Question

JavaScript => public function Raycast(ray: Ray, out hitInfo: RaycastHit, maxDistance: float): bool;
C# => public bool Raycast(Ray ray, out RaycastHit hitInfo, float maxDistance);

Parameters 参数

ray	The starting point and direction of the ray. 射线的开始点和方向。
hitInfo	If true is returned, hitInfo will contain more information about where the collider was hit (See Also: RaycastHit).\\如果返回真，hitInfo将包含更多关于碰撞器碰到哪里的信息（参见RaycastHit）
distance	The length of the ray.\\射线的长度。

Returns 返回

bool True when the ray intersects any collider, otherwise false.

返回布尔(bool)值，当射线和任何碰撞器相交时，返回true，否则为false。也就是说，当射线碰触到任何碰撞器时返回真，否则返回假。

Description 描述

Casts a Ray that ignores all Colliders except this one.

投射一条射线（Ray），它忽略所有碰撞器，除了这个。

JavaScript:

var coll: Collider;
 
function Start() {
	coll = GetComponent.<Collider>();
}
 
function Update(){
	// Move this object to the position clicked by the mouse.
	if (Input.GetMouseButtonDown(0)) {
	    var ray : Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
	    var hit : RaycastHit;
 
	    if (coll.Raycast(ray, hit, 100.0)) {
			transform.position = ray.GetPoint(100.0);
	    }
    }
}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    public Collider coll;
    void Start() {
        coll = GetComponent<Collider>();
    }
    void Update() {
        if (Input.GetMouseButtonDown(0)) {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (coll.Raycast(ray, out hit, 100.0F))
                transform.position = ray.GetPoint(100.0F);
 
        }
    }
}

Collider