diff --git a/ANX.Framework/Properties/AssemblyInfo.cs b/ANX.Framework/Properties/AssemblyInfo.cs
index 851e6763..2c2c220e 100644
--- a/ANX.Framework/Properties/AssemblyInfo.cs
+++ b/ANX.Framework/Properties/AssemblyInfo.cs
@@ -31,8 +31,8 @@ using System.Runtime.InteropServices;
 //
 // Sie können alle Werte angeben oder die standardmäßigen Build- und Revisionsnummern 
 // übernehmen, indem Sie "*" eingeben:
-[assembly: AssemblyVersion("0.4.26.*")]
-[assembly: AssemblyFileVersion("0.4.26.0")]
+[assembly: AssemblyVersion("0.4.27.*")]
+[assembly: AssemblyFileVersion("0.4.27.0")]
 
 [assembly:InternalsVisibleTo("ANX.Framework.Windows.DX10")]
 [assembly:InternalsVisibleTo("ANX.RenderSystem.Windows.DX11")]
diff --git a/ANX.Framework/Vector2.cs b/ANX.Framework/Vector2.cs
index 007e355c..fee9040a 100644
--- a/ANX.Framework/Vector2.cs
+++ b/ANX.Framework/Vector2.cs
@@ -448,7 +448,12 @@ namespace ANX.Framework
 
         public static void Transform(ref Vector2 value, ref Quaternion rotation, out Vector2 result)
         {
-            throw new NotImplementedException();
+            float x = 2 * (-rotation.Z * value.Y);
+            float y = 2 * (rotation.Z * value.X);
+            float z = 2 * (rotation.X * value.Y - rotation.Y * value.X);
+
+            result.X = value.X + x * rotation.W + (rotation.Y * z - rotation.Z * y);
+            result.Y = value.Y + y * rotation.W + (rotation.Z * x - rotation.X * z);
         }
 
         public static void Transform(Vector2[] sourceArray, int sourceIndex, ref Matrix matrix, Vector2[] destinationArray, int destinationIndex, int length)
diff --git a/ANX.Framework/Vector3.cs b/ANX.Framework/Vector3.cs
index 36da2672..e084b986 100644
--- a/ANX.Framework/Vector3.cs
+++ b/ANX.Framework/Vector3.cs
@@ -534,13 +534,13 @@ namespace ANX.Framework
 
         public static void Transform(ref Vector3 value, ref Quaternion rotation, out Vector3 result)
         {
-            result.X = (rotation.Y * value.Z - rotation.Z * value.Y);
-            result.Y = (rotation.Z * value.X - rotation.X * value.Z);
-            result.Z = (rotation.X * value.Y - rotation.Y * value.X);
+            float x = 2* (rotation.Y * value.Z - rotation.Z * value.Y);
+            float y = 2* (rotation.Z * value.X - rotation.X * value.Z);
+            float z = 2* (rotation.X * value.Y - rotation.Y * value.X);
 
-            result.X = value.X + result.X * rotation.W + (rotation.Y * result.Z - rotation.Z * result.Y);
-            result.Y = value.Y + result.Y * rotation.W + (rotation.Z * result.X - rotation.X * result.Z);
-            result.Z = value.Z + result.Z * rotation.W + (rotation.X * result.Y - rotation.Y * result.X);
+            result.X = value.X + x * rotation.W + (rotation.Y * z - rotation.Z * y);
+            result.Y = value.Y + y * rotation.W + (rotation.Z * x - rotation.X * z);
+            result.Z = value.Z + z * rotation.W + (rotation.X * y - rotation.Y * x);
         }
 
         public static void Transform(Vector3[] sourceArray, ref Matrix matrix, Vector3[] destinationArray)
diff --git a/ANX.Framework/Vector4.cs b/ANX.Framework/Vector4.cs
index 25a40e7d..77a56a03 100644
--- a/ANX.Framework/Vector4.cs
+++ b/ANX.Framework/Vector4.cs
@@ -529,7 +529,14 @@ namespace ANX.Framework
 
         public static void Transform(ref Vector4 value, ref Quaternion rotation, out Vector4 result)
         {
-            throw new NotImplementedException();
+            float x = 2 * (rotation.Y * value.Z - rotation.Z * value.Y);
+            float y = 2 * (rotation.Z * value.X - rotation.X * value.Z);
+            float z = 2 * (rotation.X * value.Y - rotation.Y * value.X);
+
+            result.X = value.X + x * rotation.W + (rotation.Y * z - rotation.Z * y);
+            result.Y = value.Y + y * rotation.W + (rotation.Z * x - rotation.X * z);
+            result.Z = value.Z + z * rotation.W + (rotation.X * y - rotation.Y * x);
+            result.W = value.W;
         }
 
         public static void Transform(Vector4[] sourceArray, ref Matrix matrix, Vector4[] destinationArray)