Fixes Vector3 conversion from ImVec2

Corrects the static function signature for creating a Vector3 from an ImVec2.

It was mistakenly returning a Vector3 instead of Vector3.

patch

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,38 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/custom.md

@@ -0,0 +1,10 @@
+---
+name: Custom issue template
+about: Describe this issue template's purpose here.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.gitignore

@@ -1,4 +1,5 @@
 /cmake-build/
 /.idea
 /out
-*.DS_Store
+*.DS_Store
+/extlibs/vcpkg

CMakeLists.txt

@@ -1,11 +1,11 @@
 cmake_minimum_required(VERSION 3.26)
 
-project(omath VERSION 3.0.2 LANGUAGES CXX)
+project(omath VERSION 3.2.1 LANGUAGES CXX)
 
 include(CMakePackageConfigHelpers)
 
 
-option(OMATH_BUILD_TESTS "Build unit tests" OFF)
+option(OMATH_BUILD_TESTS "Build unit tests" ${PROJECT_IS_TOP_LEVEL})
 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)
@@ -14,6 +14,8 @@ option(OMATH_BUILD_EXAMPLES "Build example projects with you can learn & play" O
 option(OMATH_STATIC_MSVC_RUNTIME_LIBRARY "Force Omath to link static runtime" OFF)
 option(OMATH_SUPRESS_SAFETY_CHECKS "Supress some safety checks in release build to improve general performance" ON)
 option(OMATH_USE_UNITY_BUILD "Will enable unity build to speed up compilation" ON)
+option(OMATH_ENABLE_LEGACY "Will enable legacy classes that MUST be used ONLY for backward compatibility" OFF)
+
 
 file(GLOB_RECURSE OMATH_SOURCES CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/source/*.cpp")
 file(GLOB_RECURSE OMATH_HEADERS CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/include/*.hpp")
@@ -56,6 +58,10 @@ if (OMATH_SUPRESS_SAFETY_CHECKS)
     target_compile_definitions(${PROJECT_NAME} PUBLIC OMATH_SUPRESS_SAFETY_CHECKS)
 endif ()
 
+if (OMATH_ENABLE_LEGACY)
+    target_compile_options(${PROJECT_NAME} PUBLIC OMATH_ENABLE_LEGACY)
+endif ()
+
 set_target_properties(${PROJECT_NAME} PROPERTIES
         ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
         LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"

CONTRIBUTING.md

@@ -0,0 +1,32 @@
+## 🤝 Contributing to OMath or other Orange's Projects
+
+### ❕ Prerequisites
+
+- A working up-to-date OMath installation
+- C++ knowledge
+- Git knowledge
+- Ability to ask for help (Feel free to create empty pull-request or PM a maintainer
+  in [Telegram](https://t.me/orange_cpp))
+
+### ⏬ Setting up OMath
+
+Please read INSTALL.md file in repository
+
+### 🔀 Pull requests and Branches
+
+In order to send code back to the official OMath repository, you must first create a copy of OMath on your github
+account ([fork](https://help.github.com/articles/creating-a-pull-request-from-a-fork/)) and
+then [create a pull request](https://help.github.com/articles/creating-a-pull-request-from-a-fork/) back to OMath.
+
+OMath developement is performed on multiple branches. Changes are then pull requested into master. By default, changes
+merged into master will not roll out to stable build users unless the `stable` tag is updated.
+
+### 📜 Code-Style
+
+The orange code-style can be found in `.clang-format`.
+
+### 📦 Building
+
+OMath has already created the  `cmake-build` and `out` directories where cmake/bin files are located. By default, you
+can build OMath by running `cmake --build cmake-build/build/windows-release --target omath -j 6` in the source
+directory.

