def get_instance(geo_coord=None, earth_coord=None, planet=None, time=None):
'''
Returns a RaDec instance given either geocentric coordinates
or heliocentric coordinates with a planet and the time.
'''
if geo_coord == None and earth_coord == None:
raise Exception("must provide geo_coords or helio_coords")
if geo_coord != None:
raRad = math.atan2(geo_coord.y, geo_coord.x)
if (raRad < 0): raRad += math.pi * 2.0
decRad = math.atan2(geo_coord.z,
math.sqrt(geo_coord.x * geo_coord.x + \
geo_coord.y * geo_coord.y))
return RaDec(radians_to_degrees(raRad), radians_to_degrees(decRad))
else:
if planet.id == planet_enum.MOON:
return planet.calculate_lunar_geocentric_location(time)
coords = None
if planet.id == planet_enum.SUN:
# Invert the view, since we want the Sun in earth coordinates, not the Earth in sun
# coordinates.
coords = HeliocentricCoordinates(earth_coord.radius,
earth_coord.x * -1.0,
earth_coord.y * -1.0,
earth_coord.z * -1.0)
else:
coords = hc_get_instance(None, planet, time)
coords.subtract(earth_coord)
equ = coords.calculate_equitorial_coords()
return calculate_ra_dec_dist(equ)
def get_instance(geo_coord=None, earth_coord=None,
planet=None, time=None):
'''
Returns a RaDec instance given either geocentric coordinates
or heliocentric coordinates with a planet and the time.
'''
if geo_coord == None and earth_coord == None:
raise Exception("must provide geo_coords or helio_coords")
if geo_coord != None:
raRad = math.atan2(geo_coord.y, geo_coord.x)
if (raRad < 0): raRad += math.pi * 2.0
decRad = math.atan2(geo_coord.z,
math.sqrt(geo_coord.x * geo_coord.x + \
geo_coord.y * geo_coord.y));
return RaDec(radians_to_degrees(raRad), radians_to_degrees(decRad))
else:
if planet.id == planet_enum.MOON:
return planet.calculate_lunar_geocentric_location(time)
coords = None
if planet.id == planet_enum.SUN:
# Invert the view, since we want the Sun in earth coordinates, not the Earth in sun
# coordinates.
coords = HeliocentricCoordinates(earth_coord.radius, earth_coord.x * -1.0,
earth_coord.y * -1.0, earth_coord.z * -1.0)
else:
coords = hc_get_instance(None, planet, time)
coords.subtract(earth_coord)
equ = coords.calculate_equitorial_coords()
return calculate_ra_dec_dist(equ)
def __init__(self, model, controller_group, shared_prefs, screen_height):
'''
Constructor
'''
self.model = model
self.control_group = controller_group
self.shared_prefs = shared_prefs
self.size_times_rads_to_degs = radians_to_degrees(screen_height)
self.allow_rotation = shared_prefs.ALLOW_ROTATION
def __init__(self, model, controller_group, shared_prefs, screen_height):
'''
Constructor
'''
self.model = model
self.control_group = controller_group
self.shared_prefs = shared_prefs
self.size_times_rads_to_degs = radians_to_degrees(screen_height)
self.allow_rotation = shared_prefs.ALLOW_ROTATION
def distance_from(self, lat_long):
other_point = GC.get_instance(lat_long.longitude, lat_long.latitude)
this_point = GC.get_instance(self.longitude, self.latitude)
cos_Theta = cosine_similarity(this_point, other_point)
return radians_to_degrees(math.acos(cos_Theta))
def distance_from(self, lat_long):
other_point = GC.get_instance(lat_long.longitude, lat_long.latitude)
this_point = GC.get_instance(self.longitude, self.latitude)
cos_Theta = cosine_similarity(this_point, other_point)
return radians_to_degrees(math.acos(cos_Theta))
