MapFvSurfaceField.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2015 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.

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Description
    Map Surface internal field on topology change.  This is a partial
    template specialisation, see MapGeometricFields.

\*---------------------------------------------------------------------------*/

#ifndef MapFvSurfaceField_H
#define MapFvSurfaceField_H

#include "Field.H"
#include "surfaceMesh.H"

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

namespace Foam
{

template<class Type, class MeshMapper>
class MapInternalField<Type, MeshMapper, surfaceMesh>
{
public:

    MapInternalField()
    {}

    void operator()
    (
        DimensionedField<Type, surfaceMesh>& field,
        const MeshMapper& mapper
    ) const;
};


template<class Type, class MeshMapper>
void MapInternalField<Type, MeshMapper, surfaceMesh>::operator()
(
    DimensionedField<Type, surfaceMesh>& field,
    const MeshMapper& mapper
) const
{
    if (field.size() != mapper.surfaceMap().sizeBeforeMapping())
    {
        FatalErrorInFunction
           << "Incompatible size before mapping.  Field size: " << field.size()
           << " map size: " << mapper.surfaceMap().sizeBeforeMapping()
           << abort(FatalError);
    }

    // Passing in oriented flag so that oriented fields (e.g. phi) are negated
    // if flipped.  Un-oriented fields, e.g U interpolated to faces (Uf) are not
    // touched
    field.autoMap(mapper.surfaceMap(), field.is_oriented());

    if (field.is_oriented())
    {
        // Flip the flux
        const labelList flipFaces = mapper.surfaceMap().flipFaceFlux().toc();

        forAll(flipFaces, i)
        {
            if (flipFaces[i] < field.size())
            {
                field[flipFaces[i]] *= -1.0;
            }
        }
    }
}


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

} // End namespace Foam

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

#endif

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