INSTALL.md

@@ -14,6 +14,20 @@ target_link_libraries(main PRIVATE omath::omath)
 ```
 For detailed commands on installing different versions and more information, please refer to Microsoft's [official instructions](https://learn.microsoft.com/en-us/vcpkg/get_started/overview).
 
+## <img width="28px" src="https://xmake.io/assets/img/logo.svg" /> Using xrepo
+**Note**: Support xrepo for package management
+1. Install [xmake](https://xmake.io/)
+2. Run the following command to install the omath package:
+```
+xrepo install omath
+```
+xmake.lua
+```xmake
+add_requires("omath")
+target("...")
+    add_packages("omath")
+```
+
 ## <img width="28px" src="https://upload.wikimedia.org/wikipedia/commons/e/ef/CMake_logo.svg?" /> Build from source using CMake 
 1. **Preparation**
    

README.md

@@ -7,11 +7,25 @@
 ![GitHub top language](https://img.shields.io/github/languages/top/orange-cpp/omath)
 [![CodeFactor](https://www.codefactor.io/repository/github/orange-cpp/omath/badge)](https://www.codefactor.io/repository/github/orange-cpp/omath)
 ![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/orange-cpp/omath/cmake-multi-platform.yml)
+[![Vcpkg package](https://repology.org/badge/version-for-repo/vcpkg/orange-math.svg)](https://repology.org/project/orange-math/versions)
 ![GitHub forks](https://img.shields.io/github/forks/orange-cpp/omath)
+[![discord badge](https://dcbadge.limes.pink/api/server/https://discord.gg/eDgdaWbqwZ?style=flat)](https://discord.gg/eDgdaWbqwZ)
+[![telegram badge](https://img.shields.io/badge/Telegram-2CA5E0?style=flat-squeare&logo=telegram&logoColor=white)](https://t.me/orangennotes)
+
 </div>
 
 Oranges's Math Library (omath) is a comprehensive, open-source library aimed at providing efficient, reliable, and versatile mathematical functions and algorithms. Developed primarily in C++, this library is designed to cater to a wide range of mathematical operations essential in scientific computing, engineering, and academic research.
 
+<div align = center>
+ <a href="https://www.star-history.com/#orange-cpp/omath&Date">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=orange-cpp/omath&type=Date&theme=dark" />
+    <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=orange-cpp/omath&type=Date" />
+    <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=orange-cpp/omath&type=Date" />
+  </picture>
+ </a>
+</div>
+
 ## 👁‍🗨 Features
 - **Efficiency**: Optimized for performance, ensuring quick computations using AVX2.
 - **Versatility**: Includes a wide array of mathematical functions and algorithms.
@@ -71,7 +85,7 @@ Or even advanced projectile aimbot
 Contributions to `omath` are welcome! Please read `CONTRIBUTING.md` for details on our code of conduct and the process for submitting pull requests.
 
 ## 📜 License
-This project is licensed under the MIT - see the `LICENSE` file for details.
+This project is licensed under the ZLIB - see the `LICENSE` file for details.
 
 ## 💘 Acknowledgments
 -  [All contributors](https://github.com/orange-cpp/omath/graphs/contributors)

include/omath/engines/iw_engine/camera.hpp

@@ -5,18 +5,9 @@
 #pragma once
 #include "omath/engines/iw_engine/constants.hpp"
 #include "omath/projection/camera.hpp"
+#include "traits/camera_trait.hpp"
 
 namespace omath::iw_engine
 {
-    class Camera final : public projection::Camera<Mat4X4, ViewAngles>
-    {
-    public:
-        Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-               const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, float near, float far);
-        void look_at(const Vector3<float>& target) override;
-
-    protected:
-        [[nodiscard]] Mat4X4 calc_view_matrix() const noexcept override;
-        [[nodiscard]] Mat4X4 calc_projection_matrix() const noexcept override;
-    };
+    using Camera =  projection::Camera<Mat4X4, ViewAngles, CameraTrait>;
 } // namespace omath::iw_engine

include/omath/engines/iw_engine/traits/camera_trait.hpp

@@ -0,0 +1,24 @@
+//
+// Created by Vlad on 8/10/2025.
+//
+
+#pragma once
+#include "omath/engines/iw_engine/constants.hpp"
+#include "omath/projection/camera.hpp"
+
+namespace omath::iw_engine
+{
+    class CameraTrait final
+    {
+    public:
+        [[nodiscard]]
+        static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept;
+
+        [[nodiscard]]
+        static Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept;
+        [[nodiscard]]
+        static Mat4X4 calc_projection_matrix(const projection::FieldOfView& fov, const projection::ViewPort& view_port,
+                                             float near, float far) noexcept;
+    };
+
+} // namespace omath::iw_engine

include/omath/engines/iw_engine/traits/pred_engine_trait.hpp

@@ -0,0 +1,79 @@
+//
+// Created by Vlad on 8/6/2025.
+//
+#pragma once
+
+#include "omath/engines/iw_engine/formulas.hpp"
+#include "omath/projectile_prediction/projectile.hpp"
+#include "omath/projectile_prediction/target.hpp"
+#include <optional>
+
+namespace omath::iw_engine
+{
+    class PredEngineTrait final
+    {
+    public:
+        constexpr static Vector3<float> predict_projectile_position(const projectile_prediction::Projectile& projectile,
+                                                                    const float pitch, const float yaw,
+                                                                    const float time, const float gravity) noexcept
+        {
+            auto current_pos = projectile.m_origin
+                               + forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
+                                                 RollAngle::from_degrees(0)})
+                                         * projectile.m_launch_speed * time;
+            current_pos.z -= (gravity * projectile.m_gravity_scale) * (time * time) * 0.5f;
+
+            return current_pos;
+        }
+        [[nodiscard]]
+        static constexpr Vector3<float> predict_target_position(const projectile_prediction::Target& target,
+                                                                const float time, const float gravity) noexcept
+        {
+            auto predicted = target.m_origin + target.m_velocity * time;
+
+            if (target.m_is_airborne)
+                predicted.z -= gravity * (time * time) * 0.5f;
+
+            return predicted;
+        }
+        [[nodiscard]]
+        static float calc_vector_2d_distance(const Vector3<float>& delta) noexcept
+        {
+            return std::sqrt(delta.x * delta.x + delta.y * delta.y);
+        }
+
+        [[nodiscard]]
+        constexpr static float get_vector_height_coordinate(const Vector3<float>& vec) noexcept
+        {
+            return vec.z;
+        }
+
+        [[nodiscard]]
+        static Vector3<float> calc_viewpoint_from_angles(const projectile_prediction::Projectile& projectile,
+                                                         Vector3<float> predicted_target_position,
+                                                         const std::optional<float> projectile_pitch) noexcept
+        {
+            const auto delta2d = calc_vector_2d_distance(predicted_target_position - projectile.m_origin);
+            const auto height = delta2d * std::tan(angles::degrees_to_radians(projectile_pitch.value()));
+
+            return {predicted_target_position.x, predicted_target_position.y, projectile.m_origin.z + height};
+        }
+        // Due to specification of maybe_calculate_projectile_launch_pitch_angle, pitch angle must be:
+        // 89 look up, -89 look down
+        [[nodiscard]]
+        static float calc_direct_pitch_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto distance = origin.distance_to(view_to);
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::asin(delta.z / distance));
+        }
+        [[nodiscard]]
+        static float calc_direct_yaw_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::atan2(delta.y, delta.x));
+        };
+    };
+} // namespace omath::iw_engine

include/omath/engines/opengl_engine/camera.hpp

@@ -4,16 +4,9 @@
 #pragma once
 #include "omath/engines/opengl_engine/constants.hpp"
 #include "omath/projection/camera.hpp"
+#include "traits/camera_trait.hpp"
 
 namespace omath::opengl_engine
 {
-    class Camera final : public projection::Camera<Mat4X4, ViewAngles>
-    {
-    public:
-        Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-               const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, float near, float far);
-        void look_at(const Vector3<float>& target) override;
-        [[nodiscard]] Mat4X4 calc_view_matrix() const noexcept override;
-        [[nodiscard]] Mat4X4 calc_projection_matrix() const noexcept override;
-    };
+    using Camera =  projection::Camera<Mat4X4, ViewAngles, CameraTrait>;
 } // namespace omath::opengl_engine

