Merge pull request #157 from orange-cpp/feature/mesh_improvement

Feature/mesh improvement

.idea/dictionaries/project.xml

@@ -1,7 +0,0 @@
-<component name="ProjectDictionaryState">
-  <dictionary name="project">
-    <words>
-      <w>vmprotect</w>
-    </words>
-  </dictionary>
-</component>

CMakeLists.txt

@@ -31,10 +31,6 @@ option(OMATH_SUPRESS_SAFETY_CHECKS
 option(OMATH_ENABLE_COVERAGE "Enable coverage" OFF)
 option(OMATH_ENABLE_FORCE_INLINE
        "Will for compiler to make some functions to be force inlined no matter what" ON)
-option(OMATH_VMPROTECT_INTEGRATION
-       "omath will use vmprotect sdk to protect sensitive parts of code from reverse engineering"
-       OFF)
-
 if(VCPKG_MANIFEST_FEATURES)
     foreach(omath_feature IN LISTS VCPKG_MANIFEST_FEATURES)
         if(omath_feature STREQUAL "imgui")
@@ -47,8 +43,6 @@ if(VCPKG_MANIFEST_FEATURES)
             set(OMATH_BUILD_BENCHMARK ON)
         elseif(omath_feature STREQUAL "examples")
             set(OMATH_BUILD_EXAMPLES ON)
-        elseif(omath_feature STREQUAL "vmprotect")
-            set(OMATH_VMPROTECT_INTEGRATION ON)
         endif()
 
     endforeach()
@@ -113,11 +107,6 @@ if(OMATH_IMGUI_INTEGRATION)
 
 endif()
 
-if(OMATH_VMPROTECT_INTEGRATION)
-    find_package(vmprotect_sdk CONFIG REQUIRED)
-    target_link_libraries(${PROJECT_NAME} PUBLIC vmprotect_sdk::vmprotect_sdk)
-endif()
-
 if(OMATH_USE_AVX2)
     target_compile_definitions(${PROJECT_NAME} PUBLIC OMATH_USE_AVX2)
 endif()

CMakePresets.json

@@ -145,7 +145,7 @@
       "hidden": true,
       "inherits": ["linux-base", "vcpkg-base"],
       "cacheVariables": {
-        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2;vmprotect;examples"
+        "VCPKG_MANIFEST_FEATURES": "tests;imgui;avx2"
       }
     },
     {

examples/CMakeLists.txt

@@ -2,7 +2,7 @@ add_subdirectory(example_barycentric)
 add_subdirectory(example_glfw3)
 add_subdirectory(example_proj_mat_builder)
 add_subdirectory(example_signature_scan)
-add_subdirectory(exmple_var_encryption)
+
 if(OMATH_ENABLE_VALGRIND)
     omath_setup_valgrind(example_projection_matrix_builder)
     omath_setup_valgrind(example_signature_scan)

examples/exmple_var_encryption/CMakeLists.txt

@@ -1,10 +0,0 @@
-project(example_var_encryption)
-
-add_executable(${PROJECT_NAME} main.cpp)
-set_target_properties(
-    ${PROJECT_NAME}
-    PROPERTIES CXX_STANDARD 23
-               ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
-               LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}"
-               RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/out/${CMAKE_BUILD_TYPE}")
-target_link_libraries(${PROJECT_NAME} PRIVATE omath::omath)

examples/exmple_var_encryption/main.cpp

@@ -1,15 +0,0 @@
-//
-// Created by orange on 24.02.2026.
-//
-#include "omath/containers/encrypted_variable.hpp"
-#include <omath/omath.hpp>
-#include <print>
-int main()
-{
-    OMATH_DEF_CRYPT_VAR(int, 64) var{5};
-    var.encrypt();
-    std::println("{}", var.value());
-    var.decrypt();
-    std::println("{}", var.value());
-    return var.value();
-}

