diff --git a/LICENSE.txt b/LICENSE.txt
index 7c6df831..247d11af 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,5 +1,5 @@
 Copyright (C) 2009 CodePlex Foundation
-Copyright (C) 2010-2023 OpenSeadragon contributors
+Copyright (C) 2010-2024 OpenSeadragon contributors
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
diff --git a/src/button.js b/src/button.js
index e6c525d7..34d1f27a 100644
--- a/src/button.js
+++ b/src/button.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Button
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/buttongroup.js b/src/buttongroup.js
index 6cab6395..8a1b4c9e 100644
--- a/src/buttongroup.js
+++ b/src/buttongroup.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - ButtonGroup
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/canvasdrawer.js b/src/canvasdrawer.js
index 17c056ca..22d21c78 100644
--- a/src/canvasdrawer.js
+++ b/src/canvasdrawer.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - CanvasDrawer
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2022 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -347,7 +347,7 @@ class CanvasDrawer extends $.DrawerBase{
                         var point = tiledImage
                             .imageToViewportCoordinates(coord.x, coord.y, true)
                             .rotate(-tiledImage.getRotation(true), tiledImage._getRotationPoint(true));
-                        var clipPoint = self._viewportCoordToDrawerCoord(point);
+                        var clipPoint = self.viewportCoordToDrawerCoord(point);
                         if (sketchScale) {
                             clipPoint = clipPoint.times(sketchScale);
                         }
@@ -500,23 +500,6 @@ class CanvasDrawer extends $.DrawerBase{
         }
     }
 
-    /**
-         * This function converts the given point from to the drawer coordinate by
-         * multiplying it with the pixel density.
-         * This function does not take rotation into account, thus assuming provided
-         * point is at 0 degree.
-         * @private
-         * @param {OpenSeadragon.Point} point - the pixel point to convert
-         * @returns {OpenSeadragon.Point} Point in drawer coordinate system.
-         */
-    _viewportCoordToDrawerCoord(point) {
-        var vpPoint = this.viewport.pixelFromPointNoRotate(point, true);
-        return new $.Point(
-            vpPoint.x * $.pixelDensityRatio,
-            vpPoint.y * $.pixelDensityRatio
-        );
-    }
-
     /**
      * Draws special debug information for a TiledImage if in debug mode.
      * @private
diff --git a/src/control.js b/src/control.js
index 3cba9943..51fe020a 100644
--- a/src/control.js
+++ b/src/control.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Control
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/controldock.js b/src/controldock.js
index 0ab9e5cc..31f44b52 100644
--- a/src/controldock.js
+++ b/src/controldock.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - ControlDock
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/displayrectangle.js b/src/displayrectangle.js
index 58610058..3c3284d5 100644
--- a/src/displayrectangle.js
+++ b/src/displayrectangle.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - DisplayRect
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/drawerbase.js b/src/drawerbase.js
index 0b7c3b9f..e7574d25 100644
--- a/src/drawerbase.js
+++ b/src/drawerbase.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - DrawerBase
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -34,16 +34,6 @@
 
 (function( $ ){
 
-$.DrawerOptions = class DrawerOptions{
-    constructor(options){}
-};
-
-/**
- * @typedef {Object} Point
- * @property {number} x
- * @property {number} y
- */
-
 /**
  * @class DrawerBase
  * @memberof OpenSeadragon
@@ -90,16 +80,14 @@ $.DrawerBase = class DrawerBase{
          */
         this.container  = $.getElement( options.element );
 
-        // We force our container to ltr because our drawing math doesn't work in rtl.
-        // This issue only affects our canvas renderer, but we do it always for consistency.
-        // Note that this means overlays you want to be rtl need to be explicitly set to rtl.
-        this.container.dir = 'ltr';
+        this._renderingTarget = this._createDrawingElement();
+
 
-        // the first time this.canvas is accessed, implementations will create it
         this.canvas.style.width     = "100%";
         this.canvas.style.height    = "100%";
         this.canvas.style.position  = "absolute";
-        $.setElementOpacity( this.canvas, this.viewer.opacity, true ); // set
+        this.canvas.style.left = "0";
+        $.setElementOpacity( this.canvas, this.viewer.opacity, true );
 
         // Allow pointer events to pass through the canvas element so implicit
         //   pointer capture works on touch devices
@@ -113,10 +101,8 @@ $.DrawerBase = class DrawerBase{
         this._checkForAPIOverrides();
     }
 
+    // protect the canvas member with a getter
     get canvas(){
-        if(!this._renderingTarget){
-            this._renderingTarget = this._createDrawingElement();
-        }
         return this._renderingTarget;
     }
     get element(){
@@ -125,9 +111,10 @@ $.DrawerBase = class DrawerBase{
     }
 
     /**
-     * @property {String|undefined} type What type of drawer this is. Implementations should override this property.
+     * @returns {String|undefined} What type of drawer this is.
      */
     getType(){
+        $.console.error('Drawer.getType must be implemented by child class');
         return undefined;
     }
 
@@ -206,26 +193,25 @@ $.DrawerBase = class DrawerBase{
 
     /**
      * @private
-     * @inner
      * Ensures that child classes have provided implementations for public API methods
      * draw, canRotate, destroy, and setImageSmoothinEnabled. Throws an exception if the original
      * placeholder methods are still in place.
      */
     _checkForAPIOverrides(){
         if(this._createDrawingElement === $.DrawerBase.prototype._createDrawingElement){
-            throw("[drawer]._createDrawingElement must be implemented by child class");
+            throw(new Error("[drawer]._createDrawingElement must be implemented by child class"));
         }
         if(this.draw === $.DrawerBase.prototype.draw){
-            throw("[drawer].draw must be implemented by child class");
+            throw(new Error("[drawer].draw must be implemented by child class"));
         }
         if(this.canRotate === $.DrawerBase.prototype.canRotate){
-            throw("[drawer].canRotate must be implemented by child class");
+            throw(new Error("[drawer].canRotate must be implemented by child class"));
         }
         if(this.destroy === $.DrawerBase.prototype.destroy){
-            throw("[drawer].destroy must be implemented by child class");
+            throw(new Error("[drawer].destroy must be implemented by child class"));
         }
         if(this.setImageSmoothingEnabled === $.DrawerBase.prototype.setImageSmoothingEnabled){
-            throw("[drawer].setImageSmoothingEnabled must be implemented by child class");
+            throw(new Error("[drawer].setImageSmoothingEnabled must be implemented by child class"));
         }
     }
 
@@ -271,19 +257,14 @@ $.DrawerBase = class DrawerBase{
 
     /**
      * @private
-     * @inner
      * Calculate width and height of the canvas based on viewport dimensions
      * and pixelDensityRatio
-     * @returns {Point} {x, y} size of the canvas
+     * @returns {OpenSeadragon.Point} {x, y} size of the canvas
      */
     _calculateCanvasSize() {
         var pixelDensityRatio = $.pixelDensityRatio;
         var viewportSize = this.viewport.getContainerSize();
-        return {
-            // canvas width and height are integers
-            x: Math.round(viewportSize.x * pixelDensityRatio),
-            y: Math.round(viewportSize.y * pixelDensityRatio)
-        };
+        return new OpenSeadragon.Point( Math.round(viewportSize.x * pixelDensityRatio), Math.round(viewportSize.y * pixelDensityRatio));
     }
 
 };
diff --git a/src/dzitilesource.js b/src/dzitilesource.js
index 57b9f5a3..5ee28bfc 100644
--- a/src/dzitilesource.js
+++ b/src/dzitilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - DziTileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/eventsource.js b/src/eventsource.js
index 94949f0f..e696c0b2 100644
--- a/src/eventsource.js
+++ b/src/eventsource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - EventSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/fullscreen.js b/src/fullscreen.js
index 1b80464c..4af8630d 100644
--- a/src/fullscreen.js
+++ b/src/fullscreen.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - full-screen support functions
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/htmldrawer.js b/src/htmldrawer.js
index 6c2ec102..22423bce 100644
--- a/src/htmldrawer.js
+++ b/src/htmldrawer.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - HTMLDrawer
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -130,7 +130,6 @@ class HTMLDrawer extends $.DrawerBase{
 
