[Paraview] Cave mode for 3.8

Aashish Chaudhary aashish.chaudhary at kitware.com
Wed Apr 28 16:21:14 EDT 2010


On Wed, Apr 28, 2010 at 3:37 PM, Eric E. Monson <emonson at cs.duke.edu> wrote:

> Hey Aashish,
>
> Here is the info I got from David Zielinski, who is the programmer and
> technical expert on our 6-sided VR cave here at Duke:
>
> We are using an intersense is-900. We currently have both VRPN and trackd
> installed.
>
> Also, for stereo cameras in VR to work correctly they need to be drawn
> using asymmetric frustums.
> http://www.orthostereo.com/geometryopengl.html
>
>
> So, it looks like he commonly uses VRPN as an interface layer to both the
> head tracker and a wand. Since ParaView supports some sort of Cave mode, I
> guess we're curious about some aspects of how things are done and what
> already exists (or could be written):
>
> 1. Is the stereo viewing in Cave mode done with asymmetric frustums?
>

I will let Julien or Utkarsh answer this. I didn't look at the
implementation yet.


> 2. Could a client be built to change the viewpoint based on the head
> tracker?
>

I think this should not be difficult. Specially since IS900 configuration is
not that hard and lot of things are taken care by VRPN already.  Actually
you just need eye position for head tracking (unless you want to use
orientation information for something else).


> 3. Is it possible to also take in the wand data to change the view or
> manipulate widgets?
>
> Again not looking inside the code, fundamentally this should not be
difficult (could be tricky though depending upon the implementation).


> Thanks for the help,
> -Eric
>
>
> On Apr 28, 2010, at 1:46 PM, Aashish Chaudhary wrote:
>
> Someone can write a very simple client using VRPN (
> http://www.cs.unc.edu/Research/vrpn) for ParaView.
>
> Eric, do you know the hardware these folks are using for tracking?
>
> ~Regards,
> Aashish
>
>
> On Wed, Apr 28, 2010 at 1:28 PM, Utkarsh Ayachit <
> utkarsh.ayachit at kitware.com> wrote:
>
>> There's no tracking functionality provided yet. The user is expected
>> to interact from the client terminal. Of course, the community is more
>> than welcome to come up with drivers to drive the client using head
>> tracking devices as an input :).
>>
>> Utkarsh
>>
>> On Wed, Apr 28, 2010 at 12:57 PM, Eric E. Monson <emonson at cs.duke.edu>
>> wrote:
>> > Hey Julien,
>> > Someone was asking me recently, and maybe you know the answer: How to
>> people
>> > interact with ParaView when running in Cave mode? Is there any support
>> for
>> > head tracking?
>> > Thanks,
>> > -Eric
>> > ------------------------------------------------------
>> > Eric E Monson
>> > Duke Visualization Technology Group
>> >
>> > On Apr 28, 2010, at 11:14 AM, Julien Finet wrote:
>> >
>> > Hi Augusto,
>> > Yes, the cave mode is supported by ParaView 3.8 RC1.
>> > See the following wiki page for instructions to use the cave:
>> >
>> http://paraview.org/Wiki/Configuring_Server_Environment_Using_*.pvx_XML_Files#Cave_Rendering
>> >
>> > Please let me know if you have any question or if you encounter
>> problems,
>> > I'll be happy to update the wiki page with the issues you encounter.
>> > Regards,
>> > Julien.
>> > ---------- Forwarded message ----------
>> > From: Augusto Escobar <augustomescobar at gmail.com>
>> > Date: Mon, Apr 26, 2010 at 2:29 PM
>> > Subject: [Paraview]  Cave mode for 3.8
>> > To: ParaView <paraview at paraview.org>
>> >
>> >
>> > Is cave mode working for Paraview 3.8 RC1?
>> >
>> > Do you have a tutorial that teachs how to make it works since the MPI
>> > configuration?
>> >
>> > --
>> > Abraços,
>> > Augusto Escobar
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>
>
>
> --
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com
>
>
>


-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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