Added Proj integration

.github/workflows/cmake-linux-deb.yml

@@ -17,13 +17,13 @@ jobs:
     # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
     # You can convert this to a matrix build if you need cross-platform coverage.
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
     - name: Load repository cache
       run:  sudo apt-get update --allow-releaseinfo-change
     - name: Install Libs
-      run: sudo apt-get install -y --no-install-recommends libeigen3-dev libglew-dev freeglut3-dev libx11-dev libxi-dev libtbb-dev liblaszip-dev libopencv-dev
+      run: sudo apt-get install -y --no-install-recommends libeigen3-dev libglew-dev freeglut3-dev libx11-dev libxi-dev libtbb-dev liblaszip-dev libopencv-dev libproj-dev
 
     - uses: actions/checkout@v4
       with:
@@ -34,12 +34,12 @@ jobs:
         wget -O cmake.sh https://github.com/Kitware/CMake/releases/download/v4.0.0/cmake-4.0.0-linux-x86_64.sh
         sudo sh cmake.sh --skip-license --prefix=/usr/local
         cmake --version
-    
+
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DBUILD_WITH_BUNDLED_FREEGLUT=0 -DBUILD_WITH_BUNDLED_EIGEN=0 -DBUILD_WITH_BUNDLED_LIBLASZIP=0
-
+  
     - name: Build
       # Build your program with the given configuration
       run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} --target package

.github/workflows/cmake-linux.yml

@@ -17,13 +17,13 @@ jobs:
     # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
     # You can convert this to a matrix build if you need cross-platform coverage.
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
     - name: Load repository cache
       run:  sudo apt-get update --allow-releaseinfo-change
     - name: Install Libs
-      run: sudo apt-get install -y --no-install-recommends libx11-dev libxi-dev libtbb-dev libegl1-mesa-dev libglu1-mesa-dev libopencv-dev
+      run: sudo apt-get install -y --no-install-recommends libx11-dev libxi-dev libtbb-dev libegl1-mesa-dev libglu1-mesa-dev libopencv-dev libproj-dev
 
     - uses: actions/checkout@v4
       with:
@@ -34,7 +34,10 @@ jobs:
         wget -O cmake.sh https://github.com/Kitware/CMake/releases/download/v4.0.0/cmake-4.0.0-linux-x86_64.sh
         sudo sh cmake.sh --skip-license --prefix=/usr/local
         cmake --version
-
+
+    - name: Fix pkg-config visibility
+      run: echo "PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/lib/pkgconfig:$PKG_CONFIG_PATH" >> $GITHUB_ENV
+
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type

.github/workflows/python-bindings-linux.yml

@@ -11,7 +11,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         python-version: ["3.12"]
@@ -21,7 +21,7 @@ jobs:
         run: sudo apt-get update --allow-releaseinfo-change
 
       - name: Install system libraries
-        run: sudo apt-get install -y --no-install-recommends libx11-dev libxi-dev libtbb-dev libegl1-mesa-dev libglu1-mesa-dev libopencv-dev
+        run: sudo apt-get install -y --no-install-recommends libx11-dev libxi-dev libtbb-dev libegl1-mesa-dev libglu1-mesa-dev libopencv-dev libproj-dev
 
       - uses: actions/checkout@v4
         with:
@@ -58,3 +58,4 @@ jobs:
           python -c "import sys; sys.path.insert(0, '.'); import multi_view_tls_registration_py; print('multi_view_tls_registration_py imported successfully')"
 
