cmake_minimum_required(VERSION 3.11)

project(QtVtkVolumeRendering)

set(CMAKE_AUTOMOC ON)

find_package(Qt5Widgets REQUIRED QUIET)

find_package(VTK COMPONENTS vtkDICOM
                            vtkCommonColor
                            vtkCommonCore
                            vtkCommonDataModel
                            vtkIOImage
                            vtkInteractionStyle
                            vtkRenderingContextOpenGL2
                            vtkRenderingCore
                            vtkRenderingFreeType
                            vtkRenderingGL2PSOpenGL2
                            vtkRenderingOpenGL2
                            vtkRenderingVolume
                            vtkRenderingVolumeOpenGL2
                            vtkViewsQt
                            vtkGUISupportQt
                            vtkCommonColor
                            vtkFiltersSources REQUIRED QUIET)

file(GLOB_RECURSE sources main.cpp)

if (NOT VTK_FOUND)
  message("Skipping ${PROJECT_NAME}: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(${PROJECT_NAME} ${sources})
  target_link_libraries(${PROJECT_NAME} PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(${PROJECT_NAME} ${sources})
  target_link_libraries(${PROJECT_NAME} PRIVATE ${VTK_LIBRARIES})
  target_include_directories(${PROJECT_NAME} PRIVATE include)
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS ${PROJECT_NAME}
    MODULES ${VTK_LIBRARIES}
    )
endif ()