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added more tests
This commit is contained in:
275
tests/general/unit_test_cry_pred_engine_trait.cpp
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275
tests/general/unit_test_cry_pred_engine_trait.cpp
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//
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// Created by Vladislav on 20.04.2026.
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//
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#include <gtest/gtest.h>
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#include <omath/engines/cry_engine/traits/pred_engine_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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using namespace omath;
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using namespace omath::cry_engine;
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// ---- predict_projectile_position ----
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TEST(CryPredEngineTrait, PredictProjectilePositionAtTimeZero)
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{
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projectile_prediction::Projectile p;
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p.m_origin = {1.f, 2.f, 3.f};
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p.m_launch_offset = {4.f, 5.f, 6.f};
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p.m_launch_speed = 100.f;
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p.m_gravity_scale = 1.f;
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const auto pos = PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 0.f, 9.81f);
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// At t=0 no velocity is applied, just origin+offset
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EXPECT_NEAR(pos.x, 5.f, 1e-4f);
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EXPECT_NEAR(pos.y, 7.f, 1e-4f);
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EXPECT_NEAR(pos.z, 9.f, 1e-4f);
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}
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TEST(CryPredEngineTrait, PredictProjectilePositionZeroAnglesForwardIsY)
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{
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// Cry engine forward = +Y. At pitch=0, yaw=0 the projectile travels along +Y.
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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 = 0.f; // no gravity so we isolate direction
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const auto pos = 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.y, 10.f, 1e-4f);
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EXPECT_NEAR(pos.z, 0.f, 1e-4f);
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}
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TEST(CryPredEngineTrait, PredictProjectilePositionGravityDropsZ)
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{
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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 = PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 2.f, 9.81f);
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// z = 0 - (9.81 * 1) * (4) * 0.5 = -19.62
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EXPECT_NEAR(pos.z, -9.81f * 4.f * 0.5f, 1e-3f);
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}
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TEST(CryPredEngineTrait, PredictProjectilePositionGravityScaleZeroNoZDrop)
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{
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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 = 0.f;
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const auto pos = PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 3.f, 9.81f);
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EXPECT_NEAR(pos.z, 0.f, 1e-4f);
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}
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TEST(CryPredEngineTrait, PredictProjectilePositionWithLaunchOffset)
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{
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projectile_prediction::Projectile p;
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p.m_origin = {5.f, 0.f, 0.f};
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p.m_launch_offset = {0.f, 0.f, 2.f};
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p.m_launch_speed = 10.f;
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p.m_gravity_scale = 0.f;
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const auto pos = PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 0.f);
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// launch position = {5, 0, 2}, travels along +Y by 10
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EXPECT_NEAR(pos.x, 5.f, 1e-4f);
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EXPECT_NEAR(pos.y, 10.f, 1e-4f);
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EXPECT_NEAR(pos.z, 2.f, 1e-4f);
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}
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// ---- predict_target_position ----
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TEST(CryPredEngineTrait, PredictTargetPositionGroundedStationary)
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{
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projectile_prediction::Target t;
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t.m_origin = {10.f, 20.f, 5.f};
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t.m_velocity = {0.f, 0.f, 0.f};
