1 files changed, 27 insertions, 0 deletions

diff --git a/src/Editor/FPF/PresentationCore/System.Windows.Media.GeometryGroup.cs b/src/Editor/FPF/PresentationCore/System.Windows.Media.GeometryGroup.cs
new file mode 100644
index 0000000..3bfc123
--- /dev/null
+++ b/src/Editor/FPF/PresentationCore/System.Windows.Media.GeometryGroup.cs
@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace System.Windows.Media
+{
+    public class GeometryGroup : System.Windows.Media.Geometry
+    {
+        public List<Geometry> Children { get; } = new List<Geometry>();
+
+        public override Rect Bounds
+        {
+            get
+            {
+                if (Children.Count == 0)
+                    return Rect.Empty;
+                var union = Children[0].Bounds;
+                foreach (var c in Children.Skip(1))
+                    union.Union(c.Bounds);
+                return union;
+            }
+        }
+        public override bool IsEmpty()
+        {
+            return !Children.Any(c => !c.IsEmpty());
+        }
+    }
+}
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