在 2D 物理中,有关射线投射检测到的对象的返回信息。
射线投射用于检测位于射线路径上的对象,在概念上类似于向场景中发射激光束并观察它命中的对象。RaycastHit2D 类由 Physics2D.Raycast 和其他函数使用,返回有关射线投射检测到的对象的信息。
另请参阅:Physics2D.Raycast、Ray2D 类。
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