     /**
      * @private
-     * @inner
      * Clears the Drawer so it's ready to draw another frame.
      *
      */
@@ -140,7 +139,6 @@ class HTMLDrawer extends $.DrawerBase{
 
     /**
      * @private
-     * @inner
      * Draws a TiledImage.
      *
      */
@@ -179,7 +177,6 @@ class HTMLDrawer extends $.DrawerBase{
 
     /**
      * @private
-     * @inner
      * Draws the given tile.
      * @param {OpenSeadragon.Tile} tile - The tile to draw.
      * @param {Function} drawingHandler - Method for firing the drawing event if using canvas.
diff --git a/src/iiiftilesource.js b/src/iiiftilesource.js
index 54ec073f..1433a968 100644
--- a/src/iiiftilesource.js
+++ b/src/iiiftilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - IIIFTileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/imageloader.js b/src/imageloader.js
index e66bd820..50ccac65 100644
--- a/src/imageloader.js
+++ b/src/imageloader.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - ImageLoader
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/imagetilesource.js b/src/imagetilesource.js
index b039cc2b..4ebc7591 100644
--- a/src/imagetilesource.js
+++ b/src/imagetilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - ImageTileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/legacytilesource.js b/src/legacytilesource.js
index e80b931f..f500d728 100644
--- a/src/legacytilesource.js
+++ b/src/legacytilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - LegacyTileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/matrix.js b/src/matrix.js
index 1f580658..59d57ab5 100644
--- a/src/matrix.js
+++ b/src/matrix.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Mat3
  *
  * Modified from https://webglfundamentals.org/webgl/lessons/webgl-2d-matrices.html
- * Copyright (C) 2010-2023 webglfundamentals.org and OpenSeadragon contributors
+ * Copyright (C) 2010-2024 webglfundamentals.org and OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/mousetracker.js b/src/mousetracker.js
index 57d89d5b..7a381b7e 100644
--- a/src/mousetracker.js
+++ b/src/mousetracker.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - MouseTracker
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/navigator.js b/src/navigator.js
index 21544b9a..6a213624 100644
--- a/src/navigator.js
+++ b/src/navigator.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Navigator
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/openseadragon.js b/src/openseadragon.js
index 3c05509e..bcff91d0 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -2,7 +2,7 @@
  * OpenSeadragon
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/osmtilesource.js b/src/osmtilesource.js
index 43e525ab..4f9d1f35 100644
--- a/src/osmtilesource.js
+++ b/src/osmtilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - OsmTileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/overlay.js b/src/overlay.js
index bc25a051..7dec6a6b 100644
--- a/src/overlay.js
+++ b/src/overlay.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Overlay
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/placement.js b/src/placement.js
index 561d5daf..2db3e2b1 100644
--- a/src/placement.js
+++ b/src/placement.js
@@ -1,7 +1,7 @@
 /*
  * OpenSeadragon - Placement
  *
- * Copyright (C) 2010-2016 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/point.js b/src/point.js
index 8df11d63..cc831b26 100644
--- a/src/point.js
+++ b/src/point.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Point
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/profiler.js b/src/profiler.js
index d0ffc2b2..01566bc0 100644
--- a/src/profiler.js
+++ b/src/profiler.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Profiler
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/rectangle.js b/src/rectangle.js
index fdeab18f..d154691d 100644
--- a/src/rectangle.js
+++ b/src/rectangle.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Rect
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/referencestrip.js b/src/referencestrip.js
index ee516c6f..9e15852d 100644
--- a/src/referencestrip.js
+++ b/src/referencestrip.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - ReferenceStrip
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/spring.js b/src/spring.js
index a431d56f..f65f076e 100644
--- a/src/spring.js
+++ b/src/spring.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Spring
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/strings.js b/src/strings.js
index e423bef9..9d2b30d7 100644
--- a/src/strings.js
+++ b/src/strings.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - getString/setString
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/tile.js b/src/tile.js
index 8edcc605..0b6d5fb2 100644
--- a/src/tile.js
+++ b/src/tile.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Tile
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/tilecache.js b/src/tilecache.js
index c776a077..f85cb643 100644
--- a/src/tilecache.js
+++ b/src/tilecache.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - TileCache
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/tiledimage.js b/src/tiledimage.js
index 98a92e24..16f04f76 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - TiledImage
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/tilesource.js b/src/tilesource.js
index 4961a47f..73e3536d 100644
--- a/src/tilesource.js
+++ b/src/tilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - TileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/tilesourcecollection.js b/src/tilesourcecollection.js
index e1483184..29d7ec94 100644
--- a/src/tilesourcecollection.js
+++ b/src/tilesourcecollection.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - TileSourceCollection
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/tmstilesource.js b/src/tmstilesource.js
index b6deeb03..5f8c999f 100644
--- a/src/tmstilesource.js
+++ b/src/tmstilesource.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - TmsTileSource
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/viewer.js b/src/viewer.js
index 45da8ec7..f60fcffa 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Viewer
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/viewport.js b/src/viewport.js
index 02e173f0..3bd51ac8 100644
--- a/src/viewport.js
+++ b/src/viewport.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - Viewport
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/webgldrawer.js b/src/webgldrawer.js
index e0ca0314..fc24e4ef 100644
--- a/src/webgldrawer.js
+++ b/src/webgldrawer.js
@@ -3,7 +3,7 @@
  * OpenSeadragon - WebGLDrawer
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -875,7 +875,6 @@
             this._clippingContext.clip();
         }
         _renderToClippingCanvas(item){
-            let _this = this;
 
