oh yeah it it supposed to be always oriented this way, you are right. I guess it did not put me in trouble while doing this kata haha !
Anyway, thanks for sharing desmos, I know geogebra is maybe the most used in France, where I come from.
So it's nice to see other useful tools !

Well I think if people are complaining there should be some kind of reason, am I wrong ?

The whole point of my message was to add a tag on the kata.

Thank you for the two links, but unfortunately I could not get what was wrong thanks to them :(

I tried a few other solutions, and one of them with changed boolean tests which happened to be much quicker!

Honestly, I've been trying hard for a few hours. And the only problem I have is the optimization problem : impossible to get it done in less than 12s.
I can understand that some people naturally find a sufficiently optimized solution.
But I think that for some people like me, who don't know anything about optimization, this kata is very frustrating : quite easy to find a solution that works but that won't get the job done in time.

Anyway, for these reasons, I think this kata should be tagged with "Optimization". This way, it would make it clear to the people that it is not just a matter of algorithms.
Also, it could avoid to get people working on solutions thinking "I don't care about the optimization of my system" and then start from scratch because they did not consider it at first.

Really nice Kata.
I think anyone having trouble on where to start should consider using geogebra. Thanks to its cursors, it is easy to draw very quikcly the inclined rectangles.
Here's my draft, that I thought was quite useful, even though it is not perfect. If it can help anyone to see better these damned rectangles... ;)

https://www.geogebra.org/m/nj5bfxbs

My god this comment is in fact very helpful thanks

Interesting, but not 6 kyu I think.
And my god the "" and float cases are frustrating when you forget them and thought you were done with the kata.