# Category geom-bool History

See `CONTRIBUTING.rst` for details of **required** info/format for each entry,
which **must** added in reverse chronological order (newest at the top).
It must **not** be used as a substitute for writing good git commit messages!

------------------------------------------------------------------------------

## 2025-11-12 Gabriele Cosmo (geom-bool-V11-03-02)
- Fixed potential thread-safety issue in GetCubicVolume() and GetSurfaceArea()
  on Boolean solids in case those functions are called from worker threads.

## 2025-09-15 Gabriele Cosmo (geom-bool-V11-03-01)
- Reorganised and enriched comments in headers to follow Doxygen style.
- Removed declared but not implemented methods in G4MultiUnion and moved
  inline implementations to .icc file.
- Removed declared but not implemented method in G4ScaledSolid.

## 2025-08-22 Gabriele Cosmo (geom-bool-V11-03-00)
- Applied clang-tidy fixes: basic, readability-braces-around-statements,
  readability-else-after-return.

## 2025-03-20 Evgueni Tcherniaev (geom-bool-V11-03-01)
- G4MultiUnion: some optimisation
  o GetSurfaceArea(): used G4QuickRand()
  o GetLocalPoint(), GetLocalVector(), GetGlobalPoint(), GetGlobalVector():
    direct usage of the transformation matrix elements

## 2025-03-13 Evgueni Tcherniaev (geom-bool-V11-03-00)
- G4MultiUnion: fixed GetSurfaceArea()

## 2024-07-26 Evgueni Tcherniaev (geom-bool-V11-02-03)
- G4MultiUnion::GetCubicVolume(): used EstimateCubicVolume().
- G4BooleanSolid::SetCubVolStatistics(), G4BooleanSolid::SetCubVolEpsilon():
  added check for G4MultiUnion to avoid memory corruption.

## 2024-06-04 Evgueni Tcherniaev (geom-bool-V11-02-02)
- G4BooleanSolid::SetCubVolStatistics(st), G4BooleanSolid::SetCubVolEpsilon(ep):
  propagate parameter to all constituents.
- G4UnionSolid::GetCubicVolume(), G4SubtractionSolid::GetCubicVolume():
  limit calculations with construction of temporary G4IntersectionSolid by 10 constituents.

## 2024-05-29 Evgueni Tcherniaev (geom-bool-V11-02-01)
- Added new methods GetNumOfConstituents() and IsFaceted().

## 2023-12-22 Stewart Boogert (geom-bool-V11-02-00)
- Added extra external processor method to process solid. Added to void using G4Polyhedron 
  under any circumstances (floating point math as in G4Polyhedron is almost always going to
  fail)

## 2023-10-28 Stewart Boogert (geom-bool-V11-01-05)
- Fix problem with downcast in external boolean processor, could result incorrect nullptr

## 2023-09-14 Gabriele Cosmo, Evgueni Tcherniaev (geom-bool-V11-01-04)
- Define distinct statistics value in G4BooleanSolid for area and cubic volume.
- Reduce internal statistics for calculation of cubic volume in G4UnionSolid
  and G4SubtractionSolid.

## 2023-05-10 Gabriele Cosmo (geom-bool-V11-01-03)
- Applied clang-tidy fixes (readability, modernization, performance, ...).

## 2023-03-22 Gabriele Cosmo (geom-bool-V11-01-02)
- Minor code formatting. No functional changes.

## 2023-03-21 Stewart Boogert (geom-bool-V11-01-01)
- Added external boolean processor interface.

## 2022-12-20 Ivana Hrivnacova (geom-bool-V11-01-00)
- Fixed hang-out in G4MultiUnion, caused by oveflow of 'size-1' when 'size' value is zero
  after changing G4int type to size_t.

## 2022-11-10 Gabriele Cosmo (geom-bool-V11-00-07)
- Fixed compilation warnings for implicit type conversions on macOS/XCode 14.1.

## 2022-10-27 Evgueni Tcherniaev (geom-bool-V11-00-06)
- G4SubtractionSolid::GetCubicVolume(): Fix problem of non-zero volume for
  null resulting objects. 

## 2022-05-04 Gabriele Cosmo (geom-bool-V11-00-05)
- Minor cleanup in headers and G4UnionSolid constructors.

## 2022-04-29 Gabriele Cosmo (geom-bool-V11-00-04)
- G4UnionSolid: added missing data initialisation in copy-ctr and operator=().

