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* Implement coverage for Windows/Linux/MacOS (#126) * reverted --------- Co-authored-by: Saikari <lin@sz.cn.eu.org>
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297
tests/engines/unit_test_traits_engines.cpp
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297
tests/engines/unit_test_traits_engines.cpp
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// Tests for engine trait headers to improve header coverage
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#include <gtest/gtest.h>
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#include <omath/engines/frostbite_engine/traits/pred_engine_trait.hpp>
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#include <omath/engines/frostbite_engine/traits/mesh_trait.hpp>
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#include <omath/engines/frostbite_engine/traits/camera_trait.hpp>
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#include <omath/engines/iw_engine/traits/pred_engine_trait.hpp>
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#include <omath/engines/iw_engine/traits/mesh_trait.hpp>
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#include <omath/engines/iw_engine/traits/camera_trait.hpp>
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#include <omath/engines/opengl_engine/traits/pred_engine_trait.hpp>
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#include <omath/engines/opengl_engine/traits/mesh_trait.hpp>
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#include <omath/engines/opengl_engine/traits/camera_trait.hpp>
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#include <omath/engines/unity_engine/traits/pred_engine_trait.hpp>
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#include <omath/engines/unity_engine/traits/mesh_trait.hpp>
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#include <omath/engines/unity_engine/traits/camera_trait.hpp>
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#include <omath/engines/unreal_engine/traits/pred_engine_trait.hpp>
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#include <omath/engines/unreal_engine/traits/mesh_trait.hpp>
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#include <omath/engines/unreal_engine/traits/camera_trait.hpp>
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#include <omath/projectile_prediction/projectile.hpp>
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#include <omath/projectile_prediction/target.hpp>
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#include <optional>
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using namespace omath;
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// Small helper to compare matrices roughly (templated to avoid concrete typedef)
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template<typename MatT>
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static void expect_matrix_near(const MatT& a, const MatT& b, float eps = 1e-5f)
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{
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for (std::size_t r = 0; r < 4; ++r)
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for (std::size_t c = 0; c < 4; ++c)
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EXPECT_NEAR(a.at(r, c), b.at(r, c), eps);
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}
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// Generic tests for PredEngineTrait behaviour across engines
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TEST(TraitTests, Frostbite_Pred_And_Mesh_And_Camera)
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{
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namespace E = omath::frostbite_engine;
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projectile_prediction::Projectile p;
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p.m_origin = {0.f, 0.f, 0.f};
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p.m_launch_speed = 10.f;
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p.m_gravity_scale = 1.f;
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const auto pos = E::PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 9.81f);
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EXPECT_NEAR(pos.x, 0.f, 1e-4f);
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EXPECT_NEAR(pos.z, 10.f, 1e-4f);
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EXPECT_NEAR(pos.y, -9.81f * 0.5f, 1e-4f);
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projectile_prediction::Target t;
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t.m_origin = {0.f, 5.f, 0.f};
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t.m_velocity = {2.f, 0.f, 0.f};
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t.m_is_airborne = true;
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const auto pred = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred.x, 4.f, 1e-6f);
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EXPECT_NEAR(pred.y, 5.f - 9.81f * (2.f * 2.f) * 0.5f, 1e-6f);
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// Also test non-airborne path (no gravity applied)
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t.m_is_airborne = false;
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const auto pred_ground = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred_ground.x, 4.f, 1e-6f);
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EXPECT_NEAR(pred_ground.y, 5.f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::calc_vector_2d_distance({3.f, 0.f, 4.f}), 5.f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::get_vector_height_coordinate({1.f, 2.5f, 3.f}), 2.5f, 1e-6f);
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std::optional<float> pitch = 45.f;
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auto vp = E::PredEngineTrait::calc_viewpoint_from_angles(p, {10.f, 0.f, 0.f}, pitch);
