draw_time_test.py

import expyfun
import numpy as np
import matplotlib.pyplot as plt
plt.ion()


n_iter = 1000
times = np.zeros(n_iter)
with expyfun.ExperimentController('wait_test', output_dir=None, participant='',
                                  session='') as ec:
    ec.wait_secs(0.5)
    for ii in range(n_iter):
        obj = expyfun.visual.Circle(ec, radius=(n_iter - float(ii)) / n_iter)
        start = ec.current_time
        obj.draw()
        times[ii] = ec.current_time - start
        #ec.flip()

plt.plot(1e3 * times, 'o')
plt.xlabel('Trial')
plt.ylabel('Timing delay (ms)')