[vtkusers] SetInputData migration VTK 6

[Laurent Chauvin]

Hi Sam,

Thank you for your answer.

Here is my pipeline (just an overview):

vtkSplineFilter->SetInputData(polydata)

vtkTubeFilter->SetInputConnection(vtkSplineFilter->GetOutputPort())

vtkMRMLModelNode->SetAndObservePolyData(vtkTubeFilter->GetOutput())

I would like to have one vtkMRMLModelNode with one polydata.
The problem if I do what you suggested, is all my vtkMRMLModelNodes are
gonna observe TubeFilter. So when I will modify my polydata and call
vtkSplineFilter->Update() and vtkTubeFilter->Update(), all my
vtkMRMLModelNodes will be updated, but I only want the last one to be.
Should I do a copy of the output of vtkTubeFilter instead ? to avoid they
all change when I update the TubeFilter ?

Thank you.
-Laurent



On Tue, Jul 22, 2014 at 7:02 PM, Sam Raby <rabysam28 at gmail.com> wrote:

> Hi Laurent,
>
> After feeding the vtkPolyData into the vtkSplineFilter by SetInputData and
> setting the parameters of the filter, did you try to manually update the
> vtkSplineFilter?
>
>
>
>
> On Tue, Jul 22, 2014 at 4:55 PM, Laurent Chauvin <lchauvin at bwh.harvard.edu
> > wrote:
>
>> Hello,
>>
>> I created a pipeline with a vtkSplineFilter, with a polydata as input.
>> However, now that I try to make it compatible with VTK 6, it's not
>> working anymore.
>>
>> I replaced SetInput by SetInputData, and I read that SetInputData doesn't
>> create the pipeline. That's probably why now, when I update my polydata,
>> it's not updating the spline.
>> But I was wondering then how should I do to keep creating the pipeline
>> then ?
>>
>> I read to use SetInputConnection, but I think SetInputConnection take as
>> argument the OutputPort of another filter, but the spline is the 'entry
>> point' of my pipeline, taking a polydata as input, and applying some
>> filters on it.
>>
>> How could I do to update the pipeline when modifying the polydata ?
>>
>> Thank you.
>> -Laurent
>>
>> --
>> Laurent Chauvin, MS
>> Surgical Navigation and Robotics Laboratory, Radiology Department
>> Brigham And Women's Hospital, Harvard Medical School
>> http://wiki.ncigt.org/index.php/User:Lchauvin
>>
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-- 
Laurent Chauvin, MS
Surgical Navigation and Robotics Laboratory, Radiology Department
Brigham And Women's Hospital, Harvard Medical School
http://wiki.ncigt.org/index.php/User:Lchauvin
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