Octree implementation?

[Tofu Ninja via Digitalmars-d-learn]

On Thursday, 4 February 2016 at 17:56:06 UTC, Marco Leise wrote:
> Am Mon, 01 Feb 2016 02:56:06 +0000
> schrieb Tofu Ninja <emmons0 at purdue.edu>:
>
>> Just out of curiosity, does anyone have an octree 
>> implementation for D laying around? Just looking to save some 
>> time.
>
> I have one written in Delphi that you could prune till it fits.

I ended up writing my own, Benjamin's was a little hard to fit to 
my own code but I got some good ideas from it, particularly I 
didn't really know about loose octrees but they are definitely a 
good idea.