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<div class="moz-cite-prefix">Il 11/01/13 19:40, Aashish Chaudhary ha
scritto:<br>
</div>
<blockquote
cite="mid:CAEw35Z9cX7sOYYSHdaNzykkyWfW-687H4BiboXkepi3fL8gCDw@mail.gmail.com"
type="cite"><br>
<br>
<div class="gmail_quote">On Fri, Jan 11, 2013 at 7:39 AM, hogan <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:emiliano.pastorelli@gmail.com" target="_blank">emiliano.pastorelli@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi All,<br>
<br>
I just wrote a vrpn server for a magnetic tracker
(WintrackerIII) and I was<br>
trying to use it in a paraview 3 walls Cave test-setup, but so
far without<br>
any success.<br>
<br>
The only two parameters that i successfully manage to
configure through the<br>
GUI and state file of the VRPlugin are EyeTransformMatrix and<br>
ModelTransformMatrix.<br>
<br>
From what I see (my test environment is definitely small, just
3 monitor<br>
assembled so one is the table and two other ones are two
connected walls,<br>
bigger one ready before the end of the month), the
EyeTransformMatrix<br>
doesn't seem to be enough to represent the movement of the
user (or am i<br>
wrong and the problem is just related to the fact that my
test-system is so<br>
small and i can't really explore the movement feeling?<br>
<br>
I tried to attach the tracker to other values like
CameraPosition or<br>
ViewPosition that sounded somehow logical but i get warnings
and errors and<br>
it doesn't work.<br>
</blockquote>
<div><br>
</div>
<div>Hogan, </div>
<div><br>
</div>
<div>The tracker sensor should be attached to the
EyeTransformMatrix if you want head tracking for your system.
Couple of questions: </div>
<div><br>
</div>
<div>1. What version of ParaView are you using? </div>
<div>2. Can you share your State and PVX file with me? </div>
<div>3. What are the units of your tracker? </div>
<div><br>
</div>
<div>We should be able to resolve the issue. </div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Hi Aashish,<br>
</div>
</div>
</blockquote>
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.<br>
Tomorrow from the office I can send you the PVX and the state files,
now I don't have them available.<br>
<br>
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.<br>
<br>
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.<br>
<br>
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).<br>
<br>
Btw, tomorrow I'll send you the files and a sample of the data I get
from the tracker.<br>
Thanks again for your time!<br>
<br>
Best,<br>
H<br>
<br>
<blockquote
cite="mid:CAEw35Z9cX7sOYYSHdaNzykkyWfW-687H4BiboXkepi3fL8gCDw@mail.gmail.com"
type="cite">
<div class="gmail_quote">
<div><br>
</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Any help would be welcome,<br>
Best<br>
H<br>
<br>
<br>
<br>
--<br>
View this message in context: <a moz-do-not-send="true"
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</blockquote>
</div>
<br>
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<div><br>
</div>
-- <br>
| Aashish Chaudhary <br>
| R&D Engineer <br>
| Kitware Inc. <br>
| <a moz-do-not-send="true" href="http://www.kitware.com">www.kitware.com</a>
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