“Jobe Makar has a post about the MatrixTransformer”:https://jobemakar.blogspot.com/2007/06/rotating-around-point.html (found it today)
and “Robert Penner”:https://www.robertpenner.com/ commented a few times. The MatrixTransformer is pretty sweet, from what I saw on the post, but what caught my eye most is:

bq. Hi Jobe, I wrote the fl.motion package; it’s cool to see you found MatrixTransformer.

Nice! I had no idea Robert was still in the game. I figured he went supernova and burned out on us. The dude is super smart though and brought us such Actionscript sweetness like the tween classes.

Anyways…Robert, good to see you are still rocking AS and definitely glad to see you’re still working with Adobe! Keep it up!

Note:
You can read “Penner’s blog here”:https://robertpenner.com/flashblog/index.html.