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BWAPI
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00001 // Copyright (c) 2000,2001 Utrecht University (The Netherlands), 00002 // ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany), 00003 // INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg 00004 // (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria), 00005 // and Tel-Aviv University (Israel). All rights reserved. 00006 // 00007 // This file is part of CGAL (www.cgal.org); you can redistribute it and/or 00008 // modify it under the terms of the GNU Lesser General Public License as 00009 // published by the Free Software Foundation; version 2.1 of the License. 00010 // See the file LICENSE.LGPL distributed with CGAL. 00011 // 00012 // Licensees holding a valid commercial license may use this file in 00013 // accordance with the commercial license agreement provided with the software. 00014 // 00015 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE 00016 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 00017 // 00018 // $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.5-branch/Conic_2/include/CGAL/Conic_2.h $ 00019 // $Id: Conic_2.h 42932 2008-04-17 10:13:31Z spion $ 00020 // 00021 // 00022 // Author(s) : Bernd Gaertner, Sven Schoenherr <sven@inf.ethz.ch> 00023 00024 00025 #ifndef CGAL_CONIC_2_H 00026 #define CGAL_CONIC_2_H 00027 00028 #include <CGAL/Conic_misc.h> 00029 #include <CGAL/Dimension.h> 00030 00031 CGAL_BEGIN_NAMESPACE 00032 00033 template < class R_ > 00034 class Optimisation_ellipse_2; 00035 00036 template < class R_> 00037 class Conic_2 : public R_::Kernel_base::Conic_2 { 00038 00039 friend class Optimisation_ellipse_2<R_>; 00040 00041 public: 00042 00043 typedef Dimension_tag<2> Ambient_dimension; 00044 typedef Dimension_tag<1> Feature_dimension; 00045 00046 // types 00047 typedef R_ R; 00048 typedef typename R_::RT RT; 00049 typedef typename R_::FT FT; 00050 typedef typename R_::Kernel_base::Conic_2 _Conic_2; 00051 00052 // construction 00053 Conic_2 () 00054 {} 00055 00056 Conic_2 (RT r, RT s, RT t, RT u, RT v, RT w) 00057 : _Conic_2 (r, s, t, u, v, w) 00058 {} 00059 00060 // general access 00061 RT r () const 00062 { 00063 return _Conic_2::r(); 00064 } 00065 00066 RT s () const 00067 { 00068 return _Conic_2::s(); 00069 } 00070 00071 RT t () const 00072 { 00073 return _Conic_2::t(); 00074 } 00075 00076 RT u () const 00077 { 00078 return _Conic_2::u(); 00079 } 00080 00081 RT v () const 00082 { 00083 return _Conic_2::v(); 00084 } 00085 00086 RT w () const 00087 { 00088 return _Conic_2::w(); 00089 } 00090 00091 CGAL::Point_2<R> center () const 00092 { 00093 return _Conic_2::center(); 00094 } 00095 00096 00097 00098 // type related access 00099 Conic_type conic_type () const 00100 { 00101 return _Conic_2::conic_type(); 00102 } 00103 00104 bool is_hyperbola () const 00105 { 00106 return _Conic_2::is_hyperbola(); 00107 } 00108 00109 bool is_parabola () const 00110 { 00111 return _Conic_2::is_parabola(); 00112 } 00113 00114 bool is_ellipse () const 00115 { 00116 return _Conic_2::is_ellipse(); 00117 } 00118 00119 bool is_circle () const 00120 { 00121 return _Conic_2::is_circle(); 00122 } 00123 00124 bool is_empty () const 00125 { 00126 return _Conic_2::is_empty(); 00127 } 00128 00129 bool is_trivial () const 00130 { 00131 return _Conic_2::is_trivial(); 00132 } 00133 00134 bool is_degenerate () const 00135 { 00136 return _Conic_2::is_degenerate(); 00137 } 00138 00139 00140 00141 // orientation related access 00142 CGAL::Orientation orientation () const 00143 { 00144 return _Conic_2::orientation (); 00145 } 00146 00147 CGAL::Oriented_side oriented_side (const CGAL::Point_2<R>& p) const 00148 { 00149 return _Conic_2::oriented_side (p); 00150 } 00151 00152 bool has_on_positive_side (const CGAL::Point_2<R>& p) const 00153 { 00154 return _Conic_2::has_on_positive_side (p); 00155 } 00156 00157 bool has_on_negative_side (const CGAL::Point_2<R>& p) const 00158 { 00159 return _Conic_2::has_on_negative_side (p); 00160 } 00161 00162 bool has_on_boundary (const CGAL::Point_2<R>& p) const 00163 { 00164 return _Conic_2::has_on_boundary (p); 00165 } 00166 00167 bool has_on (const CGAL::Point_2<R>& p) const 00168 { 00169 return _Conic_2::has_on (p); 00170 } 00171 00172 Convex_side convex_side (const CGAL::Point_2<R>& p) const 00173 { 00174 return _Conic_2::convex_side (p); 00175 } 00176 00177 bool has_on_convex_side (const CGAL::Point_2<R>& p) const 00178 { 00179 return _Conic_2::has_on_convex_side (p); 00180 } 00181 00182 bool has_on_nonconvex_side (const CGAL::Point_2<R>& p) const 00183 { 00184 return _Conic_2::has_on_nonconvex_side (p); 00185 } 00186 00187 00188 00189 // comparisons 00190 bool operator == ( const Conic_2<R_>& c) const 00191 { 00192 return _Conic_2::operator == ( (Conic_2)c); 00193 } 00194 00195 bool operator != ( const Conic_2<R_>& c) const 00196 { 00197 return( ! operator == ( c)); 00198 } 00199 00200 // set methods 00201 void set (RT r, RT s, RT t, 00202 RT u, RT v, RT w) 00203 { 00204 _Conic_2::set (r, s, t, u, v, w); 00205 } 00206 00207 void set_opposite () 00208 { 00209 _Conic_2::set_opposite(); 00210 } 00211 00212 void set_circle (const CGAL::Point_2<R>& p1, const CGAL::Point_2<R>& p2, 00213 const CGAL::Point_2<R>& p3) 00214 { 00215 // the unique circle through the three points 00216 _Conic_2::set_circle(p1, p2, p3); 00217 } 00218 00219 void set_linepair (const CGAL::Point_2<R>& p1, const CGAL::Point_2<R>& p2, 00220 const CGAL::Point_2<R>& p3, const CGAL::Point_2<R>& p4) 00221 { 00222 _Conic_2::set_linepair (p1, p2, p3, p4); 00223 } 00224 00225 void set_ellipse (const CGAL::Point_2<R>& p1, const CGAL::Point_2<R>& p2, 00226 const CGAL::Point_2<R>& p3) 00227 { 00228 _Conic_2::set_ellipse (p1, p2, p3); 00229 } 00230 00231 void set_ellipse (const CGAL::Point_2<R>& p1, const CGAL::Point_2<R>& p2, 00232 const CGAL::Point_2<R>& p3, const CGAL::Point_2<R>& p4, 00233 CGAL::Orientation o = POSITIVE) 00234 { 00235 _Conic_2::set_ellipse (p1, p2, p3, p4, o); 00236 } 00237 00238 void set (const CGAL::Point_2<R>& p1, const CGAL::Point_2<R>& p2, 00239 const CGAL::Point_2<R>& p3, const CGAL::Point_2<R>& p4, 00240 const CGAL::Point_2<R>& p5, 00241 CGAL::Orientation o = POSITIVE) 00242 { 00243 _Conic_2::set (p1, p2, p3, p4, p5, o); 00244 } 00245 00246 00247 00248 private: 00249 void set_linear_combination ( 00250 const RT& a1, const Conic_2<R>& c1, 00251 const RT& a2, const Conic_2<R>& c2) 00252 { 00253 _Conic_2::set_linear_combination (a1, c1, a2, c2); 00254 } 00255 00256 static void set_two_linepairs (const CGAL::Point_2<R>& p1, 00257 const CGAL::Point_2<R>& p2, 00258 const CGAL::Point_2<R>& p3, 00259 const CGAL::Point_2<R>& p4, 00260 Conic_2<R>& pair1, 00261 Conic_2<R>& pair2) 00262 { 00263 _Conic_2::set_two_linepairs (p1, p2, p3, p4, pair1, pair2); 00264 } 00265 00266 void set_ellipse (const Conic_2<R>& pair1, 00267 const Conic_2<R>& pair2) 00268 { 00269 _Conic_2::set_ellipse (pair1, pair2); 00270 } 00271 00272 void set (const Conic_2<R>& c1, const Conic_2<R>& c2, 00273 const CGAL::Point_2<R>& p) 00274 { 00275 _Conic_2::set( c1, c2, p); this->analyse(); 00276 } 00277 00278 CGAL::Sign vol_derivative (RT dr, RT ds, 00279 RT dt, RT du, 00280 RT dv, RT dw) const 00281 { 00282 return _Conic_2::vol_derivative (dr, ds, dt, du, dv, dw); 00283 } 00284 00285 double vol_minimum (RT dr, RT ds, 00286 RT dt, RT du, 00287 RT dv, RT dw) const 00288 { 00289 return _Conic_2::vol_minimum (dr, ds, dt, du, dv, dw); 00290 } 00291 00292 00293 }; 00294 00295 00296 00297 #ifndef CGAL_NO_OSTREAM_INSERT_CONIC_2 00298 template< class R_> 00299 std::ostream& operator << ( std::ostream& os, const Conic_2<R_>& c) 00300 { 00301 return( os << c.r() << ' ' << c.s() << ' ' << c.t() << ' ' 00302 << c.u() << ' ' << c.v() << ' ' << c.w()); 00303 } 00304 #endif // CGAL_NO_OSTREAM_INSERT_CONIC_2 00305 00306 CGAL_END_NAMESPACE 00307 00308 #endif // CGAL_CONIC_2_H 00309 00310 // ===== EOF ==================================================================
1.7.6.1
