasonably, a further refinement in the
860	design of the class will be applied, in view of a more consistent
861	design review next year.
862
863	Nov 3rd, 2003 - G.Cosmo (geomnav-V05-02-03)
864	-----------------------
865	- Code cleanup and headers inclusion review
866	(replaced by forward declarations where necessary).
867	- Added build system to tests. Cleared compilation warnings.
868
869	Oct 29th, 2003 - J.Apostolakis (geomnav-V05-02-02)
870	------------------------------
871	- G4PropagatorInField:
872	Added option to turn On/Off the optimisation of using the safety
873	in calling G4Navigator.
874	- Unit tests: moved test testG4NavigatorX, X=1,2,3,4,5,6 here from
875	"volumes" module.
876
877	Oct 24th, 2003 - G.Cosmo (geomnav-V05-02-01)
878	------------------------
879	- Migrated calls to G4Exception to new scheme.
880	- Fixed compilation warning in G4PropagationInField.
881
882	Sep 29th, 2003 - G.Cosmo (geomnav-V05-02-00)
883	------------------------
884	- Created.
885	Imported classes from "volumes", "management" and "verification" modules:
886	G4AuxiliaryNavServices[.hh.icc] - from geometry/volumes
887	G4GeometryMessenger[.hh.cc] - " "
888	G4Navigator[.hh.icc.cc] - " "
889	G4NormalNavigation[.hh.icc.cc] - " "
890	G4ParameterisedNavigation[.hh.icc.cc] - " "
891	G4PropagatorInField[.hh.icc.cc] - " "
892	G4ReplicaNavigation[.hh.icc.cc] - " "
893	G4TransportationManager[.hh.icc.cc] - " "
894	G4VoxelNavigation[.hh.icc.cc] - " "
895	G4DrawVoxels[.hh.cc] - from geometry/management
896	G4GeomTest*[.hh.cc] - from geometry/verification
897	- Cleared call to PV->Setup() according to changes in G4VPhysicalVolume.
898	Affected files: G4Navigator[.icc.cc], G4ParameterisedNavigation[.icc.cc],
899	G4VoxelNavigation[.icc.cc], G4ReplicaNavigation[.icc.cc],
900	G4NormalNavigation[.icc.cc].
901	- G4DrawVoxels: retrieve top transformation through touchable history in
902	method DrawVoxels(). Removed old method GetAbsoluteTransformation().
903	- G4GeomTestErrorList.cc: retrieve top transformation through touchable
904	history in method FindGlobalCoordinateSystem().
905
906	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
907	Imported History file from old geometry/verification module
908	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
909
910	May 20th, 2003 G.Cosmo (geomver-V05-01-00)
911	- G4GeomTestVolume[.hh.cc]:
912	o Added methods TestRecursiveLine() and TestRecursiveCylinder() for
913	allowing recursion on line_test and cylinder_test respectively.
914	o Introduced ability to control depth and starting level of recursion.
915
916	Jul 30th, 2002 G.Cosmo (geomver-V04-01-00)
917	- G4GeomTestVolume.cc: fixed recursive call to G4GeomTestVolume passing also
918	'tolerance' as argument in the recursive test algorithm.
919
920	Apr 19th, 2002 G.Cosmo (geomver-V04-00-00)
921	- Moved inline constructors and destructors to no inline.
922	Affected files: G4GeomTestStreamLogger[.hh.cc].
923
924	Oct 24th, 2001 G.Cosmo (geomver-V03-02-02)
925	- Fixed compilation error and warnings on HP-aCC. Modified files:
926	G4GeomTestVolume.cc, G4GeomTestStreamLogger.cc.
927
928	Oct 24th, 2001 G.Cosmo (geomver-V03-02-01)
929	- Moved messenger to geometry/volumes and renamed G4GeometryMessenger.
930	- Removed dependencies from intercoms and geometry/volumes.
931
932	Oct 22nd, 2001 G.Cosmo (geomver-V03-02-00)
933	- Added "/geomtest/tolerance" command to set custom error tolerance.
934	Added Set/GetTolerance() methods to G4GeomTestVolume class.
935	- Introduced additional diagnostics in G4GeomTestStreamLogger to report
936	in case no intersections/overlaps are detected.
937
938	Oct 16th, 2001 G.Cosmo
939	- Added messenger for geometry overlaps testing.
940	- General source code formatting.
941	- G4TestGeom* classes implementation by D.C.Williams (UCSC, BaBar).

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