unity3d 四元数最直观的用法(旋转)

gameObject.transform.rotation = Quaternion.Euler(30, 0, 0);//旋转x轴角度
gameObject.transform.rotation = Quaternion.EulerAngles(π/n, 0, 0);	//π/n（n是整数，得到角度 1=57.3度
gameObject.transform.rotation = Quaternion.AngleAxis(30, Vector3.right);//旋转x角度

private float time0 = 0;
private float change;
void Update () {

time0 += Time.deltaTime; //左右摆动
change = Mathf.Repeat(time0 * 0.4f, 2);//从0数到2，循环，比下面的时间慢一倍
if (change >= 1)
{
gameObject.transform.rotation = Quaternion.EulerAngles(Mathf.PingPong(time0 * 0.8f, 1), 0, 0);
}
else
{
gameObject.transform.rotation = Quaternion.EulerAngles(-1 * Mathf.PingPong(time0 * 0.8f, 1), 0, 0);
}
}