what is prime_playground fr?

Prime Playground turns prime numbers into a shape you can look at and rotate in 3D. A Python script generates a self contained browser page that draws a path connecting one point per prime number, and you view and explore that path with your mouse in a 3D viewer built on Three.js, a JavaScript library for graphics that runs on your graphics card. The path is built one prime at a time. Starting from wherever the path currently points, the program decides how far to step forward and, after placing each new point, chooses a new direction for the next step. You have several options for how that direction changes: some rules always turn around the same axis, keeping the path flat, while others rotate around different axes for different primes, letting the path curve out into three dimensions. Some rules base the turn on a fixed angle you choose, while others calculate the turn from properties of the prime itself, like the gap to the previous prime or the sum of its digits. Separately from direction, you can also control how far each step travels. Some settings make every step the same length, while others make the steps longer or shorter depending on the size of the gap between primes, the digit sum of the prime, or how large the prime number is overall. There is also an optional setting that adds extra up and down movement to each step, layered on top of whichever direction rule you picked. To run it, you need Python 3.11 or newer, and you either run the Python script directly or, on Windows, double click a provided launcher file. Either way, it regenerates the viewer, starts a small local web server on your own computer, and opens the result in your browser. All of the actual path calculation and rendering happens in the browser itself, not in Python. The project is released under the MIT license.