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Orange
2025-03-17 09:14:42 +03:00
parent 2fa0c500a7
commit cd452b0397
5 changed files with 72 additions and 4 deletions
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2
CMakeLists.txt
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@@ -5,7 +5,7 @@ project(omath VERSION 1.0.1 LANGUAGES CXX)
include(CMakePackageConfigHelpers)
option(OMATH_BUILD_TESTS "Build unit tests" ON)
option(OMATH_BUILD_TESTS "Build unit tests" OFF)
option(OMATH_THREAT_WARNING_AS_ERROR "Set highest level of warnings and force compiler to treat them as errors" ON)
option(OMATH_BUILD_AS_SHARED_LIBRARY "Build Omath as .so or .dll" OFF)
option(OMATH_USE_AVX2 "Omath will use AVX2 to boost performance" ON)

4
include/omath/engines/iw_engine/Formulas.hpp
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@@ -41,7 +41,9 @@ namespace omath::iw_engine
inline Mat4x4 CalcPerspectiveProjectionMatrix(const float fieldOfView, const float aspectRatio, const float near,
const float far)
{
const float fovHalfTan = std::tan(angles::DegreesToRadians(fieldOfView) / 2.f) * 0.75f;
// NOTE: Need magic number to fix fov calculation, since source inherit Quake proj matrix calculation
constexpr auto kMultiplyFactor = 0.75f;
const float fovHalfTan = std::tan(angles::DegreesToRadians(fieldOfView) / 2.f) * kMultiplyFactor;
return
{

3
include/omath/engines/source_engine/Formulas.hpp
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@@ -40,8 +40,7 @@ namespace omath::source_engine
inline Mat4x4 CalcPerspectiveProjectionMatrix(const float fieldOfView, const float aspectRatio, const float near,
const float far)
{
// NOTE: Needed tp make thing draw normal, since source is wierd
// and use tricky projection matrix formula.
// NOTE: Need magic number to fix fov calculation, since source inherit Quake proj matrix calculation
constexpr auto kMultiplyFactor = 0.75f;
const float fovHalfTan = std::tan(angles::DegreesToRadians(fieldOfView) / 2.f) * kMultiplyFactor;

1
tests/CMakeLists.txt
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@@ -22,6 +22,7 @@ add_executable(unit-tests
engines/UnitTestOpenGL.cpp
engines/UnitTestUnityEngine.cpp
engines/UnitTestSourceEngine.cpp
engines/UnitTestIwEngine.cpp
)

66
tests/engines/UnitTestIwEngine.cpp
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@@ -1,3 +1,69 @@
//
// Created by Vlad on 3/17/2025.
//
#include <gtest/gtest.h>
#include <omath/engines/iw_engine/Camera.hpp>
#include <omath/engines/iw_engine/Constants.hpp>
#include <omath/engines/iw_engine/Formulas.hpp>
TEST(UnitTestEwEngine, ForwardVector)
{
const auto forward = omath::source_engine::ForwardVector({});
EXPECT_EQ(forward, omath::source_engine::kAbsForward);
}
TEST(UnitTestEwEngine, RightVector)
{
const auto right = omath::source_engine::RightVector({});
EXPECT_EQ(right, omath::source_engine::kAbsRight);
}
TEST(UnitTestEwEngine, UpVector)
{
const auto up = omath::source_engine::UpVector({});
EXPECT_EQ(up, omath::source_engine::kAbsUp);
}
TEST(UnitTestEwEngine, ProjectTargetMovedFromCamera)
{
constexpr auto fov = omath::projection::FieldOfView::FromDegrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
for (float distance = 0.02f; distance < 1000.f; distance += 0.01f)
{
const auto projected = cam.WorldToScreen({distance, 0, 0});
EXPECT_TRUE(projected.has_value());
if (!projected.has_value())
continue;
EXPECT_NEAR(projected->x, 960, 0.00001f);
EXPECT_NEAR(projected->y, 540, 0.00001f);
}
}
TEST(UnitTestEwEngine, CameraSetAndGetFov)
{
constexpr auto fov = omath::projection::FieldOfView::FromDegrees(90.f);
auto cam = omath::source_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
EXPECT_EQ(cam.GetFieldOfView().AsDegrees(), 90.f);
cam.SetFieldOfView(omath::projection::FieldOfView::FromDegrees(50.f));
EXPECT_EQ(cam.GetFieldOfView().AsDegrees(), 50.f);
}
TEST(UnitTestEwEngine, CameraSetAndGetOrigin)
{
auto cam = omath::source_engine::Camera({0, 0, 0}, {}, {1920.f, 1080.f}, {}, 0.01f, 1000.f);
EXPECT_EQ(cam.GetOrigin(), omath::Vector3<float>{});
cam.SetFieldOfView(omath::projection::FieldOfView::FromDegrees(50.f));
EXPECT_EQ(cam.GetFieldOfView().AsDegrees(), 50.f);
}