## 2022-04-05 Gabriele Cosmo (geom-bool-V11-00-03)
- G4UnionSolid: add surface tolerance in Inside(p) for check on Z.
  Minor optimisation in caching half-tolerance.

## 2022-01-19 Evgueni Tcherniaev (geom-bool-V11-00-02)
- G4DisplacedSolid: added GetCubicVolume(), GetSurfaceArea()

## 2022-01-10 Gabriele Cosmo (geom-bool-V11-00-01)
- Added alternative signature for AddNode() taking a pointer to solid.
  Added 'const' qualification to transformation passed as argument.
  Addressing problem report #2457.

## 2021-12-10 Ben Morgan (geom-bool-V11-00-00)
- Change to new Markdown History format

---

# History entries prior to 11.0

October 12, 2021 G.Cosmo geom-bool-V10-07-03
- In G4BooleanSolid, use G4RecursiveMutex in place of G4Mutex in GetPolyhedron()
  to avoid potential deadlocks in recursive Boolean operations.
  Courtesy of S.Boogert (London Univ.).

May 6, 2021 J.Apostolakis geom-bool-V10-07-02
- Revised GetCubicVolume of UnionSolid and SubtractionSolid to use cubic volume
  of constituent volume(s) and the intersection solid.
  Test cases show the potential for improvement: factors of 40-3000.
  Cases with small overlap will improve most. Not all cases will improve. 
  Need to monitor cpu cost in most difficult cases: 
   - Union now   involves 3 calculations (a, b, a n b) - likely 2x cost. 
   - Subtraction involves 2 calculations (a, a n b) -  1.5x cost.

March 30, 2021 B.Morgan geom-bool-V10-07-01
- Migrate sources.cmake to modular build API

January 5, 2021 I.Hrivnacova, E.Tcherniaev  geom-bool-V10-07-00
- Added protection against using invalid normal
  in G4ScaledSolid::DistanceToOut(p,v, ...)

December 10, 2019 B.Morgan               geom-bool-V10-06-00
- Cleanup CMake build, removing obsolete granular library options and
  explicit include_directories.

 November 26, 2019 G.Cosmo               geom-bool-V10-05-04
 - G4MultiUnion: fixed cases of implicit type conversions from size_t to G4int.

 September 14, 2019 E.Tcherniaev         geom-bool-V10-05-03
 - G4BooleanSolid::GetPointOnSurface(): Use G4QuickRand(), reduced
   max number of tries to generate a point to 100k.

 September 2, 2019 G.Cosmo               geom-bool-V10-05-02
 - Fixed defect in G4ScaledSolid detected by Coverity.

 August 22, 2019 G.Cosmo                 geom-bool-V10-05-01
 - Use pre-increment wherever possible.

 August 16, 2019 G.Cosmo                 geom-bool-V10-05-00
 - Implemented minor c++11 revision: nullptr, auto, inline data
   initialisation...

 October 4, 2018 E.Tcherniaev            geom-bool-V10-04-08
 - G4ScaledSolid: return back using EstimateSurfaceArea() from G4VSolid,
   as it was originally, but now adopting the more precise algorithm
   implemented in G4VSolid.

 October 4, 2018 E.Tcherniaev            geom-bool-V10-04-07
 - G4ScaledSolid: improved approximated computation for surface area.

 October 3, 2018 E.Tcherniaev            geom-bool-V10-04-06, 05
 - Minor optimisations to G4SubtractionSolid and G4IntersectionSolid
   for use of early returns.
 - G4ScaledSolid: implemented approximated computation for surface
   area and cubic volume.

 June 1, 2018 G. Cosmo                   geom-bool-V10-04-04
 - G4MultiUnion: added protection for normal initialisation in
   DistanceToOutVoxels(). (M.Gheata)
   Minor optimisation in DistanceToOut(p,v,..).

 April 24, 2018 E. Tcherniaev            geom-bool-V10-04-03
 - G4UnionSolid: define simple bounding-box and make use of early returns
   in Inside() for points laying outside.

 April 11, 2018 E. Tcherniaev            geom-bool-V10-04-02
 - G4BooleanSolid: Use -1 instead of 0 as default initialisation value
   for area and capacity, so to distinguish cases when values are zero
   referring to NULL Boolean constructs.

 April 11, 2018 G. Cosmo                 geom-bool-V10-04-01
 - G4BooleanSolid: enhanced warning message for the case of an invalid
   (NULL) Boolean construct in GetPointOnSurface() and StackPolyhedron().
 - Replaced USOLIDS_LIBRARIES with VECGEOM_LIBRARIES in sources.cmake.

