101 lines
3.3 KiB
JavaScript
101 lines
3.3 KiB
JavaScript
/*global google*/
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import GoogleMapReact from 'google-map-react';
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import React, { Component } from 'react';
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import DevicesService, { DeviceService } from '../devices/DeviceService'
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import { HubConnectionBuilder } from '@microsoft/signalr';
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const hub_url = '/hubs/devices';
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const method_name = 'NotifyDeviceAsync';
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export default class MapContainer extends Component {
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constructor(props) {
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super(props);
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this.state = {
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devices: [],
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center: {
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lat: 48.275939, lng: 21.469640
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},
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points: [],
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heatmapPoints: [],
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connection: null,
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}
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}
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componentDidMount() {
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const service = new DeviceService();
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service.getall().then(result => {
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this.setState({ devices: result })
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}).catch(ex => {
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console.log(ex)
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});
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const newConnection = new HubConnectionBuilder()
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.withUrl(hub_url)
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.withAutomaticReconnect()
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.build();
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this.setState({ connection: newConnection });
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newConnection.start()
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.then(result => {
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console.log('Hub Connected!');
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newConnection.on(method_name, (id, date, prob) => {
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this.state.points.push({ id, date, prob });
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//console.log(method_name + " recieved: [id: " + id + ", date: " + date + ", prob: " + prob + "]");
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if (prob > 0.5) {
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var device = this.state.devices.filter(function (x) { return x.id === id })[0]
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var newPoint = { lat: device.coordinates.latitude, lng: device.coordinates.longitude };
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this.setState({
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heatmapPoints: [...this.state.heatmapPoints, newPoint ]
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});
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if (this._googleMap !== undefined) {
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const point = { location: new google.maps.LatLng(newPoint.lat, newPoint.lng), weight: prob };
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this._googleMap.heatmap.data.push(point)
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}
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}
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});
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})
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.catch(e => console.log('Hub Connection failed: ', e));
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}
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componentWillUnmount() {
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if (this.state.connection) {
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this.state.connection.off(method_name);
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}
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}
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render() {
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const heatMapData = {
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positions: this.state.heatmapPoints,
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options: {
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radius: 50,
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opacity: 0.6,
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}
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}
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const mapOptions = {
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overviewMapControl: true,
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mapTypeId: 'terrain'
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}
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return (
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<div style={{ height: '91vh', width: '100%' }}>
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<GoogleMapReact
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bootstrapURLKeys={{
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key: ["AIzaSyCZ51VFfxqZ2GkCmVrcNZdUKsM0fuBQUCY"],
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libraries: ['visualization']
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}}
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ref={(el) => this._googleMap = el}
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options={mapOptions}
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defaultZoom={18}
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heatmapLibrary={true}
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heatmap={heatMapData}
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defaultCenter={this.state.center}>
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</GoogleMapReact>
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</div>
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);
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}
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} |