More nullable fixes, make SetTransform a part of base Renderer.

DaggerFramework/Source/Rendering/Renderer.cs

@@ -79,13 +79,25 @@ namespace DaggerFramework.Rendering
         /// <param name="color">Background color.</param>
         public abstract void ClearBackground(Color color);
 
+        public void ResetTransform()
+        {
+            transformPosition = Vector2.Zero;
+            transformOffset = Vector2.Zero;
+            transformRotation = 0.0f;
+        }
+
         /// <summary>
         /// Sets transforms for the next draw operation.
         /// </summary>
         /// <param name="position">Global transform position.</param>
         /// <param name="offset">Local offset point around which shapes will rotate.</param> 
         /// <param name="rotation">Rotation.</param>
-        public abstract void SetTransform(Vector2 position, Vector2 offset, float rotation = 0.0f);
+        public void SetTransform(Vector2 position, Vector2 offset, float rotation = 0.0f)
+        {
+            transformPosition = position;
+            transformOffset = offset;
+            transformRotation = rotation;
+        }
         /// <summary>
         /// Sets the transform for the next draw operation.
         /// </summary>
@@ -127,6 +139,9 @@ namespace DaggerFramework.Rendering
         /// <param name="id">Texture to draw.</param>
         /// <param name="tint">Texture tint.</param>
         public abstract void DrawTexture(Texture2d texture, Color tint);
+
+        protected Vector2 transformPosition, transformOffset;
+        protected float transformRotation;
     }
 
     public enum Msaa