data/src/finiteVolume/fields/GeometricFields/GeometricField/uniformInterpolate.C

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

template<class GeoField>
Foam::tmp<GeoField> Foam::uniformInterpolate
(
    const HashPtrTable<GeoField, label, Hash<label>>& fields,
    const labelList& indices,
    const scalarField& weights
)
{
    const GeoField& field0 = *(*fields.begin());

    // Interpolate
    tmp<GeoField> tfld
    (
        GeoField::New
        (
            word("uniformInterpolate(", field0.name(), ')'),
            weights[0]*(*fields[indices[0]])
        )
    );
    GeoField& fld = tfld();

    for (label i = 1; i < indices.size(); ++i)
    {
        fld += weights[i]*(*fields[indices[i]]);
    }

    return tfld;
}


template<class GeoField>
Foam::tmp<GeoField> Foam::uniformInterpolate
(
    const IOobject& fieldIO,
    const word& fieldName,
    const wordList& times,
    const scalarField& weights,
    const objectRegistry& fieldsCache
)
{
    // Look up the first field
    const objectRegistry& time0Fields =
        fieldsCache.lookupObject<const objectRegistry>(times[0]);

    const GeoField& field0 =
        time0Fields.lookupObject<const GeoField>(fieldName);

    // Interpolate
    tmp<GeoField> tfld(GeoField::New(fieldIO.name(), weights[0]*field0));
    GeoField& fld = tfld.ref();

    for (label i = 1; i < times.size(); ++i)
    {
        const objectRegistry& timeIFields =
            fieldsCache.lookupObject<const objectRegistry>(times[i]);

        const GeoField& fieldi =
            timeIFields.lookupObject<const GeoField>(fieldName);

        fld += weights[i]*fieldi;
    }

    return tfld;
}


template<class GeoField>
Foam::tmp<GeoField> Foam::uniformInterpolate
(
    const IOobject& fieldIO,
    const word& fieldName,
    const wordList& times,
    const scalarField& weights,
    const word& registryName
)
{
    return uniformInterpolate<GeoField>
    (
        fieldIO,
        fieldName,
        times,
        weights,
        fieldIO.db().subRegistry(registryName, true)
    );
}


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