From 692c5aa0075bb5329fa6f830e3311a2a3e7b8bc7 Mon Sep 17 00:00:00 2001
From: sjplimp <sjplimp@f3b2605a-c512-4ea7-a41b-209d697bcdaa>
Date: Wed, 3 Oct 2012 14:41:53 +0000
Subject: [PATCH] git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@8881
 f3b2605a-c512-4ea7-a41b-209d697bcdaa

---
 src/region_plane.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/region_plane.cpp b/src/region_plane.cpp
index 2a79553327..4c588423fc 100644
--- a/src/region_plane.cpp
+++ b/src/region_plane.cpp
@@ -101,9 +101,9 @@ int RegPlane::surface_exterior(double *x, double cutoff)
   dot = -dot;
   if (dot < cutoff && dot >= 0.0) {
     contact[0].r = dot;
-    contact[0].delx = dot*normal[0];
-    contact[0].dely = dot*normal[1];
-    contact[0].delz = dot*normal[2];
+    contact[0].delx = -dot*normal[0];
+    contact[0].dely = -dot*normal[1];
+    contact[0].delz = -dot*normal[2];
     return 1;
   }
   return 0;