             this._clippingContext.clearRect(0, 0, this._clippingCanvas.width, this._clippingCanvas.height);
             this._clippingContext.save();
@@ -886,18 +885,18 @@
                 this._setClip(rect);
             }
             if(item._croppingPolygons){
-                let polygons = item._croppingPolygons.map(function (polygon) {
-                    return polygon.map(function (coord) {
+                let polygons = item._croppingPolygons.map(polygon => {
+                    return polygon.map(coord => {
                         let point = item.imageToViewportCoordinates(coord.x, coord.y, true)
-                            .rotate(_this.viewer.viewport.getRotation(true), _this.viewer.viewport.getCenter(true));
-                        let clipPoint = _this._viewportCoordToDrawerCoord(point);
+                            .rotate(this.viewer.viewport.getRotation(true), this.viewer.viewport.getCenter(true));
+                        let clipPoint = this.viewportCoordToDrawerCoord(point);
                         return clipPoint;
                     });
                 });
                 this._clippingContext.beginPath();
-                polygons.forEach(function (polygon) {
-                    polygon.forEach(function (coord, i) {
-                        _this._clippingContext[i === 0 ? 'moveTo' : 'lineTo'](coord.x, coord.y);
+                polygons.forEach(polygon => {
+                    polygon.forEach( (coord, i) => {
+                        this._clippingContext[i === 0 ? 'moveTo' : 'lineTo'](coord.x, coord.y);
                     });
                 });
                 this._clippingContext.clip();
@@ -927,25 +926,6 @@
             context.translate(-point.x, -point.y);
         }
 
-
-        /**
-            * @private
-            * @inner
-            * This function converts the given point from to the drawer coordinate by
-            * multiplying it with the pixel density.
-            * This function does not take rotation into account, thus assuming provided
-            * point is at 0 degree.
-            * @param {OpenSeadragon.Point} point - the pixel point to convert
-            * @returns {OpenSeadragon.Point} Point in drawer coordinate system.
-            */
-        _viewportCoordToDrawerCoord(point) {
-            var vpPoint = this.viewport.pixelFromPointNoRotate(point, true);
-            return new $.Point(
-                vpPoint.x * $.pixelDensityRatio,
-                vpPoint.y * $.pixelDensityRatio
-            );
-        }
-
         // private
         _drawDebugInfo( tilesToDraw, tiledImage, stroke, fill ) {
 
diff --git a/src/world.js b/src/world.js
index ef24d399..5539d2bc 100644
--- a/src/world.js
+++ b/src/world.js
@@ -2,7 +2,7 @@
  * OpenSeadragon - World
  *
  * Copyright (C) 2009 CodePlex Foundation
- * Copyright (C) 2010-2023 OpenSeadragon contributors
+ * Copyright (C) 2010-2024 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are