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Cleand up movement.py for new Animation structure

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This commit is contained in:
Grant Sanderson 2019-02-09 15:12:35 -08:00
parent 3714446eea
commit 2b64656f35
1 changed files with 16 additions and 11 deletions
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27
manimlib/animation/movement.py
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@ -1,5 +1,4 @@
from manimlib.animation.animation import Animation
from manimlib.constants import *
from manimlib.utils.config_ops import digest_config
from manimlib.utils.rate_functions import linear
@ -12,13 +11,14 @@ class Homotopy(Animation):
def __init__(self, homotopy, mobject, **kwargs):
"""
Homotopy a function from (x, y, z, t) to (x', y', z')
Homotopy is a function from
(x, y, z, t) to (x', y', z')
"""
def function_at_time_t(t):
return lambda p: homotopy(p[0], p[1], p[2], t)
self.function_at_time_t = function_at_time_t
digest_config(self, kwargs)
Animation.__init__(self, mobject, **kwargs)
self.homotopy = homotopy
super().__init__(mobject, **kwargs)
def function_at_time_t(self, t):
return lambda p: self.homotopy(*p, t)
def interpolate_submobject(self, submob, start, alpha):
submob.points = start.points
@ -49,11 +49,12 @@ class PhaseFlow(Animation):
CONFIG = {
"virtual_time": 1,
"rate_func": linear,
"suspend_mobject_updating": False,
}
def __init__(self, function, mobject, **kwargs):
digest_config(self, kwargs, locals())
Animation.__init__(self, mobject, **kwargs)
self.function = function
super().__init__(mobject, **kwargs)
def interpolate_mobject(self, alpha):
if hasattr(self, "last_alpha"):
@ -65,9 +66,13 @@ class PhaseFlow(Animation):
class MoveAlongPath(Animation):
CONFIG = {
"suspend_mobject_updating": False,
}
def __init__(self, mobject, path, **kwargs):
digest_config(self, kwargs, locals())
Animation.__init__(self, mobject, **kwargs)
self.path = path
super().__init__(mobject, **kwargs)
def interpolate_mobject(self, alpha):
point = self.path.point_from_proportion(alpha)