Merge pull request #116 from luadebug/wasm

Add WASM support

.github/workflows/cmake-multi-platform.yml

@@ -1,4 +1,4 @@
-name: Omath CI (Arch Linux / Windows)
+name: Omath CI
 
 on:
   push:
@@ -12,11 +12,11 @@ concurrency:
 
 
 ##############################################################################
-# 1)  ARCH LINUX  –  Clang / Ninja
+# 1)  Arch Linux  –  Clang / Ninja
 ##############################################################################
 jobs:
   arch-build-and-test:
-    name: Arch Linux (Clang)
+    name: Arch Linux (Clang) (x64-linux)
     runs-on: ubuntu-latest
     container: archlinux:latest
     env:
@@ -56,7 +56,7 @@ jobs:
   # 2)  Windows  –  MSVC / Ninja
   ##############################################################################
   windows-build-and-test:
-    name: Windows (MSVC)
+    name: Windows (MSVC) (x64-windows)
     runs-on: windows-latest
     env:
       OMATH_BUILD_VIA_VCPKG: ON
@@ -89,7 +89,7 @@ jobs:
   # 3)  macOS  –  AppleClang / Ninja
   ##############################################################################
   macosx-build-and-test:
-    name: macOS (AppleClang)
+    name: macOS (AppleClang) (arm64-osx)
     runs-on: macOS-latest
     env:
       VCPKG_ROOT: ${{ github.workspace }}/vcpkg
@@ -120,3 +120,190 @@ jobs:
       - name: Run unit_tests
         shell: bash
         run: ./out/Release/unit_tests
+
+  ##############################################################################
+  # 4)  iOS  –  AppleClang / Xcode / arm64-ios
+  ##############################################################################
+  ios-build:
+    name: iOS (AppleClang) (arm64-ios)
+    runs-on: macOS-latest
+    env:
+      VCPKG_ROOT: ${{ github.workspace }}/vcpkg
+    steps:
+      - name: Install CMake tooling
+        shell: bash
+        run: |
+          brew install cmake ninja
+
+      - name: Checkout repository (with sub-modules)
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Set up vcpkg
+        shell: bash
+        run: |
+          git clone https://github.com/microsoft/vcpkg "$VCPKG_ROOT"
+          cd "$VCPKG_ROOT"
+          ./bootstrap-vcpkg.sh
+
+      - name: Configure (cmake --preset)
+        shell: bash
+        run: |
+          cmake --preset ios-release-vcpkg \
+            -DVCPKG_INSTALL_OPTIONS="--allow-unsupported" \
+            -DOMATH_BUILD_TESTS=ON \
+            -DOMATH_BUILD_BENCHMARK=OFF \
+            -DVCPKG_MANIFEST_FEATURES="imgui;tests"
+
+      - name: Build
+        shell: bash
+        run: |
+          cmake --build cmake-build/build/ios-release-vcpkg --config Release --target unit_tests omath
+
+  ##############################################################################
+  # 5)  FreeBSD  –  Clang / Ninja
+  ##############################################################################
+  freebsd-build-and-test:
+    name: FreeBSD (Clang) (x64-freebsd)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository (with sub-modules)
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Build and Test
+        uses: vmactions/freebsd-vm@v1
+        with:
+          usesh: true
+          sync: sshfs
+          mem: 12288
+          copyback: false
+          prepare: pkg install -y git curl zip unzip gmake llvm gsed bash perl5 openssl 7-zip coreutils cmake ninja pkgconf patchelf
+          run: |
+            git config --global --add safe.directory `pwd`
+            # Build vcpkg in /tmp to avoid sshfs timestamp sync issues
+            # This prevents PCH timestamp mismatches during parallel builds
+            export VCPKG_ROOT=/tmp/vcpkg
+            rm -rf "$VCPKG_ROOT"
+            git clone https://github.com/microsoft/vcpkg "$VCPKG_ROOT"
+            cd "$VCPKG_ROOT"
+            # Bootstrap vcpkg - it will build from source on FreeBSD
+            # Building in /tmp avoids sshfs timestamp issues that break PCH
+            ./bootstrap-vcpkg.sh
+            cd -
+            export VCPKG_FORCE_SYSTEM_BINARIES=0
+            # VCPKG_ROOT is set to /tmp/vcpkg, which CMake will use via the preset
+            cmake --preset freebsd-release-vcpkg -DOMATH_BUILD_TESTS=ON -DOMATH_BUILD_BENCHMARK=OFF -DVCPKG_MANIFEST_FEATURES="imgui;avx2;tests" -DVCPKG_INSTALL_OPTIONS="--allow-unsupported"
+            cmake --build cmake-build/build/freebsd-release-vcpkg --target unit_tests omath
+            ./out/Release/unit_tests
+
+  ##############################################################################
+  # 5)  Android NDK  –  Clang / Ninja / arm64-android
+  ##############################################################################
+  android-build-and-test:
+    name: Android NDK (arm64-android)
+    runs-on: ubuntu-latest
+    env:
+      VCPKG_ROOT: ${{ github.workspace }}/vcpkg
+      ANDROID_NDK_HOME: ${{ github.workspace }}/android-ndk
+    steps:
+      - name: Checkout repository (with sub-modules)
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Android NDK
+        shell: bash
+        run: |
+          NDK_VERSION="r28c"
+          NDK_ZIP="android-ndk-${NDK_VERSION}-linux.zip"
+          wget -q "https://dl.google.com/android/repository/${NDK_ZIP}"
+          unzip -q "${NDK_ZIP}" -d "${{ github.workspace }}"
+          mv "${{ github.workspace }}/android-ndk-${NDK_VERSION}" "$ANDROID_NDK_HOME"
+          rm "${NDK_ZIP}"
+          echo "ANDROID_NDK_HOME=${ANDROID_NDK_HOME}" >> $GITHUB_ENV
+          echo "Android NDK installed at: ${ANDROID_NDK_HOME}"
+          ls -la "${ANDROID_NDK_HOME}" | head -5
+
+      - name: Install basic tool-chain
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y ninja-build cmake
+
+      - name: Set up vcpkg
+        shell: bash
+        run: |
+          git clone https://github.com/microsoft/vcpkg "$VCPKG_ROOT"
+          cd "$VCPKG_ROOT"
+          ./bootstrap-vcpkg.sh
+
+      - name: Configure (cmake --preset)
+        shell: bash
+        run: |
+          cmake --preset android-release-vcpkg \
+            -DVCPKG_INSTALL_OPTIONS="--allow-unsupported" \
+            -DOMATH_BUILD_TESTS=ON \
+            -DOMATH_BUILD_BENCHMARK=OFF \
+            -DVCPKG_MANIFEST_FEATURES="imgui;tests"
+
+      - name: Build
+        shell: bash
+        run: |
+          cmake --build cmake-build/build/android-release-vcpkg --target unit_tests omath
+
+  ##############################################################################
+  # 6)  WebAssembly (Emscripten)  –  Clang / Ninja / wasm32-emscripten
+  ##############################################################################
+  wasm-build-and-test:
+    name: WebAssembly (Emscripten) (wasm32-emscripten)
+    runs-on: ubuntu-latest
+    env:
+      VCPKG_ROOT: ${{ github.workspace }}/vcpkg
+    steps:
+      - name: Checkout repository (with sub-modules)
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install basic tool-chain
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y ninja-build
+
+      - name: Setup Emscripten
+        uses: mymindstorm/setup-emsdk@v14
+        with:
+          version: 'latest'
+
+      - name: Verify Emscripten
+        shell: bash
+        run: |
+          echo "EMSDK=$EMSDK"
+          emcc --version
+          # Verify toolchain file exists
+          ls -la "$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
+
+      - name: Set up vcpkg
+        shell: bash
+        run: |
+          git clone https://github.com/microsoft/vcpkg "$VCPKG_ROOT"
+          cd "$VCPKG_ROOT"
+          ./bootstrap-vcpkg.sh
+
+      - name: Configure (cmake --preset)
+        shell: bash
+        run: |
+          cmake --preset wasm-release-vcpkg \
+            -DVCPKG_INSTALL_OPTIONS="--allow-unsupported" \
+            -DOMATH_BUILD_TESTS=ON \
+            -DOMATH_BUILD_BENCHMARK=OFF \
+            -DVCPKG_MANIFEST_FEATURES="imgui;tests"
+
+      - name: Build
+        shell: bash
+        run: |
+          cmake --build cmake-build/build/wasm-release-vcpkg --target unit_tests omath

.idea/editor.xml

@@ -201,7 +201,7 @@
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppStaticDataMemberInUnnamedStruct/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppStaticSpecifierOnAnonymousNamespaceMember/@EntryIndexedValue" value="SUGGESTION" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppStringLiteralToCharPointerConversion/@EntryIndexedValue" value="WARNING" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppTabsAreDisallowed/@EntryIndexedValue" value="DO_NOT_SHOW" type="string" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppTabsAreDisallowed/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppTemplateArgumentsCanBeDeduced/@EntryIndexedValue" value="HINT" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppTemplateParameterNeverUsed/@EntryIndexedValue" value="HINT" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppTemplateParameterShadowing/@EntryIndexedValue" value="WARNING" type="string" />
@@ -215,7 +215,7 @@
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnmatchedPragmaEndRegionDirective/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnmatchedPragmaRegionDirective/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnnamedNamespaceInHeaderFile/@EntryIndexedValue" value="WARNING" type="string" />
-    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnnecessaryWhitespace/@EntryIndexedValue" value="DO_NOT_SHOW" type="string" />
+    <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnnecessaryWhitespace/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnsignedZeroComparison/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUnusedIncludeDirective/@EntryIndexedValue" value="WARNING" type="string" />
     <option name="/Default/CodeInspection/Highlighting/InspectionSeverities/=CppUseAlgorithmWithCount/@EntryIndexedValue" value="SUGGESTION" type="string" />

