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MoveAlongPath animation

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Grant Sanderson 2016-03-21 19:29:12 -07:00
parent 55fb146400
commit 2a711a37f8
1 changed files with 10 additions and 0 deletions
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10
animation/simple_animations.py
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@ -126,6 +126,16 @@ class PhaseFlow(Animation):
) )
self.last_alpha = alpha self.last_alpha = alpha
class MoveAlongPath(Animation):
def __init__(self, mobject, path, **kwargs):
digest_config(self, kwargs, locals())
Animation.__init__(self, mobject, **kwargs)
def update_mobject(self, alpha):
n = self.path.get_num_points()-1
point = self.path.points[int(alpha*n)]
self.mobject.shift(point-self.mobject.get_center())
### Animation modifiers ### ### Animation modifiers ###
class ApplyToCenters(Animation): class ApplyToCenters(Animation):