iPhoneGyroCam

// iPhone gyroscope-controlled camera demo v0.3 8/8/11
// Perry Hoberman <hoberman@bway.net>
// Directions: Attach this script to main camera.
// Note: Unity Remote does not currently support gyroscope.

private var gyroBool : boolean;
private var gyro : Gyroscope;
private var rotFix : Quaternion;
public var fpc : GameObject;

function Start() {

    Screen.orientation  = ScreenOrientation.LandscapeLeft;

    var originalParent = transform.parent; // check if this transform has a parent
    var camParent = new GameObject ("camParent"); // make a new parent
    camParent.transform.position = transform.position; // move the new parent to this transform position
    transform.parent = camParent.transform; // make this transform a child of the new parent
    camParent.transform.parent = originalParent; // make the new parent a child of the original parent

    gyroBool = Input.isGyroAvailable;

    if (gyroBool) {

        gyro = Input.gyro;
        gyro.enabled = true;

        if (Screen.orientation == ScreenOrientation.LandscapeLeft) {
            camParent.transform.eulerAngles = Vector3(90,90,0);
        } else if (Screen.orientation == ScreenOrientation.Portrait) {
            camParent.transform.eulerAngles = Vector3(90,180,0);
        }

        if (Screen.orientation == ScreenOrientation.LandscapeLeft) {
            rotFix = Quaternion(0,0,0.7071,0.7071);
        } else if (Screen.orientation == ScreenOrientation.Portrait) {
            rotFix = Quaternion(0,0,1,0);
        }
    } else {
        print("NO GYRO");
    }
}

function Update () {
    if (gyroBool) {
        var camRot : Quaternion = gyro.attitude * rotFix;
        transform.localRotation = camRot;
        var direction : Vector3 = camRot * Vector3.up;
        direction.y = 0;
        gameObject.Find("print").guiText.text = direction.ToString();
        //fpc.transform.rotation = Quaternion.LookRotation(direction);
        }
}