unity 判断一个trans在不在sceen内

public bool IsOutScreen(Transform fTrans)
{
Vector3 screenpos = API.Camera.MainCamera.WorldToScreenPoint(fTrans.position);

if (screenpos.x > Screen.width || screenpos.x < 0 || screenpos.y > Screen.height || screenpos.y < 0)
{
return true;
}
return false;
}

此方式可以判断。