faceContactSphere.C

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Description
    Return location of contact sphere on the face

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

#include "face.H"

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

Foam::scalar Foam::face::contactSphereDiameter
(
    const point& p,
    const vector& n,
    const pointField& meshPoints
) const
{
    scalar magN = Foam::mag(n);

    vector n1 = n/(magN + small);
    vector n2 = area(meshPoints);

    n2 /= Foam::mag(n2) + small;

    return 2*((centre(meshPoints) - p) & n2)/((n1 & n2) - 1.0);
}


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