查看物体A是否被相机B渲染

using UnityEngine;

using System.Collections;

public class Test : MonoBehaviour {
public GameObject anObject ;

    private Camera cam ;

    private Plane[] planes ;
void Start() {

        cam = Camera.main;

        planes = GeometryUtility.CalculateFrustumPlanes(cam);

    }
void Update() {

        if(GeometryUtility.TestPlanesAABB(planes,anObject.collider.bounds))

            Debug.Log(anObject.name + " has been detected!");

        else

            Debug.Log("Nothing has been detected");

    }

}

官网地址：http://docs.unity3d.com/Documentation/ScriptReference/GeometryUtility.TestPlanesAABB.html