[vtkusers] Problem with vtkContourTriangulator and vtkPlaneCutter

Jeffery Lewis jlewis at accuray.com
Thu Mar 8 11:42:25 EST 2018


Thank you David for investigating this.

Adding the call to SetTolerance() on the vtkCleanPolyData does help. If you play around with the XY squareness slider (particularly to the left), you will still see the problem (even with tolerance set lower to 1e-4).

Does vtkContourTriangulator require no z components in the polygons? I am cutting the surface model in 3D space. The contour generated by vtkCutter is essentially confined to a plane, but the contour polygons have z components in the coordinates (e.g. they are 3D points).

Also, if I replace vtkCutter with vtkPlaneCutter, the program still crashes at start up.

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Subject: vtkusers Digest, Vol 167, Issue 16

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Today's Topics:

   1. Offscreen rendering speed VTK 8.1.0 + Mesa 13.3.3 on headless
      VM (Sophonet)
   2. Re: Problem with vtkContourTriangulator and vtkPlaneCutter
      (David Gobbi)
   3. Compile error building VTK 4.8.6 (Gib Bogle)
   4. Re: Compile error building VTK 4.8.6 (Mike Chinander)
   5. Re: [FORGED] Re:  Compile error building VTK 4.8.6 (Gib Bogle)
   6. Compiling VTK Python from source (ashwin .D)
   7. Re: Compiling VTK Python from source (Aron Helser)
   8. Re: Compiling VTK Python from source (ashwin .D)


----------------------------------------------------------------------

Message: 1
Date: Wed, 07 Mar 2018 18:33:19 +0100
From: Sophonet <vtk12af6bc42 at kant.sophonet.de>
To: vtkusers at vtk.org
Subject: [vtkusers] Offscreen rendering speed VTK 8.1.0 + Mesa 13.3.3
on headless VM
Message-ID: <b180aef39d4c76f110491e766023fd08 at kant.sophonet.de>
Content-Type: text/plain; charset=US-ASCII; format=flowed

Hi list,

for a few weeks, I am experimenting with Offscreen rendering using VTK
8.1.0 and Mesa 13.3.3 on a headless VM (Intel Pentium Broadwell, 2.4 GHz, one core available), and I am wondering what rendering speed would be possible for a 1700x900 renderwindow, when displaying a single vtkImageSlice covering more or less the complete viewport. On my system, rendering of a single image using the WindowToImage filter (RGB, transparency turned off) needs about 300~400 ms, which is a little slow in my opinion. Is there any way to increase speed or is this a realistic value?

I have compiled Mesa 13.3.3 myself according to the settings in https://urldefense.proofpoint.com/v2/url?u=https-3A__www.paraview.org_Wiki_ParaView_ParaView-5FAnd-5FMesa-5F3D&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g3q6h4ItiSwiGI&s=Rl9eGQx8QVlyvHPwwitZCtZMKCFGuhnyhX6jukc_WaY&e=.

What would be the best options for increasing performance (besides making the renderwindow size smaller)? Exposing more cores to the VM?
Some environment variables? (I have played with LP_NUM_THREADS but this did not have an effect). Or according to other experiences, there might be something misconfigured on our system?

Thanks,

     Sophonet



------------------------------

Message: 2
Date: Wed, 7 Mar 2018 12:46:51 -0700
From: David Gobbi <david.gobbi at gmail.com>
To: Jeffery Lewis <jlewis at accuray.com>
Cc: "vtkusers at vtk.org" <vtkusers at vtk.org>
Subject: Re: [vtkusers] Problem with vtkContourTriangulator and
vtkPlaneCutter
Message-ID:
<CANwS1=Ee2TfPFQPdJs5iMmnOjHzB-SbPmh+HUKbSNpaPx5EM5A at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi Jeffery,

I can get your example to work by providing a tolerance to vtkCleanPolyData:

        polygonsContourClean->SetTolerance(1e-6);

A better fix is to clean the toroid itself:

vtkSmartPointer<vtkCleanPolyData> clean = vtkSmartPointer<vtkCleanPolyData>::New();
        clean->SetInputConnection(source->GetOutputPort());
        clean->SetTolerance(1e-4);

The parametric surface has duplicate points where it joins back on itself.
If vtkCleanPolyData isn't given a tolerance, it uses its default tolerance of zero, and isn't able to resolve the duplication.

