diff --git a/GerberLibrary/Artwork Related/SVGWriter.cs b/GerberLibrary/Artwork Related/SVGWriter.cs
index a41236f..d77a6ed 100644
--- a/GerberLibrary/Artwork Related/SVGWriter.cs	
+++ b/GerberLibrary/Artwork Related/SVGWriter.cs	
@@ -122,9 +122,9 @@ public CompositingMode CompositingMode
                 throw new NotImplementedException();
             }
         }
-
-        public bool Dotted { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
-        System.Drawing.Drawing2D.InterpolationMode GraphicsInterface.InterpolationMode { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
+        bool _Dotted;
+        public bool Dotted { get { return _Dotted; } set { _Dotted = value; }}
+        System.Drawing.Drawing2D.InterpolationMode GraphicsInterface.InterpolationMode { get { return System.Drawing.Drawing2D.InterpolationMode.Default; } set {; }}
 
         public Color BackgroundColor = Color.White;
         public List<string> OutputLines = new List<string>();
diff --git a/GerberLibrary/Core/GraphicsInterface.cs b/GerberLibrary/Core/GraphicsInterface.cs
index db27d19..2837cd7 100644
--- a/GerberLibrary/Core/GraphicsInterface.cs
+++ b/GerberLibrary/Core/GraphicsInterface.cs
@@ -165,7 +165,8 @@ public CompositingMode CompositingMode
             }
         }
 
-        public bool Dotted { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
+        bool _Dotted = false;
+        public bool Dotted { get { return _Dotted; } set { _Dotted = value; }}
 
         public void DrawRectangle(Color color, float x, float y, float w, float h)
         {
diff --git a/GerberViewer/GLGraphicsInterface.cs b/GerberViewer/GLGraphicsInterface.cs
index 3b31bee..1208dec 100644
--- a/GerberViewer/GLGraphicsInterface.cs
+++ b/GerberViewer/GLGraphicsInterface.cs
@@ -128,9 +128,10 @@ public static Matrix4 Mat4FromMat(System.Drawing.Drawing2D.Matrix inp)
 
         }
 
-        public CompositingMode CompositingMode { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
-        public System.Drawing.Drawing2D.InterpolationMode InterpolationMode { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
-        public bool IsFast { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
+        public CompositingMode CompositingMode { get { return CompositingMode.SourceCopy; } set {; }}
+        public System.Drawing.Drawing2D.InterpolationMode InterpolationMode { get { return System.Drawing.Drawing2D.InterpolationMode.Default; } set {; } }
+
+        public bool IsFast { get { return true; } set {; } }
         private System.Drawing.Drawing2D.Matrix trans = new System.Drawing.Drawing2D.Matrix();
 
         public System.Drawing.Drawing2D.Matrix Transform
@@ -429,6 +430,11 @@ public void TranslateTransform(float p1, float p2)
         {
 
         }
+
+        public void FillTriangles(List<Triangle> triangles, Color C)
+        {
+            throw new NotImplementedException();
+        }
     }
 
 
@@ -734,7 +740,8 @@ public CompositingMode CompositingMode
             }
         }
 
-        public bool Dotted { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
+        bool _Dotted;
+        public bool Dotted { get { return _Dotted; } set { _Dotted = value; }}
 
         public void DrawString(PointD pos, string text, double scale, bool center, float r = 0.2f, float g = 0.2f, float b = 0.2f, float a = 1.0f)
         {
@@ -871,5 +878,10 @@ internal Matrix4 GetGlMatrix()
         {
             return Mat4FromMat(trans);
         }
+
+        public void FillTriangles(List<Triangle> triangles, Color C)
+        {
+            throw new NotImplementedException();
+        }
     }
 }