mapFields: Reinstated mapFields from OpenFOAM-2.2.x and renamed the current mapFields -> mapFieldsPar

This required the addition of the meshToMesh class in the sampling
library from OpenFOAM-2.2.x which is now named meshToMesh0.

src/sampling/meshToMesh/calcMethod/mapNearest/mapNearestMethod.H

@@ -0,0 +1,156 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2015 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::mapNearestMethod
+
+Description
+    Map nearest mesh-to-mesh interpolation class
+
+    Not volume conservative.
+    - cells outside other meshes bounding box do not get mapped
+      (initial filtering)
+    - all remaining cells will be mapped (with weight 1!)
+    - so take care when mapping meshes with different bounding boxes!
+
+SourceFiles
+    mapNearestMethod.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef mapNearestMethod_H
+#define mapNearestMethod_H
+
+#include "meshToMeshMethod.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                      Class mapNearestMethod Declaration
+\*---------------------------------------------------------------------------*/
+
+class mapNearestMethod
+:
+    public meshToMeshMethod
+{
+protected:
+
+    // Protected Member Functions
+
+        //- Find indices of overlapping cells in src and tgt meshes - returns
+        //  true if found a matching pair
+        virtual bool findInitialSeeds
+        (
+            const labelList& srcCellIDs,
+            const boolList& mapFlag,
+            const label startSeedI,
+            label& srcSeedI,
+            label& tgtSeedI
+        ) const;
+
+        //- Calculate the mesh-to-mesh addressing and weights
+        virtual void calculateAddressing
+        (
+            labelListList& srcToTgtCellAddr,
+            scalarListList& srcToTgtCellWght,
+            labelListList& tgtToSrcCellAddr,
+            scalarListList& tgtToSrcCellWght,
+            const label srcSeedI,
+            const label tgtSeedI,
+            const labelList& srcCellIDs,
+            boolList& mapFlag,
+            label& startSeedI
+        );
+
+        //- Find the nearest cell on mesh2 for cell1 on mesh1
+        virtual void findNearestCell
+        (
+            const polyMesh& mesh1,
+            const polyMesh& mesh2,
+            const label cell1,
+            label& cell2
+        ) const;
+
+        //- Set the next cells for the marching front algorithm
+        virtual void setNextNearestCells
+        (
+            label& startSeedI,
+            label& srcCellI,
+            label& tgtCellI,
+            boolList& mapFlag,
+            const labelList& srcCellIDs
+        ) const;
+
+        //- Find a source cell mapped to target cell tgtCellI
+        virtual label findMappedSrcCell
+        (
+            const label tgtCellI,
+            const List<DynamicList<label> >& tgtToSrc
+        ) const;
+
+        //- Disallow default bitwise copy construct
+        mapNearestMethod(const mapNearestMethod&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const mapNearestMethod&);
+
+
+public:
+
+    //- Run-time type information
+    TypeName("mapNearest");
+
+    //- Construct from source and target meshes
+    mapNearestMethod(const polyMesh& src, const polyMesh& tgt);
+
+    //- Destructor
+    virtual ~mapNearestMethod();
+
+
+    // Member Functions
+
+        // Evaluate
+
+            //- Calculate addressing and weights
+            virtual void calculate
+            (
+                labelListList& srcToTgtAddr,
+                scalarListList& srcToTgtWght,
+                labelListList& tgtToTgtAddr,
+                scalarListList& tgtToTgtWght
+            );
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //