Then again, maybe it all really does go back to Tiggy-Touch-Wood. The truth is that we really do know shockingly little about the history of gesture.
ВсеСтильВнешний видЯвленияРоскошьЛичности，更多细节参见爱思助手下载最新版本
，这一点在heLLoword翻译官方下载中也有详细论述
优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好。关于这个话题，WPS官方版本下载提供了深入分析
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.