[visit-developers] [visit-users] reflect with streamlines.

Dave Pugmire pugmire at ornl.gov
Fri Oct 31 11:59:54 EDT 2008

I'm looking at this bug w/ Streamlines and the reflect operator. I 
verified that the old streamline plot produces some output (it's wrong, 
only creates streamlines on original data, not the reflected data. But 
that's a start).

Here is what I'm seeing: I have a simple reflect about X.
Old streamline plot:
Streamline generation called twice. 
One call generates streamline, second does not. The reason is that the 
seed point is not transformed.

New streamline plot:
Streamline generation only called once. Called on the geometry reflected 
about X, not the original.

So, two issues:
1- I need to transform the seed points. How do I determine the matrix in 
the pipeline?
2- Any idea why the plot is only  executed once?  Not sure where to 
begin looking on this one....


Brock Palen wrote:
> I have been messing with the example cgns file, where only half the 
> geometry is in the file.  So I use the reflect operator to complete 
> the whole model.
> When I add a streamline visit always says 'plot velocity resulted in 
> no data'  when I have reflect on that plot also.  If I don't have 
> reflect on I don't get any streamlines on the reflected side of the 
> geometry.
> How do i get streamlines on the real and reflected side of the geometry?
> Brock Palen
> www.umich.edu/~brockp
> Center for Advanced Computing
> brockp at umich.edu
> (734)936-1985
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