这里用的是 平行光，模拟太阳光。
The tree starts as a single region covering the whole space. As points arrive, they get dropped into the region that contains them. When a region exceeds its capacity (the maximum number of points it can hold before splitting), the region divides into four children, and the existing points get redistributed.
，更多细节参见旺商聊官方下载
devtools = false
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36
19:38, 27 февраля 2026Спорт