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public/scripts/overlays/overlaysCoord.js

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+import * as math from "../modules/math.js";
+
+var coordOverlay = L.control({ position: "bottomleft" });
+
+coordOverlay.onAdd = function (map) {
+  this._div = L.DomUtil.create("div", "coordinates-overlay");
+  this._div.innerHTML = "Cliquez sur la carte pour voir les coordonnées";
+  return this._div;
+};
+
+coordOverlay.update = function (coord, cardinal) {
+  this._div.innerHTML = "LandBlockId:" + "<br>" + 
+  "0x" + coord.x.toString(16).toUpperCase().padStart(2, '0') 
+  + "" + coord.y.toString(16).toUpperCase().padStart(2, '0') 
+  + "FFFF"
+  + "<br>"
+  + cardinal;
+};
+
+export function UpdateCoord(ev, map) {
+    coordOverlay.update(math.GetLandBlockId(ev, map), math.coordToCardinal(ev.latlng.lat, ev.latlng.lng));
+}
+
+export default function InitialisationOverlayCoord(map) {
+    coordOverlay.addTo(map);
+}