- VoxelGenerator no longer inherit VoxelStream
- VoxelStream is now more focused on files
- Nodes have separate stream and generator properties
- Generators use 2 dedicated threads instead of sharing a single one with streams
- TODO Image.lock() is problematic for multithreading
- TODO Voxel graph can cause RWLock contention if edited while it runs
- TODO Saving generator output no longer works, need to put it back
VoxelLodTerrain's block requests were being cancelled constantly.
This commit also contains precision improvement for cancelling
block requests based on distance, which originally was an attempt to
"properly" fix the problem with VoxelLodTerrain, but it didnt fully
worked for that node.
I left it anyways, maybe it will change in the future once a
proper fix is figured out.