[Developers] AHFinderDirect + Cartoon with bitant symmetry?

Erik Schnetter schnetter at cct.lsu.edu
Sat Jan 13 10:24:07 CST 2007

On Jan 12, 2007, at 13:44:54, Zach Etienne wrote:

> Hello.
> We (the Illinois group) require an apparent horizon finder in  
> Cactus that works     with Cartoon2D + bitant (i.e., "equatorial")  
> symmetry.  Does AHFinderDirect support this combination of symmetries?
> In my version of AHFinderDirect, it says (in AHFinderDirect/doc/TODO):
>     detect Cartoon and rotate geometry interpolation into Cartoon  
> plane
> Thus I'm inclined to believe the answer to my question is "no".  If  
> this is in fact the case, does anyone have a version of  
> AHFinderDirect that supports Cartoon+bitant symmetry?

While AHFinderDirect does not know about the Cartoon symmetry, the  
Cartoon thorn knows how to interpolate to grid points everywhere in  
space, not just on the Cartoon plane.  Thus AHFinderDirect never  
needs to know that you have a Cartoon symmetry, although this would  
of course increase performance.


Erik Schnetter <schnetter at cct.lsu.edu>

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