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<p>Hi Mathieu and Thomas,</p>
<p>Thank you for the suggestions.</p>
<p>1) I tried the tetrahedralize filter on my data but I did not get
the results I was expecting. I have a polyhedron which is not
convex (<a class="moz-txt-link-freetext" href="https://postimg.org/image/9s3egl8rz/">https://postimg.org/image/9s3egl8rz/</a>) and the filter fill
the gap as you can see here (<a class="moz-txt-link-freetext" href="https://postimg.org/image/5u1nt6d2h/">https://postimg.org/image/5u1nt6d2h/</a>)
and it is not what I was expecting. Indeed, the initial purpose of
the slice was to visualize the hole.<br>
</p>
2) I tried this fix: <a moz-do-not-send="true"
href="https://gitlab.kitware.com/vtk/vtk/merge_requests/2088"
target="_blank">https://gitlab.kitware.com/<wbr>vtk/vtk/merge_requests/2088</a><br>
only modifying the 2 files (<a
href="https://gitlab.kitware.com/vtk/vtk/merge_requests/2088/diffs#15fe983b62f8470f9429f461e8b010d03b476c0c"
style="box-sizing: border-box; background-color: transparent;
color: rgb(92, 92, 92); text-decoration: none; font-family:
"Source Sans Pro", "Helvetica Neue",
Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans: 2;
text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><strong style="box-sizing:
border-box; font-weight: bold;">Common/DataModel/vtkPolyhedron.cxx<span
class="Apple-converted-space"> </span></strong></a>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<span style="color: rgb(92, 92, 92); font-family: "Source Sans
Pro", "Helvetica Neue", Helvetica, Arial,
sans-serif; font-size: 15px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans: 2;
text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(245, 245,
245); display: inline !important; float: none;"><span
class="Apple-converted-space"> </span></span><a
href="https://gitlab.kitware.com/vtk/vtk/merge_requests/2088/diffs#6df1a223bec663530f25d2d214b6b11611fb9cdf"
style="box-sizing: border-box; background-color: transparent;
color: rgb(92, 92, 92); text-decoration: none; font-family:
"Source Sans Pro", "Helvetica Neue",
Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans: 2;
text-align: left; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px;"><span
class="Apple-converted-space"></span><strong style="box-sizing:
border-box; font-weight: bold;">Common/Core/vtkSetGet.h) <span
class="Apple-converted-space"> </span></strong></a><br>
And compile VTK alone. I used a python script (activating the python
VTK wrapping) to do the test with the vtkCutter function but I ended
having the same exact issue (segfault, no error message) with only
the polyhedron that have more than 1024 faces. I am not sure I
should get the same results if I manage to compile paraview. When I
will manage I will get back to you. <br>
<br>
Thanks,<br>
<br>
Pierre<br>
<br>
<br>
<div class="moz-cite-prefix">On 03-01-17 16:51, Mathieu Westphal
wrote:<br>
</div>
<blockquote
cite="mid:CAC2t4UQgJmMYWDMNm_aQ0ebSJXsy+bTY7f4+MX-5PsqFtFnZpA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi<br>
<br>
Indeed, incorrect copy paste. thanks for pointing it out.<br>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">Mathieu Westphal<br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">On Tue, Jan 3, 2017 at 4:46 PM, T.J.
Corona <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:tj.corona@kitware.com" target="_blank">tj.corona@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 style="word-wrap:break-word">
<div>Hi Mathieu and Pierre,</div>
<div><br>
</div>
<div>Perhaps you meant to point to this “work in progress”
branch?</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="https://gitlab.kitware.com/vtk/vtk/merge_requests/2088"
target="_blank">https://gitlab.kitware.com/<wbr>vtk/vtk/merge_requests/2088</a></div>
<div><br>
</div>
<div>Sincerely,</div>
<div>T.J.</div>
<br>
<div>
<div
style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div
style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div
style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div
style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div
style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div>Thomas J. Corona, Ph.D.<br>
Kitware, Inc.<br>
R&D Engineer<br>
21 Corporate Drive<br>
Clifton Park, NY 12065-8662<br>
Phone: <a moz-do-not-send="true"
href="tel:%28518%29%20881-4443"
value="+15188814443" target="_blank">518-881-4443</a></div>
</div>
</div>
</div>
</div>
</div>
</div>
<div>
<div class="h5">
<br>
<div>
<blockquote type="cite">
<div>On Jan 3, 2017, at 10:18 AM, Mathieu Westphal
<<a moz-do-not-send="true"
href="mailto:mathieu.westphal@kitware.com"
target="_blank">mathieu.westphal@kitware.com</a>>
wrote:</div>
<br
class="m_-768954150740546535Apple-interchange-newline">
<div>
<div dir="ltr">
<div>
<div>
<div>
<div>Hello<br>
<br>
</div>
for your information there is a bug in
the slicing of vtkPolyHedron that can
cause a segfault.<br>
</div>
<div>It looks very much like your error.
