Screen.width / Screen.height Unity C＃问题

Question

我希望相机对屏幕做出响应，所以我写了下面的代码。问题是，当我打开应用程序时，商为零。没有错误，并且所有变量都已设置。

using UnityEngine;

public class CamSet : MonoBehaviour
{
    public float camWidth;
    public float camHeigh;
    public Camera camera;
    public float quotient;
    void Update()
    {
        quotient = Screen.height / Screen.width;
        Debug.Log("height/width = " + quotient);
        camWidth = quotient * camHeigh;
        camera.rect = new Rect(.05f, .05f, camWidth, camHeigh);
    }
}

预先感谢您的帮助。