[Paraview] Possible Bugs in CAVE mode??

[Aashish Chaudhary]

Hi Stephan,

On Tue, Feb 14, 2012 at 9:17 AM, Stephan Rogge
<Stephan.Rogge at tu-cottbus.de>wrote:

> Hi,
>
> yeah. It does help. But honestly I do have some doubts that this is the
> best
> way to provide eye separation control. Since PVX is
> used only at startup this parameter is fixed and all PV scenes running with
> that configuration have to use it. In my case I use
> different scenes with different scales (cm or m). I cannot provide one eye
> separation for all scenes.


True. We talked about it. I guess we can provide an option to override,
meaning if you have it in state file, it will be used and if not it will
fall back to pvx and finally to default. Does this sounds reasonable?

And to use one
> configuration file for each scale of scenes feels very cumbersome. In my
> opinion the state file is a better place for that
> parameter.
>
> BTW: Is it planned to modify OffCenterProjection computation to consider
> the
> eye angle?
>

No. Eye Angle is used for a different method for calculating projection.
But I am curious, how would you like to use eye angle?


> Best regards,
> Stephan
>
> Von: Nikhil Shetty [mailto:nikhil.shetty at kitware.com]
> Gesendet: Dienstag, 14. Februar 2012 14:55
> An: Stephan Rogge
> Cc: paraview at paraview.org
> Betreff: Re: [Paraview] Possible Bugs in CAVE mode??
>
> Hi Stephan,
>
> There was a slight change in that we can now specify eye separation in the
> pvx configuration file. You can set the eye seperation as.
>
> <pvx>
>  <Process Type="client" />
>   <Process Type="server">
>   <EyeSeparation Value="0.065"/>
>  <Machine Name="Front"
> .....
>
> Hope this helps
>
> Regards
> -Nikhil
>
> On Tue, Feb 14, 2012 at 8:48 AM, Stephan Rogge <
> Stephan.Rogge at tu-cottbus.de>
> wrote:
> Hello (again),
>
> regarding the cave stereo issue I was able to put an debug message into the
> vtkCamera and noticed that EyeSeparation is an incredibly small value
> (1E-332).
>  It seems that somewhere the eye separation value is lost which results in
> two
> identical projection matrix and this yields a monocular vision. That would
> explain why stereo is not working....
>
> @Nikhil, if I get you right, you are involved in the VR development of PV?
>
> Thanks,
> Stephan
>
>
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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