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[OpenFOAM-2.0.x.git] / src / lagrangian / molecularDynamics / potential / energyScalingFunction / derived / sigmoid / sigmoid.H
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1 /*---------------------------------------------------------------------------*\
2   =========                 |
3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
4    \\    /   O peration     |
5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
6      \\/     M anipulation  |
7 -------------------------------------------------------------------------------
8 License
9     This file is part of OpenFOAM.
11     OpenFOAM is free software: you can redistribute it and/or modify it
12     under the terms of the GNU General Public License as published by
13     the Free Software Foundation, either version 3 of the License, or
14     (at your option) any later version.
16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
19     for more details.
21     You should have received a copy of the GNU General Public License
22     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
24 Class
25     Foam::energyScalingFunctions::sigmoid
27 Description
30 SourceFiles
31     sigmoid.C
33 \*---------------------------------------------------------------------------*/
35 #ifndef sigmoid_H
36 #define sigmoid_H
38 #include "energyScalingFunction.H"
40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
42 namespace Foam
44 namespace energyScalingFunctions
47 /*---------------------------------------------------------------------------*\
48                            Class sigmoid Declaration
49 \*---------------------------------------------------------------------------*/
51 class sigmoid
53     public energyScalingFunction
55     // Private data
57         dictionary sigmoidCoeffs_;
59         scalar shift_;
60         scalar scale_;
63     // Private Member Functions
65         scalar sigmoidScale
66         (
67             const scalar r,
68             const scalar shift,
69             const scalar scale
70         ) const;
73 public:
75     //- Runtime type information
76     TypeName("sigmoid");
79     // Constructors
81         //- Construct from components
82         sigmoid
83         (
84             const word& name,
85             const dictionary& energyScalingFunctionProperties,
86             const pairPotential& pairPot
87         );
90     //- Destructor
91     ~sigmoid()
92     {}
95     // Member Functions
97         void scaleEnergy(scalar& e, const scalar r) const;
99         //- Read dictionary
100         bool read(const dictionary& energyScalingFunctionProperties);
104 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
106 } // End namespace energyScalingFunctions
107 } // End namespace Foam
109 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
111 #endif
113 // ************************************************************************* //