/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 1991-2005 OpenCFD Ltd.
     \\/     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

Description
    internal field renumbering algorithm

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

#include "fvMeshBandCompression.H"
#include "volFields.H"

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

namespace Foam
{

// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class Type>
tmp<Field<Type> > fvMeshBandCompression::renumberInternalField
(
    const Field<Type>& vf
) const
{
    // Create and map the internal-field values
    if (vf.size() != nCells())
    {
        FatalErrorIn("renumberInternalField(const Field<Type>& vf) const")
            << "Field does not correspond to the mesh." << endl
            << "Field size: " << vf.size() << " Mesh size: " << nCells()
            << abort(FatalError);
    }

    tmp<Field<Type> > tresF(new Field<Type>(nCells()));
    Field<Type>& resF = tresF();

    const labelList& order = cellOrder();

    forAll (resF, cellI)
    {
        resF[cellI] = vf[order[cellI]];
    }

    return tresF;
}


template<class Type>
tmp<GeometricField<Type, fvPatchField, volMesh> >
fvMeshBandCompression::renumber
(
    const fvMesh& targetMesh,
    const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
    // Create and map the internal-field values
    Field<Type> internalField
    (
        renumberInternalField(vf.internalField())
    );

    // make a boundary field
    PtrList<fvPatchField<Type> > patchFields
    (
        vf.boundaryField().size()
    );

    forAll (vf.boundaryField(), patchI)
    {
        patchFields.hook
        (
            vf.boundaryField()[patchI].clone(internalField)
        );
    }

    // Create the complete field from the pieces
    return tmp<GeometricField<Type, fvPatchField, volMesh> >
    (
        new GeometricField<Type, fvPatchField, volMesh>
        (
            IOobject
            (
                "renumbered"+vf.name(),
                time().constant(),
                vf.db()
            ),
            targetMesh,
            vf.dimensions(),
            internalField,
            patchFields
        )
    );
}


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

} // End namespace Foam

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