00001 // Copyright (C) 2008, 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #include <mln/make/dual_neighb.hh> 00027 #include <mln/core/alias/neighb2d.hh> 00028 #include <mln/core/image/image2d.hh> 00029 #include <mln/opt/at.hh> 00030 00031 00032 00033 template <typename I, typename N> 00034 unsigned count(const I& ima, const N& nbh) 00035 { 00036 mln_piter(I) p(ima.domain()); 00037 mln_niter(N) n(nbh, p); 00038 unsigned c = 0; 00039 for_all(p) 00040 for_all(n) 00041 ++c; 00042 return c; 00043 } 00044 00045 00046 int main() 00047 { 00048 using namespace mln; 00049 00050 image2d<bool> ima(1, 2, 1); 00051 opt::at(ima, 0, 0) = true; 00052 opt::at(ima, 0, 1) = false; 00053 00054 mln_assertion( count(ima, make::dual_neighb(ima, c4(), c8())) 00055 == c4().size() + c8().size() ); 00056 00057 mln_assertion( make::dual_neighb(ima, c4(), c8()).foreground() == c4() ); 00058 mln_assertion( make::dual_neighb(ima, c4(), c8()).background() == c8() ); 00059 00060 // We can observe that the neighboord is not restricted by the 00061 // respective domains defined by ima(p) == false and ima(p) == true: 00062 // for instance, at (0,0) we are in the *object* (ima(0,0) == true), 00063 // thus the neighborhood is c4(), yet from p we browse neighbors n 00064 // that are in the *background* (ima(n) == false). 00065 }
1.7.1