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get_smooth_quadratic_bezier_handle_points edge case for 2 points

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Grant Sanderson 2021-08-21 17:07:49 -07:00
parent 0787c4f362
commit 9a78d13212
1 changed files with 3 additions and 0 deletions
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3
manimlib/utils/bezier.py
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@ -4,6 +4,7 @@ import numpy as np
from manimlib.utils.simple_functions import choose
from manimlib.utils.space_ops import find_intersection
from manimlib.utils.space_ops import cross2d
from manimlib.utils.space_ops import midpoint
CLOSED_THRESHOLD = 0.001
@ -130,6 +131,8 @@ def get_smooth_quadratic_bezier_handle_points(points):
another that would produce a parabola passing through P0, call it smooth_to_left,
and use the midpoint between the two.
"""
if len(points) == 2:
return midpoint(*points)
smooth_to_right, smooth_to_left = [
0.25 * ps[0:-2] + ps[1:-1] - 0.25 * ps[2:]
for ps in (points, points[::-1])