[vtkusers] vtkStreamTracer Multiple start positions

[Tijmen Klein]

Hello Everyone,

I am wondering what the easiest method is to specify multiple start
positions for a vtkStreamTracer. For example, if I want to trace 5 lines
from 5 arbitrary start positions, what would be the most convenient way to
do this? This will probably involve the setSource() or SetSourceConnection()
method, but I do not know how to specify arbitrary input points for these
method. The examples don't show this either, one uses a single point as
input, the other a vtkLineSource and vtkPointSource (which is for random
points).

Cheers,
Tijmen
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