[Paraview-developers] Paraview 3.98 Heatracking problem
Emiliano Pastorelli
emiliano.pastorelli at gmail.com
Mon Jan 14 12:01:21 EST 2013
Hi Aashish,
i took away the camera position and left only the EyeTransform matrix to
be controlled by the camera, i put a big object (10x) in the middle of
the scene and tested.
An example to explain the problem i had :
I move the head UP with the object "in front of me". The perspective
changes properly, but at the same time, instead of going "down", the
object comes up too. Shouldnt it be the opposite?
Best,
H
Il 14/01/13 18:56, Aashish Chaudhary ha scritto:
>
>
> On Sun, Jan 13, 2013 at 8:23 PM, Aashish Chaudhary
> <aashish.chaudhary at kitware.com <mailto:aashish.chaudhary at kitware.com>>
> wrote:
>
> Hi,
>
> So this is not right:
>
> <VRInteractorStyles>
> <Style class="vtkVRTrackStyle" proxy="2128"
> property="EyeTransformMatrix">
> <Tracker name="Wtrack.sensor"/>
> </Style>
> <Style class="vtkVRTrackStyle" proxy="2128" property="CameraPosition">
> <Tracker name="Wtrack.sensor"/>
> </Style>
> </VRInteractorStyles>
>
>
> You are trying to move both the eye and the camera? The PVX files
> looks alright. On your other point, when you move the eye (a point
> in space) the rotation will not have any effect (rotation of a
> point?) . But when you tilt your head towards left (lets say 90
> degree rotation) you images (from two viewpoints) should be on top
> of each other.
>
> Now Can you also tell me your objects center and size? One thing
> you may want to do is multiply your transform by 10.0 just to
> verify if it makes any changes to your experience.
>
>
> Thanks,
>
>
> On Sat, Jan 12, 2013 at 12:08 PM, Emiliano Pastorelli
> <emiliano.pastorelli at gmail.com
> <mailto:emiliano.pastorelli at gmail.com>> wrote:
>
> Hi Aashish,
>
> after some thinking (being my first system shaped this way i'm
> having to get aquainted to the concepts still), I realized
> that ok, the point at which the view is aiming doesn't have to
> move indeed, and that the all problem seems to be due to the
> position of the object in the screens.
>
> I hope you can figure out what i did wrong in the config file
> (i bet the problem is there somehow).
>
> Best,
> H
>
> Il 11/01/13 20:27, Aashish Chaudhary ha scritto:
>>
>>> Hi Aashish,
>> I'm using ParaView3.98 RC1 and the in the vrpn server i
>> converted the units in meters as for the vrpn standard,
>> so i guess they should somehow be the right ones.
>> Tomorrow from the office I can send you the PVX and the
>> state files, now I don't have them available.
>>
>>
>> Would it be possible to use / build the ParaView from the
>> master branch. We have couple of nice features there and made
>> some improvements in the code.
>>
>> My feeling while testing on the test-system is that the
>> headtracking lets me change the position of the head a
>> bit around the object, but that I don't achieve a full
>> movement. So for example, if i stand in front of the
>> receiver and then i move on top of it (towards -Z), i
>> don't see the object from above (or in the table-screen
>> as i would expect), but i see a upper-front perspective
>> only, like if the transform matrix of the view cone was
>> changed, but somehow not the position of the user.
>>
>>
>> If you move your head on the top of object you should see the
>> top view of the object. Now if your object is in the front of
>> the projected plane, then you should be able to move even
>> inside it. If it is on the back of the projected plane, then
>> it won't.
>>
>>
>> It might be just a wrong feeling given by the small
>> system or maybe the positioning of the object, but at
>> least this far it doesn't give at all the proper
>> immersive feeling.
>>
>>
>> It depends on the size of the object and its location. Only
>> after looking at your state file and PVX file I can give a
>> precise answer.
>>
>>
>> As a side question still related to my system, i noticed
>> the anaglyph stereo goes completely wrong in the screens,
>> while it is correct (and completely different) in the
>> control display, any suggestion on that? (soon i'll have
>> to switch to paired projectors and passive stereo, so i
>> would like to avoid the same problem there).
>>
>>
>> Hmm..I am aware of this bug.
>>
>>
>> Btw, tomorrow I'll send you the files and a sample of the
>> data I get from the tracker.
>> Thanks again for your time!
>>
>>
>> Sure that would be awesome.
>>
>>
>> Best,
>>
>> H
>>
>>>
>>>
>>> Any help would be welcome,
>>> Best
>>> H
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>> http://the-unofficial-paraview-developers-forum.34153.n6.nabble.com/Paraview-3-98-Heatracking-problem-tp1998.html
>>> Sent from the The Unofficial ParaView Developers
>>> Forum mailing list archive at Nabble.com.
>>> _______________________________________________
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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>
>
>
>
>
> --
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com <http://www.kitware.com>
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