$Id: History,v 1.8 2001/05/18 10:00:22 johna Exp $
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     Geant4 - an Object-Oriented Toolkit for Simulation in HEP
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                      Category History file
                      ---------------------
This file should be used by G4 developers and category coordinators
to briefly summarize all major modifications introduced in the code
and keep track of all category-tags.
It DOES NOT substitute the  CVS log-message one should put at every
committal in the CVS repository !

     *************************************************************
     * Note that modeling and test have their own History files. *
     *************************************************************

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

History file for visualization category
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18th May 2001 John Allison (raytracer-V03-01-00)
- Removed unnecessary virtual inheritance of G4VViewer in G4RayTracerViewer.

2nd May 2000  John Allison
- G4RayTracer: set out-of-world ray to black.
- G4RayTracerViewer: corrected trapping of orthogonal projection.

10th March 2000  Makoto Asai
- Added some comments for copyright notice and for the software reference manual.

24th February 2000  John Allison
- Added protection for null viewer in G4RTSteppingAction.cc and
  G4RayTrajectory.cc.
- Corrected for zoom, etc., in G4RayTracerViewer.cc.

23rd February 2000  John Allison
- Added G4RayTracerSceneHandler and Viewer.
- Some modifications to other RayTracer routines for vis compliance.
- (Note: headAngle still not right - ray traced views are sometimes tipped.)

22nd February 2000  John Allison (raytracer-V01-00-01a)
- Added G4std:: in a few places to obtain ISO compliance.
- Change "char*" to "const char*" in G4OutBitStream::CopyByte(...).

22nd February 2000  Makoto Asai (raytracer-V01-00-01)
- Change "char*" to "const char*"
- use g4std/fstream

17th February 2000  Makoto Asai (raytracer-V01-00-00)
- Primary tag of sub-category

29th January 2000  Makoto Asai
- Introduction of G4RayTracer (visualization/RayTracer/...)
- Migration of G4RayTracer
  affected files :
    visualization/GNUmakefile
    visualization/management/include/MyVisManager.cc
    visualization/management/src/G4VisManager.cc
  affected files in other directory :
    config/G4VIS_BUILD.gmk
    config/G4VIS_USE.gmk