This has got alot of potential, a profesional look, the use of it looks very easy and most important, you've added a LOD factor which is very usefull when it comes to the FPS related to a (tree)generator !!
Amazing is the approriate word

Cheers

Frazzle

Antec® Case
Intel® X58 Chipset
Intel® i7 975 Quad Core
8 GB RAM DDR3
SSD OCZ®-VERTEX2 3.5 x4 ; HD 600 GB
NVIDIA® GeForce GTX 295 Memory 1795GB