Minor updates.

src/Triangle.Rendering/GDI/RenderControl.cs

@@ -6,7 +6,6 @@
 
 namespace TriangleNet.Rendering.GDI
 {
-    using System;
     using System.Drawing;
     using System.Drawing.Drawing2D;
     using System.Drawing.Text;
@@ -158,7 +157,7 @@ namespace TriangleNet.Rendering.GDI
             {
                 Graphics g = e.Graphics;
                 g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
-                g.DrawString(coordinate, this.Font, Brushes.White, 10, 10);
+                TextRenderer.DrawText(g, coordinate, Font, new Point(10, 10), Color.White);
             }
         }
 

src/Triangle.Rendering/Projection.cs

@@ -24,7 +24,7 @@ namespace TriangleNet.Rendering
     /// </para>
     /// <para>
     /// Since the upper-left corner of the display is usually the screen coordinate origin
-    /// (0,0), the project will automatically invert the y-axis.
+    /// (0,0), the projection will automatically invert the y-axis.
     /// </para>
     /// </remarks>
     public class Projection
@@ -63,13 +63,16 @@ namespace TriangleNet.Rendering
 
             world = viewport = new RectangleF(screen.X, screen.Y, screen.Width, screen.Height);
 
+            world_ = new TRectangle();
+            scale_ = 0;
+
             Level = 1;
         }
 
         /// <summary>
         /// Initialize the projection.
         /// </summary>
-        /// <param name="nworld">The world that should be transformed to screen coordinates.</param>
+        /// <param name="world">The world that should be transformed to screen coordinates.</param>
         public void Initialize(TRectangle world)
         {
             Level = 1;