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t.m_is_airborne = false;
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const auto pred = PredEngineTrait::predict_target_position(t, 5.f, 9.81f);
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EXPECT_NEAR(pred.x, 10.f, 1e-6f);
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EXPECT_NEAR(pred.y, 20.f, 1e-6f);
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EXPECT_NEAR(pred.z, 5.f, 1e-6f);
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}
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TEST(CryPredEngineTrait, PredictTargetPositionGroundedMoving)
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{
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projectile_prediction::Target t;
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t.m_origin = {0.f, 0.f, 0.f};
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t.m_velocity = {3.f, 4.f, 0.f};
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t.m_is_airborne = false;
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const auto pred = PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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EXPECT_NEAR(pred.x, 6.f, 1e-6f);
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EXPECT_NEAR(pred.y, 8.f, 1e-6f);
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EXPECT_NEAR(pred.z, 0.f, 1e-6f); // grounded — no gravity
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}
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TEST(CryPredEngineTrait, PredictTargetPositionAirborneGravityDropsZ)
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{
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projectile_prediction::Target t;
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t.m_origin = {0.f, 0.f, 20.f};
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t.m_velocity = {0.f, 0.f, 0.f};
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t.m_is_airborne = true;
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const auto pred = PredEngineTrait::predict_target_position(t, 2.f, 9.81f);
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// z = 20 - 9.81 * 4 * 0.5 = 20 - 19.62 = 0.38
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EXPECT_NEAR(pred.z, 20.f - 9.81f * 4.f * 0.5f, 1e-4f);
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}
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TEST(CryPredEngineTrait, PredictTargetPositionAirborneMovingWithGravity)
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{
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projectile_prediction::Target t;
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t.m_origin = {0.f, 0.f, 50.f};
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t.m_velocity = {10.f, 5.f, 0.f};
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t.m_is_airborne = true;
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const auto pred = PredEngineTrait::predict_target_position(t, 3.f, 9.81f);
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EXPECT_NEAR(pred.x, 30.f, 1e-4f);
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EXPECT_NEAR(pred.y, 15.f, 1e-4f);
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EXPECT_NEAR(pred.z, 50.f - 9.81f * 9.f * 0.5f, 1e-4f);
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}
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// ---- calc_vector_2d_distance ----
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TEST(CryPredEngineTrait, CalcVector2dDistance_3_4_5)
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{
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EXPECT_NEAR(PredEngineTrait::calc_vector_2d_distance({3.f, 4.f, 999.f}), 5.f, 1e-5f);
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}
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TEST(CryPredEngineTrait, CalcVector2dDistance_ZeroVector)
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{
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EXPECT_NEAR(PredEngineTrait::calc_vector_2d_distance({0.f, 0.f, 0.f}), 0.f, 1e-6f);
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}
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TEST(CryPredEngineTrait, CalcVector2dDistance_ZIgnored)
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{
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// Z does not affect the 2D distance
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EXPECT_NEAR(PredEngineTrait::calc_vector_2d_distance({0.f, 5.f, 100.f}),
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PredEngineTrait::calc_vector_2d_distance({0.f, 5.f, 0.f}), 1e-6f);
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}
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// ---- get_vector_height_coordinate ----
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TEST(CryPredEngineTrait, GetVectorHeightCoordinate_ReturnsZ)
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{
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// Cry engine up = +Z
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EXPECT_FLOAT_EQ(PredEngineTrait::get_vector_height_coordinate({1.f, 2.f, 7.f}), 7.f);
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}
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// ---- calc_direct_pitch_angle ----
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TEST(CryPredEngineTrait, CalcDirectPitchAngle_Flat)
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{
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// Target at same height → pitch = 0
