show: memory not freed after creating octrees #5
Description
With big point clouds the folloing situation can occur:
Run show with --autoOct and let it load some scans. After a while it will run out of memory and quit. Run show again and it will load the first octrees and continue making more. Repeat until all octrees were created.
It should not be necessary to restart show several times in these situations. Instead, after the show octree is created, the underlying points are not needed anymore and should be freed.
Reported by: josch1337
Original Ticket: slam6d/tickets/5