from ctypes import *
import os
import sys
import time
from math import atan2
from pprint import pprint

xlib = cdll.LoadLibrary("libX11.so.6")
rr = cdll.LoadLibrary("libXrandr.so.2")

def get_rotation():
    f = open("/sys/class/i2c-adapter/i2c-3/3-001d/coord", 'r' )
    coords = [int(w) for w in f.readline().split()]
    f.close()
    return coords

print get_rotation()

def rotate(angle):
    rr.XRRSetScreenConfigAndRate(display,config,root,size,angle,rate,timestamp)

display = xlib.XOpenDisplay(os.getenv("DISPLAY"))
screen = xlib.XDefaultScreen(display)
root = xlib.XDefaultRootWindow(display, screen)

class XRRScreenConfiguration(Structure):
   pass

gsi = rr.XRRGetScreenInfo
gsi.restype = POINTER(XRRScreenConfiguration)
config = gsi(display, root)

current_time = c_ulong()
rr.XRRTimes.restpye = c_ulong
timestamp = rr.XRRTimes(display, screen, byref(current_time))

xccr = rr.XRRConfigCurrentRate
xccr.restype = c_int
rate = xccr(config)

rotation = c_ushort()
size = rr.XRRConfigCurrentConfiguration(config, byref(rotation))

while True:
    [x,y,z] = get_rotation()
    print x,y,z
    if y < -500:
        rotate(1)
    elif y > 500:
        rotate(4)

    elif x < -500:
        rotate(2)
    elif x > 500:
        rotate(8)

    time.sleep(1)