packages/SystemUI/res/anim/wireless_charging_ellipse_path_1_animation.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
** Copyright 2018, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<set
    xmlns:android="http://schemas.android.com/apk/res/android" >
    <objectAnimator
        android:duration="150"
        android:propertyName="pathData"
        android:valueFrom="M 0.0,0.0 c 0.0,0.0 0.0,0.0 0.0,0.0 c 0.0,0.0 0.0,0.0 0.0,0.0 c 0.0,0.0 0.0,0.0 0.0,0.0 c 0.0,0.0 0.0,0.0 0.0,0.0 Z"
        android:valueTo="M 0.0,-3.5 c 1.9329966243,0.0 3.5,1.5670033757 3.5,3.5 c 0.0,1.9329966243 -1.5670033757,3.5 -3.5,3.5 c -1.9329966243,0.0 -3.5,-1.5670033757 -3.5,-3.5 c 0.0,-1.9329966243 1.5670033757,-3.5 3.5,-3.5 Z"
        android:valueType="pathType"
        android:interpolator="@interpolator/wireless_charging_animation_interpolator_0" />
</set>