添加项目文件。

Sai.RvKits/RvIndependent/MetroTunnel/MetroTunnelViewModel.cs

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+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+
+using System.Windows;
+
+namespace Sai.RvKits.RvIndependent
+{
+	public partial class MetroTunnelViewModel : ObservableObject
+	{
+		[ObservableProperty]
+		private int assembleSelectedIndex;
+
+		/// <summary>
+		///     后环邻接块
+		/// </summary>
+		[ObservableProperty]
+		private double backTubeAngle = 50.0;
+
+		/// <summary>
+		///     前环邻接块跨度
+		/// </summary>
+		[ObservableProperty]
+		private double frontTubeAngle = 60;
+
+		[ObservableProperty]
+		private double staggerAngle = 10;
+
+		/// <summary>
+		///     标准块
+		/// </summary>
+		[ObservableProperty]
+		private double standardTubeAngle = 67.5;
+
+		[ObservableProperty]
+		private double startAngle = 10.0;
+
+		[ObservableProperty]
+		private double tubeOuterDiameter = 6000;
+
+		[ObservableProperty]
+		private double tubeThickness = 300.0;
+
+		[ObservableProperty]
+		private double tubeWidth = 2000.0;
+
+		[RelayCommand]
+		private static void Confirm(object obj)
+		{
+			if (obj is System.Windows.Window window)
+			{
+				window.DialogResult = true;
+			}
+		}
+	}
+}