How to combine/ merge 2 images into 1

Question

I would like to know what to do to save 2 images into 1 image.

One of the photos can be moved, rotated and zoomed in/out...

I\'m doing this, but it basically

Answer 1

Here's a method for UIImage extension to combine multiple images:

class func combine(images: UIImage...) -> UIImage {
    var contextSize = CGSizeZero

    for image in images {
        contextSize.width = max(contextSize.width, image.size.width)
        contextSize.height = max(contextSize.height, image.size.height)
    }

    UIGraphicsBeginImageContextWithOptions(contextSize, false, UIScreen.mainScreen().scale)

    for image in images {
        let originX = (contextSize.width - image.size.width) / 2
        let originY = (contextSize.height - image.size.height) / 2

        image.drawInRect(CGRectMake(originX, originY, image.size.width, image.size.height))
    }

    let combinedImage = UIGraphicsGetImageFromCurrentImageContext()

    UIGraphicsEndImageContext()

    return combinedImage
}

Example:

UIImage.combine(image1, image2)