Converted this script into unity:
This demo is using separate dummy gameobject+linerenderer for each branch, so it gets quite slow,
but atleast the tree drawing works…
webplayer source download: (webplayer is not using any materials, so thats why the color)
Screenshots: (using different materials widths for linerenderer)
Great stuff! 
I like how you managed to get leaves on the tree so that it could be used as an actual game asset. Add a little randomness to the branching and you’d have a great looking tree creation tool. I’ve also managed to create a fractal tree generator in Unity. Feel free to check it out at http://tonydincau.com/project/fractal-trees/ The source code is available for download.
