namespace UnityEngine
{
    public enum ScreenOrientation
    {
        Unknown = 0,
        Portrait = 1,
        PortraitUpsideDown = 2,
        LandscapeLeft = 3,
        Landscape = 3,
        LandscapeRight = 4,
        AutoRotation = 5
    }
}

/// <summary>
/// private bool m_IsBackCamera;
 

/// private ScreenOrientation m_CurOrientation;
/// </summary>
void CheckOrientation()
        {
            if (Mathf.Abs(Input.gyro.gravity.z) <= 0.9f)
            {
                ScreenOrientation unknown = ScreenOrientation.Unknown;
                if (Mathf.Abs(Input.gyro.gravity.x) > Mathf.Abs
 
(Input.gyro.gravity.y))
                {
                    if (Input.gyro.gravity.x > 0f)
                    {
                        unknown = ScreenOrientation.LandscapeRight;
                    }
                    else
                    {
                        unknown = ScreenOrientation.LandscapeLeft
 
;
                    }
                }
                else if (Input.gyro.gravity.y > 0f)
                {
                    unknown = !this.m_IsBackCamera ? ScreenOrientation.Portrait : ScreenOrientation.PortraitUpsideDown;
                }
                else
                {
                    unknown = !this.m_IsBackCamera ? ScreenOrientation.PortraitUpsideDown : ScreenOrientation.Portrait;
                }
                this.m_CurOrientation = unknown;
            }
        }

void SetupFixedRot()
        {
            switch (Screen.orientation)
            {
                case ScreenOrientation.Unknown:
                    this.m_FixedRot = Quaternion.Euler(90f, 180f, 0f);
                    break;

                case ScreenOrientation.Portrait:
                    this.m_FixedRot = Quaternion.Euler(90f, 180f, 0f);
                    break;

                case ScreenOrientation.PortraitUpsideDown:
                    this.m_FixedRot = Quaternion.Euler(90f, 0f, 0f);
                    break;

                case ScreenOrientation.LandscapeLeft:
                    this.m_FixedRot = Quaternion.Euler(90f, 90f, 0f);
                    break;

                case ScreenOrientation.LandscapeRight:
                    this.m_FixedRot = Quaternion.Euler(90f, 270f, 0f);
                    break;

                default:
                    this.m_FixedRot = Quaternion.Euler(90f, 180f, 0f);
                    break;
            }
        }