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License
    This file is part of OpenFOAM.

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    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.

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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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    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::tetherPotentials::restrainedHarmonicSpring

Description


SourceFiles
    restrainedHarmonicSpring.C

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

#ifndef restrainedHarmonicSpring_H
#define restrainedHarmonicSpring_H

#include "tetherPotential.H"

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

namespace Foam
{
namespace tetherPotentials
{

/*---------------------------------------------------------------------------*\
                  Class restrainedHarmonicSpring Declaration
\*---------------------------------------------------------------------------*/

class restrainedHarmonicSpring
:
    public tetherPotential
{
    // Private Data

        dictionary restrainedHarmonicSpringCoeffs_;

        scalar springConstant_;

        scalar rR_;


public:

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


    // Constructors

        //- Construct from components
        restrainedHarmonicSpring
        (
            const word& name,
            const dictionary& tetherPotentialProperties
        );


    //- Destructor
    ~restrainedHarmonicSpring()
    {}


    // Member Functions

        scalar energy(const vector r) const;

        vector force(const vector r) const;

        //- Read dictionary
        bool read(const dictionary& tetherPotentialProperties);
};


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

} // End namespace tetherPotentials
} // End namespace Foam

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

#endif

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