Created
August 30, 2016 02:35
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Resizing Image using CoreGraphics
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extension UIImage { | |
func resizeCG(size:CGSize) -> UIImage? { | |
let bitsPerComponent = CGImageGetBitsPerComponent(self.CGImage) | |
let bytesPerRow = CGImageGetBytesPerRow(self.CGImage) | |
let colorSpace = CGImageGetColorSpace(self.CGImage) | |
let bitmapInfo = CGImageGetBitmapInfo(self.CGImage) | |
let context = CGBitmapContextCreate(nil, Int(size.width), Int(size.height), bitsPerComponent, bytesPerRow, colorSpace, bitmapInfo.rawValue) | |
CGContextSetInterpolationQuality(context, .High) | |
CGContextDrawImage(context, CGRect(origin: CGPoint.zero, size: size), self.CGImage) | |
return CGBitmapContextCreateImage(context).flatMap { UIImage(CGImage: $0) } | |
} | |
} |
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