如何使用iOS图表为LineChart上的间隔设置不同的颜色？

import Charts

class CustomLineChartRenderer: LineChartRenderer {
    override func drawLinear(context: CGContext, dataSet: ILineChartDataSet) {
        guard let lineData = dataProvider?.lineData else { return }
        
        let entryCount = dataSet.entryCount
        
        if entryCount < 1 {
            return
        }
        
        var currentColor: UIColor?
        var currentStartIndex = 0
        
        for i in 0 ..< entryCount {
            guard let e = dataSet.entryForIndex(i) else { continue }
            
            if currentColor == nil {
                currentColor = dataSet.color(atIndex: i)
            }
            
            if i == entryCount - 1 {
                // Draw last line segment
                drawLine(context: context, dataSet: dataSet, entries: lineData.dataSets[dataSetIndex].entries, color: currentColor!, startIndex: currentStartIndex, endIndex: i)
            } else if dataSet.color(atIndex: i) != currentColor {
                // Draw line segment with previous color
                drawLine(context: context, dataSet: dataSet, entries: lineData.dataSets[dataSetIndex].entries, color: currentColor!, startIndex: currentStartIndex, endIndex: i)
                
                // Update color and start index
                currentColor = dataSet.color(atIndex: i)
                currentStartIndex = i
            }
        }
    }
    
    private func drawLine(context: CGContext, dataSet: ILineChartDataSet, entries: [ChartDataEntry], color: UIColor, startIndex: Int, endIndex: Int) {
        guard let transformer = dataProvider?.getTransformer(forAxis: dataSet.axisDependency) else { return }
        
        context.saveGState()
        
        let phaseY = animator.phaseY
        
        var pt = CGPoint()
        var prev = CGPoint()
        
        for j in startIndex ... endIndex {
            guard let e = entries[j] as? ChartDataEntry else { continue }
            
            pt.x = CGFloat(e.x)
            pt.y = CGFloat(e.y * phaseY)
            pt = pt.applying(transformer.valueToPixelMatrix)
            
            if j > startIndex {
                // Set line segment color
                context.setStrokeColor(color.cgColor)
                context.setLineWidth(dataSet.lineWidth)
                
                // Draw line segment
                context.move(to: prev)
                context.addLine(to: pt)
                context.strokePath()
            }
            
            prev = pt
        }
        
        context.restoreGState()
    }
}

// 在你的视图控制器中使用自定义渲染器
class ViewController: UIViewController {
    @IBOutlet weak var lineChartView: LineChartView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置LineChartView的数据源和其他属性
        
        // 创建自定义渲染器实例
        let customRenderer = CustomLineChartRenderer(dataProvider: lineChartView, animator: lineChartView.chartAnimator, viewPortHandler: lineChartView.viewPortHandler)
        
        // 将自定义渲染器设置为LineChartView的渲染器
        lineChartView.renderer = customRenderer
    }
}