1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | foam-extend: Open Source CFD
4 \\ / O peration | Version: 3.2
5 \\ / A nd | Web: http://www.foam-extend.org
6 \\/ M anipulation | For copyright notice see file Copyright
7 -------------------------------------------------------------------------------
9 This file is part of foam-extend.
11 foam-extend 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 3 of the License, or (at your
14 option) any later version.
16 foam-extend is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
24 \*---------------------------------------------------------------------------*/
27 #include "addToRunTimeSelectionTable.H"
29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
33 defineTypeNameAndDebug(W2, 0);
34 addToRunTimeSelectionTable(RBFFunction, W2, dictionary);
38 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
40 Foam::W2::W2(const scalar radius)
47 Foam::W2::W2(const dictionary& dict)
50 radius_(readScalar(dict.lookup("radius")))
54 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
60 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
62 Foam::tmp<Foam::scalarField> Foam::W2::weights
64 const vectorField& controlPoints,
65 const vector& dataPoint
68 scalarField dist = mag(controlPoints - dataPoint);
70 scalarField RBF(dist.size());
72 RBF = neg(dist - radius_)*
73 Foam::max(pow4(1 - (dist/radius_)), scalar(0))*(1 + 4*(dist/radius_));
78 // ************************************************************************* //