 - David




On Fri, Mar 2, 2018 at 3:57 PM, Jeffery Lewis <jlewis at accuray.com> wrote:

> I have a prototype that generates a super toroid surface model. A cut
> plane is defined to be orthogonal to the camera line of sight, and
> cuts through the middle of the surface model. The cut contour
> (generated by vtkCutter), and filled cut contour (generated by
> vtkContourTriangulator) is rendered with the surface model. The
> surface model is shown transparent as it is only a reference. The
> rendering of interest is the cut contour (shown as red contour) and
> filled cut contour (shown as green). Moving the mouse rotates the
> surface model. The cut plane stays orthogonal to the camera while the
> surface model rotates. By rotating the surface model, you can see the
> cut contour and filled cut contour get updated interactively as it slices through the middle of the surface model.
>
>
>
> Unfortunately, the filled cut contour does not look right and I can?t
> seem to figure it out. If I change the surface model to something
> simpler like a cone, then everything looks fine.
>
>
>
> Also of note is that if I switch out the vtkCutter with a
> vtkPlaneCutter, the program crashes. I would like to use the
> vtkPlaneCutter since from its documentation seems to indicate that it
> will get better performance. The vtkPlaneCutter crashes using either the super toroid or cone.
>
>
>
> Attached is the source code. The stuff between ?// Setup a slider
> widget for each varying parameter BEGIN? and ?// Setup a slider widget
> for each varying parameter END? can be ignored as this only involves
> setting up sliders to manipulate the super toroid, which comes from
> the ParametricSuperToroidDemo example. The setup of the pipleline for
> the cut contour and filled cut contour is near the bottom.
>
>
>
> Also attached is a sample screen shot of the incorrect filled cut contour.
>
>
>
>
>
>
>
>
>
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> *Jeffery Lewis*
>
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>
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------------------------------

Message: 3
Date: Thu, 8 Mar 2018 04:04:43 +0000
From: Gib Bogle <g.bogle at auckland.ac.nz>
To: "vtkusers at vtk.org" <vtkusers at vtk.org>
Subject: [vtkusers] Compile error building VTK 4.8.6
Message-ID: <1520481883425.84526 at auckland.ac.nz>
Content-Type: text/plain; charset="iso-8859-1"

I am trying to build VTK for x64, something I've done before with MSVC 2010, but not with MSVC 2012.  I get this error compiling WTFString.cpp:


        cl -c -nologo -Zm200 -Zc:wchar_t- -wd4291 -wd4344 -wd4396 -wd4503 -wd480
0 -wd4819 -wd4996 -O2 -MD -GR -EHsc -DUNICODE -DWIN32 -DNDEBUG -DBUILDING_QT__=1  -DNDEBUG -DQT_ASCII_CAST_WARNINGS -D_HAS_TR1=0 -DBUILDING_JavaScriptCore -DBUIL DING_WTF -DQT_NO_DEBUG -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE  -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -I"..\..\..\..\..\include\Q tCore" -I"..\..\..\..\..\include" -I"." -I"..\..\Source" -I"..\ThirdParty" -I"as sembler" -I"bytecode" -I"bytecompiler" -I"heap" -I"dfg" -I"debugger" -I"interpre ter" -I"jit" -I"parser" -I"profiler" -I"runtime" -I"wtf" -I"wtf\gobject" -I"d:\Q t\4.8.6\src\3rdparty\webkit\Source\JavaScriptCore\wtf\symbian" -I"wtf\unicode" - I"yarr" -I"API" -I"ForwardingHeaders" -I"generated" -I"os-win32" -I"..\..\Source " -I"..\..\include" -I"\include\QtWebKit" -I"\include" -I"..\..\..\..\..\include \ActiveQt" -I"tmp\moc\release_shared" -I"..\..\..\..\..\mkspecs\win32-msvc2012"
-Fotmp\obj\release_shared\ @C:\Users\mbog002\AppData\Local\Temp\WTFString.obj.29
08.4805.jom
WTFString.cpp
.\wtf/HashSet.h(180) : error C2664: 'std::pair<_Ty1,_Ty2>::pair(const std::pair< _Ty1,_Ty2> &)' : cannot convert parameter 1 from 'std::pair<_Ty1,_Ty2>' to 'const std::pair<_Ty1,_Ty2> &'

...


(there are many more lines, but probably not adding more useful info).


