判断一个坐标点是否在封闭曲线内的方法(swift)

概述1 //用playground运行即可 2 import UIKit 3 4 var str = "Hello, playground" 5 6 let lTestPointsOn

 1 //用playground运行即可 2 import UIKit 3  4 var str = "Hello,playground" 5  6 let lTestPointsOne : [(Double,Double)]  = [(0,0)] 7 let lTestPoints : [(Double,1)">0),(1),1)">1,1)">1 8 let lPoints : [(Double,1)">2),1)">2,1)">3,1)"> 9 10 func judgeIf(point:(Double,Double),isIn pointArr:[(Double,Double)])->Bool{11     if 0 == pointArr.count {12         return false13     }14     let lPath = UIBezIErPath.init()15     let l1stPoint = pointArr.first16     lPath.move(to: CGPoint.init(x: l1stPoint!.))17     18     for i in 1..<pointArr.count {19         let lP = pointArr[i]20         lPath.addline(to: CGPoint.init(x: lP.21 22     23     lPath.close()24     return lPath.contains(CGPoint.init(x: point.25 }26 27 print(lPoints)28 judgeIf(point: (),isIn: lPoints)29 judgeIf(point: (30 judgeIf(point: (31 judgeIf(point: (0.5,1)">232 judgeIf(point: (33 judgeIf(point: (34 judgeIf(point: (0.535 judgeIf(point: (1.536 judgeIf(point: (37 judgeIf(point: (3.3,1)">8.138 39 judgeIf(point: (40 judgeIf(point: (41 judgeIf(point: (42 judgeIf(point: (0.743 judgeIf(point: (0.144 judgeIf(point: (845 judgeIf(point: (46 47 judgeIf(point: (48 judgeIf(point: (          总结       
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