From 4627d5960915897b72243e794b3b5b68c0f51626 Mon Sep 17 00:00:00 2001
From: YSH <devtlin34@gmail.com>
Date: Thu, 13 Feb 2020 14:49:14 -0800
Subject: [PATCH] Update tiledimage.js

---
 src/tiledimage.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tiledimage.js b/src/tiledimage.js
index bece9b66..9c2fc4ed 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -705,7 +705,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
         };
 
         try {
-            if ($.isArray(polygons)) {
+            if (!$.isArray(polygons)) {
                 throw new Error('Provided cropping polygon is not an array');
             }
             this._croppingPolygons = polygons.map(function(polygon){