kopia lustrzana https://github.com/glidernet/python-ogn-client
51 wiersze
2.0 KiB
Python
51 wiersze
2.0 KiB
Python
from datetime import datetime, timedelta, timezone
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FEETS_TO_METER = 0.3048 # ratio feets to meter
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FPM_TO_MS = FEETS_TO_METER / 60 # ratio fpm to m/s
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KNOTS_TO_MS = 0.5144 # ratio knots to m/s
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KPH_TO_MS = 0.27778 # ratio kph to m/s
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HPM_TO_DEGS = 180 / 60 # ratio between half turn per minute and degrees/s
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def parseAngle(dddmmhht):
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return float(dddmmhht[:3]) + float(dddmmhht[3:]) / 60
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def createTimestamp(time_string, reference_timestamp):
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if time_string[-1] == "z":
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dd = int(time_string[0:2])
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hh = int(time_string[2:4])
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mm = int(time_string[4:6])
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result = datetime(reference_timestamp.year,
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reference_timestamp.month,
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dd,
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hh, mm, 0,
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tzinfo=timezone.utc if reference_timestamp.tzinfo is not None else None)
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if result > reference_timestamp + timedelta(days=14):
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# shift timestamp to previous month
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result = (result.replace(day=1) - timedelta(days=5)).replace(day=result.day)
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elif result < reference_timestamp - timedelta(days=14):
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# shift timestamp to next month
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result = (result.replace(day=28) + timedelta(days=5)).replace(day=result.day)
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else:
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hh = int(time_string[0:2])
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mm = int(time_string[2:4])
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ss = int(time_string[4:6])
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result = datetime(reference_timestamp.year,
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reference_timestamp.month,
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reference_timestamp.day,
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hh, mm, ss,
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tzinfo=timezone.utc if reference_timestamp.tzinfo is not None else None)
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if result > reference_timestamp + timedelta(hours=12):
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# shift timestamp to previous day
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result -= timedelta(days=1)
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elif result < reference_timestamp - timedelta(hours=12):
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# shift timestamp to next day
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result += timedelta(days=1)
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return result
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