python - 如何在 Matplotlib 中与线程一起执行动画？

Question

我想通过线程每 0.25 秒更改一次圆圈颜色，并通过 matplotlib 动画实时显示结果。这是我的代码(我什至不明白为什么不执行动画):

import threading
import time

import matplotlib.pyplot as plt
from matplotlib.patches import Circle
from matplotlib.animation import FuncAnimation

def apply_color_shift(fig, circle):

    def func():
        for i in range(100):
            circle.set_fc((i/100, 0, 0, 1))
            time.sleep(0.25)
            print("something")
    anim = threading.Thread(target = func)

    def do_nothing(frame):
        print("ANIM")
        fig.show()
    FuncAnimation(fig, do_nothing, frames = [0.1*i for i in range(100)])

    anim.start()
    plt.show()

fig, ax = plt.subplots()
ax.axis('square')

c = Circle(xy = (0, 0), color = "red")
ax.add_patch(c)
ax.set_xlim([-50, 50])
ax.set_ylim([-50, 50])

fig.show()
apply_color_shift(fig, c)

这里有什么问题，如何解决？

Answer 1

如果你想每0.25秒改变一次颜色，那应该是动画的间隔:

import matplotlib.pyplot as plt
from matplotlib.patches import Circle
from matplotlib.animation import FuncAnimation

fig, ax = plt.subplots()
ax.axis('square')

c = Circle(xy = (0, 0), color = "red")
ax.add_patch(c)
ax.set_xlim([-50, 50])
ax.set_ylim([-50, 50])

def change_color(i):
    c.set_fc((i/100, 0, 0, 1))

ani = FuncAnimation(fig, change_color, frames = range(100), interval=250)

plt.show()