[vtkusers] Migration to VTK6

[Arno Klein]

'gcc tmp.cpp' created an 'a.out' file, and I have been able to compile
other things, so I guess my Xcode installation is fine.  What do you
recommend I try next?

Cheers,
@rno

On Thu, Dec 10, 2015 at 7:52 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> The header unistd.h is posix standard and comes with every Xcode SDK.  Try
> compiling the following trivial program.  If it doesn't compile, then there
> must be something awry with your Xcode installation:
>
> #include <unistd.h>
> int main()
> {
>   return 0;
> }
>
>  - David
>
> On Thu, Dec 10, 2015 at 7:39 PM, Arno Klein <binarybottle at gmail.com>
> wrote:
>
>> Thank you for your help!
>>
>> I am now able to compile with cmake on linux, but get the following error
>> on macosx 10.11, even though there is no "unistd.h" anywhere in my github
>> repo (https://github.com/nipy/mindboggle/issues/69):
>>
>> Scanning dependencies of target FsSurfaceReader
>> [ 3%] Building CXX object
>> CMakeFiles/FsSurfaceReader.dir/FsSurfaceReader.cpp.o
>> In file included from
>> /software/mindboggle/surface_cpp_tools/FsSurfaceReader.cpp:13:
>> In file included from
>> /software/mindboggle/surface_cpp_tools/FsSurfaceReader.h:16:
>> In file included from /usr/local/include/vtk-6.0/vtkPolyData.h:58:
>> In file included from /usr/local/include/vtk-6.0/vtkPointSet.h:30:
>> In file included from /usr/local/include/vtk-6.0/vtkDataSet.h:41:
>> In file included from /usr/local/include/vtk-6.0/vtkDataObject.h:36:
>> In file included from /usr/local/include/vtk-6.0/vtkObject.h:42:
>> In file included from /usr/local/include/vtk-6.0/vtkObjectBase.h:44:
>> In file included from /usr/local/include/vtk-6.0/vtkIndent.h:25:
>> In file included from /usr/local/include/vtk-6.0/vtkSystemIncludes.h:36:
>> In file included from /usr/local/include/vtk-6.0/vtkIOStream.h:33:
>> In file included from
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iostream:37:
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:23:10:
>> fatal error:
>> 'unistd.h' file not found
>> #include
>> ^
>> 1 error generated.
>> make[2]: *** [CMakeFiles/FsSurfaceReader.dir/FsSurfaceReader.cpp.o] Error
>> 1
>> make[1]: *** [CMakeFiles/FsSurfaceReader.dir/all] Error 2
>> make: *** [all] Error 2
>>
>> Cheers,
>> @rno
>>
>> On Thu, Dec 3, 2015 at 6:25 AM, David E DeMarle <dave.demarle at kitware.com
>> > wrote:
>>
>>> I agree with Cory on Update() being redundant before the Write().
>>>
>>> >    vtkDataObject* dobj = someAlgorithm->GetOutput(1);
>>> >    dobj->Update();
>>>
>>> should become:
>>>
>>>   someAlgorithm->Update(1); //to make sure there is something valid
>>>   vtkDataObject* dobj = someAlgorithm->GetOutput(1); //keep the output
>>> for later use
>>>
>>> Because since vtk6, dobj no longer has any connection to the algorithm,
>>> so updating it (which used to update the algorithm for you) no longer has
>>> any meaning.
>>>
>>>
>>>
>>> David E DeMarle
>>> Kitware, Inc.
>>> R&D Engineer
>>> 21 Corporate Drive
>>> Clifton Park, NY 12065-8662
>>> Phone: 518-881-4909
>>>
>>> On Thu, Dec 3, 2015 at 9:09 AM, Cory Quammen <cory.quammen at kitware.com>
>>> wrote:
>>>
>>>> Arno,
>>>>
>>>> That pattern should be valid in VTK6. Are you getting compile errors?
>>>>
>>>> I believe the Update() and Write() calls to the writer are redundant -
>>>> you should need only one.
>>>>
>>>> Thanks,
>>>> Cory
>>>>
>>>> On Wed, Dec 2, 2015 at 5:56 PM, Arno Klein <binarybottle at gmail.com>
>>>> wrote:
>>>>
>>>>> I am trying to update my code to migrate to VTK6 according to:
>>>>>
>>>>> http://www.vtk.org/Wiki/VTK/VTK_6_Migration/Removal_of_Update
>>>>>
>>>>> According to the examples on that site, I understand that:
>>>>>
>>>>>     vtkDataObject* dobj = someAlgorithm->GetOutput(1);
>>>>>     dobj->Update();
>>>>>
>>>>> should become:
>>>>>
>>>>>     someAlgorithm->Update(1);
>>>>>
>>>>>
>>>>> However, I don’t know how to deal with the following pattern:
>>>>>
>>>>> void PointAreaComputer::WriteIntoFile(char *fileName)
>>>>> {
>>>>>     vtkPolyDataWriter* writer=vtkPolyDataWriter::New();
>>>>>     writer->SetFileName(fileName);
>>>>>     m_mesh->GetPointData()->SetScalars(m_pointsArea);
>>>>>     writer->SetInputData(m_mesh);
>>>>>     writer->Update();
>>>>>     writer->Write();
>>>>>     writer->Delete();
>>>>> }
>>>>>
>>>>> What should I do to make this compatible with VTK6?
>>>>>
>>>>> Cheers,
>>>>> @rno
>>>>>
>>>>
>
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