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EXPECT_NEAR(PredEngineTrait::calc_direct_pitch_angle({0.f, 0.f, 0.f}, {0.f, 100.f, 0.f}), 0.f, 1e-4f);
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}
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TEST(CryPredEngineTrait, CalcDirectPitchAngle_LookingUp)
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{
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// Target at 45° above (equal XY distance and Z height)
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// direction to {0, 1, 1} normalized = {0, 0.707, 0.707}, asin(0.707) = 45°
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EXPECT_NEAR(PredEngineTrait::calc_direct_pitch_angle({0.f, 0.f, 0.f}, {0.f, 1.f, 1.f}), 45.f, 1e-3f);
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}
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TEST(CryPredEngineTrait, CalcDirectPitchAngle_LookingDown)
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{
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// Target directly below
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EXPECT_NEAR(PredEngineTrait::calc_direct_pitch_angle({0.f, 0.f, 10.f}, {0.f, 0.f, 0.f}), -90.f, 1e-3f);
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}
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TEST(CryPredEngineTrait, CalcDirectPitchAngle_LookingDirectlyUp)
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{
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EXPECT_NEAR(PredEngineTrait::calc_direct_pitch_angle({0.f, 0.f, 0.f}, {0.f, 0.f, 100.f}), 90.f, 1e-3f);
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}
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// ---- calc_direct_yaw_angle ----
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TEST(CryPredEngineTrait, CalcDirectYawAngle_ForwardAlongY)
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{
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// Cry engine forward = +Y → yaw = 0
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EXPECT_NEAR(PredEngineTrait::calc_direct_yaw_angle({0.f, 0.f, 0.f}, {0.f, 100.f, 0.f}), 0.f, 1e-4f);
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}
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TEST(CryPredEngineTrait, CalcDirectYawAngle_AlongPositiveX)
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{
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// direction = {1, 0, 0}, yaw = -atan2(1, 0) = -90°
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EXPECT_NEAR(PredEngineTrait::calc_direct_yaw_angle({0.f, 0.f, 0.f}, {100.f, 0.f, 0.f}), -90.f, 1e-3f);
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}
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TEST(CryPredEngineTrait, CalcDirectYawAngle_AlongNegativeX)
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{
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// direction = {-1, 0, 0}, yaw = -atan2(-1, 0) = 90°
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EXPECT_NEAR(PredEngineTrait::calc_direct_yaw_angle({0.f, 0.f, 0.f}, {-100.f, 0.f, 0.f}), 90.f, 1e-3f);
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}
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TEST(CryPredEngineTrait, CalcDirectYawAngle_BackwardAlongNegY)
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{
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// direction = {0, -1, 0}, yaw = -atan2(0, -1) = ±180°
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const float yaw = PredEngineTrait::calc_direct_yaw_angle({0.f, 0.f, 0.f}, {0.f, -100.f, 0.f});
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EXPECT_NEAR(std::abs(yaw), 180.f, 1e-3f);
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}
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TEST(CryPredEngineTrait, CalcDirectYawAngle_OffOriginCamera)
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{
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// Same relative direction regardless of camera position
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const float yaw_a = PredEngineTrait::calc_direct_yaw_angle({0.f, 0.f, 0.f}, {0.f, 100.f, 0.f});
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const float yaw_b = PredEngineTrait::calc_direct_yaw_angle({50.f, 50.f, 0.f}, {50.f, 150.f, 0.f});
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EXPECT_NEAR(yaw_a, yaw_b, 1e-4f);
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}
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// ---- calc_viewpoint_from_angles ----
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TEST(CryPredEngineTrait, CalcViewpointFromAngles_45Degrees)
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{
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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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// Target along +Y at distance 10; pitch=45° → height = 10 * tan(45°) = 10
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const Vector3<float> target{0.f, 10.f, 0.f};
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const auto vp = PredEngineTrait::calc_viewpoint_from_angles(p, target, 45.f);
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EXPECT_NEAR(vp.x, 0.f, 1e-4f);
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EXPECT_NEAR(vp.y, 10.f, 1e-4f);
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EXPECT_NEAR(vp.z, 10.f, 1e-3f);
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}
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TEST(CryPredEngineTrait, CalcViewpointFromAngles_ZeroPitch)
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{
