$Id: History,v 1.139 2010/02/09 16:50:44 gcosmo Exp $
-------------------------------------------------------------------

     =========================================================
     Geant4 - an Object-Oriented Toolkit for Simulation in HEP
     =========================================================

                      Category History file
                      ---------------------
This file should be used by G4 developers and category coordinators
to briefly summarize all major modifications introduced in the code
and keep track of all category-tags.
It DOES NOT substitute the  CVS log-message one should put at every
committal in the CVS repository !

     ----------------------------------------------------------
     * Reverse chronological order (last date on top), please *
     ----------------------------------------------------------

February 9, 2010  G.Cosmo                  geommng-V09-03-00
- Fixed initialisation of min/max extent for mother and target volumes in
  method BuildNodes() of G4SmartVoxelHeader.

November 27, 2009  G.Cosmo                 geommng-V09-02-05
- G4Region: added pointer to field-manager and associated accessor/modifier.

November 6, 2009  G.Cosmo                  geommng-V09-02-04
- G4VTouchable: moved inline vitual methods, constructor and destructor to
  source, to avoid problem of memory alignment in allocation of derived objects.

October 30, 2009  G.Cosmo                  geommng-V09-02-03
- Clear possible excess capacity in node vectors in G4SmartVoxelHeader
  BuildNodes() method. May reduce excess memory allocated in optimisation
  in large detector setups, with slight time increase in initialisation for
  geometry voxelisation.

September 24, 2009  G.Cosmo                geommng-V09-02-02
- Fixed implementation of G4LogicalVolume::TotalVolumeEntities() to become
  invariant to call sequence.

May 25, 2009  G.Cosmo                      geommng-V09-02-01
- Fixed initialisation of min/max extent in method BuildReplicaVoxels() in
  G4SmartVoxelHeader.

April 16, 2009  G.Cosmo                    geommng-V09-02-00
- Adopt 'const' references for strings as arguments/return-values in
  G4LogicalSurface. Some minor cleanup...

September 23, 2008  G. Cosmo               geommng-V09-01-08
- G4VSolid: explicitely reserve memory for polygon vectors in clipping
  algorithm to help reducing memory footprint. Courtesy of P.Elmer, CMS.

September 10, 2008  G. Cosmo               geommng-V09-01-07
- G4VSolid: promote copy-constructor and assignment operator to public
  to cope with specific use-case in ATLAS (see problem report #1023).

July 15, 2008  G.Cosmo                     geommng-V09-01-06
- G4Region: re-introduced protection for setting of root-region flag to the
  world volume in method RemoveRootLogicalVolume(), to cover case of explicit
  deletion of stores in the user application for dynamic geometries setups.

July 10, 2008  G.Cosmo                     geommng-V09-01-05
- G4LogicalVolume, G4LogicalVolumeStore: modified logic for the deletion
  of the root-region volumes, adding locking mechanism and automatically
  de-registering the world default root-region.
  Simplified Clean() method in the store, by removing unused and unnecessary
  flag for logical-volumes notification.
- Reinstated update of materials in G4Region::RemoveRootLogicalVolume()
  to correct handling individual removal of root-region volumes and restore
  proper setup state.

May 16, 2008  G.Cosmo                      geommng-V09-01-04
- G4Region: changed condition inside ScanVolumeTree() to check for the
  existence of a valid material-scanner pointer to apply the material scan
  instead of using the flag for nested structures.
- G4GeometryManager: do not apply optimisation on the current volume if it
  has been defined as a regular structure.
- Addresses problem report #990 on suggestions by M.Mendenhall.

March 13, 2008  G.Cosmo                    geommng-V09-01-03
- Cleared compilation warnings in G4GeometryManager on gcc-4.3.0 for
  ambiguous use of parentheses in condition statements.

February 20, 2008  I.Hrivnacova            geommng-V09-01-02
- Implemented missing protected copy-contructor and assignment operator
  for G4VSolid.

January 24, 2008  G.Cosmo                  geommng-V09-01-01
- Added Shrink() method to G4SmartVoxelNode to shrink memory allocated
  for the buffer of slices; to be used for studying ways of reducing memory
  waste when building nodes in G4SmartVoxelHeader for large geometry setups.

January 14, 2008  G.Cosmo                  geommng-V09-01-00
- Added Reserve() method to G4SmartVoxelNode to reserve memory allocated
  for the buffer of slices; to be used for studying ways of reducing memory
  waste when building nodes in G4SmartVoxelHeader for large geometry setups.