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EXPECT_NEAR(vp.y, 0.f + 10.f * std::tan(angles::degrees_to_radians(45.f)), 1e-6f);
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// Direct angles
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Vector3<float> origin{0.f, 0.f, 0.f};
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Vector3<float> view_to{0.f, 1.f, 1.f};
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const auto pitch_calc = E::PredEngineTrait::calc_direct_pitch_angle(origin, view_to);
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const auto dir = (view_to - origin).normalized();
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EXPECT_NEAR(pitch_calc, angles::radians_to_degrees(std::asin(dir.y)), 1e-3f);
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const auto yaw_calc = E::PredEngineTrait::calc_direct_yaw_angle(origin, view_to);
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EXPECT_NEAR(yaw_calc, angles::radians_to_degrees(std::atan2(dir.x, dir.z)), 1e-3f);
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// MeshTrait simply forwards to rotation_matrix; ensure it compiles and returns something
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E::ViewAngles va;
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const auto m1 = E::MeshTrait::rotation_matrix(va);
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const auto m2 = E::rotation_matrix(va);
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expect_matrix_near(m1, m2);
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// CameraTrait look at should be callable
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const auto angles = E::CameraTrait::calc_look_at_angle({0, 0, 0}, {0, 1, 1});
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(void)angles;
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const auto proj = E::CameraTrait::calc_projection_matrix(projection::FieldOfView::from_degrees(60.f), {1280.f, 720.f}, 0.1f, 1000.f);
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const auto expected = E::calc_perspective_projection_matrix(60.f, 1280.f / 720.f, 0.1f, 1000.f);
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expect_matrix_near(proj, expected);
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}
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TEST(TraitTests, IW_Pred_And_Mesh_And_Camera)
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{
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namespace E = omath::iw_engine;
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projectile_prediction::Projectile p;
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p.m_origin = {0.f, 0.f, 0.f};
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p.m_launch_speed = 10.f;
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p.m_gravity_scale = 1.f;
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const auto pos = E::PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 9.81f);
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EXPECT_NEAR(pos.x, 10.f, 1e-4f);
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EXPECT_NEAR(pos.z, -9.81f * 0.5f, 1e-4f);
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projectile_prediction::Target t;
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t.m_origin = {0.f, 0.f, 5.f};
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t.m_velocity = {0.f, 0.f, 2.f};
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t.m_is_airborne = true;
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const auto pred = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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// predicted = origin + velocity * t -> z = 5 + 2*2 = 9; then gravity applied
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EXPECT_NEAR(pred.z, 9.f - 9.81f * (2.f * 2.f) * 0.5f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::calc_vector_2d_distance({3.f, 4.f, 0.f}), 5.f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::get_vector_height_coordinate({1.f, 2.5f, 3.f}), 3.f, 1e-6f);
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std::optional<float> pitch = 45.f;
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auto vp = E::PredEngineTrait::calc_viewpoint_from_angles(p, {10.f, 0.f, 0.f}, pitch);
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EXPECT_NEAR(vp.z, 0.f + 10.f * std::tan(angles::degrees_to_radians(45.f)), 1e-6f);
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Vector3<float> origin{0.f, 0.f, 0.f};
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Vector3<float> view_to{1.f, 1.f, 1.f};
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const auto pitch_calc = E::PredEngineTrait::calc_direct_pitch_angle(origin, view_to);
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const auto dist = origin.distance_to(view_to);
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EXPECT_NEAR(pitch_calc, angles::radians_to_degrees(std::asin((view_to.z - origin.z) / dist)), 1e-3f);
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const auto yaw_calc = E::PredEngineTrait::calc_direct_yaw_angle(origin, view_to);
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const auto delta = view_to - origin;
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EXPECT_NEAR(yaw_calc, angles::radians_to_degrees(std::atan2(delta.y, delta.x)), 1e-3f);
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E::ViewAngles va;
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expect_matrix_near(E::MeshTrait::rotation_matrix(va), E::rotation_matrix(va));
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const auto proj = E::CameraTrait::calc_projection_matrix(projection::FieldOfView::from_degrees(45.f), {1920.f, 1080.f}, 0.1f, 1000.f);
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const auto expected = E::calc_perspective_projection_matrix(45.f, 1920.f / 1080.f, 0.1f, 1000.f);
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expect_matrix_near(proj, expected);
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// non-airborne
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t.m_is_airborne = false;
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const auto pred_ground_iw = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred_ground_iw.z, 9.f, 1e-6f);
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}
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TEST(TraitTests, OpenGL_Pred_And_Mesh_And_Camera)
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{
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namespace E = omath::opengl_engine;
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projectile_prediction::Projectile p;
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p.m_origin = {0.f, 0.f, 0.f};
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p.m_launch_speed = 10.f;
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p.m_gravity_scale = 1.f;
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const auto pos = E::PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 9.81f);
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EXPECT_NEAR(pos.z, -10.f, 1e-4f);
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EXPECT_NEAR(pos.y, -9.81f * 0.5f, 1e-4f);
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projectile_prediction::Target t;
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t.m_origin = {0.f, 5.f, 0.f};
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t.m_velocity = {2.f, 0.f, 0.f};
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t.m_is_airborne = true;
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const auto pred = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred.x, 4.f, 1e-6f);
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EXPECT_NEAR(pred.y, 5.f - 9.81f * (2.f * 2.f) * 0.5f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::calc_vector_2d_distance({3.f, 0.f, 4.f}), 5.f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::get_vector_height_coordinate({1.f, 2.5f, 3.f}), 2.5f, 1e-6f);
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std::optional<float> pitch = 45.f;
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auto vp = E::PredEngineTrait::calc_viewpoint_from_angles(p, {10.f, 0.f, 0.f}, pitch);
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EXPECT_NEAR(vp.y, 0.f + 10.f * std::tan(angles::degrees_to_radians(45.f)), 1e-6f);
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Vector3<float> origin{0.f, 0.f, 0.f};
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Vector3<float> view_to{0.f, 1.f, 1.f};
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const auto pitch_calc = E::PredEngineTrait::calc_direct_pitch_angle(origin, view_to);
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const auto dir = (view_to - origin).normalized();
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EXPECT_NEAR(pitch_calc, angles::radians_to_degrees(std::asin(dir.y)), 1e-3f);
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const auto yaw_calc = E::PredEngineTrait::calc_direct_yaw_angle(origin, view_to);
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EXPECT_NEAR(yaw_calc, angles::radians_to_degrees(-std::atan2(dir.x, -dir.z)), 1e-3f);
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E::ViewAngles va;
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expect_matrix_near(E::MeshTrait::rotation_matrix(va), E::rotation_matrix(va));
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const auto proj = E::CameraTrait::calc_projection_matrix(projection::FieldOfView::from_degrees(60.f), {1280.f, 720.f}, 0.1f, 1000.f);
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const auto expected = E::calc_perspective_projection_matrix(60.f, 1280.f / 720.f, 0.1f, 1000.f);
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expect_matrix_near(proj, expected);
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// non-airborne
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t.m_is_airborne = false;
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const auto pred_ground_gl = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred_ground_gl.x, 4.f, 1e-6f);
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}
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TEST(TraitTests, Unity_Pred_And_Mesh_And_Camera)
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{
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namespace E = omath::unity_engine;
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projectile_prediction::Projectile p;
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p.m_origin = {0.f, 0.f, 0.f};
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p.m_launch_speed = 10.f;
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p.m_gravity_scale = 1.f;
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const auto pos = E::PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 9.81f);
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EXPECT_NEAR(pos.z, 10.f, 1e-4f);
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EXPECT_NEAR(pos.y, -9.81f * 0.5f, 1e-4f);
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projectile_prediction::Target t;
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t.m_origin = {0.f, 5.f, 0.f};
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t.m_velocity = {2.f, 0.f, 0.f};
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t.m_is_airborne = true;
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const auto pred = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred.x, 4.f, 1e-6f);
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EXPECT_NEAR(pred.y, 5.f - 9.81f * (2.f * 2.f) * 0.5f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::calc_vector_2d_distance({3.f, 0.f, 4.f}), 5.f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::get_vector_height_coordinate({1.f, 2.5f, 3.f}), 2.5f, 1e-6f);
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std::optional<float> pitch = 45.f;
