1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
import { useEffect } from 'react';
import { useSelector } from 'react-redux';
import circle from '@turf/circle';
import { map } from '../core/Map';
const MapAccuracy = () => {
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,
type: 'fill',
filter: [
'all',
['==', '$type', 'Polygon'],
],
paint: {
'fill-color': '#3bb2d0',
'fill-outline-color': '#3bb2d0',
'fill-opacity': 0.25,
},
});
return () => {
if (map.getLayer(id)) {
map.removeLayer(id);
}
if (map.getSource(id)) {
map.removeSource(id);
}
};
}, []);
useEffect(() => {
map.getSource(id).setData(positions);
}, [positions]);
return null;
};
export default MapAccuracy;
|
