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geant4/source/visualization/OpenGL/History
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Gabriele Cosmo 8a51e0bc40 Import Geant4 8.0.0 source tree
2016-06-09 14:36:02 +02:00

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$Id: History,v 1.59 2005/11/24 10:24:12 allison Exp $
-------------------------------------------------------------------
=========================================================
Geant4 - an Object-Oriented Toolkit for Simulation in HEP
=========================================================
Category History file
---------------------
This file should be used by G4 developers and category coordinators
to briefly summarize all major modifications introduced in the code
and keep track of all category-tags.
It DOES NOT substitute the CVS log-message one should put at every
committal in the CVS repository !
----------------------------------------------------------
* Reverse chronological order (last date on top), please *
----------------------------------------------------------
History file for visualization/OpenGL
-------------------------------------
24th November 2005 John Allison (opengl-V07-01-09)
- Protected G4OpenGLXmViewerMessenger with #ifdef G4VIS_BUILD_OPENGLXM_DRIVER.
22nd November 2005 John Allison (opengl-V07-01-08)
- Added G4OpenGLXmViewerMessenger.
- Corrected text position.
- Made depth test for polyhedron GL_LEQUAL (slightly dominant).
17th November 2005 Gabriele Cosmo
- Fixed settings of background style for WIN32 viewers.
13th November 2005 John Allison (opengl-V07-01-07)
- Implemented X-Window-style geometry hints in G4OpenGLXViewer.
13th October 2005 John Allison (opengl-V07-01-06)
- Allowed any colour background.
- Implemented non-uniform scaling.
- Migration to <sstream>.
29th September 2005 John Allison (opengl-V07-01-05)
- Added G4OpenGLViewerDataStore to facilitate access of viewer data by
scene handler.
- Re-implemented transparency button in OpenGLXm.
13th September 2005 John Allison (opengl-V07-01-04 - needs visman-V07-01-02)
- Implemented white background for all OGL viewers.
- G4OpenGLSceneHandler.cc:
o Fixed hidden line removal (bug introduced in opengl-V07-01-02).
o Fixed treatment of triangular polygons for drawing of auxiliary/soft lines.
o Corrected GetTextColour(text).
o Corrected GetColour(polyhedron).
5th September 2005 John Allison (opengl-V07-01-03)
- Bug fix: stored transparent objects were being lost.
2nd September 2005 John Allison (opengl-V07-01-02 - needs visman-V07-01-01)
- Bug fix: edgeflags problem introduced with smooth shading in
opengl-V07-01-00.
- Implementation of a "better algorithm" for the rendering of
transparent polyhedron objects. It renders all opaque objects
first, then renders the transparent objects with the depth buffer in
read-only mode (see OpenGL Programming Guide). It uses the new
facility in G4VSceneHandler::ProcessScene for an optional second pass
of the run-duration models in the scene. Note this algorithm is
still only an approximation. It will still give the wrong blended
colour if two transparent objects are rendered front first. For
nested transparent objects, this is unfortunate, because
G4PhysicalVolumeModel traverses Geant4's mother-daughter hierarchy
in such a way that mothers come first. Also, there is no guaranteed
relationship between the order of rendering and the depth of two
transparent objects if they are at the same level or in different
branches of the hierarchy. Still, the only error will be an
incorrect colour - the objects will still give the appearance of
transparency, so it's a pretty good algorithm. (An even better
algorithm would be to attempt to render the facets in depth order,
deepest first. But how do you calculate the depth - centre of area,
deepest corner? One can still imagine pathalogical cases that would
sometimes give the wrong colour. Also, for stored mode, the order
is fixed in a display list so when the user rotates the view, one
would lose the depth ordering. I think we have to accept that
blending in OpenGL is only ever an approximation. For accurate
blending, use RayTracer.)
28th August 2005 John Allison (opengl-V07-01-01)
- Half-way implementation of rendering of transparent polyhedron
objects. In this implementation, no account is taken of the order
of rendering. Transparent objects are rendered with depth testing
off so that objects behind can still be seen. But this means that
opaque objects in front do not obscure them - and they jolly well
should! A better algorithm is to render all opaque objects first,
then render the transparent objects with the depth buffer in
read-only mode (see OpenGL Programming Guide). This is going to
take a little more thought - see opengl-V07-01-02.
