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from __future__ import print_function
"""
Demonstrate/test the idle and timeout API
WARNING: idle_event is deprecated. Use the animations module instead.
This is only tested on gtk so far and is a prototype implementation
"""
import numpy as np
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
t = np.arange(0.0, 2.0, 0.01)
y1 = np.sin(2*np.pi*t)
y2 = np.cos(2*np.pi*t)
line1, = ax.plot(y1)
line2, = ax.plot(y2)
N = 100
def on_idle(event):
on_idle.count += 1
print('idle', on_idle.count)
line1.set_ydata(np.sin(2*np.pi*t*(N - on_idle.count)/float(N)))
event.canvas.draw()
# test boolean return removal
if on_idle.count == N:
return False
return True
on_idle.cid = None
on_idle.count = 0
fig.canvas.mpl_connect('idle_event', on_idle)
plt.show()
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