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Beginning chapter 11 animations

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This commit is contained in:
Grant Sanderson
2016-09-16 14:06:44 -07:00
parent 82143e2d64
commit f3ca337ee4
10 changed files with 1086 additions and 21 deletions
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mobject/vectorized_mobject.py
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@ -234,7 +234,7 @@ class VMobject(Mobject):
def point_from_proportion(self, alpha):
num_cubics = self.get_num_anchor_points()-1
interpoint_alpha = num_cubics*(alpha % (1./num_cubics))
index = 3*int(alpha*num_cubics)
index = min(3*int(alpha*num_cubics), 3*num_cubics)
cubic = bezier(self.points[index:index+4])
return cubic(interpoint_alpha)