00001 //=========================================================================== 00002 // GoTools - SINTEF Geometry Tools version 1.1 00003 // 00004 // GoTools module: CORE 00005 // 00006 // Copyright (C) 2000-2007 SINTEF ICT, Applied Mathematics, Norway. 00007 // 00008 // This program is free software; you can redistribute it and/or 00009 // modify it under the terms of the GNU General Public License 00010 // as published by the Free Software Foundation version 2 of the License. 00011 // 00012 // This program is distributed in the hope that it will be useful, 00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 // GNU General Public License for more details. 00016 // 00017 // You should have received a copy of the GNU General Public License 00018 // along with this program; if not, write to the Free Software 00019 // Foundation, Inc., 00020 // 59 Temple Place - Suite 330, 00021 // Boston, MA 02111-1307, USA. 00022 // 00023 // Contact information: E-mail: tor.dokken@sintef.no 00024 // SINTEF ICT, Department of Applied Mathematics, 00025 // P.O. Box 124 Blindern, 00026 // 0314 Oslo, Norway. 00027 // 00028 // Other licenses are also available for this software, notably licenses 00029 // for: 00030 // - Building commercial software. 00031 // - Building software whose source code you wish to keep private. 00032 //=========================================================================== 00033 #ifndef _CURVATUREANALYSIS_H 00034 #define _CURVATUREANALYSIS_H 00035 00036 00037 #include "ParamSurface.h" 00038 #include "Point.h" 00039 00042 00043 namespace Go 00044 { 00047 00063 void computeFirstFundamentalForm(const ParamSurface& sf, 00064 double u, double v, int derivs, 00065 std::vector<double>& form); 00066 00081 void computeSecondFundamentalForm(const ParamSurface& sf, 00082 double u, double v, 00083 double form1[3], 00084 double form2[3]); 00085 00092 void curvatures(const ParamSurface& sf, 00093 double u, double v, 00094 double& K, double& H); 00095 00096 void principalCurvatures(const ParamSurface& sf, 00097 double u, double v, 00098 double& k1, Point& d1, 00099 double& k2, Point& d2); 00101 } // namespace Go 00102 00103 #endif // _CURVATUREANALYSIS_H 00104 00105
1.5.1