如何获得多个相交的CGRect的不相交区域？

import UIKit

func getDisjointRects(from rects: [CGRect]) -> [CGRect] {
    var disjointRects: [CGRect] = []
    var remainingRects = rects
    
    while !remainingRects.isEmpty {
        let currentRect = remainingRects.removeFirst()
        var intersectionRect = currentRect
        
        for i in 0..<remainingRects.count {
            let rect = remainingRects[i]
            intersectionRect = intersectionRect.intersection(rect)
            
            if intersectionRect.isNull || intersectionRect.isInfinite {
                continue
            }
            
            let dividedRects = CGRectDivide(currentRect, &intersectionRect, &currentRect, rect.height, .minYEdge)
            
            if !dividedRects.isEmpty {
                disjointRects.append(dividedRects[0])
            }
            
            if dividedRects.count > 1 {
                remainingRects.insert(dividedRects[1], at: i)
            }
        }
        
        if !intersectionRect.isNull && !intersectionRect.isInfinite {
            disjointRects.append(intersectionRect)
        }
    }
    
    return disjointRects
}

// 示例用法
let rect1 = CGRect(x: 0, y: 0, width: 100, height: 100)
let rect2 = CGRect(x: 50, y: 50, width: 100, height: 100)
let rect3 = CGRect(x: 75, y: 75, width: 100, height: 100)

let rects = [rect1, rect2, rect3]
let disjointRects = getDisjointRects(from: rects)

for rect in disjointRects {
    print(rect)
}