20 lines
393 B
JavaScript
20 lines
393 B
JavaScript
|
import area from '@turf/area';
|
||
|
|
|
||
|
|
export default function polygonArea(latLngs) {
|
||
|
|
return area({
|
||
|
|
type: 'FeatureCollection',
|
||
|
|
features: latLngs.map(featurePolygonLatLngs)
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function featurePolygonLatLngs(latLngs) {
|
||
|
|
return {
|
||
|
|
type: 'Feature',
|
||
|
|
properties: {},
|
||
|
|
geometry: {
|
||
|
|
type: 'Polygon',
|
||
|
|
coordinates: [latLngs.map(({ lng, lat }) => [lng, lat])]
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|