# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.

cmake_minimum_required (VERSION 3.13)

set(UVATLAS_VERSION 1.8.4)

project (UVAtlas
  VERSION ${UVATLAS_VERSION}
  DESCRIPTION "UVAtlas Isochart Atlas Library"
  HOMEPAGE_URL "https://go.microsoft.com/fwlink/?LinkID=512686"
  LANGUAGES CXX)

# To build this tool, you need the DirectXTex (http://go.microsoft.com/fwlink/?LinkId=248926) and
# DirectXMesh (http://go.microsoft.com/fwlink/?LinkID=324981) cmake packages available.
#
# Use vcpkg and set the required CMAKE_TOOLCHAIN_FILE path to vcpkg.cmake
#
# -or-
#
# cmake install the individual packages and add the per-configuration variables for directxmesh_DIR and directxtex_DIR
#
# Note to support Windows 7, turn off BUILD_DX12 build options for both libraries.
option(BUILD_TOOLS "Build UVAtlasTool" OFF)

# Enable the use of OpenMP
option(UVATLAS_USE_OPENMP "Build with OpenMP support" ON)

# Enable use of the Eigen and BLAS libraries (https://eigen.tuxfamily.org/)
option(ENABLE_USE_EIGEN "Use the Eigen & BLAS libraries" OFF)

option(ENABLE_CODE_ANALYSIS "Use Static Code Analysis on build" OFF)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/CMake")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/CMake")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/CMake")

if (DEFINED VCPKG_TARGET_ARCHITECTURE)
    set(DIRECTX_ARCH ${VCPKG_TARGET_ARCHITECTURE})
elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Ww][Ii][Nn]32$")
    set(DIRECTX_ARCH x86)
elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Xx]64$")
    set(DIRECTX_ARCH x64)
elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]$")
    set(DIRECTX_ARCH arm)
elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]64$")
    set(DIRECTX_ARCH arm64)
endif()

include(GNUInstallDirs)

#--- Library
set(LIBRARY_HEADERS
    UVAtlas/inc/UVAtlas.h)

set(LIBRARY_SOURCES
    UVAtlas/maxheap.hpp
    UVAtlas/pch.h
    UVAtlas/geodesics/ApproximateOneToAll.cpp
    UVAtlas/geodesics/ApproximateOneToAll.h
    UVAtlas/geodesics/datatypes.h
    UVAtlas/geodesics/ExactOneToAll.cpp
    UVAtlas/geodesics/ExactOneToAll.h
    UVAtlas/geodesics/mathutils.cpp
    UVAtlas/geodesics/mathutils.h
    UVAtlas/geodesics/minheap.hpp
    UVAtlas/isochart/barycentricparam.cpp
    UVAtlas/isochart/basemeshinfo.cpp
    UVAtlas/isochart/basemeshinfo.h
    UVAtlas/isochart/callbackschemer.h
    UVAtlas/isochart/graphcut.cpp
    UVAtlas/isochart/graphcut.h
    UVAtlas/isochart/imtcomputation.cpp
    UVAtlas/isochart/isochart.cpp
    UVAtlas/isochart/isochart.h
    UVAtlas/isochart/isochartconfig.h
    UVAtlas/isochart/isochartengine.cpp
    UVAtlas/isochart/isochartengine.h
    UVAtlas/isochart/isochartmesh.cpp
    UVAtlas/isochart/isochartmesh.h
    UVAtlas/isochart/isochartutil.cpp
    UVAtlas/isochart/isochartutil.h
    UVAtlas/isochart/isomap.cpp
    UVAtlas/isochart/isomap.h
    UVAtlas/isochart/lscmparam.cpp
    UVAtlas/isochart/mergecharts.cpp
    UVAtlas/isochart/meshapplyisomap.cpp
    UVAtlas/isochart/meshcommon.inl
    UVAtlas/isochart/meshoptimizeboundaries.cpp
    UVAtlas/isochart/meshoptimizestretch.cpp
    UVAtlas/isochart/meshpartitionchart.cpp
    UVAtlas/isochart/packingcharts.cpp
    UVAtlas/isochart/progressivemesh.cpp
    UVAtlas/isochart/progressivemesh.h
    UVAtlas/isochart/sparsematrix.hpp
    UVAtlas/isochart/SymmetricMatrix.hpp
    UVAtlas/isochart/UVAtlas.cpp
    UVAtlas/isochart/UVAtlasRepacker.cpp
    UVAtlas/isochart/UVAtlasRepacker.h
    UVAtlas/isochart/vertiter.cpp
    UVAtlas/isochart/vertiter.h
    UVAtlas/isochart/Vis_Maxflow.cpp
    UVAtlas/isochart/Vis_Maxflow.h
)

