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add greyline calculation

This commit is contained in:
Jakob Ketterl 2020-01-19 18:34:37 +01:00
parent 877f0e4c28
commit 1f68ecd9f4
1 changed files with 36 additions and 9 deletions
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45
owrx/service/schedule.py
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@ -128,6 +128,8 @@ class StaticSchedule(TimerangeSchedule):
class DaylightSchedule(TimerangeSchedule):
greyLineTime = timedelta(hours=1)
def __init__(self, scheduleDict):
self.schedule = scheduleDict
@ -137,13 +139,14 @@ class DaylightSchedule(TimerangeSchedule):
degtorad = math.pi / 180
radtodeg = 180 / math.pi
nDays = date.timetuple().tm_yday #Number of days since 01/01
#Number of days since 01/01
days = date.timetuple().tm_yday
# Longitudinal correction
longCorr = 4 * lng
# calibrate for solstice
b = 2 * math.pi * (nDays - 81) / 365
b = 2 * math.pi * (days - 81) / 365
# Equation of Time Correction
eoTCorr = 9.87 * math.sin(2 * b) - 7.53 * math.cos(b) - 1.5 * math.sin(b)
@ -152,10 +155,10 @@ class DaylightSchedule(TimerangeSchedule):
solarCorr = longCorr + eoTCorr
# Solar declination
delta = math.asin(math.sin(23.45 * degtorad) * math.sin(b))
declination = math.asin(math.sin(23.45 * degtorad) * math.sin(b))
sunrise = 12 - math.acos(-math.tan(lat * degtorad) * math.tan(delta)) * radtodeg / 15 - solarCorr / 60
sunset = 12 + math.acos(-math.tan(lat * degtorad) * math.tan(delta)) * radtodeg / 15 - solarCorr / 60
sunrise = 12 - math.acos(-math.tan(lat * degtorad) * math.tan(declination)) * radtodeg / 15 - solarCorr / 60
sunset = 12 + math.acos(-math.tan(lat * degtorad) * math.tan(declination)) * radtodeg / 15 - solarCorr / 60
midnight = datetime.combine(date, datetime.min.time())
sunrise = midnight + timedelta(hours=sunrise)
@ -164,24 +167,48 @@ class DaylightSchedule(TimerangeSchedule):
return sunrise, sunset
def getEntry(self, t, profile):
def getEntry(self, t, profile, useGreyline):
now = datetime.utcnow()
date = now.date()
if t == "day":
sunrise, sunset = self.getSunTimes(date)
if sunset < now:
sunrise, sunset = self.getSunTimes(date + timedelta(days=1))
return DatetimeScheduleEntry(sunrise, sunset, profile)
if useGreyline:
sunrise += DaylightSchedule.greyLineTime
sunset -= DaylightSchedule.greyLineTime
return [ DatetimeScheduleEntry(sunrise, sunset, profile) ]
elif t == "night":
sunrise, _ = self.getSunTimes(date)
_, sunset = self.getSunTimes(date - timedelta(days=1))
if sunrise < now:
sunrise, _ = self.getSunTimes(date + timedelta(days=1))
_, sunset = self.getSunTimes(date)
return DatetimeScheduleEntry(sunset, sunrise, profile)
if useGreyline:
sunrise -= DaylightSchedule.greyLineTime
sunset += DaylightSchedule.greyLineTime
return [ DatetimeScheduleEntry(sunset, sunrise, profile) ]
elif t == "greyline":
sunrise, sunset = self.getSunTimes(date)
if sunrise < now + DaylightSchedule.greyLineTime:
sunrise, _ = self.getSunTimes(date + timedelta(days=1))
if sunset < now + DaylightSchedule.greyLineTime:
_, sunset = self.getSunTimes(date + timedelta(days=1))
return [
DatetimeScheduleEntry(
sunrise - DaylightSchedule.greyLineTime, sunrise + DaylightSchedule.greyLineTime, profile
),
DatetimeScheduleEntry(
sunset - DaylightSchedule.greyLineTime, sunset + DaylightSchedule.greyLineTime, profile
),
]
def getEntries(self):
return [self.getEntry(t, profile) for t, profile in self.schedule.items()]
# greyline is optional, it its set it will shorten the other profiles
useGreyline = "greyline" in self.schedule
entries = [e for t, profile in self.schedule.items() for e in self.getEntry(t, profile, useGreyline)]
logger.debug([str(e) for e in entries])
return entries
class ServiceScheduler(object):