include/omath/engines/opengl_engine/traits/camera_trait.hpp

@@ -0,0 +1,24 @@
+//
+// Created by Vlad on 8/10/2025.
+//
+
+#pragma once
+#include "omath/engines/opengl_engine/constants.hpp"
+#include "omath/projection/camera.hpp"
+
+namespace omath::opengl_engine
+{
+    class CameraTrait final
+    {
+    public:
+        [[nodiscard]]
+        static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept;
+
+        [[nodiscard]]
+        static Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept;
+        [[nodiscard]]
+        static Mat4X4 calc_projection_matrix(const projection::FieldOfView& fov, const projection::ViewPort& view_port,
+                                             float near, float far) noexcept;
+    };
+
+} // namespace omath::opengl_engine

include/omath/engines/opengl_engine/traits/pred_engine_trait.hpp

@@ -0,0 +1,78 @@
+//
+// Created by Vlad on 8/6/2025.
+//
+#pragma once
+#include "omath/engines/opengl_engine/formulas.hpp"
+#include "omath/projectile_prediction/projectile.hpp"
+#include "omath/projectile_prediction/target.hpp"
+#include <optional>
+
+namespace omath::opengl_engine
+{
+    class PredEngineTrait final
+    {
+    public:
+        constexpr static Vector3<float> predict_projectile_position(const projectile_prediction::Projectile& projectile,
+                                                                    const float pitch, const float yaw,
+                                                                    const float time, const float gravity) noexcept
+        {
+            auto current_pos = projectile.m_origin
+                               + forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
+                                                 RollAngle::from_degrees(0)})
+                                         * projectile.m_launch_speed * time;
+            current_pos.y -= (gravity * projectile.m_gravity_scale) * (time * time) * 0.5f;
+
+            return current_pos;
+        }
+        [[nodiscard]]
+        static constexpr Vector3<float> predict_target_position(const projectile_prediction::Target& target,
+                                                                const float time, const float gravity) noexcept
+        {
+            auto predicted = target.m_origin + target.m_velocity * time;
+
+            if (target.m_is_airborne)
+                predicted.y -= gravity * (time * time) * 0.5f;
+
+            return predicted;
+        }
+        [[nodiscard]]
+        static float calc_vector_2d_distance(const Vector3<float>& delta) noexcept
+        {
+            return std::sqrt(delta.x * delta.x + delta.z * delta.z);
+        }
+
+        [[nodiscard]]
+        constexpr static float get_vector_height_coordinate(const Vector3<float>& vec) noexcept
+        {
+            return vec.y;
+        }
+
+        [[nodiscard]]
+        static Vector3<float> calc_viewpoint_from_angles(const projectile_prediction::Projectile& projectile,
+                                                         Vector3<float> predicted_target_position,
+                                                         const std::optional<float> projectile_pitch) noexcept
+        {
+            const auto delta2d = calc_vector_2d_distance(predicted_target_position - projectile.m_origin);
+            const auto height = delta2d * std::tan(angles::degrees_to_radians(projectile_pitch.value()));
+
+            return {predicted_target_position.x, predicted_target_position.y + height, projectile.m_origin.z};
+        }
+        // Due to specification of maybe_calculate_projectile_launch_pitch_angle, pitch angle must be:
+        // 89 look up, -89 look down
+        [[nodiscard]]
+        static float calc_direct_pitch_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto distance = origin.distance_to(view_to);
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::asin(delta.y / distance));
+        }
+        [[nodiscard]]
+        static float calc_direct_yaw_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::atan2(delta.z, delta.x));
+        };
+    };
+} // namespace omath::opengl_engine

include/omath/engines/source_engine/camera.hpp

@@ -4,18 +4,8 @@
 #pragma once
 #include "omath/engines/source_engine/constants.hpp"
 #include "omath/projection/camera.hpp"
-
+#include "traits/camera_trait.hpp"
 namespace omath::source_engine
 {
-    class Camera final : public projection::Camera<Mat4X4, ViewAngles>
-    {
-    public:
-        Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-               const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, float near, float far);
-        void look_at(const Vector3<float>& target) override;
-
-    protected:
-        [[nodiscard]] Mat4X4 calc_view_matrix() const noexcept override;
-        [[nodiscard]] Mat4X4 calc_projection_matrix() const noexcept override;
-    };
+    using Camera =  projection::Camera<Mat4X4, ViewAngles, CameraTrait>;
 } // namespace omath::source_engine

include/omath/engines/source_engine/traits/camera_trait.hpp

@@ -0,0 +1,24 @@
+//
+// Created by Vlad on 8/10/2025.
+//
+
+#pragma once
+#include "omath/engines/source_engine/constants.hpp"
+#include "omath/projection/camera.hpp"
+
+namespace omath::source_engine
+{
+    class CameraTrait final
+    {
+    public:
+        [[nodiscard]]
+        static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept;
+
+        [[nodiscard]]
+        static Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept;
+        [[nodiscard]]
+        static Mat4X4 calc_projection_matrix(const projection::FieldOfView& fov, const projection::ViewPort& view_port,
+                                             float near, float far) noexcept;
+    };
+
+} // namespace omath::source_engine

include/omath/engines/source_engine/traits/pred_engine_trait.hpp

@@ -0,0 +1,79 @@
+//
+// Created by Vlad on 8/3/2025.
+//
+
+#pragma once
+#include "omath/engines/source_engine/formulas.hpp"
+#include "omath/projectile_prediction/projectile.hpp"
+#include "omath/projectile_prediction/target.hpp"
+#include <optional>
+
+namespace omath::source_engine
+{
+    class PredEngineTrait final
+    {
+    public:
+        constexpr static Vector3<float> predict_projectile_position(const projectile_prediction::Projectile& projectile,
+                                                                    const float pitch, const float yaw,
+                                                                    const float time, const float gravity) noexcept
+        {
+            auto current_pos = projectile.m_origin
+                               + forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
+                                                 RollAngle::from_degrees(0)})
+                                         * projectile.m_launch_speed * time;
+            current_pos.z -= (gravity * projectile.m_gravity_scale) * (time * time) * 0.5f;
+
+            return current_pos;
+        }
+        [[nodiscard]]
+        static constexpr Vector3<float> predict_target_position(const projectile_prediction::Target& target,
+                                                                const float time, const float gravity) noexcept
+        {
+            auto predicted = target.m_origin + target.m_velocity * time;
+
+            if (target.m_is_airborne)
+                predicted.z -= gravity * (time * time) * 0.5f;
+
+            return predicted;
+        }
+        [[nodiscard]]
+        static float calc_vector_2d_distance(const Vector3<float>& delta) noexcept
+        {
+            return std::sqrt(delta.x * delta.x + delta.y * delta.y);
+        }
+
+        [[nodiscard]]
+        constexpr static float get_vector_height_coordinate(const Vector3<float>& vec) noexcept
+        {
+            return vec.z;
+        }
+
+        [[nodiscard]]
+        static Vector3<float> calc_viewpoint_from_angles(const projectile_prediction::Projectile& projectile,
+                                                         Vector3<float> predicted_target_position,
+                                                         const std::optional<float> projectile_pitch) noexcept
+        {
+            const auto delta2d = calc_vector_2d_distance(predicted_target_position - projectile.m_origin);
+            const auto height = delta2d * std::tan(angles::degrees_to_radians(projectile_pitch.value()));
+
+            return {predicted_target_position.x, predicted_target_position.y, projectile.m_origin.z + height};
+        }
+        // Due to specification of maybe_calculate_projectile_launch_pitch_angle, pitch angle must be:
+        // 89 look up, -89 look down
+        [[nodiscard]]
+        static float calc_direct_pitch_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto distance = origin.distance_to(view_to);
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::asin(delta.z / distance));
