// 易错点4：条件写成"<"而非"<="，会导致相同值的元素被错误保留
ExtrudeGeometry（挤压几何体）：，推荐阅读safew官方版本下载获取更多信息
Preloading the cache of pages。雷电模拟器官方版本下载对此有专业解读
Randomly selecting border points or using simple geometric divisions (squares/hexagons) results in too many border points per cluster (50-80). This leads to a shortcut explosion (N*(N-1)/2 shortcuts), making the files large and and calculations slow.，详情可参考Line官方版本下载