add_library (${PROJECT_NAME} STATIC ${LIBRARY_SOURCES} ${LIBRARY_HEADERS})

source_group(inc REGULAR_EXPRESSION UVAtlas/inc/*.*)
source_group(geodesics REGULAR_EXPRESSION UVAtlas/geodesics/*.*)
source_group(isochart REGULAR_EXPRESSION UVAtlas/isochart/*.*)
source_group(isochart REGULAR_EXPRESSION UVAtlas/isochart/*.*)

target_include_directories(${PROJECT_NAME} PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/UVAtlas/inc>
  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)

target_compile_features(${PROJECT_NAME} PUBLIC cxx_std_11)

target_include_directories(${PROJECT_NAME} PRIVATE UVAtlas UVAtlas/geodesics UVAtlas/isochart)

if ((${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16") AND (NOT MINGW))
    target_precompile_headers(${PROJECT_NAME} PRIVATE UVAtlas/pch.h)
endif()

if(MSVC)
    # Use max Warning Level
    string(REPLACE "/W3 " "/Wall " CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
    string(REPLACE "/W3 " "/Wall " CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
    string(REPLACE "/W3 " "/Wall " CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})

    # Not using typeid or dynamic_cast, so disable RTTI to save binary size
    string(REPLACE "/GR " "/GR- " CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
    string(REPLACE "/GR " "/GR- " CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
    string(REPLACE "/GR " "/GR- " CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
endif()

if (MINGW OR (NOT WIN32) OR VCPKG_TOOLCHAIN)
    message("INFO: Using VCPKG for DirectX-Headers and DirectXMath.")
    find_package(directx-headers CONFIG REQUIRED)
    find_package(directxmath CONFIG REQUIRED)
    target_link_libraries(${PROJECT_NAME} PRIVATE Microsoft::DirectX-Headers Microsoft::DirectXMath)
    target_compile_definitions(${PROJECT_NAME} PRIVATE USING_DIRECTX_HEADERS)
endif()

if (ENABLE_USE_EIGEN)
    message("INFO: Using Eigen3 & Spectra for CSymmetricMatrix::GetEigen.")
    find_package(Eigen3 REQUIRED)
    find_package(spectra REQUIRED)
    target_link_libraries(${PROJECT_NAME} PRIVATE Eigen3::Eigen Spectra::Spectra)
    target_compile_definitions(${PROJECT_NAME} PRIVATE UVATLAS_USE_EIGEN)
endif()

#--- Package
include(CMakePackageConfigHelpers)

string(TOLOWER ${PROJECT_NAME} PACKAGE_NAME)

write_basic_package_version_file(
  ${PACKAGE_NAME}-config-version.cmake
  VERSION ${UVATLAS_VERSION}
  COMPATIBILITY AnyNewerVersion)

install(TARGETS ${PROJECT_NAME}
  EXPORT ${PROJECT_NAME}-targets
  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

configure_package_config_file(${CMAKE_CURRENT_SOURCE_DIR}/.nuget/${PROJECT_NAME}-config.cmake.in
  ${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake
  INSTALL_DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PACKAGE_NAME}/cmake/)

install(EXPORT ${PROJECT_NAME}-targets
  FILE ${PROJECT_NAME}-targets.cmake
  NAMESPACE Microsoft::
  DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PACKAGE_NAME}/cmake/)

install(FILES ${LIBRARY_HEADERS}
  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

install(FILES
    ${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake
    ${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake
  DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PACKAGE_NAME}/cmake/)

#--- Command-line tool
if(BUILD_TOOLS AND WIN32 AND (NOT WINDOWS_STORE))
    set(TOOL_EXES uvatlastool)

    message("INFO: Using VCPKG for DirectXMesh and DirectXTex (required for uvatlastool).")

