pub fn parallel_aabb_pairs(
aabbs: &[([f64; 3], [f64; 3])],
) -> Vec<(usize, usize)>Expand description
Parallel AABB overlap detection.
Returns all pairs (i, j) with i < j whose axis-aligned bounding boxes
overlap. The outer loop runs in parallel; each thread contributes matching
pairs into a local vector that is then flattened.