Geant4 LXR

Cross-Referencing   Geant4
Geant4/geometry/solids/specific/History

   # Category geom-specific 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!
   
   -------------------------------------------------------------------------------
   
   ## 2024-10-01 Evgueni Tcherniaev (geom-specific-V11-02-08)
  - G4GenericTrap: Fixed minor defect reported by Coverity
  
  ## 2024-07-18 Alvaro Tolosa-Delgado (geom-specific-V11-02-07)
  - Remove internal state of G4TwistedTubs and G4VTwistedFaceted.
  
  ## 2024-07-10 Evgueni Tcherniaev (geom-specific-V11-02-06)
  - G4ExtrudedSolid: Fixed defects reported by Coverity
  
  ## 2024-07-08 Gabriele Cosmo (geom-specific-V11-02-05)
  - Fixed reported Coverity defect; in G4Voxelizer, use std::move instead of
    plain vector copy in methods BuildReduceVoxels(..), BuildReduceVoxels2(..),
    BuildBoundaries() and CreateMiniVoxels(..).
  
  ## 2024-05-29 Evgueni Tcherniaev (geom-specific-V11-02-04)
  - Added new methods GetNumOfConstituents() and IsFaceted().
  
  ## 2024-05-27 Evgueni Tcherniaev (geom-specific-V11-02-03)
  - Completely revised G4GeneriTrap, it addresses the problem report #2547
  
  ## 2024-05-26 Evgueni Tcherniaev (geom-specific-V11-02-02)
  - New testG4GenericTrap.cc
  
  ## 2024-04-02 Gabriele Cosmo (geom-specific-V11-02-01)
  - Applied trivial clang-tidy fixes to classes, i.e. use of 'override' and
    'default' keywords.
  
  ## 2024-02-01 Gabriele Cosmo (geom-specific-V11-02-00)
  - Use std::size_t for array sizes in G4PolyhedraSide and G4PolyPhiFace.
  
  ## 2023-07-10 Evgueni Tcherniaev (geom-specific-V11-01-06)
  - Fixed bounding box calculation in G4VTwistedFaceted::BoundingLimits().
  
  ## 2023-06-16 Stephan Hageboeck (geom-specific-V11-01-05)
  - Fix an uninitialised value in G4VCSGfaceted::SurfaceNormal().
  
  ## 2023-06-12 Gabriele Cosmo (geom-specific-V11-01-04)
  - Use const iterator in G4Voxelizer::GetPointVoxel().
  - Fixed use of index in G4Tet::GetPointOnSurface().
  
  ## 2023-05-10 Gabriele Cosmo (geom-specific-V11-01-03)
  - Applied clang-tidy fixes (readability, modernization, performance, ...).
  
  ## 2023-03-20 Gabriele Cosmo (geom-specific-V11-01-02)
  - Fixed more potential uninitialised values in G4PolyconeSide,
    G4SolidExtentList and G4VTwistSurface.
  
  ## 2023-03-13 Gabriele Cosmo (geom-specific-V11-01-01)
  - Fixed potential uninitialised value for boundary type in
    G4VTwistSurface::GetBoundaryAtPZ().
  
  ## 2023-01-02 Evgueni Tcherniaev (geom-specific-V11-01-00)
  - G4QuadrangularFacet: Fixed warning message
  
  ## 2022-11-10 Gabriele Cosmo (geom-specific-V11-00-10)
  - Fixed compilation warnings for implicit type conversions on macOS/XCode 14.1.
  
  ## 2022-10-05 Gabriele Cosmo (geom-specific-V11-00-09)
  - Fixed compilation warnings in Intel/icx compiler for variables set
    but never used.
  
  ## 2022-04-03 Evgueni Tcherniaev (geom-specific-V11-00-08)
  - G4GenericTrap.cc, G4UGenericTrap.cc, G4UExtrudedSolid.cc,
    G4TessellatedSolid.cc, G4TessellatedSolid.cc:
    revision of CreatePolyhedron()
  
  ## 2022-02-04 Evgueni Tcherniaev (geom-specific-V11-00-07)
  - G4VTwistedFaceted: used numerical evaluation of a single
    integral to calculate lateral face surface area
  
  ## 2022-02-01 Evgueni Tcherniaev (geom-specific-V11-00-06)
  - G4ExtrudedSolid, G4UExtrudedSolid: added default values for
    parameters in the constructor with two z-sections
  - G4ExtrudedSolid::ZSection, G4UExtrudedSolid::ZSection:
    added default constructor
  
  ## 2022-01-26 Evgueni Tcherniaev (geom-specific-V11-00-05)
  - G4GenericTrap::GetCubicVolume(): calculation of volume
    using analytical expression; removed private function
    GetFaceCubicVolume();
  - G4GenericTrap::GetSurfaceArea(): improved calculation
    of the area of lateral faces; private functions
    GetFaceSurfaceArea(), GetTwistedFaceSurfaceArea()
    replaced with private function GetLateralFaceArea()
  
  ## 2022-01-21 Evgueni Tcherniaev (geom-specific-V11-00-04)
  - G4Ellipsoid::LateralSurfaceArea(): Enhanced calculation of
    the lateral surface area
  
  ## 2022-01-11 Evgueni Tcherniaev (geom-specific-V11-00-03)
  - G4VTwistedFaceted: fCubicVolume, fSurfaceArea made protected,
   GetCubicVolume(), GetSurfaceArea() moved to *.cc
 - G4VTwistedFaceted, G4TwistedBox, G4TwistedTrd: optimized
   calculation of volume and surface area
 
 ## 2022-01-06 Evgueni Tcherniaev (geom-specific-V11-00-02)
 - G4TwistedTubs: Implemented GetSurfaceArea() based on
   analytical expressions; added private functions
   GetLateralArea() and GetPhiCutArea()
 
 ## 2021-12-19 Evgueni Tcherniaev (geom-specific-V11-00-01)
 - G4Hype: Used analytical expression in GetCubicVolume()
   and GetSurfaceArea()
 
 ## 2021-12-10 Ben Morgan (geom-specific-V11-00-00)
 - Change to new Markdown History format
 
 ---
 
 # History entries prior to 11.0
 
 03-December-2021 E.Tcherniaev      (geom-specific-V10-07-13)
 - G4TwistedTubs: Accurate calculation of the bounding box in
   BoundingLimits() and GetExtent(), fixing measured performance
   penalty. Addressing problem report #2450.
 - G4TwistedTubs, G4VTwistedFaceted: Fixed GetCubicVolume()
 
 15-October-2021 E.Tcherniaev       (geom-specific-V10-07-12)
 - G4Tet, G4UTet: Added SetBoundingLimits()
 
 06-October-2021 E.Tcherniaev       (geom-specific-V10-07-11)
 - G4Tet: some changes in calculation of bounding box
 - G4UTet: added CheckDegeneracy() and SetVertices()
 
 27-September-2021 E.Tcherniaev     (geom-specific-V10-07-10)
 - Added degeneracyFlag to the list of parameters of G4Tet::SetVertices(),
   it addresses first part of the problem report #2427
 
 24-September-2021 E.Tcherniaev     (geom-specific-V10-07-09)
 - Implemented G4TesselatedSolid::GetFacetIndex(p)
 
 10-September-2021 E.Tcherniaev     (geom-specific-V10-07-08)
 - Implemented G4TesselatedSolid::CheckStructure()
 - Optimisation in G4TessellatedSolid::SetExtremeFacets():
   shuffle of vertices and checking of six extreme vertices
 
 21-July-2021 E.Tcherniaev          (geom-specific-V10-07-07)
 - More accurate calculation of distance from point to triangle
   in G4TriangularFacet, it addresses problem report #2401
 
 25-June-2021 G.Cosmo               (geom-specific-V10-07-06)
 - Added missing accessor in G4UTet.
 
 12-May-2021 E.Tcherniaev           (geom-specific-V10-07-05)
 - Reimplemented CreatePolyhedron() in
   G4Polyhedra, G4Polycone, G4GenericPolycone,
   G4UPolyhedra, G4UPolycone, G4UGenericPolycone
 
 30-April-2021 G.Cosmo              (geom-specific-V10-07-04)
 - Fixed use of conversion factor in G4UPolyhedra wrapper for "generic"
   polyhedra constructs.
 
 19-April-2021 E.Tcherniaev         (geom-specific-V10-07-03)
 - G4Polyhedra, G4Polycone: Fix calculation of endPhi for the case
   of negative phiStart, it addresses also problem report #2362
 
 30-March-2021 B.Morgan             (geom-specific-V10-07-02)
 - Migrate sources.cmake to modular build API
 
 18-March-2021 E.Tcherniaev         (geom-specific-V10-07-01)
 - Fix calculation of bounding box position in G4Voxelizer::BuildVoxelLimits(),
   it addresses problem report #2301
 
 13-January-2021 G.Cosmo            (geom-specific-V10-07-00)
 - Reduce cases of bad speculation in G4PolyhedraSide::Inside() and
   G4PolyPhiFace::InsideEdges(), based on report in profiling analysis
   by G.Amadio.
 
 30-October-2020 E.Tcherniaev       (geom-specific-V10-06-10)
 - G4Polycone: Revised GetPointOnSurface();
   Added protected auxiliary method SetSurfaceElements();
   Removed GetPointOnCone(), GetPointOnTubs(), GetPointOnCut(), GetPointOnRing();
 - G4GenericPolycone: Revised GetPointOnSurface();
   Added protected auxiliary method SetSurfaceElements();
 - G4Polyhedra: Revised GetPointOnSurface();
   Added protected auxiliary method SetSurfaceElements();
   Removed GetPointOnPlane(), GetPointOnTriangle();
 
 01-October-2020 E.Tcherniaev       (geom-specific-V10-06-09)
 - G4Polycone, G4GenericPolycone, G4Polyhedra:
   implemented GetSurfaceArea(), GetCubicVolume().
 
 May  21, 2020 Guilherme Lima       (geom-specific-V10-06-08)
 ----------------------------
 - Fix constructor signatures in G4UExtrudedSolid wrappers, to match those in G4 version.
   There were missing const and reference qualifiers in non-POD parameters.
 
 30-April-2020 G.Cosmo              (geom-specific-V10-06-07)
 - Adopt new convention for location of headers in VecGeom for all wrappers.
 
 09-April-2020 E.Tcherniaev         (geom-specific-V10-06-06)
 - Added G4GenericTrap::GetTwistedFaceSurfaceArea().
 - testG4GenericTrap.cc: fixed test for calculation of surface area.
 - testG4ExtrudedSolid.cc: fixed assert statements for cases where
   point flys along the surface (DistanceToIn() returns kInfinity).
 
 17-January-2020 E.Tcherniaev       (geom-specific-V10-06-05)
 - Implemented G4Tet::SetVertices(), it addresses request made
   at Geant4 Technical Forum.
 
 14-January-2020 Gabriele Cosmo     (geom-specific-V10-06-04)
 - Added protection in G4VFacet header for double definition of global
   symbols from Windows Kits code.
 
 08-January-2020 E.Tcherniaev       (geom-specific-V10-06-03)
 - Complete revision of G4Tet, speed up, new testG4Tet.cc.
   It also fixes issues spotted by new unit test.
 
 16-December-2019 E.Tcherniaev      (geom-specific-V10-06-02)
 - Complete revision of G4Ellipsoid, it fixes issues with former
   implementation, in particular it addresses problem report #2206.
   30%-70% speed-up in all main methods.
 
 11-December-2019 B.Morgan          (geom-specific-V10-06-01)
 - Cleanup CMake build, removing obsolete granular library options and
   explicit include_directories.
 
 10-December-2019 G.Cosmo           (geom-specific-V10-06-00)
 - Re-established parameterisation mechanism for G4Tet and G4UTet which was
   removed by mistake. Addressing problem report #2209.
 
 26-November-2019 G.Cosmo           (geom-specific-V10-05-21)
 - Fixed cases of implicit type conversions from size_t to G4int.
 
