Making a canvas with only x,y values

I have been playing a little with Squareline Studio, and think it is awesome. But nothing could be done without LVGL.

And what I am looking for is not possible in SLS.

So I am curious to how one would be doing something like this: Vectorscope
I should mention that in my case the x,y values on the canvas does not have to be connected as in the video.They just need to be visualized as x,y values (that should be deleted after a second or so). But that is just a matter of programming their “time to live”.

And if it is in fact possible to do. How would one be able to implement it in an SLS generated environment? I have noticed the nomeclature are somwhat different between SLS and LVGL.