public Matrix Transform(GraphicsDevice graphicsDevice)
    {
        float ViewportWidth = graphicsDevice.Viewport.Width;
        float ViewportHeight = graphicsDevice.Viewport.Height;

        matrixTransform =
          Matrix.CreateTranslation(new Vector3(-cameraPosition.X, -cameraPosition.Y, 0)) *
              Matrix.CreateRotationZ(Rotation) *
              Matrix.CreateScale(new Vector3(Zoom, Zoom, 0)) *
              Matrix.CreateTranslation(
                    new Vector3(ViewportWidth * 0.5f, ViewportHeight * 0.5f, 0));
        return matrixTransform;
    }

//Offsets any cam location by a zoom scaled window bounds
    Vector2 CamCenterOffset
    {
        get { return new Vector2((game.Window.ClientBounds.Height / Zoom)
             * 0.5f, (game.Window.ClientBounds.Width / Zoom) * 0.5f);
        }
    }

    //Scales the mouse.X and mouse.Y by the same Zoom as everything.
    Vector2 MouseCursorInWorld
    {
        get
        {
            currMouseState = Mouse.GetState();
            return cameraPosition + new Vector2(currMouseState.X / Zoom,
                currMouseState.Y / Zoom);
        }
    }