+        }
+        [[nodiscard]]
+        static float calc_direct_yaw_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::atan2(delta.y, delta.x));
+        };
+    };
+} // namespace omath::source_engine

include/omath/engines/unity_engine/camera.hpp

@@ -5,18 +5,9 @@
 #pragma once
 #include "omath/engines/unity_engine/constants.hpp"
 #include "omath/projection/camera.hpp"
+#include "traits/camera_trait.hpp"
 
 namespace omath::unity_engine
 {
-    class Camera final : public projection::Camera<Mat4X4, ViewAngles>
-    {
-    public:
-        Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-               const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, float near, float far);
-        void look_at(const Vector3<float>& target) override;
-
-    protected:
-        [[nodiscard]] Mat4X4 calc_view_matrix() const noexcept override;
-        [[nodiscard]] Mat4X4 calc_projection_matrix() const noexcept override;
-    };
+    using Camera =  projection::Camera<Mat4X4, ViewAngles, CameraTrait>;
 } // namespace omath::unity_engine

include/omath/engines/unity_engine/traits/camera_trait.hpp

@@ -0,0 +1,24 @@
+//
+// Created by Vlad on 8/10/2025.
+//
+
+#pragma once
+#include "omath/engines/unity_engine/formulas.hpp"
+#include "omath/projection/camera.hpp"
+
+namespace omath::unity_engine
+{
+    class CameraTrait final
+    {
+    public:
+        [[nodiscard]]
+        static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept;
+
+        [[nodiscard]]
+        static Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept;
+        [[nodiscard]]
+        static Mat4X4 calc_projection_matrix(const projection::FieldOfView& fov, const projection::ViewPort& view_port,
+                                             float near, float far) noexcept;
+    };
+
+} // namespace omath::unity_engine

include/omath/engines/unity_engine/traits/pred_engine_trait.hpp

@@ -0,0 +1,78 @@
+//
+// Created by Vlad on 8/6/2025.
+//
+#pragma once
+#include "omath/engines/unity_engine/formulas.hpp"
+#include "omath/projectile_prediction/projectile.hpp"
+#include "omath/projectile_prediction/target.hpp"
+#include <optional>
+
+namespace omath::unity_engine
+{
+    class PredEngineTrait final
+    {
+    public:
+        constexpr static Vector3<float> predict_projectile_position(const projectile_prediction::Projectile& projectile,
+                                                                    const float pitch, const float yaw,
+                                                                    const float time, const float gravity) noexcept
+        {
+            auto current_pos = projectile.m_origin
+                               + forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
+                                                 RollAngle::from_degrees(0)})
+                                         * projectile.m_launch_speed * time;
+            current_pos.y -= (gravity * projectile.m_gravity_scale) * (time * time) * 0.5f;
+
+            return current_pos;
+        }
+        [[nodiscard]]
+        static constexpr Vector3<float> predict_target_position(const projectile_prediction::Target& target,
+                                                                const float time, const float gravity) noexcept
+        {
+            auto predicted = target.m_origin + target.m_velocity * time;
+
+            if (target.m_is_airborne)
+                predicted.y -= gravity * (time * time) * 0.5f;
+
+            return predicted;
+        }
+        [[nodiscard]]
+        static float calc_vector_2d_distance(const Vector3<float>& delta) noexcept
+        {
+            return std::sqrt(delta.x * delta.x + delta.z * delta.z);
+        }
+
+        [[nodiscard]]
+        constexpr static float get_vector_height_coordinate(const Vector3<float>& vec) noexcept
+        {
+            return vec.y;
+        }
+
+        [[nodiscard]]
+        static Vector3<float> calc_viewpoint_from_angles(const projectile_prediction::Projectile& projectile,
+                                                         Vector3<float> predicted_target_position,
+                                                         const std::optional<float> projectile_pitch) noexcept
+        {
+            const auto delta2d = calc_vector_2d_distance(predicted_target_position - projectile.m_origin);
+            const auto height = delta2d * std::tan(angles::degrees_to_radians(projectile_pitch.value()));
+
+            return {predicted_target_position.x, predicted_target_position.y + height, projectile.m_origin.z};
+        }
+        // Due to specification of maybe_calculate_projectile_launch_pitch_angle, pitch angle must be:
+        // 89 look up, -89 look down
+        [[nodiscard]]
+        static float calc_direct_pitch_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto distance = origin.distance_to(view_to);
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::asin(delta.y / distance));
+        }
+        [[nodiscard]]
+        static float calc_direct_yaw_angle(const Vector3<float>& origin, const Vector3<float>& view_to) noexcept
+        {
+            const auto delta = view_to - origin;
+
+            return angles::radians_to_degrees(std::atan2(delta.z, delta.x));
+        };
+    };
+} // namespace omath::unity_engine

include/omath/matrix.hpp

@@ -1,4 +1,7 @@
 #pragma once
+
+#ifdef OMATH_ENABLE_LEGACY
+
 #include "omath/vector3.hpp"
 #include <initializer_list>
 #include <memory>
@@ -106,3 +109,4 @@ namespace omath
         std::unique_ptr<float[]> m_data;
     };
 } // namespace omath
+#endif

include/omath/projectile_prediction/proj_pred_engine.hpp

@@ -8,12 +8,12 @@
 
 namespace omath::projectile_prediction
 {
-    class ProjPredEngine
+    class ProjPredEngineInterface
     {
     public:
         [[nodiscard]]
         virtual std::optional<Vector3<float>> maybe_calculate_aim_point(const Projectile& projectile,
                                                                         const Target& target) const = 0;
-        virtual ~ProjPredEngine() = default;
+        virtual ~ProjPredEngineInterface() = default;
     };
 } // namespace omath::projectile_prediction

include/omath/projectile_prediction/proj_pred_engine_avx2.hpp

@@ -6,7 +6,7 @@
 
 namespace omath::projectile_prediction
 {
-    class ProjPredEngineAvx2 final : public ProjPredEngine
+    class ProjPredEngineAvx2 final : public ProjPredEngineInterface
     {
     public:
         [[nodiscard]] std::optional<Vector3<float>>

include/omath/projectile_prediction/proj_pred_engine_legacy.hpp

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include "omath/engines/source_engine/traits/pred_engine_trait.hpp"
 #include "omath/projectile_prediction/proj_pred_engine.hpp"
 #include "omath/projectile_prediction/projectile.hpp"
 #include "omath/projectile_prediction/target.hpp"
@@ -12,15 +13,65 @@
 
 namespace omath::projectile_prediction
 {
-    class ProjPredEngineLegacy final : public ProjPredEngine
+    template<class T>
+    concept PredEngineConcept =
+            requires(const Projectile& projectile, const Target& target, const Vector3<float>& vec_a,
+                     const Vector3<float>& vec_b,
+                     Vector3<float> v3, // by-value for calc_viewpoint_from_angles
+                     float pitch, float yaw, float time, float gravity, std::optional<float> maybe_pitch) {
+                // Presence + return types
+                { T::predict_projectile_position(projectile, pitch, yaw, time, gravity) } -> std::same_as<Vec3>;
+                { T::predict_target_position(target, time, gravity) } -> std::same_as<Vec3>;
+                { T::calc_vector_2d_distance(vec_a) } -> std::same_as<float>;
+                { T::get_vector_height_coordinate(vec_b) } -> std::same_as<float>;
+                { T::calc_viewpoint_from_angles(projectile, v3, maybe_pitch) } -> std::same_as<Vec3>;
+                { T::calc_direct_pitch_angle(vec_a, vec_b) } -> std::same_as<float>;
+                { T::calc_direct_yaw_angle(vec_a, vec_b) } -> std::same_as<float>;
+
+                // Enforce noexcept as in PredEngineTrait
+                requires noexcept(T::predict_projectile_position(projectile, pitch, yaw, time, gravity));
+                requires noexcept(T::predict_target_position(target, time, gravity));
+                requires noexcept(T::calc_vector_2d_distance(vec_a));
+                requires noexcept(T::get_vector_height_coordinate(vec_b));
+                requires noexcept(T::calc_viewpoint_from_angles(projectile, v3, maybe_pitch));
+                requires noexcept(T::calc_direct_pitch_angle(vec_a, vec_b));
+                requires noexcept(T::calc_direct_yaw_angle(vec_a, vec_b));
+            };
+    template<class EngineTrait = source_engine::PredEngineTrait>
