rotation functioning in rectangle renderer.

CameraTest/CameraTest.cs

@@ -99,20 +99,22 @@ namespace CameraTest
 
             base.Update(gameTime);
         }
-
+        float angleDeg = 0;
         /// <summary>
         /// This is called when the game should draw itself.
         /// </summary>
         /// <param name="gameTime">Provides a snapshot of timing values.</param>
         protected override void Draw(GameTime gameTime)
         {
+            angleDeg++;
+            if (angleDeg > 360) angleDeg = 0;
             GraphicsDevice.Clear(Color.Black);
             rr.Begin(true);
             rr.Draw(25, 25, 70, 70, Color.Purple);
             rr.End();
 
             rr.Begin(false);
-            rr.Draw(75, 75, 70, 70, Color.Green);
+            rr.Draw(75, 75, 70, 70, Color.Green, MathHelper.ToRadians(angleDeg));
             rr.End();
             base.Draw(gameTime);
         }