[ET Trac] [Einstein Toolkit] #1067: Do not interpolate from buffer zones

[Einstein Toolkit]

#1067: Do not interpolate from buffer zones
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 Reporter:  eschnett  |       Owner:  eschnett
     Type:  defect    |      Status:  new     
 Priority:  major     |   Milestone:          
Component:  Carpet    |     Version:          
 Keywords:            |  
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 When interpolating, Carpet currently results results using information
 from buffer points. This should not be the case.

 To remedy this, in gh.cc::locate_position, after searching the
 superregions, check with dh.hh:level_dboxes::active whether the point is
 within a buffer region, and if so, use the next coarser grid instead.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1067>
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