CMakeLists.txt

@@ -35,6 +35,8 @@ if (VCPKG_MANIFEST_FEATURES)
             set(OMATH_BUILD_TESTS ON)
         elseif (omath_feature STREQUAL "benchmark")
             set(OMATH_BUILD_BENCHMARK ON)
+        elseif (omath_feature STREQUAL "examples")
+            set(OMATH_BUILD_EXAMPLES ON)
         endif ()
 
     endforeach ()

CMakePresets.json

@@ -25,7 +25,7 @@
         "OMATH_BUILD_VIA_VCPKG": "ON",
         "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
         "VCPKG_INSTALLED_DIR": "${sourceDir}/cmake-build/vcpkg_installed",
-        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2"
+        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2;examples"
       }
     },
     {
@@ -38,7 +38,7 @@
     },
     {
       "name": "windows-debug-vcpkg",
-      "displayName": "Debug",
+      "displayName": "Windows Debug Vcpkg",
       "inherits": "windows-base-vcpkg",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Debug"
@@ -46,7 +46,7 @@
     },
     {
       "name": "windows-release-vcpkg",
-      "displayName": "Release",
+      "displayName": "Windows Release Vcpkg",
       "inherits": "windows-base-vcpkg",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Release",
@@ -144,7 +144,7 @@
         "OMATH_BUILD_VIA_VCPKG": "ON",
         "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
         "VCPKG_INSTALLED_DIR": "${sourceDir}/cmake-build/vcpkg_installed",
-        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2"
+        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2;examples"
       }
     },
     {
@@ -157,7 +157,7 @@
     },
     {
       "name": "darwin-debug-vcpkg",
-      "displayName": "Darwin Debug",
+      "displayName": "Darwin Debug Vcpkg",
       "inherits": "darwin-base-vcpkg",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Debug"
@@ -173,11 +173,198 @@
     },
     {
       "name": "darwin-release-vcpkg",
-      "displayName": "Darwin Release",
+      "displayName": "Darwin Release Vcpkg",
       "inherits": "darwin-base-vcpkg",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Release"
       }
+    },
+    {
+  "name": "ios-base",
+  "hidden": true,
+  "generator": "Ninja",
+  "binaryDir": "${sourceDir}/cmake-build/build/${presetName}",
+  "cacheVariables": {
+    "CMAKE_SYSTEM_NAME": "iOS",
+    "CMAKE_OSX_DEPLOYMENT_TARGET": "18.5",
+    "CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED": "NO",
+    "CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED": "NO"
+  },
+  "condition": {
+    "type": "equals",
+    "lhs": "${hostSystemName}",
+    "rhs": "Darwin"
+  }
+},
+{
+  "name": "ios-base-vcpkg",
+  "hidden": true,
+  "inherits": "ios-base",
+  "cacheVariables": {
+    "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
+    "VCPKG_TARGET_TRIPLET": "arm64-ios",
+    "VCPKG_HOST_TRIPLET": "arm64-osx"
+  }
+},
+{
+  "name": "ios-release-vcpkg",
+  "displayName": "iOS Release (vcpkg)",
+  "inherits": "ios-base-vcpkg"
+},
+    {
+      "name": "freebsd-base",
+      "hidden": true,
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/cmake-build/build/${presetName}",
+      "installDir": "${sourceDir}/cmake-build/install/${presetName}",
+      "cacheVariables": {
+        "CMAKE_CXX_COMPILER": "clang++",
+        "CMAKE_MAKE_PROGRAM": "ninja"
+      },
+      "condition": {
+        "type": "equals",
+        "lhs": "${hostSystemName}",
+        "rhs": "FreeBSD"
+      }
+    },
+    {
+      "name": "freebsd-base-vcpkg",
+      "hidden": true,
+      "inherits": "freebsd-base",
+      "cacheVariables": {
+        "OMATH_BUILD_VIA_VCPKG": "ON",
+        "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
+        "VCPKG_INSTALLED_DIR": "${sourceDir}/cmake-build/vcpkg_installed",
+        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2"
+      }
+    },
+    {
+      "name": "freebsd-debug",
+      "displayName": "FreeBSD Debug",
+      "inherits": "freebsd-base",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    },
+    {
+      "name": "freebsd-debug-vcpkg",
+      "displayName": "FreeBSD Debug Vcpkg",
+      "inherits": "freebsd-base-vcpkg",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    },
+    {
+      "name": "freebsd-release",
+      "displayName": "FreeBSD Release",
+      "inherits": "freebsd-base",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
+    },
+    {
+      "name": "freebsd-release-vcpkg",
+      "displayName": "FreeBSD Release Vcpkg",
+      "inherits": "freebsd-base-vcpkg",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
+    },
+    {
+      "name": "android-base",
+      "hidden": true,
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/cmake-build/build/${presetName}",
+      "installDir": "${sourceDir}/cmake-build/install/${presetName}",
+      "cacheVariables": {
+        "CMAKE_SYSTEM_NAME": "Android",
+        "CMAKE_SYSTEM_VERSION": "24",
+        "CMAKE_ANDROID_ARCH_ABI": "arm64-v8a",
+        "CMAKE_ANDROID_NDK": "$env{ANDROID_NDK_HOME}",
+        "CMAKE_MAKE_PROGRAM": "ninja"
+      }
+    },
+    {
+      "name": "android-base-vcpkg",
+      "hidden": true,
+      "inherits": "android-base",
+      "cacheVariables": {
+        "OMATH_BUILD_VIA_VCPKG": "ON",
+        "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
+        "VCPKG_INSTALLED_DIR": "${sourceDir}/cmake-build/vcpkg_installed",
+        "VCPKG_TARGET_TRIPLET": "arm64-android",
+        "VCPKG_MANIFEST_FEATURES": "tests;imgui"
+      }
+    },
+    {
+      "name": "android-debug",
+      "displayName": "Android Debug",
+      "inherits": "android-base",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    },
+    {
+      "name": "android-debug-vcpkg",
+      "displayName": "Android Debug Vcpkg",
+      "inherits": "android-base-vcpkg",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    },
+    {
+      "name": "android-release",
+      "displayName": "Android Release",
+      "inherits": "android-base",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
+    },
+    {
+      "name": "android-release-vcpkg",
+      "displayName": "Android Release Vcpkg",
+      "inherits": "android-base-vcpkg",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
+    },
+    {
+      "name": "wasm-base",
+      "hidden": true,
+      "generator": "Ninja",
+      "binaryDir": "${sourceDir}/cmake-build/build/${presetName}",
+      "installDir": "${sourceDir}/cmake-build/install/${presetName}",
+      "cacheVariables": {
+        "CMAKE_MAKE_PROGRAM": "ninja"
+      }
+    },
+    {
+      "name": "wasm-base-vcpkg",
+      "hidden": true,
+      "inherits": "wasm-base",
+      "cacheVariables": {
+        "OMATH_BUILD_VIA_VCPKG": "ON",
+        "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
+        "VCPKG_CHAINLOAD_TOOLCHAIN_FILE": "$env{EMSDK}/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake",
+        "VCPKG_INSTALLED_DIR": "${sourceDir}/cmake-build/vcpkg_installed",
+        "VCPKG_TARGET_TRIPLET": "wasm32-emscripten"
+      }
+    },
+    {
+      "name": "wasm-debug-vcpkg",
+      "displayName": "WASM Debug Vcpkg",
+      "inherits": "wasm-base-vcpkg",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug"
+      }
+    },
+    {
+      "name": "wasm-release-vcpkg",
+      "displayName": "WASM Release Vcpkg",
+      "inherits": "wasm-base-vcpkg",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release"
+      }
     }
   ]
 }

README.md

@@ -106,6 +106,10 @@ if (auto screen = camera.world_to_screen(world_position)) {
 
 ![TF2 Preview]
 
+<br>
+
+![OpenGL Preview]
+
 <br>
 <br>
 
@@ -135,6 +139,7 @@ if (auto screen = camera.world_to_screen(world_position)) {
 [BO2 Preview]: docs/images/showcase/cod_bo2.png
 [CS2 Preview]: docs/images/showcase/cs2.jpeg
 [TF2 Preview]: docs/images/showcase/tf2.jpg
+[OpenGL Preview]: docs/images/showcase/opengl.png
 <!----------------------------------{ Buttons }--------------------------------->
 [QUICKSTART]: docs/getting_started.md
 [INSTALL]: INSTALL.md

examples/CMakeLists.txt

@@ -1,9 +1,32 @@
 project(examples)
 
 add_executable(example_projection_matrix_builder example_proj_mat_builder.cpp)
-set_target_properties(example_projection_matrix_builder PROPERTIES CXX_STANDARD 26)
+set_target_properties(example_projection_matrix_builder PROPERTIES
+        CXX_STANDARD 26
+        ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+        LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+        RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+)
 target_link_libraries(example_projection_matrix_builder PRIVATE omath::omath)
 
 add_executable(example_signature_scan example_signature_scan.cpp)
-set_target_properties(example_signature_scan PROPERTIES CXX_STANDARD 26)
+set_target_properties(example_signature_scan PROPERTIES
-target_link_libraries(example_signature_scan PRIVATE omath::omath)
+        CXX_STANDARD 26
+        ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+        LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+        RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+)
+target_link_libraries(example_signature_scan PRIVATE omath::omath)
+
+
+add_executable(example_glfw3 example_glfw3.cpp)
+set_target_properties(example_glfw3 PROPERTIES CXX_STANDARD 26
+        ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+        LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+
+        RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
+)
+
+find_package(GLEW REQUIRED)
+find_package(glfw3 CONFIG REQUIRED)
+target_link_libraries(example_glfw3 PRIVATE omath::omath GLEW::GLEW glfw)

examples/example_glfw3.cpp

@@ -0,0 +1,339 @@
+// main.cpp
+#include <cstdint>
+#include <iostream>
+#include <vector>
+
+// --- OpenGL / windowing ---
+#include <GL/glew.h> // GLEW must come before GLFW
+#include <GLFW/glfw3.h>
+
+// --- your math / engine stuff ---
+#include "omath/3d_primitives/mesh.hpp"
+#include "omath/engines/opengl_engine/camera.hpp"
+#include "omath/engines/opengl_engine/constants.hpp"
+#include "omath/engines/opengl_engine/mesh.hpp"
+#include "omath/linear_algebra/vector3.hpp"
+
+using omath::Vector3;
+
+// ---------------- TYPE ALIASES (ADAPT TO YOUR LIB) ----------------
+
+// Your 4x4 matrix type
+using Mat4x4 = omath::opengl_engine::Mat4X4;
+
+// Rotation angles for the Mesh
+using RotationAngles = omath::opengl_engine::ViewAngles;
+
+// For brevity, alias the templates instantiated with your types
+using VertexType = omath::primitives::Vertex<Vector3<float>>;
+using CubeMesh = omath::opengl_engine::Mesh;
+using MyCamera = omath::opengl_engine::Camera;
+
+// ---------------- SHADERS ----------------
+
+static const char* vertexShaderSource = R"(
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec3 aUv;
+
+uniform mat4 uMVP;
+uniform mat4 uModel;
+
+out vec3 vNormal;
+out vec3 vUv;
+
+void main() {
+    vNormal = aNormal;
+    vUv = aUv;
+    gl_Position = uMVP * uModel * vec4(aPos, 1.0);
+}
+)";
+
+static const char* fragmentShaderSource = R"(
+#version 330 core
+in vec3 vNormal;
+in vec3 vUv;
+
+out vec4 FragColor;
+
+void main() {
+    vec3 baseColor = normalize(abs(vNormal));
+    FragColor = vec4(baseColor, 1.0);
+}
+)";
+
+GLuint compileShader(GLenum type, const char* src)
+{
+    GLuint shader = glCreateShader(type);
+    glShaderSource(shader, 1, &src, nullptr);
+    glCompileShader(shader);
+
+    GLint ok = GL_FALSE;
+    glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
+    if (!ok)
+    {
+        char log[1024];
+        glGetShaderInfoLog(shader, sizeof(log), nullptr, log);
+        std::cerr << "Shader compile error: " << log << std::endl;
+    }
+    return shader;
+}
+
+GLuint createShaderProgram()
+{
+    GLuint vs = compileShader(GL_VERTEX_SHADER, vertexShaderSource);
+    GLuint fs = compileShader(GL_FRAGMENT_SHADER, fragmentShaderSource);
+
+    GLuint prog = glCreateProgram();
+    glAttachShader(prog, vs);
+    glAttachShader(prog, fs);
+    glLinkProgram(prog);
+
+    GLint ok = GL_FALSE;
+    glGetProgramiv(prog, GL_LINK_STATUS, &ok);
+    if (!ok)
+    {
+        char log[1024];
+        glGetProgramInfoLog(prog, sizeof(log), nullptr, log);
+        std::cerr << "Program link error: " << log << std::endl;
+    }
+
+    glDeleteShader(vs);
+    glDeleteShader(fs);
+    return prog;
+}
+
+void framebuffer_size_callback(GLFWwindow* /*window*/, int w, int h)
+{
+    glViewport(0, 0, w, h);
+}
+
+// ---------------- MAIN ----------------
+
+int main()
+{
+    // ---------- GLFW init ----------
+    if (!glfwInit())
+    {
+        std::cerr << "Failed to init GLFW\n";
+        return -1;
+    }
+
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+#ifdef __APPLE__
+    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
+#endif
+
+    const int SCR_WIDTH = 800;
+    const int SCR_HEIGHT = 600;
+
+    GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "omath cube + camera (GLEW)", nullptr, nullptr);
+    if (!window)
+    {
+        std::cerr << "Failed to create GLFW window\n";
+        glfwTerminate();
+        return -1;
+    }
+
+    glfwMakeContextCurrent(window);
+    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+
+    // ---------- GLEW init ----------
+    glewExperimental = GL_TRUE;
+    GLenum glewErr = glewInit();
+    if (glewErr != GLEW_OK)
+    {
+        std::cerr << "Failed to initialize GLEW: " << reinterpret_cast<const char*>(glewGetErrorString(glewErr))
+                  << "\n";
+        glfwTerminate();
+        return -1;
+    }
+
+    // ---------- GL state ----------
+    glEnable(GL_DEPTH_TEST);
+
+    // Face culling
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_BACK); // cull back faces
+    glFrontFace(GL_CCW); // counter-clockwise is front
+
+    // ---------- Build Cube Mesh (CPU side) ----------
+    std::vector<VertexType> vbo;
+    vbo.reserve(8);
+
+    Vector3<float> p000{-0.5f, -0.5f, -0.5f};
+    Vector3<float> p001{-0.5f, -0.5f, 0.5f};
+    Vector3<float> p010{-0.5f, 0.5f, -0.5f};
+    Vector3<float> p011{-0.5f, 0.5f, 0.5f};
+    Vector3<float> p100{0.5f, -0.5f, -0.5f};
+    Vector3<float> p101{0.5f, -0.5f, 0.5f};
+    Vector3<float> p110{0.5f, 0.5f, -0.5f};
+    Vector3<float> p111{0.5f, 0.5f, 0.5f};
+
+    VertexType v0{p000, Vector3<float>{-1, -1, -1}, omath::Vector2<float>{0, 0}};
+    VertexType v1{p001, Vector3<float>{-1, -1, 1}, omath::Vector2<float>{0, 1}};
+    VertexType v2{p010, Vector3<float>{-1, 1, -1}, omath::Vector2<float>{1, 0}};
+    VertexType v3{p011, Vector3<float>{-1, 1, 1}, omath::Vector2<float>{1, 1}};
+    VertexType v4{p100, Vector3<float>{1, -1, -1}, omath::Vector2<float>{0, 0}};
+    VertexType v5{p101, Vector3<float>{1, -1, 1}, omath::Vector2<float>{0, 1}};
+    VertexType v6{p110, Vector3<float>{1, 1, -1}, omath::Vector2<float>{1, 0}};
+    VertexType v7{p111, Vector3<float>{1, 1, 1}, omath::Vector2<float>{1, 1}};
+
+    vbo.push_back(v0); // 0
+    vbo.push_back(v1); // 1
+    vbo.push_back(v2); // 2
+    vbo.push_back(v3); // 3
+    vbo.push_back(v4); // 4
+    vbo.push_back(v5); // 5
+    vbo.push_back(v6); // 6
+    vbo.push_back(v7); // 7
+
+    using Idx = Vector3<std::uint32_t>;
+    std::vector<Idx> ebo;
+    ebo.reserve(12);
+
+    // front (z+)
+    ebo.emplace_back(1, 5, 7);
+    ebo.emplace_back(1, 7, 3);
+
+    // back (z-)
+    ebo.emplace_back(0, 2, 6);
+    ebo.emplace_back(0, 6, 4);
+
+    // left (x-)
+    ebo.emplace_back(0, 1, 3);
+    ebo.emplace_back(0, 3, 2);
+
+    // right (x+)
+    ebo.emplace_back(4, 6, 7);
+    ebo.emplace_back(4, 7, 5);
+
+    // bottom (y-)
+    ebo.emplace_back(0, 4, 5);
+    ebo.emplace_back(0, 5, 1);
+
+    // top (y+)
+    ebo.emplace_back(2, 3, 7);
+    ebo.emplace_back(2, 7, 6);
+
+    CubeMesh cube{std::move(vbo), std::move(ebo)};
+    cube.set_origin({0.f, 0.f, 0.f});
+    cube.set_scale({2.f, 2.f, 2.f});
+    cube.set_rotation(RotationAngles{});
+
+    // ---------- OpenGL buffers ----------
+    GLuint VAO = 0, VBO = 0, EBO_GL = 0;
+    glGenVertexArrays(1, &VAO);
+    glGenBuffers(1, &VBO);
+    glGenBuffers(1, &EBO_GL);
+
+    glBindVertexArray(VAO);
+
+    // upload vertex buffer
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glBufferData(GL_ARRAY_BUFFER, cube.m_vertex_buffer.size() * sizeof(VertexType), cube.m_vertex_buffer.data(),
+                 GL_STATIC_DRAW);
+
+    // flatten EBO to GL indices
+    std::vector<GLuint> flatIndices;
+    flatIndices.reserve(cube.m_vertex_array_object.size() * 3);
+    for (const auto& tri : cube.m_vertex_array_object)
+    {
+        flatIndices.push_back(tri.x);
+        flatIndices.push_back(tri.y);
+        flatIndices.push_back(tri.z);
+    }
+
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO_GL);
+    glBufferData(GL_ELEMENT_ARRAY_BUFFER, flatIndices.size() * sizeof(GLuint), flatIndices.data(), GL_STATIC_DRAW);
+
+    // vertex layout: position / normal / uv (each Vector3<float>)
+    glEnableVertexAttribArray(0);
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(VertexType), (void*)offsetof(VertexType, position));
+
+    glEnableVertexAttribArray(1);
+    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(VertexType), (void*)offsetof(VertexType, normal));
+
+    glEnableVertexAttribArray(2);
+    glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(VertexType), (void*)offsetof(VertexType, uv));
+
+    glBindVertexArray(0);
+
+    // ---------- Camera setup ----------
+    omath::projection::ViewPort viewPort{static_cast<float>(SCR_WIDTH), static_cast<float>(SCR_HEIGHT)};
+
+    Vector3<float> camPos{0.f, 0.f, 3.f};
+
+    float nearPlane = 0.1f;
+    float farPlane = 100.f;
+    auto fov = omath::projection::FieldOfView::from_degrees(90.f);
+
+    MyCamera camera{camPos, {}, viewPort, fov, nearPlane, farPlane};
+
+    // ---------- Shader ----------
+    GLuint shaderProgram = createShaderProgram();
+    GLint uMvpLoc = glGetUniformLocation(shaderProgram, "uMVP");
+    GLint uModel = glGetUniformLocation(shaderProgram, "uModel");
+
+    static float old_frame_time = glfwGetTime();
+
+    // ---------- Main loop ----------
+    while (!glfwWindowShouldClose(window))
+    {
+        glfwPollEvents();
+
+        float currentTime = glfwGetTime();
+        float deltaTime = currentTime - old_frame_time;
+        old_frame_time = currentTime;
+
+        int fbW = 0, fbH = 0;
+        glfwGetFramebufferSize(window, &fbW, &fbH);
+        glViewport(0, 0, fbW, fbH);
+
+        viewPort.m_width = static_cast<float>(fbW);
+        viewPort.m_height = static_cast<float>(fbH);
+        camera.set_view_port(viewPort);
+
+        glClearColor(0.1f, 0.15f, 0.2f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+        RotationAngles rot = cube.get_rotation_angles();
+        rot.yaw += omath::opengl_engine::YawAngle ::from_degrees(40.f * deltaTime);
+        rot.roll += omath::opengl_engine::RollAngle::from_degrees(40.f * deltaTime);
+
+        if (rot.pitch.as_degrees() == 90.f)
+            rot.pitch = omath::opengl_engine::PitchAngle::from_degrees(-90.f);
+        rot.pitch += omath::opengl_engine::PitchAngle::from_degrees(40.f * deltaTime);
+        cube.set_rotation(rot);
+
+        const Mat4x4& viewProj = camera.get_view_projection_matrix();
+        const auto& model = cube.get_to_world_matrix();
+
+        glUseProgram(shaderProgram);
+
+        // Send matrices to GPU
+        const float* mvpPtr = viewProj.raw_array().data();
+        const float* modelPtr = model.raw_array().data();
+
+        glUniformMatrix4fv(uMvpLoc, 1, GL_FALSE, mvpPtr);
+        glUniformMatrix4fv(uModel, 1, GL_FALSE, modelPtr);
+
+        glBindVertexArray(VAO);
+        glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(flatIndices.size()), GL_UNSIGNED_INT, nullptr);
+
+        glfwSwapBuffers(window);
+    }
+
+    // ---------- Cleanup ----------
+    glDeleteVertexArrays(1, &VAO);
+    glDeleteBuffers(1, &VBO);
+    glDeleteBuffers(1, &EBO_GL);
+    glDeleteProgram(shaderProgram);
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+    return 0;
+}