+    requires PredEngineConcept<EngineTrait>
+    class ProjPredEngineLegacy final : public ProjPredEngineInterface
     {
     public:
-        explicit ProjPredEngineLegacy(float gravity_constant, float simulation_time_step, float maximum_simulation_time,
-                                      float distance_tolerance);
+        explicit ProjPredEngineLegacy(const float gravity_constant, const float simulation_time_step,
+                                      const float maximum_simulation_time, const float distance_tolerance)
+            : m_gravity_constant(gravity_constant), m_simulation_time_step(simulation_time_step),
+              m_maximum_simulation_time(maximum_simulation_time), m_distance_tolerance(distance_tolerance)
+        {
+        }
 
         [[nodiscard]]
         std::optional<Vector3<float>> maybe_calculate_aim_point(const Projectile& projectile,
-                                                                const Target& target) const override;
+                                                                const Target& target) const override
+        {
+            for (float time = 0.f; time < m_maximum_simulation_time; time += m_simulation_time_step)
+            {
+                const auto predicted_target_position =
+                        EngineTrait::predict_target_position(target, time, m_gravity_constant);
+
+                const auto projectile_pitch =
+                        maybe_calculate_projectile_launch_pitch_angle(projectile, predicted_target_position);
+
+                if (!projectile_pitch.has_value()) [[unlikely]]
+                    continue;
+
+                if (!is_projectile_reached_target(predicted_target_position, projectile, projectile_pitch.value(),
+                                                  time))
+                    continue;
+
+                return EngineTrait::calc_viewpoint_from_angles(projectile, predicted_target_position, projectile_pitch);
+            }
+            return std::nullopt;
+        }
 
     private:
         const float m_gravity_constant;
@@ -28,13 +79,56 @@ namespace omath::projectile_prediction
         const float m_maximum_simulation_time;
         const float m_distance_tolerance;
 
+        // Realization of this formula:
+        // https://stackoverflow.com/questions/54917375/how-to-calculate-the-angle-to-shoot-a-bullet-in-order-to-hit-a-moving-target
+        /*
+        \[
+        \theta \;=\; \arctan\!\Biggl(
+        \frac{%
+        v^{2}\;\pm\;\sqrt{\,v^{4}-g\!\left(gx^{2}+2yv^{2}\right)\,}
+        }{%
+        gx
+       }\Biggr)
+       \]
+        */
         [[nodiscard]]
         std::optional<float>
         maybe_calculate_projectile_launch_pitch_angle(const Projectile& projectile,
-                                                      const Vector3<float>& target_position) const noexcept;
+                                                      const Vector3<float>& target_position) const noexcept
+        {
+            const auto bullet_gravity = m_gravity_constant * projectile.m_gravity_scale;
 
+            if (bullet_gravity == 0.f)
+                return EngineTrait::calc_direct_pitch_angle(projectile.m_origin, target_position);
+
+            const auto delta = target_position - projectile.m_origin;
+
+            const auto distance2d = EngineTrait::calc_vector_2d_distance(delta);
+            const auto distance2d_sqr = distance2d * distance2d;
+            const auto launch_speed_sqr = projectile.m_launch_speed * projectile.m_launch_speed;
+
+            float root = launch_speed_sqr * launch_speed_sqr
+                         - bullet_gravity
+                                   * (bullet_gravity * distance2d_sqr
+                                      + 2.0f * EngineTrait::get_vector_height_coordinate(delta) * launch_speed_sqr);
+
+            if (root < 0.0f) [[unlikely]]
+                return std::nullopt;
+
+            root = std::sqrt(root);
+            const float angle = std::atan((launch_speed_sqr - root) / (bullet_gravity * distance2d));
+
+            return angles::radians_to_degrees(angle);
+        }
         [[nodiscard]]
         bool is_projectile_reached_target(const Vector3<float>& target_position, const Projectile& projectile,
-                                          float pitch, float time) const noexcept;
+                                          const float pitch, const float time) const noexcept
+        {
+            const auto yaw = EngineTrait::calc_direct_yaw_angle(projectile.m_origin, target_position);
+            const auto projectile_position =
+                    EngineTrait::predict_projectile_position(projectile, pitch, yaw, time, m_gravity_constant);
+
+            return projectile_position.distance_to(target_position) <= m_distance_tolerance;
+        }
     };
 } // namespace omath::projectile_prediction

include/omath/projectile_prediction/projectile.hpp

@@ -10,9 +10,6 @@ namespace omath::projectile_prediction
     class Projectile final
     {
     public:
-        [[nodiscard]]
-        Vector3<float> predict_position(float pitch, float yaw, float time, float gravity) const noexcept;
-
         Vector3<float> m_origin;
         float m_launch_speed{};
         float m_gravity_scale{};

include/omath/projectile_prediction/target.hpp

@@ -10,17 +10,6 @@ namespace omath::projectile_prediction
     class Target final
     {
     public:
-        [[nodiscard]]
-        constexpr Vector3<float> predict_position(const float time, const float gravity) const noexcept
-        {
-            auto predicted = m_origin + m_velocity * time;
-
-            if (m_is_airborne)
-                predicted.z -= gravity * (time*time) * 0.5f;
-
-            return predicted;
-        }
-
         Vector3<float> m_origin;
         Vector3<float> m_velocity;
         bool m_is_airborne{};

include/omath/projection/camera.hpp

@@ -26,11 +26,27 @@ namespace omath::projection
     };
     using FieldOfView = Angle<float, 0.f, 180.f, AngleFlags::Clamped>;
 
-    template<class Mat4X4Type, class ViewAnglesType>
-    class Camera
+    template<class T, class MatType, class ViewAnglesType>
+    concept CameraEngineConcept =
+            requires(const Vector3<float>& cam_origin, const Vector3<float>& look_at, const ViewAnglesType& angles,
+                     const FieldOfView& fov, const ViewPort& viewport, float znear, float zfar) {
+                // Presence + return types
+                { T::calc_look_at_angle(cam_origin, look_at) } -> std::same_as<ViewAnglesType>;
+                { T::calc_view_matrix(angles, cam_origin) } -> std::same_as<MatType>;
+                { T::calc_projection_matrix(fov, viewport, znear, zfar) } -> std::same_as<MatType>;
+
+                // Enforce noexcept as in the trait declaration
+                requires noexcept(T::calc_look_at_angle(cam_origin, look_at));
+                requires noexcept(T::calc_view_matrix(angles, cam_origin));
+                requires noexcept(T::calc_projection_matrix(fov, viewport, znear, zfar));
+            };
+
+    template<class Mat4X4Type, class ViewAnglesType, class TraitClass>
+    requires CameraEngineConcept<TraitClass, Mat4X4Type, ViewAnglesType>
+    class Camera final
     {
     public:
-        virtual ~Camera() = default;
+        ~Camera() = default;
         Camera(const Vector3<float>& position, const ViewAnglesType& view_angles, const ViewPort& view_port,
                const FieldOfView& fov, const float near, const float far) noexcept
             : m_view_port(view_port), m_field_of_view(fov), m_far_plane_distance(far), m_near_plane_distance(near),
@@ -39,15 +55,16 @@ namespace omath::projection
         }
 
     protected:
-        virtual void look_at(const Vector3<float>& target) = 0;
-
-        [[nodiscard]] virtual Mat4X4Type calc_view_matrix() const noexcept = 0;
-
-        [[nodiscard]] virtual Mat4X4Type calc_projection_matrix() const noexcept = 0;
+        void look_at(const Vector3<float>& target)
+        {
+            m_view_angles = TraitClass::calc_look_at_angle(m_origin, target);
+        }
 
         [[nodiscard]] Mat4X4Type calc_view_projection_matrix() const noexcept
         {
-            return calc_projection_matrix() * calc_view_matrix();
+            return TraitClass::calc_projection_matrix(m_field_of_view, m_view_port, m_near_plane_distance,
+                                                      m_far_plane_distance)
+                   * TraitClass::calc_view_matrix(m_view_angles, m_origin);
         }
 
     public:
@@ -169,6 +186,18 @@ namespace omath::projection
 
         [[nodiscard]] Vector3<float> ndc_to_screen_position(const Vector3<float>& ndc) const noexcept
         {
+/*
+                    ^
+                    |        y
+                1   |
+                    |
