// Cylinder類別呼叫用
		public override void VisitCylinder(Cylinder theCylinder)
		{
			theCylinder.Draw();
		}
		// Cylinder類別呼叫用
		public override void VisitCylinder(Cylinder theCylinder)
		{
			Count += theCylinder.GetVectorCount();
		}
		// Cylinder類別呼叫用
		public virtual void VisitCylinder(Cylinder theCylinder)
		{}