Z-Ground Terrain demo

This demo was just to test my way of rendering terrain in z-ground engine. It is half-finished, not smooth, doesn't 'looks right', and the code is a mess. All in all the result is not very satisfactory but at least it prove that my way works!After some optimization it will be usable, I think.

It looks like some kind of voxel rendering effect but actually not.(I also write one 3D Voxel Terrain engine using as3.0, if you are interested, here it is(with code))
I use nothing but some basic ideas of z-ground to create it. Again, this swf was created by pure code, the textures were generated by my texture generator engine on the fly.
By the way, my next demo of z-ground, which is almost done, is about lighting and shadow, water reflection effect of z-ground engine.

Demo:HERE(arrow key to move)
(BE CAREFUL! It needs lots of time for pre-rendering,to avoid crashing you computer,download it and use a flash player to view. )
Code:UNDER OPTIMIZATION