准备区分节点、参数、返回值的连接，做个备份

Workbench/Node/Junction/View/ResultJunctionControl.cs

@@ -0,0 +1,39 @@
+using System.Windows.Media;
+using System.Windows.Shapes;
+using Serein.Library;
+
+namespace Serein.Workbench.Node.View
+{
+
+    public class ResultJunctionControl : JunctionControlBase
+    {
+        //public override JunctionType JunctionType { get; } = JunctionType.ReturnData;
+
+        public ResultJunctionControl()
+        {
+            base.JunctionType = JunctionType.ReturnData;
+            Render();
+        }
+
+        public override void Render()
+        {
+            if (double.IsNaN(base.Width))
+            {
+                base.Width = base._MyWidth;
+            }
+            if (double.IsNaN(base.Height))
+            {
+                base.Height = base._MyHeight;
+            }
+
+            var rect = new Rectangle
+            {
+                Width = base.Width,
+                Height = base.Height,
+                Fill = Brushes.Red,
+                ToolTip = "返回值"
+            };
+            Content = rect;
+        }
+    }
+}