AnimatedContainer: generalized Container widget that handles animating values

sky/sdk/lib/widgets/animated_component.dart

Index: sky/sdk/lib/widgets/animated_component.dart
diff --git a/sky/sdk/lib/widgets/animated_component.dart b/sky/sdk/lib/widgets/animated_component.dart
index af088f846434d415523be11d13d2aaef0ef8bb14..cfd79f4054e9307d0f667555fc035c87b914fb4b 100644
--- a/sky/sdk/lib/widgets/animated_component.dart
+++ b/sky/sdk/lib/widgets/animated_component.dart
@@ -4,11 +4,7 @@
 
 import 'dart:async';
 
-import 'package:vector_math/vector_math.dart';
-
 import '../animation/animated_value.dart';
-import '../animation/animation_performance.dart';
-import '../animation/curves.dart';
 import 'basic.dart';
 
 class _AnimationEntry {
@@ -54,22 +50,3 @@ abstract class AnimatedComponent extends StatefulComponent {
   }
 
 }
-
-// Types of things that can be animated in a component. Use build() to
-// construct the final Widget based on the animation state.
-// TODO(mpcomplete): the idea here is to eventually have an AnimatedCollection
-// which assembles a container based on a list of animated things. e.g. if you
-// want to animate position, opacity, and shadow, you add those animators to an
-// AnimatedCollection and just call collection.build() to construct your
-// widget.
-
-class AnimatedPosition extends AnimatedType<Point> {
-  AnimatedPosition(Point begin, Point end, {Curve curve: linear})
-      : super(begin, end, curve: curve);
-
-  Widget build(Widget child) {
-    Matrix4 transform = new Matrix4.identity();
-    transform.translate(value.x, value.y);
-    return new Transform(transform: transform, child: child);
-  }
-}