1 //
2 // Copyright 2019-2020 Mateusz Loskot <mateusz at loskot dot net>
3 //
4 // Distributed under the Boost Software License, Version 1.0
5 // See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt
7 //
8 #include <boost/gil.hpp>
9 #include <boost/gil/extension/dynamic_image/dynamic_image_all.hpp>
10
11 #include <boost/core/lightweight_test.hpp>
12
13 #include "test_fixture.hpp"
14 #include "test_utility_output_stream.hpp"
15 #include "core/image/test_fixture.hpp"
16
17 namespace gil = boost::gil;
18 namespace fixture = boost::gil::test::fixture;
19
20 struct test_subimage_equals_image
21 {
22 template <typename Image>
operator ()test_subimage_equals_image23 void operator()(Image const&)
24 {
25 using image_t = Image;
26 fixture::dynamic_image i0(fixture::create_image<image_t>(4, 4, 128));
27 auto const v0 = gil::const_view(i0);
28 BOOST_TEST_EQ(v0.dimensions().x, 4);
29 BOOST_TEST_EQ(v0.dimensions().y, 4);
30 BOOST_TEST_EQ(v0.size(), 4 * 4);
31
32 // request with 2 x point_t values
33 {
34 auto v1 = gil::subimage_view(gil::view(i0), {0, 0}, i0.dimensions());
35 BOOST_TEST_EQ(v0.dimensions(), v1.dimensions());
36 BOOST_TEST_EQ(v0.size(), v1.size());
37 BOOST_TEST(gil::equal_pixels(v0, v1));
38 }
39 // request with 4 x dimension values
40 {
41 auto v1 = gil::subimage_view(gil::view(i0), 0, 0, i0.dimensions().x, i0.dimensions().y);
42 BOOST_TEST_EQ(v0.dimensions(), v1.dimensions());
43 BOOST_TEST_EQ(v0.size(), v1.size());
44 BOOST_TEST(gil::equal_pixels(v0, v1));
45 }
46 }
runtest_subimage_equals_image47 static void run()
48 {
49 boost::mp11::mp_for_each<fixture::image_types>(test_subimage_equals_image{});
50 }
51 };
52
53 struct test_subimage_equals_image_quadrants
54 {
55 template <typename Image>
operator ()test_subimage_equals_image_quadrants56 void operator()(Image const&)
57 {
58 using image_t = Image;
59 fixture::dynamic_image i0(fixture::create_image<image_t>(4, 4, 0));
60 auto v0 = gil::view(i0);
61 // create test image and set values of pixels in:
62 // quadrant 1
63 auto const i1 = fixture::create_image<image_t>(2, 2, 255);
64 gil::apply_operation(v0, fixture::fill_any_view<image_t>({2, 3, 6, 7}, gil::const_view(i1)[0]));
65 // quadrant 2
66 auto const i2 = fixture::create_image<image_t>(2, 2, 128);
67 gil::apply_operation(v0, fixture::fill_any_view<image_t>({0, 1, 4, 5}, gil::const_view(i2)[0]));
68 // quadrant 3
69 auto const i3 = fixture::create_image<image_t>(2, 2, 64);
70 gil::apply_operation(v0, fixture::fill_any_view<image_t>({8, 9, 12, 13}, gil::const_view(i3)[0]));
71 // quadrant 4
72 auto const i4 = fixture::create_image<image_t>(2, 2, 32);
73 gil::apply_operation(v0, fixture::fill_any_view<image_t>({10, 11, 14, 15}, gil::const_view(i4)[0]));
74
75 auto v1 = gil::subimage_view(gil::view(i0), { 2, 0 }, i0.dimensions() / 2);
76 BOOST_TEST(gil::equal_pixels(v1, gil::const_view(i1)));
77 auto v2 = gil::subimage_view(gil::view(i0), { 0, 0 }, i0.dimensions() / 2);
78 BOOST_TEST(gil::equal_pixels(v2, gil::const_view(i2)));
79 auto v3 = gil::subimage_view(gil::view(i0), { 0, 2 }, i0.dimensions() / 2);
80 BOOST_TEST(gil::equal_pixels(v3, gil::const_view(i3)));
81 auto v4 = gil::subimage_view(gil::view(i0), { 2, 2 }, i0.dimensions() / 2);
82 BOOST_TEST(gil::equal_pixels(v4, gil::const_view(i4)));
83 }
runtest_subimage_equals_image_quadrants84 static void run()
85 {
86 boost::mp11::mp_for_each<fixture::image_types>(test_subimage_equals_image_quadrants{});
87 }
88 };
89
main()90 int main()
91 {
92 test_subimage_equals_image::run();
93 test_subimage_equals_image_quadrants::run();
94
95 return ::boost::report_errors();
96 }
97