transform.rotation和GetComponent<Rigidbody>().MoveRotation

同时在UPDATE和FIXED UPDATE中调整 旋转

并未出现闪，而是一直以UPDATE中的为准，可认为MoveRotation调用后在UPDATE中生效

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class NewBehaviourScript3 : MonoBehaviour {

    public string first = null;

	// Use this for initialization
	void Start () {

	}

	// Update is called once per frame
	void Update () {

	    if(string.IsNullOrEmpty(first))
        {

            first = "Update"; 

        }

        Quaternion q = Quaternion.Euler(new Vector3(0,60,0));
        transform.rotation = q;
	}

    void FixedUpdate()
    {
        if (string.IsNullOrEmpty(first))
        {

            first = "FixedUpdate";

        }

        //GetComponent<Rigidbody>().AddForce(Vector3.up);
        Quaternion q = Quaternion.Euler(new Vector3(0,30,0));
        GetComponent<Rigidbody>().MoveRotation(q);

    }
}