Swipe control script problem

Unity Engine
1

Ok so I have a FPS control of a turret which is rotated by swiping. I’ve looked at a few swipe control scripts but I can’t get it right yet.
I currently use ‘touch.deltaPosition’ to detect the swiping and rotating the turret based on it. Here is my script:

function Update() 
{
	for(var touch : Touch in Input.touches)
	{
		if(touch.phase == TouchPhase.Moved)
		{//Swiping? 
			//Turret movement
			x += touch.deltaPosition.x * speed * Time.deltaTime;
			y -= touch.deltaPosition.y * speed * Time.deltaTime;
			//x = ClampAngle(x, xMin, xMax);
			y = ClampAngle(y, yMin, yMax);	   
			var rotation = Quaternion.Euler(y, x, 0);
			
			//turret.transform.rotation = Quaternion.Slerp(turret.transform.rotation, rotation, Time.time * 0.1);
			turret.transform.rotation = rotation;
		}
		if(touch.phase == TouchPhase.Ended)
		{
			Fire();
		}
	}
}

When I run this code, the movement is very rigid and inaccurate. I tried using Slerp/Lerp but that completely disabled the rotation.

How can I improve this?

(I posted this in Android section before but received no help)

2

Bump