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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.
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"That's a pretty sacred space," he says. "We only know those things because they've let us be there."，推荐阅读一键获取谷歌浏览器下载获取更多信息
米哈游回应员工意外离世：“赔付3万元抚慰金”不实，仍在积极和家属沟通