#插件需求# 需要一款ios的图片裁剪插件，可以实现水平翻转90°和垂直翻转90°

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// 裁剪图片  
func cropImage(image: UIImage, rect: CGRect) -> UIImage? {  
    guard let imageRef = image.cgImage?.cropping(to: rect) else {  
        return nil  
    }  
    return UIImage(cgImage: imageRef)  
}  

// 水平翻转图片  
func flipHorizontal(image: UIImage) -> UIImage? {  
    guard let cgImage = image.cgImage else {  
        return nil  
    }  
    let flippedImage = UIImage(cgImage: cgImage, scale: image.scale, orientation: .upMirrored)  
    return flippedImage  
}  

// 垂直翻转图片  
func flipVertical(image: UIImage) -> UIImage? {  
    guard let cgImage = image.cgImage else {  
        return nil  
    }  
    let flippedImage = UIImage(cgImage: cgImage, scale: image.scale, orientation: .downMirrored)  
    return flippedImage  
}

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