convert touch position

def touch2screen(w, h, o, x, y):
    '''convert touch position'''
    if o == 0:
        return x, y
    elif o == 1: # landscape-right
        return y, w-x
    elif o == 2: # upsidedown
        return w-x, h-y
    elif o == 3: # landscape-left
        return h-y, x
    return x, y