添加项目文件。

RevitKits/MetroTunnel/MetroTunnelViewModel.cs

@@ -0,0 +1,53 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+
+namespace ShrlAlgoToolkit.RevitAddins.RvIndependent.MetroTunnel
+{
+    public partial class MetroTunnelViewModel : ObservableObject
+    {
+        [ObservableProperty]
+        public partial int AssembleSelectedIndex { get; set; }
+
+        /// <summary>
+        ///     后环邻接块
+        /// </summary>
+        [ObservableProperty]
+        public partial double BackTubeAngle { get; set; } = 50.0;
+
+        /// <summary>
+        ///     前环邻接块跨度
+        /// </summary>
+        [ObservableProperty]
+        public partial double FrontTubeAngle { get; set; } = 60;
+
+        [ObservableProperty]
+        public partial double StaggerAngle { get; set; } = 10;
+
+        /// <summary>
+        ///     标准块
+        /// </summary>
+        [ObservableProperty]
+        public partial double StandardTubeAngle { get; set; } = 67.5;
+
+        [ObservableProperty]
+        public partial double StartAngle { get; set; } = 10.0;
+
+        [ObservableProperty]
+        public partial double TubeOuterDiameter { get; set; } = 6000;
+
+        [ObservableProperty]
+        public partial double TubeThickness { get; set; } = 300.0;
+
+        [ObservableProperty]
+        public partial double TubeWidth { get; set; } = 2000.0;
+
+        [RelayCommand]
+        private static void Confirm(object obj)
+        {
+            if (obj is System.Windows.Window window)
+            {
+                window.DialogResult = true;
+            }
+        }
+    }
+}