00001 //=========================================================================== 00002 // GoTools - SINTEF Geometry Tools 00003 // 00004 // GoTools module: Intersections, version 1.0 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 _LINEINT_H 00034 #define _LINEINT_H 00035 00036 00037 #include "AlgObj2DInt.h" 00038 #include "Point.h" 00039 00040 00041 namespace Go { 00044 00045 00046 00048 00049 class Line2DInt : public AlgObj2DInt { 00050 public: 00054 Line2DInt(Point point, Point dir); 00055 00061 Line2DInt(double a, double b, double c); 00062 00064 virtual ~Line2DInt(){}; 00065 00068 double a(); 00069 00072 double b(); 00073 00076 double c(); 00077 00078 private: 00079 00080 Point point_; // 2D ref point. 00081 Point dir_; // 2D line dir. 00082 00083 // Compute point_ & dir_ based on a, b & c (as given by factors_). 00084 void computePoints(); 00085 00086 // Compute a, b & c based on point_ & dir_. 00087 void computeConstants(Point point, Point dir, 00088 double& a, double& b, double& c); 00089 00090 }; 00091 00092 00094 } // namespace Go 00095 00096 00097 #endif // _LINEINT_H 00098