Seashell

It's inspired by [The math of the shells](https://www.youtube.com/watch?v=pKHWzmxw_NI).

> This film illustrates how the great majority of shells existing in nature can be generated by a fixed set of equations by simply varying some parameters.

The source code requires [OpenSCAD](http://openscad.org) and [dotSCAD](https://github.com/JustinSDK/dotSCAD). It can be found on [dotSCAD/examples/spiral/seashell.scad](https://github.com/JustinSDK/dotSCAD/blob/master/examples/spiral/seashell.scad).

- [OpenSCAD Documentation - Traditional Chinese](https://openhome.cc/Gossip/OpenSCAD/)
- [OpenSCAD Documentation - English](https://openhome.cc/eGossip/OpenSCAD/)