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340 lines
12 KiB
C++
340 lines
12 KiB
C++
//
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// Created by Orange on 11/23/2024.
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//
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#include <gtest/gtest.h>
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#include <omath/engines/opengl_engine/camera.hpp>
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#include <omath/engines/opengl_engine/constants.hpp>
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#include <omath/engines/opengl_engine/formulas.hpp>
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#include <random>
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TEST(unit_test_opengl, UnitsToCentimeters_BasicValues)
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{
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EXPECT_FLOAT_EQ(omath::opengl_engine::units_to_centimeters(0.0f), 0.0f);
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EXPECT_FLOAT_EQ(omath::opengl_engine::units_to_centimeters(1.0f), 0.01f);
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EXPECT_FLOAT_EQ(omath::opengl_engine::units_to_centimeters(100.0f), 1.0f);
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EXPECT_FLOAT_EQ(omath::opengl_engine::units_to_centimeters(-250.0f), -2.5f);
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}
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TEST(unit_test_opengl, UnitsToMeters_BasicValues)
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{
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EXPECT_DOUBLE_EQ(omath::opengl_engine::units_to_meters(0.0), 0.0);
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EXPECT_DOUBLE_EQ(omath::opengl_engine::units_to_meters(1.0), 1.0);
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EXPECT_DOUBLE_EQ(omath::opengl_engine::units_to_meters(123.456), 123.456);
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EXPECT_DOUBLE_EQ(omath::opengl_engine::units_to_meters(-42.0), -42.0);
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}
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TEST(unit_test_opengl, UnitsToKilometers_BasicValues)
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{
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EXPECT_NEAR(omath::opengl_engine::units_to_kilometers(0.0), 0.0, 1e-15);
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EXPECT_NEAR(omath::opengl_engine::units_to_kilometers(1.0), 0.001, 1e-15);
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EXPECT_NEAR(omath::opengl_engine::units_to_kilometers(1000.0), 1.0, 1e-12);
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EXPECT_NEAR(omath::opengl_engine::units_to_kilometers(-2500.0), -2.5, 1e-12);
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}
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TEST(unit_test_opengl, CentimetersToUnits_BasicValues)
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{
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EXPECT_FLOAT_EQ(omath::opengl_engine::centimeters_to_units(0.0f), 0.0f);
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EXPECT_FLOAT_EQ(omath::opengl_engine::centimeters_to_units(0.01f), 1.0f);
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EXPECT_FLOAT_EQ(omath::opengl_engine::centimeters_to_units(1.0f), 100.0f);
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EXPECT_FLOAT_EQ(omath::opengl_engine::centimeters_to_units(-2.5f), -250.0f);
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}
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TEST(unit_test_opengl, MetersToUnits_BasicValues)
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{
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EXPECT_DOUBLE_EQ(omath::opengl_engine::meters_to_units(0.0), 0.0);
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EXPECT_DOUBLE_EQ(omath::opengl_engine::meters_to_units(1.0), 1.0);
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EXPECT_DOUBLE_EQ(omath::opengl_engine::meters_to_units(123.456), 123.456);
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EXPECT_DOUBLE_EQ(omath::opengl_engine::meters_to_units(-42.0), -42.0);
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}
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TEST(unit_test_opengl, KilometersToUnits_BasicValues)
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{
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EXPECT_NEAR(omath::opengl_engine::kilometers_to_units(0.0), 0.0, 1e-12);
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EXPECT_NEAR(omath::opengl_engine::kilometers_to_units(0.001), 1.0, 1e-12);
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EXPECT_NEAR(omath::opengl_engine::kilometers_to_units(1.0), 1000.0, 1e-9);
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EXPECT_NEAR(omath::opengl_engine::kilometers_to_units(-2.5), -2500.0, 1e-9);
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}
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TEST(unit_test_opengl, RoundTrip_UnitsCentimeters)
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{
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constexpr float units_f = 12345.678f;
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const auto cm_f = omath::opengl_engine::units_to_centimeters(units_f);
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const auto units_f_back = omath::opengl_engine::centimeters_to_units(cm_f);
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EXPECT_NEAR(units_f_back, units_f, 1e-3f);
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constexpr double units_d = -987654.321;
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const auto cm_d = omath::opengl_engine::units_to_centimeters(units_d);
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const auto units_d_back = omath::opengl_engine::centimeters_to_units(cm_d);
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EXPECT_NEAR(units_d_back, units_d, 1e-9);
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}
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TEST(unit_test_opengl, RoundTrip_UnitsMeters)
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{
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constexpr float units_f = 5432.125f;
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const auto m_f = omath::opengl_engine::units_to_meters(units_f);
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const auto units_f_back = omath::opengl_engine::meters_to_units(m_f);
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EXPECT_FLOAT_EQ(units_f_back, units_f);
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constexpr double units_d = -123456.789;
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const auto m_d = omath::opengl_engine::units_to_meters(units_d);
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const auto units_d_back = omath::opengl_engine::meters_to_units(m_d);
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EXPECT_DOUBLE_EQ(units_d_back, units_d);
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}
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TEST(unit_test_opengl, RoundTrip_UnitsKilometers)
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{
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constexpr float units_f = 100000.0f;
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const auto km_f = omath::opengl_engine::units_to_kilometers(units_f);
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const auto units_f_back = omath::opengl_engine::kilometers_to_units(km_f);
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EXPECT_NEAR(units_f_back, units_f, 1e-2f);
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constexpr double units_d = -7654321.123;
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const auto km_d = omath::opengl_engine::units_to_kilometers(units_d);
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const auto units_d_back = omath::opengl_engine::kilometers_to_units(km_d);
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EXPECT_NEAR(units_d_back, units_d, 1e-6);
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}
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TEST(unit_test_opengl, ConversionChainConsistency)
