From bde9c078c56eb3f7864cac17a46315af783fa123 Mon Sep 17 00:00:00 2001
From: Jan-Peter Zurek <j.zurek@swiftconsult.de>
Date: Thu, 20 Jan 2022 13:58:34 +0100
Subject: [PATCH] Add observable. Remove borders from sample to better
 visualize error.

---
 samples/RenderDemo/Pages/Transform3DPage.axaml  | 8 ++++----
 src/Avalonia.Visuals/Media/Rotate3DTransform.cs | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/samples/RenderDemo/Pages/Transform3DPage.axaml b/samples/RenderDemo/Pages/Transform3DPage.axaml
index 8646dc6870..9f369dae98 100644
--- a/samples/RenderDemo/Pages/Transform3DPage.axaml
+++ b/samples/RenderDemo/Pages/Transform3DPage.axaml
@@ -162,24 +162,24 @@
                                   Depth="{Binding Depth}"/>
                     </Border.RenderTransform>
                 </Border>
-                <Border Classes="Test Rect2">
+                <!--<Border Classes="Test Rect2">
                     <Border.RenderTransform>
                         <Rotate3DTransform CenterZ="-100"
                                   Depth="{Binding Depth}"/>
                     </Border.RenderTransform>
-                </Border>
+                </Border>-->
                 <Border Classes="Test Rect3">
                     <Border.RenderTransform>
                         <Rotate3DTransform CenterZ="-100"
                                   Depth="{Binding Depth}"/>
                     </Border.RenderTransform>
                 </Border>
-                <Border Classes="Test Rect4">
+                <!--<Border Classes="Test Rect4">
                     <Border.RenderTransform>
                         <Rotate3DTransform CenterZ="-100"
                                   Depth="{Binding Depth}"/>
                     </Border.RenderTransform>
-                </Border>
+                </Border>-->
             </Canvas>
         </StackPanel>
         <StackPanel Grid.Row="1">
diff --git a/src/Avalonia.Visuals/Media/Rotate3DTransform.cs b/src/Avalonia.Visuals/Media/Rotate3DTransform.cs
index 9a81ae306c..a3af6b8c66 100644
--- a/src/Avalonia.Visuals/Media/Rotate3DTransform.cs
+++ b/src/Avalonia.Visuals/Media/Rotate3DTransform.cs
@@ -64,6 +64,7 @@ public class Rotate3DTransform : Transform
         this.GetObservable(CenterXProperty).Subscribe(_ => RaiseChanged());
         this.GetObservable(CenterYProperty).Subscribe(_ => RaiseChanged());
         this.GetObservable(CenterZProperty).Subscribe(_ => RaiseChanged());
+        this.GetObservable(DepthProperty).Subscribe(_ => RaiseChanged());
     }
 
     /// <summary>