How can I make a fast pixel-changing animation widget in Python 3?

Question

What I want:

I want an animation widget with fast display¹ generation (meaning the generation time should be smaller than 20 seconds) and with a special function to run pixel-changing animations with very small run time (meaning the run time should be smaller than 20 ms) in Python 3.

Wrong method:

The simplest method is a pixel panel. But it is generating very slowly².

This is the code:

import tkinter as t

tk = t.Tk()
n = 1100
k = 900 # Display sizes
canvas = t.Canvas(tk, width =k, height = n)
canvas.grid(column = 0, row = 0)
ids = [] # Pixel identifiers
for i in range(n):
    id2 = []
    for j in range(k):
        id2.append(cv.create_rectangle(i,j,i+1,j+1,outline = "black"))
    ids.append(id2)
def animation(animation_list): # Animation function,animation_list - list of coords and colors tuples(as example,[(1, 0, "red"), (2, 1, "green")].
    global canvas
    for x, y, color in animation_list:
        canvas.itemconfig(ids[x][y],outline = color)

¹ Sizes are 1100×900 pixels (990k pixels)
² Debug (not debugger) shows 22 seconds, but it took more than a minute, and the window is lagging.

Asked By: George

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Source

Answer 1

I found it! Thanks to Mike-SMT for idea!
This is my code:

import os
import pygame as pg
from random import *
#It is used as library

main_dir = os.path.split(os.path.abspath(__file__))[0]
data_dir = os.path.join(main_dir, "data")


def show(image):# Shows surface
    screen = pg.display.get_surface()
    screen.fill((255, 255, 255))
                
    screen.blit(image, (0, 0))
    pg.display.flip()


def main():#Reacts on window closing.
    pg.init()

    pg.display.set_mode((255, 255))
    surface = pg.Surface((255, 255))

    pg.display.flip()
    while 1:
        for ev in pg.event.get():
            if ev.type == pg.QUIT:
                brk = 0
                pg.display.quit()
def animate(pixels): #Animation function.pixels is array of arrays as [x,y,(r,g,b)]
    global surface
    ar = pg.PixelArray(surface)
    for x,y,color in pixels:          
        ar[x,y] = color
    del ar
    show(surface)
main()

It solves the problem, because it is fast and has animation function, as needed.

Answered By: George

How can I make a fast pixel-changing animation widget in Python 3?

Question:

What I want:

Wrong method:

Answers: