RPH Graphics Extensions

public static class GraphicsExtensions
    {
        public enum UITextAlignment
        {
            TOP_LEFT,
            TOP_CENTER,
            TOP_RIGHT,

            CENTER_LEFT,
            CENTER_CENTER,
            CENTER_RIGHT,

            BOTTOM_LEFT,
            BOTTOM_CENTER,
            BOTTOM_RIGHT
        }

        public static void DrawText(this Graphics graphics, string text, string font, float fontSize, Color color, UITextAlignment alignment)
        {
            var graphicsSize = Graphics.MeasureText(text, font, fontSize);
            var gw = graphicsSize.Width;
            var gh = graphicsSize.Height;
            var screenSize = Game.Resolution;
            var rw = screenSize.Width;
            var rh = screenSize.Height;

            var widthRight = rw - gw;
            var widthHalf = rw / 2.0f - gw / 2.0f;
            var heightHalf = rh / 2.0f - gh / 2.0f;
            var heightFixed = rh - gh * 1.5f;

            switch (alignment)
            {
                case UITextAlignment.TOP_LEFT:
                    graphics.DrawText(text, font, fontSize, new PointF(0, 0), color);
                    break;
                case UITextAlignment.TOP_CENTER:
                    graphics.DrawText(text, font, fontSize, new PointF(widthHalf, 0), color);
                    break;
                case UITextAlignment.TOP_RIGHT:
                    graphics.DrawText(text, font, fontSize, new PointF(widthRight, 0), color);
                    break;
                case UITextAlignment.CENTER_LEFT:
                    graphics.DrawText(text, font, fontSize, new PointF(0, heightHalf), color);
                    break;
                case UITextAlignment.CENTER_CENTER:
                    graphics.DrawText(text, font, fontSize, new PointF(widthHalf, heightHalf), color);
                    break;
                case UITextAlignment.CENTER_RIGHT:
                    graphics.DrawText(text, font, fontSize, new PointF(widthRight, heightHalf), color);
                    break;
                case UITextAlignment.BOTTOM_LEFT:
                    graphics.DrawText(text, font, fontSize, new PointF(0, heightFixed), color);
                    break;
                case UITextAlignment.BOTTOM_CENTER:
                    graphics.DrawText(text, font, fontSize, new PointF(widthHalf, heightFixed), color);
                    break;
                case UITextAlignment.BOTTOM_RIGHT:
                    graphics.DrawText(text, font, fontSize, new PointF(widthRight, heightFixed), color);
                    break;
                default:
                    throw new ArgumentOutOfRangeException(nameof(alignment), alignment, null);
            }
        }
    }