def effect():
# trigger effect
for i in range(steps_per * 8):
for y in range(8):
for x in range(8):
r, g, b = background(x, y, i)
r = int(max(0, min(255, r)))
g = int(max(0, min(255, g)))
b = int(max(0, min(255, b)))
rainbow.set_pixel(x, y, r, g, b)
rainbow.show()
time.sleep(0.01)
for i in range(200):
v = (math.sin(i / 6.0) + 1.0) / 2.0
for y in range(8):
for x in range(8):
r = 0
b = 0
g = 100
g *= tick_mask[y][x]
g *= v
r = int(max(0, min(255, r)))
g = int(max(0, min(255, g)))
b = int(max(0, min(255, b)))
rainbow.set_pixel(x, y, r, g, b)
rainbow.show()
time.sleep(0.02)
def step():
global i
i = 0 if i>=100*len(ASCIIPIC) else i+1 # avoid overflow
for h in range(height):
for w in range(width):
hPos = (i+h) % len(ASCIIPIC)
chr = ASCIIPIC[hPos][w]
if chr == ' ':
rainbow.set_pixel(w, h, 0, 0, 0)
else:
rainbow.set_pixel(w, h, 255, 0, 0)
rainbow.show()
def setup():
global heights
heights = []
for b in range(0, 6):
heights.append(0)
uh.off()
for b in range(0, 8):
uh.set_pixel(0, b, 255, 255, 255)
for b in range(0, 8):
uh.set_pixel(7, b, 255, 255, 255)
for b in range(1, 7):
uh.set_pixel(b, 0, 255, 255, 255)
uh.show()
def update_display():
# keep track of the row we are updating
c = row_pointer
for h in range(height):
for w in range(width):
# val is between 50 and 255
val = rows[c][w]
# invert coordinates
rainbow.set_pixel((width - 1) - w, (height - 1) - h, val, val, val)
c += 1
if c > height - 1:
c = 0
rainbow.show()
def drop_ball():
ball_colour = [randint(100, 255), randint(100, 255), randint(100, 255)]
ball_column = randint(0, 5)
while heights[ball_column] == 7:
ball_column = randint(0, 5)
height = heights[ball_column]
ball_y = 7
uh.set_pixel(ball_column + 1, ball_y, ball_colour[0], ball_colour[1],
ball_colour[2])
uh.show()
dropcount = 6 - height
for y in range(0, dropcount):
uh.set_pixel(ball_column + 1, ball_y, 0, 0, 0)
ball_y -= 1
uh.set_pixel(ball_column + 1, ball_y, ball_colour[0], ball_colour[1],
ball_colour[2])
uh.show()
time.sleep(0.02)
heights[ball_column] += 1
def toggle(tog):
#toggle has been called determine state
if tog:
#randomise red, green and blue
r = randint(30, 255)
g = randint(30, 255)
b = randint(30, 255)
msg = "On!"
else:
#clear red, green and blue
r = 0
g = 0
b = 0
msg = "Off!"
#print the relevant message
print(msg, r, g, b)
#set the LEDs to the relevant lighting (all on/off)
for y in range(height):
for x in range(width):
rainbow.set_pixel(x, y, r, g, b)
rainbow.show()
#return the inverse boolean variable that was passed in
return not tog
def clear():
for y in range(8):
for x in range(8):
rainbow.set_pixel(x, y, 0, 0, 0)
rainbow.show()
import time, colorsys
import numpy as np
rainbow.brightness(0.5)
def make_gaussian(fwhm):
x = np.arange(0, 8, 1, float)
y = x[:, np.newaxis]
x0, y0 = 3.5, 3.5
fwhm = fwhm
gauss = np.exp(-4 * np.log(2) * ((x - x0)**2 + (y - y0)**2) / fwhm**2)
return gauss
while True:
fwhm = 5
gauss = make_gaussian(fwhm)
for y in range(8):
for x in range(8):
h = 0.1
s = 1.0
v = gauss[x, y]
rgb = colorsys.hsv_to_rgb(h, s, v)
r = int(rgb[0] * 255.0)
g = int(rgb[1] * 255.0)
b = int(rgb[2] * 255.0)
rainbow.set_pixel(x, y, r, g, b)
rainbow.show()
time.sleep(0.005)
def show(self):
rainbow.show()
