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pixter1d_more.cc
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19 // instantiate templates or use macros or inline functions from this
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25 
26 #include <mln/core/image/image1d.hh>
27 
28 
29 const unsigned size = 20;
30 const int v = 51;
31 
32 
33 template <typename I>
34 void test_fill(I& ima)
35 {
36  mln_pixter(I) pxl(ima);
37  unsigned i = 0;
38  for_all(pxl)
39  {
40  ++i;
41  pxl.val() = v;
42  }
43  mln_assertion(i == size);
44  mln_assertion(! pxl.is_valid());
45 
46  mln_piter(I) p(ima.domain());
47  for_all(p)
48  mln_assertion(ima(p) == v);
49 }
50 
51 
52 template <typename I>
53 void test_const(const I& imac, I& ima)
54 {
55  {
56  mln_pixter(const I) pxl(imac); // const is mandatory
57  pxl.start();
58  mln_assertion(pxl.val() == v);
59  // pxl.val() = v; // error is OK since pixter on 'const I'
60  }
61  {
62  // mln_pixter(I) pxl_(imac); // error is OK since mutable I but const imac
63  mln_pixter(I) pxl(ima);
64  pxl.start();
65  pxl.val() = 2 * pxl.val();
66  mln_assertion(pxl.val() == 2 * v);
67  }
68  {
69  mln_pixter(const I) pxl(ima); // const promotion is OK
70  pxl.start();
71  mln_assertion(pxl.val() == 2 * v);
72  // pxl.val() = v; // error is OK since pixter on 'const I'
73  }
74 }
75 
76 
77 
78 int main()
79 {
80  using namespace mln;
81 
82  typedef image1d<int> I;
83  I ima(size);
84 
85  test_fill(ima);
86  test_const(ima, ima);
87 }