Ryvar: Thanks for the info on 's pull request. That does seem a bit specialized for the ProceduralMeshComponent though, which is more of a general purpose tool. I think if you are building a voxel engine within UE4, you would want to write your own component/scene proxy.
J. J. Franzen: Blueprints are unfortunately a bit slow for big processing of 2D and 3D data, what you are doing would probably be a LOT faster in C++.