It has yet to be corrected.<br>
</div>
<a moz-do-not-send="true"
href="https://gitlab.kitware.com/vtk/vtk/issues/16877"
target="_blank">https://gitlab.kitware.com/<wbr>vtk/vtk/issues/16877</a><br>
<br>
</div>
You can already test this "work in progress"
branch to see if this fixes your issue :<br>
<a moz-do-not-send="true"
href="https://gitlab.kitware.com/vtk/vtk/merge_requests/2304"
target="_blank">https://gitlab.kitware.com/<wbr>vtk/vtk/merge_requests/2304</a><br>
<br>
</div>
<div>You could of course modify your data to
tetrahedron with tetrahedralize filter.<br>
</div>
<div><br>
</div>
Regards,<br>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div
class="m_-768954150740546535gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">Mathieu Westphal<br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">On Tue, Jan 3, 2017
at 4:10 PM, Pierre Van Hauwaert <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:pierre@rtech-engineering.nl"
target="_blank">pierre@rtech-engineering.nl</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div
class="m_-768954150740546535m_-1893844449759964379moz-text-html"
lang="x-unicode"> Hi,<br>
<br>
I am using paraview to visualise my
data. I generate my data using a
combination of the 2 following types (<a
moz-do-not-send="true"
class="m_-768954150740546535m_-1893844449759964379moz-txt-link-freetext"
href="http://www.vtk.org/doc/nightly/html/vtkCellType_8h_source.html"
target="_blank"><a class="moz-txt-link-freetext" href="http://www.vtk.org/doc/nightl">http://www.vtk.org/doc/nightl</a><wbr>y/html/vtkCellType_8h_source.<wbr>html</a>)<br>
<font><a moz-do-not-send="true" class="m_-768954150740546535m_-1893844449759964379code" href="http://www.vtk.org/doc/nightly/html/vtkCellType_8h.html#ab1d6fd1f3177b8a2a32bb018807151f8a06a70888292dc4309e42404af594fbb4" style="font-weight:normal;text-decoration:none;font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(251,252,253)" target="_blank">VTK_VOXEL</a><span style="font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(251,252,253);display:inline!important;float:none"> = 11</span><br>
<span style="font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(251,252,253);display:inline!important;float:none">VTK_POLYHEDRON = 42
</span>I can visualize that data with parview without a problem. But,
because I ended up having a segfault
without any error message when
slicing (Z=0) the data. I decomposed
my data in separate files for each <span style="font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(251,252,253);display:inline!important;float:none">VTK_POLYHEDRON </span></font>in
order to investigate the problem.<br>
<br>
I found out that only the polyhedrons
with the largest size were having the
problem. The limit is somewhere
between the 2 files:<br>
- poly-F1000-2395.vtu : working: 466
points, 928 faces <br>
- poly-F1000-2987.vtu : segfault when
slicing: 546 points, 1088 faces <br>
<br>
So my guess is that there is a limit
for the number of points or the number
of faces that can have the polyhedron
(1024 ?) if I want to be able to use
the slice function.<br>
<br>
My questions are : <br>
1) Is there actually a limitation in
Paraview (VTK?) regarding the number
of faces or the number of the point
that the slice function can handle for
a polyhedron ?<br>
2) If there is this limitation, is
there an option to remove it in
Paraview ? (specific version,
compilation option, etc) <br>
3) If there is this limitation, is
there any work around that exist so I
am able to slice my data ? For example
a different format ?<br>
<br>
<br>
I attached the data to be able to back
up my statement:<br>
<br>
poly-F1000-*.vtu : files describing a
polyhedron each: <br>
poly-F1000.pvd : load all those files<br>
<br>
Biggest file for which the slicing
works (size, name):<br>
34K poly-F1000-2395.vtu<br>
<br>
The 8 biggest files triggering the
crash when doing a slice: (size, name)<br>
38K poly-F1000-2987.vtu<br>
39K poly-F1000-2983.vtu<br>
39K poly-F1000-2935.vtu<br>
39K poly-F1000-2988.vtu<br>
39K poly-F1000-2931.vtu<br>
40K poly-F1000-2937.vtu<br>
40K poly-F1000-2981.vtu<br>
40K poly-F1000-2930.vtu<br>
fail.pvd: load those 8 files<br>
<br>
the other files can be sliced without
any issues<br>
<br>
<br>
Thanks, <br>
<span
class="m_-768954150740546535HOEnZb"><font
color="#888888"> <br>
<font size="3">Pierre </font><br>
<div
class="m_-768954150740546535m_-1893844449759964379moz-signature"><font
size="3"><font size="2"> <br>
-- <br>
R.Tech Engineering B.V. <br>
Eekholt 42 - 1112 XH Diemen
- the Netherlands <br>
Tel: +31 (0) 2 04 95 02 22 <br>
</font></font></div>
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