From d5829988d80578d4ba2ef48aa6a26e29f419f97c Mon Sep 17 00:00:00 2001
From: graham <g.macpherson@opencfd.co.uk>
Date: Thu, 28 Jan 2010 13:56:13 +0000
Subject: [PATCH] plane class: adding normalisation of normal vector for vector
 only constructor.

---
 .../meshes/primitiveShapes/plane/plane.C      | 25 ++++++++++++++-----
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/src/OpenFOAM/meshes/primitiveShapes/plane/plane.C b/src/OpenFOAM/meshes/primitiveShapes/plane/plane.C
index 2e90e4d62c..6f711cc603 100644
--- a/src/OpenFOAM/meshes/primitiveShapes/plane/plane.C
+++ b/src/OpenFOAM/meshes/primitiveShapes/plane/plane.C
@@ -128,7 +128,20 @@ Foam::plane::plane(const vector& normalVector)
 :
     unitVector_(normalVector),
     basePoint_(vector::zero)
-{}
+{
+    scalar magUnitVector(mag(unitVector_));
+
+    if (magUnitVector > VSMALL)
+    {
+        unitVector_ /= magUnitVector;
+    }
+    else
+    {
+        FatalErrorIn("plane::plane(const point&, const vector&)")
+            << "plane normal has zero length"
+            << abort(FatalError);
+    }
+}
 
 
 // Construct from point and normal vector
@@ -146,8 +159,8 @@ Foam::plane::plane(const point& basePoint, const vector& normalVector)
     else
     {
         FatalErrorIn("plane::plane(const point&, const vector&)")
-        << "plane normal has got zero length"
-        << abort(FatalError);
+            << "plane normal has zero length"
+            << abort(FatalError);
     }
 }
 
@@ -217,8 +230,8 @@ Foam::plane::plane(const dictionary& dict)
             "plane::plane(const dictionary&)",
             dict
         )
-        << "Invalid plane type: " << planeType
-        << abort(FatalIOError);
+            << "Invalid plane type: " << planeType
+            << abort(FatalIOError);
     }
 }
 
@@ -238,7 +251,7 @@ Foam::plane::plane(Istream& is)
     else
     {
         FatalErrorIn("plane::plane(Istream& is)")
-            << "plane normal has got zero length"
+            << "plane normal has zero length"
             << abort(FatalError);
     }
 }