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::quadraticLinearFitPolynomial 00026 00027 Description 00028 Quadratic/linear polynomial for interpolation fitting: 00029 quadratic normal to the face, 00030 linear in the plane of the face for consistency with 2nd-order Gauss. 00031 00032 Can be used with the CentredFit scheme to create a quadratic surface 00033 interpolation scheme 00034 00035 \*---------------------------------------------------------------------------*/ 00036 00037 #ifndef quadraticLinearFitPolynomial_H 00038 #define quadraticLinearFitPolynomial_H 00039 00040 #include <OpenFOAM/vector.H> 00041 00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00043 00044 namespace Foam 00045 { 00046 00047 /*---------------------------------------------------------------------------*\ 00048 Class quadraticLinearFitPolynomial Declaration 00049 \*---------------------------------------------------------------------------*/ 00050 00051 class quadraticLinearFitPolynomial 00052 { 00053 public: 00054 00055 // Member functions 00056 00057 static label nTerms(const direction dim) 00058 { 00059 return 00060 ( 00061 dim == 1 ? 3 : 00062 dim == 2 ? 5 : 00063 dim == 3 ? 7 : 0 00064 ); 00065 } 00066 00067 static void addCoeffs 00068 ( 00069 scalar* coeffs, 00070 const vector& d, 00071 const scalar weight, 00072 const direction dim 00073 ) 00074 { 00075 register label curIdx = 0; 00076 00077 coeffs[curIdx++] = weight; 00078 coeffs[curIdx++] = weight*d.x(); 00079 coeffs[curIdx++] = weight*sqr(d.x()); 00080 00081 if (dim >= 2) 00082 { 00083 coeffs[curIdx++] = weight*d.y(); 00084 coeffs[curIdx++] = weight*d.x()*d.y(); 00085 } 00086 if (dim == 3) 00087 { 00088 coeffs[curIdx++] = weight*d.z(); 00089 coeffs[curIdx++] = weight*d.x()*d.z(); 00090 } 00091 } 00092 }; 00093 00094 00095 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00096 00097 } // End namespace Foam 00098 00099 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00100 00101 #endif 00102 00103 // ************************ vim: set sw=4 sts=4 et: ************************ //
