#简介： 仅仅是一个简单的拟声音圆形效果，可以根据传入的具体数值，做半径大小的线性变化，可以用作一些设计的启发和灵感吧

#License Copyright (C) 2016 ccx

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.