MapFvSurfaceField.H

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License
    This file is part of OpenFOAM.

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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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    for more details.

    You should have received a copy of the GNU General Public License
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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()
    (
        Field<Type>& field,
        const MeshMapper& mapper
    ) const;
};


template<class Type, class MeshMapper>
void MapInternalField<Type, MeshMapper, surfaceMesh>::operator()
(
    Field<Type>& 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);
    }

    field.autoMap(mapper.surfaceMap());

    // 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

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