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+<!--
+@license
+Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+
+<link rel="import" href="../../polymer/polymer.html">
+<link rel="import" href="../neon-animation-behavior.html">
+<link rel="import" href="../web-animations.html">
+
+<!--
+`<scale-up-animation>` animates the scale transform of an element from 0 to 1. By default it
+scales in both the x and y axes.
+
+Configuration:
+```
+{
+  name: 'scale-up-animation',
+  node: <node>,
+  axis: 'x' | 'y' | '',
+  transformOrigin: <transform-origin>,
+  timing: <animation-timing>
+}
+```
+-->
+
+<script>
+
+  Polymer({
+
+    is: 'scale-up-animation',
+
+    behaviors: [
+      Polymer.NeonAnimationBehavior
+    ],
+
+    configure: function(config) {
+      var node = config.node;
+
+      var scaleProperty = 'scale(0)';
+      if (config.axis === 'x') {
+        scaleProperty = 'scale(0, 1)';
+      } else if (config.axis === 'y') {
+        scaleProperty = 'scale(1, 0)';
+      }
+
+      this._effect = new KeyframeEffect(node, [
+        {'transform': scaleProperty},
+        {'transform': 'scale(1, 1)'}
+      ], this.timingFromConfig(config));
+
+      if (config.transformOrigin) {
+        this.setPrefixedProperty(node, 'transformOrigin', config.transformOrigin);
+      }
+
+      return this._effect;
+    }
+
+  });
+
+</script>