Point is defined as Point structure

frontend-js/src/main/js/gui/OverviewDialog.js

@@ -147,10 +147,7 @@ OverviewDialog.prototype.showOverview = function (overviewImageId) {
 
     var xNormal = position.x / currentRatio;
     var yNormal = position.y / currentRatio;
-    var point = {
-      x: xNormal,
-      y: yNormal
-    };
+    var point = new Point(xNormal, yNormal);
 
     if (self.overviewImage.mousePos.x !== position.x || self.overviewImage.mousePos.y !== position.y) {
       self.overviewImage.mousePos = position;