The error seems to be from Hashset.h, about here:


    template<typename T, typename U, typename V>
    inline pair<typename HashSet<T, U, V>::iterator, bool> HashSet<T, U, V>::add(const ValueType& value)
    {
        return m_impl.add(value);
    }


I'm afraid this is way beyond my level  of C++ expertise - I don't use templates.  Is this error the result of a change between MSVC 2010 and 2012?  How can I avoid this error?


Thanks

Gib
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------------------------------

Message: 4
Date: Wed, 7 Mar 2018 22:44:23 -0600
From: Mike Chinander <chinander at gmail.com>
To: "vtkusers at vtk.org" <vtkusers at vtk.org>
Subject: Re: [vtkusers] Compile error building VTK 4.8.6
Message-ID:
<CAEb_q0ebc5TZabJvBvhEZS7Z0p0Y_1KsK+YMwbxyMVpUAsLZ4w at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Are you compiling VTK here or Qt 4.8.6? See https://urldefense.proofpoint.com/v2/url?u=https-3A__bugreports.qt.io_browse_QTBUG-2D28335&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g3q6h4ItiSwiGI&s=wec0p3Mqb8h_QsTfYJ6ojsBTItQbnKyDztXsUoTMC7U&e= for a possible fix.

If it's an option for you (i.e., not trying build legacy code), I'd recommend using newer versions of VTK and Qt (and compiler).

Good luck,

--Mike

On Wed, Mar 7, 2018 at 10:04 PM, Gib Bogle <g.bogle at auckland.ac.nz> wrote:

> I am trying to build VTK for x64, something I've done before with MSVC
> 2010, but not with MSVC 2012.  I get this error compiling WTFString.cpp:
>
>
>         cl -c -nologo -Zm200 -Zc:wchar_t- -wd4291 -wd4344 -wd4396
> -wd4503
> -wd480
> 0 -wd4819 -wd4996 -O2 -MD -GR -EHsc -DUNICODE -DWIN32 -DNDEBUG
> -DBUILDING_QT__=1
>  -DNDEBUG -DQT_ASCII_CAST_WARNINGS -D_HAS_TR1=0
> -DBUILDING_JavaScriptCore -DBUIL DING_WTF -DQT_NO_DEBUG -DQT_CORE_LIB
> -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE  -DQT_HAVE_MMXEXT
> -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -I"..\..\..\..\..\include\Q tCore"
> -I"..\..\..\..\..\include" -I"." -I"..\..\Source" -I"..\ThirdParty"
> -I"as
> sembler" -I"bytecode" -I"bytecompiler" -I"heap" -I"dfg" -I"debugger"
> -I"interpre
> ter" -I"jit" -I"parser" -I"profiler" -I"runtime" -I"wtf" -I"wtf\gobject"
> -I"d:\Q
> t\4.8.6\src\3rdparty\webkit\Source\JavaScriptCore\wtf\symbian"
> -I"wtf\unicode" -
> I"yarr" -I"API" -I"ForwardingHeaders" -I"generated" -I"os-win32"
> -I"..\..\Source
> " -I"..\..\include" -I"\include\QtWebKit" -I"\include"
> -I"..\..\..\..\..\include
> \ActiveQt" -I"tmp\moc\release_shared" -I"..\..\..\..\..\mkspecs\
> win32-msvc2012"
> -Fotmp\obj\release_shared\ @C:\Users\mbog002\AppData\
> Local\Temp\WTFString.obj.29
> 08.4805.jom
> WTFString.cpp
> .\wtf/HashSet.h(180) : error C2664: 'std::pair<_Ty1,_Ty2>::pair(const
> std::pair< _Ty1,_Ty2> &)' : cannot convert parameter 1 from
> 'std::pair<_Ty1,_Ty2>' to 'const std::pair<_Ty1,_Ty2> &'
>
> ...
>
>
> (there are many more lines, but probably not adding more useful info).
>
>
> The error seems to be from Hashset.h, about here:
>
>
>     template<typename T, typename U, typename V>
>     inline pair<typename HashSet<T, U, V>::iterator, bool> HashSet<T,
> U,
> V>::add(const ValueType& value)
>     {
>         return m_impl.add(value);
>     }
>
>
> I'm afraid this is way beyond my level  of C++ expertise - I don't use
> templates.  Is this error the result of a change between MSVC 2010 and
> 2012?  How can I avoid this error?
>
>
> Thanks
>
> Gib
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.kitware.com_&d
> =DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rts
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------------------------------

Message: 5
Date: Thu, 8 Mar 2018 04:57:25 +0000
From: Gib Bogle <g.bogle at auckland.ac.nz>
To: Mike Chinander <chinander at gmail.com>, "vtkusers at vtk.org"
<vtkusers at vtk.org>
Subject: Re: [vtkusers] [FORGED] Re:  Compile error building VTK 4.8.6
Message-ID: <1520485037221.48838 at auckland.ac.nz>
Content-Type: text/plain; charset="iso-8859-1"

Sorry, my slip, of course I meant Qt 4.8.6.

I think that fix should work for me - this is old code that I don't want to mess with.

Thanks a lot!


Gib

________________________________
From: vtkusers <vtkusers-bounces at vtk.org> on behalf of Mike Chinander <chinander at gmail.com>
Sent: Thursday, 8 March 2018 5:44 p.m.
To: vtkusers at vtk.org
Subject: [FORGED] Re: [vtkusers] Compile error building VTK 4.8.6

Are you compiling VTK here or Qt 4.8.6? See https://urldefense.proofpoint.com/v2/url?u=https-3A__bugreports.qt.io_browse_QTBUG-2D28335&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g3q6h4ItiSwiGI&s=wec0p3Mqb8h_QsTfYJ6ojsBTItQbnKyDztXsUoTMC7U&e= for a possible fix.

If it's an option for you (i.e., not trying build legacy code), I'd recommend using newer versions of VTK and Qt (and compiler).

Good luck,

--Mike

On Wed, Mar 7, 2018 at 10:04 PM, Gib Bogle <g.bogle at auckland.ac.nz<mailto:g.bogle at auckland.ac.nz>> wrote:

I am trying to build VTK for x64, something I've done before with MSVC 2010, but not with MSVC 2012.  I get this error compiling WTFString.cpp:


        cl -c -nologo -Zm200 -Zc:wchar_t- -wd4291 -wd4344 -wd4396 -wd4503 -wd480
0 -wd4819 -wd4996 -O2 -MD -GR -EHsc -DUNICODE -DWIN32 -DNDEBUG -DBUILDING_QT__=1  -DNDEBUG -DQT_ASCII_CAST_WARNINGS -D_HAS_TR1=0 -DBUILDING_JavaScriptCore -DBUIL DING_WTF -DQT_NO_DEBUG -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE  -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -I"..\..\..\..\..\include\Q tCore" -I"..\..\..\..\..\include" -I"." -I"..\..\Source" -I"..\ThirdParty" -I"as sembler" -I"bytecode" -I"bytecompiler" -I"heap" -I"dfg" -I"debugger" -I"interpre ter" -I"jit" -I"parser" -I"profiler" -I"runtime" -I"wtf" -I"wtf\gobject" -I"d:\Q t\4.8.6\src\3rdparty\webkit\Source\JavaScriptCore\wtf\symbian" -I"wtf\unicode" - I"yarr" -I"API" -I"ForwardingHeaders" -I"generated" -I"os-win32" -I"..\..\Source " -I"..\..\include" -I"\include\QtWebKit" -I"\include" -I"..\..\..\..\..\include \ActiveQt" -I"tmp\moc\release_shared" -I"..\..\..\..\..\mkspecs\win32-msvc2012"
-Fotmp\obj\release_shared\ @C:\Users\mbog002\AppData\Local\Temp\WTFString.obj.29
08.4805.jom
WTFString.cpp
.\wtf/HashSet.h(180) : error C2664: 'std::pair<_Ty1,_Ty2>::pair(const std::pair< _Ty1,_Ty2> &)' : cannot convert parameter 1 from 'std::pair<_Ty1,_Ty2>' to 'const std::pair<_Ty1,_Ty2> &'

...


(there are many more lines, but probably not adding more useful info).


The error seems to be from Hashset.h, about here:


    template<typename T, typename U, typename V>
    inline pair<typename HashSet<T, U, V>::iterator, bool> HashSet<T, U, V>::add(const ValueType& value)
    {
        return m_impl.add(value);
    }


I'm afraid this is way beyond my level  of C++ expertise - I don't use templates.  Is this error the result of a change between MSVC 2010 and 2012?  How can I avoid this error?


