faceContactSphere.C

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    Copyright (C) 2011 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
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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 UList<point>& meshPoints
) const
{
    vector n1 = n/(Foam::mag(n) + SMALL);
    vector n2 = areaNormal(meshPoints);
 
    n2 /= Foam::mag(n2) + SMALL;
 
    return 2*((centre(meshPoints) - p) & n2)/((n1 & n2) - 1.0);
}
 
 
// ************************************************************************* //