unit repeat

In her article A Nine- and Twelve-Pointed Star Polygon Design of the Tashkent Scrolls Lynn Bodner ananyses the construction of a pattern that combines 12-pointed and 9-pointed stars as it appears in the Tashkent scrolls, with the Topkapi scrolls among the most import historical source of drawn patterns. In an important first step a unit repeat is defined to placet he bundles of radii. This first applet describes how it’s done.