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{
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const double units = 424242.42;
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const auto cm_direct = omath::opengl_engine::units_to_centimeters(units);
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const auto cm_via_units = units / 100.0;
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EXPECT_NEAR(cm_direct, cm_via_units, 1e-12);
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const auto km_direct = omath::opengl_engine::units_to_kilometers(units);
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const auto km_via_meters = omath::opengl_engine::units_to_meters(units) / 1000.0;
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EXPECT_NEAR(km_direct, km_via_meters, 1e-12);
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}
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TEST(unit_test_opengl, SupportsFloatAndDouble)
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{
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static_assert(std::is_same_v<decltype(omath::opengl_engine::units_to_centimeters(1.0f)), float>);
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static_assert(std::is_same_v<decltype(omath::opengl_engine::units_to_centimeters(1.0)), double>);
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static_assert(std::is_same_v<decltype(omath::opengl_engine::meters_to_units(1.0f)), float>);
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static_assert(std::is_same_v<decltype(omath::opengl_engine::kilometers_to_units(1.0)), double>);
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}
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TEST(unit_test_opengl, ConstexprConversions)
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{
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constexpr double units = 1000.0;
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constexpr double cm = omath::opengl_engine::units_to_centimeters(units);
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constexpr double m = omath::opengl_engine::units_to_meters(units);
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constexpr double km = omath::opengl_engine::units_to_kilometers(units);
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static_assert(cm == 10.0, "units_to_centimeters constexpr failed");
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static_assert(m == 1000.0, "units_to_meters constexpr failed");
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static_assert(km == 1.0, "units_to_kilometers constexpr failed");
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}
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TEST(unit_test_opengl, ForwardVector)
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{
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const auto forward = omath::opengl_engine::forward_vector({});
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EXPECT_EQ(forward, omath::opengl_engine::k_abs_forward);
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}
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TEST(unit_test_opengl, RightVector)
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{
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const auto right = omath::opengl_engine::right_vector({});
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EXPECT_EQ(right, omath::opengl_engine::k_abs_right);
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}
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TEST(unit_test_opengl, UpVector)
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{
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const auto up = omath::opengl_engine::up_vector({});
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EXPECT_EQ(up, omath::opengl_engine::k_abs_up);
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}
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TEST(unit_test_opengl, ForwardVectorRotationYaw)
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{
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omath::opengl_engine::ViewAngles angles;
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angles.yaw = omath::opengl_engine::YawAngle::from_degrees(-90.f);
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const auto forward = omath::opengl_engine::forward_vector(angles);
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EXPECT_NEAR(forward.x, omath::opengl_engine::k_abs_right.x, 0.00001f);
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EXPECT_NEAR(forward.y, omath::opengl_engine::k_abs_right.y, 0.00001f);
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EXPECT_NEAR(forward.z, omath::opengl_engine::k_abs_right.z, 0.00001f);
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}
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TEST(unit_test_opengl, ForwardVectorRotationPitch)
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{
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omath::opengl_engine::ViewAngles angles;
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angles.pitch = omath::opengl_engine::PitchAngle::from_degrees(90.f);
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const auto forward = omath::opengl_engine::forward_vector(angles);
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EXPECT_NEAR(forward.x, omath::opengl_engine::k_abs_up.x, 0.00001f);
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EXPECT_NEAR(forward.y, omath::opengl_engine::k_abs_up.y, 0.00001f);
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EXPECT_NEAR(forward.z, omath::opengl_engine::k_abs_up.z, 0.00001f);
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}
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TEST(unit_test_opengl, ForwardVectorRotationRoll)
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{
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omath::opengl_engine::ViewAngles angles;
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angles.roll = omath::opengl_engine::RollAngle::from_degrees(-90.f);
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const auto forward = omath::opengl_engine::up_vector(angles);
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EXPECT_NEAR(forward.x, omath::opengl_engine::k_abs_right.x, 0.00001f);
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EXPECT_NEAR(forward.y, omath::opengl_engine::k_abs_right.y, 0.00001f);
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EXPECT_NEAR(forward.z, omath::opengl_engine::k_abs_right.z, 0.00001f);
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}
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TEST(unit_test_opengl, ProjectTargetMovedFromCamera)
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{
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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const auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
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for (float distance = -10.f; distance > -1000.f; distance -= 0.01f)
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{
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const auto projected = cam.world_to_screen({0, 0, distance});
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EXPECT_TRUE(projected.has_value());
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if (!projected.has_value())
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continue;
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EXPECT_NEAR(projected->x, 960, 0.00001f);
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EXPECT_NEAR(projected->y, 540, 0.00001f);
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}
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}
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TEST(unit_test_opengl, CameraSetAndGetFov)
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{
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
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EXPECT_EQ(cam.get_field_of_view().as_degrees(), 90.f);
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cam.set_field_of_view(omath::projection::FieldOfView::from_degrees(50.f));
