From c16d1e3dff7bf6c299eb67b2a758903ae1926f1b Mon Sep 17 00:00:00 2001
From: jonasengelmann <40031476+jonasengelmann@users.noreply.github.com>
Date: Fri, 1 Apr 2022 10:06:18 +0200
Subject: [PATCH] ensure backward compatibility

---
 src/viewer.js   |  2 +-
 src/viewport.js | 18 +++++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/viewer.js b/src/viewer.js
index 2b6a6b4a..0778e1e0 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -378,7 +378,7 @@ $.Viewer = function( options ) {
         minZoomLevel:               this.minZoomLevel,
         maxZoomLevel:               this.maxZoomLevel,
         viewer:                     this,
-        degrees:                    this.degrees,
+        initialDegrees:             this.degrees,
         flipped:                    this.flipped,
         navigatorRotate:            this.navigatorRotate,
         homeFillsViewer:            this.homeFillsViewer,
diff --git a/src/viewport.js b/src/viewport.js
index 122708b1..dffad0f1 100644
--- a/src/viewport.js
+++ b/src/viewport.js
@@ -107,7 +107,7 @@ $.Viewport = function( options ) {
         defaultZoomLevel:           $.DEFAULT_SETTINGS.defaultZoomLevel,
         minZoomLevel:               $.DEFAULT_SETTINGS.minZoomLevel,
         maxZoomLevel:               $.DEFAULT_SETTINGS.maxZoomLevel,
-        degrees:                    $.DEFAULT_SETTINGS.degrees,
+        initialDegrees:             $.DEFAULT_SETTINGS.degrees,
         flipped:                    $.DEFAULT_SETTINGS.flipped,
         homeFillsViewer:            $.DEFAULT_SETTINGS.homeFillsViewer,
         silenceMultiImageWarnings:  $.DEFAULT_SETTINGS.silenceMultiImageWarnings
@@ -134,11 +134,10 @@ $.Viewport = function( options ) {
     });
 
     this.degreesSpring = new $.Spring({
-        initial: options.degrees,
+        initial: options.initialDegrees,
         springStiffness: this.springStiffness,
         animationTime: this.animationTime
     });
-    delete options.degrees;
 
     this._oldCenterX = this.centerSpringX.current.value;
     this._oldCenterY = this.centerSpringY.current.value;
@@ -153,6 +152,19 @@ $.Viewport = function( options ) {
 
 /** @lends OpenSeadragon.Viewport.prototype */
 $.Viewport.prototype = {
+
+    // deprecated
+    get degrees () {
+        $.console.warn('Accessing [Viewport.degrees] is deprecated. Use viewport.getRotation instead.');
+        return this.getRotation();
+    },
+
+    // deprecated
+    set degrees (degrees) {
+        $.console.warn('Setting [Viewport.degrees] is deprecated. Use viewport.setRotation instead.');
+        this.setRotation(degrees);
+    },
+
     /**
      * Updates the viewport's home bounds and constraints for the given content size.
      * @function