[Paraview] VRPlugin (some feedback)

[Aashish Chaudhary]

On Wed, Feb 8, 2012 at 7:38 AM, Stephan Rogge
<Stephan.Rogge at tu-cottbus.de>wrote:

> Hello,
>
> I’ve start to work intensively with the VRPlugin from git-master and want
> to get some feedback. First of all it works almost great :-). As a tracking
> system I’m using A.R.TrackPack2 with two infrared cameras and their VRPN
> server implementation.
>

Very cool! thanks for sharing the information.

>
> To be able to compile that Plugin some modifications were necessary:
> *  As mentioned in this post (
> http://www.paraview.org/pipermail/paraview/2012-February/023816.html) the
> proxy API undergone some changes. But it seems, that the author of this
> post mixed up the parameter order.  He referred to proxy name and proxy
> group. But it has to be swapped...
> * Not important to me but required  to compile without errors:  In
> vtkVRUIPipe.h the flag QTSOCK is checked for existence. I had to put it in
> manually ("#define QTSOCK 1"). Don't know why.


> Further modifications was necessary in the the vtkVRStyleTracking in order
> to update the HeadPose. The proxygroup name must be changed to "views". The
> group name "interactorstyles" in the post mentioned above is NOT working,
> otherwise the plugin crash, since no proxy or property can be found and the
> pointer are still NULL after configuration.
>
> But so far, I was able to use the VRPlugin in ParaView in a two-side VE
> and I've got the feeling, that virtual object placed in front of the
> screens... :-)
>

Very nice.

>
> Now, I have a kind of problem. When I am moving parallel (left to right)
> to the screens, I can observe a sort of rotation which can be not described
> as moving parallax. It seems, that the rotation point lies in the center of
> my projection displays. Object which came out of screen "standing" not on
> the same position. They are flying around. So, my question is addressed to
> experienced Virtual Reality user: Is this described behavior right or not?
>

If it feels like it rotating around the center of your projection screen
reasonably then it means that stereo is working! if it is too much then
there is a problem of some coordinate transformations.

Let us know if you need some further help.


> Cheers,
> Stephan
>
>
>
>
>
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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