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snake_generic_2d_vert.cc
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3 // This file is part of Olena.
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5 // Olena is free software: you can redistribute it and/or modify it under
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17 // As a special exception, you may use this file as part of a free
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19 // instantiate templates or use macros or inline functions from this
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24 // executable file might be covered by the GNU General Public License.
25 
26 #include <mln/core/image/image2d.hh>
27 #include <mln/canvas/browsing/snake_generic.hh>
28 #include <mln/fun/p2v/iota.hh>
29 #include <mln/debug/println.hh>
30 
31 
32 template <typename I, typename F>
33 struct assign_browsing_functor
34 {
35  typedef mln_site(I) S;
36  enum { dim = S::dim };
37 
38  typedef assign_browsing_functor<I, F> self;
39  typedef mln_deduce(I, psite, delta) dpsite;
40  typedef void (assign_browsing_functor<I,F>::*move_fun)();
41 
42  I input;
43  F f;
44  std::vector<move_fun> moves;
45  std::vector<dpsite> dps;
46 
47  assign_browsing_functor(I& input, F f = F())
48  : input(input),
49  f(f),
50  moves(3),
51  dps(3)
52  {
53  dps[0] = dpsite(0, 1);
54  dps[1] = dpsite(1, 0);
55  dps[2] = dpsite(-1, 0);
56  moves[0] = &self::fwd;
57  moves[1] = &self::down;
58  moves[2] = &self::up;
59  }
60 
61  mln_psite(I) p;
62 
63  void init() {}
64  void final() {}
65  void next()
66  {
67  input(p) = f(p);
68  }
69  void fwd() { std::cout << "fwd" << std::endl; next(); }
70  void up() { std::cout << "up" << std::endl; next(); }
71  void down() { std::cout << "down" << std::endl; next(); }
72 };
73 
74 namespace mln
75 {
76 
77  template <typename I, typename F, typename B>
78  void my_test(Image<I>& ima_,
79  const Function_v2v<F>& f_,
80  const Browsing<B>& browse_)
81  {
82  I& ima = exact(ima_);
83  const F& f = exact(f_);
84  const B& browse = exact(browse_);
85 
86  assign_browsing_functor<I, F> fun(ima, f);
87  browse(fun);
88  }
89 
90 }
91 
92 
93 int main()
94 {
95  using namespace mln;
96  image2d<unsigned> ima2(3, 3);
97 
98  std::cout << ima2.bbox() << std::endl;
100  debug::println(ima2);
101 }