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from manimlib.imports import *
import numpy as np
def curl(coordinate):
x,y = coordinate[:2]
return np.array([
-y,
x,
0
])
class Subtle(Scene):
def construct(self):
vf1 = VectorField(curl)
pinwheel = SVGMobject("geo").move_to(np.array([2, 0, 0])).scale(0.3).set_stroke(width = 0.3).set_color_by_gradient(["#adf802", YELLOW_C]).move_to(np.array([2.3, 0, 0]))
self.add(pinwheel)
label1 = TexMobject(r"\textit{Microscopic curl}").shift(3*DOWN).add_background_rectangle()
label2 = TexMobject(r"\textit{Macroscopic curl}").shift(3*DOWN)
ball1 = Dot(checkerboard_colors = [BLUE_E, PURPLE_E], resolution = [2,2], radius = 0.4).move_to(np.array([-1, -1, 0]))
ball2 = Sphere(checkerboard_colors = [BLUE_E, TEAL], resolution = [16, 16], radius = 0.3).move_to(np.array([2, 0, 0]))
circ = Circle(radius = 2)
self.add(vf1)
self.wait()
self.play(ShowCreation(pinwheel))
self.bring_to_front(pinwheel)
self.play(Rotating(pinwheel), ShowCreation(label1))
self.wait(2)
#self.add(ball1)
move_submobjects_along_vector_field(pinwheel, curl)
self.play(FadeOut(label1), ShowCreation(label2))
self.play(Indicate(label2))
self.wait(5)
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