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<div class="moz-cite-prefix">Sure, I will send you some datasets
after this email. <br>
<br>
We have a very interesting project here at McMaster University to
visualize x-ray diffraction data. The visualization package is
written in C++ using VTK as rendering engine and Qt as GUI
builder. You can find some screenshots together with description
of the software at
<a class="moz-txt-link-freetext" href="http://www.chemistry.mcmaster.ca/facilities/xray/221-max3d">http://www.chemistry.mcmaster.ca/facilities/xray/221-max3d</a>. <br>
<br>
Best,<br>
Weiguang<br>
<br>
<br>
On 29/10/2015 1:12 PM, Aashish Chaudhary wrote:<br>
</div>
<blockquote
cite="mid:CAEw35Z-RUT3iT9K4QGPnudqMheBwoFdbmjKMcRNJYLAg3TZw8Q@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">On Thu, Oct 29, 2015 at 1:07 PM,
Weiguang guan <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:guanw@rhpcs.mcmaster.ca" target="_blank">guanw@rhpcs.mcmaster.ca</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Thanks, Aashish, for confirming it and providing a
workaround. Hope my post + other related posts would
bump it up a bit in the priority list. <br>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>I am sure it will. Can you send me some sample dataset
so that I can play around? Working with real use-cases is
always more fun than using the wavelet or other sample
data we have. Also, if you can share some screen captures,
that would be great (if possible). You can send me an
email privately for those if that's more comfortable. We
always like to hear back from the community. </div>
<div><br>
</div>
<div>Thanks,</div>
<div>- Aashish</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div> <br>
Best,<br>
Weiguang
<div>
<div class="h5"><br>
<br>
On 29/10/2015 12:14 PM, Aashish Chaudhary wrote:<br>
</div>
</div>
</div>
<div>
<div class="h5">
<blockquote type="cite">
<div dir="ltr"><span style="font-size:16px">Hi
Weiguang, </span><br>
<div><span style="font-size:16px"><br>
</span></div>
<div><span style="font-size:16px">Yes, a
true multi volume rendering is not supported
in current GPU mappers. This is a
interesting task and we talked about
implementing it but didn't hit high in our
priority list. I think there could be some
interesting questions / answer related to
this on blending and mixing. </span><span
style="font-size:16px">One thing you could
do (if possible) is that you can combine two
volumes into one with two components
(assuming that each has one) if you need
something soon. Also, I believe the </span><span
style="font-size:16px">texture mapping
mapper works because it crates these
polygonal slices but I would imaging that
even it would not do the right thing
completely (it may look right though) in all
circumstances since its not going to sort
slices between two volumes. </span></div>
<div><span style="font-size:16px"><br>
</span></div>
<div><span style="font-size:16px">- Aashish </span></div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Oct 29, 2015 at
11:59 AM, Weiguang guan <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:guanw@rhpcs.mcmaster.ca"
target="_blank">guanw@rhpcs.mcmaster.ca</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">There were a
few posts in the past about this topic. The
conclusion seemed to be that VTK didn't
support multi-volume rendering in terms of
proper visibility sorting/blending. I'm not
sure it is still true.<br>
<br>
I've done a test where two partially
overlapped volumes are used. I've found that
only the texture mapping mapper can render
them correctly. All the other mappers (GPU
based or ray casting) always have one volume
occlude the other one no matter what
direction the camera is viewing.<br>
<br>
Is vtkImageOcclusionSpectrum designed for
handling multiple volume rendering? Any
comments will be appreciated. Thanks.<br>
<br>
Best,<br>
Weiguang<br>
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-- <br>
<div>
<div dir="ltr"><font face="trebuchet ms,
sans-serif"><i>| Aashish Chaudhary <br>
| Technical Leader <br>
| Kitware Inc. <br>
</i></font>
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-- <br>
<div class="gmail_signature">
<div dir="ltr"><font face="trebuchet ms, sans-serif"><i>|
Aashish Chaudhary <br>
| Technical Leader <br>
| Kitware Inc. <br>
</i></font>
<div><i><font face="trebuchet ms, sans-serif">| </font><a
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