sphereI.H

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// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //

inline Foam::symmTensor Foam::RBD::sphere::I
(
    const scalar m,
    const scalar r
) const
{
    return ((2.0/5.0)*m*sqr(r))*Foam::I;
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

inline Foam::RBD::sphere::sphere
(
    const word& name,
    const scalar m,
    const vector& c,
    const scalar r
)
:
    rigidBody(name, m, c, I(m, r)),
    r_(r)
{}


inline Foam::RBD::sphere::sphere
(
    const word& name,
    const dictionary& dict
)
:
    rigidBody(name, rigidBodyInertia()),
    r_(dict.lookup<scalar>("radius"))
{
    const scalar m(dict.lookup<scalar>("mass"));
    const vector c(dict.lookup("centreOfMass"));
    rigidBodyInertia::operator=(rigidBodyInertia(m, c, I(m, r_)));
}


// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //

inline Foam::scalar Foam::RBD::sphere::r() const
{
    return r_;
}


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