zeroGradientTemplates.C

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License
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#include "polyPatch.H"
#include "Time.H"
#include "zeroGradientFvPatchField.H"

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

template<class Type>
bool Foam::functionObjects::zeroGradient::accept
(
    const GeometricField<Type, fvPatchField, volMesh>& input
)
{
    const auto& patches = input.boundaryField();

    forAll(patches, patchi)
    {
        if (!polyPatch::constraintType(patches[patchi].patch().patch().type()))
        {
            return true;
        }
    }

    return false;
}


template<class Type>
int Foam::functionObjects::zeroGradient::apply
(
    const word& inputName,
    int& state
)
{
    typedef GeometricField<Type, fvPatchField, volMesh> VolFieldType;

    // State: return 0 (not-processed), -1 (skip), +1 ok

    // Already done, or not available
    if (state || !foundObject<VolFieldType>(inputName))
    {
        return state;
    }

    const VolFieldType& input = lookupObject<VolFieldType>(inputName);

    if (!returnReduceOr(accept(input)))
    {
        state = -1;
        return state;
    }

    word outputName(resultName_);
    outputName.replace("@@", inputName);

    // Also save the field-type, just in case we want it later
    results_.set(outputName, VolFieldType::typeName);

    if (!foundObject<VolFieldType>(outputName))
    {
        auto tzeroGrad = tmp<VolFieldType>::New
        (
            IOobject
            (
                outputName,
                time_.timeName(),
                mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE,
                IOobject::REGISTER
            ),
            mesh_,
            dimensioned<Type>(input.dimensions(), Zero),
            fvPatchFieldBase::zeroGradientType()
        );

        store(outputName, tzeroGrad);
    }

    VolFieldType& output = lookupObjectRef<VolFieldType>(outputName);

    output = input;
    output.correctBoundaryConditions();

    state = +1;
    return state;
}


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