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Actually ensure get_joint_angle works for start_new_path case

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This commit is contained in:
Grant Sanderson
2023-01-10 18:33:49 -08:00
parent 0205a37209
commit b967c04c2c
1 changed files with 8 additions and 6 deletions
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14
manimlib/mobject/types/vectorized_mobject.py
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@ -1046,15 +1046,16 @@ class VMobject(Mobject):
self.needs_new_joint_angles = False
points = self.get_points()
append_one = False
if(len(points) % 3 == 1):
points = points[:-1]
append_one = True
self.data["joint_angle"] = resize_array(self.data["joint_angle"], len(points))
if(len(points) < 3):
return self.data["joint_angle"]
append_one = False
if(len(points) % 3 == 1):
points = points[:-1]
append_one = True
# Unit tangent vectors
a0, h, a1 = points[0::3], points[1::3], points[2::3]
@ -1078,7 +1079,7 @@ class VMobject(Mobject):
dots = (vect_to_vert * vect_from_vert).sum(1)
angle = np.arccos(arr_clip(dots, -1, 1))
sgn = np.sign(cross2d(vect_to_vert, vect_from_vert))
self.data["joint_angle"][:len(angle), 0] = sgn * angle
self.data["joint_angle"][:, 0] = sgn * angle
# If a given anchor point sits at the end of a curve,
# we set its angle equal to 0
@ -1092,7 +1093,7 @@ class VMobject(Mobject):
self.data["joint_angle"][2:-1:3][mis_matches] = 0
if append_one:
self.data["joint_angle"] = np.hstack([self.data["joint_angle"], 0])
self.data["joint_angle"] = np.vstack([self.data["joint_angle"], np.zeros((1, 1))])
return self.data["joint_angle"]
@ -1103,6 +1104,7 @@ class VMobject(Mobject):
if refresh:
self.refresh_triangulation()
self.refresh_joint_angles()
self.get_joint_angles()
return wrapper
@triggers_refreshed_triangulation