Resize transitions by default

lib/OpenLayers/Layer/Grid.js

@@ -96,16 +96,16 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
      * {String} The transition effect to use when the map is zoomed.
      * Two posible values:
      *
-     * null - No transition effect (the default).
      * "resize" - Existing tiles are resized on zoom to provide a visual
      * effect of the zoom having taken place immediately.  As the
      * new tiles become available, they are drawn over top of the
-     * resized tiles.
+     * resized tiles (this is the default setting).
+     * null - No transition effect.
      *
      * Using "resize" on non-opaque layers can cause undesired visual
-     * effects. This is therefore discouraged.
+     * effects.  Set transitionEffect to null in this case.
      */
-    transitionEffect: null,
+    transitionEffect: "resize",
 
     /**
      * APIProperty: numLoadingTiles

notes/2.13.md

@@ -51,6 +51,10 @@ The `moveDelay` is the replacement for the `tileLoadingDelay` layer config optio
 
 In general, when targeting mobile devices or when using slow servers or connections for tiled layers, it is recommended to configure the map with a TileManager.
 
+## Layer.Grid: Resize transitions by default
+
+The `transitionEffect` property for grid layers has been changed to "resize" by default.  This allows smooth transitions with animated zooming (also enabled by default).  If resize transitions are not wanted for individual layers, set `transitionEffect` to `null`.
+
 ## Control.DragPan: Kinetic by default
 
 The `enableKinetic` property for the DragPan control has been changed to true by default.  This will enable kinetic panning only if the `OpenLayers/Kinetic.js` file is included in your build.