[core] Faster ground profile querying. #824
Merged
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Fixes #666
The snippet mentioned here #799 (comment) is now taking 6us instead of 13us on my machine (3us if all points are co-located, 11us is they are extremely far away from each other). I don't think it is possible to do any better at this point without significant refactoring, but I think it is good enough now.
In particular, this meaningful snippet runs in 17us on my machine: