def draw(field):
""" Re-draw canvas in two steps: clear and draw """
canvas.delete("all")
for x, y in field:
x0 = origin_x + dx * x
y0 = origin_y + dy * y
canvas.create_rectangle(x0, y0, x0 + dx, y0 + dy, fill="black")
# re-draw canvas after delay with new field
canvas.after(delay, functools.partial(draw, advance(field)))
def draw(field, position, velocity):
''' Re-draw canvas in two steps: clear and draw '''
canvas.delete("all")
for (x, y), color in field.items():
x0 = origin_x + dx * x
y0 = origin_y + dy * y
canvas.create_rectangle(x0, y0, x0 + dx, y0 + dy,
fill="black" if color else "red")
# re-draw canvas after delay with new field
canvas.after(delay, functools.partial(draw, *advance(field, position, velocity)))