class TransformAnimations(Transform):
CONFIG = {
"rate_func": squish_rate_func(smooth)
}
def __init__(self, start_anim, end_anim, **kwargs):
digest_config(self, kwargs, locals())
if "run_time" in kwargs:
self.run_time = kwargs.pop("run_time")
else:
self.run_time = max(start_anim.run_time, end_anim.run_time)
for anim in start_anim, end_anim:
anim.set_run_time(self.run_time)
if start_anim.starting_mobject.get_num_points() != end_anim.starting_mobject.get_num_points():
start_anim.starting_mobject.align_data(end_anim.starting_mobject)
for anim in start_anim, end_anim:
if hasattr(anim, "target_mobject"):
anim.starting_mobject.align_data(anim.target_mobject)
Transform.__init__(self, start_anim.mobject,
end_anim.mobject, **kwargs)
# Rewire starting and ending mobjects
start_anim.mobject = self.starting_mobject
end_anim.mobject = self.target_mobject
def update(self, alpha):
self.start_anim.update(alpha)
self.end_anim.update(alpha)
Transform.update(self, alpha)
class Blink(ApplyMethod):
CONFIG = {
"rate_func": squish_rate_func(there_and_back)
}
def __init__(self, pi_creature, **kwargs):
ApplyMethod.__init__(self, pi_creature.blink, **kwargs)
def get_rate_func(pi):
index = creatures_list.index(pi)
proportion = float(index) / len(creatures_list)
start_time = 0.8 * proportion
return squish_rate_func(
there_and_back,
start_time, start_time + 0.2
)
def blink_anim(self, **kwargs):
target = self.copy()
bottom_y = self.get_bottom()[1]
for submob in target:
submob.apply_function(
lambda p: [p[0], bottom_y, p[2]]
)
if "rate_func" not in kwargs:
kwargs["rate_func"] = squish_rate_func(there_and_back)
return Transform(self, target, **kwargs)
class CircleIndicate(Indicate):
CONFIG = {
"rate_func": squish_rate_func(there_and_back, 0, 0.8),
"remover": True
}
def __init__(self, mobject, **kwargs):
digest_config(self, kwargs)
circle = Circle(color=self.color, **kwargs)
circle.surround(mobject)
Indicate.__init__(self, circle, **kwargs)
def __init__(self, AnimationClass, mobject, arg_creator=None, **kwargs):
digest_config(self, kwargs)
for key in "rate_func", "run_time", "lag_ratio":
if key in kwargs:
kwargs.pop(key)
if arg_creator is None:
def arg_creator(mobject):
return (mobject, )
self.subanimations = [
AnimationClass(*arg_creator(submob),
run_time=self.run_time,
rate_func=squish_rate_func(self.rate_func, beta,
beta + self.lag_ratio),
**kwargs)
for submob, beta in zip(
mobject, np.linspace(0, 1 - self.lag_ratio, len(mobject)))
]
Animation.__init__(self, mobject, **kwargs)