include/omath/3d_primitives/mesh.hpp

@@ -6,35 +6,57 @@
 #include <omath/linear_algebra/mat.hpp>
 #include <omath/linear_algebra/vector3.hpp>
 #include <utility>
+#include <variant>
 #include <vector>
 
 namespace omath::primitives
 {
-    template<class Mat4X4, class RotationAngles, class MeshTypeTrait, class Type = float>
+    template<class VecType = Vector3<float>, class UvT = Vector2<float>>
+    struct Vertex final
+    {
+        using VectorType = VecType;
+        using UvType = UvT;
+        VectorType position;
+        VectorType normal;
+        UvType uv;
+    };
+
+    template<typename T> concept HasPosition = requires(T vertex) { vertex.position; };
+    template<typename T> concept HasNormal = requires(T vertex) { vertex.normal; };
+    template<typename T> concept HasUv = requires(T vertex) { vertex.uv; };
+
+    template<class Mat4X4, class RotationAngles, class MeshTypeTrait, class VertType = Vertex<>>
     class Mesh final
     {
     public:
-        using NumericType = Type;
+        using VectorType = VertType::VectorType;
+        using VertexType = VertType;
 
     private:
-        using Vbo = std::vector<Vector3<NumericType>>;
+        using Vbo = std::vector<VertexType>;
-        using Vao = std::vector<Vector3<std::size_t>>;
+        using Ebo = std::vector<Vector3<std::uint32_t>>;
 
     public:
         Vbo m_vertex_buffer;
-        Vao m_vertex_array_object;
+        Ebo m_element_buffer_object;
 
-        Mesh(Vbo vbo, Vao vao, const Vector3<NumericType> scale = {1, 1, 1,})
+        Mesh(Vbo vbo, Ebo vao,
-            : m_vertex_buffer(std::move(vbo)), m_vertex_array_object(std::move(vao)), m_scale(std::move(scale))
+             const VectorType scale =
+                     {
+                             1,
+                             1,
+                             1,
+                     })
+            : m_vertex_buffer(std::move(vbo)), m_element_buffer_object(std::move(vao)), m_scale(std::move(scale))
         {
         }
-        void set_origin(const Vector3<NumericType>& new_origin)
+        void set_origin(const VectorType& new_origin)
         {
             m_origin = new_origin;
             m_to_world_matrix = std::nullopt;
         }
 
-        void set_scale(const Vector3<NumericType>& new_scale)
+        void set_scale(const VectorType& new_scale)
         {
             m_scale = new_scale;
             m_to_world_matrix = std::nullopt;
@@ -47,13 +69,13 @@ namespace omath::primitives
         }
 
         [[nodiscard]]
-        const Vector3<NumericType>& get_origin() const
+        const VectorType& get_origin() const
         {
             return m_origin;
         }
 
         [[nodiscard]]
-        const Vector3<NumericType>& get_scale() const
+        const VectorType& get_scale() const
         {
             return m_scale;
         }
@@ -69,31 +91,34 @@ namespace omath::primitives
         {
             if (m_to_world_matrix)
                 return m_to_world_matrix.value();
-            m_to_world_matrix =
+            m_to_world_matrix = mat_translation<float, Mat4X4::get_store_ordering()>(m_origin)
-                    mat_translation(m_origin) * mat_scale(m_scale) * MeshTypeTrait::rotation_matrix(m_rotation_angles);
+                                * MeshTypeTrait::rotation_matrix(m_rotation_angles)
+                                * mat_scale<float, Mat4X4::get_store_ordering()>(m_scale);
 
             return m_to_world_matrix.value();
         }
 
         [[nodiscard]]
-        Vector3<float> vertex_to_world_space(const Vector3<float>& vertex) const
+        VectorType vertex_position_to_world_space(const Vector3<float>& vertex_position) const
+        requires HasPosition<VertexType>
         {
-            auto abs_vec = get_to_world_matrix() * mat_column_from_vector(vertex);
+            auto abs_vec = get_to_world_matrix() * mat_column_from_vector<typename Mat4X4::ContainedType, Mat4X4::get_store_ordering()>(vertex_position);
 
             return {abs_vec.at(0, 0), abs_vec.at(1, 0), abs_vec.at(2, 0)};
         }
 
         [[nodiscard]]
-        Triangle<Vector3<float>> make_face_in_world_space(const Vao::const_iterator vao_iterator) const
+        Triangle<VectorType> make_face_in_world_space(const Ebo::const_iterator vao_iterator) const
+        requires HasPosition<VertexType>
         {
-            return {vertex_to_world_space(m_vertex_buffer.at(vao_iterator->x)),
+            return {vertex_position_to_world_space(m_vertex_buffer.at(vao_iterator->x).position),
-                    vertex_to_world_space(m_vertex_buffer.at(vao_iterator->y)),
+                    vertex_position_to_world_space(m_vertex_buffer.at(vao_iterator->y).position),
-                    vertex_to_world_space(m_vertex_buffer.at(vao_iterator->z))};
+                    vertex_position_to_world_space(m_vertex_buffer.at(vao_iterator->z).position)};
         }
 
     private:
-        Vector3<NumericType> m_origin;
+        VectorType m_origin;
-        Vector3<NumericType> m_scale;
+        VectorType m_scale;
 