 February 28, 2018 E. Tcherniaev         geom-bool-V10-04-00
 - Improved contruction of G4DiplaceSolid to combine transformations for
   nested displaced types.

 June 13, 2017 J. Allison
 - G4BooleanSolid.cc, G4DisplacedSolid.cc, G4ScaledSolid.cc:
   Added protection and a warning message in the case of a null
   polyhedron pointer.

 May 24, 2017 G. Cosmo                   geom-bool-V10-03-04
 - Renamed ambiguous name Extent() in all shapes to BoundingLimits().
   Change required in order to avoid signature conflict with VecGeom in
   G4U* wrappers. Requires tag geommng-V10-03-16.

 May 15, 2017 G. Cosmo                   geom-bool-V10-03-03
 - Fixed minor Coverity defects to G4MultiUnion.

 April 17, 2017 G. Cosmo                 geom-bool-V10-03-02
 - Added G4MultiUnion class, importing original implementation for a
   multiple-union structure from the USolids library.
   Removed no longer necessary wrapper G4UMultiUnion.
   Requires coworking tags in geometry solids and persistency/gdml.

 March 16, 2017 E. Tcherniaev            geom-bool-V10-03-01
 - Revised SurfaceNormal() in G4UnionSolid, to correctly return average
   normal if point is on common surface.

 February 2, 2017 G. Cosmo               geom-bool-V10-03-00
 - Return normal from solid being subtracted, in case point is located
   outside in G4SubtractionSolid::SurfaceNormal().
 - Code formatting and minor cleanup in G4IntersectionSolid.

 November 4, 2016 E. Tcherniaev          geom-bool-V10-02-11
 - Implemented Extent() method for all shapes/constructs and use it
   in CalculateExtent().

 August 17, 2016 G. Cosmo                geom-bool-V10-02-10
 - G4SubtractionSolid: directly return previously computed distance in
   DistanceToIn(p,v) if no progress is made (zero step).

 June 28, 2016 E. Tcherniaev             geom-bool-V10-02-09
 - Removed tolerance argument to call to G4BoundingEnvelope in
   G4ScaledSolid::CalculateExtent().
   Coworks with tag "geommng-V10-02-14".

 June 6, 2016 E. Tcherniaev              geom-bool-V10-02-08
 - Reimplemented CalculateExtent() in G4ScaledSolid to use new class
   G4BoundingEnvelope. Use accessors in implementation.

 June 1, 2016 G. Cosmo                   geom-bool-V10-02-07
 - Corrected treatment of polyhedron for G4DiplacedSolid and G4ScaledSolid
   to avoid thread contention.
 - Added warning in G4BooleanSolid::GetPointOnSurface() in case of non
   convergence after fixed number of trials.

 May 27, 2016 G. Cosmo                   geom-bool-V10-02-06
 - Fixed Coverity defects for uninitialised data in G4BooleanSolid.

 May 26, 2016 E. Tcherniaev
 - Replaced while loop for for-loop in G4BooleanSolid::GetPointOnSurface().

 May 20, 2016 G. Cosmo                   geom-bool-V10-02-05
 - Moved accessors and modifiers in UMultiUnion wrapper to be not inlined.
   Required modification in order to allow correct dispatching to VecGeom
   types.

 May 17, 2016 E. Tcherniaev              geom-bool-V10-02-04
 - Boosted computation of GetPointOnSurface() for G4BooleanSolid;
   reimplemented algorithm, using cached list of primitives.

 May 13, 2016 G.Cosmo                    geom-bool-V10-02-03
 - Fixed GetPolyhedron() in G4ScaledSolid and G4DisplacedSolid for MT.

 May 12, 2016 E.Tcherniaev               geom-bool-V10-02-02
 - Use transformations for normals from G4ScaleTransform in G4ScaledSolid.

 March 16, 2016 G.Cosmo                  geom-bool-V10-02-01
 - Added new class G4ScaledSolid providing ability to scale dimensions of
   a shape in X, Y or Z.
   Requires tag "geommng-V10-02-00".

 February 8, 2016 G.Cosmo                geom-bool-V10-02-00
 - Minor optimisation in Inside(p) for G4UnionSolid and G4SubtractionSolid.

 October 7, 2015 G.Cosmo                 geom-bool-V10-01-02
 - Protected compilation of USolid wrappers with G4GEOM_USE_USOLIDS flag.

 August 13, 2015  G.Cosmo                geom-bool-V10-01-01
 - Checked for potential never-ending loops. Replaced while-do loop with
   bounded for-loop in G4IntersectionSolid::DistanceToIn(p,v).

