ESP32 MicroPython loboris ILI9341 Line Art Demo

import display
import random
import utime

def draw(c, i):
    global tmpx, tmpy, incx, incy, x1, y1, x2, y2, bc
    tft.line(x1[i], y1[i], x2[i], y2[i], 0)
    tmpx += incx
    if (tmpx < 0 or tmpx > xmax):
        incx = -incx
        tmpx += incx
    tmpy += incy
    if (tmpy < 0 or tmpy > ymax):
        incy = -incy
        tmpy += incy
    x1[i] = x2[i]
    y1[i] = y2[i]
    x2[i] = tmpx
    y2[i] = tmpy
    bc[i] = c
    tft.line(x1[i], y1[i], x2[i], y2[i], bc[i])

tft = display.TFT()
tft.init(0, mosi=23, miso=19, clk=18, cs=5, dc=17, rst_pin=16, speed=40000000, bgr=True, rot=1)
tft.set_bg(tft.BLACK)
tft.clear()

random.seed(utime.ticks_ms())
LINES = 80
xmax = 320
ymax = 240
x1 = []
y1 = []
x2 = []
y2 = []
bc = []

for i in range(LINES):
    x1.append(0)
    y1.append(0)
    x2.append(0)
    y2.append(0)
    bc.append(0)

tmpx = random.randint(0, xmax)
tmpy = random.randint(0, ymax)

while True:
    c = random.randint(0, 16777215)
    incx = random.randint(0, 13) - 6
    incy = random.randint(0, 13) - 6
    for i in range(LINES):
        draw(c, i)
        utime.sleep(0.02)