经过10小时的睡眠和一些额外的谷歌搜索和调试，我发现我的axisViewCamera没有夹紧正确，这是好的，直到我试图lerp后，一些旋转适用于相机;
所以我想这种夹紧方法应该应用于axisViewCamera的每个轴，每次我改变它，就像我从方向得到的欧拉变量一样。
大声呼喊：https://stackoverflow.com/a/2323034/15787374

private float SmartClampAngle(float angle)
{
    var remainder = angle                      % 360f;
    var positiveRemainder = (remainder + 360f) % 360f;
    if (positiveRemainder > 180) positiveRemainder -= 360f;
    return positiveRemainder;
}

结果：
axisViewCamera更新：

private void UpdateCameraRotation(Vector2 viewAxis)
{
    axisViewCamera.x -= viewAxis.y;
    axisViewCamera.y += viewAxis.x;
    axisViewCamera.x = SmartClampAngle(axisViewCamera.x);  //Previously i just applied + and - without any clamp       
    axisViewCamera.y = SmartClampAngle(axisViewCamera.y);
}

方向变更：

var euler = Quaternion.LookRotation(direction, Vector3.up).eulerAngles;
euler.x = SmartClampAngle(euler.x); 
euler.y = SmartClampAngle(euler.y); 

var orig = Quaternion.LookRotation(axisViewCamera, Vector3.up).eulerAngles;
blockViewChange = true;
DOTween.To(SetAxis, 0f, 1f, 1).SetTarget(playerCamera)
      .OnComplete(() => blockViewChange = false).SetUpdate(true);

void SetAxis(float t) => axisViewCamera = Vector3.Lerp(orig, euler, t);