'''
Mission 11 - Spirit Level
Objective 6
'''
from codex import *
from time import sleep
import math

CENTER = 120
display.fill(WHITE)
display.draw_line(CENTER, 0, CENTER, 105, BLACK)
display.draw_line(CENTER, 135, CENTER, 239, BLACK)

x = CENTER

while True:
    val = accel.read()
    tilt_x = val[0]

    scaled = (tilt_x/16384)
    scaled = min(max(scaled, -1), 1)
    degrees = math.asin(scaled) * 180 / math.pi
    degrees = int(degrees)

    display.draw_circle(x, CENTER, 15, WHITE)
    x = CENTER + degrees
    display.draw_circle(x, CENTER, 15, ORANGE)
    sleep(0.2)