From b26573656a5fdd2b87b0096181b4a15cdacee5eb Mon Sep 17 00:00:00 2001
From: donandren <donandren@gmail.com>
Date: Wed, 9 Mar 2016 15:56:40 +0200
Subject: [PATCH] HasInverse Property property of Matrix

---
 src/Perspex.SceneGraph/Matrix.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Perspex.SceneGraph/Matrix.cs b/src/Perspex.SceneGraph/Matrix.cs
index baf38fb767..121ad1667d 100644
--- a/src/Perspex.SceneGraph/Matrix.cs
+++ b/src/Perspex.SceneGraph/Matrix.cs
@@ -53,6 +53,11 @@ namespace Perspex
         /// </summary>
         public bool IsIdentity => Equals(Identity);
 
+        /// <summary>
+        /// HasInverse Property - returns true if this matrix is invertable, false otherwise.
+        /// </summary>
+        public bool HasInverse => GetDeterminant() != 0;
+
         /// <summary>
         /// The first element of the first row
         /// </summary>
@@ -209,6 +214,7 @@ namespace Perspex
             return (_m11 * _m22) - (_m12 * _m21);
         }
 
+
         /// <summary>
         /// Returns a boolean indicating whether the matrix is equal to the other given matrix.
         /// </summary>