out of the View中的Audiokit plot波形

import UIKit
import AudioKit

class WaveformView: UIView {
    
    var audioData: [Float] = [] {
        didSet {
            setNeedsDisplay() // 数据更新时重绘视图
        }
    }
    
    override func draw(_ rect: CGRect) {
        super.draw(rect)
        
        guard let context = UIGraphicsGetCurrentContext() else { return }
        
        context.clear(rect)
        
        let width = rect.width
        let height = rect.height
        let centerY = height / 2
        
        context.move(to: CGPoint(x: 0, y: centerY))
        
        for (index, value) in audioData.enumerated() {
            let x = CGFloat(index) / CGFloat(audioData.count - 1) * width
            let y = centerY - CGFloat(value) * centerY
            context.addLine(to: CGPoint(x: x, y: y))
        }
        
        context.setStrokeColor(UIColor.blue.cgColor)
        context.setLineWidth(2)
        context.strokePath()
    }
}