ENH: polyPatch: make clearing of geometry virtual

src/OpenFOAM/meshes/polyMesh/polyPatches/polyPatch/polyPatch.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -65,6 +65,12 @@ void Foam::polyPatch::updateMesh(PstreamBuffers&)
 }
 
 
+void Foam::polyPatch::clearGeom()
+{
+    primitivePatch::clearGeom();
+}
+
+
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 Foam::polyPatch::polyPatch

src/OpenFOAM/meshes/polyMesh/polyPatches/polyPatch/polyPatch.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -116,6 +116,9 @@ protected:
         //- Update of the patch topology
         virtual void updateMesh(PstreamBuffers&);
 
+        //- Clear geometry
+        virtual void clearGeom();
+
 
 public:
 
@@ -338,7 +341,7 @@ public:
             const labelList& meshEdges() const;
 
             //- Clear addressing
-            void clearAddressing();
+            virtual void clearAddressing();
 
 
         // Other patch operations