【Swift】関数の引数参照前後で値が変わる？？

2023-02-02 04:25:18.089535+0900 ButtonSample[43127:1394882] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x600003622e00> F8BB1C28-BAE8-11D6-9C31-00039315CD46
0.12195121951219512
117480667527541.67

import UIKit
import AVFoundation

class ViewController: UIViewController {
    
    @IBOutlet weak var btnCount: UIButton!
    @IBOutlet weak var btnExplosion: UIButton!
    @IBOutlet weak var imgBom: UIImageView!
    
    // ボタンフラグ
    var buttonStartFlg = true
    // 現時点での回転角
    var currentDegree: CGFloat = 0
    // 定期割り込みのための Timer のインスタンス
    var timer = Timer()
    var interval: TimeInterval = 0.01
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    @IBAction func btnCount(_ sender: Any) {
        
        btnCount.isEnabled = false
        btnExplosion.isEnabled = true
        
        // 初期スピード
        let degree: CGFloat = 30
        // 回転処理に使われるメソッドは rotateImage)
        timer = Timer.scheduledTimer(timeInterval: interval, target: self, selector: #selector(rotateImage), userInfo: degree, repeats: true)
        buttonStartFlg = false
    }
    
    @IBAction func btnExplosion(_ sender: Any) {
        // 初期スピード
        let degree: CGFloat = 30

        let stopDegree: CGFloat = 90.0
        let dDmolecule = 0.5 * pow(degree, 2)
        currentDegree = 0
        let dDdenominator = (360.0 * 10) + stopDegree
        
        let deltaDegree = dDmolecule / dDdenominator

        print(deltaDegree)

        // 定期的な呼び出しを中止する
        timer.invalidate()
        // 回転を徐々に止めるためのメソッドを1回だけ(repeats: false)呼び出し
        // 止めるために使われるメソッドは stopImage
        timer = Timer.scheduledTimer(timeInterval: interval, target: self, selector: #selector(stopImage(_:deltaDegree:)), userInfo: degree, repeats: false)
    }

    @objc func rotateImage(_ sender: Timer) {
        let degree = sender.userInfo as! CGFloat
        let angle = currentDegree * CGFloat.pi / 180  // Radian
        let affine = CGAffineTransform(rotationAngle: angle)
        imgBom.transform = affine
        currentDegree += degree
        currentDegree.formRemainder(dividingBy: 360.0)
    }

    // ストップボタンを押した後、止まるまで呼び出される回転処理
    @objc func stopImage(_ sender: Timer , deltaDegree: CGFloat) {

        print(deltaDegree)

        var degree = sender.userInfo as! CGFloat        
        let angle = currentDegree * CGFloat.pi / 180  // Radian
        let affine = CGAffineTransform(rotationAngle: angle)
        
        imgBom.transform = affine
        
        currentDegree += degree
        currentDegree.formRemainder(dividingBy: 360.0)
        
        // 回転角を減らす
        degree -= deltaDegree
        
        if degree > 0 {
            // 回転角が正の間は、減らした回転角を使って再度タイマ割り込みを使う
            timer = Timer.scheduledTimer(timeInterval: interval, target: self, selector: #selector(stopImage(_:deltaDegree:)), userInfo: degree, repeats: false)
        }
    }
}