    find_package(directxmesh CONFIG REQUIRED COMPONENTS library utils)
    find_package(directxtex CONFIG REQUIRED)

    add_executable(uvatlastool
        UVAtlasTool/UVAtlas.cpp
        UVAtlasTool/Mesh.cpp
        UVAtlasTool/Mesh.h
        UVAtlasTool/MeshOBJ.cpp
        UVAtlasTool/SDKMesh.h)
    target_link_libraries(uvatlastool
        ${PROJECT_NAME}
        ole32.lib version.lib
        Microsoft::DirectXMesh
        Microsoft::DirectXTex
        Microsoft::DirectXMesh::Utilities)
    source_group(uvatlastool REGULAR_EXPRESSION UVAtlasTool/*.*)

    if (MINGW OR VCPKG_TOOLCHAIN)
      target_link_libraries(uvatlastool Microsoft::DirectXMath)
    endif()
endif()

if(MSVC)
    foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
      target_compile_options(${t} PRIVATE /fp:fast "$<$<NOT:$<CONFIG:DEBUG>>:/guard:cf>")
      target_link_options(${t} PRIVATE /DYNAMICBASE /NXCOMPAT)
    endforeach()

    if((${CMAKE_SIZEOF_VOID_P} EQUAL 4) AND (NOT ${DIRECTX_ARCH} MATCHES "^arm"))
        foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
          target_link_options(${t} PRIVATE /SAFESEH)
        endforeach()
    endif()
endif()

if(NOT ${DIRECTX_ARCH} MATCHES "^arm")
    if (${CMAKE_SIZEOF_VOID_P} EQUAL "4")
        set(ARCH_SSE2 $<$<CXX_COMPILER_ID:MSVC>:/arch:SSE2> $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-msse2>)
    else()
        set(ARCH_SSE2 $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-msse2>)
    endif()

    foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
      target_compile_options(${t} PRIVATE ${ARCH_SSE2})
    endforeach()
endif()

if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
    set(WarningsLib "-Wpedantic" "-Wextra")
    target_compile_options(${PROJECT_NAME} PRIVATE ${WarningsLib})

    set(WarningsEXE ${WarningsLib} "-Wno-c++98-compat" "-Wno-c++98-compat-pedantic" "-Wno-switch" "-Wno-switch-enum" "-Wno-exit-time-destructors" "-Wno-switch" "-Wno-switch-enum" "-Wno-language-extension-token" "-Wno-missing-prototypes")
    foreach(t IN LISTS TOOL_EXES)
      target_compile_options(${t} PRIVATE ${WarningsEXE})
    endforeach()
endif()
if(MINGW)
    foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
      target_compile_options(${t} PRIVATE "-Wno-ignored-attributes")
      target_link_options(${t} PRIVATE -municode)
    endforeach()
endif()
if (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
    foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
      target_compile_options(${t} PRIVATE /sdl /permissive- /JMC- /Zc:__cplusplus)
    endforeach()

    if(ENABLE_CODE_ANALYSIS)
      foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
        target_compile_options(${t} PRIVATE /analyze)
      endforeach()
    endif()

    if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.24)
        foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
          target_compile_options(${t} PRIVATE /ZH:SHA_256)
        endforeach()
    endif()

    if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.26)
        foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
          target_compile_options(${t} PRIVATE /Zc:preprocessor /wd5105)
        endforeach()
    endif()

    if ((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.27) AND (NOT (${DIRECTX_ARCH} MATCHES "^arm")))
        foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
          target_link_options(${t} PRIVATE /CETCOMPAT)
        endforeach()
    endif()

    if(UVATLAS_USE_OPENMP)
        foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
          target_compile_options(${t} PRIVATE /openmp /Zc:twoPhase-)
        endforeach()
    endif()

    set(WarningsEXE "/wd4365" "/wd4514" "/wd4625" "/wd4626" "/wd4627" "/wd4668" "/wd4710" "/wd4751" "/wd4820" "/wd5026" "/wd5027" "/wd5039" "/wd5045" "/wd4061" "/wd4062" "/wd5219")
    foreach(t IN LISTS TOOL_EXES)
      target_compile_options(${t} PRIVATE ${WarningsEXE})
    endforeach()
endif()

if(WIN32)
    foreach(t IN LISTS TOOL_EXES ITEMS ${PROJECT_NAME})
      target_compile_definitions(${t} PRIVATE _UNICODE UNICODE)
    endforeach()

    if(WINDOWS_STORE)
      target_compile_definitions(${PROJECT_NAME} PRIVATE _WIN32_WINNT=0x0A00 WINAPI_FAMILY=WINAPI_FAMILY_APP)
    else()
      target_compile_definitions(${PROJECT_NAME} PRIVATE _WIN32_WINNT=0x0601)
    endif()

    foreach(t IN LISTS TOOL_EXES)
      target_compile_definitions(${t} PRIVATE _WIN32_WINNT=0x0601)
    endforeach()
endif()

if(BUILD_TOOLS AND WIN32 AND (NOT WINDOWS_STORE))
    set_property(DIRECTORY PROPERTY VS_STARTUP_PROJECT uvatlastool)
endif()