patchExprDriverTemplates.C

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    Copyright (C) 2019 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "primitivePatchInterpolation.H"
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::getVariableIfAvailable
(
    const word& name
) const
{
    bool isPointVal = false;
    bool isUniformVal = false;
 
    tmp<Field<Type>> tfield;
 
    if (hasVariable(name) && variable(name).isType<Type>())
    {
        const expressions::exprResult& var = variable(name);
 
        isPointVal = var.isPointValue();
        isUniformVal = var.isUniform();
 
        tfield = var.cref<Type>().clone();
    }
    else if (isGlobalVariable<Type>(name, false))
    {
        const expressions::exprResult& var = lookupGlobal(name);
 
        isUniformVal = var.isUniform();
 
        tfield = var.cref<Type>().clone();
    }
 
    if (tfield.valid())
    {
        const label fldLen = tfield().size();
        const label len = (isPointVal ? this->pointSize() : this->size());
 
        if (returnReduce((fldLen == len), andOp<bool>()))
        {
            return tfield;
        }
 
        if (!isUniformVal)
        {
            WarningInFunction
                << "Variable " << name
                << " does not fit the size and is not a uniform value." << nl
                << "Using average value" << endl;
        }
 
        return tmp<Field<Type>>::New(this->size(), gAverage(tfield));
    }
 
    return tfield;
}
 
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::getVolField(const word& name)
{
    return getField<Type>(name);
}
 
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::getSurfaceField(const word& name)
{
    return getField<Type>(name);
}
 
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::getPointField(const word& name)
{
    return getField<Type>(name);
}
 
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::getField(const word& name)
{
    tmp<Field<Type>> tfield = getVariableIfAvailable<Type>(name);
 
    if (tfield.valid())
    {
        return tfield;
    }
 
 
    typedef GeometricField<Type, fvPatchField, volMesh> vfieldType;
    typedef GeometricField<Type, fvsPatchField, surfaceMesh> sfieldType;
    typedef GeometricField<Type, pointPatchField, pointMesh> pfieldType;
 
    const objectRegistry& obr = this->mesh().thisDb();
 
    const vfieldType* vfield = obr.findObject<vfieldType>(name);
    const sfieldType* sfield = obr.findObject<sfieldType>(name);
    const pfieldType* pfield = obr.findObject<pfieldType>(name);
 
    // Local, temporary storage
    tmp<vfieldType> t_vfield;
    tmp<sfieldType> t_sfield;
    tmp<pfieldType> t_pfield;
 
    if (searchFiles() && !vfield && !sfield && !pfield)
    {
        const word fldType = this->getTypeOfField(name);
 
        if (fldType == vfieldType::typeName)
        {
            t_vfield = this->readAndRegister<vfieldType>(name, mesh());
            vfield = t_vfield.get();
        }
        else if (fldType == sfieldType::typeName)
        {
            t_sfield = this->readAndRegister<sfieldType>(name, mesh());
            sfield = t_sfield.get();
        }
        else if (fldType == pfieldType::typeName)
        {
            t_pfield = this->readAndRegister<pfieldType>
            (
                name,
                pointMesh::New(mesh())
            );
            pfield = t_pfield.get();
        }
     }
 
    const label patchIndex = patch_.index();
 
    if (vfield)
    {
        return tmp<Field<Type>>::New
        (
            vfield->boundaryField()[patchIndex]
        );
    }
 
    if (sfield)
    {
        return tmp<Field<Type>>::New
        (
            sfield->boundaryField()[patchIndex]
        );
    }
 
    if (pfield)
    {
        return pfield->boundaryField()[patchIndex].patchInternalField();
    }
 
 
    FatalErrorInFunction
        << "No field '" << name << "' of type "
        << pTraits<Type>::typeName << nl << nl
        << vfieldType::typeName << " Fields: "
        << flatOutput(obr.sortedNames<vfieldType>()) << nl
        << sfieldType::typeName << " Fields: "
        << flatOutput(obr.sortedNames<sfieldType>()) << nl
        << pfieldType::typeName << " Fields: "
        << flatOutput(obr.sortedNames<pfieldType>()) << nl
        << exit(FatalError);
 
    return tmp<Field<Type>>::New();
}
 
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::faceToPoint
(
    const Field<Type>& field
) const
{
    primitivePatchInterpolation interp(patch_.patch());
 
    return interp.pointToFaceInterpolate(field);
}
 
 
template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::patchExpr::parseDriver::pointToFace
(
    const Field<Type>& field
) const
{
    primitivePatchInterpolation interp(patch_.patch());
 
    return interp.faceToPointInterpolate(field);
}
 
 
// ************************************************************************* //