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#include <boost/test/unit_test.hpp>
#include <aocommon/imagecoordinates.h>
#include <cmath>
using aocommon::ImageCoordinates;
BOOST_AUTO_TEST_SUITE(image_coordinates)
BOOST_AUTO_TEST_CASE(mean_position) {
std::pair<double, double> result =
ImageCoordinates::MeanPosition(std::vector<std::pair<double, double>>{});
BOOST_CHECK_EQUAL(result.first, 0.0);
BOOST_CHECK_EQUAL(result.second, 0.0);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{0.0, 0.0}});
BOOST_CHECK_LT(std::abs(result.first), 1e-6);
BOOST_CHECK_LT(std::abs(result.second), 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{1.0, 0.0}});
BOOST_CHECK_CLOSE_FRACTION(result.first, 1.0, 1e-6);
BOOST_CHECK_LT(std::abs(result.second), 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{1.0, 1.0}});
BOOST_CHECK_CLOSE_FRACTION(result.first, 1.0, 1e-6);
BOOST_CHECK_CLOSE_FRACTION(result.second, 1.0, 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{-1.0, 0.0}});
BOOST_CHECK_CLOSE_FRACTION(result.first, -1.0, 1e-6);
BOOST_CHECK_LT(std::abs(result.second), 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{-1.0, -1.0}});
BOOST_CHECK_CLOSE_FRACTION(result.first, -1.0, 1e-6);
BOOST_CHECK_CLOSE_FRACTION(result.second, -1.0, 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{0.0, M_PI * 0.5}});
BOOST_CHECK_LT(std::abs(result.first), 1e-6);
BOOST_CHECK_CLOSE_FRACTION(result.second, M_PI * 0.5, 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{0.0, 0.0}, {0.0, 0.0}});
BOOST_CHECK_LT(std::abs(result.first), 1e-6);
BOOST_CHECK_LT(std::abs(result.second), 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{1.0, 1.0}, {1.0, 1.0}});
BOOST_CHECK_CLOSE_FRACTION(result.first, 1.0, 1e-6);
BOOST_CHECK_CLOSE_FRACTION(result.second, 1.0, 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{0.0, 0.0}, {0.0, -0.5 * M_PI}});
BOOST_CHECK_LT(std::abs(result.first), 1e-6);
BOOST_CHECK_CLOSE_FRACTION(result.second, -0.25 * M_PI, 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{0.0, 0.0},
{0.0, -0.25 * M_PI},
{0.0, 0.25 * M_PI},
{0.0, 0.0},
{0.0, -0.25 * M_PI},
{0.0, 0.25 * M_PI}});
BOOST_CHECK_LT(std::abs(result.first), 1e-6);
BOOST_CHECK_LT(std::abs(result.second), 1e-6);
result = ImageCoordinates::MeanPosition(
std::vector<std::pair<double, double>>{{0.0, 0.0}});
BOOST_CHECK_LT(std::abs(result.first), 1e-6);
BOOST_CHECK_LT(std::abs(result.second), 1e-6);
// Positions around the pole
std::vector<std::pair<float, float>> around_pole;
for (size_t i = 0; i != 20; ++i) {
around_pole.emplace_back(2.0 * M_PI * i / 20.0 + 0.03, 0.5 * M_PI - 0.07);
}
// Here we also test the span overload
result = ImageCoordinates::MeanPosition(std::span(around_pole));
BOOST_CHECK(std::isfinite(result.first));
BOOST_CHECK_CLOSE_FRACTION(result.second, 0.5 * M_PI, 1e-6);
const std::vector<std::pair<double, double>> origin_test{{1.0, -0.5 * M_PI},
{0.0, 0.5 * M_PI}};
BOOST_CHECK_NO_THROW(ImageCoordinates::MeanPosition(std::span(origin_test)));
std::array<float, 2> array_result = ImageCoordinates::MeanPosition(
std::vector<std::array<float, 2>>{{1.0, 1.0}, {1.0, 1.0}});
BOOST_CHECK_CLOSE_FRACTION(array_result[0], 1.0, 1e-6);
BOOST_CHECK_CLOSE_FRACTION(array_result[1], 1.0, 1e-6);
}
BOOST_AUTO_TEST_SUITE_END()
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