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central_sites.hh
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26 
27 #ifndef SCRIBO_CORE_CENTRAL_SITES_HH
28 # define SCRIBO_CORE_CENTRAL_SITES_HH
29 
33 
34 # include <mln/util/couple.hh>
35 # include <mln/core/site_set/box.hh>
36 
37 namespace scribo
38 {
39  using namespace mln;
40 
45 
63  template <typename P>
65  central_sites(const box<P>& b, unsigned dim);
66 
67 
68 # ifndef MLN_INCLUDE_ONLY
69 
70 
71  template <typename P>
72  inline
74  central_sites(const box<P>& b, unsigned dim)
75  {
76  mln_trace("scribo::central_sites");
77  mln_precondition(b.is_valid());
78 
79  unsigned n = b.pmax()[dim] - b.pmin()[dim];
80 
81  P p1 = b.center();
82  p1[dim] -= n / 2;
83  P p2 = b.center();
84  p2[dim] += n / 2;
85 
86  return mln::make::couple(p1, p2);
87  }
88 
89 # endif // ! MLN_INCLUDE_ONLY
90 
91 } // end of namespace scribo
92 
93 
94 #endif // ! SCRIBO_CORE_CENTRAL_SITES_HH