00001 /*************************************************************************** 00002 ** 00003 ** This file is part of QGpCoreTools. 00004 ** 00005 ** This library is free software; you can redistribute it and/or 00006 ** modify it under the terms of the GNU Lesser General Public 00007 ** License as published by the Free Software Foundation; either 00008 ** version 2.1 of the License, or (at your option) any later version. 00009 ** 00010 ** This file is distributed in the hope that it will be useful, but WITHOUT 00011 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00013 ** License for more details. 00014 ** 00015 ** You should have received a copy of the GNU Lesser General Public 00016 ** License along with this library; if not, write to the Free Software 00017 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00018 ** 00019 ** See http://www.geopsy.org for more information. 00020 ** 00021 ** Created : 2004-05-28 00022 ** Authors : 00023 ** Marc Wathelet 00024 ** Marc Wathelet (ULg, Liège, Belgium) 00025 ** Marc Wathelet (LGIT, Grenoble, France) 00026 ** 00027 ***************************************************************************/ 00028 00029 #ifndef Segment2D_H 00030 #define Segment2D_H 00031 00032 #include "QGpCoreToolsDLLExport.h" 00033 #include "Point2D.h" 00034 #include "Rect.h" 00035 00036 namespace QGpCoreTools { 00037 00038 class QGPCORETOOLS_EXPORT Segment2D 00039 { 00040 public: 00041 Segment2D() {} 00042 Segment2D(const Point2D& p1, const Point2D& p2) {set(p1,p2);} 00043 Segment2D(double x1, double y1, double x2, double y2) {set(x1, y1, x2, y2);} 00044 Segment2D(const Segment2D& o); 00045 00046 bool intersects(const Segment2D& seg, Point2D& p) const; 00047 Segment2D rotated(const Point2D& center, const Angle &a) const; 00048 double distanceTo(const Point2D& p) const; 00049 Point2D p1() const {return _p1;} 00050 Point2D p2() const {return _p2;} 00051 Point2D pointAtFrom1(double distance); 00052 Point2D pointAtFrom2(double distance); 00053 void set(const Point2D& p1, const Point2D& p2); 00054 void set(double x1, double y1, double x2, double y2); 00055 bool includes(const Point2D& p, double precision=1e-10) const; 00056 double length() const {return _p1.distanceTo(_p2);} 00057 protected: 00058 Point2D _p1,_p2; 00059 Rect _limits; 00060 }; 00061 00062 } // namespace QGpCoreTools 00063 00064 #endif // SEGMENT2D.H
