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::quadraticFitPolynomial 00026 00027 Description 00028 Quadratic polynomial for centred interpolation fitting. 00029 00030 Can be used with the CentredFit scheme to create a quadratic surface 00031 interpolation scheme 00032 00033 \*---------------------------------------------------------------------------*/ 00034 00035 #ifndef quadraticFitPolynomial_H 00036 #define quadraticFitPolynomial_H 00037 00038 #include <OpenFOAM/vector.H> 00039 00040 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00041 00042 namespace Foam 00043 { 00044 00045 /*---------------------------------------------------------------------------*\ 00046 Class quadraticFitPolynomial Declaration 00047 \*---------------------------------------------------------------------------*/ 00048 00049 class quadraticFitPolynomial 00050 { 00051 public: 00052 00053 // Member functions 00054 00055 static label nTerms(const direction dim) 00056 { 00057 return 00058 ( 00059 dim == 1 ? 3 : 00060 dim == 2 ? 6 : 00061 dim == 3 ? 9 : 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 coeffs[curIdx++] = weight*sqr(d.x()); 00078 00079 if (dim >= 2) 00080 { 00081 coeffs[curIdx++] = weight*d.y(); 00082 coeffs[curIdx++] = weight*d.x()*d.y(); 00083 coeffs[curIdx++] = weight*sqr(d.y()); 00084 } 00085 if (dim == 3) 00086 { 00087 coeffs[curIdx++] = weight*d.z(); 00088 coeffs[curIdx++] = weight*d.x()*d.z(); 00089 coeffs[curIdx++] = weight*sqr(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: ************************ //
