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//
// Copyright 2019-2020 Mateusz Loskot <mateusz at loskot dot net>
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
#include <boost/gil.hpp>
#include <boost/core/lightweight_test.hpp>
#include "test_utility_output_stream.hpp"
#include "core/image/test_fixture.hpp"
namespace gil = boost::gil;
namespace fixture = boost::gil::test::fixture;
struct test_subimage_equals_image
{
template <typename Image>
void operator()(Image const&)
{
using image_t = Image;
auto i0 = fixture::create_image<image_t>(4, 4, 128);
auto const v0 = gil::const_view(i0);
BOOST_TEST_EQ(v0.dimensions().x, 4);
BOOST_TEST_EQ(v0.dimensions().y, 4);
// request with 2 x point_t values
{
auto v1 = gil::subimage_view(gil::view(i0), {0, 0}, i0.dimensions());
BOOST_TEST_EQ(v0.dimensions(), v1.dimensions());
BOOST_TEST(gil::equal_pixels(v0, v1));
}
// request with 4 x dimension values
{
auto v1 = gil::subimage_view(gil::view(i0), 0, 0, i0.dimensions().x, i0.dimensions().y);
BOOST_TEST_EQ(v0.dimensions(), v1.dimensions());
BOOST_TEST(gil::equal_pixels(v0, v1));
}
}
static void run()
{
boost::mp11::mp_for_each<fixture::image_types>(test_subimage_equals_image{});
}
};
struct test_subimage_equals_image_quadrants
{
template <typename Image>
void operator()(Image const&)
{
using image_t = Image;
auto i0 = fixture::create_image<image_t>(4, 4, 0);
auto v0 = gil::view(i0);
// create test image and set values of pixels in:
// quadrant 1
auto const i1 = fixture::create_image<image_t>(2, 2, 255);
v0[2] = v0[3] = v0[6] = v0[7] = gil::const_view(i1)[0];
// quadrant 2
auto const i2 = fixture::create_image<image_t>(2, 2, 128);
v0[0] = v0[1] = v0[4] = v0[5] = gil::const_view(i2)[0];
// quadrant 3
auto const i3 = fixture::create_image<image_t>(2, 2, 64);
v0[8] = v0[9] = v0[12] = v0[13] = gil::const_view(i3)[0];
// quadrant 4
auto const i4 = fixture::create_image<image_t>(2, 2, 32);
v0[10] = v0[11] = v0[14] = v0[15] = gil::const_view(i4)[0];
auto v1 = gil::subimage_view(gil::view(i0), { 2, 0 }, i0.dimensions() / 2);
BOOST_TEST(gil::equal_pixels(v1, gil::const_view(i1)));
auto v2 = gil::subimage_view(gil::view(i0), { 0, 0 }, i0.dimensions() / 2);
BOOST_TEST(gil::equal_pixels(v2, gil::const_view(i2)));
auto v3 = gil::subimage_view(gil::view(i0), { 0, 2 }, i0.dimensions() / 2);
BOOST_TEST(gil::equal_pixels(v3, gil::const_view(i3)));
auto v4 = gil::subimage_view(gil::view(i0), { 2, 2 }, i0.dimensions() / 2);
BOOST_TEST(gil::equal_pixels(v4, gil::const_view(i4)));
}
static void run()
{
boost::mp11::mp_for_each<fixture::image_types>(test_subimage_equals_image_quadrants{});
}
};
int main()
{
test_subimage_equals_image::run();
test_subimage_equals_image_quadrants::run();
return ::boost::report_errors();
}
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