WPF實作地震波警示效果

實作效果如圖：

主要參考博文https://www.cnblogs.com/lonelyxmas/p/10799166.html

1、動态環形控件RingControl的封裝

public partial class RingControl : UserControl
    {
        /// <summary>
        /// 圓的顔色
        /// </summary>
        public Brush EllipseStroke { get; set; }
        /// <summary>
        /// 圓環的寬度
        /// </summary>
        public double EllipseStrokeThickness { get; set; }
        /// <summary>
        /// 圓的最小尺寸
        /// </summary>
        public double MinSize { get; set; }
        /// <summary>
        /// 圓的最大尺寸
        /// </summary>
        public double MaxSize { get; set; }
        /// <su