Awesome

JMCMarchingAnts

Library that lets you add marching ants (animated) selection to the edges of the images.

 let marcher:JMCMarchingAnts = JMCMarchingAnts()

• Add animated selection layer with a addAnts(image:UIIMage, imageView:UIImageView) method, where image is an image that will be processed, and the imageView is a view that selection layer will be displayed on.

 marcher.addAnts(image, imageView: self.imageView)

Enjoy yur marching ants!

class ViewController: UIViewController {
    @IBOutlet weak var imageView: UIImageView!

    //Initialize the marching ants object
    let marcher:JMCMarchingAnts = JMCMarchingAnts()
    

    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        if let image = imageView.image{
            //if image exists add the selection layer to the image view
            marcher.addAnts(image, imageView: self.imageView)
        }
    }
}