Question

JavaScript => static function Atan2(y: float, x: float): float;
C# => static float Atan2(float y, float x);

Description 描述

Returns the angle in radians whose Tan is y/x.

返回弧度角的正切是y/x。

Return value is the angle between the x-axis and a 2D vector starting at zero and terminating at (x,y).

返回值是x轴与起始零点和终点2D向量(x,y)的之间夹角。

Note that this function takes account of the cases where x is zero and returns the correct angle rather than throwing a division by zero exception.

注意此函数，x为0的情况，返回正确的角度，而不是抛出被零除的异常。

JavaScript:

// Usually you use transform.LookAt for this.
// But this can give you more control over the angle
 
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); 
} 

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : 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);
    }
}

Mathf