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Check for valid inputs to arccos

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This commit is contained in:
Grant Sanderson 2023-01-13 21:42:54 -08:00
parent dae51abc17
commit 3555936c4d
1 changed files with 1 additions and 2 deletions
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3
manimlib/mobject/types/vectorized_mobject.py
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@ -1101,8 +1101,7 @@ class VMobject(Mobject):
# the joint_angles array
result = self.data["joint_angle"][:, 0]
dots = (vect_to_vert * vect_from_vert).sum(1)
np.arccos(dots, out=result)
result[np.isnan(result)] = 0
np.arccos(dots, out=result, where=((dots <= 1) & (dots >= -1)))
# Assumes unit normal in the positive z direction
result *= np.sign(cross2d(vect_to_vert, vect_from_vert))
return result