Merge pull request #127 from elemoine/tile-fade-in

CSS-based tile animation

notes/2.12.md

@@ -1,3 +1,25 @@
+# Major enhancements
+
+## Tile animation
+
+The displaying of tiles can now be animated, using CSS3 transitions. Transitions operate on the `opacity` property. Here's the CSS rule defined in OpenLayers' default theme:
+
+    .olTileImage {
+        -webkit-transition: opacity 0.2s linear;
+        -moz-transition: opacity 0.2s linear;
+        -o-transition: opacity 0.2s linear;
+        transition: opacity 0.2s linear;
+    }
+
+People can override this rule to use other transition settings. To remove tile animation entirely use:
+
+    .olTileImage {
+        -webkit-transition: none;
+        -moz-transition: none;
+        -o-transition: all 0 none;
+        transition: none;
+    }
+
 # Behavior Changes from Past Releases
 
 ## Function return values