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Update to bezier

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This commit is contained in:
Grant Sanderson 2022-12-28 21:06:36 -08:00
parent 7b0b31e8d9
commit 596aea3bf5
1 changed files with 4 additions and 1 deletions
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5
manimlib/utils/bezier.py
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@ -24,9 +24,12 @@ CLOSED_THRESHOLD = 0.001
def bezier( def bezier(
points: Sequence[Scalable] points: Sequence[Scalable]
) -> Callable[[float], Scalable]: ) -> Callable[[float], Scalable]:
if len(points) == 0:
raise Exception("bezier cannot be calld on an empty list")
n = len(points) - 1 n = len(points) - 1
def result(t: Scalable) -> Scalable: def result(t: float) -> Scalable:
return sum( return sum(
((1 - t)**(n - k)) * (t**k) * choose(n, k) * point ((1 - t)**(n - k)) * (t**k) * choose(n, k) * point
for k, point in enumerate(points) for k, point in enumerate(points)