As Close As Possible — nearest neighbor search in Rust.
use acap::euclid::Euclidean;
use acap::vp::VpTree;
use acap::NearestNeighbors;
let tree = VpTree::balanced(vec![
Euclidean([3, 4]),
Euclidean([5, 12]),
Euclidean([8, 15]),
Euclidean([7, 24]),
]);
let nearest = tree.nearest(&[7, 7]).unwrap();
assert_eq!(nearest.item, &Euclidean([3, 4]));
assert_eq!(nearest.distance, 5);