Topic change: How to make random irregular polygons?

New topic: I made a scrolling background but I want to make irregular polygons with a specified amount of sides is there any way of doing so?

See this post http://twolivesleft.com/Codea/Talk/discussion/comment/20113#Comment_20113
Look at the one by @tnlogy

I know how to do it but im not sure if I can get just an animated image for the meteors or whether I have to create them indivudually and give them move across a select part of the screen like 4000x4000 pixels, Im just wondering what the best way is thanks!

The Bit Invader demo project in Codea has top down scrolling stars like that

yeah thanks @Ignatz I hadnt seen that before, like that but much bigger! Cheers

the physics demo project shows a lot of random polygons