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draw/box.hh
1 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development
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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 
62  template <typename I, typename B>
63  void box(Image<I>& ima,
64  const Box<B>& b,
65  const mln_value(I)& v);
66 
67 
68 # ifndef MLN_INCLUDE_ONLY
69 
70  template <typename I, typename B>
71  inline
72  void box(Image<I>& ima,
73  const Box<B>& b,
74  const mln_value(I)& v)
75  {
76  mln_precondition(exact(ima).is_valid());
77 
78  mln_psite(I) pmin = exact(b).pmin();
79  mln_psite(I) pmax = exact(b).pmax();
80 
81  mln_precondition(exact(ima).has(pmin) && exact(ima).has(pmax));
82 
83  mln_psite(I) p1 (pmin[0], pmin[1]);
84  mln_psite(I) p2 (pmax[0], pmin[1]);
85  mln_psite(I) p3 (pmin[0], pmax[1]);
86  mln_psite(I) p4 (pmax[0], pmax[1]);
87 
88  draw::line (ima, p1, p2, v);
89  draw::line (ima, p2, p4, v);
90  draw::line (ima, p4, p3, v);
91  draw::line (ima, p3, p1, v);
92  }
93 
94 # endif // ! MLN_INCLUDE_ONLY
95 
96  } // end of namespace mln::draw
97 
98 } // end of namespace mln
99 
100 
101 #endif // ! MLN_DRAW_BOX_HH