pairGAMGAgglomeration.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2013 OpenFOAM Foundation
-------------------------------------------------------------------------------
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
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    You should have received a copy of the GNU General Public License
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Class
    Foam::pairGAMGAgglomeration

Description
    Agglomerate using the pair algorithm.

SourceFiles
    pairGAMGAgglomeration.C
    pairGAMGAgglomerate.C

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

#ifndef pairGAMGAgglomeration_H
#define pairGAMGAgglomeration_H

#include "GAMGAgglomeration.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                           Class pairGAMGAgglomeration Declaration
\*---------------------------------------------------------------------------*/

class pairGAMGAgglomeration
:
    public GAMGAgglomeration
{
    // Private data

        //- Number of levels to merge, 1 = don't merge, 2 = merge pairs etc.
        label mergeLevels_;

        //- Direction of cell loop for the current level
        static bool forward_;


protected:

    // Protected Member Functions

        //- Agglomerate all levels starting from the given face weights
        void agglomerate
        (
            const lduMesh& mesh,
            const scalarField& faceWeights
        );

        //- No copy construct
        pairGAMGAgglomeration(const pairGAMGAgglomeration&) = delete;

        //- No copy assignment
        void operator=(const pairGAMGAgglomeration&) = delete;


public:

    //- Runtime type information
    TypeName("pair");


    // Constructors

        //- Construct given mesh and controls
        pairGAMGAgglomeration
        (
            const lduMesh& mesh,
            const dictionary& controlDict
        );

        //- Calculate and return agglomeration
        static tmp<labelField> agglomerate
        (
            label& nCoarseCells,
            const lduAddressing& fineMatrixAddressing,
            const scalarField& faceWeights
        );
};


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

} // End namespace Foam

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

#endif

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