"Von Neumann" is named in honor of mathematician and physicist John Von Neumann, whose "middle-square" pseudorandom number generator powers the engine used in this installment.

In computer programming, nothing is completely random, it's all *pseudorandom*. That is, to create a "random" number, you feed a number into a formula and the result is your random number. Usually, computer functions such as `Math.random()`

use the current date (including milliseconds) to feed to their random formula, and this is *random enough*. Yet technically, if you knew the formula, and the number fed to this formula (seed), you'd know the result.

In the case of this August installment, I wanted a random engine which I could feed a specific number, and it would always return the same *random-looking* number (if fed the same seed). I would use the pseudorandom product to scale, rotate, place and color various shapes in a space, creating pseudorandom artwork.

### Middle-Square

Von Neumann came to the rescue with his middle-square method which is extremely easy to work with; quite simply, you square a 4 digit number, and choose the 4 middle digits of the end result.

1111^{2} = 1234321 -> 3452

More elaborate PRNGs have been created, but the simplicity of this middle-square method, and the visual results were exactly fine for my purpose.

### Result

The end result will replicate some pre-drawn shapes a specific number of times, then proceed to rotate them, scale them, animate them, position them and finally color them according to a color array I choose. All of this based on what random-seed the engine is fed. You can either enter this 4-digit random seed in the upper-left textbox, or you can drag the crosshair to use its coordinate to generate a seed for you.

In the next couple of months, I hope to elaborate this engine, add restraints, remove other restraints and generally see where it'll take me. Art happens all the time.