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| import Feature from 'ol/Feature.js';
import Geolocation from 'ol/Geolocation.js';
import Map from 'ol/Map.js';
import Point from 'ol/geom/Point.js';
import View from 'ol/View.js';
import {Circle as CircleStyle, Fill, Stroke, Style} from 'ol/style.js';
import {OSM, Vector as VectorSource} from 'ol/source.js';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer.js';
const view = new View({
center: [0, 0],
zoom: 2,
});
const map = new Map({
layers: [
new TileLayer({
source: new OSM(),
}),
],
target: 'map',
view: view,
});
const geolocation = new Geolocation({
trackingOptions: {
enableHighAccuracy: true,
},
projection: view.getProjection(),
});
function el(id) {
return document.getElementById(id);
}
el('track').addEventListener('change', function () {
geolocation.setTracking(this.checked);
});
geolocation.on('change', function () {
el('accuracy').innerText = geolocation.getAccuracy() + ' [m]';
el('altitude').innerText = geolocation.getAltitude() + ' [m]';
el('altitudeAccuracy').innerText = geolocation.getAltitudeAccuracy() + ' [m]';
el('heading').innerText = geolocation.getHeading() + ' [rad]';
el('speed').innerText = geolocation.getSpeed() + ' [m/s]';
});
geolocation.on('error', function (error) {
const info = document.getElementById('info');
info.innerHTML = error.message;
info.style.display = '';
});
const accuracyFeature = new Feature();
geolocation.on('change:accuracyGeometry', function () {
accuracyFeature.setGeometry(geolocation.getAccuracyGeometry());
});
const positionFeature = new Feature();
positionFeature.setStyle(
new Style({
image: new CircleStyle({
radius: 6,
fill: new Fill({
color: '#3399CC',
}),
stroke: new Stroke({
color: '#fff',
width: 2,
}),
}),
})
);
geolocation.on('change:position', function () {
const coordinates = geolocation.getPosition();
positionFeature.setGeometry(coordinates ? new Point(coordinates) : null);
});
new VectorLayer({
map: map,
source: new VectorSource({
features: [accuracyFeature, positionFeature],
}),
});
|
)
