Superellipse

Not sure about all this math but these superellispes look great. From Wikipedia: A superellipse is a geometrical figure which in a cartesian coordinate system can be described as the set of all points (x, y) with where n > 0 and a and b are the radii of the oval shape. The case n = 2 yields an ordinary ellipse; increasing n beyond 2 yields the hyperellipses, which increasingly resemble rectangles; decreasing n below 2 yields hypoellipses which develop pointy corners in the x and y directions and increasingly resemble crosses.