[repetition / others] copies should get their own repetitions

masque/test/test_pattern.py

@@ -1,4 +1,5 @@
 import pytest
+import copy
 from typing import cast
 from numpy.testing import assert_equal, assert_allclose
 from numpy import pi
@@ -148,3 +149,26 @@ def test_pattern_interface() -> None:
     assert_allclose(iface.ports["out_A"].rotation, 0, atol=1e-10)
     assert iface.ports["in_A"].ptype == "test"
     assert iface.ports["out_A"].ptype == "test"
+
+
+def test_pattern_deepcopy_does_not_share_shape_repetitions() -> None:
+    pat = Pattern()
+    pat.polygon((1, 0), vertices=[[0, 0], [1, 0], [0, 1]], repetition=Grid(a_vector=(10, 0), a_count=2))
+
+    pat2 = copy.deepcopy(pat)
+    pat2.scale_by(2)
+
+    assert_allclose(cast("Polygon", pat.shapes[(1, 0)][0]).repetition.a_vector, [10, 0])
+    assert_allclose(cast("Polygon", pat2.shapes[(1, 0)][0]).repetition.a_vector, [20, 0])
+
+
+def test_pattern_flatten_does_not_mutate_child_repetitions() -> None:
+    child = Pattern()
+    child.polygon((1, 0), vertices=[[0, 0], [1, 0], [0, 1]], repetition=Grid(a_vector=(10, 0), a_count=2))
+
+    parent = Pattern()
+    parent.ref("child", scale=2)
+
+    parent.flatten({"child": child})
+
+    assert_allclose(cast("Polygon", child.shapes[(1, 0)][0]).repetition.a_vector, [10, 0])