import struct
import binascii
import sys
import math

def get_angles(v_a, v_b):
    ax, ay, az = v_a
    bx, by, bz = v_b

    az_k = math.atan2(bx - ax, by - ay)
    if az_k < 0:
        az_k += 2 * math.pi

    az = (az_k * 180) / math.pi

    el_k = math.sqrt(math.pow(bx - ax, 2) + math.pow(by - ay, 2))
    el = math.atan((bz - az) / el_k) * 180 / math.pi

    return (az, el)

ax, ay, az = [float(n) for n in sys.argv[1:4]]
bx, by, bz = [struct.unpack(">f", binascii.unhexlify(s))[0] for s in sys.argv[4:7]]

print(ax, ay, az)
print(bx, by, bz)

az, el = get_angles((ax, ay, az), (bx, by, bz))

el_s = binascii.hexlify(struct.pack(">f", el))

if len(el_s) < 8:
    el_s = "0" + el_s

az_s = binascii.hexlify(struct.pack(">f", az))
if len(az_s) < 8:
    az_s = "0" + az_s



print("el:", el, el_s)
print("az:", az, az_s)