From 3800bd2f0cf55f916adaabffaab588422e5fa08f Mon Sep 17 00:00:00 2001
From: Roland Haas <roland.haas@physics.gatech.edu>
Date: Sat, 2 Jun 2012 09:38:54 -0700
Subject: CarpetEvolutionMask: enlarge evolved region by one in vertex
 centering

to remove the weight = 1/2 points that are used by
reductions.
---
 Carpet/CarpetEvolutionMask/src/evolution_mask.cc | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Carpet/CarpetEvolutionMask')

diff --git a/Carpet/CarpetEvolutionMask/src/evolution_mask.cc b/Carpet/CarpetEvolutionMask/src/evolution_mask.cc
index 2966d2e54..03a0feb3c 100644
--- a/Carpet/CarpetEvolutionMask/src/evolution_mask.cc
+++ b/Carpet/CarpetEvolutionMask/src/evolution_mask.cc
@@ -92,6 +92,9 @@ namespace CarpetEvolutionMask {
         for (int d=0; d<dim;d++) {
 	  antishrinkby[f][d] = ghost_widths[f][d] + buffer_widths[f][d] +
                                enlarge_evolved_region_by;
+          if (hh.refcent == vertex_centered) {
+            antishrinkby[f][d] += 1; // remove the weight = 1/2 points so that reduction operation are unaffected
+          }
         }
       }
       ibset antishrunk
-- 
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