maps.chandlerswift.com/layers/chandler/layer.js

45 lines
1.4 KiB
JavaScript

import VectorLayer from 'ol/layer/Vector';
import {Vector as VectorSource} from 'ol/source.js';
import {Style} from 'ol/style.js';
import Icon from 'ol/style/Icon.js';
import pinURL from '/layers/chandler/pin.svg?url'; // TODO: remove `?url`?
import { Collection, Feature } from 'ol';
import { Point } from 'ol/geom';
import { fromLonLat } from 'ol/proj';
let features = new Collection();
const vectorLayer = new VectorLayer({
source: new VectorSource({
features,
}),
style: new Style({
image: new Icon({
anchor: [0.5, 1],
src: pinURL,
}),
}),
});
async function refresh(){
const res = await fetch("https://whereis.chandlerswift.com/api/0/last");
const locs = await res.json();
const loc = locs[0];
// TODO: I could probably just `features[0] = …` but I'm not sure if that causes problems with re-rendering features
if (features.getLength() == 0) {
features.push(new Feature({
geometry: new Point(fromLonLat([loc.lon, loc.lat])),
...loc
}));
} else {
features.item(0).setProperties(loc); // TODO: this won't remove a property if it was in a previous response but not this one
features.item(0).getGeometry().setCoordinates(fromLonLat([loc.lon, loc.lat]));
}
}
refresh();
setInterval(refresh, 10 * 1000);
export default vectorLayer;