hello, I had a little trouble about the manipulation in touch iphone. I want to move the camera left, right, top and bottom limited by touching any area of the ecranet I can not do: (help please: ( I wanted to be rotated in Prince of Persia Warrior Within in this video at 1:48 (Prince Of persia video's Link) sorry for my English ..

With my code, the camera rotation is very bad. This is the code:

var xOffset : float;
var yOffset : float;
var target : Transform;
var distance = 10.0;
var height = 5.0;
var speed = 5.0;
var yMinLimit = -20; 
var yMaxLimit = 50; 
var xSpeed = 250.0;
var ySpeed = 125.0;

private var lastY =0.0;
private var lastX = 0.0;
private var gui : GUITexture;   
private var x = 0.0;
private var y = 0.0;

function Start () {
var angles = transform.eulerAngles;
x = angles.y;
y = angles.x;
}

function Update(){
var position = transform.rotation * Vector3(0.0, height, -distance) + target.position;
transform.position = position;
for (var i=0; i< iPhoneInput.touchCount; i++){
var touch0 : iPhoneTouch=iPhoneInput.touches[0];
if(touch0.phase == iPhoneTouchPhase.Moved ){
        x = touch0.deltaPosition.x / xOffset * xSpeed * 0.02;
         y = touch0.deltaPosition.y / yOffset * ySpeed * 0.02;


    }
}
}
function LateUpdate(){
    var rotation = Quaternion.Euler(y, x, 0);

    y = ClampAngle(y, yMinLimit, yMaxLimit); 
    transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * speed);
}
static function ClampAngle (angle : float, min : float, max : float) { 
   if (angle < -360) 
      angle += 360; 
   if (angle > 360) 
      angle -= 360; 
   return Mathf.Clamp (angle, min, max); 
}