geometricZeroField.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2017 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    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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Class
    Foam::geometricZeroField
 
Description
    A class representing the concept of a GeometricField of 0 used to avoid
    unnecessary manipulations for objects which are known to be zero at
    compile-time.
 
    Used for example as the density argument to a function written for
    compressible to be used for incompressible flow.
 
\*---------------------------------------------------------------------------*/
 
#ifndef geometricZeroField_H
#define geometricZeroField_H
 
#include "zeroFieldField.H"
#include "dimensionSet.H"
#include "scalar.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                      Class geometricZeroField Declaration
\*---------------------------------------------------------------------------*/
 
class geometricZeroField
:
    public zero
{
 
public:
 
    // Public typedefs
 
        typedef zeroField Internal;
        typedef zeroField Patch;
        typedef zeroFieldField Boundary;
        typedef zero cmptType;
 
 
    // Constructors
 
        //- Construct null
        geometricZeroField()
        {}
 
 
    // Member Operators
 
        inline const dimensionSet& dimensions() const;
 
        inline scalar operator[](const label) const;
 
        inline zeroField field() const;
 
        inline zeroField operator()() const;
 
        inline zeroField oldTime() const;
 
        inline zeroFieldField boundaryField() const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "geometricZeroFieldI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //