ENH: add clear() method to coordinateSystem, coordinateRotation

src/meshTools/coordinateSystems/coordinateRotation/coordinateRotation.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 1991-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -167,6 +167,14 @@ Foam::autoPtr<Foam::coordinateRotation> Foam::coordinateRotation::New
 }
 
 
+// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
+
+void Foam::coordinateRotation::clear()
+{
+    this->tensor::operator=(sphericalTensor::I);
+}
+
+
 // * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
 
 void Foam::coordinateRotation::operator=(const dictionary& rhs)

src/meshTools/coordinateSystems/coordinateRotation/coordinateRotation.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 1991-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -165,6 +165,9 @@ public:
 
     // Member Functions
 
+        //- Reset rotation to an identity rotation
+        virtual void clear();
+
         //- Return local-to-global transformation tensor
         const tensor& R() const
         {

src/meshTools/coordinateSystems/coordinateSystem.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 1991-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -290,6 +290,15 @@ Foam::tmp<Foam::vectorField> Foam::coordinateSystem::globalToLocal
 }
 
 
+void Foam::coordinateSystem::clear()
+{
+    note_.clear();
+    origin_ = point::zero;
+    R_.clear();
+    Rtr_ = sphericalTensor::I;
+}
+
+
 void Foam::coordinateSystem::write(Ostream& os) const
 {
     os  << type()

src/meshTools/coordinateSystems/coordinateSystem.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 1991-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -397,6 +397,10 @@ public:
                 return origin_;
             }
 
+            //- Reset origin and rotation to an identity coordinateSystem
+            //  Also resets the note
+            virtual void clear();
+
 
         // Write