kopia lustrzana https://github.com/glidernet/python-ogn-client
45 wiersze
1.5 KiB
Python
45 wiersze
1.5 KiB
Python
import math
|
|
from datetime import datetime, timedelta
|
|
|
|
from ogn.parser.exceptions import AmbigousTimeError
|
|
|
|
|
|
kmh2kts = 0.539957
|
|
feet2m = 0.3048
|
|
ms2fpm = 196.85
|
|
|
|
kts2kmh = 1 / kmh2kts
|
|
m2feet = 1 / feet2m
|
|
fpm2ms = 1 / ms2fpm
|
|
|
|
|
|
def dmsToDeg(dms):
|
|
absDms = abs(dms)
|
|
d = math.floor(absDms)
|
|
m = (absDms - d) * 100 / 60
|
|
return d + m
|
|
|
|
|
|
def createTimestamp(hhmmss, reference):
|
|
packet_time = datetime.strptime(hhmmss, '%H%M%S').time()
|
|
timestamp = datetime.combine(reference, packet_time)
|
|
delta = timestamp - reference
|
|
|
|
# This function reconstructs the packet date from the timestamp and a reference time.
|
|
# delta vs. packet date:
|
|
# -24h -12h 0 +12h +24h
|
|
# |-------------------------|---------------------|------------------------|----------------------|
|
|
# [-] <-- tomorrow [---------today---------] [-------yesterday------]
|
|
|
|
if timedelta(hours=-12) <= delta <= timedelta(minutes=30):
|
|
# Packet less than 12h from the past or 30min from the future
|
|
return timestamp
|
|
elif delta < timedelta(hours=-23, minutes=-30):
|
|
# Packet from next day, less than 30min from the future
|
|
return datetime.combine(reference + timedelta(hours=+12), packet_time)
|
|
elif timedelta(hours=12) < delta:
|
|
# Packet from previous day, less than 12h from the past
|
|
return datetime.combine(reference + timedelta(hours=-12), packet_time)
|
|
else:
|
|
raise AmbigousTimeError(reference, packet_time)
|