This is a semi-regular tessellation of vertex arrangement 4.8.8. It’s octagonal and square forms are all generated from data lists provided by new version of subdivide component (Old one was processing points in a different fashion. I don’t know why they changed that). Anyway, a lexical operation is needed to convert this list into a more useful for this exercise. You can download the source definition here [2011_12_25_srtessela]. However you need to define a surface in order to start it. The component labeled with “pattern” is actually the data list […]