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auto vp = E::PredEngineTrait::calc_viewpoint_from_angles(p, {10.f, 0.f, 0.f}, pitch);
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EXPECT_NEAR(vp.y, 0.f + 10.f * std::tan(angles::degrees_to_radians(45.f)), 1e-6f);
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Vector3<float> origin{0.f, 0.f, 0.f};
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Vector3<float> view_to{0.f, 1.f, 1.f};
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const auto pitch_calc = E::PredEngineTrait::calc_direct_pitch_angle(origin, view_to);
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const auto dir = (view_to - origin).normalized();
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EXPECT_NEAR(pitch_calc, angles::radians_to_degrees(std::asin(dir.y)), 1e-3f);
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const auto yaw_calc = E::PredEngineTrait::calc_direct_yaw_angle(origin, view_to);
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EXPECT_NEAR(yaw_calc, angles::radians_to_degrees(std::atan2(dir.x, dir.z)), 1e-3f);
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E::ViewAngles va;
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expect_matrix_near(E::MeshTrait::rotation_matrix(va), E::rotation_matrix(va));
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const auto proj = E::CameraTrait::calc_projection_matrix(projection::FieldOfView::from_degrees(60.f), {1280.f, 720.f}, 0.1f, 1000.f);
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const auto expected = E::calc_perspective_projection_matrix(60.f, 1280.f / 720.f, 0.1f, 1000.f);
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expect_matrix_near(proj, expected);
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// non-airborne
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t.m_is_airborne = false;
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const auto pred_ground_unity = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred_ground_unity.x, 4.f, 1e-6f);
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}
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TEST(TraitTests, Unreal_Pred_And_Mesh_And_Camera)
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{
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namespace E = omath::unreal_engine;
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projectile_prediction::Projectile p;
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p.m_origin = {0.f, 0.f, 0.f};
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p.m_launch_speed = 10.f;
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p.m_gravity_scale = 1.f;
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const auto pos = E::PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 9.81f);
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EXPECT_NEAR(pos.x, 10.f, 1e-4f);
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EXPECT_NEAR(pos.y, -9.81f * 0.5f, 1e-4f);
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projectile_prediction::Target t;
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t.m_origin = {0.f, 5.f, 0.f};
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t.m_velocity = {2.f, 0.f, 0.f};
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t.m_is_airborne = true;
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const auto pred = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred.x, 4.f, 1e-6f);
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EXPECT_NEAR(pred.y, 5.f - 9.81f * (2.f * 2.f) * 0.5f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::calc_vector_2d_distance({3.f, 0.f, 4.f}), 5.f, 1e-6f);
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EXPECT_NEAR(E::PredEngineTrait::get_vector_height_coordinate({1.f, 2.5f, 3.f}), 2.5f, 1e-6f);
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std::optional<float> pitch = 45.f;
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auto vp = E::PredEngineTrait::calc_viewpoint_from_angles(p, {10.f, 0.f, 0.f}, pitch);
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EXPECT_NEAR(vp.z, 0.f + 10.f * std::tan(angles::degrees_to_radians(45.f)), 1e-6f);
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Vector3<float> origin{0.f, 0.f, 0.f};
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Vector3<float> view_to{1.f, 1.f, 1.f};
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const auto pitch_calc = E::PredEngineTrait::calc_direct_pitch_angle(origin, view_to);
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const auto dir = (view_to - origin).normalized();
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EXPECT_NEAR(pitch_calc, angles::radians_to_degrees(std::asin(dir.z)), 1e-3f);
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const auto yaw_calc = E::PredEngineTrait::calc_direct_yaw_angle(origin, view_to);
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EXPECT_NEAR(yaw_calc, angles::radians_to_degrees(std::atan2(dir.y, dir.x)), 1e-3f);
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E::ViewAngles va;
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expect_matrix_near(E::MeshTrait::rotation_matrix(va), E::rotation_matrix(va));
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const auto proj = E::CameraTrait::calc_projection_matrix(projection::FieldOfView::from_degrees(60.f), {1280.f, 720.f}, 0.1f, 1000.f);
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const auto expected = E::calc_perspective_projection_matrix(60.f, 1280.f / 720.f, 0.1f, 1000.f);
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expect_matrix_near(proj, expected);
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// non-airborne
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t.m_is_airborne = false;
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const auto pred_ground_unreal = E::PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred_ground_unreal.x, 4.f, 1e-6f);
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}
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