 05-November-2019 E.Tcherniaev      (geom-specific-V10-05-20)
 - G4TesselatedSolid.cc: fixed minor Coverity defect (uninitialized array)
 
 07-October-2019 E.Tcherniaev       (geom-specific-V10-05-19)
 - G4TesselatedSolid.cc: fixed minor Coverity defect
 
 16-September-2019 G.Cosmo          (geom-specific-V10-05-18)
 - Rationalise header inclusions for faceted solids.
 
 06-September-2019 G.Cosmo          (geom-specific-V10-05-17)
 - Removed unnecessary forward declaration in G4VFacet header.
 
 29-August-2019 G.Cosmo             (geom-specific-V10-05-16)
 - Minor c++11 revision and headers cleanup. Code formatting.
 - Use pre-increment wherever possible.
 
 19-August-2019 G.Lima              (geom-specific-V10-05-15)
 - G4ExtrudedSolid: fixed a bug in DistanceToOut(), affecting extruded solids
   defined off-center along the z-axis.
 
 19-August-2019 G.Cosmo             (geom-specific-V10-05-14)
 - G4GenericTrap: fixed compilation warnings for variable shadowing on clang-8.
 
 13-August-2019 G.Cosmo             (geom-specific-V10-05-13)
 - Enabled wrappers for VecGeom implementation of G4EllipticalTube,
   G4EllipticalCone and G4Ellipsoid.
 
 10-July-2019 E.Tcherniaev          (geom-specific-V10-05-12)
 - Fixed G4UExtrudedSolid::CreatePolyhedron().
   Addressing visualization part of the problem report #2171.
 
 04-July-2019 G.Cosmo               (geom-specific-V10-05-11)
 - Avoid defining kCarTolerance as 'static const' in G4VFacet.
   Addressing problem report #2172.
 
 11-June-2019 E.Tcherniaev          (geom-specific-V10-05-10)
 - Use GetVertices() instead of GetParametersList() in the wrapper G4UTet.
 
 29-May-2019 G.Cosmo                (geom-specific-V10-05-09)
 - Fixed minor Coverity defects.
 
 20-May-2019 G.Cosmo                (geom-specific-V10-05-08)
 - Defined move constructor and move assignment operator for G4TriangularFacet.
 
 14-May-2019 B.Morgan               (geom-specific-V10-05-07)
 - Add inclusion of new G4GeomTypes.hh header to those headers allowing
   VecGeom replacement.
 - See also geommng-10-05-05
 
 23-April-2019  G.Cosmo             (geom-specific-V10-05-06)
 - Modified G4PolyconeSide and G4PolyhedraSide to use only trivial types for
   MT splitted data in G4PlSideData and G4PhSideData respectively.
 
 16-April-2019  G.Cosmo             (geom-specific-V10-05-05)
 - Protected check in G4TwistTubsSide::DistanceToPlane() withing debug flag.
 
 4-April-2019  G.Cosmo              (geom-specific-V10-05-04)
 - Enabled wrapper for VecGeom implementation of G4GenericPolycone.
 
 15-February-2019  E.Tcherniaev     (geom-specific-V10-05-03)
 - Accurate calculation of radical in G4IntersectingCone.
   It addresses the problem report #2111.
 
 4-February-2019  G.Cosmo           (geom-specific-V10-05-02)
 - Fix in G4EllipticalTube::CheckParameters() for typo in condition.
 
 30-January-2019  G.Cosmo           (geom-specific-V10-05-01)
 - Disabled precise computation of extent and use simple bounding-box
   in CalculateExtent() for G4Tet and G4TessellatedSolid, to speed up
   intialisation in setups with relatively complex meshes.
 - Apply bounding-box calculation for extent also for corresponding
   VecGeom wrappers.
 
 24-January-2019  E.Tcherniaev      (geom-specific-V10-05-00)
 - Completely revised, more robust and performant G4EllipticalTube;
   new exhaustive test/testEllipticalTube.cc based on Shape Conventions.
 
 20-September-2018  G.Cosmo         (geom-specific-V10-04-15)
 - Make G4UPolycone wrapper inheriting from vecgeom::GenericUnplacedPolycone,
   following the latest changes in VecGeom.
 
 13-September-2018  G.Cosmo         (geom-specific-V10-04-14)
 - G4UTessellatedSolid, G4UExtrudedSolid: removed leftover use of
   UVector3 and replaced with U3Vector.
 
 23-August-2018  G.Cosmo            (geom-specific-V10-04-13)
 - Enabled VecGeom wrapper for G4Tet.
 
 10-August-2018  A.Gheata           (geom-specific-V10-04-12)
 - Make G4UHype wrapper inheriting from vecgeom::GenericUnplacedHype,
   following the latest changes in VecGeom.
 
 12-July-2018  G.Cosmo              (geom-specific-V10-04-11)
 - Removed G4SolidsWorkspacePool class. Adapted G4SolidsWorkspace to
   use templated class G4TWorkspacePool.
 - Coworks with tags in geometry/volumes, run and visualization/management.
 
 25-Jun-2018  G.Cosmo               (geom-specific-V10-04-10)
 - Use dynamic_cast to attempt fix for spurious compilation warnings on
   CentOS7/gcc-5.3 on G4UTessellatedSolid wrapper.
 
 17-May-2018  J.Madsen              (geom-specific-V10-04-09)
 - Updated "thread-local-static-var" model to
   "function-returning-thread-local-static-reference" model
   which fixes Windows DLL + MT
 
 11-April-2018  G.Cosmo             (geom-specific-V10-04-08)
 - Replaced USOLIDS_LIBRARIES with VECGEOM_LIBRARIES in sources.cmake.
 
 13-February-2018  E.Tcherniaev     (geom-specific-V10-04-07)
 - Corrected conversion of input parameters to internal structure (used for
   caching for adoption in GDML persistency) in G4UPolycone and G4UPolyhedra
   wrappers.
 
 9-February-2018  G.Cosmo           (geom-specific-V10-04-06)
 - Caching facets and vertices in G4UTessellatedSolid wrapper for properly
   treating indexing in facets.
 
 31-January-2018  G.Cosmo           (geom-specific-V10-04-05)
 - Corrected use of facets indeces in G4UTessellatedSolid for visualization.
 - Minor cleanup in G4TessellatedSolid::CreatePolyhedron(), no functional
   changes.
 
 15-January-2018  G.Cosmo           (geom-specific-V10-04-04)
 - Added validity checks in G4UTessellatedSolid::AddFacet().
 
 11-January-2018  G.Cosmo           (geom-specific-V10-04-03)
 - Added and enabled VecGeom wrapper for G4TessellatedSolid.
   Requires tags cmake-V10-04-01 and config-V10-04-00.
 
 20-December-2017  G.Cosmo          (geom-specific-V10-04-02)
 - Enabled VecGeom wrappers for G4ExtrudedSolid and G4Hype.
 
 13-December-2017  E.Tcherniaev     (geom-specific-V10-04-01)
 - Removed redundant data initialistion in G4ExtrudedSolid constructors.
 
 11-December-2017  E.Tcherniaev     (geom-specific-V10-04-00)
 - Added missing initialisation of two data-members in copy-ctor and
   assignment operator of G4ExtrudedSolid. Addressing problem report #2016.
 
 22-November-2017  G.Cosmo         (geom-specific-V10-03-25)
 - Fix in SurfaceNormal() for G4ExtrudedSolid to assure explicit
   counting of the surfaces where the point is placed on edg
 
 2-November-2017  G.Cosmo          (geom-specific-V10-03-24)
 - Fixed compilation warning introduced with last tag.
 
 31-October-2017  E.Tcherniaev     (geom-specific-V10-03-23)
 - Added specialised implementation for constructs defining a non-convex right
   prism in G4ExtrudedSolid.
 
 20-October-2017  G.Cosmo          (geom-specific-V10-03-22)
 - G4TessellatedSolid: print also solid's name in StreamInfo().
 
 17-October-2017  G.Cosmo          (geom-specific-V10-03-21)
 - Added VecGeom wrapper G4UHype for G4Hype, not yet activated, pending
   fixes in VecGeom.
 
 16-October-2017  G.Cosmo          (geom-specific-V10-03-20)
 - Temporarly disabled wrappers for G4Tet and G4GenericPolycone, pending
   their corresponding implementation in VecGeom.
 
 28-September-2017  G.Cosmo        (geom-specific-V10-03-19)
 - Corrected initialisation of polyhedra by vertices in G4UPolyhdra wrapper
   following the changes in VecGeom.
 
 15-September-2017  G.Cosmo        (geom-specific-V10-03-18)
 - G4SolidsWorkspacePool: use DLL export flag for static thread-local
   symbol of the workspace.
 
 12-September-2017  G.Cosmo        (geom-specific-V10-03-17)
 - G4Voxelizer: directly set components for bounding-box instead of
   recreating it in BuildBoundingBox(..).
 
 8-September-2017  E.Tcherniaev    (geom-specific-V10-03-16)
 - Added specialised implementation for constructs defining a convex right
   prism in G4ExtrudedSolid.
 
 4-September-2017  G.Cosmo         (geom-specific-V10-03-15, 14)
 - Temporarly disabled wrapper for extruded-solid, pending implementation
   of extruded-solid in VecGeom.
 
 16-August-2017  J.Allison         (geom-specific-V10-03-13)
 - Twisted solids: Fixed bug in drawing polyhedra with negative twist angle.
   Addressing problem report #1995.
 
 27-July-2017  E.Tcherniaev        (geom-specific-V10-03-12)
 - G4EllipticalCone: corrected samping of random points on lateral surface in
   function GetPointOnSurface().
 
 24-July-2017  E.Tcherniaev        (geom-specific-V10-03-11)
 - G4EllipticalCone: improved GetPointOnSurface() to have uniform sampling of
   points, using function G4RandomPointOnEllipse().
 
 20-July-2017  E.Tcherniaev        (geom-specific-V10-03-10, 09)
 - G4EllipticalCone: reviewed implementation of Inside(), DistanceToIn/Out(p),
   SurfaceNormal() and GetPointOnSurface(); made more compact and performant.
   Addressing problem report #1974.
 
 15-June-2017  G.Cosmo             (geom-specific-V10-03-08)
 - Enabled adapter also in G4UPolycone wrapper.
 - Added check on open solid for G4UPolyhedra wrapper.
 
 6-June-2017  G.Cosmo              (geom-specific-V10-03-07)
 - Enable adapter for VecGeom shapes in G4U* wrappers for: paraboloid,
   polyhedra and GenericTrap. From now on, wrappers depends directly on
   VecGeom shapes implementation. USolids API is deprecated and no longer
   supported.
 
 24-May-2017  G.Cosmo              (geom-specific-V10-03-06)
 - Renamed ambiguous name Extent() in all solids and G4U* wrappers to
   BoundingLimits(). Change required in order to avoid signature conflict
   with VecGeom in G4U* wrappers.
   Requires tag geommng-V10-03-16.
 
 11-May-2017  G.Cosmo              (geom-specific-V10-03-05)
 - Removed potential race condition in G4VTwistSurface::AmIOnLeftSide().
   Addressing problem report #1972.
 
 7-April-2017  G.Cosmo             (geom-specific-V10-03-04)
 - Renamed G4SurfaceVoxelizer to G4Voxelizer and extended to support
   voxelisation of shapes in 3D space. Adapted G4TessellatedSolid accordingly.
 
 13-March-2017  G.Cosmo            (geom-specific-V10-03-03)
 - G4SolidsWorkspacePool: implemented CleanUpAndDestroyAllWorkspaces(),
   to be called by worker threads. Removed declaration (i.e. not implemented)
   of protected method ReleaseAndDestroyWorkspace().
 
 2-March-2017  E.Tcherniaev        (geom-specific-V10-03-02)
 - Fixed possible rounding off error in calculation of 'astep' (max angle
   for one step) in CalculateExtent() for G4Polycone, G4GenericPolycone
   and related USolids wrappers.
 