20th July 2005 John Allison (opengl-V07-01-00)
- Introduced smooth shading, taking advantage of hitherto un-noticed
feature of HepPolyhedron::GetNextFacet that calculates the normals
at each vertex so that curved surfaces are rendered more
realistically (Gouraud shading).
- G4OpenGLImmediateSceneHandler.cc: Removed unnecessary #include's.
- G4OpenGLXmViewer.cc: Fixed to use window size hints. This changes
the default window size. It used to be 400x400, hardcoded in
G4OpenGLXmViewer.cc, but now it picks up the
G4ViewParameters::GetWindowSizeHintX/Y, which defaults to 600x600.
The user may change it on the command line, e.g:
/vis/open OGLSXm 500
or
/vis/viewer/create ! ! 500
30th May 2005 John Allison (opengl-V07-00-03)
- Fixed compilation problem in OpenGL on SUN. (Replaced multimap by
map of vectors in G4OpenGLFontBaseStore.)
4th May 2005 John Allison (opengl-V07-00-02)
- Restored sequence Set/Clear/DrawView in ClearTransientStore. (It
was taken out to prevent recursive calling, but that seems to be OK,
and it is needed to implement refresh at end of event/run.)
22nd April 2005 John Allison (opengl-V07-00-01)
- Rationalised work of opengl-V07-00-00. Functionality unchanged.
o G4OpenGLViewer.hh: Created virtual void CreateFontLists(){}.
o In all concrete viewers, added call to CreateFontLists().
o Moved font code for X to G4OpenGLXViewer::CreateFontLists().
o There is no longer a need to implement in the XmViewer, since it
now inherits. Thus the font code now only appears once for X.
o Awaiting implementation for WIN32.
17th April 2005 John Allison (opengl-V07-00-00)
- Based on vis-V07-00-13.
- Implemented text for X-Windows viewers. Uses glXUseXFont, which
creates display lists for nominated fonts. Simple-minded scheme in
which each viewer creates its own font display lists for a variety
of sizes, which are accessed by the scene handler through a new
class, G4OpenGLFontBaseStore. Affected methods:
G4OpenGLXViewer::CreateMainWindow()
G4OpenGLXmViewer::CreateMainWindow()
G4OpenGLSceneHandler::AddPrimitive (const G4Text& text)
18th November 2004 John Allison (opengl-V06-02-07)
- Removed redundant fLastVP from G4OpenGLStoredSceneHandler.
15th November 2004 Guy Barrand
- G4OpenGLWin32Viewer::ShowView : glFlush was not sufficient
to see trajectories (for example with N03). Correct so that
ShowView do a FinishView that does : glFlush, wglSwapBuffer
and empty the Windows message queue.
22nd September 2004 John Allison (opengl-V06-02-06)
- doxygen output to tmp area.
- Trap non-regular polyhedrons.
13th September 2004 Gabriele Cosmo (opengl-V06-02-05)
- G4OpenGLTransform3D.cc: simplified implementation for GetMatrix()
to allow for porting on CLHEP-1.9.X series.
23rd July 2004 John Allison
- Draws auxiliary edges if required.
- Added auxiliary edge button.
16th July 2004 John Allison (opengl-V06-02-04)
- Refinements to hidden line, hidden surface removal.
14th July 2004 John Allison (opengl-V06-02-03)
- Removed superfluous #include "G4VisManager.hh" from G4OpenGLXmViewer.cc.
13th July 2004 John Allison (opengl-V06-02-02)
- Hidden line *and* hidden surface removal now works.
9th July 2004 John Allison (opengl-V06-02-01)
- Fixed long-standing problem with hidden line removal.
- Improved messages on failure to get visual.
- Added GLX_STENCIL_SIZE explicit request to visual attributes - most
systems provided by default anyway, so no effect.
1st July 2004 John Allison (opengl-V06-02-00)
- Rationalised G4OpenGLSceneHandler ready for hidden line removal.
