class Ground(object):
"""Wrapper class for the pyephem ground observer object"""
def __init__(self, longitude, latitude, elevation, offset=0):
self.observer = ephem.Observer()
deg180 = 180 * ephem.degree
deg90 = 90 * ephem.degree
if longitude > deg180 or longitude < -1 * deg180:
raise ValueError('Invalid longitude')
if latitude > deg90 or latitude < -1 * deg90:
raise ValueError('Invalid latitude')
if elevation < 0 or elevation > 8848: # height of Mt. Everest
raise ValueError('Invalid elevation')
# Set the SunriseSunset object
deg_long = longitude / ephem.degree
deg_lat = latitude / ephem.degree
self.ssc = SunriseSunset(dt=datetime.datetime.now(),
longitude=deg_long, latitude=deg_lat,
localOffset=offset)
self.observer.long = longitude
self.observer.lat = latitude
self.observer.elev = elevation
# Accessors
def longitude(self):
return self.observer.long
def latitude(self):
return self.observer.lat
def elevation(self):
return self.observer.elev
def set_date(self, date):
self.observer.date = date
def next_pass(self, sat):
"""Wrapper for next_pass() method"""
return self.observer.next_pass(sat)
def sunrise_sunset(self, arg=None):
"""
Wrapper for calculate() method.
@param: arg can be passed on to the calculate() method
"""
if arg is None:
return self.ssc.calculate()
else:
return self.ssc.calculate(arg)
def __init__(self, longitude, latitude, elevation, offset=0):
self.observer = ephem.Observer()
deg180 = 180 * ephem.degree
deg90 = 90 * ephem.degree
if longitude > deg180 or longitude < -1 * deg180:
raise ValueError('Invalid longitude')
if latitude > deg90 or latitude < -1 * deg90:
raise ValueError('Invalid latitude')
if elevation < 0 or elevation > 8848: # height of Mt. Everest
raise ValueError('Invalid elevation')
# Set the SunriseSunset object
deg_long = longitude / ephem.degree
deg_lat = latitude / ephem.degree
self.ssc = SunriseSunset(dt=datetime.datetime.now(),
longitude=deg_long, latitude=deg_lat,
localOffset=offset)
self.observer.long = longitude
self.observer.lat = latitude
self.observer.elev = elevation
