3D Modeling in Flash

Apparently, a little basic mathematics is all it takes to create real 3D wireframe rendering in Macromedia Flash.  Oliver Knill of the Harvard University Department of Mathematics has developed a set of animated 3D models for teaching about vectorfields.  

What's really cool is the use of Flash.  The .FLA file contains only the blank stage and a reference to the ActionScript.  A single ActionScript file contains the entire rendering and interactive behavior (the ability to rotate the model around all three axes using the keyboard) for the model.   What's more, source code for all examples is GPL'd and is freely available on the Flash/Actionscript project for Multivariable calculus site.