unity多个相机实现切换

核心实现方法

gameobject.setActive()

整体思路：

1. 先用GameObject.Find()方法取到六个相机对象
2. 用gameobject.setActive()函数将其中五个设置为false
3. 通过某种方式运行到代码，把active=true的相机设成false,把需要的相机设成true

遇到的问题：

用Find方法找不到checkbox不打钩的相机，原因是这样的，你不打钩说明这个对象是不属于这个项目的，肯定是找不到的，应该把所有相机的checkbox都打上勾，然后再start中把暂时不需要的相机设成false就可以了，之后再进行相机的隐藏或显示的操作

还是附上一些代码吧

 GameObject mainCamera;
    GameObject camera_U;
    GameObject camera_STFM;
    GameObject camera_CFD;
    GameObject camera_DNS;
    GameObject camera_MD;
void Start () {
        mainCamera = GameObject.Find ("MainCamera");
        camera_U = GameObject.Find ("Camera_U");
        camera_STFM = GameObject.Find ("Camera_STFM");
        camera_CFD = GameObject.Find ("Camera_CFD");
        camera_DNS = GameObject.Find("Camera_DNS");
        camera_MD = GameObject.Find ("Camera_MD");

        camera_U.SetActive (false);
        camera_STFM.SetActive (false);
        camera_CFD.SetActive (false);
        camera_DNS.SetActive (false);
        camera_MD.SetActive (false);
    }
void update(){
if(cameraFlag==true){
    if (objName == "U_u28") {
        camera_U.SetActive(true);
        mainCamera.SetActive (false);
    }else if ((objName == "STFM1")||(objName == "STFM2")) {
            camera_STFM.SetActive(true);
            mainCamera.SetActive (false);
        } else if (objName == "CFDDEM") {
            camera_CFD.SetActive(true);
            mainCamera.SetActive (false);
        } else if (objName == "DNS2") {
            camera_DNS.SetActive(true);
            mainCamera.SetActive (false);
        } else if (objName == "MD") {
            camera_MD.SetActive(true);
            mainCamera.SetActive (false);
        }
        cameraFlag = false;
    }else if(cameraFlag==false){
        mainCamera.SetActive (true);
        camera_U.SetActive (false);
        camera_STFM.SetActive (false);
        camera_CFD.SetActive (false);
        camera_DNS.SetActive (false);
        camera_MD.SetActive (false);
        cameraFlag = true;
    }
}