+                    |
+        -1 ---------0--------- 1  --> x
+                    |
+                    |
+               -1   |
+                    v
+*/
             return {(ndc.x + 1.f) / 2.f * m_view_port.m_width, (1.f - ndc.y) / 2.f * m_view_port.m_height, ndc.z};
         }
     };

include/omath/vector2.hpp

@@ -142,7 +142,7 @@ namespace omath
         [[nodiscard]] Vector2 normalized() const noexcept
         {
             const Type len = length();
-            return len > 0.f ? *this / len : *this;
+            return len > static_cast<Type>(0) ? *this / len : *this;
         }
 #endif
         [[nodiscard]] constexpr Type length_sqr() const noexcept
@@ -153,8 +153,8 @@ namespace omath
         constexpr Vector2& abs() noexcept
         {
             // FIXME: Replace with std::abs, if it will become constexprable
-            x = x < 0 ? -x : x;
-            y = y < 0 ? -y : y;
+            x = x < static_cast<Type>(0) ? -x : x;
+            y = y < static_cast<Type>(0) ? -y : y;
             return *this;
         }
 
@@ -190,6 +190,29 @@ namespace omath
             return x + y;
         }
 
+        [[nodiscard]]
+        bool operator<(const Vector2& other) const noexcept
+        {
+            return length() < other.length();
+        }
+        [[nodiscard]]
+        bool operator>(const Vector2& other) const noexcept
+        {
+            return length() > other.length();
+        }
+
+        [[nodiscard]]
+        bool operator<=(const Vector2& other) const noexcept
+        {
+            return length() <= other.length();
+        }
+
+        [[nodiscard]]
+        bool operator>=(const Vector2& other) const noexcept
+        {
+            return length() >= other.length();
+        }
+
         [[nodiscard]]
         constexpr std::tuple<Type, Type> as_tuple() const noexcept
         {
@@ -202,6 +225,11 @@ namespace omath
         {
             return {static_cast<float>(this->x), static_cast<float>(this->y)};
         }
+        [[nodiscard]]
+        static Vector2 from_im_vec2(const ImVec2& other) noexcept
+        {
+            return {static_cast<Type>(other.x), static_cast<Type>(other.y)};
+        }
 #endif
     };
 } // namespace omath

include/omath/vector3.hpp

@@ -151,7 +151,7 @@ namespace omath
         {
             const Type len = this->length();
 
-            return len != 0 ? *this / len : *this;
+            return len != static_cast<Type>(0) ? *this / len : *this;
         }
 
         [[nodiscard]] Type length_2d() const noexcept
@@ -221,7 +221,7 @@ namespace omath
         {
             const auto bottom = length() * other.length();
 
-            if (bottom == 0.f)
+            if (bottom == static_cast<Type>(0))
                 return std::unexpected(Vector3Error::IMPOSSIBLE_BETWEEN_ANGLE);
 
             return Angle<float, 0.f, 180.f, AngleFlags::Clamped>::from_radians(std::acos(dot(other) / bottom));
@@ -230,7 +230,7 @@ namespace omath
         [[nodiscard]] bool is_perpendicular(const Vector3& other) const noexcept
         {
             if (const auto angle = angle_between(other))
-                return angle->as_degrees() == 90.f;
+                return angle->as_degrees() == static_cast<Type>(90);
 
             return false;
         }
@@ -253,6 +253,30 @@ namespace omath
             return {angles::radians_to_degrees(std::asin(delta.z / distance)),
                     angles::radians_to_degrees(std::atan2(delta.y, delta.x)), 0};
         }
+
+        [[nodiscard]]
+        bool operator<(const Vector3& other) const noexcept
+        {
+            return length() < other.length();
+        }
+
+        [[nodiscard]]
+        bool operator>(const Vector3& other) const noexcept
+        {
+            return length() > other.length();
+        }
+
+        [[nodiscard]]
+        bool operator<=(const Vector3& other) const noexcept
+        {
+            return length() <= other.length();
+        }
+
+        [[nodiscard]]
+        bool operator>=(const Vector3& other) const noexcept
+        {
+            return length() >= other.length();
+        }
     };
 } // namespace omath
 // ReSharper disable once CppRedundantNamespaceDefinition

include/omath/vector4.hpp

@@ -18,7 +18,7 @@ namespace omath
         constexpr Vector4(const Type& x, const Type& y, const Type& z, const Type& w): Vector3<Type>(x, y, z), w(w)
         {
         }
-        constexpr Vector4() noexcept : Vector3<Type>(), w(0) {};
+        constexpr Vector4() noexcept: Vector3<Type>(), w(static_cast<Type>(0)) {};
 
         [[nodiscard]]
         constexpr bool operator==(const Vector4& other) const noexcept
@@ -89,7 +89,7 @@ namespace omath
             return Vector3<Type>::dot(other) + w * other.w;
         }
 
-        [[nodiscard]] Vector3<Type> length() const noexcept
+        [[nodiscard]] Type length() const noexcept
         {
             return std::sqrt(length_sqr());
         }
@@ -158,6 +158,30 @@ namespace omath
             return Vector3<Type>::sum() + w;
         }
 
+        [[nodiscard]]
+        bool operator<(const Vector4& other) const noexcept
+        {
+            return length() < other.length();
+        }
+
+        [[nodiscard]]
+        bool operator>(const Vector4& other) const noexcept
+        {
+            return length() > other.length();
+        }
+
+        [[nodiscard]]
+        bool operator<=(const Vector4& other) const noexcept
+        {
+            return length() <= other.length();
+        }
+
+        [[nodiscard]]
+        bool operator>=(const Vector4& other) const noexcept
+        {
+            return length() >= other.length();
+        }
+
 #ifdef OMATH_IMGUI_INTEGRATION
         [[nodiscard]]
         ImVec4 to_im_vec4() const noexcept
@@ -169,6 +193,12 @@ namespace omath
                     static_cast<float>(w),
             };
         }
+        [[nodiscard]]
+        static Vector4<float> from_im_vec4(const ImVec4& other) noexcept
+        {
+            return {static_cast<Type>(other.x), static_cast<Type>(other.y), static_cast<Type>(other.z)};
+        }
+    }
 #endif
-    };
+};
 } // namespace omath

source/engines/iw_engine/camera.cpp

@@ -1,33 +0,0 @@
-//
-// Created by Vlad on 3/17/2025.
-//
-#include "omath/engines/iw_engine/camera.hpp"
-#include "omath/engines/iw_engine/formulas.hpp"
-
-namespace omath::iw_engine
-{
-
-    Camera::Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-                   const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, const float near, const float far)
-        : projection::Camera<Mat4X4, ViewAngles>(position, view_angles, view_port, fov, near, far)
-    {
-    }
-    void Camera::look_at([[maybe_unused]] const Vector3<float>& target)
-    {
-        const float distance = m_origin.distance_to(target);
-        const auto delta = target - m_origin;
-
-        m_view_angles.pitch = PitchAngle::from_radians(std::asin(delta.z / distance));
-        m_view_angles.yaw = -YawAngle::from_radians(std::atan2(delta.y, delta.x));
-        m_view_angles.roll = RollAngle::from_radians(0.f);
-    }
-    Mat4X4 Camera::calc_view_matrix() const noexcept
-    {
-        return iw_engine::calc_view_matrix(m_view_angles, m_origin);
-    }
-    Mat4X4 Camera::calc_projection_matrix() const noexcept
-    {
-        return calc_perspective_projection_matrix(m_field_of_view.as_degrees(), m_view_port.aspect_ratio(),
-                                                  m_near_plane_distance, m_far_plane_distance);
-    }
-} // namespace omath::iw_engine

source/engines/iw_engine/traits/camera_trait.cpp

@@ -0,0 +1,27 @@
+//
+// Created by Vlad on 8/11/2025.
+//
+#include "omath/engines/iw_engine/traits/camera_trait.hpp"
+
+namespace omath::iw_engine
+{
+
+    ViewAngles CameraTrait::calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept
+    {
+        const auto distance = cam_origin.distance_to(look_at);
+        const auto delta = cam_origin - look_at;
+
+        return {PitchAngle::from_radians(-std::asin(delta.z / distance)),
+                YawAngle::from_radians(std::atan2(delta.y, delta.x)), RollAngle::from_radians(0.f)};
+    }
+    Mat4X4 CameraTrait::calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
+    {
+        return iw_engine::calc_view_matrix(angles, cam_origin);
+    }
+    Mat4X4 CameraTrait::calc_projection_matrix(const projection::FieldOfView& fov,
+                                               const projection::ViewPort& view_port, const float near,
+                                               const float far) noexcept
+    {
+        return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near, far);
+    }
+} // namespace omath::iw_engine

source/engines/opengl_engine/camera.cpp

@@ -1,33 +0,0 @@
-//
-// Created by Orange on 12/23/2024.
-//
-#include "omath/engines/opengl_engine/camera.hpp"
