RaycastHit 光线投射碰撞（射线碰撞检测）

# RaycastHit 光线投射碰撞（射线碰撞检测）

Struct

Structure used to get information back from a raycast.

用来获取从 raycast 函数中得到的信息反馈的结构。

参见：[Physics.Raycast](../Physics/Physics.Raycast.html), [Physics.Linecast](../Physics/Physics.Linecast.html), [Physics.RaycastAll](../Physics/Physics.RaycastAll.html).

### Variables**变量**

* [point](RaycastHit.point.html)
  The impact point in world space where the ray hit the
  collider.
  在世界空间中，射线碰到碰撞器的碰撞点。
* [normal](RaycastHit.normal.html)
  The normal of the surface the ray hit.
  射线所碰到的表面的法线。
* [barycentricCoordinate](RaycastHit.barycentricCoordinate.html)
  The barycentric coordinate of the triangle we
  hit.
  所碰到的三角形的重心坐标。
* [distance](RaycastHit.distance.html)
  The distance from the ray's origin to the impact
  point.
  从光线的原点到碰撞点的距离。
* [triangleIndex](RaycastHit.triangleIndex.html)
  The index of the triangle that was hit.
  碰到的三角形的索引。
* [textureCoord](RaycastHit.textureCoord.html)
  The uv texture coordinate at the impact
  point.
  在碰撞点的 UV 纹理坐标。
* [textureCoord2](RaycastHit.textureCoord2.html)
  The secondary uv texture coordinate at the impact
  point.
  碰撞点的第二个 UV 纹理坐标。
* [lightmapCoord](RaycastHit.lightmapCoord.html)
  The uv lightmap coordinate at the impact
  point.
  所在碰撞点的光照图 UV 坐标。
* [collider](RaycastHit.collider.html)
  The Collider that was hit.
  碰到的碰撞器。
* [rigidbody](RaycastHit.rigidbody.html)
  The Rigidbody of the collider that was hit. If the collider
  is not attached to a rigidbody then it is
  null.
  碰到的碰撞器的 Rigidbody。如果该碰撞器没有附加刚体那么它为 null。
* [transform](RaycastHit.transform.html)
  The Transform of the rigidbody or collider that was
  hit.
  碰到的刚体或碰撞器的变换。