#!/usr/bin/python3

from omnia import leds
from random import randint
from time import sleep

strip = leds.OmniaStrip

def set_leds(br):
    for led in strip:
        st = led.state
        st.brightness = br
        st.autonomous = False
        led.set(st)

def continuous_brightness_change(start, step, stop, wait):
    for x in range(start, stop, step):
        set_leds(x)
        sleep(wait)

def inhale():
    print('inhaling')
    continuous_brightness_change(0, 30, 255, .1)
def exhale():
    print('exhaling')
    continuous_brightness_change(255, -30, 0, .1)

while True:
    inhale()
    exhale()