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projectile_prediction::Projectile p;
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p.m_origin = {0.f, 0.f, 5.f};
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p.m_launch_speed = 1.f;
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const Vector3<float> target{3.f, 4.f, 0.f};
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const auto vp = PredEngineTrait::calc_viewpoint_from_angles(p, target, 0.f);
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// tan(0) = 0 → viewpoint Z = origin.z + 0 = 5
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EXPECT_NEAR(vp.x, 3.f, 1e-4f);
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EXPECT_NEAR(vp.y, 4.f, 1e-4f);
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EXPECT_NEAR(vp.z, 5.f, 1e-4f);
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}
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TEST(CryPredEngineTrait, CalcViewpointXYMatchesPredictedTargetXY)
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{
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projectile_prediction::Projectile p;
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p.m_origin = {1.f, 2.f, 3.f};
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p.m_launch_speed = 50.f;
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const Vector3<float> target{10.f, 20.f, 5.f};
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const auto vp = PredEngineTrait::calc_viewpoint_from_angles(p, target, 30.f);
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// X and Y always match the predicted target position
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EXPECT_NEAR(vp.x, target.x, 1e-4f);
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EXPECT_NEAR(vp.y, target.y, 1e-4f);
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}
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@@ -11,6 +11,7 @@
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#include <omath/engines/opengl_engine/camera.hpp>
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#include <omath/engines/opengl_engine/camera.hpp>
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#include <omath/engines/source_engine/camera.hpp>
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#include <omath/engines/source_engine/camera.hpp>
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#include <omath/engines/unreal_engine/camera.hpp>
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#include <omath/engines/unreal_engine/camera.hpp>
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#include <omath/linear_algebra/triangle.hpp>
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#include <omath/projection/camera.hpp>
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#include <omath/projection/camera.hpp>
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#include <print>
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#include <print>
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#include <random>
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#include <random>
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@@ -941,3 +942,247 @@ TEST(UnitTestProjection, IWEngine_ZeroAngles_BasisVectors)
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EXPECT_NEAR(up.y, omath::iw_engine::k_abs_up.y, k_eps);
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EXPECT_NEAR(up.y, omath::iw_engine::k_abs_up.y, k_eps);
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EXPECT_NEAR(up.z, omath::iw_engine::k_abs_up.z, k_eps);
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EXPECT_NEAR(up.z, omath::iw_engine::k_abs_up.z, k_eps);
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}
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}
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// ---- extract_projection_params ----
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TEST(UnitTestProjection, ExtractProjectionParams_FovRoundTrip)
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{
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// Source engine applies a 0.75 scale factor to its projection matrix, so
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// extract_projection_params (standard formula) does not round-trip with it.
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// Use Unity engine, which uses a standard projection matrix.
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constexpr float k_eps = 1e-4f;
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(75.f);
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const auto cam = omath::unity_engine::Camera({}, {}, {1280.f, 720.f}, fov, 0.03f, 1000.f);
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const auto params = omath::unity_engine::Camera::extract_projection_params(cam.get_projection_matrix());
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EXPECT_NEAR(params.fov.as_degrees(), 75.f, k_eps);
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}
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TEST(UnitTestProjection, ExtractProjectionParams_AspectRatioRoundTrip)
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{
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constexpr float k_eps = 1e-4f;
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constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
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const auto cam = omath::source_engine::Camera({}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
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||||||
|
const auto params = omath::source_engine::Camera::extract_projection_params(cam.get_projection_matrix());