 
+

.gitignore

@@ -70,3 +70,5 @@ imgui.ini
 /out_old/install
 
 /.gitmodules
+/build2
+/build3

3rdpartyBinary/Proj/CMakeLists.txt

@@ -0,0 +1,102 @@
+cmake_minimum_required(VERSION 3.28)
+
+# ============================================================
+# PROJ setup
+# ============================================================
+
+
+
+# ----------------------------
+# Linux / Unix
+# ----------------------------
+if(UNIX AND NOT WIN32)
+
+    find_package(PROJ CONFIG QUIET)
+
+    # Some distros expose lowercase target
+    if(TARGET PROJ::proj)
+        set(PROJ_TARGET PROJ::proj)
+
+    elseif(TARGET proj)
+        set(PROJ_TARGET proj)
+
+    else()
+        message(FATAL_ERROR
+            "PROJ not found.\n"
+            "libproj-dev is installed but CMake could not locate the config package.\n"
+            "Check CMAKE_PREFIX_PATH or PROJ_DIR."
+        )
+    endif()
+
+endif()
+
+# ----------------------------
+# Windows – download prebuilt
+# ----------------------------
+if(WIN32)
+    set(PROJ_FILENAME "proj-windows.zip")
+    set(PROJ_URL
+        "https://github.com/MapsHD/proj_win_deploy/releases/download/v9.3.0-5/proj-windows.zip"
+    )
+
+
+    set(PROJ_SHA256
+        "2d0cef6a07ca4d3e83cb6ca89637fb62db1650006876305e8d6a2af21468ae48"
+    )
+
+    set(PROJ_DOWNLOAD_PATH "${CMAKE_BINARY_DIR}/${PROJ_FILENAME}")
+    set(PROJ_EXTRACT_DIR   "${CMAKE_BINARY_DIR}/3rd_binary/PROJ")
+
+    # ----------------------------
+    # Download
+    # ----------------------------
+    if(NOT EXISTS "${PROJ_DOWNLOAD_PATH}")
+        message(STATUS "Downloading PROJ ${PROJ_VERSION}...")
+        file(DOWNLOAD
+            "${PROJ_URL}"
+            "${PROJ_DOWNLOAD_PATH}"
+            EXPECTED_HASH SHA256=${PROJ_SHA256}
+            SHOW_PROGRESS
+            TLS_VERIFY ON
+        )
+    endif()
+
+    # ----------------------------
+    # Extract
+    # ----------------------------
+    if(NOT EXISTS "${PROJ_EXTRACT_DIR}/include")
+        message(STATUS "Extracting PROJ...")
+        file(ARCHIVE_EXTRACT
+            INPUT "${PROJ_DOWNLOAD_PATH}"
+            DESTINATION "${PROJ_EXTRACT_DIR}"
+        )
+    endif()
+    set(PROJ_VERSION v9.3.0)
+    set(PROJ_ROOT "${PROJ_EXTRACT_DIR}/install_proj")
+    set (PROJ_INCLUDE_DIR "${PROJ_ROOT}/include")
+    set (PROJ_LIBRARY "${PROJ_ROOT}/bin/proj_9_3.dll")
+    set (PROJ_IMPLIB "${PROJ_ROOT}/lib/proj.lib")
+    set (PROJ_DB "${PROJ_ROOT}/share/proj/proj.db")
+
+    # ----------------------------
+    # Create imported target
+    # ----------------------------
+    add_library(PROJ::proj SHARED IMPORTED)
+
+    set_target_properties(PROJ::proj PROPERTIES
+        IMPORTED_LOCATION "${PROJ_ROOT}/bin/proj_9_3.dll"
+        IMPORTED_IMPLIB  "${PROJ_ROOT}/lib/proj.lib"
+        INTERFACE_INCLUDE_DIRECTORIES "${PROJ_ROOT}/include"
+    )
+    add_library(PROJ::ZLIB SHARED IMPORTED)
+    set_target_properties(PROJ::ZLIB PROPERTIES
+        IMPORTED_LOCATION "${PROJ_ROOT}/bin/z.dll"
+        IMPORTED_IMPLIB  "${PROJ_ROOT}/lib/zs.lib"
+        INTERFACE_INCLUDE_DIRECTORIES "${PROJ_ROOT}/include"
+    )
+
+    set_property(TARGET PROJ::proj APPEND PROPERTY
+        INTERFACE_LINK_LIBRARIES PROJ::ZLIB
+    )
+
+endif()

CMakeLists.txt

@@ -368,6 +368,12 @@ include(${THIRDPARTY_DIRECTORY_BINARY}/OpenCV/CMakeLists.txt)
 find_package(OpenCV REQUIRED)
 MESSAGE(STATUS "OpenCV include dir: ${OpenCV_INCLUDE_DIRS}, OpenCV librarys: ${OpenCV_LIBS}")
 
+
+# Download or Search for PROJ
+include(${THIRDPARTY_DIRECTORY_BINARY}/Proj/CMakeLists.txt)
+MESSAGE(STATUS "PROJ include dir: ${PROJ_INCLUDE_DIR}, PROJ library: ${PROJ_LIBRARY}")
+MESSAGE(STATUS "PROJ implementation library: ${PROJ_IMPLIB}, PROJ database: ${PROJ_DB}")
+
 # Option to build with bundled oneTBB
 option(BUILD_WITH_BUNDLED_ONETBB "Build with bundled oneTBB" ON)
 if (BUILD_WITH_BUNDLED_ONETBB)

apps/multi_view_tls_registration/CMakeLists.txt

@@ -51,7 +51,8 @@ target_include_directories(
           ${PLATFORM_LASZIP_LIB}
           ${PLATFORM_MISCELLANEOUS_LIBS}
           ${CORE_LIBRARIES}
-          ${GUI_LIBRARIES})
+          ${GUI_LIBRARIES}
+          PROJ::proj)
 
 if(WIN32)
   add_custom_command(