From f64388b0387e2b9d18786c7f7297e6d905b7704f Mon Sep 17 00:00:00 2001
From: Peter <jetic@gmx.net>
Date: Wed, 4 Oct 2017 16:11:08 -0400
Subject: [PATCH] Solves issue #1318 : transparent tiledImages get _needsDraw =
 false in the draw function.

---
 src/tiledimage.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/tiledimage.js b/src/tiledimage.js
index a289026a..44ddba33 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -311,6 +311,10 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
             this._updateViewport();
             this._midDraw = false;
         }
+        // Images with opacity 0 should not need to be drawn in future. this._needsDraw = false is set in this._updateViewport() for other images.
+        if (this.opacity === 0) {
+            this._needsDraw = false;
+        }
     },
 
     /**