The algorithm maintains a running "best distance" that starts at infinity. As it walks the tree, it checks each visited point and updates the best distance if it finds something closer. Before recursing into a child node, it checks whether the closest possible point in that child's bounding box is farther than the current best. If so, the entire subtree gets pruned.
The free plan from Copy AI is a welcome sight, however, it is just suitable for testing the software.，这一点在Line官方版本下载中也有详细论述
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Лариса Долина. Фото: Алексей Смагин / Коммерсантъ