 27-February-2017  E.Tcherniaev    (geom-specific-V10-03-01)
 - Revised implementation of GetCubicVolume() and GetSurfaceArea() for
   G4EllipticalTube, to return exact values.
 - Revised implementation of GetSurfaceArea() for G4EllipticalCone, to
   return exact value; moved both GetCubicVolume() and GetSurfaceArea() to
   be not inline.
 
 13-December-2016  G.Cosmo         (geom-specific-V10-03-00)
 - Correction in G4UExtrudedSolid to signature for CalculateExtent().
   Fixes issue of undefined symbol if extruded-solid not included in the
   list of VecGeom wrappers to activate.
 
 30-November-2016  E.Tcherniaev    (geom-specific-V10-02-25)
 - Call RemoveRedundantVertices() from G4GeomTools in CalculateExtent()
   for G4Polycone, G4Polyhedra and related USolids wrappers.
 - Fix in G4Parabolid and G4UParaboloid for correct computation of extent.
 
 18-November-2016  E.Tcherniaev    (geom-specific-V10-02-24)
 - Added consistency checks for extent computation in USolids wrappers.
 - Fix in cached parameters in G4UPolyhedra.
 
 10-November-2016  G.Cosmo         (geom-specific-V10-02-23)
 - G4UPolyhedra re-introduced new implementation of CalculateExtent() using
   G4BoundingEnvelope and extended wrapper to cache corners and start/end
   Phi parameters, to overcome issues in VecGeom on treatment of angles.
 
 10-November-2016  E.Tcherniaev    (geom-specific-V10-02-22)
 - Added caching of corners and implementation of GetCorner() in G4UPolycone
   in order to assure correct translation.
 - Withdrawn changes in G4UPolyhedra introduced in tag geom-specific-V10-02-16
   until understood proper conversion from VecGeom.
 
 7-November-2016  E.Tcherniaev    (geom-specific-V10-02-21)
 - Correction in G4EllipticalCone::DistanceToOut(p) to make it more accurate.
 - Added optional debug flag G4BBOX_EXTENT in GNUMake build to compare
   extent calculation by simply using bounding-box.
 
 3-November-2016  G.Cosmo         (geom-specific-V10-02-20, 19)
 - Fix in G4PolyPhiFace for potential unitialised data in Inside().
 
 31-October-2016  E.Tcherniaev    (geom-specific-V10-02-18)
 - Re-implemented CalculateExtent() to make use of G4BoundingEnvelope and
   removed no-longer used method CreateRotatedVertices() in G4Polyhedra,
   G4EllipticalCone, G4Polycone, G4Paraboloid, G4ExtrudedSolid, G4Hype,
   G4GenericPolycone, G4TessellatedSolid, G4TwistedTubs and related USolids
   wrappers.
 - Use G4RandFlat instead of RandFlat.
 
 21-October-2016  G.Cosmo         (geom-specific-V10-02-17)
 - Moved initialisation of G4GeomSplitter thread-local data to be inline
   along with generic template type.
   Fixing compilation/linking errors on clang-3.9 and XCode-8 on MacOS.
 
 19-October-2016  E.Tcherniaev      (geom-specific-V10-02-16)
 - Reimplemented CalculateExtent() in G4Polycone, G4Polyhedra, G4GenericPolycone
   and associated USolids wrappers, to make use of G4BoundingEnvelope.
 
 5-October-2016  E.Tcherniaev       (geom-specific-V10-02-15, 14)
 - Reimplemented CalculateExtent() in G4Tet, G4UTet, G4GenericTrap,
   G4UGenericTrap, G4EllipticalTube and G4VTwistedFaceted, to make use
   of G4BoundingEnvelope; removed no-longer used method CreateRotatedVertices().
 
 20-September-2016  G.Cosmo         (geom-specific-V10-02-13)
 - Moved accessors/modifiers for splitter data to non-inline in
   G4PolyhedraSide and G4PolyconeSide.
   Explicitly initialise G4GeomSplitter data in G4SolidsWorkspace
   translation unit.
   Fixing compilation/linking errors on clang-3.9 and XCode-8 on MacOS.
 
 06-July-2016  E.Tcherniaev         (geom-specific-V10-02-12)
 - Fixed monir typo in function Create() for G4Polycone, G4Polyhedra and
   G4GenericPolycone.
   Fixed minor typos in G4GenericTrap::SurfaceNormal() and
   G4VTwistSurface::CurrentStatus::ResetfDone().
   Issues detected by PVS-Studio static code analyzer.
   Addressing problem report #1876.
 
 24-May-2016  G.Cosmo               (geom-specific-V10-02-11)
 - Correction in G4UExtrudedSolid for definition of CreatePolyhedron().
 
 20-May-2016  G.Cosmo               (geom-specific-V10-02-10)
 - Moved accessors and modifiers in USolids wrappers to be not inlined.
   Required modification in order to allow correct dispatching to VecGeom
   types.
 
 15-Apr-2016  G.Cosmo               (geom-specific-V10-02-09)
 - Added flag in USolids wrappers for partial use of USolids/VecGeom types.
 
 31-Mar-2016  G.Cosmo               (geom-specific-V10-02-08, 07)
 - Added overloaded CreatePolyhedron() method to USolids wrappers.
   It is now possible to visualize supported VecGeom shapes.
 - Added implementation of CreatePolyhedron() in UExtrudedSolid wrapper.
 
 10-Mar-2016  G.Cosmo               (geom-specific-V10-02-06)
 - Added overloaded GetEntityType() method to USolids wrappers.
 
 07-Mar-2016  E.Tcherniaev          (geom-specific-V10-02-05)
 - Fix in G4IntersectingCone for smaller precision constant in LineHitsCone1()
   and LineHitsCone2(). Fixes issue observed in G4GenericPolycone.
   Addressing problem report #1794.
 
 03-Mar-2016  G.Cosmo               (geom-specific-V10-02-04)
 - Fixed compilation warnings for potential uninitialised values in
   G4ExtrudedSolid::CheckPolygon() function introduced in previous tag.
 
 03-Mar-2016  E.Tcherniaev          (geom-specific-V10-02-03)
 - Added 'const' qualifier for methods in G4ExtrudedSolid.
   Added CheckPolygon() to remove collinear and coincident points from polygons.
 - G4QuadrangularFacet: added exhaustive tests in constructor to catch potential
   problems with a quadrangular facet: collinear vertices, non planar surface,
   degenerate, concave or self intersecting quadrilateral.
 - G4TriangularFacet: Improved test in constructor to detect degenerate (too
   small or too narrow) triangles.
 
 25-Feb-2016  E.Tcherniaev          (geom-specific-V10-02-02)
 - Correction in G4ExtrudedSolid::AddGeneralPolygonFacets() for precision
   treatment in construction of tessels to avoid cases of collinear points
   and consequent degenerating triangles.
   Address problem report #1777.
 - Use pre-computed kCarToleranceHalf constant in G4ExtrudedSolid, now
   protected in G4TessellatedSolid.
 - Improved algorithms for computation of area in G4TriangularFacet and
   G4QuadrangularFacet. Added post-const qualifier to GetArea().
 
 16-Feb-2016  G.Cosmo               (geom-specific-V10-02-01)
 - Revised implementation for GetSurfaceArea() and GetCubicVolume() in
   G4GenericTrap (E.Tcherniaev).
 - Protected debug warning in G4GenericTrap::SurfaceNormal() within G4SPECSDEBUG.
 
 02-Feb-2016  E.Tcherniaev          (geom-specific-V10-02-00)
 - Fix in G4GenericTrap for compuation of extent.
   Addressing problem report #1809.
 - Use dot() in formula for computation of GetCubicVolume() in
   G4TessellatedSolid.
 
 18-Nov-2015  G.Cosmo               (geom-specific-V10-01-15)
 - Added specialised implementation for GetCubicVolume() in
   G4TessellatedSolid (J.Allison).
 
 29-Oct-2015  G.Cosmo               (geom-specific-V10-01-14)
 - Added debug printouts within G4SPECSDEBUG in G4TessellatedSolid for
   DistanceToIn/Out(p,v) to identify potential wrong responses.
 
 26-Oct-2015  G.Cosmo               (geom-specific-V10-01-13)
 - Removed redundant condition in G4Polyhedra and G4polycone
   SetOriginalParameters() method.
 
 23-Oct-2015  G.Cosmo               (geom-specific-V10-01-12)
 - G4PolyhedraSide: moved internal struct definitions to public section
   to overcome deficiencies in object-persistency class parsing.
 
 07-Oct-2015  G.Cosmo               (geom-specific-V10-01-11)
 - Protected compilation of USolid wrappers with G4GEOM_USE_USOLIDS flag.
 
 01-Sep-2015  G.Cosmo               (geom-specific-V10-01-10)
 - Corrected conditional compilation flag in G4UParaboloid.cc.
 
 31-Aug-2015  G.Cosmo               (geom-specific-V10-01-09)
 - Added USolids/VecGeom wrapper for G4Paraboloid (G.Lima/FNAL).
   Activated only for external USolids/VecGeom installation.
 
 13-Aug-2015  G.Cosmo               (geom-specific-V10-01-08)
 - Checked for potential never-ending loops.
   No issues found, only added annotations.
 
 05-Aug-2015  G.Cosmo               (geom-specific-V10-01-07)
 - Minor code cleanup in G4SurfaceVoxelizer.
 
 03-Mar-2015  G.Cosmo               (geom-specific-V10-01-06)
 - Use accessors x(), y() and z() from UVector3, instead of directly accessing
   its data-members. Co-work with tag "geom-usolids-V10-01-09".
 
 23-Feb-2015  T.Nikitina            (geom-specific-V10-01-05)
 - Fix in SetOriginalParameters() for G4Polycone and G4Polyhedra, in case
   of presence of 'rings' structures. Addressing problem report #1705.
 
 26-Jan-2015  G.Cosmo               (geom-specific-V10-01-04)
 - Renamed DistanceAwayForInside() to DistanceAway() and use polymorphism.
 
 26-Jan-2015  T.Nikitina            (geom-specific-V10-01-03, 02)
 - Added special method for Inside 'DistanceAwayForInside()' in order to fix
   precision problem of calculation of DistanceToSide() in G4PolyconeSide.
 
 21-Jan-2015  T.Nikitina            (geom-specific-V10-01-01)
 - Fixed triangularisation method AddGeneralPOlygoneFacets() in
   G4ExtrudedSolid by avoiding flat triangles.
 - Added warning message to G4TriangularFacet constructor if Area is 0;
   i.e., case of flat triangle.
 - Addressing problem report #1703.
 
 12-Dec-2014  G.Cosmo               (geom-specific-V10-01-00)
 - Use canonical form for operator=() in G4PolyconeHistorical and
   G4PolyhedraHistorical.
 
 17-Sep-2014  G.Cosmo               (geom-specific-V10-00-11)
 - Added wrappers for UExtrudedSolid and UGenericTrap; adapted switches to
   original G4 types accordingly. Requires tag "geom-usolids-V10-00-16".
 
 01-Sep-2014  G.Cosmo               (geom-specific-V10-00-10)
 - Fixed use of polyhedron pointer, to avoid race condition in MT
   when parameterised volumes are visualised.
 
 22-May-2014  G.Cosmo               (geom-specific-V10-00-09)
 - Added protection in generic constructor of G4Polyhedra for the case when
   improper number of sides is given as input.
 
 10-Apr-2014  G.Cosmo               (geom-specific-V10-00-08)
 - Get rid of deprecated 'register' storage class specifier in source files.
 
 31-Mar-2014  G.Cosmo               (geom-specific-V10-00-07)
 - Fixed signature of assignment operator to G4VCSGfaceted.
 
 31-Mar-2014  G.Cosmo               (geom-specific-V10-00-06)
 - Fixed signature of assignment operator to G4Polycone, G4Polyhedra and
   and G4GenericPolycone.
 
 05-Mar-2014  G.Cosmo               (geom-specific-V10-00-05)
 - Fixed proper handling of polyhedron pointer in solids, to avoid memory
   leak for visualization of parameterised volumes.
 
