DialControl.js

var dial : GameObject;
var snoozeButton : GameObject;
var dialEasing : float = 0.2;

private var dialDrag1 = false;
private var dialTargetAngle = 0.0;
private var dialActualAngle = 0.0;
private var dialVelocity = 0.0;

function Start () {
}

function Update () {
  if (Input.touchCount == 1){
    var touch = Input.GetTouch(0);
    var ray = Camera.main.ScreenPointToRay(touch.position);
    var hit : RaycastHit;
    
    if (Physics.Raycast(ray, hit)){
      var setDate = GameObject.Find("Camera - Set Date");
      
      
      // Clock dial 1 is the target at the beginning of the touch
      if (Camera.main.transform.position == setDate.transform.position && hit.collider.gameObject == dial && touch.phase == touch.phase.Began){
        dialDrag1 = true;
      }
    }
  
    if (dialDrag1) {
      dialTargetAngle = CalculateTargetAngle(dialTargetAngle, touch.deltaPosition.y * 2);
      var finishedDialEase = Mathf.Approximately(dialTargetAngle, dialActualAngle);
      
      if (!finishedDialEase) {
        // startRotation = dial.transform.rotation;
        // endRotation = Quaternion.AngleAxis(((touch.deltaPosition.y / Screen.height) * 360), Vector3.up);
        dialActualAngle = CalculateActualAngle(dialActualAngle, dialTargetAngle);
        dial.transform.Rotate(Vector3.up * Time.deltaTime * (dialTargetAngle - dialActualAngle));
      }
    }
  }
}

function CalculateTargetAngle (current : float, increment : float) {
  var newTargetAngle = 0.0;
  newTargetAngle = current + increment;
  return newTargetAngle;
}

function CalculateActualAngle (currentDial : float, targetDial : float) {
  return Mathf.SmoothDamp(currentDial, targetDial, dialVelocity, dialEasing);
}