Put bubbles on your face (LED Glasses)

bubbleface.py

# SPDX-FileCopyrightText: Copyright (c) 2021 Randall Bohn (dexter)
#
# SPDX-License-Identifier: MIT
"""Bubbles on your face (LED Glasses)"""
# circup install adafruit_display_shapes
# circup install adafruit_fancyled
import random
import time
import displayio

from adafruit_display_shapes.circle import Circle
import adafruit_fancyled.adafruit_fancyled as fancy

import board
show_palette = True
if "display" in dir(board):
    display = board.DISPLAY
else:
    # LED Glasses
    import is31fl3741
    import framebufferio
    import busio
    # 
    from map import glassesmatrix_ledmap
    show_palette = False

    displayio.release_displays()
    i2c = busio.I2C(board.SCL, board.SDA, frequency=10000000)
    frame = is31fl3741.IS31FL3741(
        width=54, height=15,
        i2c=i2c, scale=True, gamma=True,
        mapping=glassesmatrix_ledmap)
    frame.brightness=0.2
    display = framebufferio.FramebufferDisplay(frame, auto_refresh=True)


splash = displayio.Group()
display.show(splash)

hotwheel = [
    fancy.CRGB(32,0,0),
    fancy.CRGB(240,0,0),
    fancy.CRGB(32,240,0),
    fancy.CRGB(24,24,255),
    fancy.CRGB(128,255,240)]

ncolors=64
spectrum = displayio.Palette(ncolors)
def fill_palette(palette, gradient):
    n = len(palette)
    for c in range(n):
        color = fancy.palette_lookup(gradient, c/n)
        palette[c] = color.pack()
    return palette
fill_palette(spectrum, hotwheel)

# make a bitmap to display colors in spectrum
if show_palette:
    bitmap = displayio.Bitmap(ncolors,24, ncolors)
    for x in range(ncolors):
        for y in range(24):
            bitmap[x,y]=x
    tg = displayio.TileGrid(bitmap, pixel_shader=spectrum)
    splash.append(tg)

bubbles = displayio.Group()
for _ in range(24):
    x = random.randrange(0,display.width)
    y = random.randrange(0,display.height)
    r = random.randrange(4,8)
    color=random.choice(spectrum)
    #bubbles.append(Circle(x,y,r,fill=0,stroke=1,outline=color))
    bubbles.append(Circle(x,y,r,fill=color))

splash.append(bubbles)

def herd(group):
    "Do bubbles travel in herds?"
    for shape in group:
        shape.x += random.randint(-2,2)
        if shape.x < -8: shape.x = display.width + 3
        if shape.x > display.width + 8: shape.x = -3
        shape.y += random.randint(-2,0)
        if shape.y < -9: shape.y = display.height + 26

# wait for a keystroke on the console
# You could also use `while True:`
from supervisor import runtime as RT
while not RT.serial_bytes_available:
    time.sleep(0.05)
    herd(bubbles)