/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright held by original author
     \\/     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 2 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, write to the Free Software Foundation,
    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Class
    Foam::pointFieldDecomposer

Description
    Point field decomposer.

SourceFiles
    pointFieldDecomposer.C
    pointFieldDecomposerDecomposeFields.C

\*---------------------------------------------------------------------------*/

#ifndef pointFieldDecomposer_H
#define pointFieldDecomposer_H

#include "pointMesh.H"
#include "PointPatchFieldMapperPatchRef.H"
#include "pointFields.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
               Class pointFieldDecomposer Declaration
\*---------------------------------------------------------------------------*/

class pointFieldDecomposer
{

public:

        //- Point patch field decomposer class
        class patchFieldDecomposer
        :
            public PointPatchFieldMapperPatchRef<pointPatch>
        {
            // Private data

                //- Size before mapping
                label sizeBeforeMapping_;

                //- Reference to direct addressing
                labelList directAddressing_;


        public:

            // Constructors

                //- Construct given addressing
                patchFieldDecomposer
                (
                    const pointPatch& completeMeshPatch,
                    const pointPatch& procMeshPatch,
                    const labelList& directAddr
                );


            // Member functions

                label size() const
                {
                    return directAddressing_.size();
                }

                virtual label sizeBeforeMapping() const
                {
                    return sizeBeforeMapping_;
                }

                bool direct() const
                {
                    return true;
                }

                const unallocLabelList& directAddressing() const
                {
                    return directAddressing_;
                }
        };


private:

    // Private data

        //- Reference to complete mesh
        const pointMesh& completeMesh_;

        //- Reference to processor mesh
        const pointMesh& procMesh_;

        //- Reference to point addressing
        const labelList& pointAddressing_;

        //- Reference to boundary addressing
        const labelList& boundaryAddressing_;

        //- List of patch field decomposers
        List<patchFieldDecomposer*> patchFieldDecomposerPtrs_;


    // Private Member Functions

        //- Disallow default bitwise copy construct
        pointFieldDecomposer(const pointFieldDecomposer&);

        //- Disallow default bitwise assignment
        void operator=(const pointFieldDecomposer&);


public:

    // Constructors

        //- Construct from components
        pointFieldDecomposer
        (
            const pointMesh& completeMesh,
            const pointMesh& procMesh,
            const labelList& pointAddressing,
            const labelList& boundaryAddressing
        );


    // Destructor

        ~pointFieldDecomposer();


    // Member Functions

        //- Decompose point field
        template<class Type>
        tmp<GeometricField<Type, pointPatchField, pointMesh> >
        decomposeField
        (
            const GeometricField<Type, pointPatchField, pointMesh>&
        ) const;

        template<class GeoField>
        void decomposeFields(const PtrList<GeoField>& fields) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#ifdef NoRepository
#   include "pointFieldDecomposerDecomposeFields.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //