I just uploaded a video on 2D Supershapes created in OpenSCAD, the open source 3D CAD program. 2D Supershapes are based on an equation, the Superformula, proposed by John Gielis around 2000. Gielis suggested that the formula can be used to describe many complex shapes and curves that are found in nature. The possibilities with the Superformula seem endless. OpenSCAD not only let you recreate these Supershapes but also enables the you to 3D print the shapes.