pointToPointPlanarInterpolationTemplates.C

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    Copyright (C) 2022 OpenCFD Ltd.
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#include "pointToPointPlanarInterpolation.H"

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

template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::pointToPointPlanarInterpolation::interpolate
(
    const Field<Type>& sourceFld
) const
{
    if (nPoints_ != sourceFld.size())
    {
        FatalErrorInFunction
            << "Number of source points = " << nPoints_
            << " number of values = " << sourceFld.size()
            << exit(FatalError);
    }

    auto tfld = tmp<Field<Type>>::New(nearestVertex_.size());
    auto& fld = tfld.ref();

    forAll(fld, i)
    {
        const FixedList<label, 3>& verts = nearestVertex_[i];
        const FixedList<scalar, 3>& w = nearestVertexWeight_[i];

        if (verts[1] == -1)
        {
            // Use vertex (0) only
            fld[i] = sourceFld[verts[0]];
        }
        else if (verts[2] == -1)
        {
            // Use vertex (0,1)
            fld[i] =
            (
                w[0]*sourceFld[verts[0]]
              + w[1]*sourceFld[verts[1]]
            );
        }
        else
        {
            // Use vertex (0,1,2)
            fld[i] =
            (
                w[0]*sourceFld[verts[0]]
              + w[1]*sourceFld[verts[1]]
              + w[2]*sourceFld[verts[2]]
            );
        }
    }
    return tfld;
}


template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::pointToPointPlanarInterpolation::interpolate
(
    const tmp<Field<Type>>& tsource
) const
{
    tmp<Field<Type>> tresult = this->interpolate(tsource());
    tsource.clear();

    return tresult;
}


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