Upvote:7 

func userPanned(sender: UIPanGestureRecognizer) {
    let v = sender.velocityInView(self.view)
}

More Answer related to the Same Query

Upvote:1 

var initialLocation: CGPoint? // Global

initialLocation.x = (initialLocation ?? 0)

(initialLocation.x)! = (initialLocation.x)! + (sender.velocity(in: colorSlider!).x / 60) // For horizontal

(initialLocation.y)! = (initialLocation.y)! + (sender.velocity(in: colorSlider!).y / 60) // For vertical

Upvote:0 

@objc func customPanGesture(_ sender: UIPanGestureRecognizer) {
    sender.velocity(in: self.view)
}

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