         RotationAngles m_rotation_angles;
 

include/omath/collision/collider_interface.hpp

@@ -0,0 +1,23 @@
+//
+// Created by Vladislav on 06.12.2025.
+//
+#pragma once
+#include <omath/linear_algebra/vector3.hpp>
+
+namespace omath::collision
+{
+    template<class VecType = Vector3<float>>
+    class ColliderInterface
+    {
+    public:
+        using VectorType = VecType;
+        virtual ~ColliderInterface() = default;
+
+        [[nodiscard]]
+        virtual VectorType find_abs_furthest_vertex_position(const VectorType& direction) const = 0;
+
+        [[nodiscard]]
+        virtual const VectorType& get_origin() const = 0;
+        virtual void set_origin(const VectorType& new_origin) = 0;
+    };
+}

include/omath/collision/epa_algorithm.hpp

@@ -1,11 +1,14 @@
 #pragma once
 #include "simplex.hpp"
-#include <algorithm> // find_if
+#include <algorithm>
 #include <array>
 #include <cmath>
 #include <cstdint>
 #include <limits>
+#include <memory>
+#include <memory_resource>
 #include <queue>
+#include <utility>
 #include <vector>
 
 namespace omath::collision
@@ -16,21 +19,21 @@ namespace omath::collision
         { a.cross(b) } -> std::same_as<V>;
         { a.dot(b) } -> std::same_as<float>;
         { -a } -> std::same_as<V>;
-        { a* s } -> std::same_as<V>;
+        { a * s } -> std::same_as<V>;
         { a / s } -> std::same_as<V>;
     };
 
-    template<class ColliderType>
+    template<class ColliderInterfaceType>
     class Epa final
     {
     public:
-        using Vertex = typename ColliderType::VertexType;
+        using VectorType = ColliderInterfaceType::VectorType;
-        static_assert(EpaVector<Vertex>, "VertexType must satisfy EpaVector concept");
+        static_assert(EpaVector<VectorType>, "VertexType must satisfy EpaVector concept");
 
         struct Result final
         {
-            Vertex normal{}; // outward normal (from B to A)
+            VectorType normal{}; // from A to B
-            Vertex penetration_vector;
+            VectorType penetration_vector;
             float depth{0.0f};
             int iterations{0};
             int num_vertices{0};
@@ -42,27 +45,19 @@ namespace omath::collision
             int max_iterations{64};
             float tolerance{1e-4f}; // absolute tolerance on distance growth
         };
-
         // Precondition: simplex.size()==4 and contains the origin.
         [[nodiscard]]
-        static std::optional<Result> solve(const ColliderType& a, const ColliderType& b, const Simplex<Vertex>& simplex,
+        static std::optional<Result> solve(const ColliderInterfaceType& a, const ColliderInterfaceType& b,
-                                           const Params params = {})
+                                           const Simplex<VectorType>& simplex, const Params params = {},
+                                           std::pmr::memory_resource& mem_resource = *std::pmr::get_default_resource())
         {
             // --- Build initial polytope from simplex (4 points) ---
-            std::vector<Vertex> vertexes;
+            std::pmr::vector<VectorType> vertexes = build_initial_polytope_from_simplex(simplex, mem_resource);
-            vertexes.reserve(64);
-            for (std::size_t i = 0; i < simplex.size(); ++i)
-                vertexes.push_back(simplex[i]);
 
             // Initial tetra faces (windings corrected in make_face)
-            std::vector<Face> faces;
+            std::pmr::vector<Face> faces = create_initial_tetra_faces(mem_resource, vertexes);
-            faces.reserve(128);
-            faces.emplace_back(make_face(vertexes, 0, 1, 2));
-            faces.emplace_back(make_face(vertexes, 0, 2, 3));
-            faces.emplace_back(make_face(vertexes, 0, 3, 1));
-            faces.emplace_back(make_face(vertexes, 1, 3, 2));
 
-            auto heap = rebuild_heap(faces);
+            auto heap = rebuild_heap(faces, mem_resource);
 
             Result out{};
 
@@ -75,104 +70,71 @@ namespace omath::collision
                 // (We could keep face handles; this is fine for small Ns.)
 
                 if (const auto top = heap.top(); faces[top.idx].d != top.d)
-                    heap = rebuild_heap(faces);
+                    heap = rebuild_heap(faces, mem_resource);
 
                 if (heap.empty())
                     break;
 
                 const int fidx = heap.top().idx;
-                const Face f = faces[fidx];
+                const Face face = faces[fidx];
 
-                // Get farthest point in face normal direction
+                // Get the furthest point in face normal direction
-                const Vertex p = support_point(a, b, f.n);
+                const VectorType p = support_point(a, b, face.n);
-                const float p_dist = f.n.dot(p);
+                const float p_dist = face.n.dot(p);
 
                 // Converged if we can’t push the face closer than tolerance
-                if (p_dist - f.d <= params.tolerance)
+                if (p_dist - face.d <= params.tolerance)
                 {
-                    out.normal = f.n;
+                    out.normal = face.n;
-                    out.depth = f.d; // along unit normal
+                    out.depth = face.d; // along unit normal
                     out.iterations = it + 1;
                     out.num_vertices = static_cast<int>(vertexes.size());
                     out.num_faces = static_cast<int>(faces.size());
 
-                    const auto centers = b.get_origin() - a.get_origin();
+                    out.penetration_vector = out.normal * out.depth;
-                    const auto sign = out.normal.dot(centers) >= 0 ? 1 : -1;
-
-                    out.penetration_vector = out.normal * out.depth * sign;
                     return out;
                 }
 
                 // Add new vertex
                 const int new_idx = static_cast<int>(vertexes.size());
-                vertexes.push_back(p);
+                vertexes.emplace_back(p);
 
-                // Mark faces visible from p and collect their horizon
+                const auto [to_delete, boundary] = mark_visible_and_collect_horizon(faces, p);
-                std::vector<char> to_delete(faces.size(), 0);
-                std::vector<Edge> boundary;
-                boundary.reserve(faces.size() * 2);
 
-                for (int i = 0; i < static_cast<int>(faces.size()); ++i)
+                erase_marked(faces, to_delete);
-                {
-                    if (to_delete[i])
-                        continue;
-                    if (visible_from(faces[i], p))
-                    {
-                        const auto& rf = faces[i];
-                        to_delete[i] = 1;
-                        add_edge_boundary(boundary, rf.i0, rf.i1);
-                        add_edge_boundary(boundary, rf.i1, rf.i2);
-                        add_edge_boundary(boundary, rf.i2, rf.i0);
-                    }
-                }
-
-                // Remove visible faces
-                std::vector<Face> new_faces;
-                new_faces.reserve(faces.size() + boundary.size());
-                for (int i = 0; i < static_cast<int>(faces.size()); ++i)
-                    if (!to_delete[i])
-                        new_faces.push_back(faces[i]);
-                faces.swap(new_faces);
 
                 // Stitch new faces around the horizon
                 for (const auto& e : boundary)
-                    faces.push_back(make_face(vertexes, e.a, e.b, new_idx));
+                    faces.emplace_back(make_face(vertexes, e.a, e.b, new_idx));
 
                 // Rebuild heap after topology change
-                heap = rebuild_heap(faces);
+                heap = rebuild_heap(faces, mem_resource);
 
                 if (!std::isfinite(vertexes.back().dot(vertexes.back())))
                     break; // safety
                 out.iterations = it + 1;
             }
 
-            // Fallback: pick closest face as best-effort answer
+            if (faces.empty())
-            if (!faces.empty())
+                return std::nullopt;
-            {
-                auto best = faces[0];
-                for (const auto& f : faces)
-                    if (f.d < best.d)
-                        best = f;
-                out.normal = best.n;
-                out.depth = best.d;
-                out.num_vertices = static_cast<int>(vertexes.size());
-                out.num_faces = static_cast<int>(faces.size());
 
-                const auto centers = b.get_origin() - a.get_origin();
+            const auto best = *std::ranges::min_element(faces, [](const auto& first, const auto& second)
-                const auto sign = out.normal.dot(centers) >= 0 ? 1 : -1;
+                                                        { return first.d < second.d; });
+            out.normal = best.n;
+            out.depth = best.d;
+            out.num_vertices = static_cast<int>(vertexes.size());
+            out.num_faces = static_cast<int>(faces.size());
 
-                out.penetration_vector = out.normal * out.depth * sign;
+            out.penetration_vector = out.normal * out.depth;
 
-                return out;
+            return out;
-            }
-            return std::nullopt;
         }
 
     private:
         struct Face final
         {
             int i0, i1, i2;
-            Vertex n; // unit outward normal
+            VectorType n; // unit outward normal
             float d; // n · v0  (>=0 ideally because origin is inside)
         };
 
@@ -188,47 +150,53 @@ namespace omath::collision
         };
         struct HeapCmp final
         {
-            bool operator()(const HeapItem& lhs, const HeapItem& rhs) const noexcept
+            [[nodiscard]]
+            static bool operator()(const HeapItem& lhs, const HeapItem& rhs) noexcept
             {
                 return lhs.d > rhs.d; // min-heap by distance
             }
         };
-        using Heap = std::priority_queue<HeapItem, std::vector<HeapItem>, HeapCmp>;
+
+        using Heap = std::priority_queue<HeapItem, std::pmr::vector<HeapItem>, HeapCmp>;
 
