00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 Class 00025 Foam::biLinearFitPolynomial 00026 00027 Description 00028 BiLinear polynomial for interpolation fitting. 00029 00030 Can be used with the CentredFit scheme to create a biLinear surface 00031 interpolation scheme 00032 00033 \*---------------------------------------------------------------------------*/ 00034 00035 #ifndef biLinearFitPolynomial_H 00036 #define biLinearFitPolynomial_H 00037 00038 #include <OpenFOAM/vector.H> 00039 00040 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00041 00042 namespace Foam 00043 { 00044 00045 /*---------------------------------------------------------------------------*\ 00046 Class biLinearFitPolynomial Declaration 00047 \*---------------------------------------------------------------------------*/ 00048 00049 class biLinearFitPolynomial 00050 { 00051 public: 00052 00053 // Member functions 00054 00055 static label nTerms(const direction dim) 00056 { 00057 return 00058 ( 00059 dim == 1 ? 2 : 00060 dim == 2 ? 4 : 00061 dim == 3 ? 6 : 0 00062 ); 00063 } 00064 00065 static void addCoeffs 00066 ( 00067 scalar* coeffs, 00068 const vector& d, 00069 const scalar weight, 00070 const direction dim 00071 ) 00072 { 00073 register label curIdx = 0; 00074 00075 coeffs[curIdx++] = weight; 00076 coeffs[curIdx++] = weight*d.x(); 00077 00078 if (dim >= 2) 00079 { 00080 coeffs[curIdx++] = weight*d.y(); 00081 coeffs[curIdx++] = weight*d.x()*d.y(); 00082 } 00083 if (dim == 3) 00084 { 00085 coeffs[curIdx++] = weight*d.z(); 00086 coeffs[curIdx++] = weight*d.x()*d.z(); 00087 } 00088 } 00089 }; 00090 00091 00092 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00093 00094 } // End namespace Foam 00095 00096 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00097 00098 #endif 00099 00100 // ************************ vim: set sw=4 sts=4 et: ************************ //
