1 // 2 // Copyright 2013 Christian Henning 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/toolbox/metafunctions/channel_view.hpp> 10 11 #include <boost/core/lightweight_test.hpp> 12 13 #include <type_traits> 14 15 namespace gil = boost::gil; 16 test_channel_view()17void test_channel_view() 18 { 19 using kth_channel_view_t 20 = gil::kth_channel_view_type<0, gil::rgb8_view_t::const_t>::type; 21 using channel_view_t 22 = gil::channel_view_type<gil::red_t, gil::rgb8_view_t::const_t>::type; 23 24 static_assert(std::is_same 25 < 26 kth_channel_view_t, 27 channel_view_t 28 >::value, 29 ""); 30 31 gil::rgb8_image_t img(100, 100); 32 kth_channel_view_t const kth0 = gil::kth_channel_view<0>(gil::const_view(img)); 33 BOOST_TEST_EQ(kth0.num_channels(), 1u); 34 35 channel_view_t const red = gil::channel_view<gil::red_t>(gil::const_view(img)); 36 BOOST_TEST_EQ(red.num_channels(), 1u); 37 } 38 main()39int main() 40 { 41 test_channel_view(); 42 43 return boost::report_errors(); 44 } 45