From 073eab46f17ffce1c28c15b16c95180116b242b9 Mon Sep 17 00:00:00 2001
From: Luca Heltai <luca.heltai@sissa.it>
Date: Sat, 26 Mar 2016 10:47:59 +0100
Subject: [PATCH] Fixed issue with periodicity.

---
 source/grid/manifold.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/grid/manifold.cc b/source/grid/manifold.cc
index 4fc83bf99d..361057fbf9 100644
--- a/source/grid/manifold.cc
+++ b/source/grid/manifold.cc
@@ -423,7 +423,8 @@ get_new_point (const Quadrature<spacedim> &quad) const
     if (periodicity[d] > 0)
       for (unsigned int i=0; i<surrounding_points.size(); ++i)
         {
-          minP[d] = std::min(minP[d], surrounding_points[i][d]);
+          if (weights[i] > tolerance)
+            minP[d] = std::min(minP[d], surrounding_points[i][d]);
           Assert( (surrounding_points[i][d] < periodicity[d]+tolerance*periodicity.norm()) ||
                   (surrounding_points[i][d] >= -tolerance*periodicity.norm()),
                   ExcPeriodicBox(d, surrounding_points[i], periodicity, tolerance*periodicity.norm()));
-- 
2.39.5