CMakeLists.txt

cmake_minimum_required(VERSION 3.20)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_C_STANDARD 17)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++20 -stdlib=libc++ -fexperimental-library")

project(mesh2audio LANGUAGES C CXX)

if(APPLE)
    enable_language(OBJC)
endif()

add_subdirectory(lib)

file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS src/*.cpp)

# Create a dummy output that depends on all resource files,
# so that changes in resource files trigger a re-copy of the changed files to the build directory.
file(GLOB_RECURSE RES_FILES LIST_DIRECTORIES false "res/*.*")
set(DUMMY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/dummy_res")
add_custom_command(
    OUTPUT ${DUMMY_OUTPUT}
    COMMAND ${CMAKE_COMMAND} -E copy_directory "../res" "${CMAKE_CURRENT_BINARY_DIR}/res"
    DEPENDS ${RES_FILES}
    COMMENT "Copying resource files to build directory"
)
add_custom_target(CopyResources ALL DEPENDS ${DUMMY_OUTPUT})

set(IMGUI_DIR lib/imgui)
set(IMPLOT_DIR lib/implot)

add_executable(${PROJECT_NAME}
    ${IMGUI_DIR}/imgui_demo.cpp
    ${IMGUI_DIR}/imgui_draw.cpp
    ${IMGUI_DIR}/imgui_tables.cpp
    ${IMGUI_DIR}/imgui_widgets.cpp
    ${IMGUI_DIR}/imgui.cpp
    ${IMGUI_DIR}/backends/imgui_impl_opengl3.cpp
    ${IMGUI_DIR}/backends/imgui_impl_sdl3.cpp
    ${IMPLOT_DIR}/implot.cpp
    ${IMPLOT_DIR}/implot_items.cpp
    ${IMPLOT_DIR}/implot_demo.cpp
    lib/ImGuizmo/ImGuizmo.cpp
    lib/quickhull/QuickHull.cpp
    ${SOURCES}
)
add_dependencies(${PROJECT_NAME} CopyResources)

set(INCLUDE_EXECUTABLE OFF CACHE STRING "Build the mesh2faust executable" FORCE)
set(Mesh2FaustDir ${CMAKE_CURRENT_SOURCE_DIR}/lib/faust/tools/physicalModeling/mesh2faust)
add_subdirectory(${Mesh2FaustDir})

find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)

include_directories(
    ${IMGUI_DIR}
    ${IMGUI_DIR}/backends
    ${IMPLOT_DIR}
    lib/imspinner
    lib/ImGuizmo
    lib/glm
    lib/miniaudio
    lib/faust/architecture
    lib/nanosvg/src
    lib/date/include/date
    lib/libnpy/include
    lib/tetgen
    lib/quickhull
    ${Mesh2FaustDir}/src
    src
)

if(APPLE)
  target_include_directories(${PROJECT_NAME} PRIVATE /opt/homebrew/Cellar/eigen/3.4.0_1/include/eigen3)
else()
  target_include_directories(${PROJECT_NAME} PRIVATE /usr/include/eigen3)
endif()

# `dynamiclib` is faust.
target_link_libraries(${PROJECT_NAME} PRIVATE OpenGL::GL GLEW::GLEW SDL3::SDL3 nfd dynamiclib mesh2faust tetgen reactphysics3d OpenMeshCore)

set_target_properties(${PROJECT_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
target_compile_options(${PROJECT_NAME} PRIVATE -Wall -Wextra -Wno-elaborated-enum-base -DIMGUI_IMPL_OPENGL_LOADER_GLEW)
add_definitions(-DTETLIBRARY)