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Fr4nz D13trich 2025-11-22 13:58:55 +01:00
parent 4af19165ec
commit 68073add76
12458 changed files with 12350765 additions and 2 deletions
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109
libs/geometry/geometry_tests/angle_test.cpp Normal file
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#include "geometry/geometry_tests/equality.hpp"
#include "base/macros.hpp"
#include "testing/testing.hpp"
#include "geometry/angles.hpp"
using namespace test;
using math::pi;
UNIT_TEST(Atan)
{
double const h4 = math::pi / 4.0;
TEST(is_equal_atan(1, 1, h4), ());
TEST(is_equal_atan(-1, 1, math::pi - h4), ());
TEST(is_equal_atan(-1, -1, h4 - math::pi), ());
TEST(is_equal_atan(1, -1, -h4), ());
double const hh = atan(1.0 / 2.0);
TEST(is_equal_atan(2, 1, hh), ());
TEST(is_equal_atan(-2, 1, math::pi - hh), ());
TEST(is_equal_atan(-2, -1, hh - math::pi), ());
TEST(is_equal_atan(2, -1, -hh), ());
}
UNIT_TEST(Atan2)
{
TEST_ALMOST_EQUAL_ULPS(atan2(1, 0), pi / 2.0, ());
TEST_ALMOST_EQUAL_ULPS(atan2(-1, 0), -pi / 2.0, ());
TEST_ALMOST_EQUAL_ULPS(atan2(0, 1), 0.0, ());
TEST_ALMOST_EQUAL_ULPS(atan2(0, -1), pi, ());
TEST_ALMOST_EQUAL_ULPS(atan2(1, 1), pi / 4.0, ());
}
namespace
{
void check_avg(double arr[], size_t n, double v)
{
ang::AverageCalc calc;
for (size_t i = 0; i < n; ++i)
calc.Add(arr[i]);
double const avg = calc.GetAverage();
TEST(is_equal_angle(avg, v), (avg, v));
}
} // namespace
UNIT_TEST(Average)
{
double constexpr eps = 1.0E-3;
double arr1[] = {math::pi - eps, -math::pi + eps};
TEST(is_equal_angle(ang::GetMiddleAngle(arr1[0], arr1[1]), math::pi), ());
check_avg(arr1, ARRAY_SIZE(arr1), math::pi);
double arr2[] = {eps, -eps};
TEST(is_equal_angle(ang::GetMiddleAngle(arr2[0], arr2[1]), 0.0), ());
check_avg(arr2, ARRAY_SIZE(arr2), 0.0);
}
UNIT_TEST(ShortestDistance)
{
TEST_ALMOST_EQUAL_ULPS(ang::GetShortestDistance(0, math::pi), math::pi, ());
TEST_ALMOST_EQUAL_ULPS(ang::GetShortestDistance(0, math::pi + 1), -math::pi + 1, ());
TEST_ALMOST_EQUAL_ULPS(ang::GetShortestDistance(math::pi - 1, 0), -math::pi + 1, ());
TEST_ALMOST_EQUAL_ULPS(ang::GetShortestDistance(math::pi + 1, 0), math::pi - 1, ());
}
UNIT_TEST(TwoVectorsAngle)
{
double constexpr eps = 1e-10;
TEST(AlmostEqualAbs(ang::TwoVectorsAngle(m2::Point<double>(0, 0) /* p */, m2::Point<double>(0, 1) /* p1 */,
m2::Point<double>(1, 0)) /* p2 */,
3 * math::pi2, eps),
());
TEST(AlmostEqualAbs(ang::TwoVectorsAngle(m2::Point<double>(1, 1) /* p */, m2::Point<double>(2, 2) /* p1 */,
m2::Point<double>(1, 2)) /* p2 */,
math::pi4, eps),
());
TEST(AlmostEqualAbs(ang::TwoVectorsAngle(m2::Point<double>(0, 0) /* p */, m2::Point<double>(1, 0) /* p1 */,
m2::Point<double>(0, -1)) /* p2 */,
3 * math::pi2, eps),
());
TEST(AlmostEqualAbs(ang::TwoVectorsAngle(m2::Point<double>(0, 0) /* p */, m2::Point<double>(1, 0) /* p1 */,
m2::Point<double>(-1, 0)) /* p2 */,
math::pi, eps),
());
}
UNIT_TEST(Azimuth)
{
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(-1, 0), m2::Point<double>(0, 1), math::pi2), -math::pi4), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(-1, 0), m2::Point<double>(0, 1), 0.0), math::pi4), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(-1, 1), m2::Point<double>(1, -1), 0.0), 3 * math::pi4), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(1, 1), m2::Point<double>(0, 1), -math::pi2), 0.0), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(1, -1), m2::Point<double>(-1, -1), math::pi), math::pi2), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(0, 0), m2::Point<double>(-1, -1), math::pi4), math::pi), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(0.5, -0.5), m2::Point<double>(-0.5, 0.5), math::pi4), -math::pi2),
());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(0.1, 0.1), m2::Point<double>(0.2, 0.2), math::pi4), 0.0), ());
TEST(is_equal_angle(ang::Azimuth(m2::Point<double>(0.7, 0.7), m2::Point<double>(-0.2, -0.2), math::pi2),
3 * math::pi4),
());
}