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object_links_bbox_ratio.hh
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26 
27 #ifndef SCRIBO_FILTER_OBJECT_LINKS_BBOX_RATIO_HH
28 # define SCRIBO_FILTER_OBJECT_LINKS_BBOX_RATIO_HH
29 
34 
35 
36 # include <mln/util/array.hh>
37 
38 # include <scribo/core/macros.hh>
39 # include <scribo/core/object_links.hh>
40 # include <scribo/core/component_set.hh>
41 
42 namespace scribo
43 {
44 
45  namespace filter
46  {
47 
48  using namespace mln;
49 
62  template <typename L>
63  object_links<L>
64  object_links_bbox_ratio(const object_links<L>& links,
65  unsigned dim,
66  float max_ratio);
67 
68 
69 # ifndef MLN_INCLUDE_ONLY
70 
71 
72  template <typename L>
73  object_links<L>
74  object_links_bbox_ratio(const object_links<L>& links,
75  unsigned dim,
76  float max_ratio)
77  {
78  mln_trace("scribo::filter::object_links_bbox_ratio");
79 
80  mln_precondition(links.is_valid());
81 
82  const component_set<L>& components = links.components();
83  object_links<L> output = links.duplicate();
84 
85  for_all_links(i, links)
86  if (links.is_linked(i))
87  {
88  float
89  lmin = components(i).bbox().pmax()[dim]
90  - components(i).bbox().pmin()[dim],
91  lmax = components(links(i)).bbox().pmax()[dim]
92  - components(links(i)).bbox().pmin()[dim];
93 
94  if (lmin > lmax)
95  std::swap(lmin, lmax);
96 
97  if ((lmax/ lmin) > max_ratio)
98  output.clear(i);
99  }
100 
101  return output;
102  }
103 
104 
105 # endif // ! MLN_INCLUDE_ONLY
106 
107 
108  } // end of namespace scribo::filter
109 
110 } // end of namespace scribo
111 
112 
113 #endif // ! SCRIBO_FILTER_OBJECT_LINKS_BBOX_RATIO_HH