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import { useEffect } from 'react';
import { useSelector } from 'react-redux';
import circle from '@turf/circle';
import { map } from './Map';
const AccuracyMap = () => {
const id = 'accuracy';
const positions = useSelector(state => ({
type: 'FeatureCollection',
features: Object.values(state.positions.items).filter(position => position.accuracy > 0).map(position =>
circle([position.longitude, position.latitude], position.accuracy * 0.001)
),
}));
useEffect(() => {
map.addSource(id, {
'type': 'geojson',
'data': {
type: 'FeatureCollection',
features: []
}
});
map.addLayer({
'source': id,
'id': id,
'type': 'fill',
'filter': [
'all',
['==', '$type', 'Polygon'],
],
'paint': {
'fill-color':'#3bb2d0',
'fill-outline-color':'#3bb2d0',
'fill-opacity':0.25,
},
});
return () => {
map.removeLayer(id);
map.removeSource(id);
};
}, []);
useEffect(() => {
map.getSource(id).setData(positions);
}, [positions]);
return null;
}
export default AccuracyMap;
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