thekan23

extension UIImage {
    func resizeVI(size:CGSize) -> UIImage? {
        let cgImage = self.CGImage!
            
            var format = vImage_CGImageFormat(bitsPerComponent: 8, bitsPerPixel: 32, colorSpace: nil,
                                              bitmapInfo: CGBitmapInfo(rawValue: CGImageAlphaInfo.First.rawValue),
                                              version: 0, decode: nil, renderingIntent: CGColorRenderingIntent.RenderingIntentDefault)
            var sourceBuffer = vImage_Buffer()
            defer {
                sourceBuffer.data.dealloc(Int(sourceBuffer.height) * Int(sourceBuffer.height) * 4)

thekan23

extension UIImage {
    func resizeCG(size:CGSize) -> UIImage? {
        let bitsPerComponent = CGImageGetBitsPerComponent(self.CGImage)
        let bytesPerRow = CGImageGetBytesPerRow(self.CGImage)
        let colorSpace = CGImageGetColorSpace(self.CGImage)
        let bitmapInfo = CGImageGetBitmapInfo(self.CGImage)
        
        let context = CGBitmapContextCreate(nil, Int(size.width), Int(size.height), bitsPerComponent, bytesPerRow, colorSpace, bitmapInfo.rawValue)
        CGContextSetInterpolationQuality(context, .High)
        

thekan23

extension UIImage {
    func resizeUI(size:CGSize) -> UIImage? {
        UIGraphicsBeginImageContextWithOptions(size, true, self.scale)
        self.drawInRect(CGRect(origin: CGPointZero, size: size))
        
        let resizedImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return resizedImage
    }
}

thekan23

import Foundation
import UIKit


class ElasticView: UIView {
    
    private let topControlPointView = UIView()
    private let leftControlPointView = UIView()
    private let rightControlPointView = UIView()
    private let bottomControlPointView = UIView()