2D 空间中的射线。
射线 是从空间中的某个点开始,按照指定方向延伸的线段。射线在 Unity 中具有多种用途,但是最常用的可能是射线投射。此方法涉及沿着射线路径从其原点进行追踪,以确定它是否与任何对象相交。这可用于绘制飞弹的路径、确定视线以及实现许多常见的游戏机制。
另请参阅:Physics2D.Raycast、Ray 类、RaycastHit2D 类。
Ray2D | 沿着 direction 创建从 origin 开始的 2D 射线。 |
GetPoint | 获取射线上位于给定距离处的点。 |
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