PurplePen.RectangleHighlight.EraseHighlight C# (CSharp) Method

        public void EraseHighlight(Graphics g, Matrix xformWorldToPixel, Brush eraseBrush)
        {
            PointF[] pts = { new PointF(rect.Left, rect.Bottom), new PointF(rect.Right, rect.Top) };
            xformWorldToPixel.TransformPoints(pts);
            RectangleF rectPixel = RectangleF.FromLTRB(pts[0].X, pts[0].Y, pts[1].X, pts[1].Y);

            rectPixel.Inflate(penWidth / 2F, penWidth / 2F);
            Rectangle r = Util.Round(rectPixel);
            g.FillRectangle(eraseBrush, r);
        }