def test_mobject_copy():
"""Test that a copy is a deepcopy."""
orig = Mobject()
orig.add(*[Mobject() for _ in range(10)])
copy = orig.copy()
assert orig is orig
assert orig is not copy
assert orig.submobjects is not copy.submobjects
for i in range(10):
assert orig.submobjects[i] is not copy.submobjects[i]
def add(
self,
name: str,
val_orig: m.Mobject,
highlight: m.Mobject = None,
extra_animations: List[m.Animation] = None,
) -> None:
"""Add an name-value association to the context and return animations
name -- the name part of the association
val_orig -- a Mobject that is the value part of the association
highlight -- a Mobject that should be highlighted before other animations are
played, defaults to val_orig
extra_animations -- animations to be played along the others during the last
step
This creates a copy of `val_orig` and sets its target to the position of
the value in the context, the returned animations will make the copy
move to this position.
"""
self.scene.play(m.Indicate(highlight if highlight else val_orig))
association = m.VDict([
("name", m.Tex(name, color=m.GRAY)),
("eq", m.Tex("=", color=m.GRAY)),
("val", val_orig.copy()),
])
association["name"].move_to(self.entries[-1], aligned_edge=m.LEFT)
association["eq"].next_to(association["name"], m.RIGHT)
association["val"].generate_target().next_to(association["eq"],
m.RIGHT).set_color(m.GRAY)
self.scene.play(
m.ApplyMethod(self.entries.shift, m.UP * 0.5),
m.FadeInFrom(association["name"], direction=m.DOWN),
m.FadeInFrom(association["eq"], direction=m.DOWN),
m.MoveToTarget(association["val"]),
*(extra_animations if extra_animations else []),
)
self.entries.add(association)
self.scene.remove(association) # The previous line created a copy
