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/color_base.hpp>
9 #include <boost/gil/pixel.hpp>
10 #include <boost/gil/typedefs.hpp>
12 #include <type_traits>
14 #define BOOST_TEST_MODULE test_color_base_static_transform
15 #include "unit_test.hpp"
17 namespace gil = boost::gil;
19 BOOST_AUTO_TEST_CASE(single_source_gray8_to_gray8)
21 gil::gray8_pixel_t src{128};
22 gil::gray8_pixel_t dst{0};
23 gil::static_transform(src, dst, [](std::uint8_t src_channel) {
24 return src_channel; // copy
26 BOOST_TEST(gil::at_c<0>(src) == gil::at_c<0>(dst));
29 BOOST_AUTO_TEST_CASE(single_source_rgb8_to_rgb8)
31 gil::rgb8_pixel_t src{32, 64, 128};
32 gil::rgb8_pixel_t dst{0, 0, 0};
33 gil::static_transform(src, dst, [](std::uint8_t src_channel) {
34 return src_channel; // copy
36 BOOST_TEST(gil::at_c<0>(src) == gil::at_c<0>(dst));
37 BOOST_TEST(gil::at_c<1>(src) == gil::at_c<1>(dst));
38 BOOST_TEST(gil::at_c<2>(src) == gil::at_c<2>(dst));
41 BOOST_AUTO_TEST_CASE(single_source_rgb8_to_gray8)
43 // Transformation of wider space to narrower space is a valid operation
44 gil::rgb8_pixel_t src{32,64, 128};
45 gil::gray8_pixel_t dst{0};
46 gil::static_transform(src, dst, [](std::uint8_t src_channel) {
47 return src_channel; // copy
49 BOOST_TEST(gil::at_c<0>(dst) == std::uint8_t{32});
52 BOOST_AUTO_TEST_CASE(single_source_cmyk8_to_rgb8)
54 // Transformation of wider space to narrower space is a valid operation
55 gil::cmyk8_pixel_t src{16, 32, 64, 128};
56 gil::rgb8_pixel_t dst{0, 0, 0};
57 gil::static_transform(src, dst, [](std::uint8_t src_channel) {
58 return src_channel; // copy
60 BOOST_TEST(gil::at_c<0>(dst) == std::uint8_t{16});
61 BOOST_TEST(gil::at_c<1>(dst) == std::uint8_t{32});
62 BOOST_TEST(gil::at_c<2>(dst) == std::uint8_t{64});