From 2915ee09c5d953942afbf6f8a9bc5c8e8d33bf09 Mon Sep 17 00:00:00 2001
From: thejohnhoffer <hoffexi@gmail.com>
Date: Fri, 4 Nov 2016 09:26:34 -0400
Subject: [PATCH] correct logic for call to _updateViewport

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

diff --git a/src/tiledimage.js b/src/tiledimage.js
index 18ca5917..d9067229 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -292,7 +292,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
      * Draws the TiledImage to its Drawer.
      */
     draw: function() {
-        if (this.opacity !== 0 && !this._preload) {
+        if (!(this.opacity === 0 && !this._preload)) {
             this._midDraw = true;
             this._updateViewport();
             this._midDraw = false;