def __init__(self, source, target):
matching_line = Line(0.5 * DOWN, 0.5 * UP)
def matched_objects(source, target):
matched = VGroup(source.copy(), matching_line.copy(),
target.copy())
matched.arrange_submobjects(direction=DOWN)
return matched
final_mobj = VGroup(
*(matched_objects(s, t)
for (s, t) in zip(source.submobjects, target.submobjects)))
self.buff = 2 * DEFAULT_MOBJECT_TO_MOBJECT_BUFFER
final_mobj.arrange_submobjects(buff=self.buff)
final_mobj.center()
def match_animation(source, target, matched):
return AnimationGroup(Transform(source, matched.submobjects[0]),
ShowCreation(matched.submobjects[1]),
Transform(target, matched.submobjects[2]))
self.match_animations = [
match_animation(s, t, m) for (s, t, m) in zip(
source.submobjects, target.submobjects, final_mobj.submobjects)
]
self.matching = VGroup(*[mob[1] for mob in final_mobj])
def get_order_n_self(self, order):
if order == 0:
result = self.get_seed_shape()
else:
lower_order = self.get_order_n_self(order - 1)
subparts = [lower_order.copy() for x in range(self.num_subparts)]
self.arrange_subparts(*subparts)
result = VGroup(*subparts)
result.scale_to_fit_height(self.height)
result.center()
return result
def get_order_n_self(self, order):
if order == 0:
result = self.get_seed_shape()
else:
lower_order = self.get_order_n_self(order - 1)
subparts = [
lower_order.copy()
for x in range(self.num_subparts)
]
self.arrange_subparts(*subparts)
result = VGroup(*subparts)
result.scale_to_fit_height(self.height)
result.center()
return result
