typed more utils

src/utils/simplify.ts

@@ -0,0 +1,23 @@
+import { Map, LineUtil } from 'leaflet';
+import { ILatLng } from "$modules/Stickers";
+
+export const simplify = ({ map, latlngs }: { map: Map, latlngs: ILatLng[] }): ILatLng[] => {
+  const points = [];
+  const target = [];
+  const zoom = 12;
+  const mul = 0.7; // 0 - not simplifying, 1 - very rude.
+  // its better to estimate mul value by route length
+
+  for (let i = 0; i < latlngs.length; i += 1) {
+    points.push(map.project({ lat: latlngs[i].lat, lng: latlngs[i].lng }, zoom));
+  }
+
+  const simplified = LineUtil.simplify(points, mul);
+
+  // for (let i = 0; i < simplified.length; i += 1) {
+  //   target.push(map.unproject(simplified[i], zoom));
+  // }
+  //
+  // return target;
+  return simplified.map(item => map.unproject(item, zoom));
+};