iOS 图片旋转方向

图片旋转

let resultImage = UIImage.init(cgImage: image.cgImage!, scale: image.scale, orientation: .upMirrored)

public enum Orientation : Int {
    case up = 0 //默认方向
    case down = 1 //让默认方向旋转180度
    case left = 2 //让默认方向逆时针旋转90度
    case right = 3 //让默认方向顺时针旋转90度
    case upMirrored = 4 //默认方向的竖线镜像
    case downMirrored = 5 //让镜像旋转180度
    case leftMirrored = 6 //让镜像逆时针旋转90度
    case rightMirrored = 7 //让镜像顺时针旋转90度
}

view旋转

//水平翻转
view.transform = imageView.transform.scaledBy(x: -1.0, y: 1.0);
//竖直翻转
view.transform = imageView.transform.scaledBy(x: 1.0, y: -1.0);