お星様 matplotlib animation

star.jl

# Jupyter Notebook で実行してください
# https://qiita.com/yoku_/items/11ac4ad1df349095655c の Python 実装が
# https://gist.github.com/genkuroki/f1480db0c035d4cb82d1d5ec6989b05d?short_path=c1a52fb 
# によって Julia によって移植され， 下記の実装は Julia 1.7 版です．

using PyPlot
using PyCall
anim = pyimport("matplotlib.animation")

t = range(0, stop=6π, length=60)
x = @. 2cos(t) + 5cos(2/3 * t)
y = @. 2sin(t) - 5sin(2/3 * t)

fig = figure(figsize=(5,5))
init() = (grid(ls=":"); xlim(-7.5, 7.5); ylim(-7.5, 7.5))
animate(i) =(clf(); init(); plot(x[1:i], y[1:i]))
ani = anim.FuncAnimation(fig, animate, frames=1:length(t), interval=1000/30)
@time ani_html = ani.to_jshtml()
clf()

sleep(0.1)
display("text/html", ani_html)