static function Atan2 (y : float, x : float) : float
Description描述
Returns the angle in radians whose Tan is y/x.
以弧度为单位计算并返回 y/x 的反正切值。返回值表示相对直角三角形对角的角，其中 x 是临边边长，而 y 是对边边长。
Return value is the angle between the x-axis and a 2D vector starting at zero and terminating at (x,y).
返回值为x轴和一个零点起始在(x,y)结束的2D向量的之间夹角。
using UnityEngine;
using System.Collections;
public class example : MonoBehaviour {
public Transform target;
void Update() {
Vector3 relative = transform.InverseTransformPoint(target.position);
float angle = Mathf.Atan2(relative.x, relative.z) * Mathf.Rad2Deg;
transform.Rotate(0, angle, 0);
}
}// Usually you use transform.LookAt for this.
//通常使用transform.lookAt.
// But this can give you more control over the angle
//但这可以给你更多的对角度的控制
var target : Transform;
function Update () {
var relative : Vector3 = transform.InverseTransformPoint(target.position);
var angle : float = Mathf.Atan2(relative.x, relative.z) * Mathf.Rad2Deg;
transform.Rotate (0, angle, 0);
}