 12-Feb-2014  G.Cosmo               (geom-specific-V10-00-04)
 - Simply reset polyhedron pointer to zero for modifiers of G4U* wrappers
   in parameterisation. Resolves crash in MT visualization when using USolids.
 
 12-Feb-2014  G.Cosmo               (geom-specific-V10-00-03 [and -02])
 - Added correct cloning mechanism in G4U* wrappers.
   Addressing problem report #1553.
 
 18-Dec-2013  T.Nikitina            (geom-specific-V10-00-01)
 - Fix in G4GenericTrap::InsidePolygone() to check if p lies between the two
   extremes of the segment. Addressing problem report #1541.
 
 17-Dec-2013  G.Cosmo               (geom-specific-V10-00-00)
 - Corrected left-over debug printout in G4Polycone::SetOriginalParameters().
 
 04-Dec-2013  G.Cosmo               (geom-specific-V09-06-36)
 - Corrected left-over debug printout in G4Polyhedra::SetOriginalParameters().
 
 22-Nov-2013  G.Cosmo               (geom-specific-V09-06-35)
 - Correction to USolids wrappers for proper setting of name to base class.
 
 19-Nov-2013  J.Apostolakis         (geom-specific-V09-06-34)
 - Fix for issue identified by Coverity: fixed implementation of
   G4SolidsWorkspacePool singleton.
 
 20-Nov-2013  T.Mikitina            (geom-specific-V09-06-33)
 - Fixed Coverity defects to USolids wrappers.
 
 14-Nov-2013  G.Cosmo               (geom-specific-V09-06-32, 31)
 - Enabled use of Reset() in G4UPolycone.
 - Corrections to G4UPolycone and G4UPolyhedra to allow for visualization
   of parameterisations on these solids.
 
 13-Nov-2013  G.Cosmo               (geom-specific-V09-06-30)
 - Correction to G4UTet and G4UGenericPolycone to explicitly include
   symbols re-definitions from G4Tet and G4GenericPolycone respectively.
 
 12-Nov-2013  G.Cosmo               (geom-specific-V09-06-29)
 - Added dummy method G4UPolycone::Reset().
   NOTE: Required related implementation (currently missing!) in UPolycone.
 
 12-Nov-2013  G.Cosmo               (geom-specific-V09-06-28)
 - Correction to USolids switch mechanism for G4Polycone.
 
 08-Nov-2013  J.Apostolakis         (geom-specific-V09-06-27)
 - G4SolidsWorkspace: cleanup of verbosity.
   Reduced verbosity by making it optional.
   Added Set/Get Verbose methods to toggle and view it.
   Added parameter to constructor for verbosity (default=off).
 
 07-Nov-2013  G.Cosmo (geom-specific-V09-06-26)
 - Moved wrappers from usolids module.
   Fixed internal dispatcher method for parameterisation in all wrappers.
 - Added switching mechanism for G4GenericPolycone, G4Polycone, G4Polyhedra
   and G4Tet.
 
 06-Nov-2013  G.Cosmo (geom-specific-V09-06-25)
 - Added switch mechanism for USolids (G4GenericPolycone, G4Polycone,
   G4Polyhedra, G4Tet). Renamed related G4 types to 'G4O'.
 - Moved wrappers from USolids module.
 
 01-Nov-2013  G.Cosmo (geom-specific-V09-06-24)
 - Corrected CMake script.
 
 31-Oct-2013  G.Cosmo (geom-specific-V09-06-23)
 - Fix for in G4Polyhedra::SetOriginalParameters(). (T.Nikitina)
 - Moved G4PolyconeHistorical and G4PolyhedraHistorical in separate
   translation units.
 
 29-Oct-2013  T.Nikitina (geom-specific-V09-06-22)
 - Split G4Polycone for polycones with decreasing Z-sections.
   Introduced new class G4GenericPolycone.
 - Fixed conversion of generic construct for G4Polyhedra.
 
 17-Oct-2013  J.Apostolakis/A.Dotti (geom-specific-V09-06-21)
 - Cleanup of code for workspace.
 
 16-Oct-2013  J.Apostolakis/A.Dotti (geom-specific-V09-06-20)
 - Created G4SolidsWorkspacePool class, to manage Workspaces
   Fixed Singleton G4SolidsWorkspacePool for thread safe creation of object.
 
 04-Oct-2013  J.Apostolakis (geom-specific-V09-06-19)
 - Retagged.
   NOTE: requires tag "geommng-V09-06-12" and co-works with "geomvol-V09-06-13".
 
 04-Oct-2013  J.Apostolakis (geom-specific-V09-06-18)
 - Created G4SolidsWorkspace class, to create, initialize and destroy
   per-thread state of PolyCone Sides and PolyHedra Sides.
 
 27-Aug-2013  G.Cosmo (geom-specific-V09-06-17)
 - Enabled G4Ellipsoid for parameterisation.
 
 14-Aug-2013  G.Cosmo (geom-specific-V09-06-16)
 - Move function-scoped 'static const' values for half-tolerances to private
   data members of classes, to overcome false-positive race-conditions defects
   reported by Valgrind in MT mode.
 - Fix in G4TessellatedSolid::DistanceToIn(p,v) for specific cases where points
   are located near surface (T.Nikitina).
 
 16-Jul-2013  M.Gayer (geom-specific-V09-06-15)
 - Fix in G4SurfaceVoxelizer affecting tessellated-solid (and extruded-solid)
   for wrong computation of DistanceToIn(p,v) for points outside, when
   optimisation is active.
 
 11-Jul-2013  G.Cosmo (geom-specific-V09-06-14)
 - Fixed compilation warning in G4Polycone on MacOS/clang.
 
 09-Jul-2013  T.Nikitina (geom-specific-V09-06-13)
 - Extended method SetOriginalParameters() in G4Polycone in order to handle
   all possible cases of conversion of generic polycone to polycone with
   (Rmin,Rmaz,Z) parameters.
   Addressing problem report #1462.
 
 03-Jun-2013  G.Cosmo (geom-specific-V09-06-12)
 - Fixed minor Coverity defect in G4PolyhedraSide and G4PolyconeSide.
 
 22-Apr-2013  J.Apostolakis (geom-specific-V09-06-11)
 - Revised G4ExtrudedSolid::IsSameLine to use the perpendicular
   distance to a line when deciding - not the y-intercept difference.
   ( Issue responsible for a problem in Subtraction Solid in Atlas.
      Tatiana & Ivana contributed to debugging. )
 - Changed GNUmakefile in test directory to work with Cmake and granular
   builds.
 
 16-Apr-2013  T.Nikitina (geom-specific-V09-06-10)
 - Fix in calculation of normal in G4Tet::DistanceToOut(p,v,..) and
   SurfaceNormal(p).
 - Fix in G4Polycone::GetPointOnCone() for cases of shape with decreasing Z.
   Fixes cases of false report for overlaps detection. Problem report #1462.
   Added check with exception in constructor for polycone with rInner > rOuter
   for the same Z.
 
 18-Mar-2013  G.Cosmo (geom-specific-V09-06-09)
 - G4TessellatedSolid: fixed problem with navigation in tessellated solids
   with concave surfaces. Addresses problem report #1456.
 - More cleanup from MT changes in G4VTwistSurface and G4Tet.
 
 12-Mar-2013  G.Cosmo (geom-specific-V09-06-08)
 - Added public accessors for MT data to G4PolyconeSide and G4PolyhedraSide.
 
 11-Mar-2013  G.Cosmo (geom-specific-V09-06-07)
 - Redefined G4DLL_API to G4GEOM_DLL to avoid cases of macro redefinition.
 
 08-Mar-2013  G.Cosmo (geom-specific-V09-06-06)
 - Renamed G4MT macros to safer ID in G4PolyconeSide and G4PolyhedraSide.
 
 07-Mar-2013  G.Cosmo (geom-specific-V09-06-05)
 - Adopt G4GeomSplitter instead of G4MTTransitory in G4PolyconeSide and
   G4PolyhedraSide. Fixed import/export of static symbols for WIN32 DLLs build.
 
 22-Feb-2013  G.Cosmo (geom-specific-V09-06-04)
 - Cleanup changes for multi-threading in G4Tet, G4VTwistSurface,
   G4PolyconeSide and G4PolyhedraSide.
 - Removed unused private data member in G4TwistTrapParallelSide.
 
 07-Mar-2013  G.Cosmo (geom-specific-V09-06-05)
 - Adopt G4GeomSplitter instead of G4MTTransitory in G4PolyconeSide and
   G4PolyhedraSide. Fixed import/export of static symbols for WIN32 DLLs build.
 
 22-Feb-2013  G.Cosmo (geom-specific-V09-06-04)
 - Cleanup changes for multi-threading in G4Tet, G4VTwistSurface,
   G4PolyconeSide and G4PolyhedraSide.
 - Removed unused private data member in G4TwistTrapParallelSide.
 
 11-Jan-2013  G.Cosmo (geom-specific-V09-06-03)
 - Fixed condition in G4VTwistSurface::GetBoundaryLimit() for logical error.
   Addressing problem report #1420.
 
 20-Dec-2012  M.Gayer (geom-specific-V09-06-02)
 - Fixed cases of hang-ups in G4ExtrudedSolid on 32-bits platforms, due to
   G4TessellatedSolid and G4SurfVoxelizer, caused by accessing bitmask arrays
   with negative indexes. The problem was related to floating-point rounding,
   which can be different even on same platform with debug/release version.
   Assure same number of computed voxels on 32-bit/64-bit platforms.
   Fixed error in SetVertexIndex() method, which might cause problems on
   certain configurations even for 64-bit systems. Fixed minor memory leaks.
 - Code cleanup for use of G4endl and tabs...
 
 14-Dec-2012  G.Cosmo (geom-specific-V09-06-01)
 - Restored SVN id headers.
 
 02-Dec-2012  J.Allison (geom-specific-V09-06-00)
 - Removed NURBS.
 
 29-Nov-2012  G.Cosmo (geom-specific-V09-05-24)
 - Remove inclusion of G4PhysicalConstants.hh from G4SurfaceVoxelizer.hh.
 - Fixed unit test for compilation errors.
 
 28-Nov-2012  G.Cosmo (geom-specific-V09-05-23)
 - Fixed more cases of inclusion of constants header.
 
 23-Nov-2012  G.Cosmo (geom-specific-V09-05-22)
 - Added 'const' qualifiers to signature in G4VoxelComparator::operator()
   for porting on AIX-xlC compiler.
 
 14-Nov-2012  P.Mato (geom-specific-V09-05-21)
 - Added #undef NDEBUG in unit tests to ensure assert works also in
   full optimised mode.
 
 14-Nov-2012  P. Mato (geom-specific-V09-05-20)
 - Added #undef NDEBUG in unit tests to ensure that assert always works
 
 13-Nov-2012  M.Gayer (geom-specific-V09-05-19)
 - More fixes for out-of-bound array accesses in G4SurfaceVoxelizer.
 
 12-Nov-2012  M.Gayer (geom-specific-V09-05-18)
 - Fixed out-of-bound array access in BuildReduceVoxels2().
 
 06-Nov-2012  G.Cosmo (geom-specific-V09-05-17)
 - Correction in sources.cmake script for missing .icc file.
 
 06-Nov-2012  G.Cosmo (geom-specific-V09-05-16)
 - Fixed Coverity defects in new code (M.Gayer).
 - Minor fixes for porting on AIX.
 
 01-Nov-2012  G.Cosmo (geom-specific-V09-05-15)
 - Fixed compilation of debug code under G4SPECSDEBUG.
 
 01-Nov-2012  M.Gayer (geom-specific-V09-05-14)
 - Corrected signature for voxels count methods in G4SurfaceVoxelizer.
 
 31-Oct-2012  M.Gayer (geom-specific-V09-05-13)
 - Added set/get methods for voxels count in G4SurfaceVoxelizer.
 
 30-Oct-2012  M.Gayer (geom-specific-V09-05-12)
 - Fixed indexing of vertices in facets for tessellated-solid and some cleanup.
 
 27-Oct-2012  G.Cosmo (geom-specific-V09-05-11)
 - Fixed initialization of data in G4SurfaceVoxelizer (M.Gayer).
 - Added post-const qualifier to G4VertextComparator::operator() in
   G4TessellatedSolid.
 - Fixed more compilation warnings on unused variable.
 
 26-Oct-2012  G.Cosmo (geom-specific-V09-05-10)
 - Corrected compilation problem on G4SurfBits for use of fprint().
 - Polished comments in disclaimer in new updated classes.
 
 25-Oct-2012  G.Cosmo (geom-specific-V09-05-09)
 - Corrected compilation warnings on Linux and fixed use of memset/memcpy.
 
 25-Oct-2012  G.Cosmo (geom-specific-V09-05-08)
 - Correction to sources.cmake.
 
 19-Oct-2012  M.Gayer (geom-specific-V09-05-07)
 - Complete rewrite of G4TessellatedSolid resulting in reduced memory
   requirements by 50%, and factor of tens or more speedup for number of facets
   of the order of thousands, thanks to ad-hoc voxelization of the surface.
   Factor of thousands speedup when number of facets of the order of hundreds
   thousand. New classes introduced, G4SurfBits and G4SurfaceVoxelizer.
 
 12-Jun-2012  G.Cosmo (geom-specific-V09-05-06)
 - Explicitly use inclusion of headers for system of units and physical
   constants, in plan to remove implicit inclusion from globals.hh.
 
 14-May-2012  G.Cosmo (geom-specific-V09-05-05)
 - Fixed spurious cases of hidden variable visibility, detected with
   '-Wshadow' compilation option on gcc compiler.
 
 06-Apr-2012  M.Kelsey (geom-specific-V09-05-04)
 - Modified GetPointOnSurface() to throw sqrt(r) uniformly for disk surfaces,
   in G4Paraboloid, G4Polycone and G4TwistedTubs.
 
 13-Dec-2011  G.Cosmo (geom-specific-V09-05-03, 02, 01)
 - Fixed trivial Coverity defects in G4TwistedTubs and G4VTwisteFaceted for
   missing protection against self-assignment.
 
 09-Dec-2011  T.Nikitina (geom-specific-V09-05-00)
 - Fix in G4EllipticalCone in DistanceToIn(p,v) to exclude imaginary solution
   (virtual cone) when distance is calculated.
 
 10-Nov-2011  G.Cosmo (geom-specific-V09-04-09)
 - Fixed trivial Coverity defects on assignment operators...
 
 25-Oct-2011  G.Cosmo (geom-specific-V09-04-08)
 - Fixed logic in G4VTwistSurface::GetEdgeVisibility() in treatment of corners.
 
 16-Sep-2011  G.Cosmo (geom-specific-V09-04-07)
 - Fix compilation error in code within G4SPECSDEBUG. No functional changes.
 
 13-Sep-2011  I.Hrivnacova (geom-specific-V09-04-06)
 - G4TriangularFacet: fixed tests where square root was compared to
   half Cartesian tolerance; now compared to kCarTolerance.
   Addressing problem report #1242.
 
 25-Aug-2011  G.Cosmo
 - 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.
 - Added unit test for G4ExtrudedSolid (J.Apostolakis).
 
 22-Aug-2011  I.Hrivnacova (geom-specific-V09-04-05)
 - Fix in G4TriangularFacet::Intersect() to take into account geometrical
   tolerance and cases of zero distance from surface's facet.
 - Fix in G4TessellatedSolid::DistanceToOut(p) and DistanceToIn(p) to exactly
   compute distance from facet avoiding use of 'outgoing' flag shortcut variant.
 - Addressing problem report #1242.
 
 17-Aug-2011  T.Nikitina (geom-specific-V09-04-04)
 - Fix in G4Paraboloid::DistanceToIn(p,v) and DistanceToIn(p) to properly
   take into account tolerance and provide better estimation of distance
   respectively. Addresses problem report #1234.
 
 04-Aug-2011  T.Nikitina (geom-specific-V09-04-03)
 - Added SetReferences() and InvertFacets() to G4GenericTrap::CreatePolyhedron()
   for proper visualisation of Boolean compositions with G4GenericTrap.
 - Added SetReferences() to G4TessellatedSolid::CreatePolyhedron()
   for proper visualisation of Boolean compositions with G4TessellatedSolid.
 - Requires tag "greps-V09-04-04", for addressing problem report #1235.
 
 17-May-2011  I.Hrivnacova (geom-specific-V09-04-02)
 - G4ExtrudedSolid: fix in Inside(p) for false overlap reporting.
   Addressing problem report #1211.
 
 12-May-2011  G.Cosmo (geom-specific-V09-04-01)
 - Fixed compilation warnings from gcc-4.6.0 for variables set but not used.
 
 06-May-2011  G.Cosmo (geom-specific-V09-04-00)
 - Use G4 typedef for CLHEP types.
 
 26-Nov-2010  T.Nikitina (geom-specific-V09-03-20)
 - Fixes in G4GenericTrap reported by SBT unit test in SurfaceNormal(),
   DistanceToPlane() and VisExtent().
 
 16-Nov-2010  T.Nikitina (geom-specific-V09-03-19)
 - G4EllipticalCone: fixes in DistanceToIn(p,v) and DistanceToOut(p,v) for
   correct handling of point on the surface.
   Corrected formula for SurfaceNormal(p).
 
 10-Nov-2010  T.Nikitina (geom-specific-V09-03-18)
 - Added checks on crossing of vertices and too big twisted angle in
   G4GenericTrap.
 - Fixed case of division by zero in G4TwistedTubs.
 - Added unit test for G4Polyhedra.
 
 02-Nov-2010  G.Cosmo (geom-specific-V09-03-17)
 - More fixes on Coverity reports for G4TessellatedSolid and G4ReduciblePolygon.
 
 20-Oct-2010  G.Cosmo (geom-specific-V09-03-16)
 - Implemented Clone() virtual method for all solids, returning a pointer
   to a dynamically allocated copy of the solid. To be used by Geant4-MT.
 
 23-Sep-2010  G.Cosmo (geom-specific-V09-03-15)
 - Initialize fpPolyhedron to zero in copy-ctor and operator=().
 - Completed implementation of copy-ctor and operator=() for facets.
 
 20-Sep-2010  G.Cosmo (geom-specific-V09-03-14)
 - Implemented copy-constructor and assignment operator for all solids
   to facilitate conversion to Geant4-MT.
 
 08-Sep-2010  G.Cosmo (geom-specific-V09-03-13)
 - Correction to previous fix in G4ReduciblePolygon to avoid deleting current
   'vertexHead' pointer.
 
 07-Sep-2010  G.Cosmo (geom-specific-V09-03-12)
 - Fix within G4CSGDEBUG code for restoring cout precision.
 - Fix in G4ReduciblePolygon::RemoveRedundantVertices() to avoid potential
   case of dereferencing freed pointer.
 
 19-Aug-2010  T.Nikitina (geom-specific-V09-03-11)
 - G4EllipticalTube: extended implementation of SurfaceNormal(p) in agreement
   with canonical form. Added unit test testG4EllipticalTube.cc.
 
 16-Jul-2010  G.Cosmo (geom-specific-V09-03-10)
 - Fixed cases of division by zero in G4VTwistSurface and G4TwistBoxSide.
 - Use INT_MAX as initialisation for max limits in G4SolidExtentList.
 
 12-Jul-2010  G.Cosmo (geom-specific-V09-03-09)
 - Added dummy initialization to members in struct
   G4PolyPhiFace::G4PolyPhiFaceEdge, struct G4ReduciblePolygon::ABVertex.
   G4Ellipsoid, G4EllipticalTube, G4EnclosingCylinder, G4ExtrudedSolid, G4Hype,
   G4IntersectingCone, G4Paraboloid, G4PolyPhiFace, G4Polycone, G4PolyconeSide,
   G4Polyhedra, G4PolyhedraSide, G4QuadrangularFacet, G4ReduciblePolygon,
   G4TessellatedSolid, G4TriangularFacet, G4TwistBoxSide, G4TwistTrapAlphaSide,
   G4TwistTrapFlatSide, G4TwistTrapParallelSide, G4TwistTubsFlatSide,
   G4TwistTubsHypeSide, G4TwistTubsSide, G4TwistedTubs, G4VCSGfaceted, G4VFacet,
   G4VTwistSurface, G4VTwistedFaceted.
 - Fixed case of dereferencing null pointer in methods
   G4EllipticalTube::DistanceToOut(p,v), G4VCSGfaceted::DistanceToIn(p,v)
   and G4VCSGfaceted::DistanceToOut(p,v).
 - Fixed unecessary object copy as argument in method
   G4PolyhedraSide::IntersectSidePlane().
 - Avoid possible case of derefencing null pointer in G4ReduciblePolygon
   RemoveDuplicateVertices() and RemoveRedundantVertices() methods.
 - Replaced calls to std::abs() with std::fabs() where suitable.
 
 16-Jun-2010  G.Cosmo (geom-specific-V09-03-08)
 - Fixed deletion of internal arrays in CreatePolyhedron() for G4Polycone
   and G4Polyhedra.
 
 11-Jun-2010  T.Nikitina (geom-specific-V09-03-07)
 - G4GenericTrap: fixed cases of zero dToIn/sToOut when vertices are collapsed
   to triangle, line or point. Added new methods handling those specific cases.
 - Added unit test for G4GenericTrap.
 
 10-Jun-2010  I.Hrivnacova
 - G4GenericTrap: fixed parameter names in CalculateExtent() for the test
   case construction through tessellated facets.
 
 09-Jun-2010  G.Cosmo
 - G4GenericTrap: moved internal methods to private section and reordered
   in source file. Added missing implementation for IsTwisted() method.
 
 03-Jun-2010  T.Nikitina, G.Cosmo (geom-specific-V09-03-06)
 - G4GenericTrap:
   o Fixed initialization of fSurfaceArea and fCubicVolume and
     calculation of surface area.
   o Fixed error in Inside(p) function, and corrected use std::fabs() instead
     of std::abs() for floating point values.
   o Added missing initialisation of fpPolyhedron pointer.
   o More corrected signatures for use of non-const references for vectors
     passed as arguments to functions.
 
 02-Jun-2010  G.Cosmo (geom-specific-V09-03-05)
 - G4GenericTrap: use const reference for vector of vertices passed as argument
   in constructor and accessor.
 
 27-May-2010  T.Nikitina (geom-specific-V09-03-04)
 - First implementation of G4GenericTrap shape, a new solid representing an
   arbitrary trapezoid with up to 8 vertices standing on two parallel planes
   perpendicular to the Z axis.
 
 28-Apr-2010  P.R.Truscott (geom-specific-V09-03-03)
 - Fix in G4TriangularFacet and G4TessellatedSolid to correct treatment of
   optical photon transport related to internal reflection at surface.
   Addresses problem report #1103.
 
 15-Apr-2010  I.Hrivnacova (geom-specific-V09-03-02)
 - G4ExtrudedSolid: eliminated requirement for clockwise ordering of polygon
   vertices. Added a check for vertices ordering; if vertices are defined
   anti-clockwise their ordering is reverted.
   Fix in polygon facet triangularization for consequent concave vertices.
 
 24-Feb-2010  G.Cosmo (geom-specific-V09-03-01)
 - Adopt caching of Phi in G4PolyconeSide and G4PolyhedraSide to avoid
   unnecessary consecutive computations on the same point.
 
 10-Feb-2010  G.Cosmo (geom-specific-V09-03-00)
 - Use kInfinity for initialising minimum and maximum allowed extent for
   G4SolidExtentList of faceted solids.
 
 11-Nov-2009  G.Cosmo (geom-specific-V09-02-08)
 - Avoid fake (and redundant) assignment of value to 3-vector in
   G4PolyconeSide and G4TwistTubsSide.
 
