[vtkusers] place arrows equally spaced along streamlines

[Cory Quammen]

Dan,

Another way would be to normalize your vector field, run the stream
tracer on it, and then contour by integration time. That should give
you evenly spaced samples along the streamline when you run the
contour filter on it.

A quick test of this in ParaView looks like it should work. See
attached images. The one with the normalized velocity field has even
spacing, the one with the non-normalized velocity field does not.

Cory

On Wed, Mar 15, 2017 at 11:44 AM, Dan Lipsa <dan.lipsa at kitware.com> wrote:
> Hi all,
> I would like to place arrow glyphs equally spaced along streamlines. I am
> using vtkStreamTracer.
> The only way I see to do this is to add an option to vtkStreamTracer to
> compute the distance from the seed and add this as a point data to the the
> streamline. Than, I can use contour to get the points where I need to place
> the arrows.
>
> Is there any other simpler way? Do you have any suggestions with this?
>
> Thanks,
> Dan
>
>
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-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.
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