|
||||||
|
|
||||||
|
EXPECT_NEAR(params.aspect_ratio, 1920.f / 1080.f, k_eps);
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, ExtractProjectionParams_UnityEngine)
|
||||||
|
{
|
||||||
|
constexpr float k_eps = 1e-4f;
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(60.f);
|
||||||
|
const auto cam = omath::unity_engine::Camera({}, {}, {1280.f, 720.f}, fov, 0.03f, 1000.f);
|
||||||
|
|
||||||
|
const auto params = omath::unity_engine::Camera::extract_projection_params(cam.get_projection_matrix());
|
||||||
|
|
||||||
|
EXPECT_NEAR(params.fov.as_degrees(), 60.f, k_eps);
|
||||||
|
EXPECT_NEAR(params.aspect_ratio, 1280.f / 720.f, k_eps);
|
||||||
|
}
|
||||||
|
|
||||||
|
// ---- Accessors ----
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, Accessors_GetFovNearFarOrigin)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const omath::Vector3<float> origin{10.f, 20.f, 30.f};
|
||||||
|
const auto cam = omath::source_engine::Camera(origin, {}, {1920.f, 1080.f}, fov, 0.1f, 500.f);
|
||||||
|
|
||||||
|
EXPECT_NEAR(cam.get_field_of_view().as_degrees(), 90.f, 1e-4f);
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_near_plane(), 0.1f);
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_far_plane(), 500.f);
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_origin().x, 10.f);
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_origin().y, 20.f);
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_origin().z, 30.f);
|
||||||
|
}
|
||||||
|
|
||||||
|
// ---- Setters + cache invalidation ----
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, SetFieldOfView_InvalidatesProjection)
|
||||||
|
{
|
||||||
|
constexpr auto fov_a = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
constexpr auto fov_b = omath::projection::FieldOfView::from_degrees(45.f);
|
||||||
|
auto cam = omath::source_engine::Camera({}, {}, {1920.f, 1080.f}, fov_a, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
const auto proj_before = cam.get_projection_matrix();
|
||||||
|
cam.set_field_of_view(fov_b);
|
||||||
|
const auto proj_after = cam.get_projection_matrix();
|
||||||
|
|
||||||
|
EXPECT_NE(proj_before.at(0, 0), proj_after.at(0, 0));
|
||||||
|
EXPECT_NEAR(cam.get_field_of_view().as_degrees(), 45.f, 1e-4f);
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, SetNearPlane_InvalidatesProjection)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
auto cam = omath::source_engine::Camera({}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
const auto proj_before = cam.get_projection_matrix();
|
||||||
|
cam.set_near_plane(1.f);
|
||||||
|
const auto proj_after = cam.get_projection_matrix();
|
||||||
|
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_near_plane(), 1.f);
|
||||||
|
EXPECT_NE(proj_before.at(2, 2), proj_after.at(2, 2));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, SetFarPlane_InvalidatesProjection)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
auto cam = omath::source_engine::Camera({}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
const auto proj_before = cam.get_projection_matrix();
|
||||||
|
cam.set_far_plane(100.f);
|
||||||
|
const auto proj_after = cam.get_projection_matrix();
|
||||||
|
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_far_plane(), 100.f);
|
||||||
|
EXPECT_NE(proj_before.at(2, 2), proj_after.at(2, 2));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, SetOrigin_InvalidatesViewMatrix)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
// Target is off to the side — stays at the same world position while camera
|
||||||
|
// moves laterally, so the projected X must change.
|
||||||
|
const auto screen_before = cam.world_to_screen({500.f, 100.f, 0.f});
|
||||||
|
cam.set_origin({0.f, 100.f, 0.f}); // lateral shift
|
||||||
|
const auto screen_after = cam.world_to_screen({500.f, 100.f, 0.f});
|
||||||
|
|
||||||
|
ASSERT_TRUE(screen_before.has_value());
|
||||||
|
ASSERT_TRUE(screen_after.has_value());
|
||||||
|
EXPECT_NE(screen_before->x, screen_after->x);
|
||||||
|
EXPECT_FLOAT_EQ(cam.get_origin().y, 100.f);
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, SetViewPort_InvalidatesProjection)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
auto cam = omath::source_engine::Camera({}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
const auto proj_before = cam.get_projection_matrix();
|
||||||
|
// 1280x800 is 8:5, different aspect ratio from 1920x1080 (16:9)
|
||||||
|
cam.set_view_port({1280.f, 800.f});
|
||||||
|
const auto proj_after = cam.get_projection_matrix();
|
||||||
|
|
||||||
|
EXPECT_NE(proj_before.at(0, 0), proj_after.at(0, 0));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, SetViewAngles_InvalidatesViewMatrix)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
auto cam = omath::source_engine::Camera({}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
const auto view_before = cam.get_view_matrix();
|
||||||
|
const omath::source_engine::ViewAngles rotated{
|
||||||
|
omath::source_engine::PitchAngle::from_degrees(30.f),
|
||||||
|
omath::source_engine::YawAngle::from_degrees(45.f),
|
||||||
|
omath::source_engine::RollAngle::from_degrees(0.f)
|
||||||
|
};
|
||||||
|
cam.set_view_angles(rotated);
|
||||||
|
const auto view_after = cam.get_view_matrix();
|
||||||
|
|
||||||
|
EXPECT_NE(view_before.at(0, 0), view_after.at(0, 0));
|
||||||
|
}
|
||||||
|
|
||||||
|
// ---- calc_look_at_angles / look_at ----
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, CalcLookAtAngles_ForwardTarget)
|
||||||
|
{
|
||||||
|
// Source engine: +X is forward. Camera at origin, target on +X axis.