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EXPECT_EQ(cam.get_field_of_view().as_degrees(), 50.f);
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}
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TEST(unit_test_opengl, CameraSetAndGetOrigin)
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{
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auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, {}, 0.01f, 1000.f);
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EXPECT_EQ(cam.get_origin(), omath::Vector3<float>{});
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cam.set_field_of_view(omath::projection::FieldOfView::from_degrees(50.f));
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EXPECT_EQ(cam.get_field_of_view().as_degrees(), 50.f);
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}
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TEST(unit_test_opengl_engine, loook_at_random_all_axis)
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{
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std::mt19937 gen(std::random_device{}()); // Seed with a non-deterministic source
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std::uniform_real_distribution<float> dist(-1000.f, 1000.f);
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.001f, 10000.f);
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std::size_t failed_points = 0;
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for (int i = 0; i < 1000; i++)
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{
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const auto position_to_look = omath::Vector3<float>{dist(gen), dist(gen), dist(gen)};
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if (cam.get_origin().distance_to(position_to_look) < 10)
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continue;
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cam.look_at(position_to_look);
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auto projected_pos = cam.world_to_view_port(position_to_look);
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EXPECT_TRUE(projected_pos.has_value());
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if (!projected_pos)
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continue;
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if (std::abs(projected_pos->x - 0.f) >= 0.0001f || std::abs(projected_pos->y - 0.f) >= 0.0001f)
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failed_points++;
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}
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EXPECT_LE(failed_points, 100);
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}
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TEST(unit_test_opengl_engine, loook_at_random_x_axis)
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{
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std::mt19937 gen(std::random_device{}()); // Seed with a non-deterministic source
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std::uniform_real_distribution<float> dist(-1000.f, 1000.f);
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.001f, 10000.f);
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std::size_t failed_points = 0;
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for (int i = 0; i < 1000; i++)
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{
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const auto position_to_look = omath::Vector3<float>{dist(gen), 0.f, 0.f};
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if (cam.get_origin().distance_to(position_to_look) < 10)
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continue;
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cam.look_at(position_to_look);
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auto projected_pos = cam.world_to_view_port(position_to_look);
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EXPECT_TRUE(projected_pos.has_value());
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if (!projected_pos)
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continue;
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if (std::abs(projected_pos->x - 0.f) >= 0.01f || std::abs(projected_pos->y - 0.f) >= 0.01f)
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failed_points++;
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}
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EXPECT_LE(failed_points, 100);
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}
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TEST(unit_test_opengl_engine, loook_at_random_y_axis)
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{
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std::mt19937 gen(std::random_device{}()); // Seed with a non-deterministic source
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std::uniform_real_distribution<float> dist(-1000.f, 1000.f);
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.001f, 10000.f);
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std::size_t failed_points = 0;
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for (int i = 0; i < 1000; i++)
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{
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const auto position_to_look = omath::Vector3<float>{0.f, dist(gen), 0.f};
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if (cam.get_origin().distance_to(position_to_look) < 10)
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continue;
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cam.look_at(position_to_look);
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auto projected_pos = cam.world_to_view_port(position_to_look);
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EXPECT_TRUE(projected_pos.has_value());
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if (!projected_pos)
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continue;
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if (std::abs(projected_pos->x - 0.f) >= 0.01f || std::abs(projected_pos->y - 0.f) >= 0.01f)
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failed_points++;
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}
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EXPECT_LE(failed_points, 100);
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}
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TEST(unit_test_opengl_engine, loook_at_random_z_axis)
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{
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std::mt19937 gen(std::random_device{}()); // Seed with a non-deterministic source
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std::uniform_real_distribution<float> dist(-1000.f, 1000.f);
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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auto cam = omath::opengl_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.001f, 10000.f);
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std::size_t failed_points = 0;
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for (int i = 0; i < 1000; i++)
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{
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const auto position_to_look = omath::Vector3<float>{0.f, 0.f, dist(gen)};
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if (cam.get_origin().distance_to(position_to_look) < 10)
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continue;
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cam.look_at(position_to_look);
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auto projected_pos = cam.world_to_view_port(position_to_look);
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EXPECT_TRUE(projected_pos.has_value());
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if (!projected_pos)
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continue;
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if (std::abs(projected_pos->x - 0.f) >= 0.01f || std::abs(projected_pos->y - 0.f) >= 0.01f)
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failed_points++;
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}
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EXPECT_LE(failed_points, 100);
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} |