Hello everybody!

I am trying to code a fingergesture: pinching for camera zoom.

It should do following:

• When beginning with the two finger, the cam shpould stay with its original FOV
• when moving finger apart, the cam should zoom out, when moving together, it should zoom in
• when the fingers leave the screen, the zoom should stay
• when touching again, the new zoom is the start of the new and same procedure.

So, it's a simple zoom ... but the cam jumps just in and out with my code:

    if (Input.touchCount == 2 && Input.GetTouch(1).phase == TouchPhase.Began){

       var pinchLength : float = Vector2.Distance(Input.GetTouch(0).position, Input.GetTouch(1).position);

    }

    if(Input.touchCount == 2 && (Input.GetTouch(0).phase == TouchPhase.Moved || Input.GetTouch(1).phase == TouchPhase.Moved)){

       var deltaLength : float = Vector2.Distance(Input.GetTouch(0).position, Input.GetTouch(1).position);
       deltaLength = pinchLength - deltaLength;
       deltaLength = deltaLength /90;

       camActive.gameObject.GetComponent(camAutoZoom).pinchStrength = deltaLength;

    }

     if(Input.touchCount == 2 && (Input.GetTouch(0).phase == TouchPhase.Ended || Input.GetTouch(1).phase == TouchPhase.Ended)){

       camActive.gameObject.GetComponent(camAutoZoom).actualZoom += deltaLength;
       camActive.gameObject.GetComponent(camAutoZoom).pinchStrength = 0;
       deltaLength = 0;

    }

And now put together in camAutoZoom-Script with this simple line:

gameObject.camera.fov =  originalFOV  + actualZoom + pinchStrength;