Thanks

Gib

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------------------------------

Message: 6
Date: Thu, 8 Mar 2018 17:15:51 +0530
From: "ashwin .D" <winash12 at gmail.com>
To: vtkusers at vtk.org
Subject: [vtkusers] Compiling VTK Python from source
Message-ID:
<CAH0LXy7vsbs+wymujV-QAjtJ3jiccSe-eSue9vzDNqRencvv1A at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hello,
           I have VTK 7.0.0 tar file and I am trying to compile from source the python wrapper for VTK. I have ccmake installed on my Ubuntu 16.04 box but no matter what I try(the installation itself proceeds with no errors) but I cannot find out where the python wrapper for SDK is present. When I type

python3.5  import vtk

I get ImportError : no module named 'vtk`

Here is how I built VTK for python using ccmake


ccmake -DCMAKE_INSTALL_PREFIX=/opt/local/vtk7.0-py3.5.0
-DBUILD_SHARED_LIBS:BOOL=ON-DVTK_WRAP_PYTHON:BOOL=ON
-DVTK_PYTHON_VERSION:STRING=3.5 -DPYTHON_EXECUTABLE:PATH=/usr/bin/python3.5
-DPYTHON_INCLUDE_DIR=/usr/include/python3.5
-DPYTHON_LIBRARY:PATH=/usr/local/lib/python3.5/ ..VTK-7.0.0

Then a ccmake window pops up and I type ctcl - c twice and ctrl-g once. But this does not do the job.

Any suggestions will be appreciated. I intend to use VTK with Mayavi eventually.

Best regards,
Ashwin.
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------------------------------

Message: 7
Date: Thu, 8 Mar 2018 09:04:33 -0500
From: Aron Helser <aron.helser at kitware.com>
To: "ashwin .D" <winash12 at gmail.com>
Cc: VTK Users <vtkusers at vtk.org>
Subject: Re: [vtkusers] Compiling VTK Python from source
Message-ID:
<CAF2skS6fF+OpxK4beYJBgs4YBe7QUQq5LrYQ5qSTHWccLi_A2w at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Do you have a 'vtkpython.exe' in your build/bin directory? That means that you have successfully compiled the wrappers. If you run 'vtkpython' and then 'import vtk', it should work.
vtkpython is basically a thin wrapper that sets up paths so that 'iimport vtk' works.

This wiki: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.paraview.org_Wiki_ParaView_Python-5FScripting&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g3q6h4ItiSwiGI&s=2zzYzkGRyAF-UJ1oeiPsQjIJvwbTAkkwhQ9k3RHcEDw&e= has some info on how to set environment vars so you can run python and import vtk or paraview without using vtkpython/pvpython.

HTH,
Aron

On Thu, Mar 8, 2018 at 6:45 AM, ashwin .D <winash12 at gmail.com> wrote:

> Hello,
>            I have VTK 7.0.0 tar file and I am trying to compile from
> source the python wrapper for VTK. I have ccmake installed on my
> Ubuntu
> 16.04 box but no matter what I try(the installation itself proceeds
> with no
> errors) but I cannot find out where the python wrapper for SDK is present.
> When I type
>
> python3.5  import vtk
>
> I get ImportError : no module named 'vtk`
>
> Here is how I built VTK for python using ccmake
>
>
> ccmake -DCMAKE_INSTALL_PREFIX=/opt/local/vtk7.0-py3.5.0
> -DBUILD_SHARED_LIBS:BOOL=ON-DVTK_WRAP_PYTHON:BOOL=ON
> -DVTK_PYTHON_VERSION:STRING=3.5
> -DPYTHON_EXECUTABLE:PATH=/usr/bin/python3.5
> -DPYTHON_INCLUDE_DIR=/usr/include/python3.5
> -DPYTHON_LIBRARY:PATH=/usr/local/lib/python3.5/
> ..VTK-7.0.0
>
> Then a ccmake window pops up and I type ctcl - c twice and ctrl-g once.
> But this does not do the job.
>
> Any suggestions will be appreciated. I intend to use VTK with Mayavi
> eventually.
>
> Best regards,
> Ashwin.
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.kitware.com_&d
> =DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rts
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> NgE8sR4xSZ71gPxwL3wObqU57506fo&e=
> opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.vtk.org_Wiki_V
> TK-5FFAQ&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTI
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> kJjNrveQDCgxUOcNp643Fzo0eHf51K3kLhEfrJmg&e=
>
> Search the list archives at:
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> h_-3Fq-3Dvtkusers&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgM
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------------------------------

