/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 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
    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/>.

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

#include "wedgeFvPatch.H"
#include "wedgeFvPatchField.H"
#include "transformField.H"
#include "symmTransform.H"
#include "diagTensor.H"


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class Type>
Foam::wedgeFvPatchField<Type>::wedgeFvPatchField
(
    const fvPatch& p,
    const DimensionedField<Type, volMesh>& iF
)
:
    transformFvPatchField<Type>(p, iF)
{}


template<class Type>
Foam::wedgeFvPatchField<Type>::wedgeFvPatchField
(
    const wedgeFvPatchField<Type>& ptf,
    const fvPatch& p,
    const DimensionedField<Type, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    transformFvPatchField<Type>(ptf, p, iF, mapper)
{
    if (!isType<wedgeFvPatch>(this->patch()))
    {
        FatalErrorInFunction
            << "' not constraint type '" << typeName << "'"
            << "\n    for patch " << p.name()
            << " of field " << this->internalField().name()
            << " in file " << this->internalField().objectPath()
            << exit(FatalError);
    }
}


template<class Type>
Foam::wedgeFvPatchField<Type>::wedgeFvPatchField
(
    const fvPatch& p,
    const DimensionedField<Type, volMesh>& iF,
    const dictionary& dict
)
:
    transformFvPatchField<Type>(p, iF, dict)
{
    if (!isType<wedgeFvPatch>(p))
    {
        FatalIOErrorInFunction(dict)
            << "\n    patch type '" << p.type()
            << "' not constraint type '" << typeName << "'"
            << "\n    for patch " << p.name()
            << " of field " << this->internalField().name()
            << " in file " << this->internalField().objectPath()
            << exit(FatalIOError);
    }

    evaluate();
}


template<class Type>
Foam::wedgeFvPatchField<Type>::wedgeFvPatchField
(
    const wedgeFvPatchField<Type>& ptf
)
:
    transformFvPatchField<Type>(ptf)
{}


template<class Type>
Foam::wedgeFvPatchField<Type>::wedgeFvPatchField
(
    const wedgeFvPatchField<Type>& ptf,
    const DimensionedField<Type, volMesh>& iF
)
:
    transformFvPatchField<Type>(ptf, iF)
{}


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

template<class Type>
Foam::tmp<Foam::Field<Type>> Foam::wedgeFvPatchField<Type>::snGrad() const
{
    const Field<Type> pif(this->patchInternalField());

    return
    (
        transform(refCast<const wedgeFvPatch>(this->patch()).cellT(), pif) - pif
    )*(0.5*this->patch().deltaCoeffs());
}


template<class Type>
void Foam::wedgeFvPatchField<Type>::evaluate(const Pstream::commsTypes)
{
    if (!this->updated())
    {
        this->updateCoeffs();
    }

    fvPatchField<Type>::operator==
    (
        transform
        (
            refCast<const wedgeFvPatch>(this->patch()).faceT(),
            this->patchInternalField()
        )
    );
}


template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::wedgeFvPatchField<Type>::snGradTransformDiag() const
{
    const diagTensor diagT =
        0.5*diag(I - refCast<const wedgeFvPatch>(this->patch()).cellT());

    const vector diagV(diagT.xx(), diagT.yy(), diagT.zz());

    return tmp<Field<Type>>
    (
        new Field<Type>
        (
            this->size(),
            transformMask<Type>
            (
                pow
                (
                    diagV,
                    pTraits<typename powProduct<vector, pTraits<Type>::rank>
                    ::type>::zero
                )
            )
        )
    );
}


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