/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2016 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::extrapolatedCalculatedFvPatchField

Group
    grpGenericBoundaryConditions

Description
    This boundary condition applies a zero-gradient condition from the patch
    internal field onto the patch faces when \c evaluated but may also be
    assigned.  \c snGrad returns the patch gradient evaluated from the current
    internal and patch field values rather than returning zero.

Usage
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            extrapolatedCalculated;
    }
    \endverbatim

SourceFiles
    extrapolatedCalculatedFvPatchField.C

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

#ifndef extrapolatedCalculatedFvPatchField_H
#define extrapolatedCalculatedFvPatchField_H

#include "calculatedFvPatchField.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                   Class extrapolatedCalculatedFvPatchField Declaration
\*---------------------------------------------------------------------------*/

template<class Type>
class extrapolatedCalculatedFvPatchField
:
    public calculatedFvPatchField<Type>
{

public:

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


    // Constructors

        //- Construct from patch and internal field
        extrapolatedCalculatedFvPatchField
        (
            const fvPatch&,
            const DimensionedField<Type, volMesh>&
        );

        //- Construct from patch, internal field and dictionary
        extrapolatedCalculatedFvPatchField
        (
            const fvPatch&,
            const DimensionedField<Type, volMesh>&,
            const dictionary&,
            const bool valueRequired=false
        );

        //- Construct by mapping given patchField<Type> onto a new patch
        extrapolatedCalculatedFvPatchField
        (
            const extrapolatedCalculatedFvPatchField<Type>&,
            const fvPatch&,
            const DimensionedField<Type, volMesh>&,
            const fvPatchFieldMapper&
        );

        //- Construct as copy
        extrapolatedCalculatedFvPatchField
        (
            const extrapolatedCalculatedFvPatchField<Type>&
        );

        //- Construct and return a clone
        virtual tmp<fvPatchField<Type>> clone() const
        {
            return tmp<fvPatchField<Type>>
            (
                new extrapolatedCalculatedFvPatchField<Type>(*this)
            );
        }

        //- Construct as copy setting internal field reference
        extrapolatedCalculatedFvPatchField
        (
            const extrapolatedCalculatedFvPatchField<Type>&,
            const DimensionedField<Type, volMesh>&
        );

        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchField<Type>> clone
        (
            const DimensionedField<Type, volMesh>& iF
        ) const
        {
            return tmp<fvPatchField<Type>>
            (
                new extrapolatedCalculatedFvPatchField<Type>(*this, iF)
            );
        }


    // Member functions

        // Evaluation functions

            //- Evaluate the patch field
            virtual void evaluate
            (
                const Pstream::commsTypes commsType=Pstream::blocking
            );
};


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

} // End namespace Foam

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

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

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

#endif

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