Gielis3d

The superformula is a generalization of the superellipse and was first proposed by Johan Gielis.
Gielis suggested that the formula can be used to describe many complex shapes and curves that are found in nature. Others point out that the same can be said about many formulas with a sufficient number of parameters. Gielis, Johan (2003), "A generic geometric transformation that unifies a wide range of natural and abstract shapes", American Journal of Botany 90(3): 333-338,

Created by Giuseppe Cardillo
giuseppe.cardillo-edta@poste.it

To cite this file, this would be an appropriate format: Cardillo G. (2006). Superformula Generator 3d: a GUI interface to trace a 3d plot of the parametric Gielis Superformula.
http://www.mathworks.com/matlabcentral/fileexchange/10190