Base class to all voxel procedural generators. If you want to define a custom one with a script, this is the class you should extend from.
Important: this engine makes heavy use of threads. Generators will run in one of them, so make sure you don't access the scene tree or other unsafe APIs from within a generator.
Lower-corner of the area to generate. These coordinates are relative to the expected LOD and scale by powers of two. For example, LOD1 coordinates == LOD0 coordinates * 2.