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全链路性能调优：实现成本下降 50%
。谷歌浏览器【最新下载地址】是该领域的重要参考
Option 2: For very localized changes, it might even re-evaluate all shortcuts within that one affected cluster.
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.