Problem with return -1 about lbvh

[ToruNiina]

I have forgotten almost everything about that issue (I think you mean #1). It is over 4 years ago.
But the issue is closed as completed with a commit, so it should have been fixed at that time.

At least, it seems that the function returns -1 if it cannot find anything in the tree at a glance. The commit (28d7344) linked to #1 changes the range, so possibly it fixes the range of search .

So, the possible causes could be: 1) the bvh was not constructed, 2) you have nothing in the tree, 3) wrong AABB distance calculation, 4) some bug in query_device(bvh, query_nearest) which implements Nick Roussopoulos, Stephen Kelley, Frederic Vincent, "Nearest Neighbor Queries", ACM-SIGMOD (1995). You may find differences between the paper and the implementation (https://github.com/ToruNiina/lbvh/blob/master/lbvh/query.cuh#L80).

If you met an error in your case and environment, please describe your problem in detail with a concrete, reproducible example. Otherwise, I will not be able to find a problem or check if it has been fixed.

Note that, since I don't have much time these days, I may not be able to find the time to fix it. It should take a long time because I would have to start from recalling what the problem was and what I did. But if you send a PullReq, I will review it.