From 8e411771c2dd0d5bb6cea786160da8f128cc57d9 Mon Sep 17 00:00:00 2001
From: Orange <orange-cpp@yandex.ru>
Date: Tue, 15 Jul 2025 11:48:27 +0300
Subject: [PATCH 1/2] Adds option to enable legacy classes

Introduces a CMake option to enable legacy classes,
allowing for backward compatibility with older code.
This ensures that older codebases can still function
while new development can utilize updated classes.
---
 CMakeLists.txt           | 6 ++++++
 include/omath/matrix.hpp | 4 ++++
 source/matrix.cpp        | 3 +++
 3 files changed, 13 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1d5891f..af67dd5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -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}"
diff --git a/include/omath/matrix.hpp b/include/omath/matrix.hpp
index 1e2df87..a8dc520 100644
--- a/include/omath/matrix.hpp
+++ b/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
diff --git a/source/matrix.cpp b/source/matrix.cpp
index 428aaa8..322ea96 100644
--- a/source/matrix.cpp
+++ b/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

From 1aa62cb39663e0bad936c3f1b9bf58c5e979c7b6 Mon Sep 17 00:00:00 2001
From: Orange <orange-cpp@yandex.ru>
Date: Tue, 15 Jul 2025 11:51:14 +0300
Subject: [PATCH 2/2] Enables legacy code compilation

The changes encapsulate the matrix tests within an `#ifdef` block, allowing conditional compilation based on whether `OMATH_ENABLE_LEGACY` is defined. This enables the legacy code to be compiled only when needed.
---
 tests/general/unit_test_matrix.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tests/general/unit_test_matrix.cpp b/tests/general/unit_test_matrix.cpp
index ec56cbc..b7543c6 100644
--- a/tests/general/unit_test_matrix.cpp
+++ b/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);
-}
\ No newline at end of file
+}
+#endif