30 lines
987 B
TypeScript
30 lines
987 B
TypeScript
import { point, booleanPointInPolygon, polygon } from "@turf/turf";
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import leitstellenGeoJSON from "../_components/map/_geojson/Leitstellen.json"; // Pfad anpassen
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export function findLeitstelleForPosition(lat: number, lng: number) {
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const heliPoint = point([lat, lng]);
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for (const feature of (leitstellenGeoJSON as GeoJSON.FeatureCollection).features) {
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const geom = feature.geometry;
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if (geom.type === "Polygon") {
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const turfPolygon = polygon(geom.coordinates);
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if (booleanPointInPolygon(heliPoint, turfPolygon)) {
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return feature.properties?.name ?? "Unbenannte Leitstelle";
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}
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} else if (geom.type === "MultiPolygon") {
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// MultiPolygon: check each polygon
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for (const coords of geom.coordinates) {
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const turfPolygon = polygon(coords);
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if (booleanPointInPolygon(heliPoint, turfPolygon)) {
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return feature.properties?.name ?? "Unbenannte Leitstelle";
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}
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}
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} else {
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continue; // Andere Geometrietypen ignorieren
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}
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}
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return null;
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}
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