1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 2004-2010 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
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
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/>.
25 Return location of contact sphere on the face
27 \*---------------------------------------------------------------------------*/
31 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
33 Foam::scalar Foam::face::contactSphereDiameter
37 const pointField& meshPoints
40 scalar magN = Foam::mag(n);
42 vector n1 = n/(magN + SMALL);
43 vector n2 = normal(meshPoints);
45 n2 /= Foam::mag(n2) + SMALL;
47 return 2*((centre(meshPoints) - p) & n2)/((n1 & n2) - 1.0);
51 // ************************************************************************* //