if(GNURBS_ENABLE_TEST)
  add_subdirectory(curves)
  add_subdirectory(gnurbs)
  add_subdirectory(gnurbseditor)
  add_subdirectory(surfaces)
  add_subdirectory(arbre)
  add_subdirectory(curvatures)
  add_subdirectory(draping)
  add_subdirectory(numeric)
  add_subdirectory(polybezier)
  add_subdirectory(teapot)
  add_subdirectory(profil)
  add_subdirectory(mc)
  add_subdirectory(reparametrization)
  add_subdirectory(mesh)
  add_subdirectory(fem)
  add_subdirectory(femcrack)
  
  if(GNURBS_ENABLE_CLOTHOID)
  add_subdirectory(clothoid)
  add_subdirectory(nrspline)
  endif(GNURBS_ENABLE_CLOTHOID)
endif(GNURBS_ENABLE_TEST)

if(GNURBS_ENABLE_LESSONS)
  add_subdirectory(lesson2)
  add_subdirectory(lesson3)
endif(GNURBS_ENABLE_LESSONS)