def query_polygon(self, event, context):
hexagons = h3.polyfill(event['geometry'],
event['resolution'],
geo_json_conformant=True)
if event['compact']:
hexagons = h3.compact(hexagons)
processes = []
parent_connections = []
for item in hexagons:
parent_conn, child_conn = Pipe()
parent_connections.append(parent_conn)
process = Process(target=self.query_cell_wrapper,
args=(item, child_conn))
processes.append(process)
for process in processes:
process.start()
for process in processes:
process.join()
cities = []
for parent_connection in parent_connections:
for city in parent_connection.recv()[0]:
if city not in cities:
cities.append(city)
resp = {'statusCode': 200, 'body': json.dumps({'cities': cities})}
return resp
def test_compact_and_uncompact(self):
hexagons = h3.polyfill(
{
'type':
'Polygon',
'coordinates': [
[
[37.813318999983238, -122.4089866999972145], [
37.7866302000007224, -122.3805436999997056
], [37.7198061999978478, -122.3544736999993603], [
37.7076131999975672, -122.5123436999983966
], [37.7835871999971715, -122.5247187000021967],
[37.8151571999998453, -122.4798767000009008]
]
]
}, 9
)
compactedHexagons = h3.compact(hexagons)
self.assertEqual(
len(compactedHexagons), 209,
'got an appropriate number of hexagons back'
)
uncompactedHexagons = h3.uncompact(compactedHexagons, 9)
self.assertEqual(
len(uncompactedHexagons), 1253,
'got an appropriate number of hexagons back'
)
def test_compact_malformed_input(self):
with pytest.raises(Exception) as e_info:
h3.compact([
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
'89283082813ffff',
])
self.assertTrue(isinstance(e_info.value, Exception))
def test_compact_and_uncompact_nothing(self):
compactedNothing = h3.compact([])
self.assertEqual(len(compactedNothing), 0, 'still nothing')
uncompactedNothing = h3.uncompact([], 9)
self.assertEqual(len(uncompactedNothing), 0, 'still nothing')
