fix map Cannot scroll when update seamlessZoom (#2323)

maptalks · May 10, 2024 · 8b10f8d · 8b10f8d
1 parent 2a4ab20
commit 8b10f8d
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/map/handler/Map.ScrollWheelZoom.ts b/src/map/handler/Map.ScrollWheelZoom.ts
@@ -95,6 +95,10 @@ class MapScrollWheelZoomHandler extends Handler {
         if (evt.shiftKey && value) value = value / 4;
 
         this._lastWheelEvent = evt;
+        //is undefined ,the _interval will delete it
+        if (isNil(this._delta)) {
+            this._delta = 0;
+        }
         this._delta -= value;
         if (!this._zooming && this._delta) {
             const map = this.target;