def getHrsInDayTime(self, start, end):
"Split up given time range by PTCS day and night time hours."
dur = TimeAgent.dtDiffHrs(start, end)
startDate = date(start.year, start.month, start.day)
#rise, set = self.sun.getRiseSet(date1)
# cast a wide net: compute the rise and set times for any days
# that might be covered by the given time range
days = (end - start).days + 2
dayTimes = []
for day in range(days):
dt = startDate + timedelta(days = day)
dayTimes.append(self.sun.getPTCSRiseSet(dt))
# where does our given time range intersect with day time?
ints = AnalogSet.intersects([dayTimes, [(start, end)]])
if len(ints) > 0:
# some day time
day = 0.0
for intersection in ints:
td = intersection[1] - intersection[0]
day += TimeAgent.timedelta2frachours(td)
# the rest must be night time
night = abs(dur - day)
else:
# our range is all night time.
day = 0.0
night = dur
return (day, night)
def getHrsInGC(self, start, end):
"Split up given time range by Galactic Center overlap."
dur = TimeAgent.dtDiffHrs(start, end)
# convert local time range to LST range
lstStart = sla.Absolute2RelativeLST(start)
lstEnd = sla.Absolute2RelativeLST(end)
# be simplistic about the overalp
if lstEnd < lstStart:
lstEnd += 24.0
gcHrs, nonGcHrs = self.findOverlap((lstStart, lstEnd), self.gcHrs, dur)
return (gcHrs, nonGcHrs)
