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draw/box.hh
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26 
27 #ifndef MLN_DRAW_BOX_HH
28 # define MLN_DRAW_BOX_HH
29 
37 # include <mln/core/concept/image.hh>
38 # include <mln/core/alias/box2d.hh>
39 # include <mln/data/paste.hh>
40 # include <mln/draw/line.hh>
41 # include <mln/pw/image.hh>
42 # include <mln/pw/cst.hh>
43 
44 
45 namespace mln
46 {
47 
48  namespace draw
49  {
50 
63  template <typename I, typename B>
64  void box(Image<I>& ima,
65  const Box<B>& b,
66  const mln_value(I)& v);
67 
68 
69 # ifndef MLN_INCLUDE_ONLY
70 
71  template <typename I, typename B>
72  inline
73  void box(Image<I>& ima,
74  const Box<B>& b,
75  const mln_value(I)& v)
76  {
77  mln_precondition(exact(ima).is_valid());
78 
79  mln_psite(I) pmin = exact(b).pmin();
80  mln_psite(I) pmax = exact(b).pmax();
81 
82  mln_precondition(exact(ima).has(pmin) && exact(ima).has(pmax));
83 
84  mln_psite(I) p1 (pmin[0], pmin[1]);
85  mln_psite(I) p2 (pmax[0], pmin[1]);
86  mln_psite(I) p3 (pmin[0], pmax[1]);
87  mln_psite(I) p4 (pmax[0], pmax[1]);
88 
89  draw::line (ima, p1, p2, v);
90  draw::line (ima, p2, p4, v);
91  draw::line (ima, p4, p3, v);
92  draw::line (ima, p3, p1, v);
93  }
94 
95 # endif // ! MLN_INCLUDE_ONLY
96 
97  } // end of namespace mln::draw
98 
99 } // end of namespace mln
100 
101 
102 #endif // ! MLN_DRAW_BOX_HH