include/omath/collision/mesh_collider.hpp

@@ -46,9 +46,27 @@ namespace omath::collision
         [[nodiscard]]
         const VertexType& find_furthest_vertex(const VectorType& direction) const
         {
+            // The support query arrives in world space, but vertex positions are stored
+            // in local space.  We need argmax_v { world(v) · d }.
+            //
+            // world(v) = M·v  (ignoring translation, which is constant across vertices)
+            // world(v) · d = v · Mᵀ·d
+            //
+            // So we transform the direction to local space once — O(1) — then compare
+            // raw local positions, which is far cheaper than calling
+            // vertex_position_to_world_space (full 4×4 multiply) for every vertex.
+            //
+            // d_local = upper-left 3×3 of M, transposed, times d_world:
+            //   d_local[j] = sum_i  M.at(i,j) * d[i]   (i.e. column j of M dotted with d)
+            const auto& m = m_mesh.get_to_world_matrix();
+            const VectorType d_local = {
+                m.at(0, 0) * direction.x + m.at(1, 0) * direction.y + m.at(2, 0) * direction.z,
+                m.at(0, 1) * direction.x + m.at(1, 1) * direction.y + m.at(2, 1) * direction.z,
+                m.at(0, 2) * direction.x + m.at(1, 2) * direction.y + m.at(2, 2) * direction.z,
+            };
             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); });
+                    m_mesh.m_vertex_buffer, [&d_local](const auto& first, const auto& second)
+                    { return first.position.dot(d_local) < second.position.dot(d_local); });
         }
         MeshType m_mesh;
     };

include/omath/containers/encrypted_variable.hpp

@@ -2,14 +2,10 @@
 // Created by Vladislav on 04.01.2026.
 //
 #pragma once
-#include <VMProtectSDK.h>
 #include <array>
 #include <cstddef>
 #include <cstdint>
 #include <span>
-#include <source_location>
-
-
 #ifdef OMATH_ENABLE_FORCE_INLINE
 #ifdef _MSC_VER
 #define OMATH_FORCE_INLINE __forceinline
@@ -114,18 +110,16 @@ namespace omath
         bool m_is_encrypted{};
         value_type m_data{};
 
-        OMATH_FORCE_INLINE void xor_contained_var_by_key()
+        OMATH_FORCE_INLINE constexpr void xor_contained_var_by_key()
         {
-            VMProtectBeginVirtualization(nullptr);
             // Safe, keeps const-correctness, and avoids reinterpret_cast issues
             auto bytes = std::as_writable_bytes(std::span<value_type, 1>{&m_data, 1});
 
             for (std::size_t i = 0; i < bytes.size(); ++i)
             {
-                const auto k = static_cast<std::uint8_t>(key[i % key_size] + (i * key_size));
+                const std::uint8_t k = static_cast<std::uint8_t>(key[i % key_size] + (i * key_size));
                 bytes[i] ^= static_cast<std::byte>(k);
             }
-            VMProtectEnd();
         }
 
     public:
@@ -140,7 +134,7 @@ namespace omath
             return m_is_encrypted;
         }
 
-        OMATH_FORCE_INLINE void decrypt()
+        OMATH_FORCE_INLINE constexpr void decrypt()
         {
             if (!m_is_encrypted)
                 return;
@@ -148,7 +142,7 @@ namespace omath
             m_is_encrypted = false;
         }
 
-        OMATH_FORCE_INLINE void encrypt()
+        OMATH_FORCE_INLINE constexpr void encrypt()
         {
             if (m_is_encrypted)
                 return;

source/utility/elf_pattern_scan.cpp

@@ -8,7 +8,6 @@
 #include <utility>
 #include <variant>
 #include <vector>
-#include <VMProtectSDK.h>
 
 #pragma pack(push, 1)
 

vcpkg-configuration.json

@@ -1,7 +1,7 @@
 {
   "default-registry": {
     "kind": "git",
-    "baseline": "05442024c3fda64320bd25d2251cc9807b84fb6f",
+    "baseline": "b1b19307e2d2ec1eefbdb7ea069de7d4bcd31f01",
     "repository": "https://github.com/microsoft/vcpkg"
   },
   "registries": [

vcpkg.json

@@ -17,16 +17,9 @@
   ],
   "features": {
     "avx2": {
-      "description": "omath will use AVX2 to boost performance",
+      "description": "Omath will use AVX2 to boost performance",
       "supports": "!arm"
     },
-    "vmprotect": {
-      "description": "omath will use vmprotect sdk to protect sensitive parts of code from reverse engineering",
-      "supports": "windows | linux | osx | android",
-      "dependencies": [
-        "orange-vmprotect-sdk"
-      ]
-    },
     "benchmark": {
       "description": "Build benchmarks",
       "dependencies": [
@@ -42,7 +35,7 @@
       ]
     },
     "imgui": {
-      "description": "omath will define method to convert omath types to imgui types",
+      "description": "Omath will define method to convert omath types to imgui types",
       "dependencies": [
         "imgui"
       ]