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<div class="moz-cite-prefix">Have just tried it out --- It works
great! Thanks, Lisa.<br>
<br>
Best,<br>
Weiguang<br>
<br>
On 30/10/2015 10:02 AM, Lisa Avila wrote:<br>
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cite="mid:CALZNE9owsvCrEHnDS4jXJ-wz7bVi6SoUXbPnKMh1VO9oi7fmkA@mail.gmail.com"
type="cite">
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<div>Weiguang,<br>
<br>
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That should work - if you run into issues let us know.<br>
<br>
</div>
Lisa<br>
<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Oct 30, 2015 at 9:24 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">
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<div>Actually both. However, rendering disjoint volumes is
most needed in our application. I'll try the "back to
front" rendering option. Thanks.<br>
<br>
Best,<br>
Weiguang
<div>
<div class="h5"><br>
<br>
<br>
On 29/10/2015 3:28 PM, Aashish Chaudhary wrote:<br>
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<div class="gmail_quote">On Thu, Oct 29, 2015 at
3:25 PM, Lisa Avila <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:lisa.avila@kitware.com"
target="_blank">lisa.avila@kitware.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div dir="ltr">
<div>Do you mean that the volumes overlap
in 3D space, or just overlap in image
space? If the volumes overlap in image
space (two disjoint volumes where
sometimes one is in front of the other)
VTK does render this correctly (you need
to turn back to front rendering on in
the culler in the renderer). It is true
that VTK does not correctly handle
volumes that overlap in 3D space, unless
they are aligned and part of the same
volume (multiple components in one
vtkImageData).</div>
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<div><br>
</div>
<div>My understanding (based on some previous
emails) is that they overlap in 3D space. </div>
<div><br>
</div>
<div>- Aashish </div>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
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<div><span><font color="#888888"><br>
<br>
</font></span></div>
<span><font color="#888888">Lisa<br>
<br>
</font></span></div>
<div class="gmail_extra"><br>
<div class="gmail_quote"><span>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>
</span>
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<div>
<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>
<div><i><font face="trebuchet ms,
sans-serif">| </font><a
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href="http://www.kitware.com/company/team/chaudhary.html"
target="_blank">http://www.kitware.com/company/team/chaudhary.html</a></i></div>
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