Deprecate the imageSmoothing option for sources

src/ol/source/ImageMapGuide.js

@@ -32,7 +32,9 @@ import {
  * @property {Array<number>} [resolutions] Resolutions.
  * If specified, requests will be made for these resolutions only.
  * @property {import("../Image.js").LoadFunction} [imageLoadFunction] Optional function to load an image given a URL.
- * @property {boolean} [imageSmoothing=true] Enable image smoothing.
+ * @property {boolean} [imageSmoothing=true] Deprecated.  Use the `interpolate` option instead.
+ * @property {boolean} [interpolate=true] Use interpolated values when resampling.  By default,
+ * linear interpolation is used when resampling.  Set to false to use the nearest neighbor instead.
  * @property {Object} [params] Additional parameters.
  */
 
@@ -48,8 +50,14 @@ class ImageMapGuide extends ImageSource {
    * @param {Options} options ImageMapGuide options.
    */
   constructor(options) {
+    let interpolate =
+      options.imageSmoothing !== undefined ? options.imageSmoothing : true;
+    if (options.interpolate !== undefined) {
+      interpolate = options.interpolate;
+    }
+
     super({
-      imageSmoothing: options.imageSmoothing,
+      interpolate: interpolate,
       projection: options.projection,
       resolutions: options.resolutions,
     });