Hi,
I've been developer a vortex core tracer, which is basically a customized
version of vtkStreamTracer. I use the interpolation code quite heavily in the
class, in this test case I use the point interpolator (i.e.
vtkInterpolatedVelocityField class).
Now in one part of the code, I've noticed that doing two calls to the
interpolator's FunctionValues for a bad boundary point produces strange
results. After the first call to FunctionValues I obtain a valid cell (using
GetCell) and after the second call I get a NULL cell. The second call is
correct because the point in question's y coordinate is -0.0012773338068285955,
which outside of the data set's 0-boundary.
Anyway, I will look into this further to see what's up; I was wondering if
anybody has ideas.
Thank you,
Sohail Shafii
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