Matplotlib equivalent of pygame flip

Question

I have a program with rapid animations which works perfectly under pygame, and for technical reasons, I need to do the same using only matplotlib or an other widespread modu

Answer 1

Given you talked about using widespread modules, here's a proof of concept using OpenCV. It runs pretty fast here, up to 250-300 generated frames per second. It's nothing too fancy, just to show that maybe if you're not using any plotting feature matplotlib shouldn't really be your first choice.

import sys                                                                                 
import time                                                                                
import numpy as np                                                                         
import cv2                                                                                 

if sys.version_info >= (3, 3):                                                             
    timer = time.perf_counter                                                              
else:                                                                                      
    timer = time.time                                                                      

def f(x, y):                                                                               
    return np.sin(x) + np.cos(y)                                                           

# ESC, q or Q to quit                                                                      
quitkeys = 27, 81, 113                                                                     
# delay between frames                                                                     
delay = 1                                                                                  
# framerate debug init                                                                     
counter = 0                                                                                
overflow = 1                                                                               
start = timer()                                                                            

x = np.linspace(0, 2 * np.pi, 400)                                                         
y = np.linspace(0, 2 * np.pi, 400).reshape(-1, 1)                                          

while True:                                                                                
    x += np.pi / 15.                                                                       
    y += np.pi / 20.                                                                       

    cv2.imshow("animation", f(x, y))                                                       

    if cv2.waitKey(delay) & 0xFF in quitkeys:                                              
        cv2.destroyAllWindows()                                                            
        break                                                                              

    counter += 1                                                                           
    elapsed = timer() - start                                                              
    if elapsed > overflow:                                                                 
        print("FPS: {:.01f}".format(counter / elapsed))                                    
        counter = 0                                                                        
        start = timer()