October 24, 2007  G.Cosmo                  geommng-V09-00-01
- Fixed typo in forcing minimum number of points in method
  G4VSolid::EstimateSurfaceArea(). Addresses problem report #981.

July 16, 2007  G.Cosmo                     geommng-V09-00-00
- Added dummy constructor and destructor to G4VPVParameterisation.

June 19, 2007  G.Cosmo                     geommng-V08-03-03
- Apply migration to <cmath> and std:: for G4ErrorCylSurfaceTarget and
  G4ErrorPlaneSurfaceTarget implementations. Fixes compilation problems
  detected on Windows VC++8.

May 16, 2007  G.Cosmo                      geommng-V08-03-02
- Introduced new classes for handling error propagation: G4ErrorTarget,
  G4ErrorSurfaceTarget, G4ErrorTanPlaneTarget, G4ErrorPlaneSurfaceTarget,
  G4ErrorCylSurfaceTarget (by P.Arce).
- Coworks with tag "global-V08-03-02".

May 11, 2007  G.Cosmo                      geommng-V08-03-01
- Use call to G4GeometryTolerance instead of kCarTolerance where needed.
- Requires tag "global-V08-03-00" and related tag set.

April 26, 2007  M.Asai                     geommng-V08-03-00
- Added forward declaration and pointer (with set/get methods) to
  G4VUserSteppingAction, to allow for stepping actions defined at region.

April 11, 2007  G.Cosmo                    geommng-V08-02-02
- Added 'get' methods to stores for retrivial of volumes/solid by name.
- Modified signature of G4VPhysicalVolume::CheckOverlaps() to introduce
  ability of handling tolerances for overlaps.
- Coworks with tag "geomvol-V08-02-02".

March 20, 2007  G.Cosmo                    geommng-V08-02-01
- Do not reset RegionRootFlag in RemoveRootLogicalVolume() if volume is the
  world, since the volume itself may be already removed from the store if
  G4LogicalVolumeStore::Clean() is called.

January 31, 2007  G.Cosmo                  geommng-V08-02-00
- Added flag for controlling verbosity to CheckOverlaps() method.
  By default, verbosity is ON.

November 30, 2006  G.Cosmo                 geommng-V08-01-08
- Corrected deregistration and deletion of world default region, now
  happening through G4RunManagerKernel. Affected codes: G4LogicalVolume
  destructor and G4RegionStore::Clean() method.
- Minor cleanup in the implementation of the other stores.

November 8, 2006  G.Cosmo                  geommng-V08-01-07
- Fixed compilation problems on SUN-CC for changes in the last tag.
  Added inclusion of <sstream> header in G4ReflectedSolid.cc.

November 6, 2006  J.Allison                geommng-V08-01-06
- Fix in G4ReflectedSolid::CreatePolyhedron() for case of component that
  does not have a G4Polyhedron representation.

October 23, 2006  G.Cosmo                  geommng-V08-01-05
- Replaced algorithm for EstimateSurfaceArea() in G4VSolid with more precise
  method by M.Kosov based on skin surface estimation.

October 19, 2006  G.Cosmo                  geommng-V08-01-04
- Modified interface for GetSurfaceArea() to be similar to the one for
  the computation of the geometrical volume, and allow the caching
  mechanism.

October 18, 2006  G.Cosmo                  geommng-V08-01-03
- Added GetSurfaceArea() method to G4VSolid for approximated computation
  of the surfare area of a shape.

October 2, 2006  G.Cosmo                   geommng-V08-01-02
- Removed debug printout in G4IdentityTrajectoryFilter implementation.

September 18, 2006  G.Cosmo                geommng-V08-01-01
- Added empty virtual method CheckOverlaps() to G4VPhysicalVolume to allow
  for proper overloading from subclasses. Implementation returns always
  'false', which the case for replicas.

July 17, 2006  M.Asai                      geommng-V08-01-00
- Fix a bug in G4Region.cc for nested parameterization.

May 3, 2006  G.Cosmo                       geommng-V08-00-05
- Modified G4VStoreNotifier class to be now a typedef of G4VNotifier which
  is moved in the 'global' module. Adapted stores to the new configuration.
- Requires tag "global-V08-00-02".

May 2, 2006  G.Cosmo                       geommng-V08-00-04
- Moved G4AssemblyTriplet class to 'volumes' module.
- Requires tag "geomvol-V08-00-03".

May 1, 2006  G.Cosmo                       geommng-V08-00-03
- G4Region:
  o Added inclusion of <algorithm> to resolve compilation error on WIN32-VC.
  o Fixed compilation warning for unused variable.

April 28, 2006  G.Cosmo                    geommng-V08-00-02
- G4VPhysicalVolume: return 'const G4String&' for GetName() instead of a
  string copy.

April 4, 2006  G.Cosmo                     geommng-V08-00-01
- G4Region:
  + Support material scanning for nested parameterisations. Moved classes
    G4VNestedParameterisation and G4VVolumeMaterialScanner from 'volumes'
    module.
  + Fixed implementation of utility method GetParentRegion() to return a
    boolean flag as argument, to identify if parent region is unique or not.
  + Simplified implementation of method BelongsTo(PV*).
- Requires tag "geomvol-V08-00-02".

April 3, 2006  G.Cosmo                     geommng-V08-00-00
- Fix in G4SmartVoxelHeader::BuildNodes() to avoid rare cases of negative
  extent returned by volumes due to malformed geometries or inaccurate
  extent calculation.

November 19, 2005  J.Apostolakis           geommng-V07-01-05
- Revised G4VPVParameterisation:
  + Changed signature of ComputeMaterial(), adding parent touchable pointer.
    This refinement enables easy use of nested parameterisations.
  + Additional methods allow nested parameterisation to be identified:
      G4bool IsNested() const;
    and to provide their material via new interface class:
      G4VVolumeMaterialScanner* GetMaterialScanner(); 
  + Suppressed temporary G4PhysicalTouchable class in volumes, not needed 
    in the implementation any longer.

November 11, 2005  J.Apostolakis           geommng-V07-01-04
- Added methods to identify  Regular Structures in  Physical volume 
  New pure virtual methods:
    - IsRegularStructure()     ,  returns boolean 
    - GetRegularStructureId()  ,  returns code for structure type

November 9, 2005  G.Cosmo                  geommng-V07-01-03
- Added fake default constructor for base types of volumes, solids and
  regions, for usage of direct object persistency.
- Migrated unit test TestAssemblyVolume to <sstring> from
  deprecated <strstream>.

October 28, 2005  M.Asai                   geommng-V07-01-02
- Merged concept of "envelope" to G4Region for fast-parameterisation.

September 15, 2005  V.Grichine             geommng-V07-01-01
- Added concrete implementation for GetPointOnSurface() to G4ReflectedSolid.

August 10, 2005  G.Cosmo                   geommng-V07-01-00
- Added virtual method GetPointOnSurface() to G4VSolid to be implemented in
  the concrete solids classed for returning a random-point uniformely
  distributed on the surface.

May 25, 2005  G.Cosmo                      geommng-V07-00-04
- Fixed problem with previous tag, where version of G4LogicalVolume.cc was
  not correct and untagged.
- G4LogicalVolume::SetVisAttributes(const G4VisAttributes& VA): now creating
  a copy of 'VA' on the heap. Temporary solution, until a proper 'store' for
  visualization attributes will be implemented to take care of the memory
  management.

May 23, 2005  G.Cosmo                      geommng-V07-00-03
- Modified comments in G4VSolid and G4BlockingList to overcome a limitation in
  the scripts for the generation of the Software Reference Manual.

Apr 13, 2005  G.Cosmo                      geommng-V07-00-02
- Extended signatures for OpenGeometry() and CloseGeometry() to consider local
  optimisation of a subtree of volumes. Voxelisation can now apply to just a
  specific subtree if a physical volume is specified.

Apr 02, 2005  M.Asai                       geommng-V07-00-01
- Added protection against NULL material pointer for volumes belonging
  to the tracking geometry in G4Region scanning.
  Addresses problem report #735.

Mar 23, 2005  J.Allison
- Added test for Number-Of-Rotation-Steps in G4ReflectedSolid::GetPolyhedron().
  Requires tag "greps-V07-00-02".

Mar 22, 2005  J.Allison
- G4ReflectedSolid: correction: changed AddThis to AddSolid.

Mar 02, 2005  G.Cosmo                      geommng-V07-00-00
- Added optional boolean argument 'propagate' to GetMass() to avoid
  propagation of computation of masses to the daughter volumes (courtesy
  of G.Santin). Propagation to daughters is done by default.

Feb 18, 2005  M.Asai
- Added G4UserLimits pointer to G4Region and added access from G4LogicalVolume.

