[vtkusers] place arrows equally spaced along streamlines

[Dan Lipsa]

Thanks Cory!
This works very nice!

Dan


On Wed, Mar 15, 2017 at 12:08 PM, Cory Quammen <cory.quammen at kitware.com>
wrote:

> 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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