unity 使sprite铺满整个屏幕

直接上代码：

///
/// 使sprite铺满整个屏幕
///
private void MatchingAnimatorToCamera(GameObject _objanimator)
{
if (_objanimator != null)
{
m_AnimatorSprite = _objanimator.GetComponent();
}

    Vector3 scale = _objanimator.transform.localScale;
    float cameraheight = Camera.main.orthographicSize * 2;
    float camerawidth = cameraheight * Camera.main.aspect;

    if (cameraheight >= camerawidth)
    {
        scale *= cameraheight / m_AnimatorSprite.bounds.size.y;
    }
    else
    {
        scale *= camerawidth / m_AnimatorSprite.bounds.size.x;
    }
    _objanimator.transform.localScale = scale;
    _objanimator.transform.position = new Vector3(Camera.main.transform.position.x, Camera.main.transform.position.y, _objanimator.transform.position.z);
}