if(BUILD_PANGOLIN_GUI AND BUILD_PANGOLIN_VARS )
  if(BUILD_PANGOLIN_VIDEO)
      add_subdirectory(VideoViewer)
      add_subdirectory(VideoConvert)
      add_subdirectory(VideoJson)
      add_subdirectory(Plotter)
  endif()

  option(BUILD_PANGOLIN_EIGEN "Build support for Eigen matrix types" ON)
  if(BUILD_PANGOLIN_EIGEN)
      find_package(Eigen QUIET)
      if(EIGEN_FOUND)
          add_subdirectory(ModelViewer)
      endif()
  endif()

endif()