Hi Mathieu and Thomas,
Thank you for the suggestions.
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
(https://postimg.org/image/9s3egl8rz/) and the filter fill the gap as
you can see here (https://postimg.org/image/5u1nt6d2h/) and it is not
what I was expecting. Indeed, the initial purpose of the slice was to
visualize the hole.
2) I tried this fix:
https://gitlab.kitware.com/vtk/vtk/merge_requests/2088
<https://gitlab.kitware.com/vtk/vtk/merge_requests/2088>
only modifying the 2 files (*Common/DataModel/vtkPolyhedron.cxx*
<https://gitlab.kitware.com/vtk/vtk/merge_requests/2088/diffs#15fe983b62f8470f9429f461e8b010d03b476c0c>
*Common/Core/vtkSetGet.h) *
<https://gitlab.kitware.com/vtk/vtk/merge_requests/2088/diffs#6df1a223bec663530f25d2d214b6b11611fb9cdf>
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.
Thanks,
Pierre
On 03-01-17 16:51, Mathieu Westphal wrote:
Hi
Indeed, incorrect copy paste. thanks for pointing it out.
Mathieu Westphal
On Tue, Jan 3, 2017 at 4:46 PM, T.J. Corona <[email protected]
<mailto:[email protected]>> wrote:
Hi Mathieu and Pierre,
Perhaps you meant to point to this “work in progress” branch?
https://gitlab.kitware.com/vtk/vtk/merge_requests/2088
<https://gitlab.kitware.com/vtk/vtk/merge_requests/2088>
Sincerely,
T.J.
Thomas J. Corona, Ph.D.
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4443 <tel:%28518%29%20881-4443>
On Jan 3, 2017, at 10:18 AM, Mathieu Westphal
<[email protected]
<mailto:[email protected]>> wrote:
Hello
for your information there is a bug in the slicing of
vtkPolyHedron that can cause a segfault.
It looks very much like your error. It has yet to be corrected.
https://gitlab.kitware.com/vtk/vtk/issues/16877
<https://gitlab.kitware.com/vtk/vtk/issues/16877>
You can already test this "work in progress" branch to see if
this fixes your issue :
https://gitlab.kitware.com/vtk/vtk/merge_requests/2304
<https://gitlab.kitware.com/vtk/vtk/merge_requests/2304>
You could of course modify your data to tetrahedron with
tetrahedralize filter.
Regards,
Mathieu Westphal
On Tue, Jan 3, 2017 at 4:10 PM, Pierre Van Hauwaert
<[email protected]
<mailto:[email protected]>> wrote:
Hi,
I am using paraview to visualise my data. I generate my data
using a combination of the 2 following types
(http://www.vtk.org/doc/nightly/html/vtkCellType_8h_source.html
<http://www.vtk.org/doc/nightly/html/vtkCellType_8h_source.html>)
VTK_VOXEL
<http://www.vtk.org/doc/nightly/html/vtkCellType_8h.html#ab1d6fd1f3177b8a2a32bb018807151f8a06a70888292dc4309e42404af594fbb4>=
11
VTK_POLYHEDRON = 42 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 VTK_POLYHEDRON
in order to investigate the problem.
I found out that only the polyhedrons with the largest size
were having the problem. The limit is somewhere between the 2
files:
- poly-F1000-2395.vtu : working: 466 points, 928 faces
- poly-F1000-2987.vtu : segfault when slicing: 546 points,
1088 faces
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.
My questions are :
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 ?
2) If there is this limitation, is there an option to remove
it in Paraview ? (specific version, compilation option, etc)
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 ?
I attached the data to be able to back up my statement:
poly-F1000-*.vtu : files describing a polyhedron each:
poly-F1000.pvd : load all those files
Biggest file for which the slicing works (size, name):
34K poly-F1000-2395.vtu
The 8 biggest files triggering the crash when doing a slice:
(size, name)
38K poly-F1000-2987.vtu
39K poly-F1000-2983.vtu
39K poly-F1000-2935.vtu
39K poly-F1000-2988.vtu
39K poly-F1000-2931.vtu
40K poly-F1000-2937.vtu
40K poly-F1000-2981.vtu
40K poly-F1000-2930.vtu
fail.pvd: load those 8 files
the other files can be sliced without any issues
Thanks,
Pierre
--
R.Tech Engineering B.V.
Eekholt 42 - 1112 XH Diemen - the Netherlands
Tel: +31 (0) 2 04 95 02 22
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