CirclePolygon_anim.py

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import CirclePolygon
import matplotlib.animation as animation
from IPython.display import HTML

fig, ax = plt.subplots(figsize=(6,6),subplot_kw={'aspect': 'equal'})
arttists=[]
def update(num):
    if len(arttists)>0:
        arttists.pop().remove()
    cp=CirclePolygon(xy=(0,0), radius=5, resolution=num+3,fc="C2",alpha=0.5)
    art=ax.add_artist(cp)
    arttists.append(art)
    ax.set_title("resolution="+str(num+3)+"")

ax.set_xlim(-6, 6)
ax.set_ylim(-6, 6)
ax.grid()
ax.set_axisbelow(True)
ani = animation.FuncAnimation(fig, update, interval = 200, frames = 28)
ani.save('cp_animation.mp4', writer="ffmpeg",dpi=120)
HTML(ani.to_html5_video())

fig, ax = plt.subplots(figsize=(6,6),subplot_kw={'aspect': 'equal'})
def update(num):
    cp=CirclePolygon(xy=(0,0), radius=5, resolution=num+3,fc="C6",alpha=.1)
    art=ax.add_artist(cp)

ax.set_xlim(-6, 6)
ax.set_ylim(-6, 6)
ax.grid()
ax.set_axisbelow(True)
ani = animation.FuncAnimation(fig, update, interval = 200, frames = 28)
ani.save('cp_animation2.mp4', writer="ffmpeg",dpi=120)
HTML(ani.to_html5_video())

#version
import matplotlib
print(matplotlib.__version__)
3.3.1
print(np.__version__)
1.19.1