-#include "omath/engines/opengl_engine/formulas.hpp"
-
-namespace omath::opengl_engine
-{
-
-    Camera::Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-                   const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, const float near, const float far)
-        : projection::Camera<Mat4X4, ViewAngles>(position, view_angles, view_port, fov, near, far)
-    {
-    }
-    void Camera::look_at([[maybe_unused]] const Vector3<float>& target)
-    {
-        const float distance = m_origin.distance_to(target);
-        const auto delta = target - m_origin;
-
-        m_view_angles.pitch = PitchAngle::from_radians(std::asin(delta.z / distance));
-        m_view_angles.yaw = -YawAngle::from_radians(std::atan2(delta.y, delta.x));
-        m_view_angles.roll = RollAngle::from_radians(0.f);
-    }
-    Mat4X4 Camera::calc_view_matrix() const noexcept
-    {
-        return opengl_engine::calc_view_matrix(m_view_angles, m_origin);
-    }
-    Mat4X4 Camera::calc_projection_matrix() const noexcept
-    {
-        return calc_perspective_projection_matrix(m_field_of_view.as_degrees(), m_view_port.aspect_ratio(),
-                                                  m_near_plane_distance, m_far_plane_distance);
-    }
-} // namespace omath::opengl_engine

source/engines/opengl_engine/traits/camera_trait.cpp

@@ -0,0 +1,28 @@
+//
+// Created by Vlad on 8/11/2025.
+//
+#include "omath/engines/opengl_engine/traits/camera_trait.hpp"
+
+
+namespace omath::opengl_engine
+{
+
+    ViewAngles CameraTrait::calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept
+    {
+        const auto distance = cam_origin.distance_to(look_at);
+        const auto delta = cam_origin - look_at;
+
+        return {PitchAngle::from_radians(-std::asin(delta.y / distance)),
+                YawAngle::from_radians(std::atan2(delta.z, delta.x)), RollAngle::from_radians(0.f)};
+    }
+    Mat4X4 CameraTrait::calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
+    {
+        return opengl_engine::calc_view_matrix(angles, cam_origin);
+    }
+    Mat4X4 CameraTrait::calc_projection_matrix(const projection::FieldOfView& fov,
+                                               const projection::ViewPort& view_port, const float near,
+                                               const float far) noexcept
+    {
+        return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near, far);
+    }
+} // namespace omath::opengl_engine

source/engines/source_engine/camera.cpp

@@ -1,35 +0,0 @@
-//
-// Created by Orange on 12/4/2024.
-//
-#include "omath/engines/source_engine/camera.hpp"
-#include "omath/engines/source_engine/formulas.hpp"
-
-namespace omath::source_engine
-{
-
-    Camera::Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-                   const projection::FieldOfView& fov, const float near, const float far)
-        : projection::Camera<Mat4X4, ViewAngles>(position, view_angles, view_port, fov, near, far)
-    {
-    }
-    void Camera::look_at(const Vector3<float>& target)
-    {
-        const float distance = m_origin.distance_to(target);
-        const auto delta = target - m_origin;
-
-        m_view_angles.pitch = PitchAngle::from_radians(std::asin(delta.z / distance));
-        m_view_angles.yaw = -YawAngle::from_radians(std::atan2(delta.y, delta.x));
-        m_view_angles.roll = RollAngle::from_radians(0.f);
-    }
-
-    Mat4X4 Camera::calc_view_matrix() const noexcept
-    {
-        return source_engine::calc_view_matrix(m_view_angles, m_origin);
-    }
-
-    Mat4X4 Camera::calc_projection_matrix() const noexcept
-    {
-        return calc_perspective_projection_matrix(m_field_of_view.as_degrees(), m_view_port.aspect_ratio(),
-                                                  m_near_plane_distance, m_far_plane_distance);
-    }
-} // namespace omath::source_engine

source/engines/source_engine/traits/camera_trait.cpp

@@ -0,0 +1,27 @@
+//
+// Created by Vlad on 8/11/2025.
+//
+#include "omath/engines/source_engine/traits/camera_trait.hpp"
+
+namespace omath::source_engine
+{
+
+    ViewAngles CameraTrait::calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept
+    {
+        const auto distance = cam_origin.distance_to(look_at);
+        const auto delta = cam_origin - look_at;
+
+        return {PitchAngle::from_radians(-std::asin(delta.z / distance)),
+                YawAngle::from_radians(std::atan2(delta.y, delta.x)), RollAngle::from_radians(0.f)};
+    }
+    Mat4X4 CameraTrait::calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
+    {
+        return source_engine::calc_view_matrix(angles, cam_origin);
+    }
+    Mat4X4 CameraTrait::calc_projection_matrix(const projection::FieldOfView& fov,
+                                               const projection::ViewPort& view_port, const float near,
+                                               const float far) noexcept
+    {
+        return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near, far);
+    }
+} // namespace omath::source_engine

source/engines/unity_engine/camera.cpp

@@ -1,27 +0,0 @@
-//
-// Created by Vlad on 3/22/2025.
-//
-#include <omath/engines/unity_engine/camera.hpp>
-#include <omath/engines/unity_engine/formulas.hpp>
-
-namespace omath::unity_engine
-{
-    Camera::Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
-                   const projection::FieldOfView& fov, const float near, const float far)
-        : projection::Camera<Mat4X4, ViewAngles>(position, view_angles, view_port, fov, near, far)
-    {
-    }
-    void Camera::look_at([[maybe_unused]] const Vector3<float>& target)
-    {
-        throw std::runtime_error("Not implemented");
-    }
-    Mat4X4 Camera::calc_view_matrix() const noexcept
-    {
-        return unity_engine::calc_view_matrix(m_view_angles, m_origin);
-    }
-    Mat4X4 Camera::calc_projection_matrix() const noexcept
-    {
-        return calc_perspective_projection_matrix(m_field_of_view.as_degrees(), m_view_port.aspect_ratio(),
-                                                  m_near_plane_distance, m_far_plane_distance);
-    }
-} // namespace omath::unity_engine

source/engines/unity_engine/traits/camera_trait.cpp

@@ -0,0 +1,27 @@
+//
+// Created by Vlad on 8/11/2025.
+//
+#include "omath/engines/unity_engine/traits/camera_trait.hpp"
+
+namespace omath::unity_engine
+{
+
+    ViewAngles CameraTrait::calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept
+    {
+        const auto distance = cam_origin.distance_to(look_at);
+        const auto delta = cam_origin - look_at;
+
+        return {PitchAngle::from_radians(-std::asin(delta.y / distance)),
+                YawAngle::from_radians(std::atan2(delta.z, delta.x)), RollAngle::from_radians(0.f)};
+    }
+    Mat4X4 CameraTrait::calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
+    {
+        return unity_engine::calc_view_matrix(angles, cam_origin);
+    }
+    Mat4X4 CameraTrait::calc_projection_matrix(const projection::FieldOfView& fov,
+                                               const projection::ViewPort& view_port, const float near,
+                                               const float far) noexcept
+    {
+        return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near, far);
+    }
+} // namespace omath::unity_engine

source/matrix.cpp

@@ -1,3 +1,5 @@
+#ifdef OMATH_ENABLE_LEGACY
+
 #include "omath/matrix.hpp"
 #include "omath/angles.hpp"
 #include "omath/vector3.hpp"
@@ -359,3 +361,4 @@ namespace omath
         m_data = nullptr;
     }
 } // namespace omath
+#endif

source/projectile_prediction/proj_pred_engine_legacy.cpp

@@ -1,69 +0,0 @@
-#include "omath/projectile_prediction/proj_pred_engine_legacy.hpp"
-#include <cmath>
-#include <omath/angles.hpp>
-
-namespace omath::projectile_prediction
-{
-    ProjPredEngineLegacy::ProjPredEngineLegacy(const float gravity_constant, const float simulation_time_step,
-                                               const float maximum_simulation_time, const float distance_tolerance)
-        : m_gravity_constant(gravity_constant), m_simulation_time_step(simulation_time_step),
-          m_maximum_simulation_time(maximum_simulation_time), m_distance_tolerance(distance_tolerance)
-    {
-    }
-
-    std::optional<Vector3<float>> ProjPredEngineLegacy::maybe_calculate_aim_point(const Projectile& projectile,
-                                                                                  const Target& target) const
-    {
-        for (float time = 0.f; time < m_maximum_simulation_time; time += m_simulation_time_step)
-        {
-            const auto predicted_target_position = target.predict_position(time, m_gravity_constant);
-
-            const auto projectile_pitch =
-                    maybe_calculate_projectile_launch_pitch_angle(projectile, predicted_target_position);
-
