Incorporate superformula into supershape

[kfahn22]

I am now have second thoughts about adding the 3D version, and have incorporated the superformula into the function for the supershape.

I have been experimenting with rendering the 3d supershape with lygia (and re-read Inigo Quelez's article on the inadvisability of including trig in 3d SDFs.) While there are some cool shapes that can be rendered, the SDF breaks for certain parameter combinations/interactions with other SDFs and has a slow load time. I am sorry that I didn't try to check this before!!

If you are interested, here are two sketches you can look at:
p5.Geometry version:
https://editor.p5js.org/kfahn/sketches/qwA1Z4kq5
Using lygia:
https://editor.p5js.org/kfahn/sketches/aS_XU6Rat

[patriciogonzalezvivo]

Thank you! Agree that this feel better.