BTBOneFingerRotationGestureRecognizer
This source code is created from existing one, and modified to the way I want.
Original source code locates in http://blog.mellenthin.de/archives/2012/02/13/an-one-finger-rotation-gesture-recognizer/
This source code is created from existing one, and modified to the way I want.
Original source code locates in http://blog.mellenthin.de/archives/2012/02/13/an-one-finger-rotation-gesture-recognizer/