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-rw-r--r--modern/src/map/AccuracyMap.js53
1 files changed, 53 insertions, 0 deletions
diff --git a/modern/src/map/AccuracyMap.js b/modern/src/map/AccuracyMap.js
new file mode 100644
index 0000000..e81fc8f
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+++ b/modern/src/map/AccuracyMap.js
@@ -0,0 +1,53 @@
+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;