interpolationCellPointI.H

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

template<class Type>
inline Type Foam::interpolationCellPoint<Type>::interpolate
(
    const cellPointWeight& cpw
) const
{
    const List<scalar>& weights = cpw.weights();
    const List<label>& faceVertices = cpw.faceVertices();

    Type t = this->psi_[cpw.cell()]*weights[0];
    t += psip_[faceVertices[0]]*weights[1];
    t += psip_[faceVertices[1]]*weights[2];
    t += psip_[faceVertices[2]]*weights[3];

    return t;
}


template<class Type>
inline Type Foam::interpolationCellPoint<Type>::interpolate
(
    const vector& position,
    const label celli,
    const label facei
) const
{
    return interpolate(cellPointWeight(this->pMesh_, position, celli, facei));
}


template<class Type>
inline Type Foam::interpolationCellPoint<Type>::interpolate
(
    const vector& position,
    const tetIndices& tetIs,
    const label facei
) const
{
    // Assumes that the position is consistent with the supplied
    // tetIndices.  Does not pay attention to whether or not facei is
    // supplied or not - the result will be essentially the same.
    // Performs a consistency check, however.

    if (facei >= 0)
    {
        if (facei != tetIs.face())
        {
            FatalErrorInFunction
                << "specified face " << facei << " inconsistent with the face "
                << "stored by tetIndices: " << tetIs.face()
                << exit(FatalError);
        }
    }

    List<scalar> weights;

    tetIs.tet(this->pMesh_).barycentric(position, weights);

    const faceList& pFaces = this->pMesh_.faces();

    const face& f = pFaces[tetIs.face()];

    // Order of weights is the same as that of the vertices of the tet, i.e.
    // cellCentre, faceBasePt, facePtA, facePtB.

    Type t = this->psi_[tetIs.cell()]*weights[0];

    t += psip_[f[tetIs.faceBasePt()]]*weights[1];

    t += psip_[f[tetIs.facePtA()]]*weights[2];

    t += psip_[f[tetIs.facePtB()]]*weights[3];

    return t;
}


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