Bounds.IntersectRay 相交射线？

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public Ray ra = new Ray(Vector3.zero, Vector3.forward);
	void Update() {
		Debug.DrawRay(Vector3.zero, Vector3.forward * 999, Color.green);
		Bounds bounds = transform.collider.bounds;
		if (bounds.IntersectRay(ra))
			Debug.Log("Touched the ray");

	}
}

// Creates a ray that points from the origin to the infinity among the z Axis.
// And prints if the transform touched the ray.
//沿着z轴，从原点到无限远，创建一条射线
//并且如果变换碰到射线，打印消息
var ra : Ray = new Ray (Vector3.zero, Vector3.forward);

function Update () {
	// Color ra in the scene editor.
	//在场景编辑器，给射线一个颜色
	Debug.DrawRay (Vector3.zero, Vector3.forward * 999, Color.green);
	var bounds : Bounds = transform.collider.bounds;
	if (bounds.IntersectRay (ra))
		Debug.Log("Touched the ray");
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public Ray ra = new Ray(Vector3.zero, Vector3.forward);
	public float t = 10.0F;
	void Update() {
		Debug.DrawRay(Vector3.zero, Vector3.forward * 10, Color.green);
		Bounds bounds = transform.collider.bounds;
		if (bounds.IntersectRay(ra, ref t))
			Debug.Log("Touched the ray");

	}
}

// Creates a ray that points from the origin to 10 units among the z Axis.
// And prints if the transform touched the ray.
//沿着z轴，从原点到10个单位之间，创建一条射线
//并且如果变换碰到射线，打印消息
var ra : Ray = new Ray (Vector3.zero, Vector3.forward);
var t : float = 10.0;

function Update () {
	// Color ra in the scene editor.
	//在场景编辑器，给射线一个颜色
	Debug.DrawRay (Vector3.zero, Vector3.forward * 10, Color.green);
	var bounds : Bounds = transform.collider.bounds;
	if (bounds.IntersectRay (ra, t))
		Debug.Log("Touched the ray");
}