         [[nodiscard]]
-        static Heap rebuild_heap(const std::vector<Face>& faces)
+        static Heap rebuild_heap(const std::pmr::vector<Face>& faces, auto& memory_resource)
         {
-            Heap h;
+            std::pmr::vector<HeapItem> storage{&memory_resource};
+            storage.reserve(faces.size()); // optional but recommended
+
+            Heap h{HeapCmp{}, std::move(storage)};
+
             for (int i = 0; i < static_cast<int>(faces.size()); ++i)
-                h.push({faces[i].d, i});
+                h.emplace(faces[i].d, i);
-            return h;
+
+            return h; // allocator is preserved
         }
 
         [[nodiscard]]
-        static bool visible_from(const Face& f, const Vertex& p)
+        static bool visible_from(const Face& f, const VectorType& p)
         {
             // positive if p is in front of the face
-            return (f.n.dot(p) - f.d) > 1e-7f;
+            return f.n.dot(p) - f.d > 1e-7f;
         }
 
-        static void add_edge_boundary(std::vector<Edge>& boundary, int a, int b)
+        static void add_edge_boundary(std::pmr::vector<Edge>& boundary, int a, int b)
         {
             // Keep edges that appear only once; erase if opposite already present
-            auto itb =
+            auto itb = std::ranges::find_if(boundary, [&](const Edge& e) { return e.a == b && e.b == a; });
-                    std::find_if(boundary.begin(), boundary.end(), [&](const Edge& e) { return e.a == b && e.b == a; });
             if (itb != boundary.end())
                 boundary.erase(itb); // internal edge cancels out
             else
-                boundary.push_back({a, b}); // horizon edge (directed)
+                boundary.emplace_back(a, b); // horizon edge (directed)
         }
 
         [[nodiscard]]
-        static Face make_face(const std::vector<Vertex>& vertexes, int i0, int i1, int i2)
+        static Face make_face(const std::pmr::vector<VectorType>& vertexes, int i0, int i1, int i2)
         {
-            const Vertex& a0 = vertexes[i0];
+            const VectorType& a0 = vertexes[i0];
-            const Vertex& a1 = vertexes[i1];
+            const VectorType& a1 = vertexes[i1];
-            const Vertex& a2 = vertexes[i2];
+            const VectorType& a2 = vertexes[i2];
-            Vertex n = (a1 - a0).cross(a2 - a0);
+            VectorType n = (a1 - a0).cross(a2 - a0);
             if (n.dot(n) <= 1e-30f)
             {
                 n = any_perp_vec(a1 - a0); // degenerate guard
@@ -246,9 +214,10 @@ namespace omath::collision
         }
 
         [[nodiscard]]
-        static Vertex support_point(const ColliderType& a, const ColliderType& b, const Vertex& dir)
+        static VectorType support_point(const ColliderInterfaceType& a, const ColliderInterfaceType& b,
+                                        const VectorType& dir)
         {
-            return a.find_abs_furthest_vertex(dir) - b.find_abs_furthest_vertex(-dir);
+            return a.find_abs_furthest_vertex_position(dir) - b.find_abs_furthest_vertex_position(-dir);
         }
 
         template<class V>
@@ -267,5 +236,67 @@ namespace omath::collision
                     return d;
             return V{1, 0, 0};
         }
+        [[nodiscard]]
+        static std::pmr::vector<Face> create_initial_tetra_faces(std::pmr::memory_resource& mem_resource,
+                                                                 const std::pmr::vector<VectorType>& vertexes)
+        {
+            std::pmr::vector<Face> faces{&mem_resource};
+            faces.reserve(4);
+            faces.emplace_back(make_face(vertexes, 0, 1, 2));
+            faces.emplace_back(make_face(vertexes, 0, 2, 3));
+            faces.emplace_back(make_face(vertexes, 0, 3, 1));
+            faces.emplace_back(make_face(vertexes, 1, 3, 2));
+            return faces;
+        }
+
+        [[nodiscard]]
+        static std::pmr::vector<VectorType> build_initial_polytope_from_simplex(const Simplex<VectorType>& simplex,
+                                                                                std::pmr::memory_resource& mem_resource)
+        {
+            std::pmr::vector<VectorType> vertexes{&mem_resource};
+            vertexes.reserve(simplex.size());
+
+            for (std::size_t i = 0; i < simplex.size(); ++i)
+                vertexes.emplace_back(simplex[i]);
+
+            return vertexes;
+        }
+        static void erase_marked(std::pmr::vector<Face>& faces, const std::pmr::vector<bool>& to_delete)
+        {
+            auto* mr = faces.get_allocator().resource(); // keep same resource
+            std::pmr::vector<Face> kept{mr};
+            kept.reserve(faces.size());
+
+            for (std::size_t i = 0; i < faces.size(); ++i)
+                if (!to_delete[i])
+                    kept.emplace_back(faces[i]);
+
+            faces.swap(kept);
+        }
+        struct Horizon
+        {
+            std::pmr::vector<bool> to_delete;
+            std::pmr::vector<Edge> boundary;
+        };
+
+        static Horizon mark_visible_and_collect_horizon(const std::pmr::vector<Face>& faces, const VectorType& p)
+        {
+            auto* mr = faces.get_allocator().resource();
+
+            Horizon horizon{std::pmr::vector<bool>(faces.size(), false, mr), std::pmr::vector<Edge>(mr)};
+            horizon.boundary.reserve(faces.size());
+
+            for (std::size_t i = 0; i < faces.size(); ++i)
+                if (visible_from(faces[i], p))
+                {
+                    const auto& rf = faces[i];
+                    horizon.to_delete[i] = true;
+                    add_edge_boundary(horizon.boundary, rf.i0, rf.i1);
+                    add_edge_boundary(horizon.boundary, rf.i1, rf.i2);
+                    add_edge_boundary(horizon.boundary, rf.i2, rf.i0);
+                }
+
+            return horizon;
+        }
     };
 } // namespace omath::collision

include/omath/collision/gjk_algorithm.hpp

@@ -14,32 +14,33 @@ namespace omath::collision
         Simplex<VertexType> simplex; // valid only if hit == true and size==4
     };
 
-    template<class ColliderType>
+    template<class ColliderInterfaceType>
     class GjkAlgorithm final
     {
-        using VertexType = typename ColliderType::VertexType;
+        using VectorType = ColliderInterfaceType::VectorType;
 
     public:
         [[nodiscard]]
-        static VertexType find_support_vertex(const ColliderType& collider_a, const ColliderType& collider_b,
+        static VectorType find_support_vertex(const ColliderInterfaceType& collider_a,
-                                              const VertexType& direction)
+                                              const ColliderInterfaceType& collider_b, const VectorType& direction)
         {
-            return collider_a.find_abs_furthest_vertex(direction) - collider_b.find_abs_furthest_vertex(-direction);
+            return collider_a.find_abs_furthest_vertex_position(direction)
+                   - collider_b.find_abs_furthest_vertex_position(-direction);
         }
 
         [[nodiscard]]
-        static bool is_collide(const ColliderType& collider_a, const ColliderType& collider_b)
+        static bool is_collide(const ColliderInterfaceType& collider_a, const ColliderInterfaceType& collider_b)
         {
             return is_collide_with_simplex_info(collider_a, collider_b).hit;
         }
 
         [[nodiscard]]
-        static GjkHitInfo<VertexType> is_collide_with_simplex_info(const ColliderType& collider_a,
+        static GjkHitInfo<VectorType> is_collide_with_simplex_info(const ColliderInterfaceType& collider_a,
-                                                                   const ColliderType& collider_b)
+                                                                   const ColliderInterfaceType& collider_b)
         {
-            auto support = find_support_vertex(collider_a, collider_b, {1, 0, 0});
+            auto support = find_support_vertex(collider_a, collider_b, VectorType{1, 0, 0});
 
-            Simplex<VertexType> simplex;
+            Simplex<VectorType> simplex;
             simplex.push_front(support);
 
             auto direction = -support;

include/omath/collision/mesh_collider.hpp

@@ -3,40 +3,53 @@
 //
 
 #pragma once
+#include "collider_interface.hpp"
 #include "omath/linear_algebra/vector3.hpp"
 
+#ifdef OMATH_BUILD_TESTS
+// ReSharper disable once CppInconsistentNaming
+class UnitTestColider_FindFurthestVertex_Test;
+#endif
+
 namespace omath::collision
 {
     template<class MeshType>
-    class MeshCollider
+    class MeshCollider final : public ColliderInterface<typename MeshType::VertexType::VectorType>
     {
+#ifdef OMATH_BUILD_TESTS
+        friend UnitTestColider_FindFurthestVertex_Test;
+#endif
     public:
-        using NumericType = typename MeshType::NumericType;
+        using VertexType = MeshType::VertexType;
-
+        using VectorType = MeshType::VertexType::VectorType;
-        using VertexType = Vector3<NumericType>;
         explicit MeshCollider(MeshType mesh): m_mesh(std::move(mesh))
         {
         }
 
         [[nodiscard]]
-        const VertexType& find_furthest_vertex(const VertexType& direction) const
+        VectorType find_abs_furthest_vertex_position(const VectorType& direction) const override
         {
-            return *std::ranges::max_element(m_mesh.m_vertex_buffer, [&direction](const auto& first, const auto& second)
+            return m_mesh.vertex_position_to_world_space(find_furthest_vertex(direction).position);
-                                             { return first.dot(direction) < second.dot(direction); });
         }
 
         [[nodiscard]]
-        VertexType find_abs_furthest_vertex(const VertexType& direction) const
+        const VectorType& get_origin() const override
-        {
-            return m_mesh.vertex_to_world_space(find_furthest_vertex(direction));
-        }
-
-        [[nodiscard]]
-        const VertexType& get_origin() const
         {
             return m_mesh.get_origin();
         }
+        void set_origin(const VectorType& new_origin) override
+        {
+            m_mesh.set_origin(new_origin);
+        }
+
     private:
+        [[nodiscard]]
+        const VertexType& find_furthest_vertex(const VectorType& direction) const
+        {
+            return *std::ranges::max_element(
+                    m_mesh.m_vertex_buffer, [&direction](const auto& first, const auto& second)
+                    { return first.position.dot(direction) < second.position.dot(direction); });
+        }
         MeshType m_mesh;
     };
 } // namespace omath::collision

include/omath/engines/frostbite_engine/mesh.hpp

@@ -8,5 +8,5 @@
 
 namespace omath::frostbite_engine
 {
-    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait, float>;
+    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait>;
 }

include/omath/engines/iw_engine/mesh.hpp

@@ -8,5 +8,5 @@
 
 namespace omath::iw_engine
 {
-    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait, float>;
+    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait>;
 }

include/omath/engines/opengl_engine/mesh.hpp

@@ -8,5 +8,5 @@
 
 namespace omath::opengl_engine
 {
-    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait, float>;
+    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait>;
 }

include/omath/engines/source_engine/mesh.hpp

@@ -8,5 +8,5 @@
 
 namespace omath::source_engine
 {
-    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait, float>;
+    using Mesh = primitives::Mesh<Mat4X4, ViewAngles, MeshTrait>;
 }

include/omath/linear_algebra/mat.hpp

@@ -17,6 +17,13 @@
 
 #undef near
 #undef far
+// Undefine FreeBSD/BSD system macros that conflict with method names
+#ifdef minor
+#undef minor
+#endif
+#ifdef major
+#undef major
+#endif
 namespace omath
 {
     struct MatSize
@@ -46,7 +53,7 @@ namespace omath
         }
 
         [[nodiscard]]
-        constexpr static MatStoreType get_store_ordering() noexcept
+        consteval static MatStoreType get_store_ordering() noexcept
         {
             return StoreType;
         }

include/omath/omath.hpp

@@ -30,7 +30,8 @@
 
 // Collision detection
 #include "omath/collision/line_tracer.hpp"
-
+#include "omath/collision/gjk_algorithm.hpp"
+#include "omath/collision/epa_algorithm.hpp"
 // Pathfinding algorithms
 #include "omath/pathfinding/a_star.hpp"
 #include "omath/pathfinding/navigation_mesh.hpp"

include/omath/projection/camera.hpp

@@ -5,6 +5,7 @@
 #pragma once
 
 #include "omath/linear_algebra/mat.hpp"
+#include "omath/linear_algebra/triangle.hpp"
 #include "omath/linear_algebra/vector3.hpp"
 #include "omath/projection/error_codes.hpp"
 #include <expected>
@@ -175,6 +176,53 @@ namespace omath::projection
                 std::unreachable();
         }
 
+        [[nodiscard]] bool is_culled_by_frustum(const Triangle<Vector3<float>>& triangle) const noexcept
+        {
+            // Transform to clip space (before perspective divide)
+            auto to_clip = [this](const Vector3<float>& point)
+            {
+                auto clip = get_view_projection_matrix()
+                            * mat_column_from_vector<float, Mat4X4Type::get_store_ordering()>(point);
+                return std::array<float, 4>{
+                        clip.at(0, 0), // x
+                        clip.at(1, 0), // y
+                        clip.at(2, 0), // z
+                        clip.at(3, 0) // w
+                };
+            };
+
+            const auto c0 = to_clip(triangle.m_vertex1);
+            const auto c1 = to_clip(triangle.m_vertex2);
+            const auto c2 = to_clip(triangle.m_vertex3);
+
+            // If all vertices are behind the camera (w <= 0), trivially reject
+            if (c0[3] <= 0.f && c1[3] <= 0.f && c2[3] <= 0.f)
+                return true;
+
+            // Helper: all three vertices outside the same clip plane
+            auto all_outside_plane = [](const int axis, const std::array<float, 4>& a, const std::array<float, 4>& b,
+                                        const std::array<float, 4>& c, const bool positive_side)
+            {
+                if (positive_side)
+                    return a[axis] > a[3] && b[axis] > b[3] && c[axis] > c[3];
+                return a[axis] < -a[3] && b[axis] < -b[3] && c[axis] < -c[3];
+            };
+
+            // Clip volume in clip space (OpenGL-style):
+            // -w <= x <= w
+            // -w <= y <= w
+            // -w <= z <= w
+
+            for (int i = 0; i < 3; i++)
+            {
+                if (all_outside_plane(i, c0, c1, c2, false))
+                    return true; // x < -w (left)
+                if (all_outside_plane(i, c0, c1, c2, true))
+                    return true; // x >  w (right)
+            }
+            return false;
+        }
+
         [[nodiscard]] std::expected<Vector3<float>, Error>
         world_to_view_port(const Vector3<float>& world_position) const noexcept
         {

source/engines/unreal_engine/formulas.cpp

@@ -37,13 +37,6 @@ namespace omath::unreal_engine
     Mat4X4 calc_perspective_projection_matrix(const float field_of_view, const float aspect_ratio, const float near,
                                               const float far) noexcept
     {
-        const float fov_half_tan = std::tan(angles::degrees_to_radians(field_of_view) / 2.f);
+        return mat_perspective_left_handed(field_of_view, aspect_ratio, near, far);
-
-        return {
-                {1.f / (aspect_ratio * fov_half_tan), 0, 0, 0},
-                {0, 1.f / (fov_half_tan), 0, 0},
-                {0, 0, (far + near) / (far - near), -(2.f * far * near) / (far - near)},
-                {0, 0, -1.f, 0},
-        };
     }
 } // namespace omath::unreal_engine

source/utility/pe_pattern_scan.cpp

@@ -320,7 +320,7 @@ namespace omath
         return std::visit(
                 [base_address, &pattern](const auto& nt_header) -> std::optional<std::uintptr_t>
                 {
-                    // Define .code segment as scan area
+                    // Define .text segment as scan area
                     const auto start = nt_header.optional_header.base_of_code;
                     const auto scan_size = nt_header.optional_header.size_code;
 

tests/CMakeLists.txt

@@ -22,4 +22,8 @@ else() # GTest is being linked as vcpkg package
     find_package(GTest CONFIG REQUIRED)
     target_link_libraries(${PROJECT_NAME} PRIVATE GTest::gtest GTest::gtest_main omath::omath)
 endif()
-gtest_discover_tests(${PROJECT_NAME})
+
+# Skip test discovery for Android builds - binaries cannot run on host
+if (NOT (CMAKE_SYSTEM_NAME STREQUAL "Android" OR CMAKE_SYSTEM_NAME STREQUAL "iOS"))
+    gtest_discover_tests(${PROJECT_NAME})
+endif()

tests/engines/unit_test_unreal_engine.cpp

@@ -82,6 +82,18 @@ TEST(unit_test_unreal_engine, ProjectTargetMovedFromCamera)
         EXPECT_NEAR(projected->y, 360, 0.00001f);
     }
 }
+TEST(unit_test_unreal_engine, ProjectTargetMovedFromCameraBehind)
+{
+    constexpr auto fov = omath::projection::FieldOfView::from_degrees(60.f);
+    const auto cam = omath::unreal_engine::Camera({0, 0, 0}, {}, {1280.f, 720.f}, fov, 0.01f, 10000.f);
+
+    for (float distance = 0.02f; distance < 9000.f; distance += 100.f)
+    {
+        const auto projected = cam.world_to_screen({-distance, 0, 0});
+
+        EXPECT_FALSE(projected.has_value());
+    }
+}
 
 TEST(unit_test_unreal_engine, CameraSetAndGetFov)
 {

tests/general/unit_test_colider.cpp

@@ -7,20 +7,32 @@
 
 TEST(UnitTestColider, CheckToWorld)
 {
-    omath::source_engine::Mesh mesh = {std::vector<omath::Vector3<float>>{{1.f, 1.f, 1.f}, {-1.f, -1.f, -1.f}}, {}};
+    omath::source_engine::Mesh mesh = {
+        std::vector<omath::primitives::Vertex<>>{
+            { { 1.f,  1.f,  1.f }, {}, {} },
+            { {-1.f, -1.f, -1.f }, {}, {} }
+        },
+        {}
+    };
     mesh.set_origin({0, 2, 0});
     const omath::source_engine::MeshCollider collider(mesh);
 
-    const auto vertex = collider.find_abs_furthest_vertex({1.f, 0.f, 0.f});
+    const auto vertex = collider.find_abs_furthest_vertex_position({1.f, 0.f, 0.f});
 
