//
//  UIImage+SPAdd.swift
//  MoviaBox
//
//  Created by 长沙佳儿 on 2025/6/18.
//

import UIKit

extension UIImage {
    
    ///添加模糊效果
    func applyBlur() -> UIImage? {
        let radius = 50.0
        guard let inputCIImage = CIImage(image: self) else { return nil }
        
        let filter = CIFilter(name: "CIGaussianBlur")
        filter?.setValue(inputCIImage, forKey: kCIInputImageKey)
        filter?.setValue(radius, forKey: kCIInputRadiusKey)
        
        guard let outputCIImage = filter?.outputImage else { return nil }
        
        // 必须裁剪模糊后的图像
        let croppedImage = outputCIImage.cropped(to: inputCIImage.extent)
        
        let context = CIContext(options: nil)
        guard let cgImage = context.createCGImage(croppedImage, from: croppedImage.extent) else { return nil }
        
        return UIImage(cgImage: cgImage)
    }
    
}