SymmTensor2D.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    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::SymmTensor2D
 
Description
    Templated 2D symmetric tensor derived from VectorSpace adding construction
    from 4 components, element access using xx(), xy() etc. member functions
    and the inner-product (dot-product) and outer-product of two Vectors
    (tensor-product) operators.
 
SourceFiles
    SymmTensor2DI.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef SymmTensor2D_H
#define SymmTensor2D_H
 
#include "VectorSpace.H"
#include "SphericalTensor2D.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                         Class SymmTensor2D Declaration
\*---------------------------------------------------------------------------*/
 
template<class Cmpt>
class SymmTensor2D
:
    public VectorSpace<SymmTensor2D<Cmpt>, Cmpt, 3>
{
 
public:
 
    //- Equivalent type of labels used for valid component indexing
    typedef SymmTensor2D<label> labelType;
 
 
    // Member constants
 
        enum
        {
            rank = 2 // Rank of SymmTensor2D is 2
        };
 
 
    // Static data members
 
        static const char* const typeName;
        static const char* componentNames[];
 
        static const SymmTensor2D zero;
        static const SymmTensor2D one;
        static const SymmTensor2D max;
        static const SymmTensor2D min;
        static const SymmTensor2D I;
 
 
    //- Component labeling enumeration
    enum components { XX, XY, YY };
 
 
    // Constructors
 
        //- Construct null
        inline SymmTensor2D();
 
        //- Construct given VectorSpace
        inline SymmTensor2D(const VectorSpace<SymmTensor2D<Cmpt>, Cmpt, 3>&);
 
        //- Construct given SphericalTensor
        inline SymmTensor2D(const SphericalTensor2D<Cmpt>&);
 
        //- Construct given the three components
        inline SymmTensor2D
        (
            const Cmpt txx, const Cmpt txy,
                            const Cmpt tyy
        );
 
        //- Construct from Istream
        SymmTensor2D(Istream&);
 
 
    // Member Functions
 
        // Access
 
            inline const Cmpt& xx() const;
            inline const Cmpt& xy() const;
            inline const Cmpt& yy() const;
 
            inline Cmpt& xx();
            inline Cmpt& xy();
            inline Cmpt& yy();
 
        //- Transpose
        inline const SymmTensor2D<Cmpt>& T() const;
 
 
    // Member Operators
 
        //- Construct given SphericalTensor2D
        inline void operator=(const SphericalTensor2D<Cmpt>&);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
// Include inline implementations
#include "SymmTensor2DI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //