2 // Copyright 2019 Mateusz Loskot <mateusz at loskot dot net>
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
8 #include <boost/gil.hpp>
9 #include <boost/assert.hpp>
12 #include <initializer_list>
16 #include <type_traits>
18 namespace boost { namespace gil {
20 namespace test { namespace fixture {
22 using image_types = std::tuple
39 struct consecutive_value
41 consecutive_value(T start) : current_(start)
43 BOOST_TEST(static_cast<int>(current_) >= 0);
48 BOOST_ASSERT(static_cast<int>(current_) + 1 > 0);
56 struct reverse_consecutive_value
58 reverse_consecutive_value(T start) : current_(start)
60 BOOST_ASSERT(static_cast<int>(current_) > 0);
65 BOOST_ASSERT(static_cast<int>(current_) + 1 >= 0);
75 static_assert(std::is_integral<T>::value, "T must be integral type");
76 static constexpr auto range_min = std::numeric_limits<T>::min();
77 static constexpr auto range_max = std::numeric_limits<T>::max();
79 random_value() : rng_(rd_()), uid_(range_min, range_max) {}
83 auto value = uid_(rng_);
84 BOOST_ASSERT(range_min <= value && value <= range_max);
85 return static_cast<T>(value);
88 std::random_device rd_;
90 std::uniform_int_distribution<typename gil::promote_integral<T>::type> uid_;
93 template <typename Image, typename Generator>
94 auto generate_image(std::ptrdiff_t size_x, std::ptrdiff_t size_y, Generator&& generate) -> Image
96 using pixel_t = typename Image::value_type;
98 Image out(size_x, size_y);
99 gil::for_each_pixel(view(out), [&generate](pixel_t& p) {
100 gil::static_generate(p, [&generate]() { return generate(); });
106 template <typename Image>
107 auto create_image(std::ptrdiff_t size_x, std::ptrdiff_t size_y, int channel_value) -> Image
109 using pixel_t = typename Image::value_type;
110 using channel_t = typename gil::channel_type<pixel_t>::type;
111 static_assert(std::is_integral<channel_t>::value, "channel must be integral type");
113 Image out(size_x, size_y);
114 gil::for_each_pixel(view(out), [&channel_value](pixel_t& p) {
115 gil::static_fill(p, static_cast<channel_t>(channel_value));
121 }}}} // namespace boost::gil::test::fixture