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draw/line.hh
1 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development
2 // Laboratory (LRDE)
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26 
27 #ifndef MLN_DRAW_LINE_HH
28 # define MLN_DRAW_LINE_HH
29 
34 
35 # include <mln/core/concept/image.hh>
36 # include <mln/core/site_set/p_line2d.hh>
37 # include <mln/core/image/imorph/safe.hh>
38 # include <mln/data/paste.hh>
39 # include <mln/pw/image.hh>
40 # include <mln/pw/cst.hh>
41 
42 
43 namespace mln
44 {
45 
46  namespace draw
47  {
48 
62  template <typename I>
63  void line(Image<I>& ima,
64  const mln_psite(I)& beg, const mln_psite(I)& end,
65  const mln_value(I)& v);
66 
67 
68 # ifndef MLN_INCLUDE_ONLY
69 
70  template <typename I>
71  inline
72  void line(Image<I>& ima_,
73  const mln_psite(I)& beg, const mln_psite(I)& end,
74  const mln_value(I)& v)
75  {
76  I& ima = exact(ima_);
77  mln_precondition(ima.is_valid());
78  if (! ima.has(beg))
79  trace::warning("Begin site is not part of the given image.");
80  if (! ima.has(end))
81  trace::warning("End site is not part of the given image.");
82  data::paste(pw::cst(v) | p_line2d(beg, end),
83  safe(ima).rw());
84  }
85 
86 # endif // ! MLN_INCLUDE_ONLY
87 
88  } // end of namespace mln::draw
89 
90 } // end of namespace mln
91 
92 
93 #endif // ! MLN_DRAW_LINE_HH