def get(self):
stream_obj = Stream()
print "mViewNearbyImages:: starts~"
loc_str = self.request.get("loc_str")
loc = loc_str.split('_')
lat = float(loc[0])
lon = float(loc[1])
print "mViewNearbyImages:: get location", lat, lon
images = Image.query().fetch()
sorted_imgs = sorted(images, key=lambda image: image.date, reverse=True)
max_idx = len(sorted_imgs)
print "mViewNearbyImages:: len(sorted_imgs)=", max_idx
if max_idx >= NUM_IMG_PER_PAGE:
max_idx = NUM_IMG_PER_PAGE
img_url_lst = list()
stream_id_lst = list()
distance_lst = list()
R = 6373.0
r_m_lat = radians(lat)
r_m_lon = radians(lon)
for idx in xrange(0, max_idx):
image = sorted_imgs[idx]
img_url_lst.append(SERVICE_URL+"/view_photo/"+str(image.blob_key))
stream_id_lst.append(stream_obj.get_stream_id_by_img_id(image.img_id))
img_lat = radians(image.location.lat)
img_lon = radians(image.location.lon)
dlat = r_m_lat - img_lat
dlon = r_m_lon - img_lon
a = (sin(dlat / 2)) ** 2 + cos(r_m_lat) * cos(img_lat) * (sin(dlon / 2)) ** 2
c = 2 * atan2(sqrt(a), sqrt(1 - a))
distance = R * c
distance_lst.append(distance)
print "mViewNearbyImages:: ldistance_lst=", str(distance_lst)
self.respond(img_url_lst=img_url_lst, stream_id_lst=stream_id_lst, distance_lst=distance_lst, status="success")