- Bug fix in G4OpenGLXmPanningCallbacks.cc for dolly control.
18th June 2004 Gunter Folger (geant4-06-02)
9th June 2004 Gabriele Cosmo (vis-V06-01-03)
7th June 2004 Gabriele Cosmo (vis-V06-01-02)
- GNUmakefile and disclaimer changes - see visualization/History.
9th April 2004 John Allison (vis-V06-01-01 + interfaces-V06-01-00)
- Tagged OpenGL as below. Joint with interfaces-V06-01-00.
7th April 2004 Guy Barrand
- visualization/OpenGL/* : use the G4OpenGL.hh file.
- Added : visualization/OpenGL/include/G4OpenGL.hh to encapsulate
the include of gl/gl.h and gl/glu.h that may be platform dependant.
It permits to rm some #ifdef WIN32 spread in the code. It opens also
the way to the usage of the Apple OpenGL on a Mac.
17th February 2004 John Allison (opengl-V06-00-00)
- Fixed bug #581: wrong order of statements in
G4OpenGLXViewer::~G4OpenGLXViewer (see bug report).
4th October 2003 Gabriele Cosmo (vis-V05-02-01)
- GNUmakefile:
o replaced "digits+hits" with "digits_hits".
- Coworks with "geometry-V05-02-00" and "digits_hits-V05-02-00".
22nd September 2003 John Allison (vis-V05-02-00, greps-V05-02-00)
- Cosmetic change to regularise names:
o changed _Feedback3Dcolo to G4OpenGLXViewerFeedback3Dcolor.
o changed _DepthIndex to G4OpenGLXViewerDepthIndex.
23rd June 2003 Guy Barrand (opengl-V05-01-02)
- Commit a first implementation of G4OpenGLWin32Viewer.
10th June 2003 Gabriele Cosmo (opengl-V05-01-01)
- More fixes for warnings in viewers classes.
- Added inclusion of <windows.h> for WIN32 platforms when GL headers
are included.
05th June 2003 Gabriele Cosmo (opengl-V05-01-00)
- Fixes for porting compilation on WIN32:
o G4OpenGLWin32Viewer[.hh.cc]: removed inclusion of <GL/glx.h>.
o G4OpenGLViewer.cc: replaced local variables near/far with pnear/pfar
since declared 'obsolete' in WIN32 platforms.
27th November 2002 John Allison (vis-V04-01-08)
- Improved algorithm of CompareForKernelVisit.
11th November 2002 John Allison (opengl-V04-01-02)
- Corrected inclusion of G4OpenGLXViewer #ifdef X_DRIVER.
- Added G4OpenGLSceneHandler::AddThis for trajectories and hits - simply
call default but there as a marker and encourager.
- Added tracking and digits+hits/hits to GNUmakefile.
16th October 2002 John Allison (opengl-V04-01-01)
- Fix for WIN32. Now compiles but viewer not implemented.
24th June 2002 John Allison (opengl-V04-01-00)
- Further cosmetic changes in G4OpenGLXViewer.cc for DEC compiler.
10th June 2002 John Allison (opengl-V04-00-03)
- Cosmetic changes for SUN-CC in G4OpenGLXmConvenienceRoutines.cc.
6th June 2002 John Allison (opengl-V04-00-02)
- Cosmetic changes for GNU compiler in G4OpenGLXViewer.cc.
23rd February 2002 John Allison (opengl-V04-00-01)
- Changes to encourage compilation on Windows in preparation for
implementation of G4OpenGLWin32Viewer. Removed spurious includes of
glx.h, unistd.h and assert.h.
24th August 2001 John Allison (vis-V03-02-13)
- Limited the printing of warnings in
G4OpenGLSceneHandler::AddPrimitive (const G4Text& text).
14th August 2001 John Allison (vis-V03-02-11)
- Improved KernelVisitDecision.
- Fixed a few small bugs in multiple "stored" viewers, but see next item.
- There's an outstanding bug in OpenGL Stored. If there is more than
one viewer controlled by a scene handler, after a ClearStore on the
scene handler, e.g., with /vis/scene/notifyHandlers, the first
viewer to get refreshed should trigger the display list rebuild, but
the second need not. However, when the second viewer's turn comes,
the display lists are there, and are called, e.g.,
G4OpenGLStoredXViewer::DrawView calls
G4OpenGLStoredViewer::DrawDisplayLists that calls glCallList, but
nothing appears on the screen. To overcome this there is some
temporary code in G4VViewer::NeedKernelVisit which marks *all*
viewers to force a rebuild. To see the symptoms, comment out that
temporary code and issue these commands:
/vis/verbose c
/control/verbose 2
/vis/scene/create
/vis/scene/add/volume
/vis/sceneHandler/create OGLSX
/vis/viewer/create ! ! 1
/run/beamOn
/vis/viewer/create ! ! 1
/vis/viewer/select viewer-0
/vis/viewer/viewpointThetaPhi 20 20
/vis/viewer/select viewer-1
/vis/viewer/viewpointThetaPhi 40 40
/vis/viewer/set/style surface
/vis/viewer/refresh
/vis/viewer/select viewer-0
/vis/viewer/refresh
/vis/viewer/select viewer-1
/vis/viewer/set/style wireframe
/vis/scene/notifyHandlers
You may have to do this too:
/vis/viewer/select viewer-0
/vis/scene/notifyHandlers
One of the viewers is empty. Curious!!
9th August 2001 John Allison (vis-V03-02-10-00)
- Implemented G4OpenGLStoredSceneHandler::ClearTransientStore()
- Removed G4OpenGLSceneHandler::AddPrimitive (const G4Polymarker&) (it only
invoked G4VSceneHandler::AddPrimitive (const G4Polymarker&) which is
picked up by inheritance anyway.
- Removed lots of unnecessary header files from G4OpenGLStoredSceneHandler.cc.
- Corrected order of calling base class functions in
G4OpenGLStoredSceneHandler::Begin/EndModeling.
24th July 2001 John Allison (vis-V03-02-06)
- G4OpenGLSceneHandler::AddPrimitive (const G4Text&) handles transformation.
14th July 2001 John Allison (opengl-V03-02-00)
- Fixed crash in optimised mode: added Initialise() to viewers so
that windows are opened after viewers are fully constructed.
2nd April 2001 John Allison (opengl-V03-00-01 wrt vis-V03-00-09)
- Tidied G4OpenGLXmViewer callback code. Removed superfluous header files.
7th March 2001 John Allison
- Changed char* to const char* in many places and that gave problems in
calls to Xt and Xm. Hope all's OK. Differences:
cvs diff -r vis-V03-00-06 vis-V03-00-07
25th January 2001 John Allison (opengl-V03-00-00)
- Implemented running re-calculation of up-vector in the case of "object
rotation" (lights move with camera) to prevent "flipping" of view when
camera passes through up-vector. Note that the default is "camera
rotation" (lights do not move with camera, i.e., remain fixed relative
to object) so the default is that this "flipping" can happen. To set
"object rotation" (lights move with camera) use
/vis/lights/move_with_camera true (soon to be
/vis/viewer/set/lights move-with-camera) or click "Object" radio button
on Rotation Panel in OpenGLXm mode.
- Changed some objects to references for efficiency. E.g.:
const G4Vector3D& vp = pView->fVP.GetViewpointDirection ().unit ();
22nd May 2000 John Allison (opengl-V01-01-00)
- Fixed slow response of 2nd window of OpenGLXm. Worked around Mesa bug
by sharing static visuals in G4OpenGLXViewer (Guy Barrand):
static XVisualInfo* vi_single_buffer;
static XVisualInfo* vi_double_buffer;
- Removed ChooseVisual from G4OpenGLXmViewer.cc - done in base class
G4OpenGLXViewer.
- Protected double deletion of window in destructors of G4OpenGLXmViewer
and G4OpenGLXViewer (Guy Barrand).
- Changed requested bits per colour to r,g,b = 1,1,1 in G4OpenGLViewer.cc.
- Corrected order of CreateMainWindow() and InitializeGLView() in X*Viewer
constructors.
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