Tree ring pattern

Using random and Perlin Noise, I created a tree ring that randomly grows with a spectrum of tree trunk color.

You can see my code at GitHub

I am using GitHub as often as I can to back up and document my code. 

After this, I wanted to explore with more organic shape than perfect circles. They are all not there yet, but beginnings of my textile exploration.

While I was exploring, I found Henon Phase. I would love to explore more on this.