[vtkusers] stream tracer / stream lines

[Sebastian Gatzka]

Ok this was solved.
I had to use a vtkCellDataToPointData befor inputting it into the 
vtkStreamLine.

Am 26.03.2010 11:30, schrieb Sebastian Gatzka:
> Nope, it's not working with my data.
>
> I really need this to work: *Vector Data is on structured grid cell 
> centers!!!*
>
> vtkStructuredGrid *sGrid = vtkStructuredGrid::New();
>
> (...)
>
> vtkCellCenters *gridCellCenters = vtkCellCenters::New();
> gridCellCenters->SetInput(sGrid);
>
> Vector Data is on the structured grid cell centers:
>
> sGrid->GetCellData()->SetVectors(v);
>
> (...)
>
> vtkStreamLine *streamer = vtkStreamLine::New();
> _/streamer->SetInputConnection(gridCellCenters->GetOutputPort());/_
> streamer->SetStartPosition(1,1,1);
> streamer->SetMaximumPropagationTime(200);
> streamer->SetIntegrationStepLength(.2);
> streamer->SetStepLength(.001);
> streamer->SetNumberOfThreads(1);
> streamer->SetIntegrationDirectionToForward();
> streamer->VorticityOn();
>
> vtkPolyDataMapper *streamMapper = vtkPolyDataMapper::New();
> streamMapper->SetInputConnection(streamer->GetOutputPort());
>
> vtkActor *streamActor = vtkActor::New();
> streamActor->SetMapper(streamMapper);
> streamActor->VisibilityOn();
>
> (...)
>
> ren1->AddActor(streamActor);
>
> Nothing is displayed.
>
> *How can I manage to input my data to the vtkStreamLine?!?*
>
> Am 25.03.2010 13:51, schrieb Favre Jean:
>> I believe this example will now work if you set your VTK_DATA_ROOT appropriately.
>>
>> -----------------
>> Jean M. Favre
>> Scientific Computing Research
>> Swiss National Supercomputing Center
>> CH-6828 Manno
>> Switzerland
>>    
>>
>>
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>
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