Examples
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Multiple Swipe Gestures

Author
Travis Kirton

Tags
interaction, swipes

A Swipe for Every Direction

A swipe can only register in a single direction. So, if you want to add multiple swipes to a single object you’ll have to add multiple gesture recognizers. Here are the directions you can choose from:

.Right //Default
.Down
.Left
.Up

Example

override func setup() {
    let r = Rectangle(frame: canvas.frame)
    r.corner = Size()
    canvas.add(r)

    let c = Circle(center: canvas.center, radius: canvas.height/3)
    c.strokeColor = white
    canvas.add(c)

    addSwipes(c)
    addSwipes(r)
}

func addSwipes(object: Shape) {
    addSwipe(object, direction: .Right)
    addSwipe(object, direction: .Down)
    addSwipe(object, direction: .Left)
    addSwipe(object, direction: .Up)
}

func addSwipe(object: Shape, direction dir: UISwipeGestureRecognizerDirection) {
    let swipe = object.addSwipeGestureRecognizer { (locations, center, state, direction) in
        switch direction {
        case UISwipeGestureRecognizerDirection.Right:
            object.fillColor = C4Blue
        case UISwipeGestureRecognizerDirection.Down:
            object.fillColor = C4Pink
        case UISwipeGestureRecognizerDirection.Left:
            object.fillColor = C4Purple
        default:
            object.fillColor = C4Grey
        }
    }
    swipe.direction = dir
}

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