So che hai detto che non stai cercando un "ibrido im soluzione per età ", ma ho seguito questo drago per un po 'e il risultato migliore con cui ho potuto ottenere è un ibrido. Nel caso in cui la mia soluzione sia in qualche modo più utile nel tuo viaggio, la sto includendo qui. In bocca al lupo!
import UIKit
import QuartzCore
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// the target label to apply the effect to
let label = UILabel(frame: view.frame)
// create label text with empji
label.text = " HELLO"
label.textAlignment = .center
// set to red to further show the greyscale change
label.textColor = .red
// calls our extension to get an image of the label
let image = UIImage.imageWithLabel(label: label)
// create a tonal filter
let tonalFilter = CIFilter(name: "CIPhotoEffectTonal")
// get a CIImage for the filter from the label image
let imageToBlur = CIImage(cgImage: image.cgImage!)
// set that image as the input for the filter
tonalFilter?.setValue(imageToBlur, forKey: kCIInputImageKey)
// get the resultant image from the filter
let outputImage: CIImage? = tonalFilter?.outputImage
// create an image view to show the result
let tonalImageView = UIImageView(frame: view.frame)
// set the image from the filter into the new view
tonalImageView.image = UIImage(ciImage: outputImage ?? CIImage())
// add the view to our hierarchy
view.addSubview(tonalImageView)
}
}
extension UIImage {
class func imageWithLabel(label: UILabel) -> UIImage {
UIGraphicsBeginImageContextWithOptions(label.bounds.size, false, 0.0)
label.layer.render(in: UIGraphicsGetCurrentContext()!)
let img = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return img!
}
}
fonte
2017-12-23 16:39:59
Hai mai trovato una soluzione per questo? –
@AlexBeals sfortunatamente no. – DrewInTheMountains