Brachistochrone/Cycloid simulation

A brachistochrone is the fastest route between two points in an object is thrown from point A to point B in the presence of gravity. It is really cool. There are some fun properties of this Brachistochrone. Vsauce made an awesome video and demonstration on it with Adam Savage.
I think this simulation can me made in p5 and I have attempted to do this on my own. I got some kind of success but not really. You can look at my progress here [https://www.openprocessing.org/sketch/400633](https://www.openprocessing.org/sketch/400633
)
I think this would be something cool to do either in p5 or in processing.
Here's a link to the video - [https://www.youtube.com/watch?v=skvnj67YGmw](https://youtu.be/skvnj67YGmw)
Here's a link to the cycloids wiki page - [https://en.wikipedia.org/wiki/Cycloid](https://en.wikipedia.org/wiki/Cycloid)

Commencez par examiner le sketch OpenProcessing lié et les références à la cycloïde afin de comprendre la simulation prévue. Aucun fichier du dépôt, point d’entrée ou test n’est indiqué ; le travail serait terminé en ajoutant une simulation fonctionnelle de brachistochrone/cycloïde dans p5 ou Processing.

Rédigé par le modèle d'indexation à partir du texte de l'issue.