Dec 02, 2004  G.Cosmo                      geommng-V06-02-08
- Implemented migration to <cmath> for standard mathematical functions.

Nov 19, 2004  G.Cosmo                      geommng-V06-02-07
- Added GetCopyNumber() method to G4VTouchable, clone of GetReplicaNumber().

Nov 16, 2004  M.Asai                       geommng-V06-02-06
- Fix in G4LogicalVolume::UpdateMaterial() for checking the existance of
  root-region pointer for logical-volume. Fixes report #684.

Nov 13, 2004  G.Cosmo                      geommng-V06-02-05
- Added method TotalVolumeEntities() to G4LogicalVolume, returning the
  total number of physical volumes (placed or replicated/parameterised)
  included in the tree represented by the current logical volume.
- Correction in the computation of mass for parameterised volumes.

Nov 12, 2004  G.Cosmo                      geommng-V06-02-04
- Added method GetMass() to G4LogicalVolume, returning the value in absolute
  units of the mass of the logical volume tree. The mass is computed from the
  estimated geometrical volume of each solid and material's density associated
  to the logical volume and its daughters.
  The returned value is cached and can be used for successive calls (default),
  unless recomputation is forced by providing 'true' as the first boolean
  argument in input. Computation should be forced if the geometry setup has
  changed after the previous call. An optional argument to specify a material
  is provided; it is implicitely used for geometrical parameterisations by
  material.

Oct 10, 2004  J.Allison                    geommng-V06-02-03
- Added GetPolyhedron, a smart access function that creates a G4Polyhedron
  on request and stores for future access.  A null pointer means "not
  available".

Sep 28, 2004  M.Asai                       geommng-V06-02-02
- G4Region:
  o Added map for storage of materials/cuts.
  o Added methods for handling registration of couples in the map, finding
    a couple according to a given material, clearing the map's storage.
- G4LogicalVolume:
  o Added method UpdateMaterial() to refresh a material/cut couple in
    the corresponding region.

Sep 22, 2004  G.Cosmo                      geommng-V06-02-01
- Introduced virtual method GetCubicVolume() to G4VSolid, returning an
  estimation of the solid volume in internal units. This method may be
  overloaded by derived classes to compute the exact geometrical
  quantity for solids where this is possible, or anyway to cache the
  computed value. By default it uses the new protected method
  EstimateCubicVolume(stat, eps) with fixed statistics and error
  accuracy, and does not cache the computed value.

Sep 02, 2004  G.Cosmo                      geommng-V06-02-00
- Introduced abstract class G4VStoreNotifier to be optionally associated
  to stores by the user for the notification of the registration and
  deregistration of objects in the stores.
- Added notification mechanism to volume, solid, and region stores.
- Fixed G4RegionStore::Clean() to avoid deletion of world region.

May 07, 2004  G.Cosmo                      geommng-V06-01-00
- Imported G4ReflectedSolid class from solids/Boolean.
- Added abstract factory G4VPVDivisionFactory defining interfaces
  for the creation of volumes divisions (courtesy of I.Hrivnacova).
- Coworks with tags: geomvol-V06-01-00, geomdiv-V06-01-00 and
                     geom-bool-V06-01-00.

Dec 01, 2003  P.Gumplinger                 geommng-V05-02-05
- G4LogicalSurface[.hh.icc]: modified to use G4SurfaceProperty instead
  of G4OpticalSurface. Requires tag "materials-V05-02-00".

Nov 04, 2003  G.Cosmo                      geommng-V05-02-04
- G4LogicalVolume.hh: added inclusion of assert.h required by .icc file.

Nov 01, 2003  G.Cosmo                      geommng-V05-02-03
- Code cleanup and headers inclusion review (replaced by forward
  declarations where necessary).
- G4VPVParameterisation: added G4Polycone and G4Polyhedra to list of
  possible parameterisations by dimension.

Oct 24, 2003  G.Cosmo                      geommng-V05-02-02
- Migrated calls to G4Exception to new scheme.

