Fixed VecD property view not working

src/PixiEditor.AvaloniaUI/ViewModels/Nodes/Properties/VecDPropertyViewModel.cs

@@ -1,4 +1,5 @@
-using PixiEditor.Numerics;
+using System.ComponentModel;
+using PixiEditor.Numerics;
 
 namespace PixiEditor.AvaloniaUI.ViewModels.Nodes.Properties;
 
@@ -6,5 +7,29 @@ internal class VecDPropertyViewModel : NodePropertyViewModel<VecD>
 {
     public VecDPropertyViewModel(NodeViewModel node, Type valueType) : base(node, valueType)
     {
+        PropertyChanged += OnPropertyChanged;
+    }
+
+    private void OnPropertyChanged(object? sender, PropertyChangedEventArgs e)
+    {
+        if (e.PropertyName != nameof(Value))
+        {
+            return;
+        }
+        
+        OnPropertyChanged(nameof(XValue));
+        OnPropertyChanged(nameof(YValue));
+    }
+
+    public double XValue
+    {
+        get => Value.X;
+        set => Value = new VecD(value, Value.Y);
+    }
+    
+    public double YValue
+    {
+        get => Value.Y;
+        set => Value = new VecD(Value.X, value);
     }
 }