Thanks a lot to Puybaret for taking the time to explain how this could be done. Models updated accordingly (I hope) in SF 3D models 261 . Even if the simplest one at 235 kB / 93 kB compressed may have shortcomings, it is pretty nice to get an entire forest into a 140 kB .sh3d file. ok

Test video: tree_grove_sml.mp4.

Test image: