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UIImage extension to combine two images
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| extension UIImage { | |
| class func imageByCombiningImage(firstImage: UIImage, withImage secondImage: UIImage) -> UIImage { | |
| let newImageWidth = max(firstImage.size.width, secondImage.size.width ) | |
| let newImageHeight = max(firstImage.size.height, secondImage.size.height) | |
| let newImageSize = CGSize(width : newImageWidth, height: newImageHeight) | |
| UIGraphicsBeginImageContextWithOptions(newImageSize, false, UIScreen.mainScreen().scale) | |
| let firstImageDrawX = round((newImageSize.width - firstImage.size.width ) / 2) | |
| let firstImageDrawY = round((newImageSize.height - firstImage.size.height ) / 2) | |
| let secondImageDrawX = round((newImageSize.width - secondImage.size.width ) / 2) | |
| let secondImageDrawY = round((newImageSize.height - secondImage.size.height) / 2) | |
| firstImage .drawAtPoint(CGPoint(x: firstImageDrawX, y: firstImageDrawY)) | |
| secondImage.drawAtPoint(CGPoint(x: secondImageDrawX, y: secondImageDrawY)) | |
| let image = UIGraphicsGetImageFromCurrentImageContext() | |
| UIGraphicsEndImageContext() | |
| return image | |
| } | |
| } |
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