I confess I've never used this in a situation where time complexity was at all relevant. For one thing, it is possible that a result only needs to be computed once for each N (and per shape, since this approach works on a wider range of shapes than just spheres).
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...but then the algorithmic complexity goes from O(N) to O(N^2), or at least O(N log N), since points have to interact with each other.
(N denotes the number of points you need to generate)
I confess I've never used this in a situation where time complexity was at all relevant. For one thing, it is possible that a result only needs to be computed once for each N (and per shape, since this approach works on a wider range of shapes than just spheres).