 24-Sep-2009  T.Nikitina (geom-specific-V09-02-07)
 - G4Ellipsoid: refined fix in DistanceToIn(p,v) for points located on the
   curved surface, and correct treatment of geometrical tolerance.
 
 09-Sep-2009  G.Cosmo (geom-specific-V09-02-06)
 - G4Ellipsoid: fixed usage of half-tolerances (radial and Cartesian) in
   DistanceToIn(p,v), based on incorrect assumptions introduced in tag
   "geom-specific-V09-02-04", responsible for zero steps on configurations
   with cut in Z. Addresses problem report #1076.
 
 04-Aug-2009  T.Nikitina (geom-specific-V09-02-05)
 - G4Ellipsoid:
   o Fixes in Inside(p) and in DistanceToIn(p,v) for points
     located on the curved surface within tolerance. Final fix for issue
     reported in problem report #1050 and concerning warnings reported by
     grid_test.
   o Adopt pre-computed half-tolerance values for optimisation.
 
 23-Jul-2009  T.Nikitina (geom-specific-V09-02-04)
 - G4Ellipsoid: fix to DistanceToIn(p,v) in the calculation of the roots of
   the quadratic equation and in DistanceToOut(p,v) in the calculation of the
   normal on cut surfaces. Final fix for problem report #1022 and #1050.
 - G4PolyconeSide: added protection in method Normal(), addressing problem
   report #1073.
 
 30-Jun-2009  T.Nikitina (geom-specific-V09-02-03)
 - G4Ellipsoid: introduced to DistanceToIn(p,v) splitting of the distance for
   point very far from intersection area and big difference between solid
   dimensions and distance to it; resolves issue observed on 64 bits problem.
   Also addressing problem report #1022.
 
 08-May-2009, G.Cosmo (geom-specific-V09-02-02)
 - Corrected typo in base implementation of G4VCSGfaceted::GetSurfaceArea(),
   which was erroneously returning cubic volume estimation.
   Addresses problem report #1062.
 
 27-Apr-2009, G.Cosmo (geom-specific-V09-02-01)
 - Relaxed error condition in G4TessellatedSolid::Inside(p) to warning, for
   excess of max trials and anomalous conditions in distance calculation.
   Added more printout information when error condition is detected.
 
 27-Feb-2009, T.Nikitina (geom-specific-V09-02-00)
 - Fix in G4Paraboloid::DistanceToOut(p,v,..) for the computation of normal
   to surface; added missing normalisation to unit, following remark in the
   Geometry Forum Hypernews posting #953.
 
 21-Nov-2008, G.Cosmo (geom-specific-V09-01-19)
 - Added missing accessors to G4EllipticalCone, required for detector
   persistency.
 
 13-Nov-2008, G.Cosmo (geom-specific-V09-01-18)
 - Corrected initialisation of algorithm in G4TriangularFacet constructor.
 
 30-Oct-2008, I.Hrivnacova (geom-specific-V09-01-17)
 - G4ExtrudedSolid: fixed bug in the decomposition of polygonal sides for
   quadrangular facets in MakeFacets(). Addresses problem report #1029.
 
 23-Sep-2008, T.Nikitina (geom-specific-V09-01-16)
 - Corrected algorithm in G4TriangularFacet::GetPointOnFace() according to
   suggestion advanced in problem report #1025. Fixes a problem of false
   overlaps detection related to G4ExtrudedSolid and G4TessellatedSolid.
 
 12-Sep-2008, G.Cosmo (geom-specific-V09-01-15)
 - G4VFacet: corrected increment of indeces in operator==(), following
   problem report #1024.
 
 25-Jul-2008, I.Hrivnacova (geom-specific-V09-01-14)
 - G4ExtrudedSolid: fix in polygon decomposition; systematically use
   half kCarTolerance instead of kCarTolerance; added solid name in the
   error messages coming from fatal exceptions.
 
 16-Jul-2008, T.Nikitina (geom-specific-V09-01-13)
 - G4Paraboloid: revised DistanceToOut(p,v,...) in answer to problem report
   #1015. Fixed precision problem when solving quadratic equation; apply
   comparison with kCarTolerance and not with zero; fixed logic problem in
   algoritm for points on surface and direction inside, relative to directions
   along Z, (0,0,Vz).
 
 22-May-2008, G.Cosmo (geom-specific-V09-01-12)
 - Removed left-over debug printout in G4VCSGFaceted::DistanceToIn().
 
 15-May-2008, T.Nikitina (geom-specific-V09-01-11)
 - Enhanced GetPointOnSurface() for generic G4Polycone and G4Polyhedra
   constructs; the method uses new triangulation algorithm for G4PolyPhiFace.
 - G4ExtrudedSolid: added missing 'std' namespace to standard mathematical
   function calls.
 
 28-Apr-2008, T.Nikitina (geom-specific-V09-01-10)
 - Added kCarTolerance in definition of "low" and "high" cone limits in R
   and in Z in order to protect against numerical errors. This fixes cases of
   DistanceToIn(p,v) returning 'kInfinity' when p+t*v cross intersection
   between two cones.
 
 25-Apr-2008, T.Nikitina (geom-specific-V09-01-09)
 - Added protection against NaN in G4IntersectingCone::LineHitsCone1() in
   case of configuration where a conic section becomes a tube.
 - G4EllipticalCone: removed some debug printouts.
 
 14-Apr-2008, T.Nikitina (geom-specific-V09-01-08)
 - G4Hype: refined polyhedron representation for correct visualization of
   the shape. Coworks with tag "greps-V09-01-04".
 
 13-Mar-2008, G.Cosmo (geom-specific-V09-01-07)
 - Cleared compilation warnings in G4Paraboloid and G4TessellatedSolid
   on gcc-4.3.0 for ambiguous use of parentheses in condition statements.
 
 28-Feb-2008, I.Hrivnacova (geom-specific-V09-01-06)
 - Correction to previous fix in G4ExtrudedSolid: testing on the edges has
   to be limited to the line segment, for this purpose a new internal method
   IsSameLineSegment() has been introduced for use instead of IsSameLine().
 - Updated and extended unit test testG4ExtrudedSolid.cc.
 
 27-Feb-2008, I.Hrivnacova (geom-specific-V09-01-05)
 - Fix in G4TessellatedSolid::DistanceToOut(p,v,..) to compute normal only
   if specified by flag in input.
 - Fix in G4ExtrudedSolid::Inside(p) for correctly handling the case of
   points located on the edges of triangles which are not the outline edges
   of the polygon.
 
 21-Feb-2008, T.Nikitina (geom-specific-V09-01-04)
 - G4Polyhedra: fixed problem of out-of-bound access to vectors in
   GetPointOnSurface().
 
 20-Feb-2008, I.Hrivnacova (geom-specific-V09-01-03)
 - G4TessellatedSolid: fixed bug in copy-constructor and internal method
   CopyObjects() for cloning of facets.
 
 05-Feb-2008, I.Hrivnacova (geom-specific-V09-01-02)
 - G4ExtrudedSolid: bug fix in MakeFacets() to fill 'fTriangles' also in case
   of polygon with 3 or 4 vertices, as they are needed for Inside(p).
 
 02-Feb-2008, I.Hrivnacova (geom-specific-V09-01-01)
 - Corrected triangularization of polygon, now correctly handling case
   of concave shapes.
 - Corrected order of arguments in G4Paraboloid constructor.
 
 16-Jan-2008, I.Hrivnacova (geom-specific-V09-01-00)
 - In G4ExtrudedSolid::MakeFacets(), now adding triangular facets before quadrangular
   ones, following logic behind G4TessellatedSolid.
 
 12-Dec-2007, G.Cosmo (geom-specific-V09-00-08a)
 - Remove use of global static constant from singleton initialisation in
   G4TessellatedGeometryAlgorithms class. Use 'sqrEpsilon' as local value.
 
 15-Nov-2007, P.Truscott (geom-specific-V09-00-08)
 - Reviewed implementation of G4TessellatedSolid::CalculateExtent() to
   make it more robust and precise, following suggestion by S.Seibert
   addressed in problem report #983, now fixed.
 
 12-Oct-2007, G.Cosmo (geom-specific-V09-00-07)
 - Corrected wrong boolean condition in method IntersectLineAndTriangle2D()
   of G4TessellatedGeometryAlgorithms causing compilation error on VC++8.
 
 09-Oct-2007, G.Cosmo (geom-specific-V09-00-06)
 - Reviewed G4TessellatedSolid classes in order not to make use of random
   numbers for selection of direction (by P.Truscott).
 
 02-Oct-2007, G.Cosmo
 - Removed debug printout in G4Polycone::GetPointOnCone().
 
 23-Aug-2007, G.Cosmo (geom-specific-V09-00-05)
 - Revision of G4TessellatedSolid classes:
   o Fixed problem report #931 by P.Truscott, based on suggestion of
     R.Holmberg. Modified classes G4TessellatedSolid and G4TriangularFacet.
   o Modified data and accessor 'centroid' and 'GetCentroid()' for G4VFacet;
     replaced by 'circumcentre' and 'GetCircumcentre()' respectively.
   o Added utility class G4TessellatedGeometryAlgorithms.
 - Added formulas for calculating SemiAxis and Zheight in G4EllipticalCone
   (by T.Nikitina).
 
 20-Aug-2007, T.Nikitina & L.Lindroos (geom-specific-V09-00-04)
 - Revision of G4EllipticalCone:
   o DistanceToIn(p): corrected answer for p.z()<-zTopCut and for the point
     p on the surface.
   o DistanceToOut(p,v): now returning positive solution or zero when crossing
     the elliptical surface.
   o Fix in DistanceToOut(p) which was giving always zero.
   o Corrected visualisation error of solid in graphics_reps.
   o Added some formulas on how to pre-calculate 'SemiAxis' and 'zheight'.
   o Added checkDistanceToOut() method to unit test.
 - Corrections to G4Paraboloid:
   o Fixed bug in CalculateSurfaceArea() method
   o Added correct initialisation of 'fPolyhedron' in constructor.
   o Added unit test testG4Paraboloid.
 
 13-Aug-2007, W.Pokorski (geom-specific-V09-00-03)
 - G4PolyconeSide: added workaround to initialisation of 'corners' vector,
   to allow for object persistency with Root-I/O (W.Pokorski).
 
 18-Jul-2007, G.Cosmo (geom-specific-V09-00-02)
 - New specific G4Paraboloid with cuts along the Z axis (by L.Lindroos).
 - Fixed dummy constructors of G4Polycone and G4PolyPhiFace for initialisation
   of 'edges' and 'corners'.
 - Coworks with tag "greps-V09-00-01".
 
 12-Jul-2007, T.Nikitina (geom-specific-V09-00-01)
 - Fix in G4Polyhedra::GetPointOnSurface() to correctly treat 'totalPhi' instead of
   'endPhi' for the case of open shapes and 'twopi' for not open shapes.
 
 05-Jul-2007, T.Nikitina (geom-specific-V09-00-00)
 - Fix in G4Polyhedra::GetPointOnSurface() for the case when number of sectors
   (numSide) is equal to 1. At the origin of problems observed when checking
   overlaps for polyhedra solids defined as such.
 
 31-May-2007, G.Cosmo (geom-specific-V08-03-03)
 - Fixed initialisation of constants in constructor for - G4VTwistSurface,
   G4PolyPhiFace, G4PolyconeSide, G4PolyhedraSide - following latest changes
   for tunable tolerance.
 
 25-May-2007, G.Cosmo (geom-specific-V08-03-02)
 - Fixed default response of DistToIn/DistToOut for twisted solids.
 - Use G4TWISTDEBUG instead of G4SPECSDEBUG as debug conditional flag
   for twisted solids.
 - Some cleanup in G4TwistTrapAlphaSide code.
 
 18-May-2007, G.Cosmo (geom-specific-V08-03-01)
 - Use kAngTolerance and kRadTolerance from G4GeometryTolerance class.
 - Coworks with tag "global-V08-03-03".
 
