From 921171ed2bb1afe3529426a7cdc8b7a73e62636b Mon Sep 17 00:00:00 2001
From: Tom <tmpearce@gmail.com>
Date: Thu, 1 Feb 2024 08:47:03 -0500
Subject: [PATCH] move logic about zero opacity case into getDrawArea

---
 src/tiledimage.js             | 7 ++++++-
 test/demo/drawercomparison.js | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/tiledimage.js b/src/tiledimage.js
index 9b202819..a1c3054b 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -1020,9 +1020,14 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
     /**
      * Get the region of this tiled image that falls within the viewport.
      * @returns {OpenSeadragon.Rect} the region of this tiled image that falls within the viewport.
+     * Returns false for images with opacity==0 unless preload==true
      */
     getDrawArea: function(){
 
+        if( this._opacity === 0 && !this._preload){
+            return false;
+        }
+
         var drawArea = this._viewportToTiledImageRectangle(
             this.viewport.getBoundsWithMargins(true));
 
@@ -1434,7 +1439,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
         let lowestLevel = tiles.length ? tiles[0].level : 0;
 
         let drawArea = this.getDrawArea();
-        if(!drawArea || (this._opacity === 0 && !this._preload)){
+        if(!drawArea){
             return;
         }
 
diff --git a/test/demo/drawercomparison.js b/test/demo/drawercomparison.js
index 96793915..bd95deaa 100644
--- a/test/demo/drawercomparison.js
+++ b/test/demo/drawercomparison.js
@@ -1,5 +1,5 @@
 const sources = {
-    "rainbow":"../data/testpattern.dzi",
+    "rainbow": "../data/testpattern.dzi",
     "leaves":"../data/iiif_2_0_sizes/info.json",
     "bblue":{
         type:'image',