I'm only really worried about the trunk/branches themselves. The leaves are easy to instance on later. A "bolt the branches on" approach would generate a model that was not one solid mesh. Just branches shoved into other branches. I'd love a fractal that could be grown out a defined area and when it sees that it has entered a volume, split, and keep splitting until it has left that volume and "end".
I don't need all the pretty stuff. . . Just the ability to shape the growth of a fractal.
I don't need all the pretty stuff. . . Just the ability to shape the growth of a fractal.