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)

Bắt đầu bằng việc xem sketch OpenProcessing được liên kết và các tài liệu tham khảo về cycloid để hiểu mô phỏng dự kiến. Không có tệp repository, entry point hoặc test nào được nêu; hoàn thành có nghĩa là thêm một mô phỏng brachistochrone/cycloid hoạt động được bằng p5 hoặc Processing.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.