$extrastylesheet
Olena  User documentation 2.1
An Image Processing Platform
 All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
iota.cc
1 // Copyright (C) 2007, 2008, 2009, 2013 EPITA Research and Development
2 // Laboratory (LRDE).
3 //
4 // This file is part of Olena.
5 //
6 // Olena is free software: you can redistribute it and/or modify it under
7 // the terms of the GNU General Public License as published by the Free
8 // Software Foundation, version 2 of the License.
9 //
10 // Olena is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with Olena. If not, see <http://www.gnu.org/licenses/>.
17 //
18 // As a special exception, you may use this file as part of a free
19 // software project without restriction. Specifically, if other files
20 // instantiate templates or use macros or inline functions from this
21 // file, or you compile this file and link it with other files to produce
22 // an executable, this file does not by itself cause the resulting
23 // executable to be covered by the GNU General Public License. This
24 // exception does not however invalidate any other reasons why the
25 // executable file might be covered by the GNU General Public License.
26 
27 #include <mln/core/image/image2d.hh>
28 
29 #include <mln/value/int_u8.hh>
30 
31 #include <mln/debug/iota.hh>
32 #include <mln/data/compare.hh>
33 #include <mln/test/predicate.hh>
34 
35 #include <mln/pw/all.hh>
36 #include <mln/fun/vv2v/diff_abs.hh>
37 
38 
39 int main()
40 {
41  using namespace mln;
42  using value::int_u8;
43 
44  // Exercise mln::debug::iota with an image of ints.
45  {
46  int vs[4][4] = { { 1, 2, 3, 4},
47  { 5, 6, 7, 8},
48  { 9, 10, 11, 12},
49  {13, 14, 15, 16} };
50 
51  image2d<int> ref = make::image(vs);
52  image2d<int> ima(4, 4);
53 
54  debug::iota(ima);
55  mln_assertion(ima == ref);
56  }
57 
58  // Exercise mln::debug::iota with an image of floats.
59  {
60  float vs[4][4] = { { 1.f, 2.f, 3.f, 4.f},
61  { 5.f, 6.f, 7.f, 8.f},
62  { 9.f, 10.f, 11.f, 12.f},
63  {13.f, 14.f, 15.f, 16.f} };
64 
65  image2d<float> ref = make::image(vs);
66  image2d<float> ima(4, 4);
67 
68  debug::iota(ima);
69  // Use a ``tolerant'' comparison.
70  float threshold = 0.0001f;
71  mln_assertion(test::predicate(ima.domain(),
73  pw::value(ima),
74  pw::value(ref))
75  < pw::cst(threshold)));
76  }
77 }