1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
import json
import algorithms
import store
from lib import run_server, get, post, read_html
grids = None
nodes = None
unconnected_nodes = None
@get('/')
def index():
global nodes
global grids
global unconnected_nodes
nodes, grids, unconnected_nodes = store.extract_osm_nodes("linkoping.osm")
return read_html('templates/index.html')
@get('/favicon.ico')
def favicon():
with open("data/favicon.ico", "rb") as image:
read_image = image.read()
image_bytes = bytearray(read_image)
return image_bytes
@post('/shortest-path')
def shortest_path(body):
body = json.loads(body)
transport_mode = body['transport_mode']
relevant_grid = grids[transport_mode]
source_id = algorithms.grid_search(relevant_grid,
store.Node(-1, body['lat1'],
body['lng1']))
target_id = algorithms.grid_search(relevant_grid,
store.Node(-1, body['lat2'],
body['lng2']))
relevant_nodes = nodes[transport_mode]
path = algorithms.find_shortest_path(nodes[transport_mode], source_id, target_id)
response = {"path": [(relevant_nodes[node].lat, relevant_nodes[node].lng) for node in path]}
return json.dumps(response)
run_server()
|
