Unity 插值运算 Vector3.Lerp(transform.position, targetPos, smoothing * Time.deltaTime);

1）Vector3.Lerp

v = Vector3.Lerp(Vector3 from , Vector3 to, float t)等价于

v = from + （to - from） * t

t∈[0,1]。t = 0 时，v = from; t = 1 时，v = to;

2）应用

16行 transform.position = Vector3.Lerp(transform.position, targetPos, 1* Time.deltaTime);

则表示transform所在的GameObject 从当前位置，1s之后到达目标点targetPos。

参考资料：http://www.manew.com/blog-42778-2524.html