by allowing distinct m parameters in the two terms of the superformula. By replacing the first parameter with y and second parameter with z: This allows the creation of rotationally asymmetric and nested structures. In the following examples a, b, and are 1: References External links Some Experiments on Fitting of Gielis Curves by Simulated Annealing and Particle Swarm Methods of Global Optimization Least Squares Fitting of Chacón-Gielis Curves By the Particle Swarm Method of Optimization Superformula 2D Plotter & SVG Generator Interactive example using JSXGraph SuperShaper: An OpenSource, OpenCL accelerated, interactive 3D SuperShape generator with shader based visualisation (OpenGL3) Simpel, WebGL based SuperShape implementation Geometric shapes Curves Surfaces