 11-May-2007, T.Nikitina (geom-specific-V08-03-00)
 - Use call to G4GeometryTolerance instead of kCarTolerance where needed.
 - Requires tag "global-V08-03-00" and related tag set.
 
 26-Apr-2007, T.Nikitina (geom-specific-V08-02-05)
 - Fix in GetPointOnSurface() for G4Polycone to consider also points laying
   on rings when consecutive Z-sections are coincident.
   Added method GetPointOnRing().
 - Added unit test testPointOnSurfacePoly.cc.
 
 27-Feb-2007, I.Hrivnacova (geom-specific-V08-02-04)
 - Added specialised constructor for handling Z-sections in G4ExtrudedSolid.
 - Cleared unecessary declaration of IsInside() methods in G4TriangularFacet
   and G4QuadrangularFacet.
 - Updated unit test for G4ExtrudedSolid.
 
 26-Feb-2007, I.Hrivnacova (geom-specific-V08-02-04)
 - Added specialised constructor for handling Z-sections in G4ExtrudedSolid.
 - Cleared unecessary declaration of IsInside() methods in G4TriangularFacet
   and G4QuadrangularFacet.
 - Updated unit test for G4ExtrudedSolid.
 
 15-Feb-2007, I.Hrivnacova (geom-specific-V08-02-03)
 - Corrected caching of values in G4ExtrudedSolid.
 - Bug fix in G4TriangularFacet::Intersect() to allow for correct update of
   'Distance' in condition.
 - Updated unit test for G4ExtrudedSolid.
 
 09-Feb-2007, G.Cosmo (geom-specific-V08-02-02)
 - Introduced new shape G4ExtrudedSolid, a solid representing the extrusion
   of an arbitrary polygon with fixed outline in the two Z sections.
   New files: G4ExtrudedSolid[.hh.icc.cc] and testG4ExtrudedSolid.cc
   by I.Hrivnacova.
 - G4TessellatedSolid:
   o Made relevant solid's methods virtual, to be used as base class.
   o Added implementation for GetSurfaceArea() and GetPointOnSurface() methods.
   o Added protection in SurfaceNormal() method in case of facet not found.
   o Check and return kOutside in Inside() if point out of solid's extent.
 
 01-Feb-2007, G.Cosmo (geom-specific-V08-02-01)
 - Fix in G4PolyconeSide::DistanceAway() for correct estimation of distance
   for the case of Phi sections (T.Nikitina).
   Addresses problem report #598.
 - Updated unit test for G4Polycone to consider new test case.
 
 22-Jan-2007, G.Cosmo (geom-specific-V08-02-00)
 - Do not scale reducible-polygon in G4Polyhedra::Reset() method.
   The 'original_parameters' structure offered as input through the accessors
   are always assumed to be already scaled by the 'cos(0.5*phiTotal/theNumSide)'
   factor. Addresses problem report #873.
 - Fixed warning printout in G4Polycone::Reset().
 
 15-Nov-2006, J.Allison (geom-specific-V08-01-04)
 - Fixed typo in G4Polycone::CreatePolyhedron() introduced by mistake in
   the last cleanup of the source code.
 
 13-Nov-2006, G.Cosmo (geom-specific-V08-01-03)
 - Added concrete implementation of GetSurfaceArea() in G4Tet (M.H.Mendenhall).
 
 08-Nov-2006, G.Cosmo (geom-specific-V08-01-02)
 - Cleared compilation warnings on SUN-CC for changes in the last tag.
   Fixed overloaded class variables in G4Polyhedra and G4Polycone
   implementation of CreatePolyhedron().
 
 31-Oct-2006, J.Allison (geom-specific-V08-01-01)
 - Implemented CreatePolyhedron() for G4Polyhedra and G4Polycone.
 
 20-Oct-2006, G.Cosmo (geom-specific-V08-01-00)
 - Implemented caching mechanism for computation of surface area in
   all solids and base classes, as done for the geometrical volume
   computation.
 - Added missing fake constructor for object persistency to G4TessellatedSolid.
 
 20-Jun-2006, G.Cosmo (geom-specific-V08-00-10)
 - Added accessor method GetVertices() in G4Tet to return the list of
   vertices composing the solid. Required for GDML persistency.
 
 06-Jun-2006, G.Cosmo (geom-specific-V08-00-09)
 - Added protection against NaNs in G4PolyconeSide::Normal() for points at
   the origin.
 
 19-May-2006, G.Cosmo (geom-specific-V08-00-08)
 - Fix in G4Ellipsoid::SetZCuts() and G4EllipticalTube::SetZCut() for usage
   of uninitialised variables.
 
 08-May-2006, G.Cosmo (geom-specific-V08-00-07)
 - Cleared compilation warning on SUN-CC in G4TriangularFacet.cc.
 
 04-May-2006, G.Cosmo (geom-specific-V08-00-06)
 - Use different names for unit tests to avoid confusing liblist ...
 
 03-May-2006, G.Cosmo (geom-specific-V08-00-05)
 - Added four unit tests for G4TessellatedSolid.
 
 24-Mar-2006, G.Cosmo (geom-specific-V08-00-04)
 - G4TwistedTubs: defined exact estimation for GetCubicVolume(),
   similar to the one adopted for G4Tubs.
 
 03-Mar-2006, G.Cosmo (geom-specific-V08-00-03)
 - Corrected boolean condition in G4TriangularFacet::Intersect().
   Use '&&' operator in condition. Allows for porting on WIN32-VC.
 
 01-Mar-2006, G.Cosmo (geom-specific-V08-00-02)
 - Introducing first implementation of a tessellated solid, contribution
   of P.R.Truscott (QinetiQ Ltd, UK).
   New classes: G4QuadrangularFacet, G4TessellatedSolid, G4TriangularFacet
   and G4VFacet.
 - Requires tag "greps-V08-00-00".
 
 12-Jan-2006, J.Allison (geom-specific-V08-00-01)
 - G4TwistedTubs and G4VTwistedFaceted::CreatePolyhedron():
   parameterised polyhedron mesh approximation in terms of
   G4Polyhedron::GetNumberOfRotationSteps().
   This is (a) more economical and (b) amenable to user control.
 
 19-Dec-2005, O.Link (geom-specific-V08-00-00)
 - Fixes in G4EllipticalCone:
   o Changed GetPointOnSurface(), which was not uniform in endcaps.
   o Bug fix in Inside(), which was not correct for the elliptic mantel.
     Made test similar as in G4EllipticTube.
   o Several fixes in DistanceToIn/Out(): for looping events (shortest
     distance was taken, even if 0); now comparing the distance to the endcap
     and to the mantel and decide afterwards which distance is shortest;
     added check n*v.
   o The code is now "good" at 90%. Still 10% wrong reconstructed events.
     e.g there is a problem is DistanceToOut(): missed the intersection
     (reconstruction took the encap instead of the mantel).
 
 09-Dec-2005, O.Link
 - Fixed visibility of soft edges on the twisted solids.
 
 08-Dec-2005, O.Link (geom-specific-V07-01-14)
 - Fixed bug in G4VTwistSurface::ComputeLocalPoint(p) for point coordinate
   transformation. The bug affected only G4TwistTrapFlatSide.
 
 06-Dec-2005, G.Cosmo (geom-specific-V07-01-13)
 - Fixed compilation errors on WIN32-VC for last tag changes.
 
 05-Dec-2005, O.Link (geom-specific-V07-01-12)
 - Added polyhedron definition for twisted solids (G4TwistedTrap,
   G4TwistedTrd, G4TwistedBox, G4TwistedTubs) for visualization.
 
 30-Nov-2005, G.Cosmo (geom-specific-V07-01-11)
 - Trivial fixes for porting on CLHEP-2.0.X series.
 
 18-Nov-2005, O.Link (geom-specific-V07-01-10)
 - Renamed classes for twisted solids set, to identify them in the
   twisted framework.
 
 17-Nov-2005, O.Link
 - G4VTwistedFacted:
   o corrected bug in DistanceToSurface() implementation
   o added GetPointOnSurface() method
 - G4TwistedTubs:
   o added GetPointOnSurface() method
 - G4Hype:
   o corrected surface area calculation used in GetPointOnSurface()
 
 17-Nov-2005, G.Cosmo (geom-specific-V07-01-09)
 - More fixes required for direct object persistency to G4Polycone,
   G4polyhedra and related utility classes.
 
 10-Nov-2005, J.Allison (geom-specific-V07-01-08)
 - G4Tet:
   o Added implementation for GetPolyhedron() and GetCubicVolume().
   o Corrected order of specifying vertices in CreatePolyhedron().
 
 09-Nov-2005, G.Cosmo (geom-specific-V07-01-07)
 - Added fake default constructor for all concrete solids and relevant
   utility classes, for usage of direct object persistency.
 - Implemented changes to support CLHEP-2.0.X for explicit usage of the
   CLHEP/HepGeom namespaces for CLHEP types.
 
 07-Nov-2005, G.Cosmo (geom-specific-V07-01-06)
 - G4Ellipsoid: replaced call to hypot(x,y) with std::sqrt(x*x+y*y)
   for porting to ISO standard.
 
 02-Nov-2005, G.Cosmo (geom-specific-V07-01-05)
 - G4Polyhedra, G4Polycone:
   o Protected case of generic construct for visualization.
   o Introduced explicit flag and method IsGeneric() to identify the kind
     of constructor used.
 
 29-Sep-2005, G.Cosmo (geom-specific-V07-01-04)
 - Fix in G4EllipticalCone methods DistanceToIn() and DistanceToOut().
   Added unit test for it (by D.Anninos).
 - Coworks with tag "greps-V07-01-02".
 
 10-Aug-2005, G.Cosmo (geom-specific-V07-01-03)
 - Introduced new solid G4EllipticalCone, a full cone with elliptical base
   that can be cut in Z (by D.Anninos).
   Coworks with tag "greps-V07-01-02".
 
 08-Aug-2005, D.Anninos (geom-specific-V07-01-02)
 - Added GetPointOnSurface() for all solids except twisted ones.
   The method returns a random point according to a quasi-uniform
   distribution along the surface.
 
 18-Jul-2005, G.Cosmo (geom-specific-V07-01-01)
 - Fixed compilation warning on WIN32-VC for G4VSurface.cc.
 - Not including G4Tet.
 
 06-Jul-2005, G.Cosmo (geom-specific-V07-01-00)
 - Added new shape G4Ellipsoid. Coworks with tag "greps-V07-01-00".
   Contribution of G.Horton-Smith and G.Guerrieri.
   Code cleanup, and added default arguments for cuts, added first
   implementation of unit test.
 - Corrected unit tests for twisted-box/trap.
 - Not including G4Tet.
 
 15-Jun-2005, J.Apostolakis
 - Introduced new solid G4Tet, contribution of M.H.Mendenhall
   and R.A.Weller, Vanderbilt University, USA.
 
 29-Apr-2005, O.Link (geom-specific-V07-00-04)
 - G4TwistedSurface: fixed bug in GetAreaCode() affecting G4TwistedTubs.
 
 04-Apr-2005, G.Cosmo (geom-specific-V07-00-03)
 - Added test for Number-Of-Rotation-Steps in GetPolyhedron() for
   G4VCSGfaceted, G4Hype and G4EllipticalTube (by J.Allison).
   Requires tag "greps-V07-00-02".
 - Added elementary implementation of CreatePolyhedron() for G4Hype,
   G4TwistedBox, G4TwistedTubs, G4TwistedTrd, G4TwistedTrap.
 - Some code cleanup.
 
 18-Mar-2005, O.Link (geom-specific-V07-00-02)
 - New generic framework for twisted solids G4TwistedBox, G4TwistedTrd and
   G4TwistedTrap: inheriting now from the base class G4VTwistedFaceted.
 - Extended G4TwistedTrap to support setups with different trapezoidal
   endcaps with centres not necessarily on a line parallel to the z axis.
 - Added G4TwistedTrd and general G4TwistedTrap as test cases in test.
 
 03-Mar-2005, J.Allison
 - Changed AddThis() to AddSolid() for all solids in the implementation
   of DescribeYourselfTo(G4VGraphicsScene&).
 
 01-Mar-2005, O.Link (geom-specific-V07-00-01)
 - Fixed compilation warnings on WIN32-VC for G4VSurface.cc.
 
 14-Feb-2005, O.Link (geom-specific-V07-00-00)
 - Use new polynom approximations based on new solver based on Jenkins-Traub
   algorithm, for twisted-box and twisted-trap.
 - Fixed bug in the usage of 'fmod' and adopt special treatment for 'parallel'
   events in G4TwistedBoxSide and G4TwistedTrapSide.
 - Coworks with tag "global-V07-00-00".
 
 08-Dec-2004, O.Link (geom-specific-V06-02-07)
 - Extensions to twisted box/trap shapes to consider all 4 solutions
   for determining correct intersections.
 
 29-Nov-2004, O.Link (geom-specific-V06-02-06)
 - G4TwistedTrapSide, G4TwistedBoxSide: improved (analytical) version
   of GetPhiUAtX() method.
 
 24-Nov-2004, O.Link (geom-specific-V06-02-05)
 - Fixed bug in description of twisted trapezoid side.
 
 12-Nov-2004, O.Link (geom-specific-V06-02-04)
 - Added G4TwistedBox  - a twisted box with twist angle alpha,
                         length a/2,b/2,L/2.
 - Added G4TwistedTrap - a twisted trapezoid (still in debug state)
 - Changed in G4VSurface.icc:
     - GetNeighbours(): corrected axiscode (was returning the wrong neighbours)
     - SetNeighbours(): fixed problem #685 (index out of range)
 - Added tests for G4TwistedBox and G4TwistedTrap in specific/test.
 - Added G4TwistedBox and G4TwistedTrap in system testing, test10.
 
 22-Oct-2004, D.C.Williams (geom-specific-V06-02-03)
 - Fix in G4PolyconeSide::Inside for points at radius = 0 for phi slides
   solids with an inner radius. Addresses problem report #598.
 
 10-Oct-2004, J.Allison (geom-specific-V06-02-02)
 - Added GetPolyhedron, a smart access function that creates a G4Polyhedron
   on request and stores for future access.  A null pointer means "not
   available".
 
 22-Sep-2004, G.Cosmo (geom-specific-V06-02-01)
 - Added implementation of GetCubicVolume() with cashing mechanism for
   solids: G4EllipticalTube, G4Hype, G4Polyhedra, G4Polycone, G4TwistedTubs.
 
 01-Sep-2004, D.C.Williams (geom-specific-V06-02-00)
 - G4VCSGfaceted: fix for rare anomalous situation in which
   DistanceToOut(p,v,..) will report kInfinity, make an additional check
   for the point p on the surface, in which case will report zero.
   Addresses problem observed in G4Polyhedra and reported in #650.
 
 07-Jun-2004, G.Cosmo (geom-specific-V06-01-04)
 - Fixed compilation problem in G4TwistedSurface.cc on WIN32-VC.
 
 28-May-2004, G.Cosmo (geom-specific-V06-01-03)
 - Fixed archiving problem on WIN32-VC7: replaced structs with classes
   in G4VSurface.
 - Replaced misleading names for masks in G4VSurface and moved inlined
   methods of nested classes to .cc.
 
 25-May-2004, G.Cosmo (geom-specific-V06-01-02)
 - Fixed compilation problem on SUN-CC. Made EValidate enum public in
   G4VSurface.hh.
 
 24-May-2004, G.Cosmo (geom-specific-V06-01-01)
 - Removed compilation warnings and minor cleanup...
 
 19-May-2004, O.Link (geom-specific-V06-01-00)
 - First implementation of a framework for twisted surfaces, integrated from
   the original version of Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp)
   implemented in the 'Jupiter' application.
   o Includes new specific twisted shape: G4TwistedTubs.
   o New classes: G4VSurface, G4TwistedSurface, G4HyperbolicSurface,
                  G4FlatSurface, G4TwistedTubs.
   o Cleanup of original code (debugging messages, compiler errors, migration
     of g4std to new convention...)
   o New organisation of class G4TwistedTubs: now independent of XXXSurface;
     removed backpointer 'fSolid' from XXXSurface to G4TwistedTubs.
   o New form of constructors in G4TwistedSurface, G4HyperbolicSurface and
     G4FlatSurface.
   o Change in G4TwistedSurface::DistanceToIn(p,v,...): roundoff correction.
 
 12-Jan-2004, G.Cosmo (geom-specific-V06-00-00)
 - G4PolyhedraSide.cc: fixed bug in which particles could "leak" out the
   center of a face if inner radius = 0.
   Fixes problem report #547. (D.Williams)
 
 22-Nov-2003, G.Cosmo (geom-specific-V05-02-07)
 - Fixed upper bound for protection check introduced in G4Polycone and
   G4Polyhedra constructors.
 
 17-Nov-2003, G.Cosmo (geom-specific-V05-02-06)
 - Added protections in G4Polycone and G4Polyhedra constructors for
   invalid constructs with no contiguous segments in Z planes as input.
 
 04-Nov-2003, G.Cosmo (geom-specific-V05-02-05)
 - Added SetOriginalParameters() method to G4Polycone and G4Polyhedra.
 
 03-Nov-2003, G.Cosmo (geom-specific-V05-02-04)
 - Code cleanup and headers inclusion review
   (replaced by forward declarations where necessary).
 
 28-Oct-2003, G.Cosmo (geom-specific-V05-02-03)
 - Migrated to new G4Exception scheme.
 
 20-Oct-2003, G.Cosmo (geom-specific-V05-02-02)
 - Added Reset() method in G4Polycone and G4Polyhedra to allow
   recalculation and reshape of the solid if new original_parameters
   are provided.
 
 30-Sep-2003, G.Cosmo (geom-specific-V05-02-01)
 - Updated GNUmakefile for unit tests, according to new structure
   introduced in "geometry-V05-02-00".
 
 16-Jun-2003, G.Cosmo (geom-specific-V05-02-00)
 - Added accessors to original_parameters for G4Polycone and G4Polyhedra.
   Made G4PolyconeHistorical and G4PolyhedraHistorical classes in global
   scope (temporary solution).
 
 28-Mar-2003, G.Cosmo (geom-specific-V05-00-00)
 - Fixed initialisation of base class in copy contructor for:
   G4PolyPhiFace, G4PolyconeSide, G4PolyhedraSide.
 - Fixed trivial pedantic warnings on G4Polycone and G4Polyhedra.
 
 30-Oct-2002, G.Cosmo (geom-specific-V04-01-01)
 - Fixed un-initialised data members in constructors of classes:
   G4ClippablePolygon, G4EnclosingCylinder, G4PolyconeSide,
   G4ReduciblePolygon, G4VCSGfaceted.
 
 28-Oct-2002, G.Cosmo (geom-specific-V04-01-00)
 - Added implementation of StreamInfo() to comply with new interface for
   G4VSolid in "geommng-V04-01-03".
 - Created .icc files for G4EllipticalTube, G4Polyhedra and G4Polycone.
 - Some cosmetic changes to code formatting: removed <TAB> characters and adopt
   uniform code indentation.
 
 08-May-2002, J.Allison (geom-solids-specific-V04-00-01)
 - Implemented G4EllipticalTube::CreatePolyhedron.
 
 10-Jan-2002, G.Cosmo (geom-solids-specific-V04-00-00)
 - Updated unit tests.
 
 20-Apr-2001, G.Cosmo (geom-solids-specific-V03-01-00)
 - Migration to STL vector:
   o In G4ClippablePolygon, migrated G4ThreeVectorList typedef and
     made private to class.
 
 03-Apr-2001, D.Williams  (geom-solids-specific-V03-00-01)
 -----------------------
 - G4IntersectingCone.cc: make small adjustment to help with roundoff error
   in LineHitsCone1() and LineHitsCone2().
 
 08-Jan-2001, D.Williams  (geom-solids-specific-V03-00-00)
 -----------------------
 - G4Hype.cc: Added protecton against zero v.z in DistanceToOut.
 
 20-Nov-2000, G.Cosmo     (geom-solids-specific-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.
 
 13-Nov-2000, G.Cosmo     (geom-solids-specific-V02-00-03)
 --------------------
 - Added definition of empty constructor for G4ClippablePolygon which
   went lost by mistake...
 
 02-Nov-2000, G.Cosmo     (geom-solids-specific-V02-00-02)
 --------------------
 - QA code revision and cleanup (+fixes from CodeWizard filtering):
   o Avoid inline virtual methods.
   o General cosmetics for Software Reference Manual.
 
 23-Oct-2000, D.Williams  (geom-solids-specific-V02-00-01)
 -----------------------
 - G4IntersectingCone.cc: the check for a zero radical has been adjusted to be
   less sensitive to round off error in LineHitsCone1(), LineHitsCone2().
   This fixes a problem discovered in BaBar.
 
 12-Sep-2000, G.Cosmo  (geom-solids-specific-V02-00-00)
 --------------------
 - Organised comments to headers for Software Reference Manual.
 
 27-Jun-2000, G.Cosmo  (geom-solids-specific-V01-01-02)
 --------------------
 - G4Polycone[.hh.cc]: better fix for bug-report #110.
   Removed struct and replaced with class.
 
 26-Jun-2000, G.Cosmo  (geom-solids-specific-V01-01-01)
 --------------------
 - G4Polycone.cc: fixed memory leak by invoking destruction of member
   enclosingCylinder, which was not cleaned up in the destructor.
   This fixes problem report #107.
 - G4Polycone.hh: added forward declaration of struct G4PolyconeHistorical
   and made it friend, for porting on KCC --strict. This fixes report #110.
 - G4Polyhedra.hh: fixed typo in method name. Changed GetNumSIde() to
   GetNumSide(). This fixes problem report #105.
 
 08-Jun-2000, G.Gracia
 ---------------------
 - G4VCSGfaceted.cc: fix for Win/NT in function GetExtent().
 
 27-Apr-2000, G.Cosmo
 --------------------
 - Removed dependency over the CSG domain in GNUmakefile.
 
 18-Apr-2000, D.Williams
 -----------------------
 - Removed meaningless "const" specifiers from methods in G4ClippablePolygon,
   and G4EllipticalTube.
 - G4EllipticalTube, G4Hype and G4VCSGfaceted now inherit directly
   from G4VSolid (before was G4CSGSolid).
 - Reintroduced GetExtent() in G4EllipticalTube, G4Hype and G4VCSGfaceted
   (in principle, not needed).
 - Modified assertations in unit test testG4Hype.cc.
 
 11-Apr-2000, J.Allison
 ----------------------
 - Removed implementations of GetExtent in most sub-classes of G4VSolid (a
   default implementation exists in G4VSolid).
 - All implementations of DescribeYourselfTo (G4VGraphicsScene& scene) const
   now correctly written: scene.AddThis(*this).
 
 05-Apr-2000, G.Cosmo   (geom-solids-specific-V01-01-00)
 --------------------
 - Restructured solids/CSG domain, by moving to "specific" the following
   classes: G4ClippablePolygon, G4EnclosingCylinder, G4Hype, G4PolyPhiFace,
   G4Polycone, G4PolyconeSide, G4Polyhedra, G4PolyhedraSide, G4ReduciblePolygon,
   G4IntersectingCone, G4SolidExtentList, G4VCSGface, G4VCSGfaceted.
   The new module's library for "specific" is now called 'G4specsolids'.
 - Created specific/test directory and moved testG4Hype.cc and testG4Polycone,cc
   from CSG/test.
 - Organised class description comments for the Software Reference Manual
   and added CVS headers to files.
 
 29-Mar-2000, D.Williams
 -----------------------
 - Added first implementation of G4EllipticalTube.
   It defines a simple elliptical tube, as in geant3 "ELTU".
   Files introduced: G4EllipticalTube[.hh.cc].
 
 25-Mar-2000, G.Cosmo
 --------------------
 - History file created.