This is a Swift code snippet that we used for our blog post at RubyGarage https://rubygarage.org/. To add two images with different coordinates over a third image.

adding-two-images-with-different-coordinates-over-a-third-image.swift

let item = MediaItem(image: image)
        
let logoImage = UIImage(named: "logo")
        
let firstElement = MediaElement(image: logoImage!)
firstElement.frame = CGRect(x: 0, y: 0, width: logoImage!.size.width, height: logoImage!.size.height)
        
let secondElement = MediaElement(image: logoImage!)
secondElement.frame = CGRect(x: 300, y: 300, width: logoImage!.size.width, height: logoImage!.size.height)
        
item.add(elements: [firstElement, secondElement])
        
let mediaProcessor = MediaProcessor()
mediaProcessor.processElements(item: item) { [weak self] (result, error) in
    self?.resultImageView.image = result.image
}