 March 3, 2015  G.Cosmo                  geom-bool-V10-01-00
 - Use accessors x(), y() and z() from UVector3, instead of directly accessing
   its data-members. Co-work with tag "geom-usolids-V10-01-09".

 November 7, 2014  G.Cosmo               geom-bool-V10-00-09
 - Fixed Coverity defects in G4UMultiUnion::CreatePolyhedron() for
   memory leaks.

 October 3, 2014  G.Cosmo                geom-bool-V10-00-08
 - Avoid polyhedron deletion (and therefore mutexing) in CreatePolyhedron
   for G4DisplacedSolid, as not necessary.

 September 25, 2014  T.Nikitina          geom-bool-V10-00-07
 - Additional correction to G4UMultiUnion::CreatePolyhedron(), to take into
   account possible displacement of first component in the structure and have
   it visualised correctly.

 September 18, 2014  T.Nikitina          geom-bool-V10-00-06
 - Corrected implementation of CreatePolyhedron() in G4UMultiUnion wrapper.

 September 1, 2014  G.Cosmo              geom-bool-V10-00-05
 - Fixed use of polyhedron pointer, to avoid race condition in MT
   when parameterised volumes are visualised.

 Jul 18, 2014  G.Cosmo                   geom-bool-V10-00-04
 - G4UMultiUnion: correction in destructor to avoid deletion of polyhedron,
   as not owned by the structure.
   Corrected initialisation of base class name to adopt string provided as
   input parameter instead of hard-coded name.
   Adapted implementation of GetTransformation() to API correction in
   UMultiUnion. Requires co-working tag "geom-usolids-V10-00-12" with
   'usolids' module.

 Jul 04, 2014  G.Cosmo                   geom-bool-V10-00-03
 - Avoid leak in G4UMultiUnion::AddNode() for transformations being passed,
   now that UMultiUnion is locally caching them.

 Jul 01, 2014  G.Cosmo                   geom-bool-V10-00-02
 - Fixed assignment operator signature in G4UMultiUnion wrapper.

 Jun 20, 2014  G.Cosmo                   geom-bool-V10-00-01
 - Correction to G4MultiUnion::AddNode() for treatment of transformations.

 May 23, 2014  G.Cosmo                   geom-bool-V10-00-00
 - Enabled G4MultiUnion wrapper.

 November 13, 2013  G.Cosmo              geom-bool-V09-06-05, 04
 - Removed G4MultiUnion and related wrapper, as not yet ready for release.
   Returning to tag "geom-bool-V09-06-02".

 November 07, 2013  G.Cosmo              geom-bool-V09-06-03
 - Moved G4UMultiUnion wrapper from usolids module. Added G4MultiUnion typedef.

 November 06, 2013  G.Cosmo              geom-bool-V09-06-02
  - Added wrapper for UMultiUnion from USolids module.

 December 14, 2012  G.Cosmo              geom-bool-V09-06-01
  - Restored return distance in G4SubtractionSolid.
  - Restored SVN id headers.

 December 02, 2012  J.Allison            geom-bool-V09-06-00
  - Removed NURBS.

 November, 30, 2012  J.Apostolakis
  - G4SubtractionSolid: improved SurfaceNormal() method, by caching the
    result of the calls to fPtrSolidA->Inside() and fPtrSolidB->Inside().
    Corrected debug printout to say 'Point p is *out*side' not inside.
    NOTE: further improvement can be made by creating new method
            Inside( point, &resultInsideA, &resultInsideB );
          which can be called by a 'bare' Inside( point ) method.

 June 12, 2012  G.Cosmo                   geom-bool-V09-05-02
  - Explicitly use inclusion of headers for system of units and physical
    constants, in plan to remove implicit inclusion from globals.hh.

 May 9, 2012  G.Cosmo                     geom-bool-V09-05-01
  - G4SubtractionSolid: refined protection for potential cases of
    infinite loop in DistanceToIn(p,v); return computed distance instead
    of zero and provide more descriptive information when issuing warning.

 April 6, 2012  M.Kelsey                  geom-bool-V09-05-00
  - G4BooleanSolid: added protected data 'fAreaRatio' and related method
    GetAreaRatio() which store the ratio of surface areas of SolidA to
    SolidA+SolidB. The ratio is used in GetPointOnSurface() to better
    approximate uniform coverage. Uniformity cannot be guaranteed in all
    cases and when constituent solids have shared surfaces.