Oct 21, 2003  M.Asai                       geommng-V05-02-01
- Introducing G4VUserRegionInformation class.
- G4VPVParameterisation: added G4Orb. (V.Grichine)

Sep 30, 2003  G. Cosmo                     geommng-V05-02-00
- Logical reorganisation and restructure of modules.
  Moved files to geometry/volumes:
    G4AssemblyVolume[.hh.icc.cc]
    G4PVParameterised[.hh.cc]
    G4PVPlacement[.hh.cc]
    G4PVReplica[.hh.cc]
  Moved files to new module geometry/navigation:
    G4DrawVoxels[.hh.cc]
  Imported files from geometry/volumes:
    G4BlockingList[.hh.icc.cc]
    G4IdentityTrajectoryFilter[.hh.cc]
    G4VCurvedTrajectoryFilter[.hh.cc]
- G4VPhysicalVolume[.hh.icc.cc]:
  o Removed pointer to mother physical volume and related accessor
    methods: SetMother()/GetMother().
  o Removed pure virtual method Setup(G4VPhysicalVolume*), no longer
    necessary. Subclasses will require modification as well.
- G4LogicalVolume.icc:
  o Updated/fixed initialisation of data and fast-simulation manager
    according to above changes.
- G4SmartVoxelHeader.cc:
  o Cleared usage of PV-Setup(), according to above changes.

May 19, 2003  G. Cosmo                     geommng-V05-01-01
- G4LogicalVolume.cc: notify removal of root-logical-volume from G4Region
  in case of deletion of a logical-volume from the destructor, instead that
  from DeRegister() method.
- G4LogicalVolumeStore.cc: removed redundant check and call to
  RemoveRootLogicalVolume() from Clean() method.
- G4Region.cc: removed redundant calls to ScanVolumeTree() and
  UpdateMaterials() from RemoveRootLogicalVolume() method.

May 13, 2003  G. Cosmo                     geommng-V05-01-00
- G4LogicalVolume: added method ClearDaughters() to be used for resetting
  the list of daughters to a logical volume in the use-case when only the
  physical volume store is cleared at run-time.
- GVPhysicalVolume:
  o Added pointer to mother logical volume (will replace in future releases
    the pointer to mother physical volume) and related accessors.
  o Standardised registration mechanism as daughter for constructor using
    the pointer to the mother's PV.
- G4PhysicalVolumeStore:
  o Added notification mechanism to logical volumes in the Clean() method
    to update the list of daughters.
  o Update mother's LV list of daughters when deregistering a volume.
- G4PVPlacement/Replica/Parameterised: standardised registration mechanism
  as daughter for constructor using the pointer to the mother's PV.

April 3, 2003  M. Dressel                  geommng-V05-00-09
- G4LogicalVolume: added method for scanning recursively the volume tree
  and retrieve if the current LV is ancestor of a given PV:
    G4bool IsAncestor(const G4VPhysicalVolume*) const

March 31, 2003  G. Cosmo                   geommng-V05-00-08
- Fixed trivial strict pedantic warnings in G4VSolid.cc and G4PVPlacement.cc.

March 24, 2003  G. Cosmo                   geommng-V05-00-07
- G4Region.cc: fixed setting/resetting of regions in ScanVolumeTree().

March 05, 2003  M. Asai                    geommng-V05-00-06
- G4Region.cc: fix for scanning of parameterised materials.

March 05, 2003  G. Cosmo                   geommng-V05-00-05
- G4LogicalVolume.icc: added check for invalid geometry constructions.
  Issue an exception if a placement is attempted in a volume already
  containing a replicated daughter.
- Cosmetic formatting changes in G4PVPlacement.cc and G4VPhysicalVolume.cc.

February 07, 2003  G. Cosmo                geommng-V05-00-04
- Added method FindOrCreateRegion() to G4RegionStore.
- Added check in constructor of G4Region for existance of region in store.
  In case a region with the given name already exists, throw a warning and
  do not register it.

January 30, 2003  G. Cosmo                 geommng-V05-00-03
- Allow logical volume store to deregister root regions for logical volumes
  deleted explicitely.
  Modified files: G4logicalVolumeStore.cc, G4LogicalVolume[.hh.icc.cc].
- G4Region.hh: moved ClearMaterialList() to public.

January 15, 2003  G. Cosmo                 geommng-V05-00-02
- Included fix in G4VSolid.cc introduced in "geommng-V04-01-06".

January 14, 2003  M.Asai                   geommng-V05-00-01
- Fix in src/G4Region.cc.
  Does not include fix in "geommng-V04-01-06".

December 16, 2002  G. Cosmo                geommng-V05-00-00
- Merged branch "geant4-04-01-ref-02-cuts-branch" to HEAD.
  Included development for 'cuts-by-region'; introduced new classes
  G4Region and G4RegionStore. Modified G4LogicalVolume to handle recursive
  propagation of regions to daughters.
  Does not include fix in "geommng-V04-01-06".

December 6, 2002  V. Grichine              geommng-V04-01-06
- G4VSolid.cc: restored original conditions for extent clipping in
  method ClipPolygon(). Makes unit tests run successfully.

November 19, 2002  G. Cosmo                geommng-V04-01-05
- G4GeometryManager[.cc]
  o Fixed bug in initialisation of fine-grained timer
    (courtesy of Helmut Burkhardt).

November 09, 2002  G. Cosmo                geommng-V04-01-04
- G4LogicalVolume.cc:
  o Correction to propagation of the Field Manager to Daughter volumes:
    it should be propagated to all daughters that do not have one -- not to all the
    ones that have one already. Fixes bug report for field by logical volume.
    (J.Apostolakis)

October 28, 2002  G. Cosmo                 geommng-V04-01-03
- G4VSolid[.hh.icc.cc]:
  o Added pure virtual method StreamInfo() to stream contents of a solid
    to a generic output stream.
  o Added method DumpInfo() using StreamInfo() to dump contents to the
    standard output.

October 23, 2002  G. Cosmo                 geommng-V04-01-02
- G4PVReplica.cc:
  o Corrected order for check on illegal constructions, in constructor taking
    a pointer to logical volume as mother volume.
  o Improved output diagnostics.
- G4PVParameterised.cc:
  o Improved output diagnostics for check on illegal constructions.

October 16, 2002  G. Cosmo                 geommng-V04-01-01
- G4PVReplica.cc, G4PVParameterised.cc:
  Added checks for illegal geometry contructions; contructors now verify unicity
  of daughter volumes for replicas and parameterised volumes, as well as checks
  for attempt to replicate/parameterise the world volume.

October 4, 2002  G. Cosmo
- G4PVParameterised[.hh.cc], G4PVPlacement[.hh.cc]:
  Added new method IsParameterised() to enquire for existing parameterisation
  for a placed volume.
- G4PVReplica[.hh.cc], G4VPhysicalVolume[.hh.cc]:
  Added methods IsParameterised() and GetMultiplicity() to enquire for existing
  parameterisation of placed volume, and number of replicated volumes.

September 11, 2002  G. Cosmo               geommng-V04-01-00
- G4AssemblyVolume[.hh.icc.cc]:
  o Fixed bug #409 concerning missing imprint counter method.
  o Fixed bug #410 concerning the internal counting mechanism.
    The fix involved the addition of a new data member fAssemblyID,
    holding the instance ID of the given object derived from
    class-wide counter. Corresponding accessor methods has been
    added as well.
- Updated unit test TestAssemblyVolume, to add call to G4RunManager
  for resetting nagivator state in TstVADetectorConstruction.cc.

June 24, 2002  G. Cosmo                    geommng-V04-00-08
- G4AssemblyVolume[.hh.cc]:
  o Moved accessors to assembly counters to public.
  o Added support for user definable count base for generated physical volumes.
  Fixes problem report #382.

June 7, 2002  G. Cosmo                     geommng-V04-00-07
- G4AssemblyVolume[.hh.cc]:
  o Fixed inconsistent handling of input rotation matrices by caching them
    with corresponding deallocation at destruction time.
    Comments updated accordingly with a warning about foreseen changes
    in methods' interfaces expected by next major release 5.0.
  o Correctly handle cases when pointer to rotation matrix is zero.
  o Updated unit test.

May 17, 2002  G. Cosmo                     geommng-V04-00-06
- Added ability to optionally optimise/non-optimise detector regions
  using logical volumes:
  o G4LogicalVolume:
    - Introduced additional bool argument to constructor,
      set to 'true' by default.
    - Added method IsToOptimise() with corresponding bool flag attribute.
  o G4GeometryManager:
    - Adapted BuildOptimisations() method to consider optional optimisation
      flag from G4LogicalVolume.

May 15, 2002  G. Cosmo                     geommng-V04-00-05
- G4SmartVoxelHeader:
  o Added utility method GetParamAxis() to retrieve suggested axis for
    optimisation of parametrised geometry.
  o Enhanced BuildReplicaVoxels() to apply 3D voxelisation for non-consuming
    nodes if undefined axis is specified for parametrised volumes. In such
    case, optimisation for parameterised volumes is applied similarly to
    normal placements.
- G4PVReplica.cc: deal with 'kUndefined' EAxis.
- Co-works with "global-V04-00-06".

