project(CGALimageIO_Demo)

cmake_minimum_required(VERSION 2.8.11)
if(POLICY CMP0043)
  cmake_policy(SET CMP0043 OLD)
endif()


set(PACKAGE_ROOT ../..)

# Add several CGAL packages to the include and link paths,
# if they lie in ${PACKAGE_ROOT}/.
foreach(INC_DIR ${PACKAGE_ROOT}/include 
		${PACKAGE_ROOT}/../CGAL_ImageIO/include )
  if(EXISTS ${INC_DIR})
    include_directories (BEFORE ${INC_DIR})
  endif()
endforeach()
foreach(LIB_DIR ${PACKAGE_ROOT}/../CGAL_ImageIO/src/CGAL_ImageIO)
  if (EXISTS ${LIB_DIR})
    link_directories (${LIB_DIR})
  endif()
endforeach()


find_package(CGAL REQUIRED ImageIO)
include( ${CGAL_USE_FILE} )
find_package(VTK QUIET NO_MODULE)

if(VTK_FOUND)
  add_definitions(-DCGAL_USE_VTK)

  if(TARGET vtkRenderingQt AND TARGET vtkFiltersModeling)
    find_package(VTK COMPONENTS vtkRenderingQt vtkFiltersModeling NO_MODULE)
    include(${VTK_USE_FILE})
    find_package(Qt${VTK_QT_VERSION} COMPONENTS QtGui)
    if(NOT TARGET Qt${VTK_QT_VERSION}::QtGui)
      message(STATUS "NOTICE: vtkRenderingQt needs Qt${VTK_QT_VERSION}, and will not be compiled.")
      return()
    endif()

    add_executable( image_to_vtk_viewer image_to_vtk_viewer.cpp )
    add_to_cached_list( CGAL_EXECUTABLE_TARGETS image_to_vtk_viewer )

    target_link_libraries( image_to_vtk_viewer
      ${CGAL_LIBRARIES} ${CGAL_3RD_PARTY_LIBRARIES}
      ${VTK_LIBRARIES} Qt${VTK_QT_VERSION}::QtGui
      )
  else()
    message(STATUS "NOTICE: This demo needs vtkRenderingQt and vtkFiltersModeling, and will not be compiled.")
  endif()
else()
  message(STATUS "NOTICE: This demo needs VTK, and will not be compiled.")
endif()