168 lines
4.4 KiB
C++
168 lines
4.4 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::Tensor2D
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Description
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Templated 2D tensor derived from VectorSpace adding construction from
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4 components, element access using xx(), xy(), yx() and yy() member
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functions and the iner-product (dot-product) and outer-product of two
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Vector2Ds (tensor-product) operators.
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SourceFiles
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Tensor2DI.H
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\*---------------------------------------------------------------------------*/
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#ifndef Tensor2D_H
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#define Tensor2D_H
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#include "Vector2D.H"
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#include "SphericalTensor2D.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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template<class Cmpt>
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class SymmTensor2D;
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/*---------------------------------------------------------------------------*\
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Class Tensor2D Declaration
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\*---------------------------------------------------------------------------*/
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template<class Cmpt>
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class Tensor2D
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:
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public VectorSpace<Tensor2D<Cmpt>, Cmpt, 4>
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{
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public:
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//- Equivalent type of labels used for valid component indexing
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typedef Tensor2D<label> labelType;
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// Member constants
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//- Rank of Tensor2D is 2
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static const direction rank = 2;
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// Static data members
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static const Tensor2D I;
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//- Component labeling enumeration
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enum components { XX, XY, YX, YY };
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// Constructors
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//- Construct null
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inline Tensor2D();
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//- Construct initialized to zero
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inline Tensor2D(const Foam::zero);
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//- Construct given VectorSpace
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inline Tensor2D(const VectorSpace<Tensor2D<Cmpt>, Cmpt, 4>&);
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//- Construct given SymmTensor2D
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inline Tensor2D(const SymmTensor2D<Cmpt>&);
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//- Construct given SphericalTensor2D
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inline Tensor2D(const SphericalTensor2D<Cmpt>&);
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//- Construct given the two vectors
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inline Tensor2D
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(
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const Vector2D<Cmpt>& x,
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const Vector2D<Cmpt>& y
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);
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//- Construct given the four components
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inline Tensor2D
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(
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const Cmpt txx, const Cmpt txy,
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const Cmpt tyx, const Cmpt tyy
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);
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//- Construct from Istream
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Tensor2D(Istream&);
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// Member Functions
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// Access
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inline const Cmpt& xx() const;
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inline const Cmpt& xy() const;
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inline const Cmpt& yx() const;
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inline const Cmpt& yy() const;
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inline Cmpt& xx();
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inline Cmpt& xy();
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inline Cmpt& yx();
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inline Cmpt& yy();
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// Access vector components.
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inline Vector2D<Cmpt> x() const;
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inline Vector2D<Cmpt> y() const;
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//- Transpose
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inline Tensor2D<Cmpt> T() const;
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// Member Operators
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//- Copy SymmTensor2D
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inline void operator=(const SymmTensor2D<Cmpt>&);
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//- Copy SphericalTensor2D
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inline void operator=(const SphericalTensor2D<Cmpt>&);
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//- Assignment to zero
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inline void operator=(const Foam::zero);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Include inline implementations
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#include "Tensor2DI.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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