| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2016-2021 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::Identity | |
| Description | |
| Templated identity and dual space identity tensors derived from | |
| SphericalTensor. | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| /*---------------------------------------------------------------------------*\ | |
| Class Identity Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| template<class Cmpt> | |
| class Identity | |
| : | |
| public SphericalTensor<Cmpt> | |
| { | |
| public: | |
| //- Construct initialising the SphericalTensor to 1 | |
| Identity() | |
| : | |
| SphericalTensor<Cmpt>(1) | |
| {} | |
| //- The identity type in the dual space | |
| class dual | |
| : | |
| public SphericalTensor<Cmpt> | |
| { | |
| //- Construct initialising the SphericalTensor to 1 | |
| dual() | |
| : | |
| SphericalTensor<Cmpt>(1) | |
| {} | |
| }; | |
| //- Return the identity in the dual space | |
| inline dual operator*() | |
| { | |
| return dual(); | |
| } | |
| //- Return 1 for label | |
| inline explicit operator label() const | |
| { | |
| return 1; | |
| } | |
| //- Return 1 for scalar | |
| inline explicit operator scalar() const | |
| { | |
| return 1; | |
| } | |
| }; | |
| // Global Identity tensor | |
| static const Identity<scalar> I; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |