XMCircleGestureRecognizer was written by Michael Teeuw
An one finger circle gesture recognizer written in swift.
Add a XMCircleGestureRecognizer recognizer to your view
let cgr = XMCircleGestureRecognizer(midPoint: self.view.center, innerRadius:10, outerRadius:200, target: self, action: "rotateGesture:"))
view.addGestureRecognizer(cgr)
Or, of you don't need a minimum and maximum distance to your center point:
let cgr = XMCircleGestureRecognizer(midPoint: self.view.center, target: self, action: "rotateGesture:"))
view.addGestureRecognizer(cgr)
Add a gesture responder function to your target to respond to the gesture:
func rotateGesture(recognizer:XMCircleGestureRecognizer)
{
if let rotation = recognizer.rotation {
// rotation is the relative rotation for the current gesture in radians
}
if let angle = recognizer.angle {
// angle is the absolute angle for the current gesture in radians
}
if let distance = recognizer.distance {
// distance is the absolute distance from the midPoint
}
}
If you like to transform the values from radians to degrees, simply add .degrees to the variable:
if let rotation = recognizer.rotation {
// rotation.degrees is the relative rotation for the current gesture in degrees
}
This is my fist open source Swift class. So be gentle. ;)
Forks, patches and other feedback are welcome.