def test_save_and_load_polydata(): l_ext = ["vtk", "fib", "ply", "xml"] fname = "temp-io" for ext in l_ext: with InTemporaryDirectory() as odir: data = np.random.randint(0, 255, size=(50, 3)) pd = vtk.vtkPolyData() pd.SetPoints(numpy_to_vtk_points(data)) fname_path = pjoin(odir, "{0}.{1}".format(fname, ext)) save_polydata(pd, fname_path) npt.assert_equal(os.path.isfile(fname_path), True) assert_greater(os.stat(fname_path).st_size, 0) out_pd = load_polydata(fname_path) out_data = numpy_support.vtk_to_numpy(out_pd.GetPoints().GetData()) npt.assert_array_equal(data, out_data) npt.assert_raises(IOError, save_polydata, vtk.vtkPolyData(), "test.vti") npt.assert_raises(IOError, save_polydata, vtk.vtkPolyData(), "test.obj") npt.assert_raises(IOError, load_polydata, "test.vti")
def test_save_and_load_options(): l_ext = ["ply", "vtk"] l_options = [{ 'color_array_name': 'horizon', }, { 'binary': True, }] fname = "temp-io" for ext, option in zip(l_ext, l_options): with InTemporaryDirectory() as odir: data = np.random.randint(0, 255, size=(50, 3)) pd = vtk.vtkPolyData() pd.SetPoints(numpy_to_vtk_points(data)) fname_path = pjoin(odir, "{0}.{1}".format(fname, ext)) save_polydata(pd, fname_path, **option) npt.assert_equal(os.path.isfile(fname_path), True) assert_greater(os.stat(fname_path).st_size, 0) out_pd = load_polydata(fname_path) out_data = numpy_support.vtk_to_numpy(out_pd.GetPoints().GetData()) npt.assert_array_equal(data, out_data) l_ext = ["stl", "obj"] l_options = [{}, { 'is_mni_obj': True, }] for ext, option in zip(l_ext, l_options): with InTemporaryDirectory() as odir: data = np.random.randint(0, 255, size=(50, 3)) pd = vtk.vtkPolyData() pd.SetPoints(numpy_to_vtk_points(data)) fname_path = pjoin(odir, "{0}.{1}".format(fname, ext)) save_polydata(pd, fname_path, **option) npt.assert_equal(os.path.isfile(fname_path), True) assert_greater(os.stat(fname_path).st_size, 0)
[1.25, 1.25, 0.0]]) #9 my_triangles = np.array([[1, 9, 0], #good [1, 2, 3], [3, 4, 5], #good [5, 6, 7], [7, 8, 9], #good [1, 9, 3], #good [3, 7, 9], #good [3, 5, 7]], dtype='i8') #good utils.set_polydata_vertices(my_polydata, my_vertices) utils.set_polydata_triangles(my_polydata, my_triangles) file_name = "my_star2D.vtk" save_polydata(my_polydata, file_name) print("Surface saved in " + file_name) star_polydata = load_polydata(file_name) star_vertices = utils.get_polydata_vertices(star_polydata) colors = star_vertices * 255 utils.set_polydata_colors(star_polydata, colors) print("new surface colors") print(utils.get_polydata_colors(star_polydata)) # get vtkActor star_actor = utils.get_actor_from_polydata(star_polydata) star_actor.GetProperty().BackfaceCullingOff() # Create a scene