 August 25, 2011  G.Cosmo                 geom-bool-V09-04-03
  - Corrected printout stream precision settings.

 August 25, 2011  G.Cosmo                 geom-bool-V09-04-02
  - Migrated to new G4Exception scheme for warnings and errors.
  - Defined scheme for warnings/errors coding:
    + 1xxx for warnings, 0xxx for errors.
    Code numbering:
    + 0001: not supported or implemented features;
    + 0002: invalid setup/construct;
    + 0003: invalid run condition;
    + 1001: incorrect setup; automatically adapted.
    + 1002: notification.

 July 22, 2011  T.Nikitina                geom-bool-V09-04-01
  - Corrected protection in G4SubtractionSolid::DistanceToIn(p,v) introduced
    in previous tag and relaxed to not cause event abortion.

 May 27, 2011  T.Nikitina                 geom-bool-V09-04-00
  - Added protection for potential cases of infinite loop in DistanceToIn(p,v)
    and related error message with event abortion.

 October 19, 2010  G.Cosmo                geom-bool-V09-03-03
  - Implemented Clone() virtual method for all solids, returning a pointer
    to a dynamically allocated copy of the solid. To be used by Geant4-MT.

 September 22, 2010  G.Cosmo              geom-bool-V09-03-02
  - Implemented copy-constructor and assignment operator for concrete
    solids classes to facilitate conversion to Geant4-MT.

 July 7, 2010  G.Cosmo                    geom-bool-V09-03-01
  - Simplified logic in G4UnionSolid::Inside() to exclude obvious
    conditional cases.

 May 11, 2010  J.Allison                  geom-bool-V09-03-00
  - Introduced recursive algorithm in CreatePolyhedron(): it uses
    HepPolyhedronProcessor from 'graphics_reps', which tries small shifts
    in an attempt to avoid numerical problems in the calculation of the
    polyhedron in BooleanProcessor. Recursion allows HepPolyhedronProcessor
    to try all permutations, also for Booleans of Booleans.
    Helps in reducing the number of cases of "Error in Boolean processor" for
    visualization, but still some stubborn cases are left.

 Oct 24, 2007  V.Grichine                 geom-bool-V09-00-00
  - Improved response of Inside() for G4SubtractionSolid and G4UnionSolid
    according to suggestion in problem report #979.

 May 18, 2007  G.Cosmo                    geom-bool-V08-03-00
  - Use kAngTolerance and kRadTolerance from G4GeometryTolerance class.
  - Updated unit tests.
  - Coworks with tag "global-V08-03-03".

 Nov 08, 2006  G.Cosmo                    geom-bool-V08-01-02
  - Fixed compilation problems on SUN-CC for changes in the last tag.
    Added inclusion of <sstream> header in G4IntersectionSolid.cc and
    G4UnionSolid.cc.

 Nov 06, 2006  J.Allison                  geom-bool-V08-01-01
  - G4IntersectionSolid, G4SubtractionSolid, G4UnionSolid:
    fixed CreatePolyhedron() for case of component that does
    not have a G4Polyhedron representation.
  - Added checks for point on boolean surface to unit tests
    testG4DisplacedSolid and testG4SubtractionSolid (V.Grichine).

 Oct 19, 2006  G.Cosmo                    geom-bool-V08-01-00
  - Added GetSurfaceArea() method, accessors and modifiers to base class
    G4BooleanSolid, implementing the caching mechanism as for volumes.

 May 03, 2006  V.Grichine                 geom-bool-V08-00-00
  - Fix in G4IntersectionSolid::CalculateExtent() for the correctly handling
    extent computation for nested intersections and always respect the rule
    pMax > pMin.

 Nov 09, 2005  G.Cosmo                    geom-bool-V07-01-01
  - Added fake default constructor for concrete solids types and relevant
    utility classes, for usage of direct object persistency.

 Sep 15, 2005  V.Grichine                 geom-bool-V07-01-00
  - Added concrete implementation for GetPointOnSurface() to
    G4BooleanSolid and G4DisplacedSolid.
  - Updated unit tests testG4DisplacedSolid and testG4IntersectionSolid.

 May 04, 2005  V.Grichine                 geom-bool-V07-00-03
  - Make the new implementation of Inside() with surface-normal for
    edges/vertices the deafult one.
    Removed G4NEW_SURF_NORMAL compilation flag.

 Mar 23, 2005  J.Allison                  geom-bool-V07-00-02
  - Added test for Number-Of-Rotation-Steps in GetPolyhedron()
    for G4DisplacedSolid and G4BooleanSolid. Requires tag "greps-V07-00-02".

