[vtkusers] Streamlines

[Sebastian Gatzka]

Hello World.

What is essential to create streamlines with vtkStreamTracer?
I haven't found an example so far.

*I have vector data stored on _structured grid cell centers_.*

Any idea how I can input those to the stream tracer?

Minimal code like this is obviously not correct:

vtkStreamTracer *streamTracer = vtkStreamTracer::New();
streamTracer->SetInput(gridCellCenters->GetOutput());
streamTracer->SetStartPosition(0.5,0.5,0.5);
streamTracer->Update();

Sebastian
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