82 lines
2.2 KiB
Python
82 lines
2.2 KiB
Python
import overpy
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import math
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import workers.val
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from classes.httpclient import HTTPClient
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def getOSM(lat, lon, distance = 1000):
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query = """[out:json];
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(
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node
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(around:%i,%f,%f)
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["railway"~"tram_stop|station|subway"]
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[name];
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>;
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node
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(around:%i,%f,%f)
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["highway"="bus_stop"]
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[name];
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>;);
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out;
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""" % (distance, lat, lon, distance, lat, lon)
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endpoint = "https://overpass.kumi.systems/api/interpreter"
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json = HTTPClient().post(endpoint, data={"data": query}).text
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res = overpy.Overpass().parse_json(json)
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return res.nodes
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def cDistance(lat1, lon1, lat2, lon2):
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lat1, lon1, lat2, lon2 = map(math.radians, [lat1, lon1, lat2, lon2])
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dila = lat2 - lat1
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dilo = lon2 - lon1
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diff = 2 * math.asin(math.sqrt(math.sin(dila/2) ** 2 + math.cos(lat1) * math.cos(lat2) * math.sin(dilo/2) ** 2))
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dis = diff * 6371000
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return dis
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def getStations(nodes, distance = 1000, lat = None, lon = None):
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unodes = list(set([node.tags["alt_name"].split(",")[0] if "alt_name" in node.tags and len(node.tags["alt_name"].split(",")[0]) > len(node.tags["name"]) else node.tags["name"] for node in nodes]))
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for node in unodes:
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for station in workers.val.validateName(node):
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if lat and lon:
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idistance = cDistance(station.lat(), station.lon(), lat, lon)
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if idistance < distance:
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station.distance = idistance
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yield station
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break
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else:
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yield station
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break
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def findStations(lat, lon, distance = 1000, validate = True):
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stations = list(getStations(getOSM(lat, lon, distance), distance, lat if validate else None, lon if validate else None))
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if validate:
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return sorted(stations, key = lambda station: station.distance)
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return stations
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def worker(lat, lon, distance = 1000, json = False):
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outtext = """{
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"stations": [
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""" if json else """<?xml version="1.0" encoding="UTF-8"?>
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<stations>
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"""
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for station in findStations(lat, lon, distance):
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outtext += ",\n" if (json and not outtext.strip()[-1] == "[") else ""
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station.distance = station.distance or int(cDistance(station.lat(), station.lon(), lat, lon))
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outtext += station.json(2, distance = True) if json else station.xml(1, distance = True)
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outtext += "\n" if not json else ""
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outtext += """
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]
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}""" if json else "</stations>"
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return outtext
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