Shaping up nicely (Patreon)

Y-shaped trees and treelines are now OK. These are some the most basic tree shapes seen in AC tracks.

I still have to take care of panel-shaped trees (should be no problem for those) and some more exotic shapes (could be problems there).

My ultimate goal is to be able to determine the angle of non-vertical trees. I implemented it in my program but it has yet to be tested and there are other problems I have to take care of first.

Once it's done I will have to gather my courage and ask x4fab (the creator of CSP) for a way to set the angle of trees in TreeFX (It's not in the treeFX configuration parameters as far as I know).