System.Drawing.Drawing2D.GraphicsPath.Append C# (CSharp) Method

        void Append(float x, float y, PathPointType type, bool compress)
        {
            byte t = (byte) type;
            PointF pt = PointF.Empty;

            /* in some case we're allowed to compress identical points */
            if (compress && (points.Count > 0)) {
                /* points (X, Y) must be identical */
                PointF lastPoint = points [points.Count-1];
                if ((lastPoint.X == x) && (lastPoint.Y == y)) {
                    /* types need not be identical but must handle closed subpaths */
                    PathPointType last_type = (PathPointType) types [types.Count-1];
                    if ((last_type & PathPointType.CloseSubpath) != PathPointType.CloseSubpath)
                        return;
                }
            }

            if (start_new_fig)
                t = (byte) PathPointType.Start;
            /* if we closed a subpath, then start new figure and append */
            else if (points.Count > 0) {
                type = (PathPointType) types [types.Count-1];
                if ((type & PathPointType.CloseSubpath) != 0)
                    t = (byte)PathPointType.Start;
            }

            pt.X = x;
            pt.Y = y;

            points.Add (pt);
            types.Add (t);
            start_new_fig = false;
        }