Milena (Olena)  User documentation 2.0a Id
hyper_directional.hh
00001 // Copyright (C) 2007, 2008, 2009, 2011 EPITA Research and Development
00002 // 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_HYPER_DIRECTIONAL_HH
00028 # define MLN_CANVAS_BROWSING_HYPER_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 
00075       struct hyper_directional_t : public Browsing< hyper_directional_t >
00076       {
00077         // This default constructor is needed for compilation with gcc
00078         // 4.6.0, gcc 4.6.1 and Clang.
00079         hyper_directional_t();
00080 
00081         template <typename F>
00082         void operator()(F& f) const;
00083       };
00084 
00085       extern const hyper_directional_t hyper_directional;
00086 
00087 # ifndef MLN_INCLUDE_ONLY
00088 
00089 #  ifndef MLN_WO_GLOBAL_VARS
00090 
00091       const hyper_directional_t hyper_directional;
00092 
00093 #  endif // ! MLN_WO_GLOBAL_VARS
00094 
00095 
00096       inline
00097       hyper_directional_t::hyper_directional_t()
00098       {
00099       }
00100 
00101       template <typename F>
00102       inline
00103       void
00104       hyper_directional_t::operator()(F& f) const
00105       {
00106         trace::entering("canvas::browsing::hyper_directional");
00107         mln_precondition(f.dir < f.dim);
00108         typedef typename F::I I;
00109 
00110         mln_psite(I)
00111           pmin = f.input.domain().pmin(),
00112           pmax = f.input.domain().pmax();
00113 
00114         f.p = pmin;
00115 
00116         f.init();
00117 
00118         do
00119         {
00120           f.next();
00121 
00122           for (int c = F::dim - 1; c >= 0; --c)
00123           {
00124             if (c == int(f.dir))
00125               continue;
00126             if (f.p[c] != pmax[c])
00127             {
00128               ++f.p[c];
00129               break;
00130             }
00131             f.p[c] = pmin[c];
00132           }
00133         } while (f.p != pmin);
00134 
00135         f.final();
00136         trace::exiting("canvas::browsing::hyper_directional");
00137       }
00138 
00139 # endif // ! MLN_INCLUDE_ONLY
00140 
00141     } // end of namespace mln::canvas::browsing
00142 
00143   } // end of namespace mln::canvas
00144 
00145 } // end of namespace mln
00146 
00147 #endif // ! MLN_CANVAS_BROWSING_HYPER_DIRECTIONAL_HH
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