private static void TessellateRectangleRoundedCorners(Rectangle rect, List <Geometry> geoms, TessellationOptions tessellationOptions) { var contour = BuildRectangleContour(rect); var shape = new Shape() { Contours = new BezierContour[] { contour }, PathProps = rect.PathProps, Fill = rect.Fill, FillTransform = rect.FillTransform }; VectorUtils.TessellateShape(shape, geoms, tessellationOptions, true); }