Message: 8
Date: Thu, 8 Mar 2018 19:53:27 +0530
From: "ashwin .D" <winash12 at gmail.com>
To: Aron Helser <aron.helser at kitware.com>
Cc: VTK Users <vtkusers at vtk.org>
Subject: Re: [vtkusers] Compiling VTK Python from source
Message-ID:
<CAH0LXy7S_sG73HWXEFjJEbvyWUkcb0eA8HY0doV2+nKrZahsEA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Thanks for your response. I was not sure really and I did a make clean again and this time ran cmake as opposed to ccmake. and  I am getting a few undefined references and they are related to Python. I have enclosed the log file. Any suggestions will be appreciated.

On Thu, Mar 8, 2018 at 7:34 PM, Aron Helser <aron.helser at kitware.com> wrote:

> Do you have a 'vtkpython.exe' in your build/bin directory? That means
> that you have successfully compiled the wrappers. If you run
> 'vtkpython' and then 'import vtk', it should work.
> vtkpython is basically a thin wrapper that sets up paths so that
> 'iimport vtk' works.
>
> This wiki:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.paraview.org_
> Wiki_ParaView_Python-5FScripting&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoGTItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g3q6h4ItiSwiGI&s=2zzYzkGRyAF-UJ1oeiPsQjIJvwbTAkkwhQ9k3RHcEDw&e= has some info on how to set environment vars so you can run python and import vtk or paraview without using vtkpython/pvpython.
>
> HTH,
> Aron
>
> On Thu, Mar 8, 2018 at 6:45 AM, ashwin .D <winash12 at gmail.com> wrote:
>
>> Hello,
>>            I have VTK 7.0.0 tar file and I am trying to compile from
>> source the python wrapper for VTK. I have ccmake installed on my
>> Ubuntu
>> 16.04 box but no matter what I try(the installation itself proceeds
>> with no
>> errors) but I cannot find out where the python wrapper for SDK is present.
>> When I type
>>
>> python3.5  import vtk
>>
>> I get ImportError : no module named 'vtk`
>>
>> Here is how I built VTK for python using ccmake
>>
>>
>> ccmake -DCMAKE_INSTALL_PREFIX=/opt/local/vtk7.0-py3.5.0
>> -DBUILD_SHARED_LIBS:BOOL=ON-DVTK_WRAP_PYTHON:BOOL=ON
>> -DVTK_PYTHON_VERSION:STRING=3.5
>> -DPYTHON_EXECUTABLE:PATH=/usr/bin/python3.5
>> -DPYTHON_INCLUDE_DIR=/usr/include/python3.5
>> -DPYTHON_LIBRARY:PATH=/usr/local/lib/python3.5/ ..VTK-7.0.0
>>
>> Then a ccmake window pops up and I type ctcl - c twice and ctrl-g once.
>> But this does not do the job.
>>
>> Any suggestions will be appreciated. I intend to use VTK with Mayavi
>> eventually.
>>
>> Best regards,
>> Ashwin.
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.kitware.com_o
>> pensource_opensource.html&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfX
>> HHQX-uhgMiAohLoGTItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g
>> 3q6h4ItiSwiGI&s=QfIydYrDX9ALiUVj80h6C-G0h4SPJKUUTTU_PVO6Xj4&e=
>>
>> Please keep messages on-topic and check the VTK FAQ at:
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.vtk.org_Wiki_
>> VTK-5FFAQ&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uhgMiAohLoG
>> TItPHXF-7rtsYkItEKmE&m=QkA8b-0zqbespemNmP5PLLtFdagY8g3q6h4ItiSwiGI&s=
>> XUSkJjNrveQDCgxUOcNp643Fzo0eHf51K3kLhEfrJmg&e=
>>
>> Search the list archives at:
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__markmail.org_sear
>> ch_-3Fq-3Dvtkusers&d=DwICAg&c=xPsIBl5KrHsS6I-OqwKVfQ&r=D9BdhfXHHQX-uh
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>> iSwiGI&s=s3MYXuM7o87yR90LCp6Sg0strumq7KKX4hbIsp7fQRg&e=
>>
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End of vtkusers Digest, Vol 167, Issue 16
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