table, cut & paste
I tried “cutting” the image of one of the little balls and pasting it onto the image of the table. Then I made copies of the ball. These copies can be animated using Actionscript.
I must say, I am a bit pleasantly surprised. The results are not perfect, but I was expecting them to be terrible and that I would need to resort to a vector-based solution. Maybe there’s some potential in this approach. I will need to explore this.