rotation functioning in rectangle renderer.

RecrownedAthenaeum/Render/RectangleRenderer.cs

@@ -75,22 +75,22 @@ namespace RecrownedAthenaeum.Render
         /// <param name="height">Height of rectangle.</param>
         /// <param name="color">Color of all vertices of this rectangle.</param>
         /// <param name="rotation">Rotation of rectangle. Default is 0 radians.</param>
-        /// <param name="filled">If this rectangle should be filled.</param>
         public void Draw(int x, int y, int width, int height, Color color, float rotation = 0)
         {
             primitiveBatch.primitiveCount = filled ? 3 : 4;
             Vector2[] corners = new Vector2[4];
-            corners[0] = new Vector2(x, y);
-            corners[1] = new Vector2(x + width, y);
-            corners[2] = new Vector2(x + width, y + height);
-            corners[3] = new Vector2(x, y + height);
+            corners[1] = new Vector2 (width, 0);
+            corners[2] = new Vector2(width, height);
+            corners[3] = new Vector2(0, height);
 
             if (rotation != 0)
             {
                 Matrix rotMat = Matrix.CreateRotationZ(rotation);
                 for (int i = 0; i < corners.Length; i++)
                 {
-                    Vector2.Transform(corners[i], rotMat);
+                    corners[i] = Vector2.Transform(corners[i], rotMat);
+                    corners[i].X += x;
+                    corners[i].Y += y;
                 }
             }