add nullpointer check

CesiumGS · Apr 17, 2020 · 7424499 · 7424499
1 parent 99b7c25
commit 7424499
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Source/Scene/BillboardCollection.js b/Source/Scene/BillboardCollection.js
@@ -322,7 +322,9 @@ function BillboardCollection(options) {
         var billboards = this._billboards;
         var length = billboards.length;
         for (var i = 0; i < length; ++i) {
-          billboards[i]._updateClamping();
+          if (billboards[i]) {
+            billboards[i]._updateClamping();
+          }
         }
       },
       this