-            if (!projectile_pitch.has_value()) [[unlikely]]
-                continue;
-
-            if (!is_projectile_reached_target(predicted_target_position, projectile, projectile_pitch.value(), time))
-                continue;
-
-            const auto delta2d = (predicted_target_position - projectile.m_origin).length_2d();
-            const auto height = delta2d * std::tan(angles::degrees_to_radians(projectile_pitch.value()));
-
-            return Vector3(predicted_target_position.x, predicted_target_position.y, projectile.m_origin.z + height);
-        }
-        return std::nullopt;
-    }
-
-    std::optional<float> ProjPredEngineLegacy::maybe_calculate_projectile_launch_pitch_angle(
-            const Projectile& projectile, const Vector3<float>& target_position) const noexcept
-    {
-        const auto bullet_gravity = m_gravity_constant * projectile.m_gravity_scale;
-        const auto delta = target_position - projectile.m_origin;
-
-        const auto distance2d = delta.length_2d();
-        const auto distance2d_sqr = distance2d * distance2d;
-        const auto launch_speed_sqr = projectile.m_launch_speed * projectile.m_launch_speed;
-
-        float root = launch_speed_sqr * launch_speed_sqr
-                     - bullet_gravity * (bullet_gravity * distance2d_sqr + 2.0f * delta.z * launch_speed_sqr);
-
-        if (root < 0.0f) [[unlikely]]
-            return std::nullopt;
-
-        root = std::sqrt(root);
-        const float angle = std::atan((launch_speed_sqr - root) / (bullet_gravity * distance2d));
-
-        return angles::radians_to_degrees(angle);
-    }
-
-    bool ProjPredEngineLegacy::is_projectile_reached_target(const Vector3<float>& target_position,
-                                                            const Projectile& projectile, const float pitch,
-                                                            const float time) const noexcept
-    {
-        const auto yaw = projectile.m_origin.view_angle_to(target_position).y;
-        const auto projectile_position = projectile.predict_position(pitch, yaw, time, m_gravity_constant);
-
-        return projectile_position.distance_to(target_position) <= m_distance_tolerance;
-    }
-} // namespace omath::projectile_prediction

source/projectile_prediction/projectile.cpp

@@ -1,22 +0,0 @@
-//
-// Created by Vlad on 6/9/2024.
-//
-
-#include "omath/projectile_prediction/projectile.hpp"
-#include <omath/engines/source_engine/formulas.hpp>
-
-namespace omath::projectile_prediction
-{
-    Vector3<float> Projectile::predict_position(const float pitch, const float yaw, const float time,
-                                                const float gravity) const noexcept
-    {
-        auto current_pos = m_origin
-                           + source_engine::forward_vector({source_engine::PitchAngle::from_degrees(-pitch),
-                                                            source_engine::YawAngle::from_degrees(yaw),
-                                                            source_engine::RollAngle::from_degrees(0)})
-                                     * m_launch_speed * time;
-        current_pos.z -= (gravity * m_gravity_scale) * (time * time) * 0.5f;
-
-        return current_pos;
-    }
-} // namespace omath::projectile_prediction

tests/general/unit_test_line_trace.cpp

@@ -31,10 +31,10 @@ namespace
     // -----------------------------------------------------------------------------
     // Fixture with one canonical right‑angled triangle in the XY plane.
     // -----------------------------------------------------------------------------
-    class lline_tracer_fixture : public ::testing::Test
+    class line_tracer_fixture : public ::testing::Test
     {
     protected:
-        lline_tracer_fixture() :
+        line_tracer_fixture() :
             triangle({0.f, 0.f, 0.f}, {1.f, 0.f, 0.f}, {0.f, 1.f, 0.f})
         {
         }
@@ -51,7 +51,7 @@ namespace
         bool expected_clear; // true => segment does NOT hit the triangle
     };
 
-    class CanTraceLineParam : public lline_tracer_fixture,
+    class CanTraceLineParam : public line_tracer_fixture,
                               public ::testing::WithParamInterface<TraceCase>
     {
     };
@@ -79,7 +79,7 @@ namespace
     // -----------------------------------------------------------------------------
     // Validate that the reported hit point is correct for a genuine intersection.
     // -----------------------------------------------------------------------------
-    TEST_F(lline_tracer_fixture, HitPointCorrect)
+    TEST_F(line_tracer_fixture, HitPointCorrect)
     {
         constexpr Ray ray{{0.3f, 0.3f, -1.f}, {0.3f, 0.3f, 1.f}};
         constexpr Vec3 expected{0.3f, 0.3f, 0.f};
@@ -92,7 +92,7 @@ namespace
     // -----------------------------------------------------------------------------
     // Triangle far beyond the ray should not block.
     // -----------------------------------------------------------------------------
-    TEST_F(lline_tracer_fixture, DistantTriangleClear)
+    TEST_F(line_tracer_fixture, DistantTriangleClear)
     {
         constexpr Ray short_ray{{0.f, 0.f, 0.f}, {0.f, 0.f, 1.f}};
         constexpr Triangle<Vec3> distant{{1000.f, 1000.f, 1000.f},

tests/general/unit_test_mat.cpp

@@ -167,8 +167,8 @@ TEST_F(unit_test_mat, StaticMethod_ToScreenMat)
 TEST_F(unit_test_mat, Method_At_OutOfRange)
 {
 #if !defined(NDEBUG) && defined(OMATH_SUPRESS_SAFETY_CHECKS)
-    EXPECT_THROW(std::ignore = m2.At(2, 0), std::out_of_range);
-    EXPECT_THROW(std::ignore = m2.At(0, 2), std::out_of_range);
+    EXPECT_THROW(std::ignore = m2.at(2, 0), std::out_of_range);
+    EXPECT_THROW(std::ignore = m2.at(0, 2), std::out_of_range);
 #endif
 }
 

tests/general/unit_test_matrix.cpp

@@ -1,6 +1,9 @@
 //
 // Created by vlad on 5/18/2024.
 //
+
+#ifdef OMATH_ENABLE_LEGACY
+
 #include <gtest/gtest.h>
 #include <omath/matrix.hpp>
 #include "omath/vector3.hpp"
@@ -177,4 +180,5 @@ TEST_F(UnitTestMatrix, AssignmentOperator_Move)
     EXPECT_FLOAT_EQ(m3.at(0, 0), 1.0f);
     EXPECT_EQ(m2.row_count(), 0);  // m2 should be empty after the move
     EXPECT_EQ(m2.columns_count(), 0);
-}
+}
+#endif

tests/general/unit_test_vector2.cpp

@@ -346,6 +346,28 @@ TEST_F(UnitTestVector2, NegationOperator_ZeroVector)
     EXPECT_FLOAT_EQ(result.y, -0.0f);
 }
 
+TEST_F(UnitTestVector2, LessOperator)
+{
+    EXPECT_TRUE(v1 < v2);
+}
+
+TEST_F(UnitTestVector2, GreaterOperator)
+{
+    EXPECT_TRUE(v2 > v1);
+}
+TEST_F(UnitTestVector2, LessEqualOperator)
+{
+    EXPECT_TRUE(omath::Vector2<float>{} <= omath::Vector2<float>{});
+    EXPECT_TRUE(omath::Vector2<float>{} <= omath::Vector2(1.f, 1.f));
+}
+
+TEST_F(UnitTestVector2, GreaterEqualOperator)
+{
+    EXPECT_TRUE(omath::Vector2<float>{} >= omath::Vector2<float>{});
+    EXPECT_TRUE(omath::Vector2(1.f, 1.f) >= omath::Vector2<float>{});
+}
+
+
 // Static assertions (compile-time checks)
 static_assert(Vector2(1.0f, 2.0f).length_sqr() == 5.0f, "LengthSqr should be 5");
 static_assert(Vector2(1.0f, 2.0f).dot(Vector2(4.0f, 5.0f)) == 14.0f, "Dot product should be 14");

tests/general/unit_test_vector3.cpp

@@ -402,6 +402,27 @@ TEST_F(UnitTestVector3, IsPerpendicular)
     EXPECT_FALSE(Vector3(0.0f, 0.0f, 0.0f).is_perpendicular({0.0f, 0.0f, 1.0f}));
 }
 
+TEST_F(UnitTestVector3, LessOperator)
+{
+    EXPECT_TRUE(v1 < v2);
+}
+
+TEST_F(UnitTestVector3, GreaterOperator)
+{
+    EXPECT_TRUE(v2 > v1);
+}
+TEST_F(UnitTestVector3, LessEqualOperator)
+{
+    EXPECT_TRUE(omath::Vector3<float>{} <= omath::Vector3<float>{});
+    EXPECT_TRUE(omath::Vector3<float>{} <= omath::Vector3(1.f, 1.f, 1.f));
+}
+
+TEST_F(UnitTestVector3, GreaterEqualOperator)
+{
+    EXPECT_TRUE(omath::Vector3<float>{} >= omath::Vector3<float>{});
+    EXPECT_TRUE(omath::Vector3(1.f, 1.f, 1.f) >= omath::Vector3<float>{});
+}
+
 // Static assertions (compile-time checks)
 static_assert(Vector3(1.0f, 2.0f, 3.0f).length_sqr() == 14.0f, "LengthSqr should be 14");
 static_assert(Vector3(1.0f, 2.0f, 3.0f).dot(Vector3(4.0f, 5.0f, 6.0f)) == 32.0f, "Dot product should be 32");

tests/general/unit_test_vector4.cpp

@@ -215,3 +215,23 @@ TEST_F(UnitTestVector4, Clamp)
     EXPECT_FLOAT_EQ(v3.z, 2.5f);
     EXPECT_FLOAT_EQ(v3.w, 4.0f); // w is not clamped in this method
 }
+TEST_F(UnitTestVector4, LessOperator)
+{
+    EXPECT_TRUE(v1 < v2);
+}
+
+TEST_F(UnitTestVector4, GreaterOperator)
+{
+    EXPECT_TRUE(v2 > v1);
+}
+TEST_F(UnitTestVector4, LessEqualOperator)
+{
+    EXPECT_TRUE(omath::Vector4<float>{} <= omath::Vector4<float>{});
+    EXPECT_TRUE(omath::Vector4<float>{} <= omath::Vector4(1.f, 1.f, 1.f, 1.f));
+}
+
+TEST_F(UnitTestVector4, GreaterEqualOperator)
+{
+    EXPECT_TRUE(omath::Vector4<float>{} >= omath::Vector4<float>{});
+    EXPECT_TRUE(omath::Vector4(1.f, 1.f, 1.f, 1.f) >= omath::Vector4<float>{});
+}