1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2008 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 the
13 Free Software Foundation; either version 2 of the License, or (at your
14 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, write to the Free Software Foundation,
23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 \*----------------------------------------------------------------------------*/
27 #include "moleculeCloud.H"
29 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
31 bool Foam::moleculeCloud::testEdgeEdgeDistance
37 const vector& eJs(mesh_.points()[eJ.start()]);
38 const vector& eJe(mesh_.points()[eJ.end()]);
40 return testEdgeEdgeDistance(eI, eJs, eJe);
43 bool Foam::moleculeCloud::testEdgeEdgeDistance
50 vector a(eI.vec(mesh_.points()));
53 const vector& eIs(mesh_.points()[eI.start()]);
57 vector crossab = a ^ b;
58 scalar magCrossSqr = magSqr(crossab);
60 if (magCrossSqr > VSMALL)
62 // If the edges are parallel then a point-face
63 // search will pick them up
65 scalar s = ((c ^ b) & crossab)/magCrossSqr;
66 scalar t = ((c ^ a) & crossab)/magCrossSqr;
68 // Check for end points outside of range 0..1
69 // If the closest point is outside this range
70 // a point-face search will have found it.
78 && magSqr(eIs + a*s - eJs - b*t) <= pairPotentials_.rCutMaxSqr()
86 // ************************************************************************* //