 Mar 10, 2005  V.Grichine                 geom-bool-V07-00-01
  - Modified Inside(p) G4SubtractionSolid and G4UnionSolid, to fix
    inconsistency for non-zero sum of surface-normals.
    Available only through activation of G4NEW_SURF_NORMAL compilation flag.
  - Updated unit tests.

 Mar 03, 2005  J.Allison
  - Changed AddThis() to AddSolid() in the concrete implementations of
    DescribeYourselfTo(G4VGraphicsScene&) for all solids. Use the
    newly available CreatePolyhedron() for components of Boolean
    solids, instead of GetPolyhedron().

 Feb 22, 2005  V.Grichine                 geom-bool-V07-00-00
  - Fix in G4IntersectionSolid::DistanceToIn(p,v) to allow for correct
    simmetrical treatment of the solids' intersection. Algorithm reviewed
    as proposed by D.Bazzacco in problem report #723.
  - New unit test testBoolSurfaceInOut.cc for checking dIn-dOut and AB,
    BA booleans on surface.

 Oct 10, 2004  J.Allison                  geom-bool-V06-02-01
  - Added GetPolyhedron, a smart access function that creates a G4Polyhedron
    on request and stores for future access.  A null pointer means "not
    available".

 Sep 22, 2004   V.Grichine                geom-bool-V06-02-00
  - Added specific implementation for G4BooleanSolid::GetCubicVolume()
    to cache the computed value.
  - Moved inline methods for G4BooleanSolid to .icc file.

 May 07, 2004   G.Cosmo                   geom-bool-V06-01-00
  - Moved G4ReflectedSolid class to "management" module.
  - Moved G4ReflectionFactory class to "volumes" module.
  - Moved unit test for reflection to "volumes" module.
  - Coworks with tags: geommng-V06-01-00, geomvol-V06-01-00 and
                       geomdiv-V06-01-00.

 Feb 27, 2004   V.Grichine                geom-bool-V06-00-00
  - G4UnionSolid.cc, G4SubtractionSolid.cc: fix in debug printout for
    SurfaceNomal().

 Dec 01, 2003   G.Cosmo                   geom-bool-V05-02-04
  - G4ReflectedSolid.cc: fixed trivial leak in constructor.

 Nov 03, 2003   G.Cosmo                   geom-bool-V05-02-03
  - Code cleanup and headers inclusion review
    (replaced by forward declarations where necessary).

 Oct 28, 2003   G.Cosmo                   geom-bool-V05-02-02
  - Migration to new G4Exception scheme.

 Oct 28, 2003   J.Apostolakis
  - Modified test/GNUmakefile to delete un-necessary directories.
    It no longer refers to navigator (old volumes), but includes
    intercoms (for G4VVisManager).

 Oct  9, 2003   V.Grichine                geom-bool-V05-02-01
  - Fixes to default safety to zero in DistIn/Out(p) methods.
    Note: Using previous test GNUmakefile (to be corrected).

 Sep 30, 2003   G.Cosmo                   geom-bool-V05-02-00
  - Updated GNUmakefile for unit tests, according to new structure
    introduced in "geometry-V05-02-00".

 Jun 12, 2003   G.Cosmo                   geom-bool-V05-01-02
  - G4ReflectionFactory:
    o Made public accessors: GetConstituentLV(), GetReflectedLV(),
      IsConstituent() and IsReflected().
    o Added accessor GetReflectedVolumesMap() to access list of
      reflected volumes.

 May 22, 2003   G.Cosmo                   geom-bool-V05-01-01
  - Implementations for Set/GetScalePrecision() in G4ReflectionFactory
    missing! Now fixed.

 May 12, 2003   G.Cosmo                   geom-bool-V05-01-00
  - Added set/get methods for scale precision in G4ReflectionFactory.

 Mar 25, 2003   G.Cosmo                   geom-bool-V05-00-01
  - Fixed trivial strict pedantic warnings in G4ReflectedSolid.cc and
    G4ReflectionFactory.cc.
  - Minor fixes to unit tests.

 Jan 27, 2003   G.Cosmo                   geom-bool-V05-00-00
  - G4ReflectionFactory[.hh.cc] (courtesy of I.Hrivnacova):
    o Added set/get functions Set/GetVolumesNameExtension() for volume-name
      extension. By default now the factory assigns "_refl" postfix to name
      of reflected volumes.
    o Assumed less strict condition in the CheckScale() method, to avoid
      precision problems with imported rotation matrices.

 Oct 29  2002  Gabriele Cosmo       geom-bool-V04-01-01
  - Added method CleanTransformations() to G4DisplacedSolid and corrected
    implementation in destructor of G4BooleanSolid to not call for deletion
    of G4VSolid in the case where displacement is used.
    This fixes a problem noticed on Linux-g++ at application closeout for
    double deletion of a solid in such special case.

 Oct 28  2002  Gabriele Cosmo       geom-bool-V04-01-00
  - Added implementation of StreamInfo() to comply with new interface for
    G4VSolid in "geommng-V04-01-03".
  - Some cosmetic changes to code formatting.
  - Extended unit tests to include new user test-cases (V.Grichine).

 May 11  2002  Vladimir Grichine    geom-bool-V04-00-05
  - G4ReflectedSolid.cc: bounding-box like algorithm for CalculateExtent().

 Apr 16  2002  Vladimir Grichine    geom-bool-V04-00-04
  - G4ReflectedSolid.cc: enhanced algorithm for CalculateExtent(), now
    passing all basic unit tests.
  - Updated unit test for G4ReflectedSolid, testG4ReflectedSolid.cc

 Mar 26  2002  Vladimir Grichine    geom-bool-V04-00-03
  - G4ReflectedSolid.cc: modified implementation of CalculateExtent() to
    properly consider transformation of reflected extent.

 Feb 15  2002  Vladimir Grichine    geom-bool-V04-00-02
  - G4ReflectedSolid[.hh.cc]:
    o Defined new methods Set/GetTransform3D() and Set/GetDirectTransform3D()
      for defining/accessing the real reflected transformation
    o Moved methods for G4AffineTransform to protected.

 Feb 07  2002  Gabriele Cosmo       geom-bool-V04-00-01
  - G4ReflectionFactory.cc: fixed bug causing repetition of daughter volumes.

 Jan 10  2002  Gabriele Cosmo       geom-solid-bool-V04-00-00
  - Moved all verbosity mode warnings to G4BOOLDEBUG and commented exceptions.
  - Activated G4BOOLDEBUG mechanism in GNUmakefile.
  - Fixed unit tests.

 Nov 08  2001  Gabriele Cosmo       geom-solid-bool-V03-02-02
  - Fix for verbosity in G4ReflectionFactory.cc. Reduced of one level.

 Oct 18  2001  Gabriele Cosmo       geom-solid-bool-V03-02-01
  - Introduced first implementation of classes G4ReflectedSolid and
    G4ReflectionFactory for reflections of positioned volumes
    (courtesy of V.Grichine and I.Hrivnacova).
  - Fixed bug in G4ReflectedSolid::CreatePolyhedron().

 Aug 13  2001  Vladimir Grichine    geom-solid-bool-V03-02-00
  - Introduced G4BOOLDEBUG flag and replaced G4Exception statements with
    simple warnings to G4cerr for rare occurrences of anomalous conditions.

 May 30  2001  Vladimir Grichine    geom-solid-bool-V03-01-00
  - G4IntersectionSolid: fix in DistanceToIn(p,v) resolving bug observed
    in problem report #153.

 Mar 19  2001  Gabriele Cosmo       geom-solid-bool-V03-00-03

  - G4IntersectionSolid:
    o fix in CalculateExtent() for computation of pMin and pMax, to avoid
      assignment in case CalculateExtent() of one component solid fails.
    o fix in Inside() to return kOutside in case first component solid's
      Inside() returns kOutside.
  - G4UnionSolid:
    o fix in CalculateExtent() for computation of pMin and pMax: initialised
      local variables.

 Jan 31  2001  Gabriele Cosmo       geom-solid-bool-V03-00-02

  - Fix in G4UnionSolid::DistanceToOut(p,v,...) for assignment of
    argument *n. Previous fix was incomplete!

 Jan 23  2001  Gabriele Cosmo       geom-solid-bool-V03-00-01

  - Fixed wrong labels for G4Exception calls in G4UnionSolid.cc and
    G4SubtractionSolid.cc to identify the correct class.
    Fixes bug report #200.

 Jan 08  2001  Vladimir Grichine    geom-solid-bool-V03-00-00

  - Fix in G4UnionSolid::DistanceToOut(p,v,...) for assignment of
    argument *n to happen only if calcNorm is false.
    (courtesy of D.Williams)
  - Updated unit tests testG4IntersectionSolid.cc, testG4SubtractionSolid.cc
    and test/testG4UnionSolid.cc.

