Ulam Spiral Screen Saver For MacOS
The Ulam Spiral is a graphical representation of positive prime numbers. It was discovered and named after the mathematician Stanislaw Ulam in 1963. The spiral is constructed by circling counter-clockwise from an origin point on a square grid. Each traversal of a grid cell represents the next number on the positive number line. If said number is prime, it is marked. Otherwise, it is ignored. Once the algorithm is sufficiently played out, what seems like a though provoking pattern begins to appear.
Check out the releases tab and download the latest version. Double click on the .saver file to install it. Once Desktop & Screen Saver preferences opens automatically, choose the Ulam Spiral screen saver from the list of screen savers.
You can start developing by opening the UlamSpiral.xcodeproj file in Xcode and building the project (⌘ + B). You can then install the screen saver by right-clicking on the Products/UlamSpiral.saver file and choosing Open With External Editor.
If you would like to learn more about Ulam Spirals, check out the wikipedia page on it. Additionally, Numberphile made a great YouTube video covering Ulam Spirals and it is also a great resource.