/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2020 DLR
-------------------------------------------------------------------------------
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
    (at your option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Class
    Foam::polyDegree1

Description
    First degree polynominal function

    \verbatim
    c0 + c1*x + c2*y + c3*z
    \endverbatim

    Original code supplied by Henning Scheufler, DLR (2019)

SourceFiles
    polyDegree1.C

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

#ifndef polyDegree1_H
#define polyDegree1_H

#include "vector.H"
#include "vector2D.H"
#include "scalarField.H"
#include "multiDimPolyFunctions.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                        Class polyDegree1 Declaration
\*---------------------------------------------------------------------------*/

class polyDegree1
:
    public multiDimPolyFunctions
{
public:

    //- Runtime type information
    TypeName("polyDegree1");


    // Constructors

        //- Construct from nTerms
        explicit polyDegree1(const labelVector& dirs);


    //- Destructor
    virtual ~polyDegree1() = default;


    // Member Functions

        virtual scalar value(const vector& vec);

        virtual const scalarField& termValues(const vector& vec);
};


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

} // End namespace Foam

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

#endif

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