Re: [ROOT] TPGON and OpenGL - X3D and Shift interface

From: Christian Holm Christensen (cholm@nbi.dk)
Date: Wed Nov 17 2004 - 17:27:59 MET


Hi Rene, 

On Wed, 2004-11-17 at 08:57 +0100, Rene Brun wrote:
> Hi Christian,
> 
> Christian Holm Christensen wrote:
> > 
> > Hi Again,
> > 
> > On Tue, 2004-11-16 at 16:18 +0100, Rene Brun wrote:
> > > Christian,
> > >
> > > I cannot comment on Castor. The installation procedure works OK on Unix systems
> > > and Windows. This is OK.
> > 
> > I think I didn't make myself clear:  Where do I get the source code for
> > the SHIFT libraries ROOT requires?  Is is at
> > 
> >            http://savannah.cern.ch/projects/castor/
> > 
> > If so, shouldn't the options really be changed to `--with-castor-libdir'
> > etc.?
> 
> OK, the castor site has changed to a completly new site last week!
> The page you are quoting seems to be the right page for downloading Castor.

OK.

> I have updated the link on our installation page. I assume that the pointer
> to your link is obsolete too.

If it's the link to `http://cholm.home.cern.ch/cholm' in the
`README/INSTALL' file, then yes, it's obsolete too. 
 
> > OK.  Why not remove the code from CVS, as it's not functional at all?
> > 
> 
> Yes, as I said, we will remove it at the time of the release.
> We are leaving time to react to some previous users who had built theit viewers
> based on the OI viewer.

OK.

> > The new OpenGL viewer is indeed very nice.  A few questions:
> > 
> >       * However, I really miss the possibility of saving the current
> >         scene to a file (.eps, .gif, .jpg, .svg, or what not) - but I
> >         guess I'm not the first to raise that point :-) And I'm sure
> >         you're dealing with it.
> 
> We want to provide the same functionality as we do now with the normal TPad.
> We are also considering a TPadGL class that could be embedded in a normal
> canvas.

Great!

> >       * Would it be possible to hide the  light sources too?  Ofcourse,
> >         one can simply turn them off, but that removes the light too.
> 
> There are still many things to do with the lights. We are currently designing
> important extensions to the GL viewer to load dynamically the GL scene
> whenever a mouse event is triggered and also giving the possibility to the user
> to move around the scene (as opposed to the user rotating the scene).
> The lights are somehow connected to this problem.

Great!

> >       * In the attached script (a simplified version of the the ALICE
> >         FMD3 geometry), the XTRU objects are not drawn right when you
> >         look from the nose of the support cone, while they look find
> >         when viewed from the back of the cone.  When I turn on wireframe
> >         display in the OpenGL viewer, I see that the XTRU objects
> >         contain more lines than I've defined.  It seems that one of the
> >         triangles that make up the XTRU object is `dominating'.
> 
> OK, we take note of this problem and will try to fix it before our coming
> development release.

Great!

Thank you for your help. 

Yours,

-- 
 ___  |  Christian Holm Christensen 
  |_| |  -------------------------------------------------------------
    | |  Address: Sankt Hansgade 23, 1. th.  Phone:  (+45) 35 35 96 91
     _|           DK-2200 Copenhagen N       Cell:   (+45) 24 61 85 91
    _|            Denmark                    Office: (+45) 353  25 404
 ____|   Email:   cholm@nbi.dk               Web:    www.nbi.dk/~cholm
 | |



This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:10 MET