Joe FayTechnology Reporter
The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
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// ⚠️ 易错点8：长度计算公式写错（比如right-left 或 right-left-1）
时隔五年，MacBook Pro 大升级