From 569e7d29fcad1e508bf63b536bd90bfcb0bde8b2 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@users.noreply.github.com>
Date: Fri, 1 Mar 2019 18:08:34 +0100
Subject: [PATCH] Don't try to invert a non-invertible matrix.

Fixes #2053.
---
 .../Rendering/SceneGraph/GeometryNode.cs              | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/Avalonia.Visuals/Rendering/SceneGraph/GeometryNode.cs b/src/Avalonia.Visuals/Rendering/SceneGraph/GeometryNode.cs
index 46d264e518..2d01b117d9 100644
--- a/src/Avalonia.Visuals/Rendering/SceneGraph/GeometryNode.cs
+++ b/src/Avalonia.Visuals/Rendering/SceneGraph/GeometryNode.cs
@@ -89,9 +89,14 @@ namespace Avalonia.Rendering.SceneGraph
         /// <inheritdoc/>
         public override bool HitTest(Point p)
         {
-            p *= Transform.Invert();
-            return (Brush != null && Geometry.FillContains(p)) || 
-                (Pen != null && Geometry.StrokeContains(Pen, p));
+            if (Transform.HasInverse)
+            {
+                p *= Transform.Invert();
+                return (Brush != null && Geometry.FillContains(p)) ||
+                    (Pen != null && Geometry.StrokeContains(Pen, p));
+            }
+
+            return false;
         }
     }
 }