Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 2007, 2008, 2009, 2010, 2011 EPITA Research and 00002 // Development Laboratory (LRDE) 00003 // 00004 // This file is part of Olena. 00005 // 00006 // Olena is free software: you can redistribute it and/or modify it under 00007 // the terms of the GNU General Public License as published by the Free 00008 // Software Foundation, version 2 of the License. 00009 // 00010 // Olena is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 // General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00017 // 00018 // As a special exception, you may use this file as part of a free 00019 // software project without restriction. Specifically, if other files 00020 // instantiate templates or use macros or inline functions from this 00021 // file, or you compile this file and link it with other files to produce 00022 // an executable, this file does not by itself cause the resulting 00023 // executable to be covered by the GNU General Public License. This 00024 // exception does not however invalidate any other reasons why the 00025 // executable file might be covered by the GNU General Public License. 00026 00027 #ifndef MLN_CANVAS_BROWSING_DIRECTIONAL_HH 00028 # define MLN_CANVAS_BROWSING_DIRECTIONAL_HH 00029 00033 00034 # include <mln/core/concept/browsing.hh> 00035 # include <mln/core/concept/image.hh> 00036 00037 namespace mln 00038 { 00039 00040 namespace canvas 00041 { 00042 00043 namespace browsing 00044 { 00045 00047 00090 struct directional_t : public Browsing< directional_t > 00091 { 00092 // This default constructor is needed for compilation with gcc 00093 // 4.6.0, gcc 4.6.1 and Clang. 00094 directional_t(); 00095 00096 template <typename F> 00097 void operator()(F& f) const; 00098 }; 00099 00100 extern const directional_t directional; 00101 00102 # ifndef MLN_INCLUDE_ONLY 00103 00104 # ifndef MLN_WO_GLOBAL_VARS 00105 00106 const directional_t directional; 00107 00108 # endif // ! MLN_WO_GLOBAL_VARS 00109 00110 inline 00111 directional_t::directional_t() 00112 { 00113 } 00114 00115 template <typename F> 00116 inline 00117 void 00118 directional_t::operator()(F& f) const 00119 { 00120 trace::entering("canvas::browsing::directional"); 00121 mln_precondition(f.dir < f.dim); 00122 typedef typename F::I I; 00123 00124 mln_psite(I) 00125 pmin = f.input.domain().pmin(), 00126 pmax = f.input.domain().pmax(); 00127 00128 f.p = pmin; 00129 00130 f.init(); 00131 00132 do 00133 { 00134 00135 // Browse the run 00136 f.init_run(); 00137 while (f.p[f.dir] <= pmax[f.dir]) 00138 { 00139 f.next(); 00140 ++f.p[f.dir]; 00141 } 00142 f.p[f.dir] = pmin[f.dir]; 00143 00144 00145 // Select the next run start 00146 for (int c = F::dim - 1; c >= 0; --c) 00147 { 00148 if (c == int(f.dir)) 00149 continue; 00150 if (f.p[c] != pmax[c]) 00151 { 00152 ++f.p[c]; 00153 break; 00154 } 00155 f.p[c] = pmin[c]; 00156 } 00157 00158 } while (f.p != pmin); 00159 00160 f.final(); 00161 trace::exiting("canvas::browsing::directional"); 00162 } 00163 00164 # endif // ! MLN_INCLUDE_ONLY 00165 00166 } // end of namespace mln::canvas::browsing 00167 00168 } // end of namespace mln::canvas 00169 00170 } // end of namespace mln 00171 00172 #endif // ! MLN_CANVAS_BROWSING_DIRECTIONAL_HH