def test_undo_redo(
brush_shape,
brush_size,
mode,
selected_label,
preserve_labels,
n_dimensional,
):
blobs = data.binary_blobs(length=64, volume_fraction=0.3, n_dim=3)
layer = Labels(blobs)
data_history = [blobs.copy()]
with pytest.warns(FutureWarning):
layer.brush_shape = brush_shape
layer.brush_size = brush_size
layer.mode = mode
layer.selected_label = selected_label
layer.preserve_labels = preserve_labels
layer.n_edit_dimensions = 3 if n_dimensional else 2
coord = np.random.random((3, )) * (np.array(blobs.shape) - 1)
while layer.data[tuple(coord.astype(int))] == 0 and np.any(layer.data):
coord = np.random.random((3, )) * (np.array(blobs.shape) - 1)
if layer.mode == 'fill':
layer.fill(coord, layer.selected_label)
if layer.mode == 'erase':
layer.paint(coord, 0)
if layer.mode == 'paint':
layer.paint(coord, layer.selected_label)
data_history.append(np.copy(layer.data))
layer.undo()
np.testing.assert_array_equal(layer.data, data_history[0])
layer.redo()
np.testing.assert_array_equal(layer.data, data_history[1])
def test_paint_with_preserve_labels():
"""Test painting labels while preserving existing labels"""
data = np.zeros((15, 10))
data[:3, :3] = 1
layer = Labels(data)
layer.preserve_labels = True
assert np.unique(layer.data[:3, :3]) == 1
layer.brush_size = 9
layer.paint([0, 0], 2)
assert np.unique(layer.data[3:5, 0:5]) == 2
assert np.unique(layer.data[0:5, 3:5]) == 2
assert np.unique(layer.data[:3, :3]) == 1
def test_paint_with_preserve_labels():
"""Test painting labels with square brush while preserving existing labels."""
data = np.zeros((15, 10), dtype=np.uint32)
data[:3, :3] = 1
layer = Labels(data)
with pytest.warns(FutureWarning):
layer.brush_shape = 'square'
layer.preserve_labels = True
assert np.unique(layer.data[:3, :3]) == 1
layer.brush_size = 9
layer.paint([0, 0], 2)
assert np.unique(layer.data[3:5, 0:5]) == 2
assert np.unique(layer.data[0:5, 3:5]) == 2
assert np.unique(layer.data[:3, :3]) == 1
def test_paint_3d():
"""Test painting labels with circle brush on 3D image."""
data = np.zeros((30, 40, 40), dtype=np.uint32)
layer = Labels(data)
layer.brush_size = 12
layer.mode = 'paint'
# Paint in 2D
layer.paint((10, 10, 10), 3)
# Paint in 3D
layer.n_edit_dimensions = 3
layer.paint((10, 25, 10), 4)
# Paint in 3D, preserve labels
layer.n_edit_dimensions = 3
layer.preserve_labels = True
layer.paint((10, 15, 15), 5)
assert np.sum(layer.data[4:17, 4:17, 4:17] == 3) == 137
assert np.sum(layer.data[4:17, 19:32, 4:17] == 4) == 1189
assert np.sum(layer.data[4:17, 9:32, 9:32] == 5) == 1103
def test_paint_3d(brush_shape, expected_sum):
"""Test painting labels with circle/square brush on 3D image."""
data = np.zeros((30, 40, 40))
layer = Labels(data)
layer.brush_size = 12
layer.brush_shape = brush_shape
layer.mode = 'paint'
# Paint in 2D
layer.paint((10, 10, 10), 3)
# Paint in 3D
layer.n_dimensional = True
layer.paint((10, 25, 10), 4)
# Paint in 3D, preserve labels
layer.n_dimensional = True
layer.preserve_labels = True
layer.paint((10, 15, 15), 5)
assert np.sum(layer.data[4:17, 4:17, 4:17] == 3) == expected_sum[0]
assert np.sum(layer.data[4:17, 19:32, 4:17] == 4) == expected_sum[1]
assert np.sum(layer.data[4:17, 9:32, 9:32] == 5) == expected_sum[2]