     EXPECT_EQ(vertex, omath::Vector3<float>(1.f, 3.f, 1.f));
 }
 
 TEST(UnitTestColider, FindFurthestVertex)
 {
-    const omath::source_engine::Mesh mesh = {{{1.f, 1.f, 1.f}, {-1.f, -1.f, -1.f}}, {}};
+    const omath::source_engine::Mesh mesh = {
+        {
+            { { 1.f,  1.f,  1.f }, {}, {} },   // position, normal, uv
+            { {-1.f, -1.f, -1.f }, {}, {} }
+        },
+        {}
+    };
     const omath::source_engine::MeshCollider collider(mesh);
-    const auto vertex = collider.find_furthest_vertex({1.f, 0.f, 0.f});
+    const auto vertex = collider.find_furthest_vertex({1.f, 0.f, 0.f}).position;
     EXPECT_EQ(vertex, omath::Vector3<float>(1.f, 1.f, 1.f));
 }
 

tests/general/unit_test_epa.cpp

@@ -5,6 +5,7 @@
 #include "omath/engines/source_engine/mesh.hpp"
 #include "omath/linear_algebra/vector3.hpp"
 #include <gtest/gtest.h>
+#include <memory_resource>
 
 using Mesh = omath::source_engine::Mesh;
 using Collider = omath::source_engine::MeshCollider;
@@ -14,9 +15,17 @@ using EPA = omath::collision::Epa<Collider>;
 TEST(UnitTestEpa, TestCollisionTrue)
 {
     // Unit cube [-1,1]^3
-    std::vector<omath::Vector3<float>> vbo = {{-1, -1, -1}, {-1, -1, 1}, {-1, 1, -1}, {-1, 1, 1},
+    std::vector<omath::primitives::Vertex<>> vbo = {
-                                              {1, 1, 1},    {1, 1, -1},  {1, -1, 1},  {1, -1, -1}};
+        { {-1.f, -1.f, -1.f}, {}, {} },
-    std::vector<omath::Vector3<std::size_t>> vao; // not needed
+        { {-1.f, -1.f,  1.f}, {}, {} },
+        { {-1.f,  1.f, -1.f}, {}, {} },
+        { {-1.f,  1.f,  1.f}, {}, {} },
+        { { 1.f,  1.f,  1.f}, {}, {} },
+        { { 1.f,  1.f, -1.f}, {}, {} },
+        { { 1.f, -1.f,  1.f}, {}, {} },
+        { { 1.f, -1.f, -1.f}, {}, {} }
+    };
+    std::vector<omath::Vector3<std::uint32_t>> vao; // not needed
 
     Mesh a(vbo, vao, {1, 1, 1});
     Mesh b(vbo, vao, {1, 1, 1});
@@ -33,9 +42,10 @@ TEST(UnitTestEpa, TestCollisionTrue)
 
     // EPA
     EPA::Params params;
+    auto pool = std::make_shared<std::pmr::monotonic_buffer_resource>(1024);
     params.max_iterations = 64;
     params.tolerance = 1e-4f;
-    auto epa = EPA::solve(A, B, gjk.simplex, params);
+    auto epa = EPA::solve(A, B, gjk.simplex, params, *pool);
     ASSERT_TRUE(epa.has_value()) << "EPA should converge";
 
     // Normal is unit
@@ -51,7 +61,7 @@ TEST(UnitTestEpa, TestCollisionTrue)
 
     // Try both signs with a tiny margin (avoid grazing contacts)
     const float margin = 1.0f + 1e-3f;
-    const auto pen = epa->normal * epa->depth;
+    const auto pen = epa->penetration_vector;
 
     Mesh b_plus = b;
     b_plus.set_origin(b_plus.get_origin() + pen * margin);
@@ -80,9 +90,17 @@ TEST(UnitTestEpa, TestCollisionTrue)
 }
 TEST(UnitTestEpa, TestCollisionTrue2)
 {
-    std::vector<omath::Vector3<float>> vbo = {{-1, -1, -1}, {-1, -1, 1}, {-1, 1, -1}, {-1, 1, 1},
+    std::vector<omath::primitives::Vertex<>> vbo = {
-                                              {1, 1, 1},    {1, 1, -1},  {1, -1, 1},  {1, -1, -1}};
+        { { -1.f, -1.f, -1.f }, {}, {} },
-    std::vector<omath::Vector3<std::size_t>> vao; // not needed
+        { { -1.f, -1.f,  1.f }, {}, {} },
+        { { -1.f,  1.f, -1.f }, {}, {} },
+        { { -1.f,  1.f,  1.f }, {}, {} },
+        { {  1.f,  1.f,  1.f }, {}, {} },
+        { {  1.f,  1.f, -1.f }, {}, {} },
+        { {  1.f, -1.f,  1.f }, {}, {} },
+        { {  1.f, -1.f, -1.f }, {}, {} }
+    };
+    std::vector<omath::Vector3<std::uint32_t>> vao; // not needed
 
     Mesh a(vbo, vao, {1, 1, 1});
     Mesh b(vbo, vao, {1, 1, 1});
@@ -96,12 +114,12 @@ TEST(UnitTestEpa, TestCollisionTrue2)
     // --- GJK must detect collision and provide simplex ---
     auto gjk = GJK::is_collide_with_simplex_info(A, B);
     ASSERT_TRUE(gjk.hit) << "GJK should report collision for overlapping cubes";
-
     // --- EPA penetration ---
     EPA::Params params;
     params.max_iterations = 64;
     params.tolerance = 1e-4f;
-    auto epa = EPA::solve(A, B, gjk.simplex, params);
+    auto pool = std::make_shared<std::pmr::monotonic_buffer_resource>(1024);
+    auto epa = EPA::solve(A, B, gjk.simplex, params, *pool);
     ASSERT_TRUE(epa.has_value()) << "EPA should converge";
 
     // Normal is unit-length
@@ -115,12 +133,8 @@ TEST(UnitTestEpa, TestCollisionTrue2)
     EXPECT_NEAR(epa->normal.y, 0.0f, 1e-3f);
     EXPECT_NEAR(epa->normal.z, 0.0f, 1e-3f);
 
-    // Choose a deterministic sign: orient penetration from A toward B
-    const auto centers = b.get_origin() - a.get_origin(); // (0.5, 0, 0)
-    float sign = (epa->normal.dot(centers) >= 0.0f) ? +1.0f : -1.0f;
-
     constexpr float margin = 1.0f + 1e-3f; // tiny slack to avoid grazing
-    const auto pen = epa->normal * epa->depth * sign;
+    const auto pen = epa->normal * epa->depth;
 
     // Apply once: B + pen must separate; the opposite must still collide
     Mesh b_resolved = b;

tests/general/unit_test_gjk.cpp

@@ -8,15 +8,18 @@
 namespace
 {
     const omath::source_engine::Mesh mesh = {
-            {{-1.f, -1.f, -1.f},
+        {
-             {-1.f, -1.f, 1.f},
+            { {-1.f, -1.f, -1.f}, {}, {} },
-             {-1.f, 1.f, -1.f},
+            { {-1.f, -1.f,  1.f}, {}, {} },
-             {-1.f, 1.f, 1.f},
+            { {-1.f,  1.f, -1.f}, {}, {} },
-             {1.f, 1.f, 1.f},
+            { {-1.f,  1.f,  1.f}, {}, {} },
-             {1.f, 1.f, -1.f},
+            { { 1.f,  1.f,  1.f}, {}, {} },
-             {1.f, -1.f, 1.f},
+            { { 1.f,  1.f, -1.f}, {}, {} },
-             {1.f, -1.f, -1.f}},
+            { { 1.f, -1.f,  1.f}, {}, {} },
-            {}};
+            { { 1.f, -1.f, -1.f}, {}, {} }
+        },
+        {}
+    };
 }
 TEST(UnitTestGjk, TestCollisionTrue)
 {

tests/general/unit_test_mat.cpp

@@ -231,3 +231,13 @@ TEST(UnitTestMatStandalone, Equanity)
 
     EXPECT_EQ(ndc_left_handed, ndc_right_handed);
 }
+TEST(UnitTestMatStandalone, MatPerspectiveLeftHanded)
+{
+    auto perspective_proj = mat_perspective_left_handed(90.f, 16.f/9.f, 0.1f, 1000.f);
+    auto projected = perspective_proj
+                             * mat_column_from_vector<float>({0, 0, 0.1001});
+
+    projected /= projected.at(3, 0);
+
+    EXPECT_TRUE(projected.at(2, 0) > -1.0f && projected.at(2, 0) < 0.f);
+}

vcpkg.json

@@ -4,7 +4,7 @@
   "description": "General purpose math library",
   "homepage": "https://github.com/orange-cpp/omath",
   "license": "Zlib",
-  "supports": "windows | linux",
+  "supports": "windows | linux | macos",
   "dependencies": [
     {
       "name": "vcpkg-cmake",
@@ -26,6 +26,13 @@
         "benchmark"
       ]
     },
+    "examples": {
+      "description": "Build benchmarks",
+      "dependencies": [
+        "glfw3",
+        "glew"
+      ]
+    },
     "imgui": {
       "description": "Omath will define method to convert omath types to imgui types",
       "dependencies": [