/// <summary>コピーコンストラクタ。</summary>
 /// <param name="previous"></param>
 public VirtualPie(VirtualPie previous)
     : base(previous)
 {
     StartAngle = previous.StartAngle;
     SweepAngle = previous.SweepAngle;
     Radius     = previous.Radius;
     Center     = previous.Center;
 }
		/// <summary>コピーコンストラクタ。</summary>
		/// <param name="previous"></param>
		public VirtualPie(VirtualPie previous)
			: base( previous )
			{
			StartAngle = previous.StartAngle;
			SweepAngle = previous.SweepAngle;
			Radius = previous.Radius;
			Center = previous.Center;
			}