【笔记】Swift的UIImage转换为CGImage

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前言

Swift的UIImage转换为CGImage

正文

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// CIImage转换为CGImage
func convertCIImageToCGImage(ciImage: CIImage) -> CGImage{
    let ciContext = CIContext.init()
    let cgImage: CGImage = ciContext.createCGImage(ciImage, from: ciImage.extent)!
    return cgImage
}

// UIImage转换为CGImage
func convertUIImageToCGImage(_ uiImage: UIImage) -> CGImage {
    var cgImage = uiImage.cgImage
    if cgImage == nil {
        let ciImage = uiImage.ciImage
        cgImage = self.convertCIImageToCGImage(ciImage: ciImage!)
    }
    return cgImage!
}

完成

参考文献

CSDN——iTaacy