[Paraview] HeadTracking in ParaView CAVE

[Emiliano Pastorelli]

Hi Aashish, today i installed the master ParaView as you suggested.

There is something wrong with the GUI for the VRPlugin, and now it's not 
possible to select anymore the type of the VR connection, not even 
importing a state file. I solved that importing an older version of the 
plugin, with that it works, but so i don't know it the problems are 
fixed. (it took me a while to figure how to use the new FullScreen 
option but then i managed, i was trying to put it in the Server process)

Now somehow once in a while, even after applying the right transform 
matrix to the tracker data, i have the weird effect that once in a 
while, the axis seem to randomly invert. So if until a second before it 
was working fine with the headtracking around an object, suddenly it 
gets wrong on all the four axis. I don't know if it might be a problem 
of my tracker or is something in paraview.
As a test, I saved a working system state, went out of paraview and when 
i restarted and restored the state, the axis were wrong again.

As a side effect, there is a XGrabKeyboard command to remove in the vtk 
filevtkXOpenGLRenderWindow.cxx and if you don't remove it, when paraview 
is running fullscreen you can't use the keyboard anymore, nor in 
paraview nor in other applications.

Best,
Emiliano

Il 28/01/13 23:43, Aashish Chaudhary ha scritto:
> On Mon, Jan 28, 2013 at 4:19 PM, Emiliano Pastorelli 
> <hogancito at gmail.com <mailto:hogancito at gmail.com>> wrote:
>
>     Hi Aashish, perfect, thank you very much! I'll give it a try
>     tomorrow, and if it all works well i'll use it for a demonstration
>     on wednesday, just in time!
>
>
> Great. Let us know if we can help.
>
> Thanks,
>
>
>     Regards,
>     Emiliano
>
>     Il 28/01/13 22:15, Aashish Chaudhary ha scritto:
>>     Hi Emiliano,
>>
>>     I just wanted to let you know that recently we fixed couple of
>>     minor bugs and now they are in ParaView master if you want to
>>     give it a try.
>>
>>     Thanks
>>
>>
>>     On Fri, Jan 11, 2013 at 12:47 PM, Aashish Chaudhary
>>     <aashish.chaudhary at kitware.com
>>     <mailto:aashish.chaudhary at kitware.com>> wrote:
>>
>>
>>
>>         On Thu, Jan 10, 2013 at 9:00 AM, Emiliano Pastorelli
>>         <hogancito at gmail.com <mailto:hogancito at gmail.com>> wrote:
>>
>>             Hi,
>>
>>             I'm having some issues with headtracking in ParaView in a
>>             3 screens environment (2 walls + 1 table). From the GUI
>>             (and also from the config pvsm file, but equal results) I
>>             tried to configure the following propertier connected to
>>             the tracker.
>>
>>             a) Camera Position ( I mentioned it in a previous
>>             message), the vrpn server doesn't seem to feed the proper
>>             argument to the SetCamera function and so it doesn't work.
>>             b) View Position : when i start the vrplugin it gives me
>>             the following message :
>>             Generic Warning: In
>>             /home/hogan/projects/ParaView/ParaViewCore/ServerManager/Core/vtkSMPropertyHelper.cxx,
>>             line 429
>>             Call not supported for the current property type.
>>             And nothing happens.
>>             c) EyeTransformMatrix : close to be working, but when i
>>             move my head around the screens, the object doesn't move
>>             properly around the screens (while if i just move the
>>             object with the mouse, it goes properly across the three
>>             display, moving from one to another according to the
>>             position)
>>             d) ModelTransformMatrix : works properly
>>
>>             Which is the "official" procedure to do the headtracking?
>>             Am I doing something wrong? The fact that it works
>>             properly with the ModelTransformMatrix makes me think
>>             that the vrpn server that i wrote for this tracker works
>>             properly, so i don't get what else i shall modify to
>>             properly track the head movement.
>>
>>
>>         Connecting your sensor to the EyeTransformMatix is the right
>>         thing to do for the head tracking. Is it possible that your
>>         numbers are too small? When you move your head the position
>>         of the object may not move that much depending on your object
>>         is front of the projected plane or behind. If you can send me
>>         your config file, state file and what values you are getting
>>         from your sensor, I can provide you exact explanation.
>>
>>         Thanks,
>>
>>             Any hint is welcome before i go mad!
>>             Best,
>>             Emiliano
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>>
>>
>>
>>         -- 
>>         | Aashish Chaudhary
>>         | R&D Engineer
>>         | Kitware Inc.
>>         | www.kitware.com <http://www.kitware.com> 
>>
>>
>>
>>
>>     -- 
>>     | Aashish Chaudhary
>>     | R&D Engineer
>>     | Kitware Inc.
>>     | www.kitware.com <http://www.kitware.com>
>
>
>
>
> -- 
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com <http://www.kitware.com> 

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