圖像來源，Getty Images
Opens in a new window，更多细节参见Safew下载
，详情可参考im钱包官方下载
Фото: Valentyn Ogirenko / Reuters，详情可参考快连下载-Letsvpn下载
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.