May 13, 2002  G. Cosmo                     geommng-V04-00-04
- G4VSolid: use polygon clipping for limited voxel when != pAxis (V.Grichine).
- G4GeometryManager: added method IsGeometryClosed() for detecting geometry
  closed or open.
- G4LogicalVolumeStore, G4PhysicalVolumeStore, G4SolidStore: added protection
  to Clean() method for checking if geometry is closed.
- G4SmartVoxelHeader.cc: cosmetics and formatting cleanup.

April 19, 2002  G. Cosmo                   geommng-V04-00-03
- Moved inline constructors/destructors to no inline.
  Affected files: G4DrawVoxels[.hh.cc], G4SmartVoxelNode[.hh.cc],
                  G4SmartVoxelProxy[.hh.cc], G4VoxelLimits[.hh.cc].
- Enhanced behavior for destructors of volumes/solids stores.
  o Added locking mechanism for preventing conflicts when destroying stores
    and deregistering pointers. Now destructors of stores will also
    explicitely delete pointers (and therefore allocated volumes/solids)
    dynamically allocated in the user application.
  o Added Clean() static method to volumes/solids stores to explicitely
    delete pointed objects in the stores and clear all entries.
  o Modified files: G4LogicalVolumeStore[.hh.cc], G4SolidStore[.hh.cc],
                    G4PhysicalVolumeStore[.hh.cc].

April 16, 2002  V. Grichine                geommng-V04-00-02
- G4VSolid[.hh.cc]: fixed bug in G4VSolid::ClipPoligon() to consider
  clipping related to a single axis.
- G4VoxelLimits.cc: cosmetics changes and debug printouts ...

February 26, 2002  G. Cosmo                geommng-V04-00-01
- G4GeometryManager.cc: fixed handling of ios manipulators and precision to reset
  to their original state in G4GeometryManager::ReportVoxelStats().
  Fixes problem report #343.

January 08, 2002  G. Cosmo                 geommng-V04-00-00
- G4AffineTransform.icc: fixed trivial compilation warning for gcc-2.95.2.
- Included latest cosmetics changes to TestAssemblyVolume/TstVADetectorConstruction.cc.

November 23, 2001  G. Cosmo                geommng-V03-02-03
- Initialise noNodes to 1 in G4SmartVoxelHeader::BuildNodes() in case
  computed nodes for smartless happen to be zero (J.Apostolakis).

November 08, 2001  G. Cosmo                geommng-V03-02-02
- Fixed comments for reference manual in G4TouchableHandle.hh.
 
October 26, 2001  G. Cosmo                 geommng-V03-02-01
- Improved printout in G4GeometryManager::ReportVoxelStats().

October 22, 2001  G. Cosmo                 geommng-V03-02-00
- Added definition of G4TouchableHandle (R.Chytracek)
- Added class G4SmartVoxelStat for statistics on geometry optimisation
  of volumes through voxelisation (courtesy of D.C.Williams).
- Modified G4GeometryManager to make use of G4SmartVoxelStat when run in
  verbose mode.

May 31, 2001  G. Cosmo                     geommng-V03-01-04
- Adopt explicit initialisation for 'minExtents' and 'maxExtents'
  in G4SmartVoxelHeader::BuildNodes(...), to allow porting on ObjectSpace STL.

May 23, 2001  G. Cosmo                     geommng-V03-01-03
- G4SmartVoxelHeader.cc: minor fix for removing pedantic warnings
  detected on Linux-g++ with ISO/ANSI setup.

May 03, 2001  G. Cosmo                     geommng-V03-01-02
- G4DrawVoxels.cc: migration to STL vector according to changes in
  graphics_reps module (greps-V03-01-01), now migrated as well.

April 27, 2001  G. Cosmo                   geommng-V03-01-01
- G4LogicalVolume.cc, G4SmartVoxelHeader.cc: fixed compilation warnings
  on HP-UX, concerning potential uninitialised vector elements.

April 20, 2001  G. Cosmo                   geommng-V03-01-00
- Migration to STL vector:
  o G4VSolid: migrated G4ThreeVectorList typedef.
  o G4SolidStore, G4LogicalVolumeStore, G4PhysicalVolumeStore: migrated
    inheritance from base collection of pointers.
  o G4LogicalVolume: migrated data member "fDaughters".
  o G4SmartVoxelHeader: migrated typedefs G4ProxyVector, G4NodeVector,
    G4VolumeNosVector and G4VolumeExtentVector.
  o G4SmartVoxelNode: migrated G4SliceVector typedef.

March 07, 2001  G. Cosmo                   geommng-V03-00-01
- G4PVPlacement.hh: corrected comments to constructor with G4RotationMatrix*
  as argument, to correspond to specifications in the User's Manual.
- G4AssemblyVolume.cc: corrected comments about unique PV identifiers
  (by R.Chytracek).

February 07, 2001  G. Cosmo                geommng-V03-00-00
- Introduced first implementation of G4AssemblyVolume, a helper class to
  combine several volumes together in an arbitrary way in the 3D space.
  Added files: G4AssemblyVolume[.hh.icc.cc], G4AssemblyTriplet[.hh.icc]
  (by R.Chytracek).
- Added unit test suite for G4AssemblyVolume class: TestAssemblyVolume
  (by R.Chytracek).

December 04, 2000  G. Cosmo
- Minor fix to private assignment operator.

November 20, 2000  G. Cosmo                geommng-V02-00-04
- Fixes to remove warnings from "-Wall -ansi -pedantic" g++ compiler options:
  o commented out variables declared and not used.
  o fixed declaration of variables used before being initialised.
  o fixed order of initialisation of member data in constructors.
  o fixed usage of unsigned-int (size_t) for array indeces.

November 16, 2000  V.Grichine              geommng-V02-00-03
- Fix in G4VSolid::CalculateClippedPoligonExtent(): removed assumption
  that pMin<pMax by eliminating "else" condition. (D.Williams)

November 9, 2000   G.Cosmo                 geommng-V02-00-02
- Included test directory containing "voxel" test by L.Grainac.

November 1, 2000   G.Cosmo                 geommng-V02-00-01
- QA code revision and cleanup (+fixes from CodeWizard filtering):
  o Added (private) declarations of copy constructor and assignment
    operator where needed.
  o Added "const" qualifier to accessor methods, wherever needed.
  o Added equality check on operator= where needed.
  o Made destructor "virtual" for classes having virtual methods,
    wherever missing.
  o Changed virtual functions to non-inline wherever's the case.
  o Added "inline" qualifier to methods' declarations.
  o Replaced usage of "do-loops" with "while-loops" in
    G4VoxelLimits::ClipToLimits().
  o General cosmetics

September 11, 2000   G.Cosmo               geommng-V02-00-00
- G4SolidStore.cc: fixed bug in destructor causing memory corruption at
  application exit when Boolean solids are involved (bug #154).

June 06, 2000   G.Cosmo                    geommng-V01-01-00
- G4DrawVoxels.hh: removed line '#define G4DrawVoxelsDebug' left in place
  accidentally in the code...

April 20, 2000   G. Cosmo
- Reorganised comments for the Software Reference Manual.
- Moved inlined definition to .icc files, where needed.
  Created: G4SmartVoxelHeader.icc, G4SmartVoxelNode.icc,
           G4SmartVoxelProxy.icc, G4VoxelLimits.icc.

April 11, 2000   J. Allison
- Made virtual G4VisExtent G4VSolid::GetExtent() non-pure and implemented
  a default in terms of CalculateExtent.

January 19, 2000  G. Cosmo                 geommng-V01-00-00

- Syncronized file versioning with HEAD (several CVS headers changed
  due to the recent migration for ISO C++)

January 19, 2000  J. Allison

- G4DrawVoxels.cc: assured GetSlice(slice_no) is called for
  slice_no < no_slices.

November 30, 1999  G. Cosmo                geommng-V00-01-01a
- G4DrawVoxels.cc:
  Fixed initialization of (const G4VPhysicalVolume*) in method
  GetAbsoluteTransformation(). Fix needed for NT/VC++ compiler.

November 09, 1999  J. Apostolakis          geommng-V00-01-01
- G4VPhysicalVolume:
   i) Made G4RotationMatrix G4VPhysicalVolume::GetObjectRotation() const
      non-inline and moved it to source file from inline file.
  ii) Added GetObjectRotationValue() method.
 iii) Minimal changes of comments for Software Ref. Manual in header file

  [ Change i) caused problem with HP aCC compiler A.01.19.  Atlas 
     was patching the code to try to get around this, but this 
     resolution is much better ] 

March 17, 1999  J. Apostolakis             geommng-01-00-02
- G4AffineTransform.icc:  
  Corrected a typo in InverseProduct (rzy->ryz) that caused the incorrect 
  calculation of a compound transformation (if tf1.tz*tf2.ryz != 0).
  This problem was seen in ATLAS code.