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
const auto angles = cam.calc_look_at_angles({100.f, 0.f, 0.f});
|
||||||
|
|
||||||
|
EXPECT_NEAR(angles.pitch.as_degrees(), 0.f, 1e-4f);
|
||||||
|
EXPECT_NEAR(angles.yaw.as_degrees(), 0.f, 1e-4f);
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, LookAt_ForwardVectorPointsAtTarget)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
cam.look_at({200.f, 0.f, 0.f});
|
||||||
|
const auto fwd = cam.get_abs_forward();
|
||||||
|
|
||||||
|
// After pointing at +X target the forward vector should be ~(1,0,0)
|
||||||
|
EXPECT_NEAR(fwd.x, 1.f, 1e-4f);
|
||||||
|
EXPECT_NEAR(fwd.y, 0.f, 1e-4f);
|
||||||
|
EXPECT_NEAR(fwd.z, 0.f, 1e-4f);
|
||||||
|
}
|
||||||
|
|
||||||
|
// ---- is_culled_by_frustum (triangle) ----
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, TriangleInsideFrustumNotCulled)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
// Small triangle directly in front (Source: +X forward)
|
||||||
|
const omath::Triangle<omath::Vector3<float>> tri{
|
||||||
|
{100.f, 0.f, 1.f},
|
||||||
|
{100.f, 1.f, -1.f},
|
||||||
|
{100.f, -1.f, -1.f}
|
||||||
|
};
|
||||||
|
EXPECT_FALSE(cam.is_culled_by_frustum(tri));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, TriangleBehindCameraCulled)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
// Triangle entirely behind the camera (-X)
|
||||||
|
const omath::Triangle<omath::Vector3<float>> tri{
|
||||||
|
{-100.f, 0.f, 1.f},
|
||||||
|
{-100.f, 1.f, -1.f},
|
||||||
|
{-100.f, -1.f, -1.f}
|
||||||
|
};
|
||||||
|
EXPECT_TRUE(cam.is_culled_by_frustum(tri));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, TriangleBeyondFarPlaneCulled)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
// Triangle beyond the 1000-unit far plane
|
||||||
|
const omath::Triangle<omath::Vector3<float>> tri{
|
||||||
|
{2000.f, 0.f, 1.f},
|
||||||
|
{2000.f, 1.f, -1.f},
|
||||||
|
{2000.f, -1.f, -1.f}
|
||||||
|
};
|
||||||
|
EXPECT_TRUE(cam.is_culled_by_frustum(tri));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, TriangleFarToSideCulled)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
// Triangle far outside the side frustum planes
|
||||||
|
const omath::Triangle<omath::Vector3<float>> tri{
|
||||||
|
{100.f, 5000.f, 0.f},
|
||||||
|
{100.f, 5001.f, 1.f},
|
||||||
|
{100.f, 5001.f, -1.f}
|
||||||
|
};
|
||||||
|
EXPECT_TRUE(cam.is_culled_by_frustum(tri));
|
||||||
|
}
|
||||||
|
|
||||||
|
TEST(UnitTestProjection, TriangleStraddlingFrustumNotCulled)
|
||||||
|
{
|
||||||
|
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
|
||||||
|
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
|
||||||
|
|
||||||
|
// Large triangle with vertices on both sides of the frustum — should not be culled
|
||||||
|
const omath::Triangle<omath::Vector3<float>> tri{
|
||||||
|
{ 100.f, 0.f, 0.f},
|
||||||
|
{ 100.f, 5000.f, 0.f},
|
||||||
|
{ 100.f, 0.f, 5000.f}
|
||||||
|
};
|
||||||
|
EXPECT_FALSE(cam.is_culled_by_frustum(tri));
|
||||||
|
}
|
||||||
|
|||||||
Reference in New Issue
Block a user