[vtkusers] End locations of vtkStreamTracer

[Tijmen Klein]

A little update on my own question. I am now able to find the end location
of a streamline, as long as I use 1 input point (setStartPosition() instead
of setSource() ). I can find the end point using this trick:

double* stopPosition;
long numPoints = streamer->GetOutput()->GetNumberOfPoints();
stopPosition = streamer->GetOutput()->GetPoint(numPoints-1);

I can then use this stopPosition for the setStartPosition() method.
Unfortunately, this does not work with multiple inputs. Is there anyone who
could help me on that? Ofcouse, I could create an array of vtkStreamTracers,
each one only tracing a single input point. This should work, but feels
really ugly.

Cheers,
Tijmen

On Wed, Sep 21, 2011 at 4:47 PM, Tijmen Klein <T.R.Klein at student.rug.nl>wrote:

> Hi everyone,
>
> I'm trying to get the end locations of the seeds inserted into
> a vtkStreamTracer. I insert some particles using a vtkDataSet, and I want to
> know the locations of where these particles ended up. How is this possible
> with a vtkStreamTracer?
>
> Some context: I'm working with time dependent data, and I want to use the
> end locations as the new seed locations for the next timestep. I only want
> to visualize the path (using streamtubes) of the current timestep.
>
> Cheers,
> Tijmen
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20110927/1509f04e/attachment.htm>