 Nov 22  2000  Vladimir Grichine    geom-solid-bool-V02-00-03

  - Added new set methods for matrix/vectors to G4DisplacedSolid:
      SetTransform(G4AffineTransform&),
      SetDirectTransform(G4AffineTransform&),
      SetFrameRotation(const G4RotationMatrix&),
      SetFrameTranslation(const G4ThreeVector&),
      SetObjectRotation(const G4RotationMatrix&),
      SetObjectTranslation(const G4ThreeVector&).

 Nov 20  2000  Gabriele Cosmo       geom-solid-bool-V02-00-02

  - 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.

 Nov 2   2000  Gabriele Cosmo       geom-solid-bool-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 Changed virtual functions to non-inline wherever's the case.

 Sep 13  2000  Vladimir Grichine    geom-solid-bool-V02-00-00

  - G4SubtractionSolid.cc: relaxed behavior in SurfaceNormal(p), where
    it is allowed for a point to be inside the solid. A message is thrown
    to cerr instead of a G4Exception.

 Jun 26  2000  Vladimir Grichine    geom-solid-bool-V01-01-03

  - Fixed bug in G4SubtractionSolid::DistanceToOut(p,v,...). validNorm
    flag was uncorrectly set to true. Fixes report #102.

 Jun 6   2000  John Apostolakis     geom-solid-bool-V01-01-02

  - Protecting the use of pointers validNorm and n, if calcNorm is false

 Jun 6   2000  John Allison         geom-solid-bool-V01-01-01

  - Re-enabled CreatePolyhedron() method from G4UnionSolid, G4IntersectionSolid
    and G4SubtractionSolid.  Coworks with greps-V01-01-04.

 May 26  2000  John Allison         geom-solid-bool-V01-01-00

  - Disabled CreatePolyhedron() method from G4UnionSolid, G4IntersectionSolid
    and G4SubtractionSolid. It now temporarly returns a NULL pointer.
    Visualisation of Boolean solids is therefore temporarly disabled, pending
    a definitive fix in graphics_reps.
    Files G4UnionSolid.cc, G4SubtractionSolid.cc and G4IntersectionSolid.cc
    are included in the branch-tag "boolean_nopoly_branch".

 Apr 27  2000  Gabriele Cosmo

  - Reorganised comments for the Software Reference Manual.
  - Added CVS headers and standard G4 header where missing.

 Apr 11  2000  John Allison

  - CreatePolyhedron implemented for BooleanSolids.
  - G4DisplacedSolid: reversed implementation of GetFrameRotation and
    GetObjectRotation, removing inappropriate invertion.
  - G4DisplacedSolid::GetConstituentMovedSolid() made const.

 Jan 19  2000	Gabriele Cosmo	    geom-solid-bool-V01-00-00

  - Syncronized file versions with HEAD (essentially CVS headers changes)
  - Fixed cases of G4std::min which were not migrated on the HEAD in files:
    G4UnionSolid.cc and G4IntersectionSolid.cc

 Nov 24  1999 			    geom-solid-bool-V00-01-05

  - Small fix in src/G4DisplacedSolid.cc to the return type
         (const G4AffineTransform --> G4AffineTransform)
    to conform with the specification of the class.

 Nov 19  1999                       geom-solid-bool-V00-01-04

  -  Fixes from Vladimir, and additional tests

 Nov 10  1999                       geom-solid-bool-V00-01-03b

  - Renamed  GetConstituentSolid to GetConstituentMovedSolid in G4DisplacedSolid
     to avoid clashing with method that gets the contituents of a G4BooleanSolid.

 Nov 10  1999                       geom-solid-bool-V00-01-03a

  - Tag with additional methods for Persistency

 Nov 10  1999                       geom-solid-bool-V00-01-03-cand

  New method: Get Object Rotation/Translation methods in Displaced Solid

 Nov  9  1999                       geom-solid-bool-V00-01-02-cand

  - Tag with additional methods for Visualisation

   G4DisplacedSolid,  G4BooleanSolid

      Added methods to access data members:
          Get Constituent Solid  (int) for Boolean   Solid
          Get Constituent Solid        for Displaced Solid
          Get Frame Rotation/Translation methods in Displaced Solid



  Dec  1  1998   John Apostolakis   geom-boolean-4-ja

    Code portability changes.

  Nov 27  1998   J.Apostolakis & V.Grichine   geom-boolean-3-vg

    Fixes agreed in code review were implemented.
