There are many ways to explore ideas for a visual identity project. The traditional way is to find keywords or concepts and sketch ideas to explore those points. The exploration process for me entails a pencil and paper but some people go the unconventional route and that doesn't mean they are wrong. Chiun Hau You shows us how to use programming skills to generate a pattern that he used as base of his branding project.
Chiun is a design student and self-taught programmer. He's been experimenting with his coding skills to assist on his visual identity design workflow. Here's the link of his program on Codepen, it's open source! http://codepen.io/chiunhauyou/full/qbeyqe/