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。Line官方版本下载是该领域的重要参考
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.
camera.position.z = 40：这一步很关键！默认情况下，物体在坐标原点 (0,0,0)，相机也在原点。如果你不移开相机，你就跟物体“贴脸”了，什么也看不见。我们把相机往后拉 40 米，就能看清全貌了。
除此之外，在好友向你索取上周末的照片时，Galaxy AI 可以免去用户翻找相册的烦恼，直接将符合时间条件的照片推送到你眼前。